a piercer

Abstract

A puncture device comprises a puncture rod (1) for causing a perforation, a sheath assembly (2) sleeved on the outer side of the puncture rod (1) as a surgical channel, and an exhaust vent (211), wherein the sheath assembly (2) comprises an inner tube (22) and an outer tube (21) sleeved on the outer side of the inner tube (22) to form an interlayer, the thiner end of the inner tube (22) is provided with an opening (221), a smoke exhaust passage (23) is arranged in the interlayer and communicates the opening (221) with the exhaust vent (211). Smoke is discharged out of the surgical space at the same time when air enters the surgical space, so that the lens blur caused by the smoke can be eliminated to avoid affecting the sight of medical staff, and improve the surgical efficiency. Meanwhile, the airbag sealing structure has an ingenious design with reliable sealing for surgical instruments of different sizes, and the product is safe in clinical use.

Description

technical field [0001] The invention relates to the medical field, in particular to a trocar. Background technique [0002] Disposable puncture device is an important instrument in laparoscopic surgery. It is a supporting surgical instrument for external thoracic and external laparoscopy. . With the development of imaging technology and camera technology, minimally invasive surgical methods represented by laparoscopic surgery have developed rapidly in recent years, especially in gynecology, general surgery and other operations involving the abdominal cavity, which are gradually changing from open to intracavitary surgery. minimally invasive surgery. In laparoscopic surgery, 2 to 5 puncture holes are generally used, one for placing the laparoscope, and the rest for placing surgical instruments. The outer diameter of surgical instruments is roughly divided into 5mm, 10mm, 12mm, 15mm, etc. It is equipped with a suitable inner diameter puncture cannula to avoid pneumoperitone...

AI Technical Summary

Problems solved by technology

In laparoscopic surgery, 2 to 5 puncture holes are generally used, one for placing the laparoscope, and the rest for placing surgical instruments. The outer diameter of surgical instruments is roughly divided into 5mm, 10mm, 12mm, 15mm, etc. Matching matching inner diameter puncture cannula to avoid pneumoperitoneum leakage and affect the operation

[0003] In clinical medical treatment, when the electric knife in the trocar burns or electrocoagulates human tissue, it will inevitably produce a large amount of smoke and water vapor. The smoke produced by the combustion of this organic matter is a strong carcinogen, which will harm the operator and The medical staff in the operating room cause unnecessary injuries, and when performing deep operations on the human body, especially when electrocauterying deep blood vessels and other important organs, the smoke will blur the electron microscope inside, affecting the sight of the medical staff, causing difficulty in hemostasis, and even Cause blindness or hectic operation, so a smoke removal device is needed to ensure the smooth operation

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