CN201368882Y - Liquid quantitative injection mechanism for medical testing - Google Patents
Liquid quantitative injection mechanism for medical testing Download PDFInfo
- Publication number
- CN201368882Y CN201368882Y CNU2009200229405U CN200920022940U CN201368882Y CN 201368882 Y CN201368882 Y CN 201368882Y CN U2009200229405 U CNU2009200229405 U CN U2009200229405U CN 200920022940 U CN200920022940 U CN 200920022940U CN 201368882 Y CN201368882 Y CN 201368882Y
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- China
- Prior art keywords
- syringe
- piston
- quantitative injection
- liquid quantitative
- motor
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Abstract
The utility model relates to a liquid quantitative injection mechanism for medical testing, which mainly comprises a support plate of a syringe, a motor fixed on the support plate of the syringe and at least one syringe, a syringe piston is connected with a piston linear propulsion mechanism which is driven by the motor, photoelectric switches which are connected with a motor control circuit are respectively arranged in the initial position and the final position of the motion of the syringe piston, and a light blocking pillar which can block light paths of the photoelectric switches is arranged at the back part of the syringe piston. Compared with the prior art, the liquid quantitative injection mechanism has the advantages of accurate quantitation, good reproducibility, easy processing, low production cost, convenient disassembly and assembly, friction resistance of the syringe piston, good sealing property and being applicable to long-term use.
Description
Technical field
The utility model relates to the liquid quantitative injection mechanism that a kind of medical science detects usefulness, belongs to technical field of medical instruments.
Background technology
At present, there is the not high problem of quantitative degree of accuracy mostly in the liquid quantitative injection device that is used for the medical science detection range, thereby causes between sample that error is big, repeatability is bad, the result that influence detects.In addition,, cause its poor sealing easy-to-leak liquid, and have molecule and enter liquid, cause sample contamination because the piston of syringe rubs for a long time.
Summary of the invention
For addressing the above problem, the utility model provides the medical science of a kind of energy accurate quantification, syringe piston good airproof performance to detect the liquid quantitative injection mechanism of usefulness.
The utility model is achieved through the following technical solutions:
Described medical science detects the liquid quantitative injection mechanism of usefulness, include the syringe back up pad, be fixed on motor and at least one syringe on the syringe back up pad, syringe piston is connected with motor-driven piston linear propulsive mechanism, its special character is: the initial position of described syringe piston motion is provided with the optoelectronic switch that is connected with circuit for controlling motor respectively with the final position place, but the syringe piston rear portion is provided with the post that is in the light of shading light electric switch light path.
Described piston linear propulsive mechanism comprises the gear that is fixed on the motor shaft, and with gearing mesh and the tooth bar parallel with syringe piston direction of motion, the other end of tooth bar is connected with the syringe piston rear portion.
For keeping syringe piston to move along a straight line, described syringe piston rear end is provided with the piston fixing slide carriage, and the syringe back up pad is provided with the chute parallel with the piston motion direction, and piston fixing slide carriage and chute are slidingly connected.The other end of described tooth bar is fixed with the tooth bar pedestal, and the tooth bar pedestal is connected with the syringe piston rear portion.Described motor is a stepper motor.
The utility model has utilized the accurate location of optoelectronic switch and the angle sorting and the angle conversion tooth bar moving displacement of stepper motor to realize the accuracy of little displacement, thereby has guaranteed the accurately quantitative of liquid; Syringe piston material of the present utility model adopts poly-PTFE, low-friction coefficient, and wear-resisting wiping, sealing keeps good after long-time the application.
The utility model compared with prior art quantitatively accurately, good reproducibility, handling ease, low, the easy accessibility of production cost, the syringe piston rub resistance, good airproof performance is fit to long-time the use.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of looking up of the present utility model.
Wherein, 1 is stepper motor, and 2 is syringe piston, and 3 is syringe, and 4 is the syringe holder, and 5 is the piston fixing slide carriage, and 6 is optoelectronic switch, and 7 are the post that is in the light, and 8 is the tooth bar pedestal, and 9 is tooth bar, and 10 is gear, and 11 is the syringe back up pad, and 12 is chute.
Embodiment
The utility model is described in further detail below in conjunction with specific embodiment.
Medical science described in the utility model detects the liquid quantitative injection mechanism of usefulness, include syringe back up pad 11, be fixed on stepper motor 1 and syringe 3 on the syringe back up pad 11, syringe piston 2 is connected with the piston linear propulsive mechanism that stepper motor 1 drives, the initial position of described syringe piston 2 motions is provided with the optoelectronic switch 6 that is connected with stepper motor 1 control circuit respectively with the final position place, but syringe piston 2 rear portions are provided with the post 7 that is in the light of shading light electric switch 6 light paths.
