Laparoscope casing

Abstract

The invention discloses a laparoscope casing. The laparoscope casing includes a casing body and a diameter changing mechanism which is arranged on the periphery of the casing body, the diameter changing mechanism includes an expansion part and a push-rod part, the expansion part includes a fixed ring, a sliding ring and a plurality of ribs, the ribs are arranged between the fixed ring and the sliding ring, the ribs are connected with the fixed ring and the sliding ring in a hinged mode, the fixed ring is fixed at the front end of the casing body, the sliding ring is connected with the push-rod part, and the sliding ring is driven by the push-rod part to slide along the periphery of the casing body to achieve expanding or shrinking of the ribs. The ribs are bendable ribs or two-or-more-section collapsible ribs. After the laparoscope casing is inserted into a body, the push-rod part is pushed to make the diameter changing mechanism expanded, a lantern-shaped expansion part or an inverted-cone-shaped platform expansion part is formed, and through the limiting and clamping of the push-rod part, automatic retraction of the expansion part can be avoided, so that the purpose is achieved that the laparoscope casing cannot slip out of the body. The laparoscope casing is of an integrated structure, external devices are not needed, a single person can conduct operation, and the laparoscope casing is convenient and practical.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a laparoscopic sleeve. Background technique [0002] At present, laparoscopic sleeves are widely used clinically. In surgical operations, laparoscopic sleeves partly enter the human body as a channel connecting the inside and outside of the body. for treatment. However, the existing laparoscopic cannula is not firmly connected after being inserted into the human body, and it is easy to escape from the human body during the operation, causing serious adverse consequences and bringing pain to the patient. [0003] There is also a balloon-type laparoscopic sleeve in the prior art, but the balloon-type laparoscopic sleeve has the following disadvantages: 1) The inflatable bag and the outer sleeve cannot be tightly fitted, which will increase the total lumen diameter, resulting in increased abdominal wall damage and the incidence of postoperative complications such as incisional h...

AI Technical Summary

Problems solved by technology

However, the existing laparoscopic cannula is not firmly connected after being inserted into the human body, and it is easy to come out of the human body during the operation, causing serious adverse consequences and bringing pain to the patient.

[0003] There is also a balloon-type laparoscopic sleeve in the prior art, but the balloon-type laparoscopic sleeve has the following disadvantages: 1) The inflatable bag and the outer sleeve cannot be tightly fitted, which will increase the total lumen diameter, resulting in increased abdominal wall damage and postoperative complications such as incisional hernia; 2) The airbag is mostly made of rubber, which cannot be sterilized at high temperature, and the airbag has poor compression resistance and is easy to be damaged. In addition, sometimes when the pneumoperitoneum pressure is not satisfactory, the abdominal wall needs to be properly lifted by hand, and the air bag’s anti-compression capacity is limited at this time; 4) Additional equipment such as syringes are required to achieve the anti-slip function, which is cumbersome to operate; 5) Due to the use of electrical equipment in endoscopic surgery, water mist is often formed in the cavity, and the air bag is a spherical surface, which is easily attached by water mist to form water droplets and pollute the mirror surface

[0004] This shows that above-mentioned existing laparoscopic cannula obviously still has inconvenience and defect in structure, method and use, and urgently needs to be further improved

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