CN220404139U - Posterior cruciate ligament tibia positioner - Google Patents

Abstract

The utility model relates to the technical field of medical treatment, in particular to a posterior cruciate ligament tibia locator, which comprises: the positioning assembly comprises a guide handle, a positioning arm and a locking assembly, and the locking assembly is fixedly connected with the guide handle; the positioning arm comprises a sliding end and a positioning end, a communication channel, a first positioning hole and a second positioning hole are formed in the positioning end, and the first positioning hole and the second positioning hole are communicated through the communication channel; the sliding end is in sliding connection with the guide handle; a guide assembly including a first guide member and a second guide member; the locking component is detachably connected with the guide component; one end of the first guide piece extends into the first positioning hole; the utility model realizes the rapid disassembly and replacement of the second guide piece, shortens the preparation time of the tibial bone guide, and avoids the influence on the positioning accuracy caused by repeated positioning; meanwhile, the guide wire has good guidance quality, so that the guide wire can smoothly pass through the second positioning hole, the operation is more convenient, nerves at the posterior cruciate ligament are avoided, and the possibility of successful operation is improved.

Description

Posterior cruciate ligament tibia positioner

Technical Field

The utility model relates to the technical field of medical treatment, in particular to a tibial locator for a posterior cruciate ligament.

Background

Posterior cruciate ligament rupture is one of the most common injuries in the sports discipline. When the ordinary person moves severely, ligament strain is easy to occur, when the action beyond the joint movement range is rapidly performed, the posterior cruciate ligament is easy to tear or break completely due to passive traction, and often is accompanied by sprain and fracture, the damaged ligament cannot be repaired, the patient cannot recover normal sports and daily life, and the ligament should be diagnosed, treated and repeated in time after the ligament is damaged.

The lower dead center of the posterior cruciate ligament is positioned at the posterior lateral edge of the tibial plateau, and the operation difficulty is high due to the fact that the posterior cruciate ligament is positioned later. The preparation of the tibial bone canal of the postoperative lower dead center in the reconstruction of the posterior cruciate ligament is mainly carried out by a tibial tunnel technology, the existing tibial bone canal positioner is limited in form, the preparation of the tibial bone canal can be completed by repeatedly positioning in and out of a joint cavity in operation, and the problem that a guide wire is difficult to pass out is solved, so that the position of the bone canal is deviated, the smooth passing out of the guide wire cannot be realized, and finally, the operation effect is greatly reduced or the operation fails.

Based on the defects existing in the prior art, a posterior cruciate ligament tibia locator needs to be studied to solve the problems.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the posterior cruciate ligament tibia locator, which realizes the rapid disassembly and replacement of the second guide piece through the locking component, shortens the preparation time of tibia bone guide, and avoids the influence on the positioning accuracy caused by repeated positioning; meanwhile, the guide wire has good guidance quality, so that the guide wire can smoothly pass through the second positioning hole, the operation is more convenient, nerves at the position of the posterior cruciate ligament are avoided, the healing of the posterior cruciate ligament is facilitated, and the possibility of success of the operation is improved.

The present utility model provides a posterior cruciate ligament tibial locator comprising:

the positioning assembly comprises a guide handle, a positioning arm and a locking assembly, and the locking assembly is fixedly connected with the guide handle;

the positioning arm comprises a sliding end and a positioning end, a communication channel, a first positioning hole and a second positioning hole are formed in the positioning end, and the first positioning hole and the second positioning hole are communicated through the communication channel; the sliding end is in sliding connection with the guide handle;

the guide assembly comprises a first guide piece and a second guide piece, and the locking assembly, the second guide piece and the first guide piece are sleeved in sequence from outside to inside; the locking component is detachably connected with the guide component; one end of the first guide piece extends into the first positioning hole.

Further, the first positioning hole and the second positioning hole are provided at a side of the positioning end, which is close to the locking assembly, and the communication channel is arranged along a length direction of the positioning arm.

