CN203355025U - Syringe barrel micro-injection type infusion device actuated by shape memory alloy - Google Patents
Syringe barrel micro-injection type infusion device actuated by shape memory alloy Download PDFInfo
- Publication number
- CN203355025U CN203355025U CN 201320389766 CN201320389766U CN203355025U CN 203355025 U CN203355025 U CN 203355025U CN 201320389766 CN201320389766 CN 201320389766 CN 201320389766 U CN201320389766 U CN 201320389766U CN 203355025 U CN203355025 U CN 203355025U
- Authority
- CN
- China
- Prior art keywords
- fixing head
- shape memory
- memory alloy
- spring
- push rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 26
- 238000001802 infusion Methods 0.000 title claims abstract description 25
- 238000000520 microinjection Methods 0.000 title claims abstract description 16
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 4
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009411 base construction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a syringe barrel micro-injection type infusion device actuated by shape memory alloy. A baffle, a first fixing plate and a second fixing plate are arranged on a base plate, positioning holes are formed in a supporting plate and the baffle, semi-circular fixing grooves are formed in the first fixing plate and the second fixing plate, a check block is arranged in the middle of a push rod, a shape memory alloy spring and a reset spring are arranged on the two sides of the check block, the end portion, provided with the reset spring, of the push rod penetrates through a baffle positioning hole and is in contact with a disposable syringe which is fixedly placed into the semi-circular fixing grooves of the first fixing plate and the second fixing plate through a first clamp and a second clamp, the end portion, provided with the shape memory alloy spring of the push rod penetrates through a supporting plate positioning hole, and the supporting plate is fixed to the base plate through bolts. The syringe barrel micro-injection type infusion device actuated by the shape memory alloy has the advantages of being intelligent in structure, free of noise, low in weight and the like, and is suitable for clinical infusion and other aspects.
Description
Technical field
This utility model relates to the infusion set of trace drug injection, relates in particular to a kind of syringe micro-injection formula infusion set driven based on marmem.
Background technology
Infusion set generally refers to a kind of with the transfusion of micromachine replacement traditional gravity, can accurately control the intelligent transfusion equipment of transfusion speed.It can realize the monitoring of the whole process of transfusion state, when the abnormal conditions such as pipeline blockage, bubble occurring, can automatically close rapidly the transfusion path, prevents security incident.But there are the problems such as system complex, cost is expensive, system is unstable in the common micro motor infusion set.
At present the whole world approximately has 5000-6000 ten thousand people to use infusion set to be treated every year, and infusion set year total sales volume in world market has broken through 1,000 hundred million U.S. dollars, and the infusion set series products is obtained extensive use clinical in developed country.
Research and comparison for novel micro injection infusion set over nearly 20 years is many, such as patent CN201110416533.4 has announced a kind of adjustable quantitative injection device, by adjusting the distance of slide block trundle with respect to motor output shaft, reach the purpose of controlling the syringe output; Patent CN200810217720.8 has also invented a kind of by the motor driving, by gear-driven injection device.The common ground of these inventions is that type of drive is all motor, makes the complex structure of infusion set, and noise is difficult for reducing.
Summary of the invention
This utility model purpose is to overcome the deficiencies in the prior art, and a kind of syringe micro-injection formula infusion set driven based on marmem is provided.
The syringe micro-injection formula infusion set driven based on marmem comprises gripper shoe, shape memory alloy spring, push rod, back-moving spring, disposable syringe, the first fixture, the second fixture and pedestal, pedestal comprises baffle plate, the first fixing head, the second fixing head, base plate, base plate is provided with baffle plate, the first fixing head and the second fixing head, all have locating hole on gripper shoe and baffle plate, have semicircle holddown groove on the first fixing head and the second fixing head, be provided with block in the middle of push rod, the block both sides are provided with shape memory alloy spring and back-moving spring, the push rod end of back-moving spring is installed through the baffle plate locating hole, and contact with disposable syringe, disposable syringe is positioned in the semicircle holddown groove on the first fixing head and the second fixing head, and be fixed on the first fixing head and the second fixing head by the first fixture and the second fixture, the locating hole of the push rod end of shape memory alloy spring through gripper shoe is installed, gripper shoe is bolted on base plate.
