Micro-injection control system and method
A micro-injection and control system technology, applied in the field of injectors, can solve the problems of insufficient injection accuracy, safety, reliability and stability, transmission and feedback noise interference, etc., achieving low cost, eliminating signal interference and jitter, and power consumption. low effect
Inactive Publication Date: 2015-03-25
李华
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Problems solved by technology
However, in the practice of clinical drug injections such as insulin injections and cardiovascular drug injections, there are extremely high requirements for the accuracy of the injection volume. In order to solve the accuracy requirements, the existing technology adds FPGA or proprietary The control of the chip, but the extremely high-precision injection volume needs to meet the control accuracy requirements of the micron level, and the motor will encounter vibrations during operation, and the transmission and feedback of the motor control signal will also encounter fluctuations such as noise interference. There are still deficiencies in the control of the motor in the prior art in terms of injection accuracy, safety, reliability and stability
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0026] figure 1 It is a system structure diagram of the present invention.
[0027] see figure 1 As shown, a microinjection control system provided by the present invention includes an injection syringe 1 containing injection liquid, a micro motor 2, an encoder 3, a DSP chip 4, a signal modulation circuit 11, a pressure sensor 7, a temperature sensor 8, Power management unit 5 , monitoring alarm unit 9 and output output unit 10 .
[0028] The micro motor 2 is co...
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The invention provides a micro-injection control system and method. The micro-injection control system comprises an injection syringe, a micro motor, an encoder and a DSP chip, wherein the injection syringe contains injection liquid. The micro motor is connected with the injection syringe, and the encoder is connected a rotation shaft of the micro motor and outputs orthogonal coding signals to the DSP chip. The DSP chip controls start, stop and the route of the micro motor according to signals fed back by the encoder, eliminates signal interference and shake, guarantees that the push distance of the micro motor is larger than 0.0462 micro meter and the injection quantity is larger than or equal to 0.0092 micro level, and can respond to real-time signals within a sufficient period. Cost is low, and electric consumption is low.
Description
technical field [0001] The invention relates to a syringe, in particular to a micro-injection control system and method used in medical scientific research and clinical application. Background technique [0002] Micro-injection control has been widely used in biomedical scientific research and clinical practice. The micro-injection control technology in the prior art generally uses a stepping motor or a Hall-type motor to connect with the syringe. By controlling the motor, the injection volume and Extraction control. However, in the practice of clinical drug injections such as insulin injections and cardiovascular drug injections, there are extremely high requirements for the accuracy of the injection volume. In order to solve the accuracy requirements, the existing technology adds FPGA or proprietary The control of the chip, but the extremely high-precision injection volume needs to meet the control accuracy requirements of the micron level, and the motor will encounter vi...
Claims
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Login to View More IPC IPC(8): A61M5/20A61M5/31
CPCA61M5/20A61M5/44A61M2205/50
Inventor 李华沈寅秋戴龙
Owner 李华