CN214965373U

CN214965373U - Tibial tunnel lead traction device for reconstruction of posterior cruciate ligament under arthroscope

Info

Publication number: CN214965373U
Application number: CN202120424592.5U
Authority: CN
Inventors: 尚文强; 张彬; 王琳
Original assignee: Fengfeng General Hospital Of North China Medical And Health Group
Current assignee: Fengfeng General Hospital Of North China Medical And Health Group
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-03
Anticipated expiration: 2031-02-26

Abstract

The utility model relates to the technical field of medical equipment, in particular to a tibial tunnel lead traction device for reconstructing posterior cruciate ligament under arthroscope, which comprises an outer rod and a steel wire, wherein the inner wall of the outer rod is provided with a cavity communicated with the left and the right, the inner wall of the cavity is connected with an inner rod in a sliding way, the right side of the outer rod is fixedly connected with an arc-shaped rod, the arc-shaped rod and the inner rod are both of hollow structures, the cavity is communicated with the inner wall of the inner rod and the inner wall of the arc-shaped rod, the steel wire is arranged in the inner wall of the cavity, the inner rod, the outer rod, a movable block and a lug, when the device passes through the incision of tibia, a worker can drive the inner rod to move by pushing the movable block and the lug, thereby adjusting the position of the arc-shaped rod, the medical worker does not need to move arms, only needs to push the lug by fingers, thereby being convenient for the medical worker to use, make the device can be applicable to the shin bone thickness of different width simultaneously, improved the practicality of device.

Description

Tibial tunnel lead traction device for reconstruction of posterior cruciate ligament under arthroscope

Technical Field

The utility model relates to the technical field of medical equipment, specifically be a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under the arthroscope.

Background

The fracture of the posterior cruciate ligament of the knee joint is a common type of knee joint injury, the current domestic and foreign conventional surgical operation method adopts a four-incision posterior cruciate ligament reconstruction technology under an arthroscope, one of the operation difficulties is that a ligament traction line is sent to the back of a tibial tunnel from the front of the tibial tunnel and then is folded back to the front of the knee joint, the step needs to make 4 incisions on the front inner side, the front outer side, the back inner side and the back outer side of the knee joint respectively, then the operation is carried out through the back inner and back outer incisions, the back room interval is cleaned, the back outlet of the tibial tunnel is searched under the arthroscope, people generally use a hook-shaped traction instrument to match a hollow cylinder, the traction line is pulled from one side of the tibial tunnel to the other side, the existing traction device cannot adjust the length of the tibial tunnel, the knee joint is not convenient for a worker to use, the worker needs to adjust the length of the traction device by moving the arm, errors are easily caused.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under the arthroscope possesses convenient to use, can adjust advantages such as length, has solved the problem that traditional draw gear can't adjust length.

The utility model discloses a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under arthroscope, including outer pole and steel wire, the cavity of intercommunication about the inner wall of outer pole is equipped with, pole in the inner wall sliding connection of cavity, the right side fixedly connected with arc pole of outer pole, arc pole and interior pole are hollow structure, the inner wall of cavity and interior pole and the inner wall of arc pole communicate each other, the steel wire sets up in the inner wall of cavity and interior pole and the inner wall of arc pole, the both ends of steel wire are located the left side of outer pole and the opening part of arc pole bottom respectively, the steel wire is located the left one end of outer pole and is equipped with the knot, the steel wire is located arc pole bottom one end fixedly connected with gib head.

The utility model discloses a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under the arthroscope, wherein the left side on outer pole surface is spherical.

The utility model discloses a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under arthroscope, the top fixedly connected with movable block of pole wherein, logical groove has been seted up at the top of outer pole inner wall, leads to groove and the cavity communicates each other, and movable block sliding connection leads to the inslot, and this structure sets up for the movable block can slide in leading to the inslot, thereby prescribes a limit to the motion range of pole in.

The utility model discloses a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under arthroscope, wherein the front and the equal fixedly connected with slider in the back of movable block, the gliding spout of can supplying the slider has all been seted up to the front and the back of the inner wall that lead to the groove, damping rubber has been cup jointed on the surface of slider, this structure sets up, make the slider can be at the spout internal motion, make more stability of movable block when the motion with this, damping rubber can make the slider more slow when the motion simultaneously, so that the operation of operation in-process more accurate.

The utility model discloses a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under arthroscope, wherein the top fixedly connected with lug of movable block, the lug is the hemisphere, and this structure sets up for the staff can take movable block and interior pole motion through promoting the lug, has improved the convenience of staff when using.

The utility model discloses a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under arthroscope, wherein the through wires hole that can supply the pull wire to pass is seted up on the surface of gib head.

The utility model discloses a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under arthroscope, wherein the surface of outer pole has cup jointed a spherical rubber sleeve, and the surface of rubber sleeve is equipped with curved sunken, and this structure sets up for the rubber sleeve can be held to the staff, thereby holds outer pole, has improved the convenience of staff when holding.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses an interior pole, outer pole, movable block, lug that set up for the staff can be through promoting movable block and lug when passing the incision department of shin bone with the device, thereby the motion in the drive, with this position of adjusting the arc pole, need not medical personnel and remove the arm operation, only need with the finger promote the lug can, thereby medical personnel of being convenient for use, make the device can be applicable to the shin bone thickness of different widths simultaneously, improved the practicality of device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic view of the overall front view cross-section structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic side view of the cross-sectional structure of the outer and inner rods of the present invention;

fig. 4 is a schematic view illustrating the operation of the operation principle of the present invention.

