A trocar for laparoscopic surgery

Abstract

The invention discloses a puncture device for endoscopic surgery, which comprises a puncture sleeve, a seal, a puncture rod assembly and an air intake assembly, the seal is made of silica gel containing self-lubricating agent, the puncture rod assembly includes a puncture A rod base and a puncture rod, the puncture rod is an equal-diameter rod body, and the tail end of the puncture rod is connected with the puncture rod base, the head end of the puncture rod shrinks into a polygonal pyramid, and the head of the puncture rod After the end passes through the seal, it is inserted into the puncture sleeve; the puncture rod is made of medical polymer materials containing acid amide lubricants, and the acid amide lubricants use oleic acid amide. The content of oleic acid amide is 1% of the total mass of the medical polymer material. The puncture device for laparoscopic surgery of the present invention has a combined improvement of the sealing member and the puncture rod assembly, and has a self-lubricating effect, so that the puncture rod and surgical instruments can smoothly enter and exit the puncture sleeve while ensuring the sealing performance of the sealing member Tube.

Description

technical field [0001] The invention relates to a puncture device for laparoscopic surgery, which is a laparoscope matching surgical instrument and is suitable for establishing a working channel during laparoscopic examination and operation. Background technique [0002] With the development of medicine and the improvement of people's health awareness, laparoscopic surgery is playing an increasingly important role in minimally invasive surgery due to its advantages of less trauma, faster recovery, less postoperative pain, and shorter hospital stay. The clinical application of minimally invasive surgery advocated is becoming more and more extensive. [0003] The principle of laparoscopic surgery is to use carbon dioxide gas to create an artificial pneumoperitoneum as an observation and operation space; use a puncture device to puncture several small holes of 0.5-1.0 cm in the abdominal wall to establish a channel between the abdominal cavity and the outside world; There are ...

AI Technical Summary

Problems solved by technology

When the puncture rod is in contact with the lubricating component, the sharp structure of the front part of the puncture rod will damage the medical elastic porous material, especially after the puncture rod or surgical instrument has been punctured many times, the damage is more serious. The broken porous material is prone to debris, and the debris enters the human body is dangerous

In addition, choosing medical silicone oil as a lubricant will cause the sealing components made of silicone material to dissolve with silicone oil, which will damage the sealing performance of the trocar

[0010] It can be seen that the above-mentioned disclosed patents do not solve the resistance problem well, and thus need to continue to improve

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