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Ligament Fixation System Containing Suspension Plates and Absorbable Implants

A technology for implants and ligaments, applied in the direction of surgical fixation nails, nails, U-shaped nails, etc., can solve problems such as tendon fiber rupture, ligament reconstruction failure, wiper effect, etc., and achieve simple use, fast assembly, and increased contact area Effect

Active Publication Date: 2021-06-18
BEIJING WANJIE MEDICAL DEVICE CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

In addition, due to the influence of surgical deviation, the rear of the tibial tunnel tends to form an obvious acute angle ("killer turn"), resulting in stress concentration between the tendon graft and the tunnel opening at the rear of the tibia. Complete rupture, i.e., the "wiper effect" that causes ligament reconstruction to fail

Method used

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  • Ligament Fixation System Containing Suspension Plates and Absorbable Implants
  • Ligament Fixation System Containing Suspension Plates and Absorbable Implants
  • Ligament Fixation System Containing Suspension Plates and Absorbable Implants

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Embodiment Construction

[0040] As non-limiting embodiments, the following examples are only used to further describe the present invention in detail, and do not limit the scope of protection.

[0041] (1) Absorbable implants

[0042] Select polylactic acid as the raw material, and make implants with the following shapes, see figure 1 :

[0043] The implant 1 is cylindrical, and openings 11 parallel to the cylinder are distributed around the cylinder of the implant. The openings 11 are symmetrically arranged in a circular cross section, and the number of the openings is selected as 4 holes. The shape of the opening channel is circular. There is a square groove 12 below the implant. There is an arc-shaped groove 13 above the implant.

[0044] (2) Ligament fixation system comprising suspension plate and absorbable implant and method of use thereof

[0045] Option to secure with button plate. The connecting coil is made of polyethylene circular braid, and the polyethylene suspension wire is passed ...

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Abstract

The present invention relates to a ligament fixation system comprising a suspension plate and an absorbable implant and a method of use thereof. The ligament fixation system includes a suspension plate, an absorbable implant, a suspension wire, and a suture. The implant is cylindrical, with symmetrically distributed parallel openings around it, an arc-shaped groove forming a smooth connection with the ligament graft on the upper side, and a square groove convenient for suture fixing on the lower side. The implant increases the contact area between the ligament graft and the bone tunnel surface, hinders the penetration of joint fluid into the bone tunnel, effectively reduces the "wiper effect" and prevents the frictional fracture of the ligament graft. The use of absorbable materials facilitates true tendon‑bone healing. The ligament fixation system has wide sources of raw materials, is convenient to manufacture, is quick to assemble, and is simple to use, can simplify tendon treatment steps, shorten operation time, and significantly improve the firmness of ligament grafts.

Description

technical field [0001] The invention relates to the field of ligament repair surgery, in particular to an implant used for ligament reconstruction and its application method. Background technique [0002] Knee cruciate ligament (CL) injury is one of the common injuries of the knee joint in clinic. If CL injury is not treated in time, it will lead to knee joint instability and cartilage degeneration, which will affect the quality of life of patients. my country has a large population base, and the incidence of ligament injuries is high and increasing year by year. The market demand for ligament reconstruction is also very large. There are about 500,000 cases of anterior cruciate ligament injuries in China every year. Between 250,000 and 300,000 surgeries related to ligament injuries are performed annually in North America (United States and Canada). [0003] Ligament reconstruction methods can be divided into autologous tissue reconstruction, allogeneic tissue reconstruction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/04A61B17/064
CPCA61B17/0491A61B17/0642A61B17/0643A61B2017/0446A61B2017/0464
Inventor 张梅史丰田
Owner BEIJING WANJIE MEDICAL DEVICE CO LTD
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