Description:A CONTROLLED FLUSH SYRINGE ASSEMBLY
TECHNICAL FIELD
[0001] Embodiments of the present disclosure relate generally to medical devices, and more particularly relate to a controlled flush syringe assembly for controlled flushing of fluid.
BACKGROUND
[0002] Generally, syringe assemblies are well known in the medical field for dispensing fluids, such as medication. A conventional syringe includes a syringe barrel with an opening at one end and a plunger mechanism disposed through the other end. Similar to syringe a liquid flusher syringe is a specialized device designed to remove blockages in Intravenous (IV) sets, intravenous syringe needles, and intravenous needles, as well as for cleaning medical needles. It functions as a syringe prefilled with saline water or other appropriate liquids for administration into the body. Additionally, these prefilled syringes are sometimes utilized for injecting medicine in operation theatres.
[0003] Conventionally, existing liquid flushers operate by prefilling the syringe or cylinder with a fixed quantity of liquid. These flushers are then connected to blocked IV sets, IV needles, or regular needles obstructed by coagulated blood, mucus, or serum. The liquid is manually flushed out by pulling and pushing the cylinder and piston of the syringe. However, due to the unknown amount of force required to clear the blockage, the exact volume of liquid flushed out cannot be controlled. Users must rely on their ability to control the amount of liquid flushed, which can be a single or multiple flush depending on their proficiency. The approximate amount of liquid flushed is determined by the smoothness of the flow.
[0004] Further, conventional flush syringe assemblies disclose ability to generate pulsatile movement of the plunger rod within a syringe barrel, while preventing excessive pressure on the catheter. These assemblies consist of a syringe barrel containing a chamber with flush solution, a plunger rod with a stopper and a pulsing element, and a thumb press attached to the plunger rod with a compressible pulse control element. The interaction between the first and second pulsing elements creates an engagement force that produces pulsatile movement of the plunger rod. The compressible pulse control element can be compressed to generate a greater compression force than the engagement force of the pulsing elements. Another conventional syringe-based device discloses a housing with a port and an actuator mechanism comprising a first member and a second member that can move within the housing. The first member contains a syringe body and a plunger with a seal, while the second member includes a seal, a channel, and a valve connected to the channel.
[0005] However, the conventional devices may lack precise control. For example, the volume of liquid flushed from the cylinder cannot be accurately controlled or stopped at a specific volume using syringe or cylinder and piston. Further, the conventional devices may include uncontrolled pressure, for example, if excessive pressure is applied to flush the liquid from the cylinder, there is no control over the force, speed, and volume of the liquid expelled. Furthermore, the conventional devices may possess risk of damage, for example, when a high force exerted on the liquid receiver wall during flushing poses a risk of damaging the arteries, veins, or body tissues in the case of human use. Additionally, the conventional devices are disconnecting and have spilling issue. For example, exceeding the connection force between the flusher and the receiver tube due to uncontrolled applied force can result in disconnection, causing all the liquid in the flusher to spill out and become exposed to the environment. Hence, the conventional liquid flusher devices have limitations in terms of controlling the volume of liquid flushed, pressure regulation, potential harm to the body, and the risk of disconnection and spills.
[0006] Consequently, there is a need in the art for an improved controlled flush syringe assembly for controlled flushing of fluid, to address at least the aforementioned issues in the prior art.
SUMMARY
[0007] This summary is provided to introduce a selection of concepts, in a simple manner, which is further described in the detailed description of the disclosure. This summary is neither intended to identify key or essential inventive concepts of the subject matter nor to determine the scope of the disclosure.
[0008] An aspect of the present disclosure provides a controlled flush syringe assembly. The flush syringe assembly includes a barrel with a side wall with an inside surface forming a chamber for retaining fluid. The barrel includes an open first proximal end and a first distal end. The barrel includes at least two finger grips, at the first proximal end, protruding outwards from the side wall. Each of the at least two finger grips include a groove. Further, the flush syringe assembly includes a circular protrusion element at the first proximal end, under the at least two finger grips, and spaced with a pre-defined dimension in a distal direction. Furthermore, the flush syringe assembly includes a flat ring free-rotatably coupled to the first proximal end of the barrel. The flat ring is rotatably coupled between the circular protrusion element and the at least two finger grips. The flat ring comprises a plurality of radial grips for providing grip to fingers of a user. Additionally, the flush syringe assembly includes a stopper ring comprised of a butterfly shaped aperture and a pulsing element in each of at least two edges of the butterfly shaped aperture. The stopper ring comprises at least two grooves and a locking notch associated with each of the at least two grooves. The stopper ring comprises a discontinued slot.
