Description:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(Section 10 and Rule 13)

1. TITLE OF THE INVENTION:
BONE CUTTING DEVICE

2. APPLICANT:
Meril Corporation (I) Private Limited, an Indian company of the address Survey No. 135/139, Muktanand Marg, Bilakhia House, Pardi, Vapi, Valsad-396191 Gujarat, India.

The following specification particularly describes the invention and the manner in which it is to be performed:

 
FIELD OF INVENTION
[001] The present invention relates to a medical device. More specifically, the present invention relates to a bone cutting device.
BACKGROUND OF INVENTION
[002] Laminectomy is a surgical procedure in which a part of a vertebral bone called the lamina is removed. The lamina is a posterior part of a vertebrate that covers and protects the spinal canal. The lamina is removed to relieve pressure on the spinal cord or nerve roots for spinal decompression. A specialized device is used to accurately cut and/or reshape the vertebral bone for reliving the pressure on the spinal cord.
[003] Debris generated during the bone cutting, such as bone dust and fragments, can accumulate at the surgical site. This debris may obstruct the operative field, interfere with visibility, and increase the risk of complications such as infection, delayed healing, or inaccurate bone alignment if not properly managed. Thus, frequent removal of debris is necessary to keep the surgical site clear.
[004] Currently, this is typically achieved by alternately using two separate devices: a device for cutting the bone and a device for aspirating the bone debris. As a result, the surgeon is required to intermittently switch between cutting and suctioning. This disrupts the procedural workflow, increases operative time, and introduces additional handling-related challenges within the sterile field. The constant need to switch between tools and manage debris removal can mentally and physically fatigue the surgeon, particularly in lengthy or complex procedures.
[005] Moreover, managing multiple devices within a limited operative space can result in awkward hand positions and instrument crowding, complicating surgical access and increasing procedural difficulty.
[006] Therefore, there arises a need of a device that overcomes the drawbacks of the conventionally available device.
SUMMARY OF INVENTION
[007] The present invention relates to a bone cutting device. In an embodiment, the bone cutting device includes a guide member, a blade, a pneumatic actuator, a duct and a container. The guide member includes a guiding channel. The blade is slidably coupled to the guide member and is configured to move longitudinally within the guiding channel of the guide member to cut a portion of a bone. The pneumatic actuator is coupled to the blade and is configured to drive the blade in a reciprocating motion. The duct is coupled to the guide member and includes a channel to provide a passage for bone debris. The container is fluidically coupled to the duct and is configured to store the bone debris.
[008] In an embodiment, an assembly for cutting a portion of a bone is disclosed. In an embodiment, the assembly includes the bone cutting device, a pneumatic unit and a suction device. The pneumatic unit is coupled to the pneumatic actuator of the bone cutting device and is configured to drive the pneumatic actuator. The suction device is coupled to the container of bone cutting device and is configured to create a suction force to aspirate the bone debris into the container.
[009] The foregoing features and other features as well as the advantages of the invention will become more apparent from the following detailed description, which proceeds with reference to the accompanying figures.
BRIEF DESCRIPTION OF DRAWINGS
[0010] The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the apportioned drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the disclosure is not limited to specific methods and instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale.
[0011] Fig. 1A depicts a perspective view of a bone cutting device 100 (or device (100), in accordance with an embodiment of the present disclosure.
[0012] Fig. 1B depicts a sectional view of the device 100, in accordance with an embodiment of the present disclosure.
[0013] Fig. 1C depicts an exploded view of the device 100, in accordance with an embodiment of the present disclosure.
[0014] Fig. 1D depicts a cross-sectional view of the device 100, according to an embodiment of the present disclosure.
[0015] Fig. 2 depicts a perspective view of a guide member 130, in accordance with an embodiment of the present disclosure.
[0016] Fig. 3 depicts a bottom perspective view of a blade 140, in accordance with an embodiment of the present disclosure.
[0017] Fig. 4 depicts a perspective view of a pneumatic actuator 150, in accordance with an embodiment of the present disclosure.
[0018] Fig. 4A depicts a cross-sectional view of the pneumatic actuator 150, in accordance with an embodiment of the present disclosure.
[0019] Fig. 4B depicts a perspective view of a connector 160, in accordance with an embodiment of the present disclosure.
[0020] Fig. 5A depicts a perspective view of a duct 180, in accordance with an embodiment of the present disclosure.
[0021] Fig. 5B depicts a side view of the duct 180, in accordance with an embodiment of the present disclosure.
[0022] Fig. 6 depicts a perspective view of a container 120, in accordance with an embodiment of the present disclosure.
[0023] Fig. 6A depicts a perspective view of a connecting member 125, in accordance with an embodiment of the present disclosure.
[0024] Fig. 7 depicts a perspective view of a handle 110, in accordance with an embodiment of the present disclosure.
[0025] Fig. 8 depicts a perspective view of a casing 170, in accordance with an embodiment of the present disclosure.
[0026] Fig. 8A depicts a bottom perspective view the casing 170, in accordance with an embodiment of the present disclosure.
[0027] Fig. 9 depicts an assembly 10 for cutting a portion of a bone, in accordance with an embodiment of the present disclosure.
[0028] Fig. 9A depicts a Filter, Regulator, Lubricator (FRL) unit 250 of a pneumatic unit 200, in accordance with an embodiment of the present disclosure.
[0029] Fig. 10 depicts a flowchart of a method 1000 of using the bone cutting device 100 for cutting a bone, in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0030] Prior to describing the invention in detail, definitions of certain words or phrases used throughout this patent document will be defined: the terms "include" and "comprise", as well as derivatives thereof, mean inclusion without limitation; the term "or" is inclusive, meaning and/or; the phrases "coupled with" and "associated therewith", as well as derivatives thereof, may mean to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have a property of, or the like; Definitions of certain words and phrases are provided throughout this patent document, and those of ordinary skill in the art will understand that such definitions apply in many, if not most, instances to prior as well as future uses of such defined words and phrases.
[0031] Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment, but mean “one or more but not all embodiments” unless expressly specified otherwise. The terms “including,” “comprising,” “having,” and variations thereof mean “including but not limited to” unless expressly specified otherwise. An enumerated listing of items does not imply that any or all of the items are mutually exclusive and/or mutually inclusive, unless expressly specified otherwise. The terms “a,” “an,” and “the” also refer to “one or more” unless expressly specified otherwise.
[0032] Although the operations of exemplary embodiments of the disclosed method may be described in a particular, sequential order for convenient presentation, it should be understood that the disclosed embodiments can encompass an order of operations other than the particular, sequential order disclosed. For example, operations described sequentially may in some cases be rearranged or performed concurrently. Further, descriptions and disclosures provided in association with one particular embodiment are not limited to that embodiment, and may be applied to any embodiment disclosed herein. Moreover, for the sake of simplicity, the attached figures may not show the various ways in which the disclosed system, method, and apparatus can be used in combination with other systems, methods, and apparatuses.
