CN101574550B - Injection device - Google Patents
Injection device Download PDFInfo
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- CN101574550B CN101574550B CN 200810067084 CN200810067084A CN101574550B CN 101574550 B CN101574550 B CN 101574550B CN 200810067084 CN200810067084 CN 200810067084 CN 200810067084 A CN200810067084 A CN 200810067084A CN 101574550 B CN101574550 B CN 101574550B
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- China
- Prior art keywords
- injection device
- motor
- pedestal
- piezo
- push rod
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Abstract
The invention provides an injection device which comprises a base, an injector kit, a piezoelectric motor and a driving mechanism, wherein the injector kit comprises a syringe arranged on the base anda push rod capable of being movably inserted into one end of the syringe; the piezoelectric motor is arranged on the base and provided with a motor head; the driving mechanism is connected between th e motor head of the piezoelectric motor and the push rod; and when the piezoelectric motor is excited, the motor head selectively drives the driving mechanism along one of two opposite directions so as to selectively push the push rod to advance or retreat. The injection device has simple structure. Because the displacement of the piezoelectric motor under the action of a serial drive pulse is of a nanometer level, higher injection precision can be guaranteed. Because electromagnetic force is not utilized to drive, the injection device is more suitable for some special occasions such as strongmagnetic fields or electromagnetic sensitivity, and the like.
Description
Technical field
The present invention relates to medical instruments field, relate in particular to a kind of injection device.
Background technology
The normal injection device generally comprises motor, reducing gear, screw mandrel, nut, guide post and needle tubing and pushes away seat, after the rotation of motor is slowed down through deceleration device, pass to screw mandrel, screw mandrel cooperates with nut, guide post and nut connect firmly, needle tubing pushes away seat and links to each other with guide post, pushes away seat thereby motion can be passed to needle tubing by the guide post that is connected with nut again, promotes needle tubing.
Yet, the normal injection device of above-mentioned use motor, complex structure is difficult to miniaturization, is difficult to high accuracy control.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of injection device, comprise pedestal; Syringe kits, described syringe kits comprise the syringe that is installed on the pedestal and insert slidably the push rod of syringe one end; Be installed on the piezo-electric motor with motor head on the described pedestal; And be connected in the motor head of described piezo-electric motor and the drive mechanism between the push rod, when described piezo-electric motor is energized, described motor head optionally drives described drive mechanism along the direction in two rightabouts, advances or retreats thereby optionally promote described push rod.
The present invention further is improved to: when described piezo-electric motor was energized, described motor head optionally along clockwise direction or the motion of anticlockwise oval-shaped movement locus.
The beneficial effect that illustrated embodiment of the present invention has is: simple in structure; Because the displacement of piezo-electric motor under the serial drive pulse effect is nanoscale, therefore can guarantee higher injection precision; Because unfavorable electricity consumption magnetically-actuated, the injection device that piezo-electric motor drives more goes for some special occasions, as: the occasions such as high-intensity magnetic field or electromagnetic susceptibility.
Description of drawings
Fig. 1 is the structural representation after injection device that the embodiment of the invention provides removes top cover;
Fig. 2 is that injection device that the embodiment of the invention provides removes structure behind the top cover in the schematic diagram of another angle;
Fig. 3 is the structural representation of the piezo-electric motor of the injection device that provides of the embodiment of the invention;
Fig. 4 is the structural representation after injection device that another embodiment of the present invention provides removes top cover;
Fig. 5 a is the top view after injection device that another embodiment of the present invention provides removes top cover;
Fig. 5 b is that Fig. 5 a is along the cutaway view of C-C line;
Fig. 6 is the schematic appearance of the injection device that provides of another embodiment of the present invention;
Fig. 7 is the structural representation after injection device that yet another embodiment of the invention provides removes top cover and part base.
The specific embodiment
In order to make technical problem to be solved of the present invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Injection device of the present invention comprises pedestal; Syringe kits, described syringe kits comprise the syringe that is installed on the pedestal and insert slidably the push rod of syringe one end; Be installed on the piezo-electric motor with motor head on the described pedestal; And be connected in the motor head of described piezo-electric motor and the drive mechanism between the push rod, when described piezo-electric motor is energized, described motor head optionally drives described drive mechanism along the direction in two rightabouts, advances or retreats thereby optionally promote described push rod.
