Puncture separation combination needle forceps

Abstract

The application discloses a puncture and separation combined needle forceps, which is characterized in that the forceps comprises a forceps handle and a forceps rod, an adjusting wheel is arranged at a position close to the forceps handle of the forceps rod, and adjusting wheel teeth are arranged at a position inside the forceps rod; a tail end of a puncture needle rod is engaged with the adjusting wheel teeth, and a head end is arranged in a forceps head which is composed of a sleeve body and arranged at a port of the forceps rod; the forceps head further comprises a forceps jaw, the forceps jaw is hingedly connected to a sleeve sleeve along a hinged point, and a push-pull rod is connected to a movable forceps handle arranged on the forceps handle at the tail end of the forceps rod. The puncture needle is retracted in the forceps head of the separation forceps, and the extension and retraction of the puncture needle and the separation forceps can be switched only by rotating the adjusting wheel, the structure is ingenious, and the puncture needle does not need to be taken out and replaced in the use process, so that the puncture and separation combined needle forceps are convenient to use and high in efficiency.

Description

Technical Field

[0001] This invention relates to medical surgical equipment, specifically to a puncture and separation compound needle forceps. Background Technology

[0002] Puncture needles and dissecting forceps are two commonly used medical instruments. Puncture needles can be used to puncture organs or tissues or to inject drugs, while dissecting forceps are usually used in conjunction with a laparoscope for various laparoscopic surgeries.

[0003] Of course, puncture needles are sometimes used during laparoscopic surgery. They can be used to make punctures before opening the abdomen or to insert organs or tissues into the abdominal cavity during the operation. Therefore, puncture needles and dissecting forceps are used together frequently, but changing them during the operation is quite troublesome. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problem of inconvenience and troublesome use when using puncture needles and dissecting forceps in existing surgical procedures, and to provide a puncture and dissecting compound needle forceps that combines and cleverly switches between puncture needles and dissecting forceps.

[0005] A puncture and separation compound needle forceps, characterized in that: it includes a handle and a bar; an adjusting wheel is provided on the part of the bar near the handle, and the adjusting wheel is provided with adjusting wheel teeth on the inner side of the bar; the tail end of a puncture needle bar engages with the adjusting wheel teeth, and the head end is built into a head of a sleeve located at the end of the bar; the head of the forceps also includes jaws, the tail end of which is hinged to the edge of the sleeve, and is connected to a movable handle installed on the handle at the end of the bar by a push-pull rod through the hinge point.

[0006] The movable clamp handle is connected to the push-pull rod by an arc-shaped push plate that passes around the adjusting wheel. The arc-shaped push plate has locking pins on both sides, and corresponding locking pins have limiting grooves on the inner side of the clamp bar and the clamp handle.

[0007] The end of the arc-shaped push plate connected to the push-pull rod is a foot with a limiting mechanism. After part of the push-pull rod passes through the limiting mechanism, it is pulled by the end of the foot.

[0008] The movable clamp is provided with a groove, and one end of the arc-shaped push plate is provided with a slider. The slider is locked in the groove and is driven by the movable clamp to pull the push-pull rod.

[0009] The arc-shaped push plate is also provided with a locking screw hole, and a locking bolt passes through the locking screw hole and is fixed to the push-pull rod.

[0010] At least one push-pull rod has a cross-section that matches the arc shape that forms a gap between the puncture needle rod and the clamp rod, and a retraction thread is provided on its inner surface; the puncture needle rod is provided with a retraction thread that matches the retraction thread provided on the inner surface of the push-pull rod.

[0011] The puncture needle is also provided with a flexible tube connected to the needle cavity at its tail end, and the end of the flexible tube is output through a flexible tube hole provided at the handle support of the clamp.

[0012] A return spring is provided between the fixed clamp handle and the movable clamp handle, and a matching buckle is also provided between the fixed clamp handle and the movable clamp handle respectively.