[0009] Further, the flush syringe assembly includes a plunger rod slidably disposed within the chamber of the barrel through the butterfly shaped aperture of the stopper ring. The plunger rod includes a second distal end, a second proximal end, and a cruciform shaped plunger rod body extending from the second distal end to the second proximal end. Additionally, the plunger rod includes a plurality of stopper pulsing elements criss-crossed from the second distal end to the second proximal end on at least two opposite walls of the cruciform shaped plunger rod body. The criss-crossed is with respect to side walls of each of the opposite walls.
[0010] Further, the plunger rod is configured to provide a plurality of controlled flush of the fluid in the chamber, by a controlled contact of the pulsing element in the stopper ring with the plurality of stopper pulsing elements. Furthermore, the controlled contact is based on alternate rotation, for each flush, of the plunger rod, for a pre-defined distance, against the barrel. The alternate rotation of the plunger rod corresponds to clockwise rotation and anti-clockwise rotation, for each flush. The alternate rotation of the plunger rod is to provide the plurality of controlled flush of the fluid. The flat ring, and the finger grip coupled to the plunger rod provides resistance between the finger grip coupled to the plunger rod and the fingers of the user at the flat ring, when there is a simultaneous alternate rotation of the plunger rod by the user.
[0011] To further clarify the advantages and features of the present disclosure, a more particular description of the disclosure will follow by reference to specific embodiments thereof, which are illustrated in the appended figures. It is to be appreciated that these figures depict only typical embodiments of the disclosure and are therefore not to be considered limiting in scope. The disclosure will be described and explained with additional specificity and detail with the appended figures.
BRIEF DESCRIPTION OF THE ACCOMPANYING DIAGRAMS
[0012] The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, serve to explain the disclosed principles. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system and/or methods in accordance with embodiments of the present subject matter are now described, by way of example only, and with reference to the accompanying figures, in which:
[0013] FIG. 1A illustrates a front view of a controlled flush syringe assembly, in accordance with some embodiments of the present disclosure;
[0014] FIG. 1B illustrates a perspective view of a controlled flush syringe assembly, in accordance with some embodiments of the present disclosure;
[0015] FIG. 1C illustrates exploded view and cross-sectional view of a controlled flush syringe assembly, in accordance with some embodiments of the present disclosure;
[0016] FIG. 2A illustrates a front view of a barrel, in accordance with some embodiments of the present disclosure;
[0017] FIG. 2B illustrates a side view of a barrel, in accordance with some embodiments of the present disclosure;
[0018] FIG. 2C illustrates a cross-sectional view of a barrel, in accordance with some embodiments of present disclosure;
[0019] FIG. 3 illustrates a front view of a plunger rod, in accordance with some embodiments of present disclosure;
[0020] FIG. 4A illustrates a top view and a side view of a stopper ring, in accordance with some embodiments of present disclosure;
[0021] FIG. 4B illustrates a rear view of a flat ring, in accordance with some embodiments of present disclosure; and
[0022] FIG. 5 illustrates a side view of a piston, in accordance with some embodiments of present disclosure.
[0023] Further, those skilled in the art will appreciate that elements in the figures are illustrated for simplicity and may not have necessarily been drawn to scale. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the figures by conventional symbols, and the figures may show only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the figures with details that will be readily apparent to those skilled in the art having the benefit of the description herein.
DETAILED DESCRIPTION
[0024] For the purpose of promoting an understanding of the principles of the disclosure, reference will now be made to the embodiment illustrated in the figures and specific language will be used to describe them. It will nevertheless be understood that no limitation of the scope of the disclosure is thereby intended. Such alterations and further modifications in the illustrated system, and such further applications of the principles of the disclosure as would normally occur to those skilled in the art are to be construed as being within the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of the disclosure and are not intended to be restrictive thereof.
[0025] In the present document, the word “exemplary” is used herein to mean “serving as an example, instance, or illustration”. Any embodiment or implementation of the present subject matter described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.
[0026] While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however that it is not intended to limit the disclosure to the forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.
[0027] The terms “comprises”, “comprising”, “includes”, “including” or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device or method that includes a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or method.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs. The system, methods, and examples provided herein are only illustrative and not intended to be limiting.
[0029] Embodiments of the present disclosure provides an improved controlled flush syringe assembly. The present disclosure enables precise control of the flush syringe assembly. The assembly allows for accurate control of the volume of liquid flushed from the cylinder, enabling precise flushing at specific volumes. This addresses the lack of control found in conventional devices. Further, present disclosure enables controlled pressure in the flush syringe assembly. Unlike conventional devices, the improved assembly provides control over the force, speed, and volume of the liquid expelled during flushing. Excessive pressure can be avoided, minimizing the risk of complications. Furthermore, the present disclosure reduces risk of damage, by mitigating the risk of damage to arteries, veins, and body tissues by preventing the application of excessive force on the liquid receiver wall. This ensures safer usage, especially in medical settings. Additionally, the present disclosure enhances stability and prevention of spills from the flush syringe assembly. Unlike conventional devices that may disconnect and cause liquid spillage, the improved assembly features a secure connection between the flusher and the receiver tube. This minimizes the risk of disconnection and exposure of the liquid to the environment.