[0033] Furthermore, the described features, advantages, and characteristics of the embodiments may be combined in any suitable manner. One skilled in the relevant art will recognize that the embodiments may be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments. These features and advantages of the embodiments will become more fully apparent from the following description and apportioned claims, or may be learned by the practice of embodiments as set forth hereinafter.
[0034] In accordance with an embodiment of the present disclosure, a bone cutting device is disclosed. The device may be used in various procedures involving cutting at least a portion of bone. Examples of such procedure include, but are not limited to, laminectomy, osteotomy, discectomy, foraminotomy and the like.
[0035] In an embodiment, the device includes a blade, a guide member, a pneumatic actuator and a container. The blade reciprocates longitudinally within the guide member and cuts a portion of the bone. The pneumatic actuator, coupled to the blade, provides the reciprocal motion to the blade. Debris generated during the cutting process (hereinafter, referred to as bone debris or debris) is transferred from the guide member to the container via a duct provided in the device. Further, the device is coupled to a suction device that produces a negative pressure or vacuum to generate a suction force to draw the debris from the guide member to the container configured to store the debris.
[0036] The device has a handle for holding the device. In an embodiment, the container is disposed within the handle which eliminates a need of a separate external container for collection of the debris. In case a post procedural examination such as biopsy or the like is required, bone samples can be collected directly from the container, which reduces operational complexity and procedural time. The handle is ergonomically designed to provide a comfortable grip to a clinician, reducing fatigue. The handle is provided with at least one control element to actuate the pneumatic actuator and the suction device can be controlled using an actuator provided on the handle. The pneumatic actuator is capable of driving the blade with a precisely controlled force to accurately cut a portion of the bone, eliminating the need for manual pressure control from the clinician. This reduces the physical effort required by the clinician during the procedure. In an embodiment, the pneumatic actuator includes a double acting cylinder which provides controllability of both, i.e., a forward and a backward stroke of the blade, thus providing an increased precision and control on the blade adding to the efficacy of the device and improving procedural outcomes.
[0037] Now referring to figures, Fig. 1A depicts a perspective view of a bone cutting device 100 (hereinafter the device 100) for cutting at least a portion of a bone, according to an embodiment of the present disclosure. The device 100 has a proximal end 100a and a distal end 100b. The device 100 is used to cut or reshape a bone during a bone cutting procedure such as, without limitation, laminectomy, osteotomy, discectomy, foraminotomy and the like. The device 100 has an ergonomic design to facilitate easy grip and handling of the device 100 during the bone cutting procedure.
[0038] Fig. 1B depicts a section view, Fig. 1C depicts an exploded view and Fig. 1D depicts a cross-sectional view of the device 100, according to an embodiment of the present disclosure. The device 100 includes a handle 110, a container 120, a guide member 130, a blade 140, a pneumatic actuator 150, a casing 170, a duct 180, at least one control element, a pair of connectors 160 and a connecting element 125. In an embodiment, the at least one control element includes a first control element 115 and a second control element 116. The aforementioned components are coupled together to form the device 100.
[0039] Fig. 2 depicts a perspective view of the guide member 130, according to an embodiment of the present disclosure. The guide member 130 is disposed towards the distal end 100b of the device 100 and is coupled to the handle 110. The guide member 130 has an elongated structure, extending from a proximal end to a distal end of the guide member 130. The guide member 130 includes a guiding channel 137a to receive the blade 140. The guide member 130 includes a pair of tabs 131, a support plate 132, a plate 133, a base 135, a pair of sidewalls 137, and a stopper 139. The support plate 132 is positioned towards the proximal end of the guide member 130. The support plate 132 extends from the proximal end of the guide member 130 towards the distal end of the guide member 130. The support plate 132 is configured to facilitate coupling of the guide member 130 with other components of the device such as handle 110, casing 170, etc. The support plate 132 may have a shape including, but not limited to, rectangular, square, rectangle with smooth edges etc. In an embodiment, the support plate 132 has a rectangular shape.
[0040] The base 135 is coupled to the support plate 132 using, for example, welding such as, without limitation argon welding, laser welding, plasma arc welding, etc., though other coupling techniques may also be used. In an embodiment, the support plate 132 and the base 135 are integrally coupled, i.e., they form an integrated structure. The base 135 extends from the support plate 132 to the distal end of the guide member 130. The base 135 includes an opening 135a. The opening 135a is positioned such that the debris generated at a bone cutting site can be efficiently collected. In an embodiment, the opening 135a is positioned substantially at a middle of the length of the base 135. It is possible that the opening 135a is provided at any other desired location on the base 135 based upon requirements. The opening 135a is configured to provide a passage to the debris to exit from the guide member 130 into the duct 180 (explained later). In an embodiment, the opening 135a has a rectangular shape. Alternatively, the opening 135a may have any other suitable shape including, without limitation, circular, oval, square, etc.
[0041] The tabs 131 are disposed towards the proximal end of the guide member 130. Each tab 131 is positioned on a respective lateral side of support plate 132 of the guide member 130 and is coupled to the support plate 132. The tabs 131 help in coupling the guide member 130 with the handle 110. The tabs 131 have a predefined shape and dimensions. In an embodiment, the tabs 131 have a cuboidal shape.
[0042] The plate 133 is positioned at the proximal end of the guide member 130 on the support plate 132. The plate 133 extends from the support plate 132 vertically towards a top end of the guide member 130. The plate 133 is coupled to the support plate 132 using, for example, plasma arc welding, laser welding, etc. In an embodiment, the support plate 132 and the plate 133 are integrally coupled. In an embodiment, the plate 133 has a semi-elliptical shape. Alternatively, the plate 133 may have any other suitable shape, for example, rectangular, semi-circular, etc. The plate 133 includes a hole 133a. The plate 133 is used to couple the guide member 130 with the pneumatic actuator 150.
[0043] The sidewalls 137 are positioned on the base 135 along an edge of a respective lateral side of the base 135. The sidewalls 137 extend from the proximal end to the distal end of the base 135. In an embodiment, each sidewall 137 is perpendicular to the base 135 and extends towards the top end of the guide member 130. The sidewalls 137 are coupled to the base 135 using, for example, arc welding, plasma welding, etc. The base 135 and the sidewalls 137 form the guiding channel 137a configured to receive the blade 140. In an embodiment, each sidewall 137 include a notch 137c towards the distal end of the guide member 130. The notches 137c are configured to receive a portion of the bone to be cut during the cutting procedure. The notches 137c provide a support to an underside of the bone structure. The notches 137c facilitate that the bone is cut precisely and reduces any chances of damage to surrounding bone tissues. When a portion of the bone is seated into the notches 137c, the notches 137c isolate that portion, thereby safeguarding neighboring bone segments and soft tissue from accidental contact with the blade 140.
