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:
INSPECTION DEVICE

2. APPLICANT:
Meril Life Sciences Pvt. Ltd., an Indian company of the address Survey No. 135/139 Bilakhia House, Muktanand Marg, Chala, Vapi-Gujarat 396191, 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 the field of medical devices. More specifically, the present invention pertains to an inspection device.
BACKGROUND OF INVENTION
[002] Ear examination and treatment require precise visualization of the ear canal and tympanic membrane to diagnose conditions accurately and provide effective treatment. Traditional otoscopic and inspection devices have been instrumental in medical practice, offering magnification and illumination to assist in the evaluation of ear health. However, despite their widespread use, these conventional devices exhibit several limitations that can hinder thorough examination and treatment, particularly in complex or deep-seated conditions within the ear.
[003] One of the primary drawbacks of traditional otoscopes is their limited reach. Existing inspection devices are designed with a fixed-length speculum, which restricts access to deeper portions of the ear canal. This limitation becomes particularly problematic when assessing patients with narrow, curved, or obstructed ear canals, as well as when attempting to reach areas affected by infections, blockages, or foreign objects. The inability to extend or adjust the device length necessitates alternative methods, such as repositioning the patient, using additional instruments, or applying uncomfortable angles that can affect diagnostic accuracy and patient comfort.
[004] Additionally, while some inspection devices incorporate detachable specula or separate extension attachments to enhance reach, these solutions present their challenges. The detachable components may require frequent replacement, increase the risk of contamination, and disrupt workflow efficiency. Further, the detachable extensions often compromise maneuverability and visibility, as they may introduce additional joints or misalignments that affect image clarity and control. Another significant limitation is the rigidity of conventional otoscopic designs, which prevents adaptability during procedures requiring dynamic movement. Earwax removal, foreign object retrieval, and treatment of infections often demand precise navigation within the ear canal. A device with a fixed-length structure limits the practitioner’s ability to adjust to varying anatomical conditions or patient-specific needs, leading to increased procedure time and potential discomfort for the patient. The lack of an adjustable mechanism in conventional devices forces practitioners to compensate with external adjustments, resulting in potential inefficiencies and suboptimal patient outcomes.
[005] Thus, there arises a need for a telescopic inspection device that overcomes the problems associated with conventional devices.
SUMMARY OF INVENTION
[006] The present invention relates to an inspection device for examining cavities of a body. The inspection device includes an outer barrel with a lumen, and an inner barrel at least partially disposed within the lumen of the outer barrel. The inner barrel is slidable in and out of the outer barrel. The inspection device includes an image acquisition unit coupled to the inner barrel and configured to capture one or more images of a body cavity and an actuator coupled to the outer barrel and the inner barrel, and configured to toggle the inner barrel between a retracted position and an extended position.
[007] 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
[008] 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.
[009] Fig. 1A depicts a perspective view of an inspection device 100, in accordance with an embodiment of the present disclosure.
[0010] Fig. 1B depicts an exploded view of the inspection device 100, in accordance with an embodiment of the present disclosure.
[0011] Fig. 2A depicts a perspective view of a handle 110 of the inspection device 100, in accordance with an embodiment of the present disclosure.
[0012] Fig. 2B depicts a detailed perspective view of a port 202 of the handle 110, in accordance with an embodiment of the present disclosure.
[0013] Fig. 3A depicts a perspective view of a connector 130, in accordance with an embodiment of the present disclosure.
[0014] Fig. 3B depicts a detailed view of a distal portion of the connector 130, in accordance with an embodiment of the present disclosure.
[0015] Figs. 4A and 4B depict perspective views of an actuator 140, in accordance with an embodiment of the present disclosure.
[0016] Fig. 5A depicts a perspective view of an outer barrel 150, in accordance with an embodiment of the present disclosure.
[0017] Fig. 5B depicts a longitudinal cross-sectional view of the outer barrel 150, in accordance with an embodiment of the present disclosure.
[0018] Fig. 6 depicts a perspective view of an inner barrel 160, in accordance with an embodiment of the present disclosure.
[0019] Fig. 7 depicts a perspective view of a holder 170, in accordance with an embodiment of the present disclosure.
[0020] Fig. 8 depicts a perspective view of an image acquisition unit 180, in accordance with an embodiment of the present disclosure.
[0021] Fig. 9 illustrates an assembly of the image acquisition unit 180 and the holder 170, in accordance with an embodiment of the present disclosure.
[0022] Fig. 10 illustrates an assembly of the holder 170 and the inner barrel 160, in accordance with an embodiment of the present disclosure.
[0023] Fig. 11 illustrates an assembly of the holder 170, the inner barrel 160, and the outer barrel 150, in accordance with an embodiment of the present disclosure.
[0024] Fig. 12 illustrates an assembly of the holder 170, the inner barrel 160, the outer barrel 150, and the actuator 140, in accordance with an embodiment of the present disclosure.