[0030] A description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the invention. In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
[0031] Referring now to the drawings, and more particularly to FIGs. 1A through FIG. 5 where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred embodiments and these embodiments are described in the context of the following exemplary system and/or method.
[0032] FIG. 1A illustrates a front view of a controlled flush syringe assembly, in accordance with some embodiments of the present disclosure. The controlled flush syringe assembly 100 in the form of a syringe includes a barrel 102, a flat ring 104, a stopper ring 106, and a plunger rod 108. In an embodiment, the barrel 102 may include a side wall with an inside surface forming a chamber for retaining fluid. The fluid may include, but are not limited to, normal saline solution, heparin solution, sterile water, sterile water, antibiotic solution, antimicrobial solution, sterile flush solutions with additives, and the like. The controlled flush syringe assembly 100 may be used to draw and flush any fluid, liquid, and gas.
[0033] Further, the barrel 102 may include an open first proximal end and a first distal end. The barrel 102 includes at least two finger grips (not shown in FIG. 1A and 1B), at the first proximal end, protruding outwards from the side wall. Each of the at least two finger grips include a groove (not shown in FIG. 1A and 1B). Further, the barrel 102 may include a circular protrusion element (not shown in FIG. 1A and 1B) at the first proximal end, under the at least two finger grips, and spaced with a pre-defined dimension in a distal direction.
[0034] In an embodiment, the flat ring 104 may free-rotatably be coupled to the first proximal end of the barrel 102. The flat ring 104 may be rotatably coupled between the circular protrusion element and the at least two finger grips of the barrel 102. The flat ring 104 includes a plurality of radial grips 116 shown in FIG. 1B, for providing grip to fingers of a user.
[0035] In an embodiment, the stopper ring 106 may include a butterfly shaped aperture and a pulsing element (not shown in FIG. 1A and 1B) in each of at least two edges of the butterfly shaped aperture. The stopper ring 106 may include at least two grooves and a locking notch associated with each of the at least two grooves. The stopper ring 106 may include a discontinued slot (not shown in FIG. 1A and 1B).
[0036] In an embodiment, the plunger rod 108 may be slidably disposed within the chamber of the barrel 102 through the butterfly shaped aperture of the stopper ring 106. The plunger rod 108 may include a second distal end, a second proximal end, and a cruciform shaped plunger rod body extending from the second distal end to the second proximal end. In an embodiment, the plunger rod 108 may include a plurality of stopper pulsing elements 110 criss-crossed from the second distal end to the second proximal end on at least two opposite walls of the cruciform shaped plunger rod body. The criss-crossed is with respect to side walls of each of the opposite walls of the plunger rod 108. Further, the plunger rod 108 may include a finger grip 112 in a radial shape coupled to the second proximal end.
[0037] In an embodiment, the plunger rod 108 may be configured to provide a plurality of controlled flush of the fluid in the chamber, by a controlled contact of the pulsing element in the stopper ring 106 with the plurality of stopper pulsing elements 110. The controlled contact is based on alternate rotation, for each flush, of the plunger rod 108, for a pre-defined distance, against the barrel 102. The alternate rotation of the plunger rod 108 corresponds to clockwise rotation and anti-clockwise rotation, for each flush. The alternate rotation of the plunger rod 108 may be to provide the plurality of controlled flush of the fluid. The flat ring 104, and the finger grip 112 coupled to the plunger rod 108 may provide resistance between the finger grip 112 coupled to the plunger rod 108 and the fingers of the user at the flat ring 104, when there is a simultaneous alternate rotation of the plunger rod 108 by the user. In an embodiment, the plunger rod 108 may include a piston 114 disposed at the second distal end of the plunger rod 108 to form a fluid-tight seal with the inside surface of the barrel 102.
[0038] For example, the controlled flush syringe assembly 100 may be pre-filled with flush solution (i.e., fluid) during or after the assembly 100 using sterile filling methods. In such prefilled syringes, a tip cap may be attached to the tip to seal the passageway of the barrel 102. In embodiments in which the chamber is provided empty, to fill the chamber with the desired amount of flush solution, a needle assembly or hub may be attached to the tip. Exemplary flush solutions include, but not limited to, saline flush solution and/or heparin lock flush solution. These solutions are known in the art and readily available. An example of a saline flush solution is 0.9% sodium chloride for injection.