[0044] The stopper 139 is positioned at the distal end of the guide member 130. The stopper 139 extends away from the base 135 towards the top end of the guide member 130, for example, at a right angle (or perpendicularly) from the base 135. The stopper 139 is coupled to the base 135 using a coupling technique such as, but not limited to, plasma arc welding, laser welding, etc. In an embodiment, the stopper 139 has a substantially, square shape with curved edges. A portion of the bone sits against a proximal surface 139a of the stopper 139 during the cutting procedure. The stopper 139 is configured to restrict the motion of the blade 140 beyond the distal end of the guide member 130, enhancing safety of the bone cutting procedure.
[0045] Additionally or optionally, the guide member 130 includes a pair of blocks 131a, positioned adjacent to the sidewalls 137 towards the proximal end of the guide member 130. For example, each block 131a is positioned between the outer surface of the sidewall 137 and the respective tab 131. The blocks 131a provide strength and support to the respective tabs 131.
[0046] Though various components of the guide member 130 are explained herein as separate components coupled together, it should be understood that the aforesaid components and the guide member 130 may be integrally formed (i.e., integrally coupled) as a single component.
[0047] The guide member 130 may be made of a biocompatible material including, but not limited to stainless steel (e.g., SS316L), titanium, titanium alloy (e.g., Ti6Al4V), etc. In an embodiment, the guide member 130 is made of stainless steel.
[0048] Fig. 3 depicts a perspective view of the blade 140, according to an embodiment of the present disclosure. The blade 140 is slidably coupled to the guide member 130 and the pneumatic actuator 150. The blade 140 is configured to cut the bone. The blade 140 includes a pair of arms 141 and a cavity 140a enclosed by the arms 141. The cavity 140a extends from a distal end towards a proximal end of the blade 140 for a partial length of the blade 140. Thus, the blade 140 is open-ended at the distal end and at the bottom end of the blade 140. The blade 140 includes a coupling portion 143 at the proximal end of the blade 140. The coupling portion 143 helps in coupling the blade 140 with the pneumatic actuator 150. In an embodiment, the coupling portion 143 includes an aperture 143a. The aperture 143a may be threaded or smooth. In an embodiment, the aperture 143a has internal threads 143a1. The blade 140 is slidably disposed within the guiding channel 137a. The blade 140 is configured to move longitudinally along the guiding channel 137a to cut a portion of the bone. The blade 140 and the guiding channel 137a have a corresponding shape and dimensions. The blade 140 is movable in a reciprocating motion, i.e., in back-and-forth motion. An outer surface of each arm 141 mates with an inner surface of a corresponding wall 137. The arms 141 slide longitudinally against the sidewalls 137. The blade 140 is configured to cut a portion of the bone during the bone cutting procedure. In an embodiment, an edge 141a is provided on each arm 141 at the distal end of the blade 140. In an embodiment, the edges 141a is sharpened to ease the cutting of the bone. For example, the edges 141a are tapered towards the distal end of the blade 140.
[0049] In an embodiment, the blade 140 has a pre-defined shape such as, semi-cylindrical, cuboidal, etc. In an embodiment, the blade 140 has a cuboidal shape. Flat-ended structure of the blade 140 removes bone in a more controlled manner than round ends, reducing splintering. Thus, the cuboidal shape of the blade 140 enables controlled bone grafting where geometric precision is needed. The blade 140 may be made of a biocompatible material including, but not limited to, stainless steel, titanium, titanium alloy (e.g., Ti6Al4V), etc. In an embodiment, the blade 140 is made of stainless steel.
[0050] Fig. 4 depicts a perspective view of the pneumatic actuator 150, according to an embodiment of the present disclosure. Fig. 4A depicts a cross-sectional view of the pneumatic actuator 150. The pneumatic actuator 150 is coupled to the blade 140 and is configured to drive the blade 140 in a reciprocating motion to cut at least a portion of the bone. In an embodiment, the pneumatic actuator 150 includes a cylinder 151 and a shaft 153. The cylinder 151 is disposed towards the proximal end 100a of the device 100. The cylinder 151 includes a body 154 having a bore 155 (shown in Fig. 4A). A proximal block 154a is provided at a proximal end of the body 154 and a distal block 154b is provided at a distal end of the body 154. The shaft 153 is slidably disposed within the cylinder 151. The shaft 153 is partially disposed within the bore 155 of the cylinder 151. The shaft 153 is slidable within the bore 155. The shaft 153 is coupled to a piston 156 provided in the bore 155. For example, a proximal end of the shaft 153 is coupled to the piston 156. In one embodiment, the shaft 153 and the piston 156 are integrally coupled. In another embodiment, the proximal end of the shaft 153 is coupled to the piston 156 using, for example, welding. The shaft 153 extends from the cylinder 151 towards the distal end 100b of the device 100. In an embodiment, the shaft 153 extends from the piston 156 towards the distal end 100b. The shaft 153 passes through the hole 133a of the plate 133 of the guide member 130. A distal portion of the shaft 153 extends into the guide member 130 through the hole 133a. In an embodiment, the piston 156 is a cylindrical disc, though the piston 156 may have any other shape. The piston 156 is slidable within the bore 155. The shaft 153 is configured to move longitudinally in response to longitudinal movement of the piston 156.
[0051] The cylinder 151 includes at least one port fluidically coupled to a pneumatic unit, e.g., a pneumatic unit 200, and to the bore 155. In an embodiment, the cylinder 151 is a double-acting cylinder and includes a first port 151a and the second port 151b. Each of the first port 151a and the second port 151b is configured to allow a pressurized air to enter and exit the cylinder 151 to provide the reciprocating motion to the shaft 153, i.e., the first port 151a and the second port 151b are provided for ingress and egress of the pressurized air. The first port 151a is provided on the proximal block 154a and the second port 151b is provided on the distal block 154b. In an embodiment, when the air enters the cylinder 151 from the first port 151a, the air pushes the piston 156, and hence, the shaft 153, to move longitudinally in a distal direction and when the air enters the cylinder 151 from the second port 151b, the air pushes the piston 156 and the shaft 153 in a proximal direction. Thus, in response to actuation of the pneumatic actuator 150, the shaft 153 is configured to reciprocate, i.e., the shaft 153 is configured to move back-and-forth longitudinally. The shaft 153 is coupled to the blade 140 and is configured to drive the blade 140 in reciprocating motion. In other words, the shaft 153 transfers the reciprocating motion to the blade 140. In an embodiment, the shaft 153 is coupled to the blade 140 via threaded coupling. Accordingly, in an embodiment, the shaft 153 includes outer threads 153a configured to mate with the internal threads 143a1 of the aperture 143a of the blade 140. It is possible that the shaft 153 and the blade 140 are coupled in any other manner. The use of a double-acting cylinder provides enhanced controllability and facilitates controlled forward and return strokes of the shaft 153. This enhances precision in cutting bone and reduces idle or uncontrolled movement. The pressure of the compressed (or pressurized) air can be independently regulated for each of first port 151a and the second port 151b to precisely control the speed, stroke length, and force of both the forward and return strokes of the blade 140. Though the present disclosure has been explained with the cylinder 151 being a double-acting pneumatic cylinder, in another embodiment, the cylinder 151 is a single-acting pneumatic cylinder and includes one port fluidically coupled to the pneumatic unit 200.