Further, the locking assembly comprises a first buckling piece, a second buckling piece and a first locking piece, wherein the first buckling piece and the second buckling piece are buckled and connected to form a cylindrical space;

the first end of the first locking piece is fixedly connected with the first buckling piece, and the second end of the first locking piece is detachably connected with the second buckling piece.

Further, the first end of the first buckling piece is fixedly connected with the guide handle, the second end of the first buckling piece is rotationally connected with the first end of the second buckling piece, and the third end of the first buckling piece is buckled and connected with the second end of the second buckling piece.

Further, a center extension line of the second guide member intersects the first positioning hole;

the positioning end is further provided with a positioning protrusion, the positioning protrusion is arranged below the first positioning hole, and the tip of the positioning protrusion faces the locking assembly.

Further, the second guide piece is a guide sleeve;

the second guide piece is provided with a first anti-withdrawal structure and a first scale mark for displaying the insertion depth of the first guide piece into the tibia, and the first scale mark is arranged along the length direction of the second guide piece;

the locking assembly is provided with a second anti-withdrawal structure matched with the first anti-withdrawal structure, and the first anti-withdrawal structure is clamped with the second anti-withdrawal structure, so that the second guide piece can only move towards the positioning end.

Further, the first anti-back structure and the second anti-back structure are both tooth-shaped structures, and teeth on the tooth-shaped structures face the same direction, so that the second guide piece can move towards the positioning end.

Further, the second guide is a drill bit;

a second scale mark for displaying the drilling depth of the drill bit is arranged along the length direction of the drill bit;

the cutting end of drill bit is provided with joint portion, joint portion can with the protruding joint of location.

Further, the axis of the first positioning hole coincides with the axis of the first guide.

Further, the guide handle also comprises a second locking piece;

the guide handle is provided with a chute, the sliding end is arranged in the chute, and the sliding end is in sliding connection with the chute;

the sliding groove is internally provided with a threaded hole, and one end of the locking piece with threads stretches into the threaded hole and is abutted with the sliding end so as to fix the positioning arm.

The embodiment of the utility model has the following beneficial effects:

according to the utility model, the second guide piece is quickly disassembled and replaced through the locking assembly, so that the tibia is prevented from being positioned by frequently entering and exiting the joint cavity, the preparation of a tibial bone canal can be finished by using the posterior cruciate ligament tibia positioner, the preparation time of the tibial bone guide is shortened, and the influence on positioning accuracy caused by repeated positioning is avoided; simultaneously through setting up first locating hole, intercommunication passageway, second locating hole, realize that the seal wire is worn out and pass through first locating hole, intercommunication passageway and second locating hole in proper order by the second guide, this has good guidance quality to the seal wire for the seal wire wears out from the second locating hole smoothly, and the operation is more convenient, and avoids the nerve of posterior cruciate ligament department, is favorable to the healing of posterior cruciate ligament, improves the successful possibility of operation.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, the following description will make a brief introduction to the drawings used in the description of the embodiments or the prior art. It should be apparent that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained from these drawings without inventive effort to those of ordinary skill in the art.

Fig. 1 is a front view of a first posterior cruciate ligament tibial locator of the present embodiment;

fig. 2 is a top view of a first posterior cruciate ligament tibial locator according to the present embodiment;

fig. 3 is an isometric view of a first posterior cruciate ligament tibial locator according to the present embodiment;

fig. 4 is a front view of a second illustrative posterior cruciate ligament tibial locator of the present embodiment;

fig. 5 is an isometric view of a second posterior cruciate ligament tibial locator of the present embodiment;

FIG. 6 is a block diagram of a positioning arm according to the present embodiment;

fig. 7 is a cross-sectional view of the positioning arm according to this embodiment.