[0025] Fig. 13 illustrates an assembly of the holder 170, the inner barrel 160, the outer barrel 150, the actuator 140, and the connector 130, in accordance with an embodiment of the present disclosure.
[0026] Fig. 14A depicts a cross-sectional view of the inspection device 100 in an original position, in accordance with an embodiment of the present disclosure.
[0027] Fig. 14B depicts a detailed cross-sectional view of a distal portion of the inspection device 100 in the original position, in accordance with an embodiment of the present disclosure.
[0028] Fig. 15A depicts a cross-sectional view of the inspection device 100 in an extended position, in accordance with an embodiment of the present disclosure.
[0029] Fig. 15B depicts a detailed cross-sectional view of a distal portion of the inspection device 100 in an extended position, in accordance with an embodiment of the present disclosure.
[0030] Fig. 16 depicts a flowchart of a method 1600 of operating the inspection device 100, in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0031] 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.
[0032] 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.
[0033] 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.
[0034] 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.
[0035] The present disclosure relates to an inspection device (interchangeably referred to as a device hereafter) used for visualization and examination of a cavity of a body, particularly an ear canal, eardrum, tympanic membrane, and other internal structures of the body that require inspection or observation. The device includes a telescopic assembly (also, referred to as a telescopic mechanism) that is capable of advancing and retracting in response to actuation of an actuator of the device. The telescopic mechanism of the device extends the reach of the device and allows medical professionals to reach deeper areas of the ear canal without requiring additional tools, attachments, or patient repositioning. The telescopic assembly of the device provides deeper access into the ear canal to thoroughly examine without compromising visibility.
[0036] Further, the telescopic mechanism of the device eliminates the need for separate extension attachments, reducing the risk of contamination and streamlining clinical workflows. The adjustable nature of the device minimizes patient discomfort by enabling a controlled, gradual extension rather than requiring forced insertions with a rigid instrument. Furthermore, the integration of the telescopic assembly improves visualization by maintaining a direct line of sight to the area being examined. Moreover, in combination with an optical system and illumination, the device ensures high-quality imaging, leading to more accurate diagnoses and targeted treatments. The device provides a versatile, user-friendly, and efficient inspection device that enhances the accuracy, safety, and comfort while addressing the shortcomings of conventional fixed-length otoscopic tools.
[0037] Now referring to the figures, Fig. 1A depicts a perspective view and Fig. 1B depicts an exploded view of an inspection device 100 for examining cavities of a body, in accordance with an embodiment of the present disclosure. The inspection device 100 (interchangeably referred to as device 100 hereafter) is used for visualization and examination of a cavity of a body, particularly an ear canal, an eardrum, a tympanic membrane, and other internal structures of the cavity that require inspection or observation. The device 100 has a proximal end 100a and a distal end 100b. The device 100 includes a handle 110 and a telescopic assembly 120. The handle 110 is provided at the proximal end 100a of the device 100, and the telescopic assembly 120 is provided towards the distal end 100b of the device 100. The telescopic assembly 120 is coupled to the handle 110. The telescopic assembly 120 is configured to extend and retract along the axial direction. The telescopic assembly 120 includes a connector 130, an actuator 140, an outer barrel 150, an inner barrel 160, a holder 170, and an image acquisition unit 180.
[0038] Fig. 2A depicts a perspective view of the handle 110. The handle 110 is used to hold the device 100. In an embodiment, the handle 110 includes a port 202 provided at a distal end of the handle 110. Fig. 2B depicts a detailed view of the port 202 of the handle 110, in accordance with an embodiment of the present disclosure. The port 202 of the handle 110 is configured to receive and couple with the connector 130 using a coupling technique, for example, threaded coupling, snap fit, etc. The port 202 may be threaded, semi-threaded, smooth, etc. In an embodiment, the port 202 has an aperture 204 provided with internal threads 204a. The aperture 204 is configured to receive a proximal portion of the connector 130 and is secured via a threaded coupling.
[0039] The handle 110 is ergonomically designed to provide a secure and comfortable grip, enabling a medical practitioner to operate the device 100 with precision and ease. The ergonomic shape minimizes hand fatigue during prolonged use and enhances maneuverability, ensuring better control over the device 100. The handle 110 is made from lightweight yet durable materials, making it suitable for extended medical procedures without compromising on durability. Additionally, the handle 110 is adapted to house and integrate various components of the device 100, such as a display unit, a battery pack (not shown), and a control unit (not shown). The control unit may include electronic controls for adjusting the focal length of the image acquisition unit 180 or other operational parameters. For example, the control unit may include a processing unit (e.g., a microcontroller) configured to execute instructions to perform various functions of the control unit. The control unit may also include a memory (e.g., non-volatile memory, such as, flash memory, read-only memory, etc.) to store the instructions. In some embodiments, the handle 110 may also feature one or more buttons, a touchscreen interface, and/or haptic feedback mechanisms to enhance precision and usability.