[0052] The first port 151a and the second port 151b are fluidically coupled to the pneumatic unit 200, for example, via a respective connector 160. Fig. 4B depicts an exemplary connector 160. In an embodiment, the connector 160 is an elbow-connector. In an embodiment, each of the first port 151a and the second port 151b include a hole 152. Each hole 152 is configured to receive and is coupled with an extension 162 of the respective connector 160. In an embodiment, the hole 152 is provided with internal threads 152a. The internal threads 152a are configured to mate with threads 161 provided on the extension 162 of the respective connector 160 provided at a first end 160a of the connector 160. Each connector 160 includes a first passage 163 configured to provide a passage for the ingress and egress of the air used for driving the cylinder 151. The first passage 163 extends from the first end 160a to the second end 160b of the connector 160. Each connector 160 includes a coupling portion 164 at the second end 160b. In an embodiment, the coupling portion 164 is an annular projection as shown in Fig. 4B. The coupling portion 164 helps in fluidically coupling the connector 160, and hence the cylinder 151 with the pneumatic unit 200. The connectors 160 depicted herein are merely exemplary and other suitable connectors may be used without deviating from the scope of the present disclosure.
[0053] Figs. 5A-5B depict the duct 180, according to an embodiment of the present disclosure. The duct 180 has a proximal end 180e and a distal end 180f. The duct 180 is coupled to the guide member 130 and is fluidically coupled to the container 120. In an embodiment, the duct 180 is coupled to the handle 110. The proximal end 180e of the duct 180 is coupled to the handle 110 and the distal end 180f of the duct 180 is coupled to the guide member 130. The duct 180 is configured to transfer the debris including bone fragments collected on the guide member 130 into the container 120. The duct 180 has a hollow structure and includes a channel 180d. The channel 180d is configured to provide a passage for the debris. The channel 180d extends for the length of the duct 180, i.e., from the proximal end 180e to the distal end 180f. The duct 180 has an inlet 180a1 at the distal end 180f. The inlet 180a1 is fluidically coupled to the opening 135a on the base 135 of the guide member 130. In an embodiment, the inlet 180a1 aligns with the opening 135a of the guide member 130. The debris passes from the guide member 130 through the opening 135a and enters the duct 180 via the inlet 180a1. Further, the duct 180 includes an outlet 180c1 towards the proximal end 180e. The outlet 180c1 is configured to transfer the debris from the duct 180 into the container 120. In an embodiment, the duct 180 has a first portion 180a, a second portion 180b, and a third portion 180c. The first portion 180a is provided towards the distal end 180f and the third portion 180c is provided towards the proximal end 180e. The first portion 180a is configured to couple the duct 180 to the guide member 130. In an embodiment, the first portion 180a is removably coupled to the guide member 130. In an embodiment, the first portion 180a includes a first slab 181 and a pair of extensions 181a provided on lateral side of the first slab 181. The first slab 181 surrounds the inlet 180a1. The first slab 181 mates with a bottom surface of the guide member 130. Each extension 181a is configured to sit against an outer surface of the corresponding sidewall 137 of the guide member 130 and is coupled to the corresponding wall 137. In an embodiment, each extension 180a2 includes a plurality of first holes 180a2 (e.g., two holes 180a2). Each first hole 180a2 aligns with a corresponding hole 137b of a pair of holes 137b (shown in Fig. 4) provided on the corresponding wall 137. Each first hole 180a2 and the corresponding hole 137b are configured to receive a respective first fastener 30 of a plurality of first fasteners 30 (show in Fig. 1B) to couple the duct 180 with the guide member 130.
[0054] The third portion 180c is configured to couple the duct 180 with the handle 110. In an embodiment, the third portion 180c is removably coupled to the handle 110 with the help of fasteners, e.g., the first fasteners 30. The third portion 180c includes a second slab 182. The second slab 182 surrounds the outlet 180c1. The second slab 182 includes a plurality of second holes 180c3 (e.g., four second holes 180c3 as shown in Fig. 5). Each second hole 180c3 aligns with a corresponding hole (not shown) provided on the handle 110. The second hole 180c3 and the corresponding hole in the handle 110 are configured to receive a respective first fastener 30 to removably couple the handle with the duct 180. The removable coupling of the duct 180 with the guide member 130 and the handle 110 facilitates easy assembling/disassembling and allows efficient cleaning and sterilization of the duct 180 before, during, and/or after the procedure. Consequently, the duct 180 is fully cleanable and autoclavable. It should be understood that the coupling of the duct 180 with the guide member 130 and the handle 110 described herein is merely exemplary and these components can be coupled using other suitable techniques, without deviating from the scope of the present disclosure.
[0055] The second portion 180b is disposed between the first portion 180a and the third portion 180c. The second portion 180b couples the first portion 180a and the third portion 180c. The second portion 180b is tubular. In an embodiment, the second portion 180b slopes downward from the distal end 180f to the proximal end 180e, i.e., the second portion 180b is slanted. The second portion 180b (or the channel 180d) makes a predefined angle A with a longitudinal axis X of the device 100. As depicted in Fig. 5B, a central axis Y of the second portion 180b of the duct 180 subtends the predefined angle A with the longitudinal axis X of the device 100. In an embodiment, the predefined angle A ranges from 155 degrees to 165 degrees, and more specifically between 159 degrees to 161 degrees. In an example implementation, the predefined angle A is 160 degrees. The sloped (or slanted) design, a gravitational force too acts on the debris, in addition to the suction force, thereby, facilitating an easier and more efficient movement of the debris.
[0056] The duct 180 may be made of a biocompatible material including, but not limited to, stainless steel (e.g., SS 316L), titanium, titanium alloy (e.g., Ti6Al4V), etc. In an embodiment, the duct 180 is made of stainless steel.
[0057] Fig. 6 depicts a perspective view of the container 120, according to an embodiment of the present disclosure. The container 120 is configured to collect (or store) the debris generated during the bone cutting procedure. In an embodiment, the container 120 is disposed within the handle 110 (as shown in Fig. 1C). The container 120 has a predefined shape, such as, without limitation, cuboidal, cylindrical, elliptical, prism, etc. In an embodiment, the container 120 has a generally polygonal shape. The container 120 is hollow from inside and encloses a volume to store the debris. The container 120 is fluidically coupled to the duct 180, e.g., to the channel 180d of the duct 180. In an embodiment, the container 120 includes an opening 121 provided on a distal face 120b of the container 120. In an embodiment, the opening 121 is positioned towards a top end 120a of the container 120. The opening 121 aligns with and is fluidically coupled to the outlet 180c1 of the duct 180. In other words, the opening 121 is fluidically coupled to the channel 180d. The opening 121 is configured to provide a passage for the debris to enter the container 120 from the duct 180. The container 120 is fluidically coupled to a suction device, such as a suction device 300, configured to create a suction force in the container 120. According to an embodiment, the container 120 includes an aperture 123 on a bottom surface 120c of the container 120. The aperture 123 helps in coupling the container 120 with the suction device 300. The suction device 300 creates a negative pressure (or suction force) inside the container 120 to facilitate easy suction (or aspiration) of the debris from the guide member 130 into the container 120 via the duct 180. The aperture 123 may be smooth or threaded. In an embodiment, the aperture 123 includes threads 124 on an internal surface of the aperture 123.
