Fully-separable puncture outfit

Abstract

The invention discloses a fully-separable puncture outfit. The fully-separable puncture outfit comprises a catheter and a support connected with one end of the catheter, the catheter and the support are provided with an axial through channel used for guiding an instrument, the support is provided an inflation structure communicated with the channel and an air valve used for controlling start and stop of the inflation structure. The air valve comprises a first sealing component and a second sealing component, wherein the first sealing component is used for sealing during use of the instrument, and the second sealing component is used for sealing when the instrument is not used. The first sealing component, the second sealing component and the support are sequentially and hermetically connected from top to bottom. The first sealing component and the second sealing component as well as the second sealing component and the support are separable independently. The fully-separable puncture outfit can provide many sample takeout modes, is applicable to various surgical occasions, and has multiple-sealing structure, so that air leak can be effectively prevented. Deflation can be quickly realized, and surgical operation time is saved; the puncture outfit can be fixed better, looseness of the puncture outfit during operation is prevented and medical staff is facilitated.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a trocar. Background technique [0002] The puncture device is a common tool in laparoscopic surgery. During the operation, an inflatable needle is first inserted into the patient's umbilical area, and gas is injected into the abdominal cavity at the same time to expand the abdominal cavity space, and then the puncture device is inserted into the abdominal cavity to form a channel. , to facilitate the operation of the operation, the importance of air tightness in this process is obvious. In order to ensure that the gas in the patient's abdomen will not leak during the operation, the existing puncture devices are equipped with a sealing structure, which includes a sealing sheet for sealing when there are surgical instruments and a non-return piece for when there is no surgical instrument. There are following deficiencies in the puncture device in the technology: [0003] 1. Th...

AI Technical Summary

Problems solved by technology

[0003] 1. There are openings on both the sealing sheet and the non-reverse piece. Due to their different functions, the sizes of the openings are also inconsistent. Generally, in order to better cover the surgical equipment, the opening on the sealing sheet should be smaller than the opening on the non-reverse piece. , and in the prior art, the sealing piece and the anti-reverse piece are integrated into one body, and the two cannot be separated relatively independently. When a larger specimen needs to be taken out, if the sealing structure is removed, although the specimen can be taken out, it will cause Gas leakage; if the sealing structure is kept, even if it can pass through the non-reverse piece, it will be stuck by the sealing sheet, and can only be taken out again after being divided in the abdominal cavity, which seriously affects the operation efficiency and increases the difficulty of operation

[0004] 2. The opening of the sealing sheet is a round hole type, and its insertion resistance is relatively large, and the recovery speed of the round hole after the surgical instrument is pulled out is slow, and it is easy to leak air when a small-sized instrument is inserted.

[0005] 3. There are only one-way barbs on the outer wall of the catheter, which may drive the catheter out of the human body during the process of pulling out the device

[0006] 4. The puncture knives in the prior art are all made of visible plastic knife heads bonded to stainless steel knife rods, which are prone to breakage during use

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