CN102670325B - Electric control piston medicament injector and method - Google Patents
Electric control piston medicament injector and method Download PDFInfo
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- CN102670325B CN102670325B CN201210123488.8A CN201210123488A CN102670325B CN 102670325 B CN102670325 B CN 102670325B CN 201210123488 A CN201210123488 A CN 201210123488A CN 102670325 B CN102670325 B CN 102670325B
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Abstract
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
The present invention relates to a kind of syringe, particularly a kind of electric control piston medicament injector and method, control for laboratory liquid inlet volume.
Background technology
The research of neuroscience is in the ascendant.The administration of animal brain stereoscopic localized is the experimental technique often used in Neuroscience Research.As the locating injection Tract tracing agent of cerebral nucleus group, active medicine, receptor stimulating agent, receptor antagonist etc.This micrurgy requires that injection volume accurately (0.1 microlitre), and injection speed is constant, reproducible, and tissue injury is little.Traditional micro-injection adopts the singlehanded method promoting microsyringe piston to carry out, and injection speed can not keep constant, and tissue injury is large, affects the interpretation of experimental result; And often there is syringe needle blocking, affect experiment process, performance accuracy cannot meet above-mentioned requirements.Portion of reagent needs voltage ion to import, and further increases the operation complexity of traditional micro-injection method.
Summary of the invention
The object of the invention is the problems referred to above solving the locating injection existence of traditional Mus cerebral nucleus group, provide a kind of tissue injury little, convenient to use, reproducible electric control piston medicament injector and method.
The object of the present invention is achieved like this, electric control piston medicament injector, at least comprise syringe body, syringe body is divided into piston chamber and the second injection liquid chamber by seal, second injection liquid chamber has syringe liquid outlet, cavity is divided into epicoele and cavity of resorption by piston by piston chamber, and epicoele and cavity of resorption have the gentle input/output mouth of gas I/O port respectively.Namely gas I/O port can be gas input port, also can be gas delivery outlet; Equally, namely gas input/output mouth can be gas delivery outlet, also can be gas input port; The second described injection liquid chamber has syringe piston, and syringe piston lower end forms the first injection liquid chamber, and the first injection liquid chamber sucks injection by syringe liquid outlet.
Described epicoele has pressure sensor interface, by pressure sensor interface Bonding pressure sensor.Cavity of resorption has displacement transducer interface, by displacement transducer interface connection bit displacement sensor.
The gentle input/output mouth of described gas I/O port connects proportional reversing valve, and proportional reversing valve connects air pump and source of the gas.
In order to make described source of the gas pure, source of the gas output channel there is filter, in case the impurity in source of the gas enters epicoele and cavity of resorption.
Electric-controlled piston type drug injection method, before transfusion, by keyboard to processor input liquid inlet volume data, or by liquid inlet volume data stored in memory; During transfusion, processor controls air pump work, processor is while detect the pressure of air inlet pressure sensor, control ratio reversal valve opening degree, and control piston bar drives syringe piston to start transfusion downwards, syringe piston is at the second injection indoor moving, the gas input/output mouth connected by syringe liquid outlet to injecting body fluid injection, meanwhile, the displacement of processor detecting position displacement sensor, when controlling liquid inlet volume to setting value, quit work; When exiting piston rod, change proportional reversing valve direction, processor controls air pump work, proportional reversing valve is in and exits transfusion state.
Advantage of the present invention is: owing to being fixed with the piston rod in a cylinder body matched by the injector push-rod in syringe, make piston rod and injector push-rod on an axis of movement, cylinder body air inlet passes through respectively by proportional reversing valve and source of the gas mutually with cylinder body gas outlet, air pump is had between source of the gas and proportional reversing valve, cylinder body is separately installed with displacement transducer and air inlet pressure sensor, whether the former puts in place for detecting liquid inlet volume, and the latter is for controlling the speed of liquid inlet volume.Pass through the output valve of control ratio reversal valve and the gentle pressure transducer of detecting position displacement sensor like this, just conveniently can control injection volume, reach the object of Digital Control.
Accompanying drawing explanation
Below in conjunction with embodiment accompanying drawing, the invention will be further described:
Fig. 1 is syringe example structure schematic diagram of the present invention;
In figure, 1, syringe body; 2, syringe piston; 3, the first injection liquid chamber; 4, syringe liquid outlet; 5, piston rod; 6, displacement transducer; 7, pressure transducer; 8, proportional reversing valve; 9, air pump; 10, source of the gas; 11, gas I/O port; 12, gas input/output mouth; 13, seal; 14, piston chamber; 15, the second injection liquid chamber; 16, epicoele; 17, cavity of resorption; 18, piston.
Detailed description of the invention
As shown in Figure 1, at least comprise syringe body 1, syringe body 1 is divided into piston chamber 14 and the second injection liquid chamber 15 by seal 13, second injection liquid chamber 15 has syringe liquid outlet 4, cavity is divided into epicoele 16 and cavity of resorption 17 by piston 18 by piston chamber 14, and epicoele 16 and cavity of resorption 17 have the gentle input/output mouth 12 of gas I/O port 11 respectively.Namely gas I/O port 11 can be gas input port, also can be gas delivery outlet; Equally, namely gas input/output mouth 12 can be gas delivery outlet, also can be gas input port; The second described injection liquid chamber 15 has syringe piston 2, and syringe piston 2 lower end forms the first injection liquid chamber 3, first injection liquid chamber 3 and sucks injection by syringe liquid outlet 4.
