Pressure monitoring device for cerebrospinal fluid drainage

Abstract

The invention provides a pressure monitoring device for cerebrospinal fluid drainage, and relates to the technical field of medical instruments, the pressure monitoring device is provided with a drainage tube, a pressure sensor and a pressure transmitting mechanism, the pressure transmitting mechanism is provided with a pressure transmitting tube and a pressure transmitting valve, and the pressure transmitting valve is arranged on the pressure transmitting tube; the inner end of the pressure transmitting tube is communicated with the drainage tube, and a sealing cavity is formed in the outer end of the pressure transmitting tube and is communicated with the outer end of the pressure transmitting tube; protective gas is arranged in the sealing cavity, and the pressure sensor is arranged in the sealing cavity; the sealing cavity is communicated with the drainage pipe through the pressure transmitting pipe, drainage liquid is arranged in the drainage pipe, protective gas is arranged in the sealing cavity, the drainage liquid and the protective gas are both fluid, when the drainage liquid and the protective gas are communicated, a gas-liquid separation face is formed between the drainage liquid and the protective gas, and the pressures on the two sides of the gas-liquid separation face are the same. The pressure sensor measures pressure in a liquid and gas conduction mode; the pressure sensor is arranged in the sealing cavity, and the protective gas in the sealing cavity can protect the drainage liquid from being in contact with the pressure sensor.

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