CN115349918A

CN115349918A - Pin-free nucleus pulposus clamp capable of being used in minimally invasive spine surgery

Info

Publication number: CN115349918A
Application number: CN202211082320.7A
Authority: CN
Inventors: 吴其明; 薛科峰; 杨君
Original assignee: Changzhou Rongchuang Medical Device Technology Co ltd
Current assignee: Changzhou Rongchuang Medical Device Technology Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2022-11-18

Abstract

The invention provides a pair of pin-free nucleus pulposus forceps capable of being used in a minimally invasive spine surgery, which comprises forceps handles and forceps bodies, wherein each forceps handle comprises a movable forceps handle and a fixed forceps handle; through the structural design that bite mouthful department does not have the pin, can avoid causing the bite to drop because of the pin deformation fracture when the great nucleus pulposus of centre gripping, prevent to avoid the unexpected condition to take place to produce the influence to the operation.

Description

Pin-free nucleus pulposus clamp capable of being used in minimally invasive spine surgery

Technical Field

The invention mainly relates to the technical field of nucleus pulposus pincers, in particular to a pin-free nucleus pulposus pincers which can be used in a spine minimally invasive surgery.

Background

The doctor can use nucleus pulposus pincers to grab nucleus pulposus and soft tissue in spine minimally invasive surgery, and the current market uses two-flap seaming by a pin. However, when a larger nucleus is to be captured, the pins are easily deformed and broken, which may cause the bite to break, thereby increasing the complexity and difficulty of the procedure.

Disclosure of Invention

In order to solve the problem that the operation is affected because the pins of the nucleus pulposus pincers are easy to deform and break in the minimally invasive spine surgery, so that the bite is separated, the invention provides the non-pin nucleus pulposus pincers which can be used in the minimally invasive spine surgery.

The following technical scheme is adopted: the clamp comprises a clamp handle and a clamp body, wherein the clamp handle comprises a movable clamp handle and a fixed clamp handle, the movable clamp handle is rotatably connected with the fixed clamp handle, the clamp body is connected with the fixed clamp handle, the movable clamp handle is movably connected with a pull rod, the clamp body is connected with a fixed tooth, the fixed tooth is movably connected with a movable tooth without a pin, and the movable tooth is movably connected with the pull rod without a pin; the movable teeth and the fixed teeth form a bite of the nucleus pulposus forceps;

a fixed rod is arranged at one end, close to the pliers body, of the fixed tooth, the fixed tooth is fixedly connected with the pliers body through the fixed rod, a through groove is formed in the fixed tooth in a vertically penetrating mode, fixed bosses are symmetrically arranged on the inner walls of the two sides of the through groove, a movable rod is movably connected to one end, far away from the movable pliers handle, of the pull rod, the movable rod and movable teeth are integrally formed, movable tooth grooves are symmetrically formed in the outer walls of the two sides of the movable rod, and the symmetrical fixed bosses are matched with the movable tooth grooves; the fixed boss, the movable tooth groove, the pull rod groove and the pull rod boss are all arc-shaped.

Through above-mentioned structural design, can realize stinging fixed tooth and the movable tooth of mouthful department and do not have pin joint, pull rod and movable tooth do not have pin joint, avoid causing the bite to drop because of the pin deformation fracture when the great nucleus pulposus of centre gripping, further avoid the unexpected condition to take place to exert an influence to the operation.

The pull rod is located in the caliper body and is movably connected with the caliper body to prevent the pull rod from falling off.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, through the structural design that no pin is arranged at the bite part, the bite part can be prevented from falling off due to the deformation and fracture of the pin when clamping the larger nucleus pulposus, and the influence on the operation caused by an accident situation is further avoided.

The present invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not intended to be to scale, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the mouthpiece structure of the present invention;

fig. 3 is an enlarged schematic view of the invention at a.

