A choke valve for paracentesis

Abstract

The invention discloses a choke valve used for an abdominocentesis device, and belongs to the field of medical abdominocentesis machinery. The choke valve comprises a valve wall, the wall valve is of an integral trumpet structure, the center of the valve wall is provided with an opening, and the slope of the valve wall gradually reduces to the periphery of the valve wall from an opening in the center of the valve wall; several wrinkles which expend to the periphery of the valve wall from the center of the valve wall are distributed evenly on the valve wall, and are composed of convex ribs arranged at the inner side of the valve wall and grooves formed in the outer side of the valve wall, and the positions and sizes of convex ribs correspond to those of the grooves; a sealing lip on the opening in the center of the valve wall is provided with a trumpet shaped outward turned structure, and several small convex ribs which extend along the center axial line of the sealing lip are evenly distributed on the trumpet shaped outward turned structure. According to the choke valve used for the abdominocentesis device, not only is the sealing performance of the choke valve better, but also the capacity for the sealing valve to resist deformation in the center normal direction is improved, so that the choke valve does not easily turn upward, and the air leakage risk of the choke valve is lowered; moreover, when the machine is inserted or drawn out, the resistance of the choke valve to the machinery is small, and the operation is more flexible and more convenient.

Description

technical field [0001] The present invention relates to a sealing member, and more particularly, to a choke valve for a paracentesis. 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 composed of the sealing valve and the puncture sheath, an...

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to overcome the deficiencies such as poor sealing performance, easy to be pulled out with the instrument, and strong sense of obstruction during instrument operation in the gas choke valve of the existing peritoneal puncture device, and to provide a gas choke valve for the peritoneal puncture device, which adopts the present invention The technical scheme of the choke valve, through the improvement of the structure of the choke valve, not only makes the sealing performance of the choke valve better, but also significantly improves the deformation ability of the sealing valve against the direction of the center normal line, making the choke valve difficult to turn up, greatly reducing the The air leakage risk of the choke valve; and when the device is inserted or withdrawn from the choke valve, the resistance of the choke valve to the device is small, and the operation is more flexible and convenient

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