Pleuroperitoneal cavity liquid negative pressure pump suction device

Abstract

The invention discloses a pleuroperitoneal cavity liquid negative pressure pump suction device which comprises a drainage tube, a discharging tube, a drive device, a suction cylinder, a reversing valve, a pressure monitor and a controller. The pressure monitor is used for monitoring pressure in the drainage tube; the drive device is used for driving a suction piston of the suction cylinder to reciprocate; when the pressure monitor detects that a pressure value in the drainage tube is lower than a preset value or the lowering speed of the pressure value in the drainage tube is higher than the preset rate, the controller controls the drive device to stop working; the first port of the reversing valve is communicated with the suction opening of the suction cylinder, the second end of the reversing valve is communicated with the drainage tube, the third port of the reversing valve is communicated with the discharging tube, and the first port of the reversing valve can be communicated withthe second port or the third port; the device can avoid complications caused by great reduction or rapid reduction of pressure inside the pleuroperitoneal cavity and can precisely determine the actualsuction amount by counting the number of motions of the suction cylinder.

Description

technical field [0001] The invention relates to the technical field of thoracic cavity drainage, in particular to a negative pressure pumping device for thoracic cavity fluid. Background technique [0002] In the existing thoracoabdominal drainage technology, medical personnel usually only perform manual operation for suction, or simply monitor the drainage volume, or make indicative regulations. For example, it is stipulated that the drainage volume of the first thoracentesis should not exceed 600ml, the drainage volume of the first paracentesis should not exceed 1000ml, and so on. Although the above-mentioned drainage techniques have good effects, they also have obvious disadvantages. There may still be problems such as excessive suction, too fast, or difficult to quantify the suction volume, which makes it difficult to control the changes in the patient's thoracoabdominal pressure, such as suction too fast. , Overdose may lead to a rapid or large drop in the intrathoraci...

AI Technical Summary

Problems solved by technology

Although the above-mentioned drainage techniques have good effects, they also have obvious disadvantages. There may still be problems such as excessive suction, too fast, or difficult to quantify the suction volume, which makes it difficult to control the changes in the patient's thoracoabdominal pressure, such as suction too fast. , Overdose may lead to a rapid or large drop in the intrathoracic and abdominal pressure, resulting in a series of complications such as reexpansion pulmonary edema, intestinal wall edema, hypotension, and hepatic encephalopathy

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