[0040] Fig. 3A depicts a perspective view of the connector 130, in accordance with an embodiment of the present disclosure. The connector 130 is coupled to the handle 110. In an embodiment, the connector 130 is configured to couple the actuator 140 and the handle 110. The connector 130 has a tubular structure and includes a lumen 302 extending from a distal end towards a proximal end of the connector 130. The connector 130 has a proximal portion 304 and a distal portion 306. The proximal portion 304 is configured to be coupled to the port 202 of the handle 110. The proximal portion 304 is configured to reside in the aperture 204 of the port 202. The diameter of the proximal portion 304 corresponds to the diameter of the aperture 204 of the port 202. The distal portion 306 may be threaded or semi-threaded, or smooth, etc. In an embodiment, the distal portion 306 has outer threads 306a configured to mate with the internal threads 204 of the port 202 of the handle 110. The distal portion 306 of the connector 130 is rotatably coupled to the actuator 140.
[0041] The connector 130 includes a plurality of projections 308 (depicted in Fig. 3B) at the distal end of the connector 130. The projections 308 are circumferentially distributed and spaced apart from each other, defining a gap 307 between adjacent projections 308. In an embodiment, the projections 308 are evenly distributed. The gaps 307 between adjacent projections 308 allow the projections 308 to move outward, thus enabling to accommodate the actuator 140, and inward for a snug fit with the actuator 140. Each projection 308 includes a sloping edge 308a that extends inward toward a longitudinal axis of the connector 130 and defines a notch 308b. The notches 308b help to couple the actuator 140 with the connector 130, ensuring a stable connection. It should be noted that the coupling between the connector 130 and the actuator 140 explained herein is merely exemplary, and they may be coupled using any other technique that allows the rotation of the actuator 140. Further, the connector 130 includes a cover plate 310 provided at the proximal end of the connector 130. The cover plate 310 has a plurality of holes 312 configured to provide a passage for electrical elements such as wire, cable, terminals, etc.
[0042] The dimension of the connector 130 depends on the applications of the device 100. The length of the connector 130 may range from 15 mm to 20 mm. In an exemplary embodiment, the length of the connector 130 is 18.5 mm. The diameter of the connector 130 may range from 15 mm to 18 mm. In an exemplary embodiment, the diameter of the connector 130 is 16 mm. The connector 130 may be made of stainless steel 304 (SS 304), polycarbonate (PC), acrylonitrile butadiene styrene (ABS), polyether ether ketone (PEEK), etc. In an exemplary embodiment, the connector 130 is made of a mixture of PC and ABS.
[0043] Figs. 4A and 4B depict perspective views of the actuator 140, in accordance with an embodiment of the present disclosure. The actuator 140 is rotatably coupled to the connector 130, the outer barrel 150, and the inner barrel 160. The actuator 140 is configured to toggle the inner barrel 160 between a retracted position (interchangeably referred to as a retracted state) and an extended position (interchangeably referred to as an extended state). Further, the actuator 140 is capable of receiving a first actuation input and a second actuation input. In response to receipt of the first actuation input, the actuator 140 is configured to move the inner barrel 160 axially in a distal direction. Similarly, in response to receipt of the second actuation input, the actuator 140 is configured to move the inner barrel 140 axially in a proximal direction. In an embodiment, the actuator 140 is configured to rotate about a central axis. In this case, the first actuation input includes rotation of the actuator 140 in a first direction and the second actuation input includes rotation of the actuator 140 in a second direction. The second direction is opposite to the first direction. The first direction and the second direction may be clockwise and anticlockwise, respectively, or vice versa. The actuator 140 has a proximal end 140a and a distal end 140b. The actuator 140 has a tubular structure and includes a lumen 402 extending from the proximal end 140a to the distal end 140b of the actuator 140. The lumen 402 is configured to accommodate a portion of the inner barrel 160.
[0044] The actuator 140 includes a plurality of longitudinal slots 404 provided on an inner surface of the actuator 140, extending from the proximal end 140a towards the distal end 140b for a partial length of the actuator 140. In an embodiment, the actuator 140 includes two longitudinal slots 404 provided diametrically opposite to each other. The longitudinal slots 404 are used to couple the actuator 130 to the inner barrel 160. The actuator 140 includes a first annular ring 406 provided on an outer surface at the proximal end 140a of the actuator 140. The first annular ring 406 is configured to engage with the projections 308 of the connector 130. For example, as the actuator 140 is inserted into the connector, the first annular ring 406 comes into contact with the sloping edges 308a. The sloping edges 308a guide the projections 308 outward, enabling the first annular ring 406 to pass through. Once the first annular ring 406 clears the sloping edges 308a, the projections 308 return inward due to their natural elasticity and engage with the first annular ring 406. This engagement securely holds the annular ring 406 in place, thereby coupling the actuator 140 with the connector 130. The result is a stable yet detachable connection that permits rotational movement of the actuator 140 while maintaining axial retention within the connector 130. The actuator 140 includes a second annular ring 408 provided on an inner surface of the lumen 402 at the distal end 140b of the actuator 140.