Fig. 1 is to a kind of embodiment that Figure 2 shows that injection device of the present invention, and it comprises pedestal 10; Syringe kits, described syringe kits comprise the syringe 20 that is installed on the pedestal 10 and slide and insert the push rod 30 of syringe 20 1 ends; Be installed in the piezo-electric motor with motor head 42 40 on the pedestal 10, described drive mechanism comprises the slide block 50 that is slidingly installed on the pedestal 10.Syringe 20 and the push rod 30 of described syringe kits is removably installed in respectively on described pedestal 10 and the slide block 50, and described push rod 30 can be with slide block 50 motions.
Described pedestal 10 offers the second groove 14 along offering the first groove 12 perpendicular to syringe 20 directions along the direction with 12 inclinations of the first groove, and described the second groove 14 communicates with the first groove 12.Described piezo-electric motor 40 is installed in the motor overcoat 44, and described motor overcoat 44 is contained in described the first groove 12, and a skew back of described motor overcoat 44 is to extending a shoulder 44a, and described shoulder 44a enters in the second groove 14.One pre-tightening apparatus 60 is contained in described the second groove 14, and is compressed between the shoulder 44a and pedestal 10 of described motor overcoat 44.Described pre-tightening apparatus 60 is supported the shoulder 44a of motor overcoat 44, thereby produces jacking force so that produce pretightning force between motor head 42 and described slide block 50 sidewalls along vertical pusher 30 directions of motion; Producing lateral pressure along parallel push rods 30 directions of motion rocks to prevent described piezo-electric motor 40.In the present embodiment, described pre-tightening apparatus 60 is spring.Be formed with a guiding mechanism along push rod 30 directions of motion between described pedestal 10 and the slide block 50, described guiding mechanism comprises and forms or be installed on the guide rail 16 on the pedestal 10 and be opened in guide groove 52 on the slide block 50, but guide rail 16 relative slidings be contained in the guide groove 52.Be appreciated that ground, the position of described guide rail and guide groove can exchange, that is: guide rail forms or is installed on the slide block 50, and guide groove is opened on the pedestal 10.Described injection device also comprises a grating 70 and position sensor 72, for detection of the translation position of the slide block 50 that links to each other with injector push-rod 30 and feed back to the driving control device of piezo-electric motor 40.
Figure 3 shows that the structural representation of described piezo-electric motor 40, alternatively, described piezo-electric motor 40 can be United States Patent (USP) 5,453, a kind of motor of describing in No. 653, and its disclosure is incorporated herein by reference at this.Front and back two apparent surfaces of described motor 40 include thin rectangular piezoelectric ceramic piece, and the piezoelectric ceramic piece that is positioned at front surface comprises symmetrically arranged four quadrant electrodes, each other the electrode of angular dependence is become a pair of quadrant electrode: namely mutually 1, mutually 2; The piezoelectric ceramic piece that is positioned at the rear surface is common electrode.When 1 being subjected to serial drive pulse to do the time spent mutually, near resonant frequency, the longitudinal extension of piezo-electric motor 40 and transverse curvature mode are ejected simultaneously, the motor head 42 that is superimposed upon of vibration synthesizes oval-shaped movement locus, correspondingly, slide block 50 can drive push rod 30 advance (or retreating) under the driving of motor head 42; When 2 being subjected to serial drive pulse to do the time spent mutually, near resonant frequency, the longitudinal extension of piezo-electric motor 40 and transverse curvature mode are ejected simultaneously, the motor head 42 that is superimposed upon of vibration synthesizes oval-shaped reciprocal movement locus, correspondingly, slide block 50 can drive push rod 30 and retreat (or advancing) under the driving of motor head 42.Be appreciated that ground, described piezo-electric motor 40 can also be that other have the piezo-electric motor that change driving phase place can change the driving direction characteristic.
Fig. 4 is to the injection device that Figure 6 shows that another embodiment of the present invention provides, the injection device main difference point of the injection device of the present embodiment and previous embodiment is drive mechanism, the drive mechanism of the present embodiment also comprises a thrust amplifying mechanism, described thrust amplifying mechanism comprises disk 80, the gear 82 that connects firmly with disk 80 is with the tooth bar 90 of gear 82 engagements.Described tooth bar 90 connects firmly with push arm 92, and described push arm 92 fixes with the end of push rod 30.One slide block 50 ' is installed on the described pedestal 10.Be formed with a guiding mechanism along push rod 30 directions of motion between described slide block 50 ' and the tooth bar 90, described guiding mechanism comprises the guide groove 16 ' that is opened on the slide block 50 ' and forms or be installed on guide rail 94 on the tooth bar 90, and guide rail 94 slides and is contained in the guide groove 16 '.Be appreciated that ground, the position of described guide rail and guide groove can exchange.Described pedestal 10 comprises base 10a and loam cake 10b, and both lock by modes such as screws.Described thrust amplifying mechanism is installed between base 10a and the loam cake 10b, and it is inboard that described slide block 50 ' is installed on described loam cake 10b.
