Digital blood leakage sensor
A sensor and color sensor technology, applied in the field of blood leakage sensors, can solve the problems of complex structure of the blood leakage sensor, easy to be interfered by external environment, low sensitivity, etc., and achieve the effects of simple structure, strong anti-interference ability and high sensitivity
Active Publication Date: 2020-07-24
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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[0005] The purpose of the present invention is to overcome the problems of the current blood leakage sensor, such as complex structure, low sensitivity, easy to be interfered by the external environment and cause false alarms, etc., and propose a digital blood leakage sensor
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[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0035] The digital blood leakage sensor of the present invention includes a light shielding box, a red and green two-color light emitting diode 51, a color sensor 61, a power management module, a light source driving module, a microprocessor and a digital communication module. Red and green light emitting diodes 51 , power management module and light source driving module are distributed on the circuit board 5 on the light source side; color sensors 61 , microprocessors and digital communication modules are distributed on the circuit board 6 on the color sensor side. The light source side circuit board 5 and the color sensor side circuit board 6 are arranged in the light-proof box.
[0036] The output terminals of the power management module are respectively connected to the power input terminals of the light source driving module, microprocess...
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A digital blood leakage sensor adopts a single red-green double-color light source and a color sensor. A microprocessor cooperatively controls a color of light emitted by a light source and the colorof the light received by the color sensor, so that the purpose of red-green double-color light detection is achieved. The digital blood leakage sensor comprises a light shielding box, a red-green double-color light emitting diode (51), the color sensor (61) and a detection circuit. A round channel (141) used for fixing a dialysis pipeline is arranged on the light shielding box. The red-green double-color light emitting diode (51) and the color sensor (61) are oppositely installed on two sides of the round channel (141), and the detection circuit is arranged in the light shielding box. The light emitted by the red-green double-color light emitting diode (51) penetrates through the dialysis pipeline and vertically irradiates the color sensor (61) on the opposite side. The detection circuit judges whether blood leakage occurs or not according to a light intensity change received by the color sensor (61). The digital blood leakage sensor is suitable for being applied to bioartificial liver, blood purifiers, peritoneal dialysis machines and other medical equipment.
Description
technical field [0001] The invention relates to a blood leakage sensor. Background technique [0002] When using blood purification machines, bioartificial liver and other hemodialysis equipment to treat patients with kidney failure or liver failure, the dialysis machine pumps blood into the equipment pipeline through the patient's vascular access, and the blood needs to be reinfused after purification back into the patient. Its purification process mainly uses the intermembrane pressure of the hemodialyzer to realize diffusion and convection, remove toxins and excess water molecules in the patient's body, and maintain water, electrolyte, and acid-base balance. During the whole treatment process, the membrane may be damaged due to the pressure on the surface of the membrane exceeding the withstand pressure, causing blood leakage, that is, bleeding, which endangers the life of the patient. [0003] Blood leakage sensor is an important part of blood purification equipment, a...
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IPC IPC(8): G01M3/20
CPCG01M3/20
Inventor 李柯吴昌哲张广浩张丞杨嘉屹张玉霞霍小林
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI