CN219397525U

CN219397525U - Ligament repair instrument

Info

Publication number: CN219397525U
Application number: CN202223176606.XU
Authority: CN
Inventors: 方晶华; 戴雪松; 潘宗友; 朱苏南; 宋红云; 余新宁; 徐腾靖; 王佳杰; 徐凯望
Original assignee: Second Affiliated Hospital Zhejiang University College Of Medicine
Current assignee: Second Affiliated Hospital Zhejiang University College Of Medicine
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-07-25
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to the technical field of medical equipment, in particular to a ligament repair device, which comprises a fixing frame, wherein a Kirschner wire guide sleeve is detachably arranged in the fixing frame, and the side surface of the fixing frame is fixedly connected with a mounting frame, and is characterized in that: two groups of guide holes are formed in the Kirschner wire sleeve, and Kirschner wires are respectively arranged in the two groups of guide holes; the sliding groove is formed in the mounting frame, the movable seat is arranged in the sliding groove in an adapting mode, the positioner is detachably arranged at the end part of the movable seat, the front end face of the positioner is integrally formed with a top hook, two groups of positioning holes are formed in the top hook and correspond to the two groups of Kirschner wires respectively, and the positioning holes are located on the movement track of the needle points of the Kirschner wires. In the operation, can improve the establishment accuracy of two tunnels of femur, simultaneously, once only establish two tunnels and can reduce the damage to soft tissue, promote patient postoperative and resume the speed.

Description

Ligament repair instrument

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a ligament repair instrument.

Background

Knee joint is a very important joint part on human body, is a key for keeping the normal movement of legs, and the movement of knee joint is stable, and is mainly fixed on tibia and femur by means of ligament, wherein anterior cruciate ligament has the functions of limiting the advancement of tibia and regulating the rotation of part.

The anterior cruciate ligament is in the motion in-process, can appear the circumstances of fracture damage, and prior art is mainly to the anterior cruciate ligament rebuilds the operation, and chinese patent application number 202011575994.1's utility model discloses an anterior cruciate ligament prosthetic devices, has pegged graft in mount one end and has k's needle guide sleeve, is equipped with logical groove and fastening mechanism on the locating rack, and the other end of mount passes logical groove, and the locating rack can slide and pass through fastening mechanism and mount fastening connection for the mount.

However, the applicant has found that the prior art suffers from at least the following problems:

during double-bundle reconstruction or repair, a femur side AM and PL double tunnel needs to be established, and the femur side AM and PL tunnels cannot be accurately established by adopting a single Kirschner wire in the existing instrument.

Disclosure of Invention

In view of the above, the present utility model aims to provide a ligament repair device to solve the problem that femoral side AM and PL tunnels cannot be accurately established during double-beam reconstruction or repair.

Based on the above purpose, the utility model provides a ligament repair device, which comprises a fixing frame, wherein a Kirschner wire guide sleeve is detachably arranged in the fixing frame, and the side surface of the fixing frame is fixedly connected with a mounting frame, and is characterized in that: two groups of guide holes are formed in the Kirschner wire sleeve, and Kirschner wires are respectively arranged in the two groups of guide holes; the sliding groove is formed in the mounting frame, the movable seat is arranged in the sliding groove in an adapting mode, the positioner is detachably arranged at the end part of the movable seat, the front end face of the positioner is integrally formed with a top hook, two groups of positioning holes are formed in the top hook and correspond to the two groups of Kirschner wires respectively, and the positioning holes are located on the movement track of the needle points of the Kirschner wires.

Alternatively, the apertures of the two groups of positioning holes are 2mm, and the diameter of the Kirschner wire is 2mm.

Optionally, the hole center distance of the two groups of positioning holes is 4mm.

Optionally, the length of the top hook on the straight line where the hole centers of the two groups of positioning holes are located is 1cm.

Optionally, open there is logical groove mounting bracket both sides, and the mounting bracket is marked with the scale, and the scale is located logical groove place surface, and the end that removes the seat and be in the sliding tray installs the scale pointer, and scale pointer points to the scale, it has fixed subassembly still to fix on the seat to remove, and fixed subassembly will remove the seat and fix in the mounting bracket and predetermine the position.

