laparoscopic sheath

Abstract

The invention discloses a sheath catheter, particularly discloses a laparoscope sheath catheter and belongs to the technical field of design and manufacturing of medical instruments. The laparoscope sheath catheter is convenient to operate and simple in structure and can play a better role in sealing in the using process. The laparoscope sheath catheter comprises a sheath catheter body and further comprises a leakproof shrink-ring comprising a stretching device, the outer side wall of the middle of the sheath catheter body is provided with an installation groove extending in the circumferential direction, and the leakproof shrink-ring is arranged inside the installation groove. The laparoscope sheath catheter is inserted into the abdominal cavity of a patient from a wound of the abdominal cavity of the patient, the stretching device stretches the leakproof shrink-ring to axially move out of the installation groove along the sheath catheter body, and then an interval between the laparoscope sheath catheter and the wound of the abdominal cavity of the patient is closed.

Description

technical field [0001] The invention relates to a sheath tube, in particular to a laparoscopic sheath tube, and belongs to the technical field of medical device design and manufacture. Background technique [0002] At present, laparoscopic technology is being rapidly popularized and applied in hospitals at all levels because of its minimally invasive, effective and beautiful incisions. However, this technology needs to inject gas into the abdominal cavity to form pneumoperitoneum. At present, the abdominal wall channel sheath, which is commonly known as trocar in this field, has achieved airtightness in the tube through the built-in one-way baffle and silicone ring, but the problem of air leakage between the outer side of the sheath tube and the patient's body wall channel, and the The problem of easy exit from the patient's abdominal wound during the operation has not been effectively solved. [0003] There are several similar solutions in the prior art as follows: One is ...

AI Technical Summary

Problems solved by technology

Its disadvantages are that on the one hand, it will be laborious to squeeze the silicone sleeve into the skin, and the leaked gas accumulated under the silicone cap pad may make it unable to achieve a tight fit with the skin; on the other hand, the skin wound will be expanded by the silicone sleeve after surgery. large, beautiful

The other is the anti-leakage device designed by Qin Weijun with the application number of 200620078426.X. This device is to set an air bag near the middle of the trocar tube body. Although it can indeed realize the anti-leakage and fixation of the trocar tube body, our We know that when the trocar tube is inserted into the patient's body wall, the outer surface needs to be as smooth as possible to make it easier to insert. The airbag design that is higher than the tube will definitely hinder the smooth insertion of the trocar tube, and it will be difficult to pull out the trocar after surgery.

There is also an anti-leakage device with the application number 201320344949.4 designed by Yu Shengqian. This device still has the problem that when the leaked gas accumulates under the sealing plate, the sealing plate is not easy to be tightly attached to the skin, resulting in a tight seal. fail

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