Electric control piston medicament injector and method
A drug injector, a piston-type technology, applied in the field of injectors, can solve the problems of large tissue damage, blockage of the injector needle, affecting the experimental results, etc., and achieve the effects of convenient injection volume and convenient control.
Inactive Publication Date: 2012-09-19
FOURTH MILITARY MEDICAL UNIVERSITY
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Problems solved by technology
The traditional micro-injection is carried out by pushing the piston of the micro-injection syringe with one hand, the injection speed cannot be kept constant, the tissue damage is large, and the interpretation of the experimental results is affected; the syringe needle is often blocked, which affects the experimental process, and the operation accuracy cannot meet the above requirements
Some reagents require voltage iontophoresis, which increases the operational complexity of traditional microinjection methods
Method used
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Embodiment Construction
[0013] Such as figure 1 As shown, it at least includes a syringe body 1, and the syringe body 1 is divided into a piston chamber 14 and an injection chamber 15 by a sealing port 13. The body is divided into an upper cavity 16 and a lower cavity 17, and the upper cavity 16 and the lower cavity 17 have gas input / output ports 11 and gas output / input ports 12 respectively. The gas input / output port 11 can be the gas input port or the gas output port; similarly, the gas output / input port 12 can be the gas output port or the gas input port; the injection chamber 15 has Syringe piston 2, the injection liquid chamber 3 is formed at the lower end of the syringe piston 2, and the injection liquid chamber 3 sucks the injection liquid through the liquid outlet 4 of the syringe.
[0014] The upper cavity 16 has a pressure sensor interface, through which the pressure sensor 7 is connected. The lower chamber 17 has a displacement sensor interface through which the displacement sensor 6 is ...
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The invention relates to an electric control piston medicament injector and a method. The invention is characterized in that the injector at least comprises an injector tube body, wherein the injector tube body is divided into a piston chamber and an injection chamber by a seal; and the injection chamber is provided with a liquid outlet for the injector. The piston chamber is divided into an upper chamber and a lower chamber by a piston; the upper and lower chambers are provided with an air inlet / outlet and an air outlet / inlet respectively; the air inlet / outlet can be either an air inlet or an air outlet; and similarly, the air outlet / inlet can be either an air outlet or an air inlet. The injection chamber is provided with an injector piston, below which another injection chamber is formed; and injection solution is injected into the injection chamber through the liquid outlet of the injector. The electric control piston medicament injector is characterized by little tissue injury, and high repeatability, and is convenient and fast to use.
Description
technical field [0001] The invention relates to an injector, in particular to an electronically controlled piston-type drug injector and a method thereof, which are used for controlling the liquid intake in a laboratory. Background technique [0002] Research in neuroscience is in the ascendant. Stereotaxic drug administration to animal brains is a frequently used experimental method in neuroscience research. Such as brain nuclei localized injection of beam tracers, active drugs, receptor agonists, receptor antagonists, etc. This micromanipulation requires precise injection volume (0.1 microliter), constant injection speed, good repeatability, and minimal tissue damage. Traditional microinjection is carried out by pushing the plunger of the microsyringe with one hand. The injection speed cannot be kept constant, and the tissue damage is large, which affects the interpretation of the experimental results. Moreover, the syringe needle is often blocked, which affects the expe...
Claims
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Inventor 王文朱超孙莉莉高昌俊每晓鹏陈磊董玉琳李辉张婷武胜昔李云庆
Owner FOURTH MILITARY MEDICAL UNIVERSITY