[0013] A puncture and separation compound needle forceps, characterized in that: it includes a handle and a bar; an adjusting wheel is provided on the part of the bar near the handle, and the adjusting wheel is provided with adjusting wheel teeth on the inner side of the bar; the tail end of a puncture needle bar engages with the adjusting wheel teeth, and the head end is built into a head composed of a sleeve located at the end of the bar; the head is a jaw extending outward from a push-pull rod, and the other end of the push-pull rod is connected to a movable handle installed on the handle.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention retracts the puncture needle into the head of the dissecting forceps. The extension and retraction of the puncture needle and dissecting forceps can be switched simply by rotating the adjusting wheel. The structure is ingenious and does not need to be removed and replaced during use, making it convenient and efficient. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 yes Figure 1 Another angle of structural diagram Figure 1 ;

[0019] Figure 3 yes Figure 1 Another angle of structural diagram Figure 2 ;

[0020] Figure 4 This is a schematic cross-sectional view of the present invention. Figure 1 ;

[0021] Figure 5 This is a schematic cross-sectional view of the present invention. Figure 2 ;

[0022] Figure 6 This is a structural schematic diagram of some parts inside the present invention;

[0023] Figure 7 This is an exploded view of the structure of the present invention;

[0024] Figure 8 This is a schematic diagram showing the appearance of the present invention when the puncture needle extends and the separation forceps retract during use. Detailed Implementation

[0025] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, that is, to provide numerous specific details in order to offer a more thorough understanding of the present invention. However, those skilled in the art will recognize that the present invention can be practiced without one or more of these details. In these examples, to avoid confusion with the present invention, some technical features well-known in the art have not been described.

[0026] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. Therefore, these are merely examples and should not be used to limit the scope of protection of the present invention.

[0027] Additionally, it should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0028] See Figures 1 to 3 A puncture and separation compound needle forceps includes a handle 1 and a bar 2. The handle 1 includes a fixed handle 15 and a movable handle 11. An adjusting wheel 3 is provided on the bar 2 near the handle 1, and the adjusting wheel 3 has adjusting teeth 31 on the inner side of the bar 2. The tail end 41 of a puncture needle 4 engages with the adjusting teeth 31, and the head end 42 is housed in a head 5 composed of a sleeve 51 located at the port 21 of the bar 2. The head 5 also includes jaws 52, the tail end of which is hinged to the sleeve edge 53 of the sleeve 51, and connected to the movable handle 11 installed on the handle 1 at the end of the bar 2 via a push-pull rod 54 through the hinge point. The jaws 52 also have notches, which match the puncture needle 4 bar so that the puncture needle 4 bar can pass through the notches when the jaws 52 are closed.

[0029] When the tail end of the jaw 52 is hinged to the sleeve edge 53 of the sleeve body 51, a spring is provided on the sleeve edge 53, which causes the jaw 52 to extend to both sides of the sleeve body 51. One end of the spring is located on the sleeve edge 53, and the other end is fixed to the outer wall of the jaw 52. Considering volume design, the outer wall of the jaw 52 used to fix the spring can be a groove provided on the outer wall of the jaw 52.

[0030] In practice, the present invention is as follows:

[0031] Normally, the puncture and separation needle forceps are displayed in the separation forceps state. When used in this state, the fingers passing through the fixed forceps handle 15 and the movable forceps handle 11 forcefully push the movable forceps handle 11 towards the fixed forceps handle 15. The movable forceps handle 11 drives the push-pull rod 54 to retract inward into the forceps bar 2. Due to the presence of the port 21 of the forceps bar 2, the jaws 52 are forced to close to complete the biting action. When the movable forceps handle 11 is released, it usually returns to its original position. At the same time as returning to its original position, the movable forceps handle 11 pushes the push-pull rod 54 to extend outward from the port 21 of the forceps bar 2. Under the action of the spring hinged to the jaws 52, the jaws 52 unfold again, completing the release action.

[0032] In some designs, the movable jaw 11 needs to be manually reset. In this case, the user needs to first release the force previously applied to the movable jaw 11, and then use the fingers passing through the fixed jaw 15 and the movable jaw 11 to unfold the movable jaw 11 away from the fixed jaw 15. This will cause the push-pull rod 54 connected to the movable jaw 11 to extend outward from the port 21 of the jaw bar 2, thereby unfolding the jaws 52 and completing the loosening action.

[0033] When the separation forceps are switched to the puncture needle state, in this invention, the tail end 41 of the puncture needle 4 is engaged with the adjusting gear 31, and the outer ring of the adjusting gear 31 is located at the part of the forceps bar 2 near the forceps handle 1. Therefore, by manually adjusting the adjusting gear 31, the puncture needle 4 can be extended out of the port 21 of the forceps bar 2. During this process, the forceps claw 52 needs to be retracted and closed.