[0058] The container 120 is configured to effectively collect bone debris, dust, and fragments generated during the cutting procedure, thereby maintaining a clear operative field and improving surgical visibility. The container 120 provides an effective and isolated storage for the debris. Consequently, if a post procedural testing of the debris, such as biopsy, histopathological examination, or microbial culture, etc. is required, samples can be easily collected from the container 120. In an embodiment, the container 120 is removable from the handle 110. Such a modular design of the container 120 facilitating thorough cleaning, sterilization, and replacement of the container 120 between procedures. Further, providing the container 120 within the handle 110 enhances the compactness and portability of the device 100 and eliminates the need of a separate collection unit for collecting the debris which reduces operational complexity and procedural time. Though the container 120 has been described herein as removably disposed within the handle 110, it should be considered merely exemplary. In another embodiment, the container 120 is provided outside the handle 110.
[0059] The connecting element 125 is coupled to the container 120, for example, with the aperture 123 of the container 120. The connecting element 125 is used to couple the container 120 with the suction device 300. Fig. 6A depicts an exemplary connecting element 125, according to an embodiment. The connecting element 125 has a tubular shape defining a second passage 127. The second passage 127 aligns with the aperture 123 of the container 120. The second passage 127 is configured to provide a passage to the air from the container 120 into the suction device 300 to create a negative pressure or suction in the container 120 for easy suction of the debris from the guide member 130 into the container via the duct 180. The connecting element 125 may be coupled to the container 120 using any coupling technique including, but not limited to, threaded coupling, welding, snap-fitting, slot-fitting, male-female coupling, etc. In an embodiment, the container 120 is coupled to the connecting element 125 using threaded coupling. For example, the connecting element 125 includes a threaded portion 126a provided with external threads 126. The threaded portion 126a is disposed towards a first end 125a of the connecting element 125. The external threads 126 of the connecting element 125 are configured to mate with the threads 124 of the container 120 to couple the connecting element 125 with the container 120. Additionally, or optionally, the connecting element 125 includes a gripping element 128 to facilitate coupling and/or decoupling of the connecting element 125 with the container 120. In an embodiment, the gripping element 128 is in the form of a nut and has a hexagonal external profile configured to facilitate a grip on the connecting element 125 using for example, a tool such as a wrench or the like, or clinician’s hand. By tightening the gripping element 128, a hermetic seal is provided. In an embodiment, the connecting element 125 includes a flange 129 disposed at a second end 125b of the connecting element 125. The flange 129 helps in coupling the connecting element 125 with the suction device 300. The flange 129 is provided annularly and has, for example, cylindrical shape (i.e., the flange 129 is in the form of a ring).
[0060] The at least one control element is coupled to, and is configured to actuate, the pneumatic unit 200 and the suction device 300. The at least one control element is provided in the handle 110. For example, the at least one control element includes the first control element 115 and the second control element 116. The first control element 115 is coupled to the pneumatic unit 200 and is configured to actuate the pneumatic unit 200. The second control element 116 is coupled to the suction device 300 and is configured to actuate the suction device 300. In an embodiment, the first control element 115 and the second control element 116 are push buttons. Alternatively, the first control element 115 and the second control element 116 may be a toggling switch, a rotary knob, etc. The first control element 115 and the second control element 116 are housed in and are coupled to the handle 110. At least a portion of the first control element 115 and the second control element 116 extends out of the handle 110 and is configured to be actuated by the clinician. The first control element 115 and the second control element 116 may have a predefined shape, including but not limited to, circular, rectangular, square, etc. In an embodiment, the first control element 115 and the second control element 116 have a rectangular shape. The first control element 115 and the second control element 116 may be made of a material including, but not limited to, polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE) (e.g., HDPE or LDPE), etc. In an embodiment, the first control element 115 and the second control element are made of HDPE. In an embodiment, a top surface of the first control element 115 and the second control element 116 is provided with serrations, to facilitate a better grip for the clinician on the first control element 115 and the second control element 116. In an embodiment, each of the first control element 115 and the second control element 116 are coupled to a respective electrical cable 118 (shown in Fig. 1B). The electrical cables 118 help in electrically coupling the first control element 115 and the second control element 116 with the pneumatic unit 200 and the suction device 300, respectively.
[0061] Now moving on to Fig. 7, a perspective view of the handle 110 is depicted, according to an embodiment of the present disclosure. The handle 110 is held by a clinician while using the device 100. The handle 110 has an ergonomic design for comfortable grip of the clinician on the handle 110 while using the device 100. This reduces the clinician’s fatigue. In an embodiment, the handle 110 has a generally polygonal shape, though it may have any other shape. In an embodiment, axial width of the handle 110 gradually decreases from a top end 110c of the handle 110 to a bottom end 110d of the handle 110 such that a portion of the handle 110 towards the top end 110c is wider compared to a portion towards the bottom end 110d. In an embodiment, the handle 110 has a hollow structure defining a cavity 110e (shown in Fig. 1B) within the handle 110. The cavity 110e is configured to receive the container 120. In other words, the container 120 is disposed within the cavity 110e of the handle 110 of the bone cutting device 100. In an embodiment, the container 120 snap-fits into the cavity 110e and can be easily removed. The container 120 and the cavity 110e have a similar shape such that the container 120 snugly fits within the cavity 110e.
[0062] In an embodiment, the handle 110 is formed by coupling a first section 110a and a second section 110b (depicted in Fig. 1C). The first section 110a and the second section 110b may be coupled together using any coupling technique such as, without limitation, adhesive bonding, welding, slot fitting, snap fitting, etc. In an embodiment, the first section 110a and the second section 110b are coupled together using a plurality of second fasteners 20, allowing a removable coupling between the two sections of the handle 110. This facilitates insertion and removal of the container 120 from the handle 110 as needed. Optionally, each of the first section 110a and the second section 110b is provided with at least one depression 119 formed on an outer surface of the respective section. In one embodiment, an outer edge of each section is elevated relative to a central portion, thereby defining the at least one depression 119. The at least one depression 119 provide, for example, a space for the clinician to rest their palm when holding the handle 110. This enhances usability and comfort, reduces fatigue and helps in improving precision as a result.