[0045] Additionally, or optionally, the actuator 140 includes a plurality of ridges 410 on the outer surface, extending along the length of the actuator 140. The ridges 410 are configured to provide a textured surface that facilitates secure handling, allowing the medical practitioner to rotate the actuator 140 easily and operate or adjust the device 100 with greater precision and control. The dimension of the actuator 140 depends upon the applications of the device 100. The length of the actuator 140 may range from 25 mm to 40 mm. In an exemplary embodiment, the length of the actuator 140 is 31 mm. The diameter of the actuator 140 may range from 14 mm to 16 mm. In an exemplary embodiment, the diameter of the actuator 140 is 15 mm. The actuator 140 may be made of SS 304, PC, ABS, PEEK, etc. In an exemplary embodiment, the actuator 140 is made of SS 304.
[0046] Fig. 5A depicts a perspective view and Fig. 5B depicts a longitudinal cross-sectional view of the outer barrel 150, in accordance with an embodiment of the present disclosure. The outer barrel 150 is coupled to the actuator 140 and the inner barrel 160. The outer barrel 150 has a tubular structure and includes a lumen 502 extending along the length of the outer barrel 150. The lumen 502 is configured to accommodate and guide the inner barrel 160. The outer barrel 150 includes a coupling ring 506 provided on an outer surface at a proximal end 150a of the outer barrel 150. The coupling ring 506 is disposed inside the lumen 402 of the actuator 140 and is configured to engage with the second annular ring 408 of the actuator 140, facilitating coupling between the outer barrel 150 and the actuator 140.
[0047] Additionally, the second annular ring 408 of the actuator 140 acts as a stopper, preventing detachment of the outer barrel 150 from the actuator 140. The outer barrel 150 includes internal threads 504 (depicted in Fig. 5B) provided in the lumen 502, towards a distal end 150b of the outer barrel 150. The internal threads 504 extend for a partial length of the outer barrel 150 and are used to guide the inner barrel 160. The dimension of the outer barrel 150 depends upon the application of the device 100. The length of the outer barrel 150 may range from 50 mm to 70 mm. In an exemplary embodiment, the length of the outer barrel 150 is 60 mm. The diameter of the outer barrel 150 may range from 5 mm to 7 mm. In an exemplary embodiment, the diameter of the outer barrel 150 is 6 mm. The outer barrel 150 may be made of SS 304, PC, ABS, PEEK, etc. In an exemplary embodiment, the outer barrel 150 is made of SS 304.
[0048] Fig. 6 depicts a perspective view of the inner barrel 160, in accordance with an embodiment of the present disclosure. The inner barrel 160 is disposed within and operationally coupled to the outer barrel 150 and the actuator 140. In an embodiment, the inner barrel 160 is at least partially disposed within the lumen 502 of the outer barrel 150. The inner barrel 160 is configured to move axially in response to the rotation of the actuator 140. In an embodiment, the inner barrel 160 is configured to advance (i.e., move axially in a distal direction) in response to the rotation of the actuator 140 in a first direction (e.g., the clockwise direction). In an embodiment, the inner barrel 160 is configured to retract (i.e., move axially in a proximal direction) in response to the rotation of the actuator 140 in a second direction (e.g., the counterclockwise direction). In an embodiment, the inner barrel 160 being slidable in and out of the outer barrel 150. It should be understood that the actuator 140 in the form of a rotating knob as described herein is merely exemplary. In various embodiments, the actuator 140 may include a slider, a roller or the like, capable of moving the inner barrel 160 axially and toggling the inner barrel 160 between an extended state and a retracted state as described herein.
[0049] The inner barrel 160 has a proximal end 160a and a distal end 160b. The inner barrel 160 has a tubular structure and includes a lumen 602 extending along the length of the inner barrel 160. The lumen 602 is configured to accommodate the holder 170.
[0050] The inner barrel 160 has a proximal portion 604 and a distal portion 606. The inner barrel 160 includes outer threads 608 provided on an outer surface of the distal portion 606 of the inner barrel 160. The outer threads 608 are configured to engage with the internal threads 504 of the outer barrel 150. The threaded engagement between the outer barrel 150 and the inner barrel 160 facilitates the inner barrel 160 to advance and retract in response to the corresponding rotation of the actuator 140. The inner barrel 160 includes a plurality of slits 610 provided in the proximal portion 604, and extending towards the proximal end 160a of the inner barrel 160. The slits 610 facilitate insertion of the holder 170. Further, the inner barrel 160 includes a plurality of protrusions 612 at the proximal end 160a of the inner barrel 160. Each protrusion 612 is slidably disposed in a corresponding longitudinal slot 404 of the actuator 404. Each protrusion 612 is configured to slidably engage with the corresponding longitudinal slot 404. This facilitates linear movement of the inner barrel 160 relative to the outer barrel 150 while preventing rotational displacement. The interaction between the protrusions 612 of the inner barrel 160 and the longitudinal slots 404 of the actuator 140 ensures that both rotational and translational forces are effectively directed, allowing for smooth and controlled extension.