[0034] Alternatively, the jaws 52 can be retracted into the port 21 later through a corresponding mechanism. For example, the part of the push-pull rod 54 connected to the movable jaw 11 may have an extension protruding from the handle 1. The push-pull rod 54 can be pulled directly into the port 21 through this extension. The part connected to the movable jaw 11 may have a notch that engages with the end of the movable jaw 11. Multiple notches may be provided so that when pulled out through the extension, the end of the movable jaw 11 can disengage from the first notch. After the jaw head 5 is pulled into the port 21, the corresponding notch is then fitted into the end of the movable jaw 11 to fix the push-pull rod 54 during the use of the puncture and separation compound needle forceps.

[0035] Furthermore, as an improvement to the present invention, the movable clamp handle 11 and the push-pull rod 54 are connected by an arc-shaped push plate 6 that passes around the adjusting wheel 3. The arc-shaped push plate 6 has locking posts (not shown in the figure) on both sides, and corresponding locking posts (not shown in the figure) have limiting grooves (not shown in the figure) on the inner side of the clamp rod 2 and the clamp handle 1.

[0036] In this invention, the appearance of the arc-shaped pusher 6 frees up the number of rotations of the adjusting wheel 3, and correspondingly, the length of the puncture needle 4 that is engaged with the internal adjusting wheel teeth 31 can be extended to a longer length, which can adapt to different surgical needs.

[0037] Furthermore, as an improvement to the present invention, one end of the arc-shaped push plate 6 connected to the push-pull rod 54 is a plate foot 61 with a limiting mechanism A, and part of the rod body 55 of the push-pull rod 54 is pulled by the end 62 of the plate foot 61 after passing through the limiting mechanism A.

[0038] In this invention, the limiting mechanism A is a notch that limits the lateral width of the push-pull rod 54, preventing the push rod from rotating within the cavity of the clamp rod 2. The limiting mechanism A is configured with a reverse-biased push-pull rod 54, so that when the movable clamp handle 11 closes, the arc-shaped push plate 6 pulls the push-pull rod 54 towards the inside of the clamp rod 2 port 21, causing the clamp claws 52 to engage.

[0039] Furthermore, as an improvement to the present invention, a groove 12 is provided on the movable clamp 11, and a slider 63 is provided at one end of the arc-shaped push plate 6. The slider 63 is locked in the groove 12 and is driven by the movable clamp 11 to pull the push-pull rod 54.

[0040] In this invention, since the arc-shaped pusher 6 can only move back and forth in the direction of the clamp bar, the sliding groove 12 can make the arc-shaped pusher 6 form a backward limited track movement when the movable clamp 11 closes to the fixed clamp 15.

[0041] Furthermore, as an improvement to the present invention, a locking screw hole (not shown in the figure) is provided on the arc-shaped push plate 6, and a locking bolt 7 passes through the locking screw hole and is fixed on the push-pull rod.

[0042] The locking bolt 7 is provided to solve the problem that the push-pull rod 54 cannot be pulled out when the movable clamp 11 is movably connected with the arc-shaped push plate 6 and the arc-shaped push plate 6 is pushed out in the direction of port 21.

[0043] Based on the locking bolt 7, after part of the rod 55 of the push-pull rod 54 passes through the limiting mechanism A, it is pulled by the end 62 of the foot 61, causing the jaw 52 to retract. Then, the locking bolt 7 is tightened into the outer surface of part of the rod 55 of the push-pull rod 54, so that when the arc-shaped push plate 6 is pushed out, the push-pull rod 54 can be pushed to extend outward of the port 21.

[0044] Furthermore, as an improvement to the present invention, at least one push-pull rod 54 has an arc-shaped cross-section that matches the gap space formed between the puncture needle 4 rod and the clamp rod, and a reduced thread 55 is provided on the inner surface; the puncture needle 4 rod is provided with a retraction thread 43 that matches the reduced thread 55 provided on the inner surface of the push-pull rod 54.

[0045] In practice, two push-pull rods 54 are symmetrically arranged on both sides of the puncture needle, which can play a certain role in stability. Of course, three can also be used, which will result in better transmission of the pushing and pulling power of the push-pull rods 54.

[0046] Because the push-pull rod 54 is fixed and cannot rotate by the arc-shaped push plate 6, when the puncture needle 4 extends, the retraction thread 43 begins to contact the reduction thread 55 on the inner surface of the push-pull rod 54. Under the force of the puncture needle 4 extending further, the retraction thread 43 causes the push-pull rod 54 to retract inward towards the clamp 2. Thus, only the puncture needle 4 is exposed at the port 21 of the clamp 2. That is, an adjusting wheel 3 can achieve the simultaneous extension of the puncture needle 4 and retraction of the push-pull rod 54.

