CN108771784A - A kind of high-precision syringe using piezoelectric stack - Google Patents
A kind of high-precision syringe using piezoelectric stack Download PDFInfo
- Publication number
- CN108771784A CN108771784A CN201810649576.9A CN201810649576A CN108771784A CN 108771784 A CN108771784 A CN 108771784A CN 201810649576 A CN201810649576 A CN 201810649576A CN 108771784 A CN108771784 A CN 108771784A
- Authority
- CN
- China
- Prior art keywords
- syringe
- driving device
- piston
- outer barrel
- stack
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M5/31515—Connection of piston with piston rod
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The present invention relates to a kind of syringes.A kind of high-precision syringe using piezoelectric stack, including injection needle（1）, syringe outer barrel（2）, piston（3）And driving device, the internal diameter of the piston and syringe outer barrel match, driving device passes through connecting rod（5）With piston（3）It is connected, it is characterised in that：The driving device uses two piezoelectricity fold stack drivers（6）It is symmetrically arranged in driving device fixed frame（7）Interior, the driving device fixed frame is connected and fixed with syringe outer barrel, piezoelectricity fold stack driver（6）Output displacement pass through triangle amplification mechanism（9）Amplification, then pass through connecting rod（5）With piston（3）Connection.For the present invention compared with existing high-precision syringe, driving device is noiseless not only without mechanical friction, and high with flow output control accuracy, and output is steady, the features such as cost of manufacture is low.
Description
Technical field
The present invention relates to a kind of syringes, more particularly, to a kind of high-precision syringe of piezoelectric stack.
Background technology
Syringe is a kind of most commonly seen injecting apparatus, be widely used in health care, bioengineering, chemical analysis with
The fields such as detection.The field is higher to the performance requirement of syringe, it is high with flow output control accuracy for major requirement, output
Steadily, fast response time, the performances such as output pressure height, therefore how to improve the flow output control accuracy of existing syringe, stream
It measures the stationarity exported and response speed has become a crucial research and development direction in injector technology field.
More active to the research of syringe both at home and abroad at present, the syringe mainly studied is filtration syringe and integral type
Syringe.Liquid medicine is pumped into syringe by filtration syringe using the specific drawing liquid channel on filter core, is injected using filtering
It injects to come out of syringe after Channel filtration, filter and syringe is combined together, extract liquid with liquid medicine injection using not
Same channel, conversion can utilize switching handle switch over, avoid external liquid medicine filter in this way and often dismount not
Just.The filtration syringe has many advantages, such as that manufacture craft is simple, at low cost, filtering injection is integrated, but the invention cannot improve
The flow output control accuracy and output pressure of syringe.The needle point structure design of integral type syringe is relatively reasonable, uses
Two scarves are to increase the penetrability of needle point, while the both sides of its conical surface play supporting role to tip, to a certain degree
It is upper to hinder its deformation, the feeling of pain of needle point piercing is considerably reduced, but the syringe cannot improve the stationarity of flow output
And response speed.
Existing technical literature, which discloses, uses stepper motor as the driving device of syringe or syringe pump to improve its essence
Degree, but there are the shortcomings of complicated, cost of manufacture is high, mechanical friction and noise for the syringe.
Invention content
The present invention is in view of the shortcomings of the prior art, propose a kind of high-precision syringe using piezoelectric stack, with existing height
Precision injection device is compared, its driving device is noiseless not only without mechanical friction, and high with flow output control accuracy,
Output is steady, the features such as cost of manufacture is low.
The technical solution adopted in the present invention：
A kind of high-precision syringe using piezoelectric stack, including injection needle, syringe outer barrel, piston and driving device,
The internal diameter of the piston and syringe outer barrel matches, and driving device is connected by connecting rod with piston, and the driving device uses
Two piezoelectricity fold stack drivers are symmetrically arranged in driving device fixed frame, and the driving device fixed frame connects with syringe outer barrel
Fixation is connect, the output displacement of piezoelectricity fold stack driver amplifies by triangle amplification mechanism, then pushes piston to carry out by connecting rod
Injection.