[0063] The handle 110 is coupled to the guide member 130 and the casing 170. In an embodiment, the handle 110 includes a pair of first projections 111 and a pair of second projections 113. In an embodiment, the first projections 111 are positioned on a top surface 114 of the handle 110 towards a proximal end of the handle 110. Each first projection 111 is positioned on a respective lateral side of the handle 110. The first projections 111 help in coupling the casing 170 with the handle 110 as explained later. In an embodiment, the first projections 111 sit against an inner surface of the casing 170 and restrict any lateral movement of the casing 170 relative to the handle 110 while using the device 100. In an embodiment, the second projections 113 are positioned on the top surface 114 towards a distal end of the handle 110. Each second projection 113 is positioned on a respective lateral side of the handle 110. In an embodiment, each second projections 113 include a slot 113a on an inner surface of the second projection 113. The slots 113a extend from a distal end of the second projections 113 for at least a partial length of the second projections 113. In an embodiment, the slots 113a extend for substantially entire length of the second projections 113. Each slot 113a is configured to receive a respective tab 131 of the guide member 130 to couple the guide member 130 with the handle 110. In other words, each tab 131 is configured to reside in a respective slot 113a of the second projection 113 provided on the handle 110. Each of the second projection 113 includes a plurality of holes 113b on its top face. Each hole 113b is configured to receive a fastener, such as a first fastener 30. The first fasteners 30 pass through the holes 113b of the second projections 113 and abut a surface of the tab 131 to secure the coupling between the tabs 131 and second projection 113, and hence, securing the coupling between the handle 110 and the guide member 130. The cylinder 151 sits on the top surface 114 of the handle 110 such that a part of the cylinder 151 resides with a gap defined by the first projections 111 as well as a gap defined by the second projections 113.
[0064] The handle 110 is coupled to the at least one control element, e.g., the first control element 115 and the second control element 116. In an embodiment, the handle 110 includes a cut-out (not shown) configured to receive a respective control element of the first control element 115 and the second control element 116. The cut-outs are, for example, provided on a distal face of the handle 110 to facilitate easier manipulation of the control elements. In an embodiment, the handle 110 includes a protrusion 117 towards the bottom end 110d of the handle 110. In an embodiment, the protrusion 117 has a hollow structure and is configured to receive the electrical cables 118. The protrusion 117 may be of any shape, including but not limited to rectangular, square, circular, semi-circular, hemispherical, etc. In an embodiment, the protrusion has a rectangular shape.
[0065] The handle 110 may be made of a material, such as, without limitation, PVC, LDPE, HDPE, acrylonitrile butadiene styrene (ABS), etc. In an embodiment, the handle 110 is made of HDPE.
[0066] Fig. 8 depicts the casing 170, according to an embodiment of the present disclosure. The casing 170 is configured to at least partially cover the pneumatic actuator 150. The casing 170 provides a protective cover for the pneumatic actuator 150, more specifically for the cylinder 151. In an embodiment, the casing 170 includes a proximal section 170a and a distal section 170b disposed at a proximal and a distal end of the casing 170, respectively. The proximal section 170a of the casing 170 covers the cylinder 151 and the distal section 170b covers the shaft 153 of the pneumatic actuator 150. The shape of the casing 170 is chosen based upon the shape of the pneumatic actuator 150 and the ergonomic design of the device 100. The proximal section 170a is coupled to the handle 110. In an embodiment, the proximal section 170a includes lateral sections 170a1 defining a cavity 171 therebetween. A slit 174 is provided on each lateral section 170a1 at a bottom end of the casing 170 (shown in Fig. 8A). Each slit 174 is configured to receive a respective first projection 111, thereby snap-fitting the casing 170 on the handle 110. The cavity 171 is configured to accommodate the cylinder 151 of the pneumatic actuator 150 such that the body 154 of the cylinder 151 is disposed within the cavity 171 and the proximal block 154a and the distal block 154b of the cylinder 151 are at least partially disposed outside the cavity 171. In an embodiment, at least one hole 172 is provided on each lateral section 170a1. Each of the pair of holes 172 aligns with a corresponding hole (not shown) provided on a lateral surface of the respective first projection 111 of the handle 110. Each hole 172 and the corresponding hole on the first projection 111 are configured to receive a corresponding a fastener, e.g., one first fastener 30. The distal section 170b extends distally from the proximal section 170a. In an embodiment, the distal section 170b is slanted towards the distal end of the casing 170. Additionally, or optionally, the casing 170 includes the cutouts 173 on each lateral side. The cutouts 173 are configured to at least partially receive the blocks 131a of the guide member 130 to facilitate the snap-fit coupling between the casing 170 and the pneumatic actuator 150. The shape of the blocks 131a may depend on the shape of the cutout 173 of the casing 170. In an embodiment, a medial portion of the block 131a sits within the cutout 173 of the casing 170 and a lateral portion of the block 131a is disposed outside the cutout 173.
[0067] The casing 170 may be made of a material including, but not limited to, polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE) (e.g., HDPE or LDPE), etc. In an embodiment, the casing 170 is made of PVC. The casing 170 is optional.
[0068] Fig. 9 depicts an assembly 10 for cutting a bone in laminectomy or other bone cutting procedures, according to an embodiment of the present disclosure. The assembly 10 includes the device 100, the suction device 300 and the pneumatic unit 200. The pneumatic unit 200 and the suction device 300 are fluidically coupled with the device 100 using a plurality of tubes.
[0069] The pneumatic unit 200 is coupled to the pneumatic actuator 150 and is configured to actuate (or drive) the pneumatic actuator 150 and provide a controlled supply of compressed air to the pneumatic actuator 150. According to an embodiment, the pneumatic unit 200 includes a filter regulator lubricator (FRL) unit 250 and a solenoid valve 210. In an embodiment, as shown in Fig. 9A, the FRL unit 250 includes a filter 251, a regulator 252, a lubricator 253, and a pressure gauge 254. The aforementioned components are fluidically coupled with each other.
[0070] The filter 251 is configured to receive air from a compressor (not shown). The filter 251 is configured to remove particulates, dust, and condensed moisture from compressed air.
[0071] The regulator 252 is disposed towards a top end of the filter 251. The regulator 252 is integrally coupled to the filter 251. The regulator 252 is rotatable and allows an operator to selectively adjust the pressure of the compressed air. The regulator 252 is provided with the pressure gauge 254. The pressure gauge 254 is configured to display the pressure of the compressed air so that the regulator 252 can be operated to achieve a desired pressure of the compressed air, depending upon the surgical requirements. The air from the filter 251 goes into the lubricator 253.
[0072] The lubricator 253 is disposed adjacent to the regulator 252. The lubricator 253 is configured to introduce a controlled quantity of lubricant into the downstream air stream. In an embodiment, the lubricator 253 includes a lubricant reservoir and a flow adjustment knob for regulating the amount of lubricant dispensed into the compressed air stream. The lubricated air stream from the lubricator 253 is transferred (or supplied) to the device 100 via the solenoid valve 210.