Optionally, a screw hole is formed in the side edge of the fixing frame, a threaded pin is installed in the screw hole in a threaded mode, and a rotating handle is connected to the end portion of the threaded pin.

Optionally, lead to the groove and extend along moving the seat direction of movement, fixed subassembly is including running through the screw rod of installing on moving the seat, screw rod tip fixedly connected with splint, and the locking plate is installed to last screw thread still on the screw rod, and locking plate and splint are installed respectively in the both sides of mounting bracket, fixed locking plate, and rotatory screw rod makes the distance between splint and the locking plate more and more nearer, until locking plate and splint follow both sides with the mounting bracket clamp.

Optionally, the locator end connection has the connecting seat, fixedly connected with double-screw bolt on the connecting seat, the screw hole has been seted up to the removal seat end, and the double-screw bolt matches with the screw hole.

Optionally, the mounting groove has been seted up to the connection seat tip, install the bolt in the mounting groove, install reset spring between bolt and the mounting groove inner wall, the bolt side is connected with the driving lever, and the jack has been seted up to the removal seat tip, and under the double-screw bolt state of screwing, the jack is relative with the mounting groove, and reset spring makes the bolt have the trend of inserting in the jack, toggles the position of driving lever removal bolt

The utility model has the beneficial effects that: the utility model provides a ligament repair instrument, which is characterized in that two groups of guide holes are formed in a Kirschner wire sleeve, and Kirschner wires are respectively arranged in the two groups of guide holes; the sliding tray is internally provided with the sliding tray, the movable seat is adaptively arranged in the sliding tray, the end part of the movable seat is detachably provided with the positioner, the front end surface of the positioner is integrally formed with the top hook, two groups of positioning holes are formed in the top hook and correspond to two groups of Kirschner wires respectively, the positioning holes are positioned on the movement track of the needle points of the Kirschner wires, an AM tunnel and a PL tunnel can be simultaneously established on a femur during operation, the establishment accuracy of the femur double tunnel is improved, and meanwhile, the damage to soft tissues can be reduced by establishing the double tunnels once.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the utility model and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a ligament repair device according to an embodiment of the present utility model;

FIG. 2 is a schematic top view of portion A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of a ligament repair device according to an embodiment of the utility model;

FIG. 4 is a partially enlarged schematic illustration of portion B of FIG. 3;

fig. 5 is a schematic cross-sectional view of a fixation assembly of a ligament repair device according to an embodiment of the utility model.

Marked in the figure as:

101. a fixing frame; 102. a k-wire guide sleeve; 103. a disc; 104. a k-wire; 105. a threaded pin; 106. a rotating handle; 201. a mounting frame; 202. a movable seat; 203. a scale pointer; 204. a locking plate; 205. a screw; 206. a roller; 207. a rotating shaft; 208. a rotary handle; 209. a clamping plate; 301. a connecting seat; 302. a deflector rod; 303. a positioner; 304. positioning holes; 305. a stud; 306. a mounting groove; 307. a return spring; 308. a jack; 309. a plug pin; 310. and (5) a top hook.

Detailed Description

The present utility model will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present utility model more apparent.

It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

As shown in fig. 1 to 5, a specific embodiment of the present utility model provides a ligament repair device, which includes a fixing frame 101, a kirschner wire guide sleeve 102 is detachably mounted in the fixing frame 101, and a mounting frame 201 is fixedly connected to a side surface of the fixing frame 101, and is characterized in that: two groups of guide holes are formed in the Kirschner wire sleeve, and Kirschner wires 104 are respectively arranged in the two groups of guide holes; the inside sliding tray that has offered of mounting bracket 201, the adaptation is installed in the sliding tray and is moved seat 202, moves seat 202 tip demountable installation and has been moved the locator 303, and terminal surface integrated into one piece has a top hook 310 before the locator 303, has offered two sets of locating holes 304 on the top hook 310, and two sets of locating holes 304 correspond with two sets of kirschner wires 104 respectively, and locating hole 304 is located on the motion track of kirschner wire 104 needle point.