The high-precision syringe using piezoelectric stack, the triangle amplification mechanism use have certain elasticity and
Monosymmetric diamond shape frame, its tip one end of the diamond shape frame and drive is made in carbon, plastics, alloy or the metal material of toughness
Dynamic device fixed frame is mutually fixed, and the other end is connect with syringe piston connecting rod, and diamond shape frame both sides are arranged symmetrically two pressures
Electric fold stack driver is connected with power supply and switch with described two piezoelectricity fold stack drivers.
The high-precision syringe using piezoelectric stack, injection needle is connect with syringe outer cylinder front end uses interference
Cooperation；For piston when being coordinated with syringe outer tube inner wall, piston outer rim is cased with rubber ring.
Beneficial effects of the present invention：
1, the present invention uses the high-precision syringe of piezoelectric stack, and syringe power is using piezoelectricity fold stack driver as driving
Source makes full use of the output displacement of piezoelectric stack to have the characteristics that high control precision, high resolution and larger power output, real
It is high to have showed syringe flow output control accuracy, has exported steady, fast response time, the performances such as output pressure height.With existing height
Precision injection device is compared, its driving device is noiseless not only without mechanical friction, and high with flow output control accuracy,
Output is steady, the features such as cost of manufacture is low.
2, the present invention uses the high-precision syringe of piezoelectric stack, by controlling the on-load voltage of piezoelectric stack driving source,
The output flow that syringe can accurately be controlled puts piezoelectric stack itself output displacement by triangle amplification mechanism
Greatly, the stroke and injection property of piston are further improved, existing syringe, simple in structure, reasonable design are compared.
Description of the drawings
Fig. 1 is structural schematic diagram of the present invention using the high-precision syringe of piezoelectric stack.
Specific implementation mode
Below by specific implementation mode, technical scheme of the present invention will be described in further detail.
Embodiment 1
Referring to Fig. 1, the present invention uses the high-precision syringe of piezoelectric stack, including injection needle 1, syringe outer barrel 2, piston 3
And driving device, the piston 3 and the internal diameter of syringe outer barrel 2 match, driving device is connected by connecting rod 5 with piston 3,
The driving device is symmetrically arranged in using two piezoelectricity fold stack drivers 6 in driving device fixed frame 7, and the driving device is solid
To determine frame 7 to be connected and fixed with syringe outer barrel 2, the output displacement of piezoelectricity fold stack driver 6 amplifies by triangle amplification mechanism 9,
Piston 3 is pushed to be injected by connecting rod 5 again.
Embodiment 2
Referring to Fig. 1, the high-precision syringe using piezoelectric stack of the present embodiment, difference from example 1 is that：It is described
Triangle amplification mechanism uses carbon, plastics, alloy or metal material with certain elasticity and toughness that monosymmetric water chestnut is made
Shape frame, its tip one end of the diamond shape frame are fixed with 7 phase of driving device fixed frame, and the other end connects with syringe piston connecting rod
It connects, diamond shape frame both sides are arranged symmetrically two piezoelectricity fold stack drivers 6, are connect with described two piezoelectricity fold stack drivers 6
Equipped with power supply and switch.Extra super duralumin alloy can be used in triangle amplification mechanism or monosymmetric diamond shape frame is made in brass material
Structure.
As shown, two piezoelectricity fold stack drivers 6 connect socket by conducting wire 11, the socket is set to driving device
7 tail end of fixed frame.Power supply 12 be equipped with voltage adjusting knob 13, power supply one end connect alternating current, output end by conducting wire and with insert
Seat matching plug is connect with aforesaid sockets.Or directly lead out power cord from the driving device fixed frame 7.
The present invention uses the high-precision syringe of piezoelectric stack, injection needle 1 to connect and used with 2 front end of syringe outer barrel
It is full of cooperation；For piston 3 when being coordinated with 2 inner wall of syringe outer barrel, 3 outer rim of piston is cased with rubber ring.