Wherein, the reference numerals in the figures correspond to:

11-a guide handle; 12-positioning arms; 13-a locking assembly; 21-a first guide; 22-a second guide; 111-a second locking member; 112-a chute; 121-a communication channel; 122-a first positioning hole; 123-a second positioning hole; 124-positioning projections; 131-first fastener; 132-a second fastener; 133-a first locking member; 221-first scale identification; 222-a first anti-back-out structure; 223-second scale mark.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

Aiming at the defects of the prior art, the quick disassembly and replacement of the second guide piece are realized through the locking component, the tibia is prevented from being positioned by frequently entering and exiting the joint cavity, the preparation of the tibial bone canal can be finished by using the posterior cruciate ligament tibial locator, the preparation time of the tibial bone canal is shortened, and the influence on the positioning accuracy caused by repeated positioning is avoided; simultaneously through setting up first locating hole, intercommunication passageway, second locating hole, realize that the seal wire is worn out and pass through first locating hole, intercommunication passageway and second locating hole in proper order by the second guide, this has good guidance quality to the seal wire for the seal wire wears out from the second locating hole smoothly, and the operation is more convenient, and avoids the nerve of posterior cruciate ligament department, is favorable to the healing of posterior cruciate ligament, improves the successful possibility of operation.

Referring to fig. 1-7, the present embodiment provides a posterior cruciate ligament tibial locator comprising: the positioning assembly comprises a guide handle 11, a positioning arm 12 and a locking assembly 13, and the locking assembly 13 is fixedly connected with the guide handle 11; the positioning arm 12 comprises a sliding end and a positioning end, the positioning end is provided with a communication channel 121, a first positioning hole 122 and a second positioning hole 123, and the first positioning hole 122 and the second positioning hole 123 are communicated through the communication channel 121; the sliding end is in sliding connection with the guide handle 11; the guide assembly comprises a first guide piece 21 and a second guide piece 22, and the locking assembly 13, the second guide piece 22 and the first guide piece 21 are sleeved in sequence from outside to inside; the locking component 13 is detachably connected with the guide component 2; one end of the first guide 21 protrudes into the first positioning hole 122.

It should be noted that: in the embodiment, the locking component 13 is used for realizing quick disassembly and replacement of the second guide piece 22, so that the tibia is prevented from being positioned by frequently entering and exiting the joint cavity, the preparation of the tibial bone canal can be finished by using the posterior cruciate ligament tibial locator, the preparation time of the tibial bone canal is shortened, and the influence on positioning accuracy caused by repeated positioning is avoided; meanwhile, by arranging the first positioning hole 122, the communication channel 121 and the second positioning hole 123, the guide wire is penetrated out of the second guide piece 22 and sequentially passes through the first positioning hole 122, the communication channel 121 and the second positioning hole 123, so that the guide wire has good guiding property, the guide wire is smoothly penetrated out of the second positioning hole 123, the operation is more convenient, nerves at the position of a posterior cruciate ligament are avoided, healing of the posterior cruciate ligament is facilitated, and the possibility of success of an operation is improved.

In some possible embodiments, the first positioning hole 122 and the second positioning hole 123 are provided at a side of the positioning end near the locking assembly 13, and the communication passage 121 is arranged along the length direction of the positioning arm 12.

Also to be described is: the guide wire in this embodiment is used for repairing the posterior cruciate ligament, after the guide wire passes through the first positioning hole 122 and the communication channel 121, the guide wire is penetrated out through the second positioning hole 123, because the first positioning hole 122 and the second positioning hole 123 are arranged on the same side of the positioning end, good guiding performance is achieved for the guide wire, the possibility that the guide wire penetrates out from the other side of the positioning end to increase the nerve contacting the cruciate ligament can also be avoided, the guide wire can directly repair the posterior cruciate ligament by arranging the first positioning hole 122 and the second positioning hole 123 on the side close to the tibia and the cruciate ligament, the guide wire does not need to be penetrated, the guide wire avoids the nerve at the posterior cruciate ligament, the healing of the posterior cruciate ligament is facilitated, and the possibility of success of operation is improved.