In the figure: 1. an outer rod; 2. an inner rod; 3. a cavity; 4. a rubber sleeve; 5. an arcuate bar; 6. a steel wire; 7. threading holes; 8. a movable block; 9. a bump; 10. a through groove; 11. a slider; 12. a chute.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Please refer to fig. 1-4, the utility model discloses a shin bone tunnel lead wire draw gear is rebuild to posterior cruciate ligament under arthroscope, including outer pole 1 and steel wire 6, the inner wall of outer pole 1 is equipped with cavity 3 of controlling the intercommunication, pole 2 in the inner wall sliding connection of cavity 3, the right side fixedly connected with arc pole 5 of outer pole 1, arc pole 5 and interior pole 2 are hollow structure, cavity 3 communicates with each other with the inner wall of interior pole 2 and the inner wall of arc pole 5, steel wire 6 sets up in the inner wall of cavity 3 and interior pole 2 and the inner wall of arc pole 5, the both ends of steel wire 6 are located the left side of outer pole 1 and the opening part of arc pole 5 bottom respectively, steel wire 6 is located the left one end of outer pole 1 and is equipped with the knot, steel wire 6 is located arc pole 5 bottom one end fixedly connected with gib head.

The left side of the surface of the outer rod 1 is spherical.

The top fixedly connected with movable block 8 of interior pole 2, logical groove 10 has been seted up at the top of 1 inner wall of outer pole, leads to groove 10 and cavity 3 intercommunication each other, and movable block 8 sliding connection leads to the inslot 10 in, this structure setting for movable block 8 can slide in leading to groove 10, thereby prescribes a limit to interior pole 2's motion range.

The equal fixedly connected with slider 11 in the front and the back of movable block 8, the gliding spout 12 of can supplying slider 11 has all been seted up to the front and the back of leading to the inner wall of groove 10, damping rubber has been cup jointed on slider 11's surface, this structure sets up, make slider 11 can be at spout 12 internal motion, make more stable when the motion of movable block 8 with this, damping rubber can make slider 11 more slow when the motion simultaneously, so that operation in-process more accurate operation.

The top fixedly connected with lug 9 of movable block 8, lug 9 are the hemisphere, and this structure sets up for the staff can take movable block 8 and interior pole 2 motion through promoting lug 9, has improved the convenience of staff when using.

The surface of the hook head is provided with a threading hole 7 for the traction thread to pass through.

A spherical rubber sleeve 4 is sleeved on the surface of the outer rod 1, the surface of the rubber sleeve 4 is provided with an arc-shaped recess, and the structure is arranged, so that a worker can hold the rubber sleeve 4, the outer rod 1 is held, and the convenience of the worker in holding is improved.

When using the utility model discloses the time: at first medical personnel cut a incision with the shin bone, then the device is put into from the incision, at the in-process of putting into, the staff can be through promoting lug 9, thereby it slides in logical groove 10 to drive movable block 8, with this interior pole 2 of drive in the interior motion of outer pole 1, thereby adjust the distance between arc pole 5 and the outer pole 1, thereby make the device can be applicable to the different shin bones of width, then the staff alright put into the shin bone tunnel with hollow section of thick bamboo, then pass hollow section of thick bamboo with the gib head end, and pass the threading hole 7 on the surface of gib head with the pull wire, slowly take out the gib head and whole device from the incision again at last, pull out the pull wire through the gib head simultaneously.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. Tibia tunnel lead traction device is rebuild to posterior cruciate ligament under arthroscope, including outer pole (1) and steel wire (6), its characterized in that: the inner wall of outer pole (1) is equipped with cavity (3) of controlling the intercommunication, interior pole (2) of inner wall sliding connection of cavity (3), the right side fixedly connected with arc pole (5) of outer pole (1), arc pole (5) and interior pole (2) are hollow structure, the inner wall of inner wall and arc pole (5) of cavity (3) and interior pole (2) communicate each other, steel wire (6) set up in the inner wall of inner wall and arc pole (5) of cavity (3) and interior pole (2), the both ends of steel wire (6) are located the left side of outer pole (1) and the opening part of arc pole (5) bottom respectively, steel wire (6) are located the left one end of outer pole (1) and are equipped with the knot, steel wire (6) are located arc pole (5) bottom one end fixedly connected with gib head.

2. The arthroscopic posterior cruciate ligament reconstruction tibial tunnel lead pulling device of claim 1, wherein: the left side of the surface of the outer rod (1) is spherical.

3. The arthroscopic posterior cruciate ligament reconstruction tibial tunnel lead pulling device of claim 1, wherein: the top fixedly connected with movable block (8) of interior pole (2), logical groove (10) have been seted up at the top of outer pole (1) inner wall, lead to groove (10) and cavity (3) intercommunication each other, and movable block (8) sliding connection is in leading to groove (10).

4. The arthroscopic posterior cruciate ligament reconstruction tibial tunnel lead pulling device of claim 3, wherein: the front and the back of the movable block (8) are fixedly connected with sliding blocks (11), sliding grooves (12) for the sliding of the sliding blocks (11) are formed in the front and the back of the inner wall of the through groove (10), and damping rubber is sleeved on the surface of the sliding blocks (11).

5. The arthroscopic posterior cruciate ligament reconstruction tibial tunnel lead pulling device of claim 3, wherein: the top of the movable block (8) is fixedly connected with a convex block (9), and the convex block (9) is hemispherical.

6. The arthroscopic posterior cruciate ligament reconstruction tibial tunnel lead pulling device of claim 1, wherein: the surface of the hook head is provided with a threading hole (7) for the traction thread to pass through.

7. The arthroscopic posterior cruciate ligament reconstruction tibial tunnel lead pulling device of claim 1, wherein: the surface of the outer rod (1) is sleeved with a spherical rubber sleeve (4), and the surface of the rubber sleeve (4) is provided with an arc-shaped recess.