Injection needle 1, with interference fit is combined into, can prevent the liquid leakage in syringe, carry with syringe outer barrel 2
High flow capacity control accuracy.3 outer rim of piston is cased with rubber ring, to increase the leakproofness that it coordinates with syringe inner cylinder, improves flow
The stationarity of output.
Operation principle of the present invention：When two piezoelectric stacks are loaded identical voltage simultaneously, two piezoelectricity being arranged symmetrically
It stacks and itself exports certain displacement, when symmetrical input displacement amount acts on triangle amplification mechanism, triangle amplification mechanism
It is squeezed from upper and lower ends to centre, using the unstability of quadrangle to push the piston of syringe for near-rhombic structure
Liquid is exported, input displacement amount is acted on by connecting rod on piston after the amplification of triangle amplification mechanism, and piston is pushed to carry out
Liquid injection finally obtains flow output control accuracy height, and output is steady, fast response time, the high injecting fluid of output pressure.
Take out medicine process：Triangle amplification mechanism after power-up has certain deformation, and after voltage unloads, triangle is put
The deformation of great institutions restores to original state, forms negative pressure and liquid medicine is evacuated in syringe.
As shown in Figure 1, the present invention uses the high-precision syringe of piezoelectric stack, syringe outer barrel 2 to pass through bolt I（In figure
Label 4）It is assembled with driving device fixed frame 7.The both ends of connecting rod 5 are connected with piston 3 and triangle amplification mechanism 9 respectively
It connects, when being attached with piston 3, is fixed using seccotine, when being attached with triangle amplification mechanism 9, used
Screw 10 is positioned and fixed.
To ensure the symmetry of output displacement, the model of selected two piezoelectric stack driving sources must be consistent, simultaneously
The both ends of piezoelectric stack driving source are fixed on seccotine on driving device fixed frame 7 and triangle amplification mechanism 9 respectively.
Triangle amplification mechanism 9 must use symmetrical structure in structure design, to ensure the maximum output of displacement.Triangle
Shape enlarger 9 passes through bolt II（Scheme label 8 again）It is assemblied on driving device fixed frame 7, and the adjustment of position can be carried out.Three
The use of angular enlarger so that piston obtains the stroke range of bigger.
As shown in Figure 1, being equipped with socket in the tail portion of driving device fixed frame, pass through switch inside socket（It is not shown in figure,
Switch is fixed on position easy to operation on driving device fixed frame 7）Connect piezoelectricity fold stack driver.Syringe is connected by socket
External working power, the working power include regulating circuit, and working power exports button output control voltage by pressure regulation and connects
Enter syringe.The present invention can define the voltage and syringe output flow that piezoelectric stack is loaded by way of experiment
One-to-one relationship further promotes the operability of syringe injection, and the control to syringe flow is made to have continuity.Such as
Table 1 show the relationship of voltage and syringe output flow that piezoelectric stack is loaded.
The relationship of table 1 piezoelectric stack on-load voltage and syringe output flow：
| On-load voltage（V） | 20 | 40 | 60 | 80 | 100 | 120 |
| Output flow（mL/min） | 8 | 11 | 15 | 21 | 28 | 30 |
Claims (3)
1. a kind of high-precision syringe using piezoelectric stack, including injection needle（1）, syringe outer barrel（2）, piston（3）With
And driving device, the piston（3）With syringe outer barrel（2）Internal diameter match, driving device passes through connecting rod（5）With piston
（3）It is connected, it is characterised in that：The driving device uses two piezoelectricity fold stack drivers（6）It is solid to be symmetrically arranged in driving device
Determine frame（7）It is interior, the driving device fixed frame（7）With syringe outer barrel（2）It is connected and fixed, piezoelectricity fold stack driver（6）It is defeated
Go out displacement and passes through triangle amplification mechanism（9）Amplification, then pass through connecting rod（5）With piston（3）Connection.