[0039] To use the controlled flush syringe assembly 100 described herein to remove debris from a catheter or, in other words, to expel flush solution having pulsing flow into a catheter, the plunger rod 108 and the stopper ring 106 are assembled and inserted into the barrel 102 that is filled with the desired amount of flush solution. In another example, the controlled flush syringe assemblies described herein may also include visual or other indication elements to indicate the position of the pulsing elements, indicate whether movement of the plunger rod within the barrel will be pulsatile or continuous and unimpeded.
[0040] FIG. 1C illustrates exploded view and cross-sectional view of a controlled flush syringe assembly 100, in accordance with some embodiments of the present disclosure. In an embodiment, the stopper ring 106 may include a butterfly shaped aperture 118 and the pulsing element in each of at least two edges of the butterfly shaped aperture 118. The stopper ring 106 may include at least two grooves and a locking notch associated with each of the at least two grooves. The stopper ring 106 may include a discontinued slot 120. The discontinued slot 120 may be configured for at least one of an increasing diameter and decreasing the diameter of the stopper ring 106 in a spiral direction. The stopper ring 106 may be radially displaced at the discontinued slot for the plunger rod 108 to slide into the stopper ring 106. The diameter of the stopper ring 106 may be smaller than the diameter of the plunger rod 108. In an embodiment, the plunger rod 108 may be slidably disposed within the chamber of the barrel 102 through the butterfly shaped aperture 118 of the stopper ring 106.
[0041] For example, the plunger rod 108 may first be slidable placed through the stoper ring 106 by displacing stoper ring edges within the butterfly shaped aperture 118, in a opposite direction to create an enough space so that the plunger rod 108 is slidable through the stoper ring 106. While sliding the plunger rod 108 through the stoper ring 106, elongated portions with criss-crossed stopper pulsing elements 110 may be aligned within the at least two stopper slots of the stoper ring 106. After sliding the plunger rod 108 through the stoper ring 106 the piston 114 is connected to the plunger rod 108, before sliding the plunger rod 108 with the piston 114 into the barrel 102. The barrel 102 may be filled with fluid/liquid that is flushable by the plunger rod 108 and the piston 114. Further, the plunger rod 108 with the piston 114 may be slidable placed in the barrel 102 at the first distal end. At this point, the stoper ring 106 may be pressed against the at least two finger grips 210 of the barrel 102 for locking the stoper ring 106 with the at least two finger grips 210 of the barrel 102.
[0042] The flat ring 104 may be a finger grip and rotatable and/or is slidable placed between the barrel 102 and the circular protrusion element 208, which at the first distal end and below the at least two finger grips 210 of the barrel 102. At this point, the flat ring 104 is rotatable but not slidable along the barrel 102. The radial gripes of the flat ring 104 provides resistance between the human finger and the flat ring 104.
[0043] To flush the liquid from the barrel 102, through an exit hole in a controlled volume, the plunger rod 108 may be pressed against the barrel 102, while pulling the flat ring 104, simultaneously. This push pull action moves the plunger rod 108 from the first proximal end towards the first distal end of the barrel 102 by expelling the liquid or air from the chamber, until a left diagonal stopper pulsing elements encounters left slot edges of the stopper ring 106. At this point, the plunger rod 108 may stop moving and the fluid or air has expelled away by only small volume of liquid equivalent to the plunger rod 108 displacement volume in the barrel 102. To expel subsequent controlled volume of fluid or air from the chamber, the plunger rod 108 and the flat ring 104 may be rotated right until the plunger rod 108 encounters right slot edges of the stopper ring 106, while the push pull action is continued during the rotation. At this point left diagonal stopper pulsing elements is away from the left slot edges of the stopper ring 106, as the plunger rod 108 reaches the right slot edges of the stopper ring 106. The plunger rod 108 continues to move towards the first distal end of the barrel 102, due to the push pull action of the plunger rod, and the flat ring 104, until the right diagonal stopper pulsing elements encounter the right slot edges of the stopper ring 106. At this point, once gain the plunger rod stops to move and the fluid may have expelled from the chamber and stopped. Furthermore, the subsequent controlled volume may be expelled by rotating the plunger rod 108 and the flat ring 106 to the left until the plunger rod 108 encounters the left slot edges of the stopper ring 106 with push pull action. This cycle of rotation and push pull action can be stopped, or it can be continued until the piston reaches the first distal end of the barrel 102.
[0044] FIG. 2A illustrates a front view of a barrel 102, in accordance with some embodiments of the present disclosure. In an embodiment, the barrel 102 may include a side wall with an inside surface forming a chamber 202 for retaining fluid. The barrel 102 may include an open first proximal end 204 and a first distal end 206. The barrel 102 may include at least two finger grips 210 at the first proximal end 204, protruding outwards from the side wall. Each of the at least two finger grips 210 may include a groove 212 (side view). In an embodiment, the barrel 102 may include a circular protrusion element 208 at the first proximal end 204, under the at least two finger grips 210, and spaced with a pre-defined dimension in a distal direction.