Specifically, the first positioning hole 122 is close to the positioning protrusion 124, the second positioning hole 123 is close to the sliding end of the positioning arm, the communication channel 121 is arranged along the length direction of the positioning arm 12, so that after the guide wire is penetrated out of the second positioning hole 123, the repair of the posterior cruciate ligament can be directly ensured, the guide wire is prevented from touching the nerve at the posterior cruciate ligament, the healing of the posterior cruciate ligament is facilitated, and the possibility of successful operation is improved.

Further, the communication channel 121 is an arc-shaped channel, which facilitates the passage of the guide wire and shortens the guide wire passing time.

Specifically, the communication channel 121 is curved toward the tibial side, which facilitates the passage of the guide wire while minimizing the path, thereby saving time.

In some possible embodiments, the locking assembly 13 comprises a first fastener 131, a second fastener 132, and a first locking member 133, the first fastener 131 and the second fastener 132 being snap-connected to form a cylindrical space; the first end of the first locking member 133 is fixedly connected with the first buckling member 131, and the second end of the first locking member 133 is detachably connected with the second buckling member 132; through setting up first buckling piece 131, second buckling piece 132 and first retaining member 133 and realizing the detachable connection to the direction subassembly, when the posterior cruciate ligament tibia locator is in the locate mode to the tibia always, realize dismantling and changing fast to the direction subassembly, avoid the location to influence positioning accuracy repeatedly, and reduce the successful possibility of operation.

Specifically, through the change to second guide 22, will change the uide bushing into the drill bit, realize punching the back to the tibia at first guide 21, continue to bore by the drill bit, this can avoid frequently advancing into and out the joint chamber and fix a position the tibia, realize using the preparation that the back cruciate ligament tibia locator of this application just can accomplish the tibia bone way, shorten the time to tibia bone guide preparation to avoid repeatedly fixing a position and influence positioning accuracy.

In some possible embodiments, the first end of the first fastener 131 is fixedly connected to the guide handle 11, the second end of the first fastener 131 is rotatably connected to the first end of the second fastener 132, the third end of the first fastener 131 is fastened to the second end of the second fastener 132, the first fastener 131 is fixed to the guide handle 11, and the second fastener 132 rotates around the first fastener 131, so that quick removal and replacement of the guide assembly can be achieved.

In some possible embodiments, the central extension of the second guide 22 intersects the first positioning hole 122; the positioning end is also provided with a positioning bulge 124, the positioning bulge 124 is arranged below the first positioning hole 122, the tip end of the positioning bulge 124 is arranged towards the locking component 13, and the positioning bulge 124 can position the tibia, so that the positioning stability is improved; meanwhile, the positioning bulge 124 can be clamped with the drill bit, so that the drill bit is limited in position, and the influence of the drill bit shaking on the accuracy of subsequent operation is avoided.

Specifically, the positioning bulge is conical bulge, and through setting up conical bulge, can avoid taking place the skew, improves the accuracy of location, and then improves the preparation precision of shin bone way.

In some possible embodiments, the second guide 22 is a guide sleeve; the second guide 22 is provided with a first withdrawal prevention structure 222 and a first scale mark 221 for displaying the insertion depth of the first guide 21 into the tibia, and the first scale mark 221 is arranged along the length direction of the second guide 22; be provided with on the locking subassembly 13 with first structure 222 complex second of preventing moving back prevent moving back structure 222, first structure 222 and second prevent moving back structure joint to make second guide 22 only can move towards the location end, can lead first guide 21 through setting up second guide 22, guarantee that first guide 21 is to the tibia accuracy of punching, and prevent first guide 21 to move back through setting up first structure 222 of preventing moving back, further assurance first guide 21 is to the precision that tibia punched.

Specifically, the first withdrawal prevention structure 222 is disposed along the length direction of the second guide 22.

Specifically, the first guide 21 is a guide needle.

When the second guide piece 22 is a guide sleeve, the first anti-retreating structure 222 and the second anti-retreating structure are matched, so that the first guide piece 21 and the second guide piece 22 can only move towards the tibia, and cannot retreat, the guide needle is ensured to punch the tibia stably, and preparation is made for the subsequent tibial bone canal.