Pre-tightening apparatus in the present embodiment comprises goring push spring 60a and side pressure spring 60b.Under the thrust of goring push spring 60a, the motor head 42 of piezo-electric motor 40 is close to the edge of described disk 80, and side pressure spring 60b can prevent that piezo-electric motor 40 from rocking.When piezo-electric motor 40 was energized, the motor head 42 of piezo-electric motor 40 optionally driver plate 80 clockwise or counterclockwise rotation correspondingly, advanced or retreats and drive push rods 30 by push arm 92 and advance or retreat thereby gear 82 drives tooth bars 90.In the present embodiment, the diameter of disk 80 approximates greatly four times of gear 82 diameters, and according to lever principle, the driving force of piezo-electric motor 40 motor heads 42 can amplify about four times.Be appreciated that ground, the magnitude relationship of the diameter of disk 80 and gear 82 diameters is not limited to this.
Be appreciated that ground, as shown in Figure 7, described drive mechanism can also increase one or more levels gear drive 100 between gear 82 and tooth bar 90.
The injection device that utilizes piezo-electric motor to drive of the invention described above embodiment, compared to existing technology utilize stepper motor driven injection device, structure is simpler; Because the displacement of piezo-electric motor under the serial drive pulse effect is nanoscale, therefore can guarantee that the injection precision of injection device is higher; Because unfavorable electricity consumption magnetically-actuated, the injection device that piezo-electric motor drives more goes for some special occasions, as: the occasions such as high-intensity magnetic field or electromagnetic susceptibility.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. injection device, comprise pedestal and syringe kits, described syringe kits comprises the syringe that is installed on the pedestal and inserts slidably the push rod of syringe one end, it is characterized in that: described injection device also comprises the piezo-electric motor with motor head that is installed on the described pedestal, and be connected in the motor head of described piezo-electric motor and the drive mechanism between the push rod, when described piezo-electric motor is energized, described motor head optionally along clockwise direction or the motion of anticlockwise oval-shaped movement locus, described motor head optionally drives described drive mechanism along the direction in two rightabouts, advances or retreats thereby optionally promote described push rod; Described injection device also comprises and is formed between described pedestal and the drive mechanism guiding mechanism that arranges along the pushrod movement direction, is used for guiding the slip of described push rod; Described drive mechanism comprises the slide block that is slidingly installed on the described pedestal, and described motor head is close to described slide block, and described push rod is installed on also can be with described slide block movement on the described slide block.
2. injection device as claimed in claim 1 is characterized in that: described guiding mechanism comprises and is formed at one of them guide rail of pedestal and slide block, and is opened in pedestal and slide block another guide groove wherein, and described guide rail relative sliding is contained in the described guide groove.
3. injection device as claimed in claim 1, it is characterized in that: described drive mechanism comprises a thrust amplifying mechanism.
4. injection device as claimed in claim 3, it is characterized in that: described thrust amplifying mechanism comprises disk, the gear that connects firmly with disk and the tooth bar that is subjected to gear drive, described tooth bar and described slide block connect firmly, described motor head is close to the edge of described disk, when described piezo-electric motor was energized, described motor head can drive described disk clockwise or counterclockwise rotation.
5. injection device as claimed in claim 4 is characterized in that: be connected with some grades of gear drives between the described wheel and rack.
6. injection device as claimed in claim 4, it is characterized in that: described drive mechanism comprises that also a push arm is connected between described tooth bar and the push rod, and described guiding mechanism is formed between described tooth bar and the pedestal.
7. injection device as claimed in claim 1, it is characterized in that: described pedestal comprises base and loam cake, and described base is provided with groove, and described piezo-electric motor is contained in the described groove by a motor overcoat.
8. injection device as claimed in claim 7, it is characterized in that: described injection device comprises that also a pre-tightening apparatus is arranged between described pedestal and the motor overcoat, described pre-tightening apparatus produces jacking force so that produce pretightning force between described motor head and the drive mechanism along the vertical pusher direction of motion, produces lateral pressure along the parallel push rods direction of motion and rocks to prevent described piezo-electric motor.