[0045] In an embodiment, the first distal end 204 of the barrel 102 may include a distal wall 214 with a tip extending in distal direction. The distal wall 214 with a tip extending in distal direction comprises a locking element 216 to lock a needle for flushing the fluid. Further, the barrel 102 may include a passageway 218 in fluid communication with the chamber 202 as shown in FIG. 2B. Each of the at least two finger grips 210 of the barrel 102 may include a groove 220 for locking the stopper ring 106 through a locking notch (not shown) associated with each of at least two grooves of the stopper ring 106.
[0046] For example, the flat ring 104 may be slidably placed in the barrel 102 close to the first proximal end 204 and remains intact, and in free rotation. The fluid in the reservoir may be flushed out through an exit hole of the barrel 102 by pushing the plunger rod 108 and pulling the flat ring 104, as the piston 114 moves from the first proximal end 204 to the first distal end 206. The continuity of pushing is stopped by the plurality of stopper pulsing elements 110 associated with the plunger rod 108, and at this point certain volume of fluid from the chamber 202 is flushed out. Further advancement of the piston 114 towards the first distal end 206 may be performed by simultaneously rotating the plunger rod 108, and the flat ring 104, and pushing the plunger rod 108, while pulling the flat ring 104. This rotation moves the plurality of stopper pulsing elements 110 away from the pulsing element in each of at least two edges of the butterfly shaped aperture of the stopper ring 106, until the plunger rod 108 is stopped by opposite pulsing element in each of at least two edges of the butterfly shaped aperture of the stopper ring 106. Clockwise and anti-clockwise rotation with push and pull action is repeated for multiple flush until the piston 114 reaches the first distal end 206 of the barrel 102. The plurality of stopper pulsing elements 110 allows the barrel 102 to flush the liquid in multiple volumes.
[0047] FIG. 2C illustrates a cross-sectional view of a barrel 102, in accordance with some embodiments of present disclosure. For example, an inner diameter of the barrel 102 and a length matches the piston 114 and the plunger rod 108. The barrel 102 may be open at the first proximal end 204 and close at the first distal end 206 except a small opening that is exit hole. The exit hole allows the fluid to exit the barrel 102, when flushed by the piston 114 and the plunger rod 108. The piston 114 may be moved from the first proximal end 204 to a barrel end i.e., the first distal end 206.
[0048] The circular protrusion element 208 at the first proximal end 204 allows the flat ring 104 to slide over the barrel 102, and the circular protrusion element 208 until it reached the at least two finger grips 210. The groove 212 may be a step decrease in thickness of the at least two finger grips 210, which allows the locking notch of the stopper ring 106 to slide over a finger grip notch to form a firm lock with the syringe barrel 102. The barrel 102 may include more than one locking hole on the at least two finger grips 210, which allows locking notch to slide into the groove 212. This prevents the rotational movement of the stoper ring 106 on the at least two finger grips 210. The first distal end 206 of the barrel 102 may include two cylinders, which is an exit cylinder and a connecting cylinder shown in FIG. 2B. An inner diameter of the exit cylinder may allow the rubber or a plastic to slide into it for one-way liquid flow operation. An outer diameter of the exit cylinder may be matched with any syringe needles or Intravenous (IV) needles or Intravenous (IV) sets to provide airtight connection. The cylindrical gap between the exit cylinder and the connecting cylinder is connecting cylinder slot, which guides the syringe needles or IV needles or IV sets to slide over the exit cylinder. The locking element 216 of the connecting cylinder allows any needles or connectors to firmly hold it on to the exit cylinder. The locking element 216 may be any type of locking mechanism, but not limited to, thread, slot, notch, and the like. The locking element 216 is shown as an exemplary and may not be limited to shown locking element 216. The exit cylinder may include a grove that allows the fluid to exit the cylinder when the inner cylinder space is occupied by the rubber or plastic to provide one-way fluid flow.
[0049] The controlled flush syringe assembly 100 may also be used in other application where it requires to flush the fixed volume liquids in different intervals. For example, the controlled flush syringe assembly 100 may be used to draw the blood or any liquid or gas in fixed volume in different intervals. The controlled flush syringe assembly 100 may also be prefilled with gases for controlled flush.