[0047] Furthermore, as an improvement to the present invention, the tail end of the puncture needle 4 is also provided with a flexible tube 44 connected to the needle cavity, and the end of the flexible tube 44 is output through the flexible tube hole 14 provided at the handle support 13 of the clamp 1.

[0048] Typically, the end of the puncture needle 4 is provided with a site for the needle to puncture organs or tissues or for injecting drugs, so that the tubing 44 can be connected to devices such as syringes.

[0049] Furthermore, as an improvement to the present invention, a return spring 16 is provided between the fixed clamp handle 15 and the movable clamp handle 11, and mutually matching buckles 17 are also provided between the fixed clamp handle 15 and the movable clamp handle 11.

[0050] During implementation, the latch 17 secures the movable clamp handle 11 to the fixed clamp handle 15. This frees the fingers from applying force to the movable clamp handle 11 and the fixed clamp handle 15.

[0051] Furthermore, based on the same idea, another embodiment of the present invention is made, which includes:

[0052] The puncture and separation compound needle forceps includes a handle 1 and a bar 2. The handle 1 includes a fixed handle 15 and a movable handle 11. The bar 2 is provided with an adjusting wheel 3 near the handle, and the adjusting wheel 3 is provided with adjusting wheel teeth 31 on the inner side of the bar. The tail end 41 of a puncture needle 4 engages with the adjusting wheel teeth 31, and the head end 42 is built into a head 5 located at the port 21 of the bar 2, which is composed of a sleeve 51. The head 5 is a jaw 52 extending outward from a push-pull rod 54, and the other end of the push-pull rod 54 is connected to the movable handle 11 installed on the handle 1.

[0053] The clamp head 5 and the push-pull rod 54 are integrated, and the clamp claws 52 are elastic claws that bend outwards. When the push-pull rod 54 retracts, the claws retract inwards under the action of the port 21 and are easily put into the port 21. When the push-pull rod 54 extends, the claws unfold again without the action of external force.

[0054] When the puncture needle 4 extends, it can squeeze between the two claw plates. Alternatively, a notch can be provided on the claw plates so that the puncture needle 4 can pass through when the claw plates retract.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A double-needle forceps for puncture and separation, characterized in that: The device includes a handle and a shaft. An adjusting wheel is located near the handle on the shaft, and adjusting gears are located on the inner side of the shaft. The tail end of a puncture needle shaft engages with the adjusting gears, and its head is housed within a clamp head, which is formed by a sleeve and located at the shaft end. The clamp head also includes jaws, the tail end of which is hinged to the edge of the sleeve and connected via a push-pull rod to a movable handle mounted on the handle at the end of the shaft. The movable handle and the push-pull rod are connected by an arc-shaped push plate that bypasses the adjusting wheel. The arc-shaped push plate has locking pins on both sides, and corresponding locking pins have limiting grooves on the inner sides of the shaft and handle. The arc-shaped push plate is connected to the push-pull rod by a... The end is a foot with a limiting mechanism. After part of the push-pull rod passes through the limiting mechanism, it is pulled by the end of the foot. A groove is provided on the movable clamp handle. A slider is provided at one end of the arc-shaped push plate. The slider is locked in the groove and is driven by the movable clamp handle to pull the push-pull rod. A locking screw hole is also provided on the arc-shaped push plate. A locking bolt passes through the locking screw hole and is fixed to the push-pull rod. There is at least one push-pull rod. The cross-section of the rod is arc-shaped to match the gap space formed between the puncture needle rod and the clamp rod. A reduction thread is provided on the inner surface. A retraction thread is provided on the puncture needle rod that matches the reduction thread on the inner surface of the push-pull rod.

2. The puncture and separation compound needle forceps according to claim 1, characterized in that: The puncture needle is also provided with a flexible tube connected to the needle cavity at its tail end, and the end of the flexible tube is output through a flexible tube hole provided at the handle support of the clamp.

3. The puncture and separation compound needle forceps according to claim 1, characterized in that: A return spring is provided between the fixed clamp handle and the movable clamp handle, and a matching buckle is also provided between the fixed clamp handle and the movable clamp handle respectively.

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