[0051] The inner barrel 160 includes a plurality of recesses 614 provided at a distal end of the proximal portion 604. The recesses 614 facilitate coupling between the inner barrel 160 and the holder 170. In an embodiment, the inner barrel 160 includes two recesses 614 that are positioned diametrically opposite to each other.
[0052] The dimension of the inner barrel 160 depends upon the application of the device 100. The length of the inner barrel 160 may range from 70 mm to 90 mm. In an exemplary embodiment, the length of the inner barrel 160 is 80 mm. The diameter of the inner barrel 160 may range from 4 mm to 6 mm. In an exemplary embodiment, the diameter of the inner barrel 160 is 5 mm. The inner barrel 160 may be made of SS 304, PC, ABS, PEEK, etc. In an exemplary embodiment, the inner barrel 160 is made of SS304.
[0053] Fig. 7 depicts a perspective view of the holder 170, in accordance with an embodiment of the present disclosure. The holder 170 is disposed within and coupled to the inner barrel 160. The holder 170 is configured to move with the inner barrel 160. The holder 170 is used to couple the inner barrel 160 and the image acquisition unit 180. In an embodiment, the diameter of the lumen 602 and an outer diameter of the holder 160 correspond to each other. The holder 170 has a proximal end 170a and a distal end 170b. The holder 170 has a tubular structure and includes a lumen 702 extending along the length of the holder 170. The lumen 702 is configured to accommodate the image acquisition unit 180.
[0054] The holder 170 may include a plurality of pegs 704. In an embodiment, the holder 170 includes two pegs 704 provided at the proximal end 170a, and positioned diametrically opposite to each other. Each peg 704 is configured to reside within the corresponding recesses 614 of the inner barrel 160, facilitating coupling between the holder 170 and the inner barrel 160. It is possible that the holder 170 may be coupled to the inner barrel 160 in any other manner without deviating from the scope of the present disclosure. The dimension of the holder 170 depends upon the requirements of the device 100. The length of the holder 170 may range from 65 mm to 70 mm. In an exemplary embodiment, the length of the holder 170 is 68 mm. The diameter of the holder 170 may range from 3 mm to 4 mm. In an exemplary embodiment, the diameter of the holder 170 is 3.5 mm. The holder 170 may be made of SS 304, PC, ABS, PEEK, etc. In an exemplary embodiment, the holder 170 is made of SS304.
[0055] Fig. 8 depicts a perspective view of the image acquisition unit 180, in accordance with an embodiment of the present disclosure. In an embodiment, the image acquisition unit 180 is coupled to the inner barrel 160. For example, the image acquisition unit 180 is coupled to the inner barrel 160 with the help of the holder 170. The image acquisition unit 180 is at least partially disposed within and coupled to the holder 170 and the control unit. The image acquisition unit 180 is configured to capture one or more images of the body cavity and transmit captured images to the control unit, which in turn may transmit the captured images to the display unit of the handle 110. The image acquisition unit 180 includes an image capturing unit 802 and at least one conduit 804. In an embodiment, the image acquisition unit 180 includes two conduits 804. The image capturing unit 802 is disposed within the lumen 702 of the holder 170 at the distal end 170b of the holder 170. The image capturing unit 802 is coupled to the lumen 702 of the holder 170. For example, an outer surface of the image capturing unit 802 is glued to the inner surface of the lumen 702 of the holder 170. The image capturing unit 802 is configured to capture one or more images of the cavity. In the context of the present disclosure, the one or more images include still image(s), video(s) or combination thereof.
[0056] In an embodiment, the image capturing unit 802 includes a camera capable of capturing images. Any known type of cameral capable of capturing images of a body cavity may be used without deviating from the scope of the present disclosure. The diameter of the image capturing unit 802 corresponds to the dimension of the lumen 702 of the holder 170. Each of the conduits 804 extends from the image capturing unit 802 through the lumen 702 of the holder 170 toward the proximal end 100b of the device 100. In an embodiment, each of the conduits 804 may house at least one cable therein. The at least one cable may include electrical wire(s), optical fiber(s), or a combination thereof, capable of transferring power signal(s), control signal(s), and the captured image data between the image capturing unit and the control unit. The use of multiple conduits 804 may support separate functions, for instance, one conduit may be dedicated to power supply while another may handle data transmission or illumination control, thereby enhancing operational reliability and signal clarity. Each conduit 804 of the image acquisition unit 180 passes through the corresponding hole 312 of the cover plate 310. In other words, each of the holes 312 is configured to provide a passage to a corresponding conduit 804 of the at least one conduit 804. In an embodiment, the conduits 804 extend beyond the holes 312 and continue into the handle 110 of the device 100, allowing the cables disposed in the conduits 804 to be routed toward and operatively connected to the control unit. The coupling between the conduits 804 and the holes 312 of the cover plate 310 ensures secure positioning and prevents unintended displacement during operation or handling.