[0050] FIG. 3 illustrates a front view of a plunger rod 108, in accordance with some embodiments of present disclosure. In an embodiment, the plunger rod 108 may be slidably disposed within the chamber 202 of the barrel 102 through the butterfly shaped aperture of the stopper ring 106. The plunger rod 108 may include a second distal end 310, a second proximal end 302, and a cruciform shaped plunger rod body 306 extending from the second distal end 310 to the second proximal end 302. In an embodiment, the plunger rod 108 may include a plurality of stopper pulsing elements 110 criss-crossed from the second distal end 310 to the second proximal end 302 on at least two opposite walls of the cruciform shaped plunger rod body 306. The criss-crossed is with respect to side walls 308 of each of the opposite walls of the plunger rod 108. Further, the plunger rod 108 may include a finger grip 112 in a radial shape coupled to the second proximal end 302.
[0051] In an embodiment, the plunger rod 108 may be configured to provide a plurality of controlled flush of the fluid in the chamber 202, by a controlled contact of the pulsing element in the stopper ring 106 with the plurality of stopper pulsing elements 110. The controlled contact is based on alternate rotation, for each flush, of the plunger rod 108, for a pre-defined distance, against the barrel 102. The alternate rotation of the plunger rod 108 corresponds to clockwise rotation and anti-clockwise rotation, for each flush. The alternate rotation of the plunger rod 108 may be to provide the plurality of controlled flush of the fluid. The flat ring 104, and the finger grip 112 coupled to the plunger rod 108 may provide resistance between the finger grip 112 coupled to the plunger rod 108 and the fingers of the user at the flat ring 104, when there is a simultaneous alternate rotation of the plunger rod 108 by the user. In an embodiment, the plunger rod 108 may include a piston 114 coupled to a piston holder 312 disposed at the second distal end 310 of the plunger rod 108 to form a fluid-tight seal with the inside surface of the barrel 102.
[0052] In an embodiment, the plunger rod 108, in a first position, with the plurality of stopper pulsing elements 110 may engage the pulsing element in the stopper ring 106, to provide an engagement force that resists distally directed force applied to the plunger rod 108. Further, in a second position, upon rotation of the plunger rod 108 to prevent the plurality of stopper pulsing elements 110 from engaging with the pulsing element in the stopper ring 106, there is continuous movement of the plunger rod 108 within the chamber 202 of barrel 102 in the distal direction, until the criss-crossed plurality of stopper pulsing elements 110 engages with the pulsing element of the stopper ring 106.
[0053] In an embodiment, the criss-crossed plurality of stopper pulsing elements 110 may be separated by a pre-defined distance from the second distal end 310 to the second proximal end 302 on each of side walls 308 of the cruciform shaped plunger rod body 306. The criss-crossed plurality of stopper pulsing elements 110 may appear in a criss-crossed form. The criss-crossed stopper pulsing elements 110 includes a left diagonal stopper pulsing elements 304B which is restricted by the left notch edge of the stoper ring 106, when the cruciform shaped plunger rod body 306 is sliding along with left notch edge of the stoper ring 106. The criss-crossed stopper pulsing elements 110 includes a right diagonal stopper pulsing elements 304A which is restricted by the right notch edge of the stoper ring 106, when the cruciform shaped plunger rod body 306 is sliding along with right notch edge of the stoper ring 106.
[0054] For example, the plunger rod 108 may include right diagonal stopper pulsing elements 304A and left diagonal stopper pulsing elements 304B from the second proximal end 302 to the second distal end 310 of the plunger rod 108. The right diagonal stopper pulsing elements 304A and the left diagonal stopper pulsing elements 304B are separated by small distance along the axis of the plunger rod 108. When seen from one side of the plunger rod 108, the right diagonal stopper pulsing elements 304A and the left diagonal stopper pulsing elements 304B appears alternatively left and right side of the plunger rod 108.
[0055] FIG. 4A illustrates a top view and a side view of a stopper ring 106, in accordance with some embodiments of present disclosure. In an embodiment, the stopper ring 106 may include a butterfly shaped aperture 118 and a pulsing element 404 in each of at least two edges 406 of the butterfly shaped aperture 118. The stopper ring 106 may include at least two grooves 408 and a locking notch 410 associated with each of the at least two grooves 408. The stopper ring 106 may include a discontinued slot 120.
[0056] In an embodiment, the plunger rod 108 may be slidably disposed within the chamber 202 of the barrel 102 through the butterfly shaped aperture 118 of the stopper ring 106. In an embodiment, the plunger rod 108 may be configured to provide a plurality of controlled flush of the fluid in the chamber 202, by a controlled contact of the pulsing element 404 in the stopper ring 106 with the plurality of stopper pulsing elements 110.
[0057] In an embodiment, the discontinued slot 120 may be configured for at least one of an increasing diameter and decreasing the diameter of the stopper ring 106 in a spiral direction. The stopper ring 106 may be radially displaced at the discontinued slot 120 for the plunger rod 108 to slide into the stopper ring 106. The diameter of the stopper ring 106 may be smaller than the diameter of the plunger rod 108. In an embodiment, the plunger rod 108 may be slidably disposed within the chamber 202 of the barrel 102 through the butterfly shaped aperture 118 of the stopper ring 106. In an embodiment, the stopper ring 106 includes at least two stopper slots 412 configured for aligning the cruciform shaped plunger rod body 306 during flushing of the fluid. The at least two stopper slots 412 may allow each of the criss-crossed stopper pulsing elements 110 at a time.
