Ligament fixation system comprising suspensory steel plate and absorbable implant

An implant and ligament technology, applied in surgical fixation nails, connecting members, nails, etc., can solve the problems of tendon fiber rupture, ligament reconstruction failure, stress concentration, etc., and achieve the effects of simple use, quick assembly, and reduced shear stress.

Active Publication Date: 2018-06-29
BEIJING WANJIE MEDICAL DEVICE CO LTD
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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 comprising suspensory steel plate and absorbable implant
  • Ligament fixation system comprising suspensory steel plate and absorbable implant
  • Ligament fixation system comprising suspensory steel plate and absorbable implant

Examples

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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 invention relates to a ligament fixation system comprising a suspensory steel plate and an absorbable implant and an application method of the system. The ligament fixation system includes the suspensory steel plate, the absorbable implant, a suspensory thread and a suture. The implant is in a cylindrical shape, parallel open pore passages are symmetrically distributed in the periphery of theimplant, an arc-shaped groove smoothly connected with a ligament graft is formed in the top of the implant, and a square groove for facilitating suture fixation is formed in the bottom of the implant.The implant makes the contact area of the ligament graft and the surface of a bone tunnel increased, prevents synovial fluid from permeating into the bone tunnel, effectively reduces the occurrence of a 'windshield wiper' effect, and prevents friction and breakage of the ligament graft. The application of the absorbable material is beneficial to achieving true tendon-bone healing. The ligament fixation system has wide raw material sources, and is convenient to manufacture, fast to assemble and easy to use, the tendon processing steps can be simplified, the operation time can be shortened, andthe firmness of the ligament graft can be significantly improved.

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 Applications(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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