9. injection device as claimed in claim 1, it is characterized in that: described injection device also comprises a grating and position sensor, for detection of the translation position of described push rod and feed back to the driving control device of piezo-electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810067084 CN101574550B (en) | 2008-05-06 | 2008-05-06 | Injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810067084 CN101574550B (en) | 2008-05-06 | 2008-05-06 | Injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101574550A CN101574550A (en) | 2009-11-11 |
| CN101574550B true CN101574550B (en) | 2013-02-13 |
Family
ID=41269708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810067084 Expired - Fee Related CN101574550B (en) | 2008-05-06 | 2008-05-06 | Injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101574550B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8915879B2 (en) | 2010-09-24 | 2014-12-23 | Perqflo, Llc | Infusion pumps |
| US8905972B2 (en) | 2010-11-20 | 2014-12-09 | Perqflo, Llc | Infusion pumps |
| CN103143078B (en) * | 2013-02-04 | 2015-04-08 | 深圳麦科田生物医疗技术有限公司 | Transmission device of injection pump |
| GB201304798D0 (en) * | 2013-03-15 | 2013-05-01 | Univ Dundee | Medical apparatus visualisation |
| CN103344691B (en) * | 2013-06-19 | 2015-06-10 | 北京邮电大学 | Water-drop test system for electrochemical migration experiment |
| BR112016001594A2 (en) * | 2013-07-25 | 2018-05-22 | Liebel Flarsheim Co Llc | piezomotor injector with waveform tuning |
| US10159786B2 (en) | 2014-09-30 | 2018-12-25 | Perqflo, Llc | Hybrid ambulatory infusion pumps |
| US10737016B2 (en) | 2015-02-18 | 2020-08-11 | Medtronic Minimed, Inc. | Ambulatory infusion pumps and reservoir assemblies for use with same |
| US10279107B2 (en) * | 2015-08-20 | 2019-05-07 | Tandem Diabetes Care, Inc. | Drive mechanism for infusion pump |
| CN113058106B (en) * | 2016-02-02 | 2022-11-29 | 美敦力米尼梅德有限公司 | Hybrid ambulatory infusion pump with contactless power transfer |
| WO2017139723A1 (en) | 2016-02-12 | 2017-08-17 | Perqflo, Llc | Ambulatory infusion pumps and assemblies for use with same |
| US10500297B2 (en) * | 2016-11-21 | 2019-12-10 | Asp Global Manufacturing Gmbh | Apparatus and method for detecting improper positioning of removable component of sterilizing system |
| US11260171B2 (en) | 2017-07-04 | 2022-03-01 | Medtronic Minimed, Inc. | Ambulatory infusion pumps and assemblies for use with same |
| CN108815643A (en) * | 2018-04-25 | 2018-11-16 | 秦素红 | A kind of injection control application method of Intelligent medical syringe pump |
| CN108404264A (en) * | 2018-04-25 | 2018-08-17 | 秦素红 | A kind of comprehensive high medical injection pump and its application method |
| CN108568013A (en) * | 2018-04-25 | 2018-09-25 | 秦素红 | Built-in medical injection pump is adjusted in one kind |
| CN112546350B (en) * | 2020-12-11 | 2022-05-24 | 郑州工业应用技术学院 | Fluid injection equipment for remote medical treatment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2065486U (en) * | 1989-02-27 | 1990-11-14 | 罗建明 | Micro automatic syringe |
| CN2110487U (en) * | 1991-12-18 | 1992-07-22 | 董玉辉 | Auxiliary boost for intravenous injection |
| US5453653A (en) * | 1993-07-09 | 1995-09-26 | Nanomotion Ltd. | Ceramic motor |
| CN2493223Y (en) * | 2001-06-21 | 2002-05-29 | 天津市森德科技发展有限公司 | Autoamtic injection controlelr for CT diagnosis system |
| CN101073682A (en) * | 2006-05-17 | 2007-11-21 | 爱尔康公司 | Medicine conveying device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2882648Y (en) * | 2005-12-20 | 2007-03-28 | 汕头市医用设备厂有限公司 | Intravenous injection booster |
-
2008
- 2008-05-06 CN CN 200810067084 patent/CN101574550B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2065486U (en) * | 1989-02-27 | 1990-11-14 | 罗建明 | Micro automatic syringe |
| CN2110487U (en) * | 1991-12-18 | 1992-07-22 | 董玉辉 | Auxiliary boost for intravenous injection |
| US5453653A (en) * | 1993-07-09 | 1995-09-26 | Nanomotion Ltd. | Ceramic motor |
| CN2493223Y (en) * | 2001-06-21 | 2002-05-29 | 天津市森德科技发展有限公司 | Autoamtic injection controlelr for CT diagnosis system |
| CN101073682A (en) * | 2006-05-17 | 2007-11-21 | 爱尔康公司 | Medicine conveying device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101574550A (en) | 2009-11-11 |
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Granted publication date: 20130213 Termination date: 20180506 |