[0058] For example, the stoper ring 106 may include a left notch edge and a right notch edge such as the least two stopper slots 412, which provide a block for the criss-crossed stopper pulsing elements 110. The left diagonal stopper pulsing elements 304B is restricted by the left notch edge when the plunger rod 108 is sliding along with the left notch edge. The right diagonal stopper pulsing elements 304A is restricted by the right notch edge when the plunger rod 108 is sliding along with the right notch edge.
[0059] FIG. 4B illustrates a rear view of a flat ring 104, in accordance with some embodiments of present disclosure. In an embodiment, the flat ring 104 may free-rotatably be coupled to the first proximal end 204 of the barrel 102. The flat ring 104 may be rotatably coupled between the circular protrusion element 208 and the at least two finger grips 210 of the barrel 102. The flat ring 104 includes a plurality of radial grips 116, for providing grip to fingers of a user.
[0060] The flat ring 104, and the finger grip 112 coupled to the plunger rod 108 may provide resistance between the finger grip 112 coupled to the plunger rod 108 and the fingers of the user at the flat ring 104, when there is a simultaneous alternate rotation of the plunger rod 108 by the user. The flat ring 104 may include a flat ring aperture 422 for inserting the barrel 102 into the flat ring 104 towards the proximal direction the barrel 102.
[0061] FIG. 5 illustrates a side view of a piston 114, in accordance with some embodiments of present disclosure. In an embodiment, the plunger rod 108 may include the piston 114 disposed at the second distal end 310 of the plunger rod 108 to form a fluid-tight seal with the inside surface of the barrel 102. The piston 114 may be slidably placed on the piston holder 312 and a piston neck 502 may be coupled to the piston holder 312.
[0062] A description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the invention. When a single device or article is described herein, it will be apparent that more than one device/article (whether they cooperate) may be used in place of a single device/article. Similarly, where more than one device or article is described herein (whether or not they cooperate), it will be apparent that a single device/article may be used in place of the more than one device or article or a different number of devices/articles may be used instead of the shown number of devices or programs. The functionality and/or the features of a device may be alternatively embodied by one or more other devices which are not explicitly described as having such functionality/features. Thus, other embodiments of the invention need not include the device itself.
[0063] The specification has described a controlled flush syringe assembly for controlled flushing of fluid. The illustrated steps are set out to explain the exemplary embodiments shown, and it should be anticipated that ongoing technological development will change the manner in which particular functions are performed. These examples are presented herein for purposes of illustration, and not limitation. Further, the boundaries of the functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternative boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed. Alternatives (including equivalents, extensions, variations, deviations, etc., of those described herein) will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein. Such alternatives fall within the scope and spirit of the disclosed embodiments. Also, the words "comprising," "having," "containing," and "including," and other similar forms are intended to be equivalent in meaning and be open-ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise.
[0064] Finally, the language used in the specification has been principally selected for readability and instructional purposes, and it may not have been selected to delineate or circumscribe the inventive subject matter. It is therefore intended that the scope of the invention be limited not by this detailed description, but rather by any claims that issue on an application based here on. Accordingly, the embodiments of the present invention are intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims. , Claims:CLAIMS
We claim:
1. A controlled flush syringe assembly (100) comprising:
a barrel (102) comprised of a side wall with an inside surface forming a chamber (202) for retaining fluid, an open first proximal end (204) and a first distal end (206), wherein the barrel (102) comprising:
at least two finger grips (210), at the first proximal end (204), protruding outwards from the side wall, wherein each of the at least two finger grips (210) comprise a groove (212); and
a circular protrusion element (208) at the first proximal end (204), under the at least two finger grips (210), and spaced with a pre-defined dimension in a distal direction;
a flat ring (104) free-rotatably coupled to the first proximal end (204) of the barrel (102), wherein the flat ring (104) is rotatably coupled between the circular protrusion element (208) and the at least two finger grips (210), wherein the flat ring (104) comprises a plurality of radial grips (116) for providing grip to fingers of a user;
a stopper ring (106) comprised of a butterfly shaped aperture (118) and a pulsing element in each of at least two edges of the butterfly shaped aperture (118), wherein the stopper ring (106) comprises at least two grooves and a locking notch associated with each of the at least two grooves, and wherein the stopper ring (106) comprises a discontinued slot (120); and