Described shape memory alloy spring adopts nickel-titanium alloy material, and phase transition temperature is 55 to 75 degrees centigrade or 70 to 90 degrees centigrade, is helical structure, and external diameter is between 7 millimeters to 15 millimeters, and range is between 1 centimetre to 6 centimetres.
Described back-moving spring adopts spring steel material, helical structure, external diameter between 7 millimeters to 15 millimeters, spring constant at 0.2N/mm between 3N/mm.
The beneficial effect that this utility model compared with prior art has
1) shape memory alloy spring is directly controlled by the signal of telecommunication, and electric energy directly is converted to mechanical energy, and energy conversion efficiency is high, saves energy.
2) driver does not have noise in the course of the work, is applicable to clinical use.
3) driver is for the motor result, simple in structure, volume is little.
4) can realize easily speed controlling and the volume control of transfusion.
The accompanying drawing explanation
Fig. 1 is the syringe micro-injection formula infusion set structural representation driven based on marmem;
Fig. 2 is base construction schematic diagram of the present utility model;
Fig. 3 is pusher structure schematic diagram of the present utility model;
The support plate structural representation that Fig. 4 is fixedly push rod of the present utility model;
Structural representation when Fig. 5 completes transfusion for the syringe micro-injection formula infusion set driven based on marmem.
The specific embodiment
Below in conjunction with accompanying drawing, illustrate the syringe micro-injection formula infusion set work process driven based on shape memory alloy spring.
As shown in Fig. 1～4, the syringe micro-injection formula infusion set driven based on marmem comprises gripper shoe 1, shape memory alloy spring 2, push rod 3, back-moving spring 4, disposable syringe 5, the first fixture 6, the second fixture 7 and pedestal 8, pedestal 8 comprises baffle plate 8.1, the first fixing head 8.2, the second fixing head 8.3, base plate 8.4, base plate 8.4 is provided with baffle plate 8.1, the first fixing head 8.2 and the second fixing head 8.3, all have locating hole on gripper shoe 1 and baffle plate 8.1, have semicircle holddown groove on the first fixing head 8.2 and the second fixing head 8.3, be provided with block 3.1 in the middle of push rod 3, block 3.1 both sides are provided with shape memory alloy spring 2 and back-moving spring 4, push rod 3 ends of back-moving spring 4 are installed through baffle plate 8.1 locating holes, and contact with disposable syringe 5, disposable syringe 5 is positioned in the semicircle holddown groove on the first fixing head 8.2 and the second fixing head 8.3, and be fixed on the first fixing head 8.2 and the second fixing head 8.3 by the first fixture 6 and the second fixture 7, the locating hole of push rod 3 ends of shape memory alloy spring 2 through gripper shoe 1 is installed, gripper shoe 1 is bolted on base plate 8.4.
Described shape memory alloy spring adopts nickel-titanium alloy material, and phase transition temperature is 55 to 75 degrees centigrade or 70 to 90 degrees centigrade, is helical structure, and external diameter is between 7 millimeters to 15 millimeters, and range is between 1 centimetre to 6 centimetres.
Described back-moving spring adopts spring steel material, helical structure, external diameter between 7 millimeters to 15 millimeters, spring constant at 0.2N/mm between 3N/mm.
The syringe micro-injection formula infusion method driven based on marmem is: shape memory alloy spring 2 raises by temperature under 1 volt to 5 volts signal of telecommunication effect, when temperature reaches phase transition temperature when above, shape memory alloy spring 2 changes austenitic state into by martensitic state, hardness increases, length becomes large simultaneously, drive push rod 3 to disposable syringe 5 direction motions, and pressed home spring 4, the start injection process, after injection process finishes, the signal of telecommunication fails, shape memory alloy spring 2 natural coolings, be returned to martensitic state by austenitic state, hardness reduces, by push rod 3, shape memory alloy spring 2 is returned to initial position by back-moving spring 4.According to the difference of disposable syringe 5 capacity, the stroke of shape memory alloy spring 2 is between 4 centimetres to 12 centimetres, and the speed flicked by controlling shape memory alloy spring 2, regulate injection speed between 0.1 ml/hour to 1500 ml/hours.
