Partially absorbable composite mesh for restoration of rotator cuff and production method thereof

Abstract

The invention provides a partially absorbable composite mesh for restoration of a rotator cuff. The composite mesh comprises a knitted body, the knitted body comprises one or multiple knitted units, the knitted units are stacked in the thickness extending direction to form a supporting base layer and absorbable layers; the absorbable layers are arranged on one end surface or both end surfaces of the supporting base layer in the thickness extending direction; the supporting base layer is made from a non-degradable material, and the absorbable layers are made from a degradable material. The invention further provides a production method of the partially absorbable composite mesh for restoration of the rotator cuff. The partially absorbable composite mesh for restoration of the rotator cuff has high initial fixing strength, meanwhile the rotator cuff is closely combined with a humerus by means of the composite mesh, and a gap is reduced; moreover, with gradual degradation of collagen, connective tissue of a human body gradually grows into micropores of the mesh to form an integral structure, and healing of the rotator cuff is accelerated.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a partially absorbable composite patch for rotator cuff repair and a manufacturing method. Background technique [0002] Rotator cuff injury is a common injury of the shoulder joint. Patients often suffer from shoulder pain and limited mobility after a certain trauma. The main symptoms of rotator cuff injury are: pain on the outside of the shoulder, which can radiate to the neck and upper arm; shoulder abduction , or doing the whipping action of the shoulder from external rotation to internal rotation, the pain will be aggravated; when the shoulder is externally rotated and abducted to resist, the shoulder will also experience obvious pain; shrinking. In the normal population, rotator cuff injuries account for 5% to 40% of shoulder joint disorders, and 17% to 41% in people over 60 years old. [0003] At present, there are single and double rows of threaded anchors and perforated ...

AI Technical Summary

Problems solved by technology

However, when the patient has anterosuperior instability of the shoulder joint or a large rotator cuff injury, the effect is not very satisfactory in terms of pain and function.

Although rotator cuff repair techniques have been significantly improved, there is still a re-tear rate of 38% to 94% after surgery, especially in degenerative rotator cuff injuries with a low degree of tendon-bone healing

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