[0057] It should be understood that the coupling of the image acquisition unit 180 (and the image capturing unit 802) with the inner barrel 160 via the holder 170 is merely exemplary. The image acquisition unit 180 may be coupled to the inner barrel 160 in any other manner, with or without the holder 170, provided that the image acquisition unit 180 is configured to move with the inner barrel 160. For example, the outer surface of the image capturing unit 802 may be glued to an inner surface of the inner barrel 160 at the distal end 160b.
[0058] An embodiment of an assembly of the telescopic assembly 120 is explained below. The image acquisition unit 180 is positioned within the lumen 702 of the holder 170. The image capturing unit 802 of the image acquisition unit 180 is provided at the distal end 170b of the holder 170 (as depicted in Fig. 9). The holder 170, along with the image acquisition unit 180, is then inserted into the inner barrel 160 from the proximal end 160a. The pegs 704 of the holder 170 engages with corresponding recesses 614 of the inner barrel 160, facilitating coupling between the inner barrel 160 and the holder 170 (as depicted in Fig. 10). In an embodiment, the pegs 704 of the holder 170 are initially aligned with the corresponding slits 610 of the inner barrel 160. The slits 610 function as guiding channels, enabling the pegs 704 to pass through in a controlled and precise manner. As the holder 170 is further inserted into the inner barrel 160, the pegs 704 travel along the length of the slits 610 until they reach the corresponding recesses 614. Once aligned with the recesses 614, the holder 170 is slightly rotated, allowing the pegs 704 to seat securely within the recesses, thereby completing the coupling between the holder 170 and the inner barrel 160. The length of the holder 170 and the distal portion 606 of the inner barrel 160 are designed such that of the holder 170 except the pegs 704 seats completely within the inner barrel 160. Once this coupling is established, the inner barrel 160 having the holder 170 and the image acquisition unit 180 therein, is inserted into the outer barrel 150 from the proximal end 150b of the outer barrel 150. As the inner barrel 160 advances, the outer threads 608 of the inner barrel 160 engage with the corresponding internal threads 504 of the outer barrel 150, ensuring a threaded coupling that securely fastens the outer barrel 150 and the inner barrel 160 together. The insertion continues until the distal portion 606 of the inner barrel 160 is entirely enclosed within the lumen 602 of the outer barrel 150. At this point, the proximal end 150a of the outer barrel 150 is aligned with the junction of the proximal portion 604 and the distal portion 606 of the inner barrel160, and the distal end 160b of the inner barrel 160 aligns with the distal end 150b of the outer barrel 150 (as depicted in Fig. 11). The assembled structure is then inserted into the actuator 140 from the proximal end 140a until the coupling ring 506 of the outer barrel 150 engages with the second annular ring 408 of the actuator 140. Simultaneously, the protrusions 612 on the inner barrel 160 reside within the corresponding longitudinal slots of the actuator 140, securing the connection between the outer barrel 150 and the actuator 140 (as depicted in Fig. 12). Further, the proximal end of the fully assembled structure is coupled to the distal end of the connector 130 through the engagement of projections 308 of the connector 130 with the first annular ring 406 of the actuator 140 using snap-fit, thereby completing the assembly of the telescopic assembly 120 (as depicted in Fig. 13). The telescopic assembly 120 is then coupled to the handle 110 through engagement between the internal threads 204a and the outer threads 306a of the connector 130, completing the assembly of the device 100.
[0059] An exemplary working of the device 100 is now explained with reference to Figs. 14A to 15B. Fig. 14A illustrates a cross-sectional view of the inspection device 100 in an original position (interchangeably referred to as a retracted position), and Fig. 14B provides a detailed cross-sectional view of the distal portion of the device 100 in the original position, in accordance with an embodiment of the present disclosure. Initially, the device 100 may be in the original or retracted position. In the retracted position, the inner barrel 160 is partially housed within the lumen 502 of the outer barrel 150 and partially within the lumen 402 of the actuator 140. In an embodiment, the proximal portion 604 of the inner barrel 160 is positioned within the lumen 402 of the actuator 140, while the distal portion 606 of the inner barrel 160 extends into and is supported by the lumen 502 of the outer barrel 150. Thus, in the retracted state, the distal end 160b of the inner barrel 160 resides within the lumen 502 of the outer barrel 150. In an assembled configuration, the distal end 160b of the inner barrel 160 is substantially aligned with the distal end 150b of the outer barrel 150, ensuring precise axial alignment and structural continuity between the components.
[0060] The protrusions 612 of the inner barrel 160 are positioned within the respective longitudinal slots 404 towards the proximal end 140a of the actuator 140. Additionally, the holder 170 is securely contained within the inner barrel 160, and the image acquisition unit 180 is positioned at the distal end 170b of the inner barrel 160, residing within the outer barrel 150. This original position ensures that the device 100 is in a ready-to-use, compact state.