In the figure: 1. a movable tooth; 11. a movable tooth groove; 12. a movable rod; 2. fixing teeth; 21. fixing the rod; 22. fixing the boss; 3. a pull rod; 31. limiting teeth; 32. a pull rod boss; 4. a movable clamp handle; 41. a limiting groove; 5. fixing the clamp handle; 51. a clamp body.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration, various embodiments of the invention which may be practiced in different forms and not limited to the embodiments described herein, but on the contrary, the embodiments are provided so as to provide a more thorough and complete disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the terms herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to be limiting of the invention, and the use of the term "and/or" herein includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1 heavily, which includes a forceps handle and a forceps body 51, wherein the forceps handle includes a movable forceps handle 4 and a fixed forceps handle 5, the movable forceps handle 4 is rotatably connected with the fixed forceps handle 5, the forceps body 51 is connected with the fixed forceps handle 5, the movable forceps handle 4 is movably connected with a pull rod 3, the forceps body 51 is connected with a fixed tooth 2, the fixed tooth 2 is movably connected with a movable tooth 1 without a pin, the movable tooth 1 is movably connected with the pull rod 3 without a pin, and the movable tooth 1 and the fixed tooth 2 of the bite are connected without a pin, so as to prevent the pin from deforming and breaking when the large nucleus pulposus is grabbed, and avoid the bite from falling off.

Please refer to fig. 1-2, a fixed rod 21 is disposed at one end of the fixed gear 2 close to the caliper body 51, the fixed gear 2 is fixedly connected to the caliper body 51 through the fixed rod 21, a through groove is disposed through the fixed rod 21, fixed bosses 22 are symmetrically disposed on inner walls of two sides of the through groove, a movable rod 12 is movably connected to one end of the pull rod 3 away from the movable caliper handle 4, the movable rod 12 and the movable teeth 1 are integrally formed, movable teeth grooves 11 are symmetrically disposed on outer walls of two sides of the movable rod 12, the fixed bosses 22 are engaged with the movable teeth grooves 11 symmetrically, a pull rod groove 13 is disposed in the movable rod 12, a pull rod boss 32 engaged with the pull rod groove 13 is disposed at a front end of the pull rod 3, the fixed boss 21, the movable teeth grooves 11, the pull rod groove 13 and the pull rod boss 32 are all arc-shaped, the movable teeth grooves 11 and the pull rod boss 32 have the same radius, the arc-shaped boss 21 and the pull rod boss 32 are inserted into the arc-shaped groove, the movable rod boss 32 is driven by pushing the pull rod 3 to move forward in the arc-shaped groove 13, the movable rod boss 12 rotates counterclockwise, and the movable rod boss 12 rotates counterclockwise.

Please refer to fig. 3 again, the rear end of the pull rod 3 is provided with a limiting tooth 31, the movable clamp handle 4 is provided with a limiting groove 41, the limiting tooth 31 is clamped in the limiting groove 41, and the pull rod 3 is driven to move back and forth by the rotation of the movable clamp handle 4.

Referring to fig. 1 again, the pull rod 3 is located inside the caliper body 51 and is movably connected to the caliper body.

It should be noted that the movable teeth and the fixed teeth of the bite can be in various shapes: for example, the movable teeth and the fixed teeth of the bite are provided with the mutually meshed insections, so that the friction force can be increased, and the clamping is more stable compared with the smooth clamping surface; the movable teeth and the fixed teeth are in a semicircular bowl shape, so that the biting opening has stronger wrapping property; the front ends of the movable teeth and the fixed teeth are in an upwarping shape.