2. the high-precision syringe according to claim 1 using piezoelectric stack, it is characterised in that：The triangle amplification
Mechanism uses carbon, plastics, alloy or metal material with certain elasticity and toughness that monosymmetric diamond shape frame is made, described
Its tip one end of diamond shape frame and driving device fixed frame（7）Mutually fixed, the other end is connect with syringe piston connecting rod, the water chestnut
Shape frame both sides are arranged symmetrically two piezoelectricity fold stack drivers（6）, with described two piezoelectricity fold stack drivers（6）It is connected with electricity
Source and switch.
3. the high-precision syringe according to claim 1 or 2 using piezoelectric stack, it is characterised in that：Injection needle（1）
With syringe outer barrel（2）Front end connection is using interference fit；Piston（3）With syringe outer barrel（2）It is living when inner wall is coordinated
Plug（3）Outer rim is cased with rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810649576.9A CN108771784B (en) | 2018-06-22 | 2018-06-22 | High-precision injector adopting piezoelectric stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810649576.9A CN108771784B (en) | 2018-06-22 | 2018-06-22 | High-precision injector adopting piezoelectric stack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108771784A true CN108771784A (en) | 2018-11-09 |
| CN108771784B CN108771784B (en) | 2021-06-04 |
Family
ID=64026207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810649576.9A Active CN108771784B (en) | 2018-06-22 | 2018-06-22 | High-precision injector adopting piezoelectric stack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108771784B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049781A (en) * | 2020-09-29 | 2020-12-08 | 长春工业大学 | Passive valve piezoelectric pump with amplifying mechanism |
| CN112196758A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Passive valve piezoelectric pump with clamp-shaped amplifying mechanism |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2391908A (en) * | 2003-04-10 | 2004-02-18 | Delphi Tech Inc | I.c. engine common rail fuel distribution system |
| CN102284955A (en) * | 2011-07-22 | 2011-12-21 | 吉林大学 | Six-freedom degree micro robot based on hybrid drive |
| CN103037921A (en) * | 2010-04-30 | 2013-04-10 | 拜耳药业股份公司 | Displacement Syringe |
| CN104796036A (en) * | 2015-05-06 | 2015-07-22 | 西安交通大学 | Piezoelectric-piston type actuation device with three-stage displacement amplifying structure and actuation method of piezoelectric-piston type actuation device |
| CN204911976U (en) * | 2015-09-05 | 2015-12-30 | 陈治明 | Piezoelectricity injection formula point spouts valve |
| WO2016019240A1 (en) * | 2014-08-01 | 2016-02-04 | Purdue University | Method and apparatus for dynamic surface control of a piezoelectric fuel injector during rate shaping |
| CN105709311A (en) * | 2016-01-18 | 2016-06-29 | 华南农业大学 | Needleless injector based on piezoelectric conversion and using method of needleless injector |
| CN105763097A (en) * | 2016-04-29 | 2016-07-13 | 西安交通大学 | Stepping piezoelectric actuator with magnetic railing ruler output displacement measurement function and method |
| CN106015685A (en) * | 2016-07-22 | 2016-10-12 | 北京控制工程研究所 | Piezoelectric proportion adjustment valve applicable to high-voltage gas |
| CN107681920A (en) * | 2017-10-31 | 2018-02-09 | 长春工业大学 | For collecting the piezoelectricity electromagnetism composite generator of automotive muffler vibrational energy |
| CN207315616U (en) * | 2017-09-07 | 2018-05-04 | 安徽工程大学 | A kind of piezoelectric stack pump |
| CN207354078U (en) * | 2017-09-12 | 2018-05-11 | 苏州迈客荣自动化技术有限公司 | A kind of diamond shape ceramic driver |
-
2018
- 2018-06-22 CN CN201810649576.9A patent/CN108771784B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2391908A (en) * | 2003-04-10 | 2004-02-18 | Delphi Tech Inc | I.c. engine common rail fuel distribution system |
| CN103037921A (en) * | 2010-04-30 | 2013-04-10 | 拜耳药业股份公司 | Displacement Syringe |
