CN213640997U - Thread passing device for posterior cruciate ligament reconstruction operation - Google Patents

Abstract

The utility model provides a back cruciate ligament is rebuild operation and is used line ware, including operating handle, one side of operating handle is fixed with a line ware, operating handle's front end is fixed with crosses the line sleeve, cross line sleeve and the coaxial setting of operating handle, it has a line ware of pushing away to insert in the line sleeve, the line ware of pushing away is connected with the push mechanism who sets up in operating handle, the line ware of pushing away stretches out or retracts from crossing the line sleeve under push-and-pull effect of push mechanism, the front end of line ware of pushing away stretches out the backward and crooked in one side of push mechanism who crosses the line sleeve from crossing the line sleeve. The pushing handle of the thread passing device adopts a cylindrical structure, so that the thread passing device is convenient to hold and push and is convenient for operation; the thread passing device is additionally provided with a tension structure at the tail part of the traction thread, so that the problem that the traction thread is loosened due to the loose rear end in the traction process is solved.

Description

Thread passing device for posterior cruciate ligament reconstruction operation

Technical Field

The utility model relates to the field of medical equipment, concretely relates to line passing device is used in posterior cruciate ligament reconstruction operation.

Background

The Posterior Cruciate Ligament (PCL) of the knee joint starts from the back part of the posterior fossa of the tibia intercondylar, runs obliquely backwards and upwards, and stops at the anterior-medial part of the intercondylar lateral surface of the femoral medial condyle, and has the main functions of stabilizing the knee joint and preventing the tibia from excessively moving backwards. PCL injury alone is often caused by direct violence on the knee joint at flexion position and excessive flexion of the knee joint. After PCL injury, arthroscopic ligament reconstruction surgery is typically required. Posterior cruciate ligament rebuilds art and need get patient's self tendon and weave, the tendon is woven and is required to pull the tendon both ends after the completion and pull the reconstruction of posterior cruciate ligament between thighbone and the shin bone in order to accomplish, the tendon is pulled the in-process and need send into the rope of weaving at tendon both ends through the shin bone tunnel and wear out in order being fixed in between thighbone and the shin bone from the thighbone tunnel, however because the aperture in shin bone tunnel is less and long and narrow, the rope of weaving of tendon tip is more soft, operating personnel often need spend longer time will weave the rope and send into and wear out from shin bone tunnel mouth department from the shin.

In order to solve the above problems, the invention with application number 201610495653.0 discloses a tibial tunnel threading traction push-pull device for orthopedic surgery, which comprises a stretching tube body which can be inserted into a tibial tunnel in a matching way, a movable push-pull rod is arranged in the tube in a matching way, the bending radian of the front working end of the movable push-pull rod can be deformed under stress and automatically elastically restored to the radian, after the tibial tunnel penetrates through the tibial tunnel, the front end of the movable push-pull rod can be sent to a height which is about 2cm higher than the plane of the tibial tunnel, so that a traction line can be conveniently grabbed or pushed out, the front end of the movable push-pull rod can be customized according to the functions of the pushing line and the traction line, and the bending radians of the.

However, the above device has the following problems: 1. the pushing device comprises a movable driving arm and a fixed hand-holding arm which is matched with the movable driving arm to open and close, and the pushing device is positioned below the tibia in the operation process, so that when a wire is fed, a user needs to turn over the wrist and sleeve the thumb and the forefinger in the finger ring to carry out the wire feeding operation, and the use is extremely inconvenient; 2. the device can't carry out stretch-draw to the rear end of pull wire, and the pull wire rear end is in the lax state, and when to the push of pull wire front end, the problem that the pull wire very easily takes place the pine to take off, and then leads to the pull wire to pile up in with the shin bone tunnel.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model designs a thread passing device for posterior cruciate ligament reconstruction surgery, the pushing handle of the thread passing device adopts a cylindrical structure, which is convenient for holding and pushing, and is convenient for surgical operation; the thread passing device is additionally provided with a tension structure at the tail part of the traction thread, so that the problem that the traction thread is loosened due to the loose rear end in the traction process is solved.

In order to achieve the technical effects, the utility model discloses a following technical scheme realizes:

the utility model provides a back cruciate ligament is rebuild operation and is used line ware, including operating handle, one side of operating handle is fixed with a line ware, operating handle's front end is fixed with crosses the line sleeve, cross line sleeve and the coaxial setting of operating handle, it has a line ware of pushing away to insert in the line sleeve, the line ware of pushing away is connected with the push mechanism who sets up in operating handle, the line ware of pushing away stretches out or retracts from crossing the line sleeve under push-and-pull effect of push mechanism, the front end of line ware of pushing away stretches out the backward and crooked in one side of push mechanism who crosses the line sleeve from crossing the line sleeve.

Furthermore, the wire pusher comprises a connecting rod, an elastic bending part and a U-shaped wire holding fork, one end of the connecting rod is connected with the pushing mechanism, the other end of the connecting rod is connected with the elastic bending part, and the U-shaped wire holding fork is fixed at the end part of the elastic bending part.

Furthermore, the front end of the wire passing sleeve is provided with a pre-bending part, the opening of the pre-bending part faces upwards, and two sides of the pre-bending part are provided with U-shaped wire clamping notches.

Furthermore, push mechanism include push-and-pull slider and interlock slider, push-and-pull slider and interlock slider fixed connection, operating handle on open and to have with push-and-pull slider assorted spout, the both sides of spout are equipped with the instruction scale mark, push-and-pull slider laminates in the spout, opens in the bottom of spout has the slip chamber, the interlock slider holding is in operating handle's slip chamber, the tip of connecting rod penetrate operating handle in and with interlock slider fixed connection.

Furthermore, the sliding cavity is a convex sliding cavity, the bottom of the sliding cavity is an arc surface, the linkage sliding block is accommodated in the sliding cavity, the shape of the linkage sliding block is matched with that of the sliding cavity, and the linkage sliding block can slide back and forth along the sliding cavity.

Furthermore, the wire tensioning device is of a triangular prism structure, and the top of the wire tensioning device is provided with a plurality of embedding holes.

The utility model has the advantages that: the pushing handle of the thread passing device adopts a cylindrical structure, so that the thread passing device is convenient to hold and push and is convenient for operation; the thread passing device is additionally provided with a tension structure at the tail part of the traction thread, so that the problem that the traction thread is loosened due to the loose rear end in the traction process is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of a thread guide for posterior cruciate ligament reconstruction;

FIG. 2 is a schematic view of the thread passing device for posterior cruciate ligament reconstruction;

FIG. 3 is a schematic cross-sectional view of the operating handle and the wire passing sleeve;

fig. 4 is the sectional view taken along the line a-a of fig. 3.

In the drawings, the components represented by the respective reference numerals are listed below:

the wire clamping device comprises an operating handle 1, a push-pull sliding block 2, a wire expander 3, a wire passing sleeve 4, a wire pusher 5, a sliding chute 11, a sliding cavity 12, a linkage sliding block 21, a pre-bending part 41, a U-shaped wire clamping notch 42, a connecting rod 51, an elastic bending part 52 and a U-shaped wire holding fork 54.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a back cruciate ligament is rebuild operation and is used line ware, including operating handle 1, one side of operating handle 1 is fixed with a line ware 3, the front end of operating handle 1 is fixed with line sleeve 4, cross line sleeve 4 and the coaxial setting of operating handle 1, it has a line pusher 5 to insert in the line sleeve 4, line pusher 5 is connected with the push mechanism who sets up on operating handle 1, line pusher 5 stretches out or retracts in crossing the line sleeve under push-and-pull effect of push mechanism, line pusher 5's front end is crooked from crossing one side that stretches out back push-and-pull slider 2 in the line sleeve 4.

As shown in fig. 2 to 4, the wire pusher 5 includes a link 51, an elastic bending portion 52, and a U-shaped wire holding fork 53, one end of the link 51 is connected to the pushing mechanism and the other end is connected to the elastic bending portion 52, and the U-shaped wire holding fork 53 is fixed to an end of the elastic bending portion 52. The front end of the wire passing sleeve 4 is provided with a pre-bending part 42, the pre-bending part 42 is bent upwards and has an upward opening, and two sides of the pre-bending part are respectively provided with a U-shaped wire clamping gap 42.

The pushing mechanism comprises a push-pull sliding block 2 and a linkage sliding block 21, the push-pull sliding block 2 is fixedly connected with the linkage sliding block 21, a sliding groove 11 matched with the push-pull sliding block is formed in the operating handle 1, indicating scale marks are arranged on two sides of the sliding groove 11, the indicating range of the indicating scale marks is 0-3cm, the push-pull sliding block 2 is attached to the sliding groove and can slide in the sliding groove, a sliding cavity 12 is formed in the bottom of the sliding groove 11, the linkage sliding block 21 is contained in the sliding cavity 12 of the operating handle, and the end portion of a connecting rod 51 penetrates into the operating handle 1 and is fixedly connected with the linkage sliding block 21.

