Absorbable composite patch for rotator cuff repair and manufacturing method

Abstract

The invention provides an absorbable composite patch for rotator cuff repair. The absorbable composite patch comprises a woven body, the woven body comprises one or more weaving units, and each weaving unit forms a supporting base layer and an absorbable layer in a thickness extension direction by stacking. Each absorbable layer is disposed on one end surface or both end surface of the two end surfaces of each supporting base layer in the thickness extension direction. Both the supporting base layer and the absorbable layer are made of degradable materials. Correspondingly, the invention alsoprovides a method for manufacturing the absorbable composite patch for rotator cuff repair. The absorbable composite patch has higher initial fixation strength and can simultaneously tightly integratea rotator cuff and a humerus head and reduce the gap; moreover, as collagen is gradually degraded, human body's self connective tissue gradually grows into patch micropores to form an integrated structure and to speed up the healing of the rotator cuff.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an 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 bone sutu...

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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