| CN102284955A (en) * | 2011-07-22 | 2011-12-21 | 吉林大学 | Six-freedom degree micro robot based on hybrid drive |
| WO2016019240A1 (en) * | 2014-08-01 | 2016-02-04 | Purdue University | Method and apparatus for dynamic surface control of a piezoelectric fuel injector during rate shaping |
| CN104796036A (en) * | 2015-05-06 | 2015-07-22 | 西安交通大学 | Piezoelectric-piston type actuation device with three-stage displacement amplifying structure and actuation method of piezoelectric-piston type actuation device |
| CN204911976U (en) * | 2015-09-05 | 2015-12-30 | 陈治明 | Piezoelectricity injection formula point spouts valve |
| CN105709311A (en) * | 2016-01-18 | 2016-06-29 | 华南农业大学 | Needleless injector based on piezoelectric conversion and using method of needleless injector |
| CN105763097A (en) * | 2016-04-29 | 2016-07-13 | 西安交通大学 | Stepping piezoelectric actuator with magnetic railing ruler output displacement measurement function and method |
| CN106015685A (en) * | 2016-07-22 | 2016-10-12 | 北京控制工程研究所 | Piezoelectric proportion adjustment valve applicable to high-voltage gas |
| CN207315616U (en) * | 2017-09-07 | 2018-05-04 | 安徽工程大学 | A kind of piezoelectric stack pump |
| CN207354078U (en) * | 2017-09-12 | 2018-05-11 | 苏州迈客荣自动化技术有限公司 | A kind of diamond shape ceramic driver |
| CN107681920A (en) * | 2017-10-31 | 2018-02-09 | 长春工业大学 | For collecting the piezoelectricity electromagnetism composite generator of automotive muffler vibrational energy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049781A (en) * | 2020-09-29 | 2020-12-08 | 长春工业大学 | Passive valve piezoelectric pump with amplifying mechanism |
| CN112196758A (en) * | 2020-10-04 | 2021-01-08 | 长春工业大学 | Passive valve piezoelectric pump with clamp-shaped amplifying mechanism |
| CN112196758B (en) * | 2020-10-04 | 2022-06-17 | 长春工业大学 | Passive valve piezoelectric pump with clamp-shaped amplifying mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108771784B (en) | 2021-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108771784A (en) | A kind of high-precision syringe using piezoelectric stack | |
| CN207145158U (en) | A kind of liquid chromatographic system high pressure pump | |
| CN105879159A (en) | Reusable injector and working method thereof | |
| CN203861700U (en) | Pneumatic magnetic energy storage type needleless injector | |
| CN103977484A (en) | Pneumatic magnetic energy storage needleless syringe | |
| CN211272904U (en) | Negative pressure liquid-discharging nine-needle head | |
| CN201426899Y (en) | Intravenous injection booster | |
| CN209347299U (en) | Continuous syringe | |
| CN208626331U (en) | A kind of electro-medical magnetic-type infusion pump | |
| CN105311711A (en) | Electric micro needle injection apparatus | |
| CN204521595U (en) | Pneumatic needle tubing booster | |
| CN211381962U (en) | Animal husbandry animal doctor is with animal injection boost motor | |
| CN201182799Y (en) | Assistor for intravenous injection | |
| CN202069957U (en) | Boosting device for intravenous injection | |
| CN209153774U (en) | A kind of internal medicine cell tissue collector | |
| CN114247010B (en) | Medical feedback type columnar piezoelectric automatic microinjector | |
| CN203017503U (en) | Angiocardiography injecting roll booster | |
| CN217938830U (en) | Needleless injector | |
| CN209173095U (en) | Combined electrical Magnetic driving micro-infusion pump and its infusion mechanism | |
| CN217391170U (en) | Two-component self-rescue injection device pre-filled with powder and solvent | |
| CN201088750Y (en) | Pedaled infusion pressurizer | |
| CN204170153U (en) | A kind of simple and easy controllable negative pressure suction pump | |
| CN221845682U (en) | Micropump infusion system | |
| CN215608315U (en) | Extension tube of pump injector with speed sensing function | |
| CN113137363B (en) | Valveless double-cavity resonance piezoelectric drive type insulin pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |