Constant-pressure variable-flow pneumoperitoneum machine

Abstract

The invention provides a constant-pressure variable-flow pneumoperitoneum machine. The constant-pressure variable-flow pneumoperitoneum machine comprises a shell, and a pneumoperitoneum machine air inlet, a pneumoperitoneum machine air outlet, a smoke removal air inlet and a smoke removal air outlet are correspondingly formed in the outer side of the shell. The pneumoperitoneum machine air inlet is connected with an external air source, the pneumoperitoneum machine air outlet is connected with an abdominal cavity of a patient, the smoke removal air inlet is connected with the abdominal cavityof the patient, and the smoke removal air outlet communicates with a vacuum extractor. A control module, a pneumatic module, a temperature detection module, a safety module, a temperature control module and a smoke removal module are arranged in the shell. The control module is correspondingly in signal connection with the pneumatic module, the temperature detection module, the safety module, thetemperature control module and the smoke removal module. According to the constant-pressure variable-flow pneumoperitoneum machine, a traditional air inlet mode is improved, constant-pressure variable-flow control over gas is achieved, the error range of a pressure adjusting interval is small, the change of gas supply flow is stable and uniform, smoke caused by intraperitoneal electrosurgical product work in the operation process can be eliminated in time through the linkage of the smoke removal module and the pneumatic module, and the new clinical requirement for the pneumoperitoneum machineis met.

Description

technical field [0001] The invention relates to the technical field of insufflation machine equipment, in particular to a constant pressure variable flow insufflation machine. Background technique [0002] As a standard configuration of laparoscopic surgery, the insufflation machine plays the role of inflating the abdominal cavity in such as hepatobiliary surgery and gastrointestinal surgery, so as to obtain a good operating space. The insufflation machine is an important equipment for laparoscopic surgery. It makes the surgical site or cavity inflated and bulged, which is convenient for doctors to observe and diagnose. Since the equipment belongs to micro-pressure and micro-flow precision control equipment (the working pressure is generally 0-30mmHg, and the maximum gas delivery volume is generally less than 40LPM), there are problems such as difficulty in equipment preparation and high risk of equipment use, because out-of-control air pressure will inevitably affect the op...

AI Technical Summary

Problems solved by technology

The peak value of the pressure pulse often exceeds the pressure setting value, and in the dynamic situation where the deflation volume changes greatly, the output pressure of the insufflation machine can even reach 40mmHg, which is far beyond the clinical safety critical value. At the same time, the pulse-shaped supply Gas can easily lead to pressure shock in the abdominal cavity of the patient, and the uncertainty of the operation time also leads to unstable control cycle of the equipment and poor pressure control accuracy. machine

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