Staple cartridges for surgical instruments and surgical instruments

Abstract

The invention relates to a staple cartridge for a surgical instrument and the surgical instrument. The staple cartridge for the surgical instrument comprises a staple cartridge body and staples arranged in the staple cartridge body. The staple cartridge body is provided with a plurality of staple cavities, each stapler cavity is provided with an inner cavity surface, the inner cavity surface comprises two vertical faces which are perpendicular to the longitudinal axis of a nail outlet and are arranged in an opposite manner, the staples are arranged in the staple cavities, each staple is provided with a deformable extension rod, the extension rod is abutted against the vertical faces and can move relative to the vertical faces, the top end surface is provided with the nail outlet, the staple cavities penetrate through the top end surface to form the nail outlet, the top end surface is provided with protruding parts surrounding the staple outlet, each protruding part is provided with an inner surface, the inner surface comprises two transverse faces perpendicular to the longitudinal axis of the nail outlet and are arranged in an opposite manner, each transverse face corresponds to a vertical face, each transverse face is parallel to the vertical face corresponding to the traverse face, and the vertical face and the corresponding traverse face are at the same side.

Description

technical field [0001] The invention relates to a nail cartridge for surgical instruments and the surgical instruments. Background technique [0002] Surgical instruments are surgical tools in medical operations, and suture instruments are a kind of surgical instruments. They are used in medicine to replace manual suture equipment. The main working principle is to use titanium nails to separate or anastomose tissues, similar to ordering book machine. According to the scope of application, it can be divided into skin staplers, digestive tract (esophagus, gastrointestinal, etc.) circular staplers, rectal staplers, circular hemorrhoid staplers, circumcision staplers, blood vessel staplers, hernia staplers , Lung cutting stapler, etc. The suturing instrument includes a pair of cooperating elongate jaw members, the jaw members are adapted to be inserted into the body of a patient to suture and / or cut tissue, and the jaw members are capable of supporting and receiving a staple c...

AI Technical Summary

Problems solved by technology

However, the existing suturing instruments generally have the following problems when suturing. When the jaws clamp the tissue to be sutured, due to the external force generated when the instrument operator shakes or the blade is pushed, the tissue to be sutured often clamped by the jaws Displacement occurs, which affects the suture effect

In view of this problem, Chinese patent application No. 201180047031.7 discloses a staple cartridge, the top surface of the staple cartridge is provided with a ridge, and the ridge surrounds the proximal and distal ends of the nail outlet on the top surface. Although this design It can solve the phenomenon of displacement of the sutured tissue, but because the ridge surrounds the proximal end and the distal end of the nail outlet on the top surface, and this structure, the nail cartridge cannot be avoided during the preparation process. There are burrs at the joint between the nail mouth and the ridge, which affects the nailing effect, that is, when the nail is unloaded, the nailing resistance at the joint between the nail mouth and the ridge is large

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