The locator 303 is used for locating during operation, and the two groups of Kirschner wires 104 are used for perforating on the femur, so that an AM tunnel and a PL tunnel can be simultaneously established on the femur, the problem that a single Kirschner wire needs to be repeatedly located and located inaccurately when a double tunnel is established is avoided, the establishment accuracy of the double femur tunnel is improved, meanwhile, the damage to soft tissues can be reduced by establishing the double tunnel once, and the postoperative recovery speed of a patient is improved.

In some alternative embodiments, the front end of the k-wire guide sleeve 102 is an inclined surface that is adapted to the femur contact surface.

In some alternative embodiments, the two sets of positioning holes 304 have a diameter of 2mm and the k-wire 104 has a diameter of 2mm. The tunnel is built with small inner diameter, so that bone loss can be reduced, and the recovery speed of a patient can be improved.

In some alternative embodiments, the center-to-center distance of the two sets of locating holes 304 is 4mm.

In some alternative embodiments, the top hook 310 has a length of 1cm along a line along which the centers of the two sets of positioning holes 304 are located.

In some optional embodiments, the mounting frame 201 is arc-shaped, through grooves are formed on two sides of the mounting frame 201, scales are marked on the mounting frame 201, the scales are arranged on the surface where the through grooves are located, the end part of the movable base 202 in the sliding groove is provided with a scale pointer 203, the scale pointer 203 points to the scales, a fixing component is fixedly arranged on the movable base 202, and the fixing component fixes the movable base 202 at a preset position of the mounting frame 201.

In some alternative embodiments, as shown in the figure, a screw hole is formed at the side of the fixing frame 101, a threaded pin 105 is installed in the screw hole, and a rotating handle 106 is connected to the end of the threaded pin 105. Rotating the knob 106 causes the threaded pin 105 to lockingly secure the k-wire guide sleeve 102.

In some alternative embodiments, as shown, the end of the k-wire guide sleeve 102 is fitted with a disc 103. The k-wire 104 is conveniently guided.

In some alternative embodiments, as shown in the drawings, the through groove extends along the moving direction of the moving seat 202, the fixing assembly includes a screw rod 205 penetrating through and installed on the moving seat 202, a clamping plate 209 is fixedly connected to an end of the screw rod 205, a locking plate 204 is further installed on the screw rod 205 in a threaded manner, the locking plate 204 and the clamping plate 209 are respectively installed on two sides of the mounting frame 201, the locking plate 204 is fixed, and the screw rod 205 is rotated so that the distance between the clamping plate 209 and the locking plate 204 is closer and closer until the locking plate 204 and the clamping plate 209 clamp the mounting frame 201 from two sides. The movable base 202 is fixed by pressing the locking plate 204 with a finger and then rotating the screw 205 so that the distance between the clamping plate 209 and the locking plate 204 approaches until the clamping plate 209 and the locking plate 204 clamp the mounting frame 201 tightly from both ends.

In some alternative embodiments, as shown, the screw 205 has a knob 208 mounted thereon. The knob 208 facilitates rotation of the screw 205.

In some alternative embodiments, as shown in the drawings, the end of the positioner 303 is connected with a connecting seat 301, a stud 305 is fixedly connected to the connecting seat 301, and a threaded hole is formed in the end of the moving seat 202, and the stud 305 is matched with the threaded hole. When the screw bolt 305 is used, when tunnels are respectively established for the femur and the tibia, the femur guide and the tibia guide need to be replaced, and the screw bolt 305 can be screwed out of the threaded hole by rotating the positioner 303, so that replacement is realized.

In some alternative embodiments, as shown in the drawings, the end of the connection seat 301 is provided with a mounting groove 306, a latch 309 is installed in the mounting groove 306, a return spring 307 is installed between the latch 309 and the inner wall of the mounting groove 306, a deflector rod 302 is connected to the side of the latch 309, a jack 308 is provided at the end of the movable seat 202, in the screwed state of the stud 305, the jack 308 is opposite to the mounting groove 306, the return spring 307 makes the latch 309 have a tendency to be inserted into the jack 308, and the position of the latch 309 is moved by the deflector rod 302. When in use, after the connecting seat 301 is fixed at the end of the movable seat 202, the mounting groove 306 is opposite to the insertion hole 308, under the action of the elastic force of the return spring 307, the end of the plug 309 is inserted into the insertion hole 308, and the other end is left in the mounting groove 306 to limit the rotation of the connecting seat 301 relative to the movable seat 202, so that the fixing of the positioner 303 is more stable, and when the connecting seat 301 is detached, the deflector 302 is pulled to move the plug 309 out of the insertion hole 308, the rotation limit of the connecting seat 301 relative to the movable seat 202 is released, and the connecting seat 301 can be unscrewed.

