Device for detecting air in infusion pipeline

Abstract

The invention discloses a device for detecting air in an infusion pipeline, relating to the field of medical appliances. The device comprises a shell and a hardware part mounted in the shell, wherein a mounting groove is formed in the surface of the top end of the shell; a power wire is arranged on the surface of the bottom end of the shell; the power wire is connected with a plug; the hardware part is composed of a microcontroller, an ultrasound transmitting transducer, an ultrasound receiving transducer, a receiving signal amplifying and shaping module, a sensitivity adjusting device, an output state indicating module and an external enabling module, wherein the external enabling module is electrically connected with the microcontroller; the microcontroller controls and is connected with the sensitivity adjusting device, the output state indicating module and the ultrasound transmitting transducer; the ultrasound transmitting transducer, the ultrasound receiving transducer and the receiving signal amplifying and shaping module are electrically connected in sequence; and the receiving signal amplifying and shaping module is then connected with the microcontroller. The device disclosed by the invention has the advantages of few components, simple structure, stable performance, low cost, small volume, adjustable sensitivity, high practicability, and the like.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an air detection device in a transfusion pipeline. Background technique [0002] In industrial production and medical applications, especially medical devices, there are many cases where non-contact detection of air in the infusion line is required, such as: blood processing equipment, blood component collection equipment, infusion pumps, etc., and the air detection device Different functions in practical applications have different sensitivity requirements, so the appropriate sensitivity is of great significance for practical applications, and too sensitive will also cause certain troubles. At present, all air detection devices are ultrasonic air detectors, and their control technology is generally as follows: at the transmitting end, an ultrasonic pulse is generated by a high-frequency modulation circuit, loaded on the transmitting transducer, and the ultrasonic signal is transmi...

AI Technical Summary

Problems solved by technology

Its complex processing method and more components lead to the following characteristics: unstable performance, complex structure, high cost, large volume, and non-adjustable sensitivity.

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