The embodiment is as follows:

when the nucleus pulposus clamp is used, a finger pushes the movable clamp handle 4 to be far away from the fixed clamp handle 5, the limiting groove 41 of the movable clamp handle 4 rotates clockwise, the limiting tooth 31 at the rear end of the pull rod 3 is pushed to be driven by the convex tooth at the edge of the limiting groove 41 to move backwards, the limiting tooth 31 drives the pull rod 3 to move backwards, the pull rod 3 is pulled to drive the pull rod boss 32 at the front end of the pull rod 3 to move backwards in the arc pull rod groove 13 in the movable rod 12, the pull rod groove 13 is matched with the pull rod boss 32, the movable rod 12 is forced to rotate clockwise, the arc movable tooth grooves 11 at the two sides of the movable rod 12 rotate clockwise along the arc fixed boss 22, so that the movable tooth 1 is driven to rotate clockwise, nucleus pulposus or soft tissue needing to be clamped is aligned, the movable clamp is pulled by the finger, the movable clamp handle 4 is close to the fixed clamp handle 5, the limiting groove 41 of the movable clamp handle 4 rotates anticlockwise, the limiting tooth 31 at the rear end of the pull rod 3 is pushed to move forwards, the pull rod 3 drives the pull rod boss 32 to move forwards, the pull rod boss 32 in the arc movable rod groove 13 in the movable rod 12, the arc movable rod groove 13 and the movable rod groove 13 can rotate anticlockwise, the pull rod boss 11 can rotate anticlockwise, and the movable rod can clamp the movable rod boss 2, and the movable rod can clamp the soft tissue on the movable rod.

The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without such modifications.

Claims

1. The utility model provides a no pin nucleus pulposus pincers that can be used to among backbone minimal access surgery, includes pincers handle and pincers body (51), its characterized in that: the clamp handle includes activity clamp handle (4) and fixed clamp handle (5), activity clamp handle (4) rotate to be connected on fixed clamp handle (5), pincers body (51) are connected with fixed clamp handle (5), activity clamp handle (4) swing joint has pull rod (3), pincers body (51) are connected with fixed tooth (2), fixed tooth (2) do not have pin swing joint have movable tooth (1), movable tooth (1) do not have pin swing joint with pull rod (3).

2. The pinless nucleus pulposus clamp used in minimally invasive spine surgery of claim 1, wherein: the one end that fixed tooth (2) are close to pincers body (51) is equipped with dead lever (21), fixed tooth (2) are through dead lever (21) and pincers body (51) fixed connection, dead lever (21) run through from top to bottom and are equipped with logical groove, it is equipped with fixed boss (22) to lead to groove both sides inner wall symmetry, the one end swing joint that activity pincers handle (4) were kept away from in pull rod (3) has movable rod (12), movable rod (12) and activity tooth (1) integrated into one piece, movable rod (12) both sides outer wall symmetry is equipped with movable tooth recess (11), the symmetry fixed boss (22) agree with mutually with movable tooth recess (11).

3. The pinless nucleus pulposus clamp used in minimally invasive spine surgery of claim 1, wherein: a pull rod groove (13) is formed in the movable rod (12), and a pull rod boss (32) matched with the pull rod groove (13) is arranged at the front end of the pull rod (3).

4. The pinless nucleus pulposus clamp used in minimally invasive spine surgery of claim 1, wherein: the rear end of the pull rod (3) is provided with a limiting tooth (31), the movable clamp handle (4) is provided with a limiting groove (41), and the limiting tooth (31) is clamped into the limiting groove (41).

5. The pin-less nucleus pulposus clamp used in minimally invasive spine surgery according to claim 2, wherein: the fixed boss (21), the movable tooth groove (11), the pull rod groove (13) and the pull rod boss (32) are all arc-shaped.

6. The pinless nucleus pulposus clamp used in minimally invasive spine surgery of claim 2, wherein: the radius of the movable tooth groove (11) is consistent with that of the pull rod groove (13).

7. The pinless nucleus pulposus clamp used in minimally invasive spine surgery of claim 1, wherein: the fixed boss (21) and the pull rod boss (32) are consistent in radius.

8. The pin-less nucleus pulposus clamp used in minimally invasive spine surgery according to claim 1, wherein: the pull rod (3) is positioned in the forceps body (51) and is movably connected with the forceps body.