A sealing assembly for a peritoneal puncture device

Abstract

The invention discloses a sealing assembly used in an enterocoelia puncturing device, and belongs to the field of a medical puncture instrument. The sealing assembly used in the enterocoelia puncturing device comprises an upper lid, a lower lid and an air-blocking valve, the air-blocking valve comprises a valve wall, and wavy elastic skirt hems are arranged at the periphery of the valve wall, the center of the valve wall is provided with an opening, the air-blocking valve is clamped between the upper lid and the lower lid through the peripheries of the elastic skirt hems, the valve wall is of an integral horn-shaped structure, and the slope of the horn-shaped valve wall is gradually decreased from the opening in the center of the valve wall to the periphery of the valve wall. In the sealing assembly used in the enterocoelia puncturing device, through the improvement of the air-blocking valve in the sealing assembly, the airtightness of the sealing assembly is made better, the capability of the air-blocking valve in resisting the deformation in the central normal direction is remarkably improved, the air-blocking valve is not easily turned up, and thus the air leakage risk of the air-blocking valve is sharply lowered; meanwhile, the sealing assembly is simple and compact in structure, the resistance to instruments is small, and thus the instruments are more flexible and convenient to operate.

Description

technical field [0001] The invention relates to a puncture instrument for laparoscopic surgery, and more particularly, relates to a sealing assembly for a laparoscopic puncture instrument. Background technique [0002] Paracentesis is a commonly used surgical instrument in abdominal puncture, mainly used to establish artificial pneumoperitoneum and instrument channel in laparoscopic surgery. In laparoscopic surgery, artificial pneumoperitoneum is the key to the success of the operation. It is necessary to establish an artificial pneumoperitoneum before the operation to separate the peritoneal wall from the organs for easy operation. The existing peritoneal puncture device is mainly composed of three parts: puncture needle, sealing valve and puncture sheath. Puncture from the human skin into the abdominal cavity, and establish artificial pneumoperitoneum through the gas injection valve on the puncture sheath; after the puncture needle is taken out, the surgical channel is co...

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies such as poor sealing performance, easy valgus of the choke valve, and strong sense of obstruction during instrument operation in the sealing assembly of the existing peritoneal puncture device, and provide a sealing assembly for the peritoneal puncture device, which adopts the technology of the present invention The solution, by improving the choke valve in the sealing assembly, not only makes the sealing performance of the sealing assembly better, but also significantly improves the deformation ability of the choke valve against the center normal direction, making it difficult for the choke valve to turn up, greatly reducing the The air leakage risk of the choke valve is eliminated; at the same time, the sealing assembly is simple and compact in structure, has little resistance to the device, and is more flexible and convenient to operate the device

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