Apparatus and method for forming unidirectional or bidirectional barbs on suture

Abstract

The invention discloses an apparatus for forming unidirectional or bidirectional barbs on a suture. The apparatus comprises a thread supply assembly which is used for providing a suture raw material thread and positioning the suture; a cutting mechanism which is used for forming unidirectional or bidirectional barbs on the suture raw material thread; a turning-over mechanism which is used for adjusting a circumferential angle of the cutting mechanism; and a finished wire removal mechanism which is used for removing the processed wire. By adopting the apparatus, a suture product with unidirectional or bidirectional barbs can be quickly and accurately obtained through the cutting mechanism; and the processing of barbs at different circumferential positions can be realized through the turning-over mechanism, and thereby a suture product with various barb layouts can be quickly and efficiently obtained. When the apparatus performs barb processing on the suture, the cutting mechanism is mainly moved, and the suture is only used for axial micro-movement, so that the processing accuracy is easier to control. A cutting depth of a blade can be accurately controlled by a linear drive assembly, and at the same time the processing of barbs with different depths can be realized.

Description

technical field [0001] The invention designs a device for processing sutures, and in particular relates to a device for forming one-way or two-way barbs on the sutures. Background technique [0002] Suture thread is widely used in the suturing of the wound of operation and trauma, and one end of suture thread is tied on the surgical needle, and surgical needle pulls suture thread through tissue to make wound suturing and tissue fixed connection together to heal and regenerate, and at present Most sutures need to be tied with one or more knots to fix the sutures. Knotting increases the operation time and has a serious impact on some operations. For cosmetic surgery, laparoscopy and endoscopic examination, general sutures are difficult competent. [0003] The unidirectional barbed suture has multiple axially spaced barbs in a single direction on the outside of the suture. The surgical needle pulls the unidirectional barbed suture through the tissue in one direction, but the t...

AI Technical Summary

Problems solved by technology

[0005] The existing method of forming barbs on sutures has low cutting efficiency, and most of them adopt a roller routing structure. The rollers press over the barbs, resulting in deformation of the cut barbs, which affects product quality. Pneumatic cutting devices are used. The structure and cutting depth cannot be guaranteed, and the product quality cannot be guaranteed; most of the moving mechanisms of the existing equipment need to be oiled, and the grease will be thrown onto the wire during the movement, which will affect the quality of the wire; the cutting angle and cutting depth of the existing equipment are difficult to adjust, and most of them only One type of wire can be produced, but stability and diversity are difficult to guarantee, so a device that is more efficient, capable of producing multiple types, and economically forming one-way or two-way barbs is needed

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