[0061] To transition the device 100 from the original to an extended position, the medical practitioner rotates the actuator 140 in the first direction (e.g., clockwise direction). The rotational movement of the actuator 140 causes the inner barrel 160 to rotate in the first direction. The threaded engagement between the outer threads 608 of the inner barrel 160 and the internal threads 504 of the outer barrel 150 converts the rotational motion into axial motion, causing the inner barrel 160 to advance forward. Simultaneously, the protrusions 612 of the inner barrel 160 slide along the corresponding longitudinal slots 404 of the actuator 140, moving toward the distal end 140b of the actuator 140. This coordinated motion of the actuator 140 causes the distal end 160b of inner barrel 160 along with the holder 170 and the image acquisition unit 180, to protrude out from the outer barrel 150 and extend beyond the distal end 150b of the outer barrel 150. This sets the inspection device 100 in the extended position. Fig. 15A illustrates a cross-sectional view of the inspection device 100 in the extended position, and Fig. 15B illustrates a detailed cross-sectional view of the distal portion of the device 100 in the extended position, in accordance with an embodiment of the present disclosure. As shown, in the extended state, the distal end 160b of the inner barrel 160 protrudes out from the distal end 150b of the outer barrel 150. Similarly, the distal end 170b of the holder 170 and the distal end of the image acquisition unit 180 protrude out from the distal end 150b of the outer barrel 150 in the extended state.
[0062] As the inner barrel 160 extends, it brings the image acquisition unit 180 closer to the target inspection area. This extension of the inner barrel 160 significantly improves accessibility and visualization, enabling medical practitioners to capture high-resolution images and videos of deeper or more intricate anatomical structures, such as the ear canal or tympanic membrane. The inner barrel 160 ensures that the image acquisition unit 180 remains precisely aligned, minimizing the risk of misalignment and preserving imaging accuracy. A length of the inner barrel 160 protruding out from the outer barrel 160 depends on a degree of rotation of the actuator 140.
[0063] After the inspection is complete, the device 100 can be returned to the original position by rotating the actuator 140 in the second direction (e.g., counterclockwise direction). This causes the inner barrel 160 to rotate counterclockwise. The threaded coupling between the inner barrel 160 and the outer barrel 150 translates the rotational motion to the axial motion and causes the inner barrel 160 to retract (i.e., move in the proximal direction). Further, the protrusions 612 slide back along the longitudinal slots 404 toward the proximal end 140a of the actuator 140. The actuator 140 is rotated until the inner barrel 160 fully retracts within the outer barrel 150 and the distal end 160b of the inner barrel 160 aligns with the distal end 150b of the outer barrel 150. Thus, the device 100 is restored to the original position.
[0064] Fig. 16 depicts a flowchart of a method 1600 for inspecting a body cavity using the inspection device 100, in accordance with an embodiment of the present disclosure. At step 1610, the distal end 150b of the outer barrel 150 is inserted into a body cavity, such as the ear canal or nasal passage, while ensuring patient comfort and safety. The ergonomic design of the device 100 facilitates easy insertion, and optional guiding elements may assist in positioning the device 100 correctly within the body cavity.
[0065] At step 1620, the medical practitioner rotates the actuator 140 in the first direction (clockwise direction) until the inner barrel 160 extends by a desired length, as required by the procedure and/or the patient's anatomy. The rotational movement actuator 140 causes the inner barrel 160, along with the holder 170 and the image acquisition unit 180, to advance beyond the distal end 150b of the outer barrel 150 as explained earlier. The medical practitioner can control the amount of extension of the inner barrel 160 by controlling the degree of rotation of the actuator 140. This controlled extension allows the image acquisition unit 180 to be positioned optimally for capturing detailed visuals of the inspection site.
[0066] At step 1630, the image acquisition unit 180 captures one or more images of internal structures/tissue of the body cavity and transmits the captured data to the control unit of the device 100. The captured images may be displayed on the display unit of the device in real-time.
[0067] At step 1640, once the inspection is complete, the actuator 140 is rotated counterclockwise to retract the inner barrel 160 back into the outer barrel 150 to the original position.
[0068] At step 1650, the inspection device 100 is removed from the body cavity. Further, if necessary, the device 100 may be cleaned or sterilized for future use.
[0069] The inspection device 100 is designed to ensure a systematic and controlled approach to inspecting internal cavities. The operation of the device 100 enhances ease of use, improves imaging accuracy, and promotes patient safety by enabling smooth transitions between extension and retraction. These features facilitate effective examinations in medical and diagnostic applications.
[0070] The proposed inspection device offers several advantages that enhance medical diagnostics and examinations of the body cavity. The extendable configuration of the device provides accessibility to deeper or intricate internal structures within body cavities, such as the ear canal or nasal passage, enabling medical practitioners to obtain high-resolution images with greater clarity. The controlled extension and retraction mechanism, operated via the rotational movement of the actuator, ensures precise positioning of the image acquisition unit, reducing the risk of discomfort or injury to the patient. Unlike conventional devices that require separate extension components, the integrated extendable mechanism eliminates the need for additional attachments, streamlining the inspection process, reducing required inventory and associated costs. Additionally, the device's ergonomic design facilitates easy handling and maneuverability, making it suitable for both clinical and at-home use. Further, the device's compatibility with sterilization processes ensures hygiene and reusability, making it a cost-effective and reliable tool for routine medical inspections.