Epicoele 16 has pressure sensor interface, by pressure sensor interface Bonding pressure sensor 7.Cavity of resorption 17 has displacement transducer interface, by displacement transducer interface connection bit displacement sensor 6.
The gentle input/output mouth 12 of gas I/O port 11 connects proportional reversing valve 8, and proportional reversing valve 8 connects air pump 9 and source of the gas 10.
In order to make source of the gas 10 pure, source of the gas 10 output channel there is filter, in case the impurity in source of the gas 10 enters epicoele 16 and cavity of resorption 17.
During transfusion work, by keyboard to processor input liquid inlet volume data, or by liquid inlet volume data stored in memory, processor controls air pump 9 and works, processor is while detect the pressure of air inlet pressure sensor 7, control ratio reversal valve 8 opening degree on one side, control piston bar 5 drives syringe piston 2 to start transfusion downwards, syringe piston 2 is mobile in the second injection liquid chamber 15, the gas input/output mouth 12 connected by syringe liquid outlet 4 is to injecting body fluid injection, simultaneously, the displacement of processor detecting position displacement sensor 6, when controlling liquid inlet volume to setting value, quit work.Meanwhile, processing unit controls warning circuit work.
When exiting piston rod 5, change proportional reversing valve 8 direction, processor controls air pump 9 and works, and proportional reversing valve 8 is in and exits transfusion state.
The parts that the present embodiment does not describe in detail and structure belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.
Claims (1)
1. electric control piston medicament injector, it is characterized in that: at least comprise syringe body (1), syringe body (1) is divided into piston chamber (14) and the second injection liquid chamber (15) by seal (13), second injection liquid chamber (15) has syringe liquid outlet (4), cavity is divided into epicoele (16) and cavity of resorption (17) by piston (18) by piston chamber (14), and epicoele (16) and cavity of resorption (17) have the gentle input/output mouth (12) of gas I/O port (11) respectively; Gas I/O port (11) namely can be gas input port, also can be gas delivery outlet; Equally, gas input/output mouth (12) namely can be gas delivery outlet, also can be gas input port; The second described injection liquid chamber (15) has syringe piston (2), and syringe piston (2) lower end forms the first injection liquid chamber (3), and the first injection liquid chamber (3) sucks injection by syringe liquid outlet (4); Described epicoele (16) has pressure sensor interface, by pressure sensor interface Bonding pressure sensor (7); Cavity of resorption (17) has displacement transducer interface, by displacement transducer interface connection bit displacement sensor (6); The gentle input/output mouth (12) of described gas I/O port (11) connects proportional reversing valve (8), and proportional reversing valve (8) connects air pump (9) and source of the gas (10); In order to make described source of the gas (10) pure, source of the gas (10) output channel there is filter, in case the impurity in source of the gas (10) enters epicoele (16) and cavity of resorption (17);
Its principle is: by keyboard to processor input liquid inlet volume data, or by liquid inlet volume data stored in memory, processor controls air pump work, and processor detects the pressure of air inlet pressure sensor, on one side control ratio reversal valve opening degree, control piston bar drives syringe piston to start transfusion downwards, syringe piston at the second injection indoor moving, meanwhile, the displacement of processor detecting position displacement sensor, when controlling liquid inlet volume to setting value, quit work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210123488.8A CN102670325B (en) | 2012-04-25 | 2012-04-25 | Electric control piston medicament injector and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210123488.8A CN102670325B (en) | 2012-04-25 | 2012-04-25 | Electric control piston medicament injector and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102670325A CN102670325A (en) | 2012-09-19 |
| CN102670325B true CN102670325B (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210123488.8A Expired - Fee Related CN102670325B (en) | 2012-04-25 | 2012-04-25 | Electric control piston medicament injector and method |
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| Country | Link |
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| CN (1) | CN102670325B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105496471A (en) * | 2016-01-26 | 2016-04-20 | 陆海鹤 | Pneumatic cell collector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327724A (en) * | 1979-05-30 | 1982-05-04 | Michael Birk | Pneumatically operable injection device |
| EP0347190A1 (en) * | 1988-06-14 | 1989-12-20 | Vci Corporation | Needleless vacuum-compression injector |
| CN1321096A (en) * | 1999-09-17 | 2001-11-07 | 巴克斯特国际公司 | Fluid dispenser with stabilized fluid flow |
| CN101784295A (en) * | 2007-08-20 | 2010-07-21 | 马林克罗特公司 | Fluid driven medical injectors |
| CN202589701U (en) * | 2012-04-25 | 2012-12-12 | 中国人民解放军第四军医大学 | Electrically-controlled piston type medicament injector |
-
2012
- 2012-04-25 CN CN201210123488.8A patent/CN102670325B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327724A (en) * | 1979-05-30 | 1982-05-04 | Michael Birk | Pneumatically operable injection device |
| EP0347190A1 (en) * | 1988-06-14 | 1989-12-20 | Vci Corporation | Needleless vacuum-compression injector |
| CN1321096A (en) * | 1999-09-17 | 2001-11-07 | 巴克斯特国际公司 | Fluid dispenser with stabilized fluid flow |
| CN101784295A (en) * | 2007-08-20 | 2010-07-21 | 马林克罗特公司 | Fluid driven medical injectors |
| CN202589701U (en) * | 2012-04-25 | 2012-12-12 | 中国人民解放军第四军医大学 | Electrically-controlled piston type medicament injector |
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| Publication number | Publication date |
|---|---|
| CN102670325A (en) | 2012-09-19 |
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