Assisting-type co-rotating abdominal puncture dual cannula

Abstract

The invention discloses an assisting-type co-rotating abdominal puncture dual cannula, and the dual cannula is characterized in that an inner cannula is of a hollow tubular structure, wherein one endis provided with a conical tube, the surface is provided with a rotating thread, the central part is provided with a cylindrical tube, and the other end is provided with a circular cover; the centralpart of the circular cover is provided with a small circular hole, and the small circular hole is covered by an elastic sealing cap; an outer side of the circular cover is provided with butterfly leaves which extend symmetrically; the inner side of the circular cover of the inner cannula is provided with a multi-side bayonet which is fixedly buckled with a multi-side clamping board of an outer cannula; the outer cannula is of a hollow tubular structure, wherein one end of the outer cannula is a flat mouth end, and the outer side of the other end is provided with an outer cannula multi-side clamping board, and the center is provided with a big circular hole; the big circular hole is covered by an elastic sealing cap; the conical tube of the inner cannula passes through the elastic sealing cap of the outer cannula and is inserted through the big circular hole; the multi-side bayonet of the inner cannula is fixedly buckled with the multi-side clamping board of the outer cannula; a puncture cone passes through the elastic sealing cap of the inner cannula and the small circular hole to be inserted and passes through inner and outer cannulas; during the abdominal puncture, a puncture cone pedestal is pressed, and the butterfly leaf, extending outwards, of the inner cannulas is rotated to drive the outer cannula to rotate jointly to achieve the spiral-type stable puncture of an abdominal wall and to be planted in an abdominal cavity.

Description

Technical field [0001] The invention relates to a surgical auxiliary device, which safely establishes a large-caliber cannula passage at a small incision on the abdominal wall during laparoscopic surgery. Background technique [0002] Laparoscopic surgery is to perform small incisions on the abdominal wall. The small incisions in the abdominal wall are in a contracted and closed state in the natural state. In order to establish a large passage in the abdominal wall, it is sometimes necessary to use a large overtube to forcibly insert the small incision into the abdominal wall, due to the skin, subcutaneous fat and abdominal wall The muscles are rich in elasticity, so they can forcibly expand the small incision in the abdominal wall in a short time, that is, establish an unobstructed large channel in the abdominal wall that communicates with the abdominal cavity, so that large tissues or organs removed by laparoscopic surgery and large surgical instruments are safe Smoothly enter ...

AI Technical Summary

Problems solved by technology

However, the outer cannula is thick, and it is very laborious to puncture through the thick abdominal wall tissue in a small incision in the abdominal wall skin, and it is impossible to actively rotate the inner cannula at the front end of the puncture, and it is particularly laborious to rotate the outer cannula when pressing the puncture cone. , the inner cannula at the front end of the puncture does not follow the rotation, forcing the operator to use more force to rely on the force of vertical pressing to penetrate the abdominal cavity. Due to the lack of rotation, the puncture method mainly presents a dangerous "straight-forward" method, so it is inevitable that the force is large and difficult. Feel the "sense of hollowness" at the moment of entering the abdominal cavity, especially easy to lose control and directly penetrate into the abdominal cavity, seriously damaging organs and endangering the patient's life

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