[0071] 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. An inspection device (100) for examining cavities of a body, the inspection device (100) comprising:
a. an outer barrel (150) comprising a lumen (502);
b. an inner barrel (160) at least partially disposed within the lumen (502) of the outer barrel (150), the inner barrel (160) being slidable in and out of the outer barrel (150);
c. an image acquisition unit (180) coupled to the inner barrel (160) and configured to capture one or more images of a body cavity; and
d. an actuator (140) coupled to the outer barrel (150) and the inner barrel (160), and configured to toggle the inner barrel (150) between a retracted position and an extended position.
2. The inspection device (100) as claimed in claim 1, wherein the actuator (140) comprises a plurality of longitudinal slots (404) and the inner barrel (160) comprises a plurality of protrusion (612) provided at a proximal end (160a) of the inner barrel (160), each protrusion (612) is slidably disposed within a corresponding longitudinal slot (404) of the plurality of longitudinal slots (404).
3. The inspection device (100) as claimed in claim 1, wherein the outer barrel (150) comprises internal threads (504) and the inner barrel (160) comprises outer threads (608) configured to engage with the internal threads (504) of the outer barrel (150).
4. The inspection device (100) as claimed in claim 1, wherein the actuator (140) comprises a second annular ring (408) provided at a distal end (140b) of the actuator (104), and the outer barrel (150) comprises a coupling ring (506) provided at a proximal end (150a) of the outer barrel (150) and configured to engage with the second annular ring (408) of the actuator (140).
5. The inspection device (100) as claimed in claim 1, wherein the inspection device (100) comprises a holder (170) disposed within and coupled to the inner barrel (160), wherein the image acquisition unit (180) is at least partially disposed within and coupled to the holder (170).
6. The inspection device (100) as claimed in claim 5, wherein the inner barrel (160) comprises a plurality of recesses (614) and the holder (170) comprises a plurality of pegs (704), each peg (704) configured to reside within a corresponding recess (614) of the inner barrel (160).
7. The inspection device (100) as claimed in claim 5, wherein the image acquisition unit (180) comprises an image capturing unit (802) disposed within and coupled to a lumen (702) the holder (170) and at least one conduit (804) extending from the image capturing unit (802) through the lumen (702) of the holder (170) towards a proximal end (100b) of the inspection device (100).
8. The inspection device (100) as claimed in claim 1, wherein the inspection device (100) comprises:
a. a handle (110); and
b. a connector (130) configured to couple the actuator (140) and the handle (110).
9. The inspection device (100) as claimed in claim 8, wherein the handle (110) comprises a port (202) comprising an aperture (204) provided with internal threads (204a), and the connector (130) comprising a proximal portion (304) configured to reside in the aperture (204) of the port (202) and outer threads (306a) provided on an outer surface of the connector (130) and configured to engage with the internal threads (204a) of the port (202).
10. The inspection device (100) as claimed in claim 8, wherein the connector (130) comprises a plurality of projections (308) provided at a distal end of the connector (130), and the actuator (140) comprises a first annular ring (406) provided on an outer surface of the actuator (140) at a proximal end (140b) of the actuator (140) and configured to engage with the plurality of projections (308).
11. The inspection device (100) as claimed in claim 8, wherein the connector (130) comprises a cover plate (310) at a proximal end of the connector (130), the cover plate (310) having a plurality of holes (312), each of the plurality of holes (312) is configured to provide a passage to a corresponding conduit (804) of at least one conduit (804) of the image acquisition unit (180).
12. The inspection device (100) as claimed in claim 1, wherein the image acquisition unit (180) comprises an image capturing unit (802) configured to capture the one or more images and at least one conduit (804), each conduit (804) housing at least one cable therein.
13. The inspection device (100) as claimed in claim 1, wherein in the retracted position, a distal end (160b) of the inner barrel (160) resides within the lumen (502) of the outer barrel (150), and wherein in the extended position, the distal end (160b) of the inner barrel (160) protrudes out from the outer barrel (150) in a distal direction.
14. The inspection device (100) as claimed in claim 1, wherein the actuator (140) is capable of receiving a first actuation input and a second actuation input, wherein:
a. in response receipt of the first actuation input, the actuator (140) is configured to move the inner barrel (160) in a distal direction; and
b. in response to receipt of the second actuation input, the actuator (140) is configured to move the inner barrel (160) in a proximal direction.
15. The inspection device (100) as claimed in claim 14, wherein the actuator (140) is rotatable about a central axis, wherein the first actuation input comprises rotation of the actuator (140) in a first direction and the second actuation input comprise rotation of the actuator (140) in a second direction, the second direction being opposite to the first direction.