As shown in Figure 5, while for shape memory alloy spring 2, reaching range, the schematic diagram when medicine in disposable syringe 5 is extruded fully, now the decrement of back-moving spring 4 reaches maximum, and electric control signal output simultaneously reduces to zero.
Claims (3)
1. the syringe micro-injection formula infusion set driven based on marmem, is characterized in that described infusion set comprises gripper shoe (1), shape memory alloy spring (2), push rod (3), back-moving spring (4), disposable syringe (5), the first fixture (6), the second fixture (7) and pedestal (8), pedestal (8) comprises baffle plate (8.1), the first fixing head (8.2), the second fixing head (8.3), base plate (8.4), base plate (8.4) is provided with baffle plate (8.1), the first fixing head (8.2) and the second fixing head (8.3), all have locating hole on gripper shoe (1) and baffle plate (8.1), have semicircle holddown groove on the first fixing head (8.2) and the second fixing head (8.3), be provided with block (3.1) in the middle of push rod (3), block (3.1) both sides are provided with shape memory alloy spring (2) and back-moving spring (4), push rod (3) end of back-moving spring (4) is installed through baffle plate (8.1) locating hole, and contact with disposable syringe (5), disposable syringe (5) is positioned in the semicircle holddown groove on the first fixing head (8.2) and the second fixing head (8.3), and be fixed on the first fixing head (8.2) and the second fixing head (8.3) by the first fixture (6) and the second fixture (7), the locating hole of push rod (3) end of shape memory alloy spring (2) through gripper shoe (1) is installed, gripper shoe (1) is bolted on base plate (8.4).
2. according to the syringe micro-injection formula infusion set driven based on marmem claimed in claim 1, it is characterized in that described shape memory alloy spring (2) adopts nickel-titanium alloy material, phase transition temperature is 55 to 75 degrees centigrade or 70 to 90 degrees centigrade, for helical structure, external diameter is between 7 millimeters to 15 millimeters, and range is between 1 centimetre to 6 centimetres.
3. according to the syringe micro-injection formula infusion set driven based on marmem claimed in claim 1, it is characterized in that described back-moving spring (4) adopts spring steel material, helical structure, external diameter between 7 millimeters to 15 millimeters, spring constant at 0.2N/mm between 3N/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320389766 CN203355025U (en) | 2013-07-02 | 2013-07-02 | Syringe barrel micro-injection type infusion device actuated by shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320389766 CN203355025U (en) | 2013-07-02 | 2013-07-02 | Syringe barrel micro-injection type infusion device actuated by shape memory alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203355025U true CN203355025U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320389766 Expired - Fee Related CN203355025U (en) | 2013-07-02 | 2013-07-02 | Syringe barrel micro-injection type infusion device actuated by shape memory alloy |
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| CN (1) | CN203355025U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316398A (en) * | 2013-07-02 | 2013-09-25 | 浙江大学 | Syringe-microinjection-type infusion device based on shape memory alloy driven and method thereof |
| CN104587565A (en) * | 2015-01-26 | 2015-05-06 | 谭永宏 | Screw rod driving device for injection pump |
-
2013
- 2013-07-02 CN CN 201320389766 patent/CN203355025U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316398A (en) * | 2013-07-02 | 2013-09-25 | 浙江大学 | Syringe-microinjection-type infusion device based on shape memory alloy driven and method thereof |
| CN104587565A (en) * | 2015-01-26 | 2015-05-06 | 谭永宏 | Screw rod driving device for injection pump |
| CN104587565B (en) * | 2015-01-26 | 2018-07-17 | 谭永宏 | A kind of screw rod driving device for syringe pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20190702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |