Injection pump with function of warning user about nearly-empty state or empty state
A syringe pump, near-air technology, applied in the field of medical devices, can solve the problems of poor interchangeability of Hall sensors and output nonlinearity, etc., and achieve the effects of long life, high stability and low cost.
Inactive Publication Date: 2014-04-16
北京中金硅谷科技有限公司
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Problems solved by technology
In addition, the interchangeability of the Hall sensor is poor, the signal changes with temperature, and the output is nonlinear, and a single-chip microcomputer is required for nonlinear and temperature correction
Method used
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[0019] See attached figure 1 , a syringe pump with near empty and empty alarm function, which includes a push rod 1, a rack 2, a screw 4, a screw nut 5, a transmission block 6, an alarm module 7 and a housing 8;
[0020] See attached figure 2 , 3 , the push rod 1 is composed of a push handle and a shaft connected to each other, one end of the shaft is located in the housing 3; the inner wall of the housing 3 is provided with a rack 2; Parallel, the screw rod 4 is driven by the injection pump motor; the lower end of the transmission block 6 is provided with a threaded hole matching with the screw rod 4; the transmission block 6 is provided with a gear 6-1 meshing with the rack 2, and the gear 6-1 A radial magnet 6-2 is provided; a reluctance sensor 6-3 and a central control module 6-4 are also provided on the upper surface of the transmission block 6; the lower end of the transmission block 6 is sleeved on the lead screw 4, and the push rod 1 The rod body is fixedly connect...
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The invention belongs to the technical field of medical instruments, particularly relates to a medical injection pump and discloses an injection pump with the function of warning a user about a nearly-empty state or an empty state. According to the technical scheme, a central-control module (6-4) comprises a magnetoresistive sensor receiving unit and an arithmetic unit, rotation speed information of an injection pump motor, nearly-empty state time information and empty state time information are prestored in the arithmetic unit, the magnetoresistive sensor receiving unit receives data from a magnetoresistive sensor (6-3) and transmits the data to the arithmetic unit, the arithmetic unit works out the position of a current transmission block (6) according to the data transmitted by the magnetoresistive sensor and works out remaining injection time according to the prestored rotation speed information of the injection pump motor, and when the remaining injection time is smaller than a preset value contained in the nearly-empty state time information and the empty state time information, the arithmetic unit sends out a warning signal to a warning module (7). By means of the injection pump, the injection time of medicine in an injector is precisely measured and calculated, and the user can be warned about the nearly-empty state or the empty state of the injector.
Description
technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a medical injection pump. Background technique [0002] When the syringe pump is working, it is necessary to give an alarm prompt for its "nearly completed" injection volume and "completed" injection volume status to remind the medical staff to prepare the medicine in time; [0003] At this stage, most of the syringe pumps produced by domestic manufacturers detect the position of the syringe near completion and completion through the voltage change of the contact switch. The force and temperature of the spring leaf are greatly affected, and the rate of failure is relatively large, which also affects the accurate detection position, causing sometimes the patient's injection has ended, but the syringe pump has not yet been detected, causing a kind of discomfort to the patient's body. Due to the safety factor, and because only two positions are detected, when th...
Claims
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IPC IPC(8): A61M5/31A61M5/20
Inventor 王朕青宫兆涛赵青松周阳侯俊丽王金山
Owner 北京中金硅谷科技有限公司