[0073] The solenoid valve 210 is electrically coupled to the first control element 115 of the device 100, for example, with the help of the electrical cable 118 and a switch board (not shown). A power supply is electrically connected to the switch board such that the actuation or de-actuation of the first control element 115 connects or disconnects the power supply to the solenoid valve 210, respectively. The solenoid valve 210 includes an inlet port 210a and a pair of outlet ports 210b. The inlet port 210a is coupled to an outlet of the lubricator 253 using, for example, a pipe 210c. The solenoid valve 210 receives compressed air from FRL unit 250 at the inlet port 210a, and transfers the compressed air to the device 100 through the outlet ports 210b. The actuation of the first control element 115 actuates the solenoid valve 210, causing the solenoid valve 210 to supply the compressed air to the pneumatic actuator 150 of the device 100. Each outlet port 210b is fluidically coupled to a respective one of the first port 151a and the second port 151b of the pneumatic actuator 150. In an embodiment, a first end of a first tube 220 is coupled to a respective outlet port 210b of the solenoid valve 210 and a second end of the first tube 220 is coupled to a respective connector 160, for example, to the coupling portion 164 of the connector 160, thereby fluidically coupling each outlet port 210b with a respective port of the first port 151a and the second port 151b. A lumen of the first tube 220 aligns with and is fluidically coupled to the first passage 163 of the connector 160. At least a portion of the first tube 220 towards the second end of the first tube 220 is disposed in the first passage 163 of the connector 160. In an embodiment, the pneumatic unit 200 includes a control unit allowing the medical practitioner to control the pressure of the compressed air to adjust the force, speed, stroke length, etc. of the shaft 153 based upon requirements. The control unit is coupled to the solenoid valve 210. In an example implementation, the control unit includes a programmable logic control circuitry configured to control the pressure of the compressed air output by the solenoid valve 210. It should be understood that the pneumatic unit 200 described herein is merely exemplary. The pneumatic unit 200 may be any pneumatic unit (or assembly) capable of providing controlled compressed air to the pneumatic actuator 150 of the device 100 and drive the shaft 153 of the pneumatic actuator 150 in a reciprocating motion.
[0074] The suction device 300 is fluidically coupled to container 120 of the device 100 via a second tube 310. In an embodiment, the second tube 310 is coupled to the flange 129 of the connecting element 125 via the second tube 310. A lumen of the second tube 310 is aligned with the second passage 127 of the connecting element 125. The suction device 300 is configured to create a negative pressure or a suction force in the container 120 to aspirate the debris from the guide member 130 into the container 120 through the duct 180. The suction device 300 is electrically coupled to the second control element 116 of the device 100, for example, with the help of electrical cable 118. It should be noted that the suction device 300 described herein is merely exemplary. The suction device 300 may be any device capable of creating a negative air pressure (or vacuum).
[0075] In an embodiment, the suction device 300 (as depicted in Fig. 9) includes a casing 330, a control panel 340, a vacuum chamber 350, and a handle 360.
[0076] The casing 330 acts as a protective cover. The casing 330 is configured to house the internal components of the suction device 300. The casing 330 may have any shape suitable for easy transportation and maneuverability. In an embodiment, the casing 330 has a substantially cuboidal shape with round edges thereby enhancing both the aesthetic appeal and functional ergonomics of the suction device 300. Additionally, the casing 330 may be provided with perforations 331 on corresponding lateral sides to facilitate adequate airflow and thermal regulation of the internal components of the suction device 300.
[0077] In an embodiment, the control panel 340 is disposed towards a front side of the casing 330. The control panel 340 serves as a primary user interface for operating and monitoring the suction device 300. The control panel 340 includes a vacuum gauge 343 to visually indicate the suction pressure of the suction device 300. The control panel 340 also includes a control knob 341 to adjust the suction pressure during the operation of the suction device 300.
[0078] The vacuum chamber 350 is at least partially disposed within the casing 330. The vacuum chamber 350 may be positioned anywhere on the casing 330. In an embodiment, the vacuum chamber 350 is positioned at a corner of the casing 330. In an embodiment, the vacuum chamber 350 has a cylindrical shape, though the vacuum chamber 350 may have any other suitable shape. The vacuum chamber 350 may serve as a secondary collection and buffer unit for air and debris during the operation. The vacuum chamber 350 includes a pair of ports – a third port 351 and a fourth port 352. The third port 351 is fluidically coupled to the second tube 310 that is further coupled to the container 120, thereby coupling the vacuum chamber 350 with the container 120. For example, a first end of the second tube 310 is coupled to the flange 129 of the connecting member 125 and a second end of the second tube is coupled to the third port 351. Any excess of the debris may be stored within the vacuum chamber 350. The fourth port 352 is coupled to a vacuum pump (not shown) disposed within the casing via the third tube 353. The vacuum pump is configured to create a controlled negative pressure (or vacuum) within the vacuum chamber 350, and thereby in the device 100.
[0079] The handle 360 is provided on an upper surface of the casing 330. The handle 360 is configured to facilitate convenient lifting, carrying and repositioning of the suction device 300. The handle 360 may be integrally formed with the casing 330 or coupled to the casing 330 via coupling technique including but not limited to screws, bolts, or rivets etc.
[0080] The second control element 116 is electrically connected to the suction device 300 with the help of the electrical cables 118. For example, the wire 118 connected to the second control element 116 is connected to a switch board (which may be the same or different than the switch board used for the pneumatic unit 200). A power supply is connected to the switch board and an output of the switch board is connected to a power socket of the suction device 300 such that activation or de-activation of the second control element 116 connects or disconnects, respectively, the power supply from the suction device 300.
[0081] Now, the working of the device 100 is explained with the help of Fig. 10. Fig. 10 depicts a flow chart of a method 1000 of using the bone cutting device 100 for cutting a bone, according to an embodiment of the present disclosure. The device 100 is assembled with the pneumatic unit 200 and the suction device 300 as explained earlier. A clinician holds the device 100 by the handle 110. The clinician determines a bone to be cut using the device 100. At step 1001, a portion of the bone intended to be removed (hereinafter, a target portion) is engaged with the device 100. For example, the bone is aligned such that the target portion is properly seated within the notches 137c provided on the wall 137 of the guide member 130, ensuring accurate positioning for the cutting operation. Further, the target portion sits against the proximal surface 139a of the stopper 139.
[0082] At step 1003, the clinician actuates the first control element 115 of the handle 110 to move the blade 140 in a reciprocating manner. The actuation of the first control element 115 actuates or energizes the solenoid valve 210 to supply compressed air to the first port 151a and second port 151b of the pneumatic actuator 150 in an alternating manner to provide a reciprocating motion to the shaft 153 of the pneumatic actuator 150. The back-and-forth movement of the shaft 153 causes the blade 140 to move back-and-forth (i.e., in reciprocating motion). As a result, the edges 141a of the blade 140 are pushed back-and-forth against the bone, thereby cutting the target portion of the bone. The debris of the cut bone remains on the base 135 of the guide member 130, and within the cavity 140a of the blade 140.