When the second guide member 22 is a drill bit, it is explained that the first guide member 21 has completed the punching operation on the tibia, and the second guide member 22 is replaced by a drill bit from the guide sleeve to perform the punching operation, so that the preparation of the tibial bone canal is completed without repeated positioning.

In some possible embodiments, the first and second anti-backup structures 222 and 222 are each toothed structures with teeth facing the same so that the second guide 22 can move toward the positioning end.

Specifically, the structure of the teeth on the tooth-shaped structure is not particularly limited, as long as the first and second anti-back structures 222 and 222 are ensured to cooperate with each other, so that the first guide 21 can move toward the positioning boss 124.

In some possible embodiments, the second guide 22 is a drill bit; along the length direction of the drill bit, a second scale mark 223 for displaying the penetration depth of the drill bit is provided; the cutting end of drill bit is provided with joint portion, and joint portion can with the protruding 124 joint of location, through joint portion and the protruding 124 joint of location, realizes the location to the drill bit, avoids the unable first locating hole 122 that enters into of guide wire in the drill bit, guarantees that the guide wire can enter into first locating hole 122 smoothly.

In some possible embodiments, the axis of the first positioning hole 122 coincides with the axis of the first guide 21.

Specifically, the axis of the second guide member 22 coincides with the axis of the first positioning hole 122, so that the guide wire in the second guide member 22 can directly enter the first positioning hole 122 through the second guide member 22, the time for the guide wire to enter the first positioning hole 122 is shortened, and the speed of repairing the posterior cruciate ligament is further improved.

In some possible embodiments, the guide handle 11 further comprises a second locking member 111; the guide handle 11 is provided with a chute 112, a sliding end is arranged in the chute 112, and the sliding end is in sliding connection with the chute 112; the spout 112 is equipped with the screw hole in, and the retaining member has the one end of screw thread to stretch into the screw hole to with sliding end butt, in order to fix positioning arm 12, through retaining member and screw hole cooperation, realize locking positioning arm 12 in the spout 112 of direction handle 11, avoid taking place to remove when operating the tibia, and then improve the precision when preparing the tibia bone canal, improve the stability that whole device used.

The working process of the posterior cruciate ligament tibia locator comprises the following steps: when the broken posterior cruciate ligament is to be repaired, the guide assembly is arranged at the initial position, the second locking piece 111 is rotated from the locking state to the releasing state, and the positioning arm 12 can slide in the sliding chute 112; the positioning arm 12 is clamped on the tibia, the positioning bulge 124 is abutted with one side of the tibia, one end of the first guide piece 21 is abutted with the other side of the tibia, and the second locking piece 111 is rotated from the loosening state to the locking state, so that the positioning of the tibia is completed; punching the tibia through the first guide piece 21, controlling the locking assembly 13 to be in an open state after punching is completed, replacing a guide sleeve sleeved on the first guide piece 21 with a drill bit, and controlling the locking assembly 13 to be in a locking state; after the drill bit is sleeved on the first guide piece 21, the drill bit drills holes on the basis of the holes drilled by the first guide piece 21 to prepare tibial bone tracts; the guide wire penetrates out from the inside of the drill bit and sequentially passes through the first positioning hole 122, the communication channel 121 and the second positioning hole 123, and the broken posterior cruciate ligament tibia can be repaired after the guide wire penetrates out from the second positioning hole 123.

While the utility model has been described in terms of preferred embodiments, the utility model is not limited to the embodiments described herein, but encompasses various changes and modifications that may be made without departing from the scope of the utility model.

In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed utility model.

The embodiments and features of the embodiments described herein can be combined with each other without conflict.

The above disclosure is only a preferred embodiment of the present utility model, and it is needless to say that the scope of the utility model is not limited thereto, and therefore, the equivalent changes according to the claims of the present utility model still fall within the scope of the present utility model.