In some alternative embodiments, as shown in the drawings, a rotating shaft 207 is provided on the mounting frame 201, a roller 206 is mounted on the rotating shaft 207, the roller 206 is connected to the moving seat 202 in a contact manner, and the roller 206 rotates to drive the moving seat 202 to move.

The working principle of the utility model is as follows: the locator 303 is used for locating during operation, and the two groups of Kirschner wires 104 are used for perforating on the femur, so that an AM tunnel and a PL tunnel can be simultaneously established on the femur, the problem that a single Kirschner wire needs to be repeatedly located and located inaccurately when a double tunnel is established is avoided, the establishment accuracy of the double femur tunnel is improved, meanwhile, the damage to soft tissues can be reduced by establishing the double tunnel once, and the postoperative recovery speed of a patient is improved.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the utility model (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity.

The present utility model is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a ligament repair instrument, includes the mount, can dismantle the installation in the mount and have k shi needle guide sleeve, mount side fixedly connected with mounting bracket, its characterized in that: two groups of guide holes are formed in the Kirschner wire guide sleeve, and Kirschner wires are respectively arranged in the two groups of guide holes; the sliding groove is formed in the mounting frame, the movable seat is arranged in the sliding groove in an adapting mode, the positioner is detachably arranged at the end part of the movable seat, the front end face of the positioner is integrally formed with a top hook, two groups of positioning holes are formed in the top hook and correspond to the two groups of Kirschner wires respectively, and the positioning holes are located on the movement track of the needle points of the Kirschner wires.

2. A ligament repair device according to claim 1 characterised in that the apertures of the two sets of locating holes are 2mm and the kirschner wire is 2mm in diameter.

3. A ligament repair device according to claim 1 characterised in that the hole-to-hole spacing of the two sets of locating holes is 4mm.

4. A ligament repair device according to claim 1 characterised in that the length of the top hook on the line of the centres of the two sets of locating holes is 1cm.

5. A ligament repair device according to claim 1 characterised in that the mounting frame is provided with through grooves on both sides, the mounting frame is marked with graduations, the graduations are arranged on the surface of the through grooves, the end part of the movable seat in the sliding groove is provided with a staff gauge pointer pointing to the graduations, the movable seat is also fixedly provided with a fixing component, and the fixing component fixes the movable seat at the preset position of the mounting frame.

6. A ligament repair device according to claim 1 characterised in that the side of the holder is provided with a screw hole in which a threaded pin is mounted, the end of the pin being connected to a stem.

7. A ligament repair device according to claim 5 in which the through slot extends along the direction of movement of the movable seat, the fixing means comprises a screw rod which is mounted through the movable seat, the screw rod end is fixedly connected with a clamping plate, the screw rod is further provided with a locking plate in a threaded manner, the locking plate and the clamping plate are respectively mounted on two sides of the mounting frame, the locking plate is fixed, and the screw rod is rotated so that the distance between the clamping plate and the locking plate is gradually shortened until the locking plate and the clamping plate clamp the mounting frame from two sides.

8. A ligament repair device according to claim 1 characterised in that the end of the locator is connected with a connecting seat, the connecting seat is fixedly connected with a stud, the end of the movable seat is provided with a threaded hole, and the stud is matched with the threaded hole.

9. A ligament repair device according to claim 8 characterised in that the connection socket has a mounting groove formed in its end, a plug is mounted in the mounting groove, a return spring is mounted between the plug and the inner wall of the mounting groove, a deflector rod is connected to the side of the plug, a socket is formed in the end of the movable socket, the socket is opposite to the mounting groove in the screwed state of the stud, the return spring causes the plug to have a tendency to be inserted into the socket, and the deflector rod is moved by pulling the position of the plug.