[0083] At step 1005, the clinician actuates the second control element 116 to actuate the suction device 300. The suction device 300 creates a negative pressure (or suction) in the container 120 to aspirate the debris off the guide member 130 and transfer the debris into the container 120 via the duct 180 for safe collection and disposal. The above process is repeated to remove further portions of the bone to reshape the bone depending upon the clinical requirements. The first and second control elements 115, 116 are alternatingly actuated to cut the bone and remove the associated debris.
[0084] The present bone cutting device offers several advantages over the bone cutting device known in the art. The integration of the duct and the container with the device and corresponding coupling with a suction device, allows for simultaneous removal of the bone debris from the bone cutting site. Consequently, the device maintains a clear operative field and eliminates the need for switching between different instruments for cutting and aspiration during surgery. This enhances workflow efficiency, reduces operative time, and minimizes handling-related challenges within the sterile field. Further, the device facilitates automatic removal of the bone debris with minimal huma intervention, which improves efficiency and reduces human fatigue. The modular and compact design, with removable and autoclavable components such as the duct, container, and handle sections, facilitates easy disassembly, thorough cleaning, and sterilization after each use, thereby reducing cross-contamination risks and ensuring compliance with surgical hygiene protocols. Additionally, the debris collection container enables convenient retrieval of bone fragments and particulate matter for post-procedural analysis, including biopsy, histopathological examination, and microbial culture. The device’s ergonomic handle with integrated grip-enhancing depressions ensures a secure and comfortable hold during operation. Furthermore, the inclusion of features such as a notch to support and align the bone during cutting and a double-acting pneumatic cylinder for precise, controllable blade movement enhances procedural accuracy, safety, and clinical outcomes. A passive design of the device ensures minimal exposure to moving parts of debris. Overall, the proposed device offers a self-contained debris management and provides a safe, low-maintenance device.
[0085] The scope of the invention is only limited by the appended patent claims. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the teachings of the present invention is/are used. , Claims:WE CLAIM

1. A bone cutting device (100) comprising:
a. a guide member (130) comprising a guiding channel (137a);
b. a blade (140) slidably coupled to the guide member (130) and configured to move longitudinally within the guiding channel (137a) of the guide member (130) to cut a portion of a bone;
c. a pneumatic actuator (150) coupled to the blade (140) and configured to drive the blade (140) in a reciprocating motion;
d. a duct (180) coupled to the guide member (130) and comprising a channel (180d) configured to provide a passage for bone debris; and
e. a container (120) fluidically coupled to the duct (180) and configured to store the bone debris.
2. The bone cutting device (100) as claimed in claim 1, wherein the container (120) is disposed within a cavity (110e) provided in a handle (110) of the bone cutting device (100).
3. The bone cutting device (100) as claimed in claim 1, wherein the container (120) comprises an opening (121) fluidically coupled to an outlet (180c1) of the duct (180).
4. The bone cutting device (100) as claimed in claim 1, wherein the guide member (130) comprises a stopper (139) positioned at a distal end of the guide member (130) and configured to restrict the motion of the blade (140).
5. The bone cutting device (100) as claimed in claim 1, wherein the guide member (130) comprises a notch (137c) provided towards a distal end of the guide member (130) and configured to receive a portion of the bone to be cut.
6. The bone cutting device (100) as claimed in claim 1, wherein the blade (140) is provided with an edge (141a) tapered towards a distal end of the blade (140).
7. The bone cutting device (100) as claimed in claim 1, wherein the pneumatic actuator (150) comprises:
a. a cylinder (151) comprising at least one port fluidically coupled to a pneumatic unit (200); and
b. a shaft (153) slidably disposed within the cylinder (151) and coupled to the blade (140) to drive the blade (140) in reciprocating motion.
8. The bone cutting device (100) as claimed in claim 7, wherein the cylinder (151) comprises a first port (151a) and a second port (151b) fluidically coupled to the pneumatic unit (200).
9. The bone cutting device (100) as claimed in claim 7, wherein the bone cutting device (100) comprises a first control element (115) provided in a handle (110) of the bone cutting device (100) and coupled to the pneumatic unit (200), the first control element (115) configured to actuate the pneumatic unit (200).
10. The bone cutting device (100) as claimed in claim 1, wherein the bone cutting device (100) includes a casing (170) coupled to a handle (110) of the bone cutting device (100) and configured to at least partially cover the pneumatic actuator (150).
11. The bone cutting device (100) as claimed in claim 1, wherein the duct (180) comprises an inlet (180a1) fluidically coupled to an opening (135a) of the guide member (130).
12. The bone cutting device (100) as claimed in claim 1, wherein the guide member (130) comprises a base (135) and sidewalls (137) defining the guiding channel (137a).
13. The bone cutting device (100) as claimed in claim 1, wherein the guide member (130) is coupled to a handle (110) of the bone cutting device (100).
14. The bone cutting device (100) as claimed in claim 1, wherein the container (120) is fluidically coupled to a suction device (300) configured to create a suction force in the container (120).
15. The bone cutting device (100) as claimed in claim 14, wherein the bone cutting device (100) comprises a second control element (116) provided in a handle (110) of the bone cutting device (100) and coupled to the suction device (300), the second control element (116) configured to actuate the suction device (300).
16. The bone cutting device (100) as claimed in claim 14, wherein the bone cutting device (100) comprises a connecting element (125) coupled to the container (120), the connecting element (125) comprising:
a. a threaded portion (126a) having external threads (126) configured to engage with inner threads (124) provided within an aperture (123) of the container (120); and
b. a flange (129) coupled to the suction device (300) via a second tube (310).
17. The bone cutting device (100) as claimed in claim 1, wherein the duct (180) comprises:
a. a first portion (180a) provided at a distal end (180f) of the duct (180) and coupled to the guide member (130);
b. a third portion (180c) provided at a proximal end (180e) of the duct (180) and coupled to a handle (110) of the bone cutting device (100); and
c. a second portion (180b) coupling the first portion (180a) and the third portion (180c).
18. The bone cutting device (100) as claimed in claim 17, wherein the second portion (180b) is slanted and makes a predefined angle (A) with a longitudinal axis (X) of the bone cutting device (100), the predefined angle (A) ranging from 155 degrees to 165 degrees.
19. An assembly (10) for cutting a portion of a bone, the assembly (10) comprising:
a. a bone cutting device (100) as claimed in any of claims 1 - 18;
b. a pneumatic unit (200) coupled to the pneumatic actuator (150) of the bone cutting device (100) and configured to drive the pneumatic actuator (150); and
c. a suction device (300) coupled to the container (120) of the bone cutting device (100) and configured to create a suction force to aspirate the bone debris into the container (120).