Circular anastomat for clinical gastrointestinal surgery

Abstract

The invention provides a circular anastomat for clinical gastrointestinal surgery. The circular anastomat comprises a handle assembly, a gun body, a nail cartridge assembly and a nail propping seat assembly which are sequentially connected and arranged; the nail container assembly comprises a nail container housing, a circumferential cutting knife and a nail container; the nail container is in connection fitting with the circumferential cutting knife; the nail propping seat assembly comprises a nail propping seat, a central rod and a knife gasket; the nail container is in contact fitting with the nail propping seat; a nail container fitting surface and a nail propping seat fitting surface are respectively formed at the fitting parts of the nail container and the nail propping seat; the circumferential cutting knife is in contact fitting with the knife spacer; a circumferential cutting knife fitting surface and the knife gasket fitting surface are respectively formed at the fitting parts of the circumferential cutting knife and the knife gasket; the nail container fitting surface, the nail propping seat fitting surface, the circumferential cutting knife fitting surface and the knife gasket fitting surface are all the circumferential curved surfaces which are arranged in a convex and concave way in the circumferential direction. According to the circular anastomat for clinical gastrointestinal surgery, the circumference of the part in which the nail container assembly and the nail propping seat assembly is designed into a shape of a concave-convex curved surface, and therefore, anastomosis lines are in different level, and an anastomosis opening of an intestinal tube is telescopic, and as a result, the problem that the anastomosis opening is hardened and narrow to influence the smooth passing in the cavity and even lead to closing of the cavity can be avoided.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a tubular stapler for clinical gastrointestinal surgery. Background technique [0002] At present, in gastrointestinal surgery, the tubular stapler is widely used for its simple operation, accurate anastomosis, replacement of manual suture, and short duration. The working principle is the same as that of a stapler, that is, firing and implanting two rows of interlaced staples into the tissue to perform double-row cross-stitching of the tissue, completing the anastomosis of the cavity and restoring continuity. However, anastomotic stenosis often occurs, especially in patients with proximal fistula, and even closed anastomotic stoma, which brings difficulties to patients' rehabilitation and further diagnosis and treatment. At present, the anastomotic line of the stapler is on the same plane and has no flexibility, which may easily cause a bottleneck effect and cause th...

AI Technical Summary

Problems solved by technology

[0003] Based on this, in order to solve the problem that the anastomotic line of the above-mentioned stapler is in the same plane, fiber adhesion is prone to occur and cause the passage of the cavity to be blocked or even closed, the present invention provides a tubular stapler for clinical gastrointestinal surgery

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