Absorbable gasket for high tibial osteotomy

Abstract

The invention discloses an absorbable gasket for high tibial osteotomy. The absorbable gasket is made of a biodegradable material, compact parts of the absorbable gasket comprises an arc-shaped fencelocated on the edge of the rear end of the absorbable gasket and a plurality of reinforcing ribs transversely fixed to the front end face of the fence at intervals, and the other ends of the reinforcing ribs extend to the front end of the absorbable gasket. The loose part of the absorbable gasket are made of porous biodegradable materials and filled between the compact parts to form an absorbablegasket body, and the barbs are distributed on the upper end face and the lower end face of the absorbable gasket in a protruding mode. According to the absorbable gasket, the tibial plateau of fracture and collapse is supported through cooperation of the ejector rod and the ejector block, the ejector rod moves forwards in the channel, and the ejector block can be ejected upwards in the sinking groove and protrudes out of the upper end face of the absorbable gasket under the cooperation effect of the second wedge-shaped top face and the first wedge-shaped top face so as to support the collapsepart; and the ejector rod is locked through the locking piece; therefore, the absorbable gasketis simple to operate and reliable in jacking.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an absorbable spacer for high tibial osteotomy. Background technique [0002] Knee osteoarthritis is a common senile degenerative disease based on uneven subsidence of the knee joint caused by osteoporosis. The main clinical manifestations include joint pain, deformity, stiffness, and dysfunction. [0003] According to the affected parts and scope of knee osteoarthritis, it can be divided into medial compartment type, lateral compartment type, patellofemoral type and total joint type. Among them, medial compartment type accounts for the majority of primary osteoarthritis. 74%. Patients with medial compartment knee osteoarthritis are often accompanied by changes in the alignment of the lower limbs and varus deformity, which seriously affect the quality of life. [0004] With the in-depth development of orthopedic treatment technology, studies have shown that the uneven m...

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Problems solved by technology

[0007] 1. Only through the bone growth hole to provide a channel for the growth and healing of new bone, the absorption and healing speed is slow;

[0008] 2. After the ejector rod lifts the fractured and collapsed tibial plateau, only the lateral barbs of the ejector rod prevent the ejector rod from moving with the penetrated tibia, and realize the support and fixation of the collapsed part. When fixing, the ejector rod penetrates When using the tibia, the setting of the barb will damage the tibia, so that the strength of the connection between the tibia and the barb hook is low, and only when the height of the ejector rod is high enough to expose enough barbs can it be connected with the penetrating tibial hook Therefore, the fixation method is not reliable, and there is a possibility of secondary collapse of the tibial plateau;

[0009] 3. Moreover, the solution to realize the multi-angle insertion of the ejector rod to lift different parts requires setting multiple channels with different angles with the upper plate surface of the gasket in the hole of the ejector rod. The process is complicated and the cost is high

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