Claims (10)

1. A posterior cruciate ligament tibial locator, comprising:

the positioning assembly comprises a guide handle (11), a positioning arm (12) and a locking assembly (13), wherein the locking assembly (13) is fixedly connected with the guide handle (11);

the positioning arm (12) comprises a sliding end and a positioning end, a communication channel (121), a first positioning hole (122) and a second positioning hole (123) are arranged on the positioning end, and the first positioning hole (122) and the second positioning hole (123) are communicated through the communication channel (121); the sliding end is in sliding connection with the guide handle (11);

the guide assembly comprises a first guide piece (21) and a second guide piece (22), and the locking assembly (13), the second guide piece (22) and the first guide piece (21) are sleeved in sequence from outside to inside; the locking component (13) is detachably connected with the guide component (2); one end of the first guide piece (21) extends into the first positioning hole (122).

2. The posterior cruciate ligament tibial locator of claim 1, wherein the first locating hole (122) and the second locating hole (123) are provided at a side of the locating end near the locking assembly (13), and the communication channel (121) is arranged along a length direction of the locating arm (12).

3. The posterior cruciate ligament tibial locator of claim 1, wherein the locking assembly (13) includes a first fastener (131), a second fastener (132), and a first locking member (133), the first fastener (131) and the second fastener (132) being snap-connected to form a cylindrical space;

the first end of the first locking piece (133) is fixedly connected with the first buckling piece (131), and the second end of the first locking piece (133) is detachably connected with the second buckling piece (132).

4. The posterior cruciate ligament tibial locator of claim 3, wherein the first end of the first fastener (131) is fixedly coupled to the guide handle (11), the second end of the first fastener (131) is rotatably coupled to the first end of the second fastener (132), and the third end of the first fastener (131) is snappingly coupled to the second end of the second fastener (132).

5. The posterior cruciate ligament tibial locator of claim 1, wherein a central extension of the second guide (22) intersects the first locating hole (122);

the positioning end is further provided with a positioning protrusion (124), the positioning protrusion (124) is arranged below the first positioning hole (122), and the tip of the positioning protrusion (124) is arranged towards the locking assembly (13).

6. The posterior cruciate ligament tibial locator of any of claims 1 to 5, wherein the second guide (22) is a guide sleeve;

the second guide piece (22) is provided with a first anti-withdrawal structure (222) and a first scale mark (221) for displaying the insertion depth of the first guide piece (21), and the first scale mark (221) is arranged along the length direction of the second guide piece (22);

the locking assembly (13) is provided with a second anti-withdrawal structure matched with the first anti-withdrawal structure (222), and the first anti-withdrawal structure (222) is clamped with the second anti-withdrawal structure so that the second guide piece (22) can only move towards the positioning end.

7. The posterior cruciate ligament tibial locator of claim 6, wherein the first and second anti-back structures (222) are each tooth-shaped structures with teeth on the tooth-shaped structures facing the same direction to enable the second guide (22) to move toward the locating end.

8. The posterior cruciate ligament tibial locator of any of claims 1 to 5, wherein the second guide (22) is a drill;

along the length direction of the drill bit, a second scale mark (223) for displaying the penetration depth of the drill bit is arranged;

the cutting end of the drill bit is provided with a clamping part which can be clamped with the positioning protrusion (124).

9. The posterior cruciate ligament tibial locator of any of claims 1 to 5, wherein an axis of the first locating hole (122) coincides with an axis of the first guide (21).

10. The posterior cruciate ligament tibial locator of any of claims 1 to 5, wherein the guide handle (11) further comprises a second locking element (111);

the guide handle (11) is provided with a chute (112), the sliding end is arranged in the chute (112), and the sliding end is in sliding connection with the chute (112);

the sliding groove (112) is internally provided with a threaded hole, and one end of the locking piece with threads stretches into the threaded hole and is abutted with the sliding end so as to fix the positioning arm (12).