Single-hole multi-channel laparoscopic surgical sheath

Abstract

The invention belongs to the field of medical instrument, and relates to a transumbilical single-site multichannel laparoscopic surgery sheath. The transumbilical single-site multichannel laparoscopic surgery sheath is composed of a top cover, an inner cannula, a snap ring, and an outer cannula; the top cover is composed of four double-layer single-way flapper-type working channels, a turn-lock clasp, and a silica gel elastic membrane; the top part of the inner cannula is provided with a rotation clamping groove; a gas inlet and a gas outlet are arranged below the rotation clamping groove; the opening of the gas inlet is arranged on the lower edge of the inner cannula via a gas inlet pipe passing through the inner cannula wall; the inner cannula wall is penetrated by the gas outlet; the inner cannula, the snap ring, and the outer cannula are rotatingly connected; the bottom of the outer cannula is provided with a circular air bag; a circular air bag breather pipe passes through the outer cannula wall, is stretched out from the outer cannula wall via the top part, and is connected with a free air bag gas injection valve; in application, the connection length of the inner cannula and the outer cannula can be adjusted based on the abdominal wall thickness, after gas injection, the circular air bag is stunk in a surgery channel inner opening, and then in vitro, the snap ring is used for clamping the abdominal wall. The transumbilical single-site multichannel laparoscopic surgery sheath is simple in structure; cannula length is adjustable; air impermeability is extremely high; operation is convenient; and laparoendoscopic single-site surgery efficiency is increased.

Description

technical field [0001] The invention relates to the field of medical instruments, and relates to a single-hole multi-channel surgical sheath for transumbilical single-hole laparoscopic surgery. Background technique [0002] At present, laparoscopic technology has been widely used in clinical surgery. Conventional laparoscopic techniques usually require 3 to 5 holes with a diameter of 5 to 12 mm to be drilled in the abdominal wall, and sleeves are placed in the holes, and the sleeves are used to insert endoscopes and various surgical instruments for surgery. However, such an operation method will leave many scattered scars, which will affect the appearance. Therefore, in recent years, transumbilical single-port laparoscopic surgery has emerged at home and abroad, using the natural scar of the umbilicus as an incision to establish a surgical channel. It has been confirmed that the surgical effect is consistent with conventional laparoscopic surgery, and except for the natural...

AI Technical Summary

Problems solved by technology

The surgical sheaths currently in clinical use have the following deficiencies: 1. The soft channel composed of an elastic ring and a flexible film is limited by its material, which has insufficient support for the abdominal wall, cannot make full use of the incision, and the single-hole channel is too small , it is inconvenient for the equipment to enter and exit, and the operating angle is limited

2. Most of the outer part of the surgical sheath is not designed with a reliable structure to make the sheath closely fit the abdominal wall, and the airtightness is defective

In some designs, the external part is closed with an air bag, which has the disadvantages of insufficient strength and too much volume

3. Most hard surgical sheaths with or without elasticity cannot flexibly adjust the length of the sheath according to the thickness of the patient’s abdominal wall. This defect can only be solved by preparing surgical sheaths of different specifications in advance, but different specifications only It can reduce the error, but it cannot completely match the abdominal wall thickness of different individuals

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