Injection pump and push plate detection device thereof

Abstract

The invention discloses an injection pump and an injector push plate detection device of the injection pump. The injector push plate detection device comprises a pressure sensor, a force measurement contact of the pressure sensor, a limiting fixing clamp for a plush plate arranged on a push head, and an elastic part, wherein the pressure sensor is arranged on the push head of the injection pump, the force measurement contact pushes against a push plate arranged on the end part of an injector push rod, the elastic part is arranged between the pressure sensor and the force measurement contact, a microswitch is arranged between the pressure sensor and a power circuit thereof, and a normally open contact of the microswitch is switched on when an injector push plate is mounted to a preset position. Therefore, only after an injector is mounted, due to the pressing of the injector push plate, the microswitch is triggered, then power is supplied to the pressure sensor, and then pressure detection is carried out. Therefore, the measured pressure value is not influenced by the temperature fluctuation, and thus the occurrence rate of false alarm is obviously reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a syringe push piece detection device for a syringe pump. The present invention also relates to an injection pump comprising the above-mentioned injector push piece detection device. Background technique [0002] When clinically used drugs must be injected intravenously, and when the dosage must be very accurate, the total amount must be small, the speed of administration must be slow or constant for a long time, syringe pumps are often used to achieve the above purposes; The push head part pushes the syringe push rod for injection infusion, so as to input the liquid medicine in the syringe into the human body, and accurately adjust the advancing speed of the syringe by setting the rotation speed of the syringe pump screw, so as to realize the accurate adjustment of the drug dose. [0003] The end of the push rod of the above-mentioned syringe is provided with a disc, wh...

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned syringe pusher detection device, the pressure sensor is directly connected to the power supply, and it is always in the power-on state. The initial value is easily affected by temperature drift and humidity drift. When the detected pressure value is small, the drift value will affect the detection result. Very large, seriously affecting the detection accuracy, and prone to false alarms

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