The sliding cavity 12 is a convex sliding cavity, the bottom of the sliding cavity is an arc surface, the linkage sliding block 21 is accommodated in the sliding cavity, the shape of the linkage sliding block is matched with that of the sliding cavity, and the linkage sliding block 21 can slide back and forth along the sliding cavity 12.

One specific application of the device is as follows: the front end of the traction wire is embedded into the U-shaped wire clamping gaps 42 at the two sides of the wire passing sleeve 4, then the two tail ends of the traction wire are tensioned and drawn to one side of the wire passing sleeve 4, and the tail part of the traction wire is embedded into the embedding hole of the tensioning device 3, so that the traction wire is in a tensioning state, and the traction wire and the wire passing sleeve 4 are prevented from loosening or falling off in the process of passing through the tibial tunnel; then the traction wire and the wire passing sleeve 4 pass through the tibial tunnel together with the traction wire, when the wire passing sleeve 4 reaches the end of the tibial tunnel, the push-pull slider 2 is pushed forwards, the linkage slider 21 fixedly connected with the push-pull slider pushes the connecting rod 51 to slide forwards, the elastic bending part 52 fixed at the front end of the connecting rod 51 extends out from the opening of the pre-bending part 41 of the wire passing sleeve 4, the pre-bending part 41 is arc-shaped and has an upward opening, so that the elastic bending part 52 is bent upwards after extending out, in the process of extending the elastic bending part 52, the traction wire fixed at the front end of the wire passing sleeve 4 falls into the U-shaped wire holding fork at the front end of the elastic bending part 52 and is pushed forwards by the U-shaped wire holding fork 53, and the elastic bending part 52 gradually restores to the bending state in the process of extending, at this time, the traction wire is lifted by the U-shaped wire holding fork to a position which is parallel to or, the semi-annular traction ring can be observed conveniently through an arthroscope and can be grabbed.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The utility model provides a back cruciate ligament is rebuild operation and is used line ware, a serial communication port, including operating handle, one side of operating handle is fixed with a line ware, operating handle's front end is fixed with crosses the line sleeve, cross the coaxial setting of line sleeve and operating handle, it has a line pusher to insert in the line sleeve, line pusher is connected with the push mechanism who sets up in operating handle, line pusher stretches out or retracts from crossing the line sleeve under push-and-pull effect of push mechanism, line pusher's front end is stretched out in the line sleeve and is crooked to crossing telescopic push mechanism one side of line after.

2. The thread guide for posterior cruciate ligament reconstruction surgery as claimed in claim 1, wherein the thread pusher comprises a connecting rod, an elastic bending part and a U-shaped thread holding fork, one end of the connecting rod is connected with the pushing mechanism and the other end is connected with the elastic bending part, and the U-shaped thread holding fork is fixed at the end part of the elastic bending part.

3. The thread passing device for the posterior cruciate ligament reconstruction surgery as claimed in claim 1, wherein the front end of the thread passing sleeve is provided with a pre-bending part, the opening of the pre-bending part faces upwards, and two sides of the pre-bending part are provided with U-shaped thread clamping notches.

4. The thread passing device for the posterior cruciate ligament reconstruction surgery as claimed in claim 1, wherein the pushing mechanism comprises a push-pull slider and a linkage slider, the push-pull slider is fixedly connected with the linkage slider, the operating handle is provided with a sliding groove matched with the push-pull slider, indication scale marks are arranged on two sides of the sliding groove, the push-pull slider is attached to the sliding groove, a sliding cavity is arranged in the bottom of the sliding groove, the linkage slider is accommodated in the sliding cavity of the operating handle, and the end of the connecting rod penetrates into the operating handle and is fixedly connected with the linkage slider.

5. The thread passing device for the posterior cruciate ligament reconstruction surgery as recited in claim 4, wherein the sliding cavity is a convex sliding cavity, the bottom of the sliding cavity is an arc surface, the linkage slider is accommodated in the sliding cavity and has a shape matched with the shape of the sliding cavity, and the linkage slider can slide back and forth along the sliding cavity.

6. The thread guide for posterior cruciate ligament reconstruction surgery as claimed in claim 1, wherein the thread guide is a triangular prism structure, and the top of the thread guide is provided with a plurality of embedding holes.

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