Described piston linear propulsive mechanism comprises the gear 10 that is fixed on the motor shaft, and with gear 10 engagement and the tooth bars 9 parallel with syringe piston direction of motion, the other end of tooth bar 9 is connected with the rear portion of syringe piston 2.Described syringe piston 2 rear ends are provided with piston fixing slide carriage 5, and syringe back up pad 11 is provided with the chute parallel with the piston motion direction 12, and piston fixing slide carriage 5 is slidingly connected with chute 12.The other end of described tooth bar is fixed with tooth bar pedestal 8, and tooth bar pedestal 8 is connected with the rear portion of syringe piston 2.
The utility model is converted into 360 degree of motor shaft the tooth pitch of gear, again by cooperating with tooth bar, be converted into the micro-displacement of tooth bar, the rack drives piston is made micro-displacement like this, realized the accurate control of little displacement, done little displacement and move thereby drive piston, realized liquid accurately quantitatively, have optoelectronic switch accurately to locate again, so the utility model is than existing quantitative injection mechanism quantitative accuracy height, good reproducibility.Syringe piston material of the present utility model adopts poly-PTFE, low-friction coefficient, and wear-resisting wiping, sealing keeps good after long-time the application.The syringe holder has four semicircle clamps, syringe firmly can be stuck in the inside, and the surface compresses with the fixed block that has four semicircle clamps, and it is all very convenient that each syringe is changed dismounting like this, and handling ease, realizes simple.
Claims (5)
1. a medical science detects the liquid quantitative injection mechanism of usefulness, include the syringe back up pad, be fixed on motor and at least one syringe on the syringe back up pad, syringe piston is connected with motor-driven piston linear propulsive mechanism, it is characterized in that: the initial position of described syringe piston motion is provided with the optoelectronic switch that is connected with circuit for controlling motor respectively with the final position place, but the syringe piston rear portion is provided with the post that is in the light of shading light electric switch light path.
2. liquid quantitative injection mechanism according to claim 1, it is characterized in that: described piston linear propulsive mechanism comprises the gear that is fixed on the motor shaft, with gearing mesh and the tooth bar parallel with syringe piston direction of motion, the other end of tooth bar is connected with the syringe piston rear portion.
3. liquid quantitative injection mechanism according to claim 1 and 2 is characterized in that: described syringe piston rear end is provided with the piston fixing slide carriage, and the syringe back up pad is provided with the chute parallel with the piston motion direction, and piston fixing slide carriage and chute are slidingly connected.
4. liquid quantitative injection mechanism according to claim 2 is characterized in that: the other end of described tooth bar is fixed with the tooth bar pedestal, and the tooth bar pedestal is connected with the syringe piston rear portion.
5. according to claim 1,2 or 4 described liquid quantitative injection mechanisms, it is characterized in that: described motor is a stepper motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200229405U CN201368882Y (en) | 2009-03-10 | 2009-03-10 | Liquid quantitative injection mechanism for medical testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200229405U CN201368882Y (en) | 2009-03-10 | 2009-03-10 | Liquid quantitative injection mechanism for medical testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201368882Y true CN201368882Y (en) | 2009-12-23 |
Family
ID=41487774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200229405U Expired - Fee Related CN201368882Y (en) | 2009-03-10 | 2009-03-10 | Liquid quantitative injection mechanism for medical testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201368882Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105316A (en) * | 2012-11-06 | 2013-05-15 | 苏州聚阳环保科技有限公司 | Injection pump |
| CN105107053A (en) * | 2015-09-07 | 2015-12-02 | 张明 | Full automatic mix push injection pump |
| CN107101841A (en) * | 2017-06-05 | 2017-08-29 | 金华出入境检验检疫局综合技术服务中心 | A kind of treadmills durability test device |
| CN107966411A (en) * | 2017-12-27 | 2018-04-27 | 北京东方园林环境股份有限公司 | A kind of miniature automatic water quality monitoring quality control system and mark-on reclaims method |
-
2009
- 2009-03-10 CN CNU2009200229405U patent/CN201368882Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105316A (en) * | 2012-11-06 | 2013-05-15 | 苏州聚阳环保科技有限公司 | Injection pump |
| CN105107053A (en) * | 2015-09-07 | 2015-12-02 | 张明 | Full automatic mix push injection pump |
| CN105107053B (en) * | 2015-09-07 | 2018-01-12 | 张明 | Pump is injected in a kind of full-automatic mixing |
| CN107101841A (en) * | 2017-06-05 | 2017-08-29 | 金华出入境检验检疫局综合技术服务中心 | A kind of treadmills durability test device |
| CN107966411A (en) * | 2017-12-27 | 2018-04-27 | 北京东方园林环境股份有限公司 | A kind of miniature automatic water quality monitoring quality control system and mark-on reclaims method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20130310 |