Self-closing air bag expander for back abdominal cavity
A self-sealing and dilator technology, which is applied in the field of medical devices, can solve the problems of cumbersome operation and achieve the effect of simple operation, convenient intraoperative operation and improved effect
Inactive Publication Date: 2015-03-11
HENAN UNIV OF SCI & TECH
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Problems solved by technology
There are often the following problems: the operation is cumbersome, and two people must cooperate. One person uses the needle tube to repeatedly inject gas, and the other person must use hemostatic forceps to repeatedly clamp the urinary catheter to prevent air leakage
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[0016] As shown in the figure: a self-sealing retroperitoneal balloon dilator, including a ventilation tube 1 and an expansion balloon 2, one end of the ventilation tube 1 is open to the expansion balloon 2, and the other end of the ventilation tube 1 is connected to the air source. The dilator also includes a self-sealing device, and the self-sealing device is arranged in the ventilation tube 1 at a position close to the expansion air bag 2;
[0017] Described self-sealing device is made up of one-way air intake valve 3, fixed shaft 4, pull bar 5 and pull wire 6, and one-way air intake valve 3 is arranged in vent pipe 1, and fixed shaft 4 is arranged on one-way air inlet valve 3 and Between the expansion airbags 2, both ends of the fixed shaft 4 are fixedly embedded in the inner wall of the ventilation tube 1; the fixed shaft 4 is set through the pull rod 5, and the pull rod 5 can rotate around the fixed shaft 4, and the pull rod 5 corresponds to the expansion ball One end of...
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The invention relates to a self-closing air bag expander for a back abdominal cavity. The self-closing air bag expander comprises a vent pipe and an expansion air bag and further comprises a self-closing device composed of a one-way air inlet valve, a fixed shaft, a pull rod and a pull thread. The one-way air inlet valve is arranged in the vent pipe, the fixed shaft is arranged between the one-way air inlet valve and the expansion air bag, the pull rod penetrates the fixed shaft to be arranged and can rotate around the fixed shaft, one end of the pull rod corresponding to the expansion air bag is connected with the pull thread, a blocking head is arranged at the other end of the pull rod, the pull thread is an elastic pull thread, and the other end of the pull thread is connected onto the inner wall of the expansion air bag. The self-closing air bag expander for the back abdominal cavity is simple to operate. Only one operator is required in the operation process to finish the whole expansion work. The air bag expander has a function of self closing, can be closed by itself when the air bag is aerated to the required extent, greatly facilitates in-operation operation of clinical doctors, reduces operation pressure of the doctors and improves operation effect.
Description
technical field [0001] The invention relates to a medical device, in particular to a retroperitoneal cavity self-sealing air bag dilator. Background technique [0002] Clinically, there is no special extraperitoneal dilator in laparoscopic surgery. Generally, a sterile urinary catheter is used, with an inflatable bag tied to the front end, and 800-1000 ml of gas is injected repeatedly through a 50 ml syringe to fully expand the extraperitoneal cavity. There are often the following problems: the operation is cumbersome, and two people must cooperate. One person uses a needle tube to repeatedly inject gas, and the other person must use a hemostat to repeatedly clamp the urinary catheter to prevent air leakage. Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies of the above technical problems, to provide a retroperitoneal cavity self-sealing air bag dilator, which is easy to operate, and only one person can complete the entire...
Claims
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IPC IPC(8): A61M29/02
Inventor 朱小娟时振国
Owner HENAN UNIV OF SCI & TECH