Guide leakage-proof check valve

Abstract

The invention discloses a guide leakage-proof check valve, which comprises a valve body and a valve element; the valve element is embedded in the valve body; the valve body is of a hollow cavity structure; an annular clamping groove is formed in the inner side of the upper portion of the valve body; a guide hole is formed in the lower portion of the valve body; the valve element is of a cavity structure with a horn-shaped guide hole embedded in the top; the lower portion of the guide hole extends to be provided with an annular flange with a V-shaped section; the valve element comprises a guide cavity and a valve clack; the guide cavity is vertically formed in the valve element; the valve clack is arranged on the lower portion of the guide cavity; a locking and sealing device is arranged on the outer side of the annular flange; an inverted cone structure is arranged on the edge of the valve clack; and the valve clack and the guide cavity form a sealing structure capable of being opened and closed. The guide leakage-proof check valve disclosed by the invention is simple in structure, convenient to use, safe, reliable, low in production cost and relatively high in popularization value.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a guiding leak-proof check valve. Background technique [0002] The pilot anti-leakage check valve is a pipeline valve widely used in medical pipeline systems to connect with fluid devices to prevent leakage and medium backflow. It functions as an access port and a seal through the pilot port. The inner cavity of the valve core, when the catheter accesses the valve core, it plays a sealing function to prevent liquid or gas from leaking when the guide tube opens the valve core. Return function, any liquid or gas in the valve assembly does not flow outward. [0003] In the prior art, the guide leak-proof check valve used is complex in structure and inconvenient to use, such as in the laparoscopic instrument sealing sheath, the laparoscopic instrument sealing sheath is a medical instrument that provides instrument passage for abdominal and pelvic minimally invasive surg...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the guide leak-proof check valve used is complex in structure and inconvenient to use, such as in the laparoscopic instrument sealing sheath, the laparoscopic instrument sealing sheath is a medical instrument that provides instrument passage for abdominal and pelvic minimally invasive surgery. It is suitable for various minimally invasive surgical operations, and has incomparable advantages compared with traditional puncture instruments. It is equipped with anti-leakage one-way valve, handle, balloon tube interface, cannula, thread and valve to prevent air leakage. The right side below the one-way valve is bonded with a handle, and the left side below the anti-leakage one-way valve is provided with an airbag tube interface. The bottom of the anti-leakage one-way valve is connected to the casing, but the access port of the device is Including a first sealing valve and a second sealing valve to introduce medical devices into various internal areas of the patient's body, in this case, the medical channel must allow the introduction of medical devices while preventing pressurized gas, liquid from escaping, in Access port anti-leakage one-way valve, the first sealing valve adopts V-shaped through-hole sheet to realize the first sealing, and the second sealing valve adopts duckbill or cross shape to realize the second sealing, which is extremely inconvenient to disassemble and replace , the cost of use is high, and it cannot meet the current surgical needs

Images