a plunger rod (108) slidably disposed within the chamber (202) of the barrel (102) through the butterfly shaped aperture (118) of the stopper ring (106), wherein the plunger rod (108) comprising:
a second distal end (310), a second proximal end (302), and a cruciform shaped plunger rod body (306) extending from the second distal end (310) to the second proximal end (302);
a plurality of stopper pulsing elements (110) criss-crossed from the second distal end (310) to the second proximal end (302) on at least two opposite walls of the cruciform shaped plunger rod body (306), wherein the criss-crossed is with respect to side walls (308) of each of the opposite walls; and
a finger grip (112) in a radial shape coupled to the second proximal end (302);
wherein the plunger rod (108) is configured to provide a plurality of controlled flush of the fluid in the chamber (202), by a controlled contact of the pulsing element in the stopper ring (106) with the plurality of stopper pulsing elements (110);
wherein the controlled contact is based on alternate rotation, for each flush, of the plunger rod (108), for a pre-defined distance, against the barrel (102), wherein the alternate rotation of the plunger rod (108) corresponds to clockwise rotation and anti-clockwise rotation, for each flush;
wherein the alternate rotation of the plunger rod (108) is to provide the plurality of controlled flush of the fluid; and
wherein the flat ring (104), and the finger grip (112) coupled to the plunger rod (108) provides resistance between the finger grip (112) coupled to the plunger rod (108) and the fingers of the user at the flat ring (104), when there is a simultaneous alternate rotation of the plunger rod (108) by the user.

2. The controlled flush syringe assembly (100) as claimed in claim 1, wherein the plunger rod (108) in a first position, with the plurality of stopper pulsing elements (110) engages the pulsing element to provide an engagement force that resists distally directed force applied to the plunger rod (108), and in a second position, upon rotation of the plunger rod (108) to prevent the plurality of stopper pulsing elements (110) from engaging with the pulsing element, there is continuous movement of the plunger rod (108) within the chamber (202) of barrel (102) in the distal direction, until the criss-crossed plurality of stopper pulsing elements (110) engages with the pulsing element.

3. The controlled flush syringe assembly (100) as claimed in claim 1, wherein the criss-crossed plurality of stopper pulsing elements (110) is separated by a pre-defined distance from the second distal end (310) to the second proximal end (302) on each of side walls (308) of the cruciform shaped plunger rod body (306), wherein the criss-crossed plurality of stopper pulsing elements (110) appears in a criss-crossed form.

4. The controlled flush syringe assembly (100) as claimed in claim 1, wherein the first distal end (206) of the barrel (102) comprises a distal wall (214) with a tip extending in distal direction, and wherein the distal wall (214) with a tip extending in distal direction comprises a locking element (216) to lock a needle for flushing the fluid.

5. The controlled flush syringe assembly (100) as claimed in claim 1, wherein the barrel (102) comprises a passageway (218) in fluid communication with the chamber (202).

6. The controlled flush syringe assembly (100) as claimed in claim 1, wherein each of the at least two finger grips (210) of the barrel (102) comprise a groove (220) for locking the stopper ring (106) through the locking notch associated with each of the at least two grooves of the stopper ring (106).

7. The controlled flush syringe assembly (100) as claimed in claim 1, wherein the stopper ring (106) comprises at least two stopper slots configured for aligning the cruciform shaped plunger rod body (306) during flushing of the fluid, and wherein the at least two stopper slots allow each of the criss-crossed stopper pulsing elements (110) at a time.

8. The controlled flush syringe assembly (100) as claimed in claim 6, wherein the at least two stopper slots comprises a left notch edge and a right notch edge to restrict the criss-crossed stopper pulsing elements (110), wherein the criss-crossed stopper pulsing elements (110) comprises a left diagonal stopper pulsing elements (304B) (110) which is restricted by the left notch edge, when the cruciform shaped plunger rod body (306) is sliding along with left notch edge, and wherein the criss-crossed stopper pulsing elements (110) comprises a right diagonal stopper pulsing elements (304A) (110) which is restricted by the right notch edge, when the cruciform shaped plunger rod body (306) is sliding along with right notch edge.

9. The controlled flush syringe assembly (100) as claimed in claim 1, wherein the discontinued slot (120) is configured for at least one of an increasing diameter and decreasing the diameter of the stopper ring (106) in spiral direction, wherein the stopper ring (106) is radially displaced at the discontinued slot (120) for the plunger rod (108) to slide into the stopper ring (106), wherein the diameter of the stopper ring (106) is smaller than the diameter of the plunger rod (108).

10. The controlled flush syringe assembly (100) as claimed in claim 1, wherein the plunger rod (108) comprises a piston (114) disposed at the second distal end (310) of the plunger rod (108) to form a fluid-tight seal with the inside surface of the barrel (102).