A fixation system for ligament reconstruction

A fixation system and ligament reconstruction technology, applied in the field of medical devices, can solve problems such as poor tendon-bone healing, bone canal expansion, tendon loosening, tunnel expansion, etc., to reduce the possibility of surgical failure, reduce the difficulty of fixation, and overcome the bungee effect Effect

Active Publication Date: 2019-07-05
SHANGHAI KINETIC MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, for the above-mentioned suspension fixation methods and devices, with the movement of the knee joint, phenomena such as tendon loosening and tunnel expansion will still occur after reconstruction surgery, and the wiper effect (sagittal displacement of the graft relative to the bone tunnel) will easily occur. and bungee effect (longitudinal displacement of the graft relative to the bone tunnel), leading to bone tunnel enlargement or poor tendon-bone union, these phenomena have brought new challenges to ACL reconstruction of the knee

Method used

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  • A fixation system for ligament reconstruction
  • A fixation system for ligament reconstruction
  • A fixation system for ligament reconstruction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The fixation system for ligament reconstruction provided in this embodiment includes: a suture plate, a screw, a coil, a traction line, and a turnover line. For the illustration of the suture plate, please refer to figure 2 , The suture board is provided with four holes, the middle two holes are used to pierce and fix the coil, which are called coil holes, and the two holes on both sides are respectively used to pierce the pulling line and the turning line , Respectively called the traction hole and the turning line, the two holes on both sides are threaded holes. The screws in this embodiment can be selected from one or more of interface screws, tying screws or fixing screws, and the driving part of the screws can be hexagonal, plum blossom or reinforced plum blossom.

[0048] The coil in this embodiment is made of ultra-high molecular weight polyethylene UHMWPE yarn, the suture plate is made of TC4ELI titanium alloy material, length: 12mm, and the pulling wire is made of...

Embodiment 2

[0050] Compared with Embodiment 1, in this embodiment, door-shaped nails are used instead of screws. At this time, the holes on the suture plate do not need to be threaded holes. The door-shaped nails can be made of TC4ELI titanium alloy. The two feet of the door-shaped nail pass through two holes on both sides to fix the suture plate on the target.

Embodiment 3

[0052] Compared with Embodiment 1, the screw in this embodiment is a universal screw, and at the same time, the holes on both sides of the suture plate are provided with universal threaded sleeves 3. The suture plate is called a threaded universal type Suture board. Please refer to the illustration of the suture board in this embodiment image 3 . Due to the different sizes of human femurs, it may be encountered that the implantation of the interface nail perpendicular to the direction of the suture plate may cause the unilateral femur to be too thin and cause the femur to burst or squeeze through. Therefore, this implementation is provided. Example of suture plate and universal screw.

[0053] The universal threaded sleeve includes the following structure:

[0054] Outer hole 31;

[0055] A hollow cylinder 32 is arranged inside the outer hole 31, the hollow cylinder 32 has a cavity 33 that fits the universal screw; and the middle of the hollow cylinder 32 is arranged in a directi...

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Abstract

The invention discloses a fixing system for ligament reconstruction. The fixing system comprises a coil, a suture plate, a pull line and a turnover line. The suture plate is provided with multiple holes for penetrating through and fixing the coil and penetrating through the pull line and the turnover line. The fixing system further comprises multiple screws and / or n-shaped nails for passing through at least several holes in the holes in the suture plate to fix the suture plate to a target. According to the fixing system, based on conventional suspension type fixation, fixation of the holes of the suture plate, especially pull holes and turnover holes in the two sides is added, therefore, the bungee jumping effect and windshield wiper effect caused by infirm fixation of transplanted tendons are overcome, the suture plate can achieve self-tapping performance and universality by selecting different screws, and the fixing difficulty in the operation operating process and the probability of failure of an operation can be reduced; design types of the suture plate are added, the fixing system is more user-friendly, and the fixing system adapts to multiple use situations.

Description

Technical field [0001] The invention relates to the technical field of medical devices, in particular to a fixing system for ligament reconstruction. Background technique [0002] The ligament is an important structure for maintaining joint stability. For example, the anterior cruciate ligament is an important anterior stable structure of the knee joint. Its main function is to limit the excessive forward displacement of the tibia. It works together with other structures in the knee joint to maintain the knee joint. Stability enables the human body to complete various complex and difficult lower limb movements. Injury and rupture of the anterior cruciate ligament can produce obvious knee instability, which will seriously affect the function of the knee joint. If it is not treated in time, the joint will be sprained repeatedly, which will easily cause damage to the articular cartilage, meniscus and other important structures, leading to premature aging of the joint And the occurr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/04
CPCA61B17/0401A61B2017/0414A61B2017/044A61B2017/0464
Inventor 祁超温潇溢孙璞
Owner SHANGHAI KINETIC MEDICAL
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