CN104147657B - Injection pump and driving device thereof - Google Patents
Injection pump and driving device thereof Download PDFInfo
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- CN104147657B CN104147657B CN201310180038.7A CN201310180038A CN104147657B CN 104147657 B CN104147657 B CN 104147657B CN 201310180038 A CN201310180038 A CN 201310180038A CN 104147657 B CN104147657 B CN 104147657B
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- slide block
- guide shaft
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- hole
- wing
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Abstract
A driving device of an injection pump comprises a push-pull box assembly, a support assembly and a slider assembly. The push-pull box assembly comprises a shell used for being connected with a piston rod of an injector and a guide shaft, and one end of the guide shaft is fixed to the shell. The support assembly comprises a support with one end provided with a guide shaft hole, and the guide shaft penetrates through the guide shaft hole. The slider assembly comprises a slider connected with one end of the guide shaft of the push-pull box assembly and used for driving the push-pull box assembly to move, a partition nut and a lead screw used for driving the slider to move linearly, the partition nut is provided with a first wing and a second wing, one end of the first wing is hinged to one end of the second wing, the partition nut is fixed in an installing hole of the slider and meshed with the lead screw, the lead screw is rotationally arranged on the support, and the lead screw is parallel to the guide shaft of the push-pull box assembly. Due to the injection pump and the driving device of the injection pump, mechanical accuracy can be well guaranteed.
Description
Technical field
The application is related to medical instruments field and in particular to a kind of syringe pump and its driving means.
Background technology
Medicine used by when clinic needs to be injected by intravenous route, and dosage must very accurately, total amount very little,
In the case that injection speed need are slow or constant for a long time, generally adopt syringe pump.
Syringe pump is mainly made up of controller, stepper motor and driving means, and driving means include push-and-pull case assembly, support
Assembly and slide block assembly.Push-and-pull case assembly is fixedly connected with the piston rod of syringe, and controller is according to setup control stepper motor
The leading screw driving slide block assembly rotates, and leading screw drives the slide block of slide block assembly again, and slide block drives push-and-pull case assembly so that syringe is lived
Stopper rod moves, thus realizing the injection of syringe.Control the rotary speed of leading screw by setting the rotating speed of stepper motor, thus
The adjustment fltting speed to syringe piston rod for the push-and-pull case assembly, controls injection speed.
Clinically it is contemplated that the security of drug injection, it is necessary to assure syringe pump has enough mechanical precisions.Cause
This, the mechanical precision how improving syringe pump has become an important research direction of this area.
Content of the invention
This application provides a kind of high syringe pump of mechanical precision and its driving means.
A kind of driving means of syringe pump that the application provides include：Push-and-pull case assembly, bracket component and slide block assembly.
Described push-and-pull case assembly includes shell and guide shaft, the piston rod of described cage connection syringe, and the one of described guide shaft
End is fixed on shell.
Described bracket component includes the support that one end is provided with guide shaft hole, and described guide shaft passes through described guide shaft hole.
Described slide block assembly includes being connected to drive the cunning of sliding box component movement with guide shaft one end of push-and-pull case assembly
Block, it is fixed on affiliated slide block（301）The subdivision nut of installation in the hole and for driving the leading screw that slide block moves along a straight line, described
Subdivision nut has first wing and second wing, and one end of described first wing and one end of second wing are hinged, described subdivision nut with
Leading screw engages, and described leading screw is rotatably arranged on described support, and described leading screw is parallel to the guide shaft of push-and-pull case assembly.
In one embodiment, described push-and-pull case assembly also includes drive shaft and the squeezing handle for driving drive shaft turns, institute
State squeezing handle and be arranged on inside the shell, the rotating shaft of squeezing handle is connected with one end of drive shaft；Described slide block assembly also includes cuing open for controlling
Divide nut engagement or detached clutch shaft, described clutch shaft is located in subdivision nut and is connected with the drive shaft cooperation of push-and-pull case assembly
Connect.Further, described bracket component also includes support set, and described support set has set hole corresponding with guide shaft hole, described push-and-pull
The guide shaft of case assembly passes through described set hole and guide shaft hole.Further, described bracket component also includes the axis of guide, the described axis of guide
One end is fastened on the installation in the hole of support set, and the other end is fixed on one end of support；Described slide block passes through gathering sill and institute
State the axis of guide to be slidably connected, the described axis of guide is parallel to leading screw.
In one embodiment, described slide block assembly also includes rotating shaft, one end of first wing and second of described subdivision nut
One end of the wing is hinged by described rotating shaft, and described subdivision nut is fixed on the installation in the hole of slide block by described rotating shaft.
In one embodiment, one end of the leading screw of described slide block assembly be connected to that support has guide shaft hole by axle sleeve one
End, the other end is connected to the other end of support by flange bearing.
In one embodiment, described slide block assembly also includes connecting plate, and described connecting plate is fixed by screws on slide block,
Pin on connecting plate passes through the through hole on installing hole and guide shaft on slide block that guide shaft is fixed on slide block.
In one embodiment, described slide block assembly also includes pressing plate and the spring for providing clamping force for subdivision nut,
Described pressing plate is fixed on slide block, and described spring is fixed between pressing plate and subdivision nut.
Preferably, the support of described bracket component adopts sheet metal component.
Accordingly, present invention also provides a kind of syringe pump, described syringe pump includes above-mentioned driving means.
In a kind of syringe pump that the application provides and its driving means, slide block assembly adopts engaging of leading screw and subdivision nut
The convert rotational motion of leading screw is the linear motion of slide block, slide block drives the work of syringe by driving push-and-pull case assembly again
Stopper rod, thus realize the injection of syringe.Wherein, after leading screw is engaged with subdivision nut, subdivision nut can live silk by clad completely
Thick stick so that leading screw drives the active force of slide block more uniform, along with the orientation of guide shaft is so that the fortune of syringe piston rod
Dynamic more steady, thus ensureing the mechanical precision of syringe pump.
Brief description
Fig. 1 is the structure chart that a kind of embodiment of the application injects pump drive；
Fig. 2 is the Structure explosion diagram that a kind of embodiment of the application injects pump drive；
Fig. 3 is the structural representation that a kind of embodiment of the application injects subdivision nut in pump drive；
Fig. 4 is the connection diagram that a kind of embodiment of the application injects guide shaft and slide block in pump drive.
Specific embodiment
This application provides a kind of syringe pump and its driving means, this syringe pump is by controller, stepper motor and driving dress
Put composition, driving means include push-and-pull case assembly, bracket component and slide block assembly.Push-and-pull case assembly is solid with the piston rod of syringe
Fixed connection, controller rotates according to the leading screw of setup control driving stepper motor slide block assembly, and leading screw drives slide block assembly again
Slide block, slide block drives push-and-pull case assembly so that syringe piston rod is moved, thus realizing the injection of syringe.By setting stepping electricity
The rotating speed of machine, to control the rotary speed of leading screw, thus adjusting the fltting speed to syringe piston rod for the push-and-pull case assembly, controls
Injection speed.
In order to ensure the mechanical precision of syringe pump, in the application, slide block assembly will with engaging of subdivision nut using leading screw
The convert rotational motion of leading screw is the linear motion of slide block, and slide block drives the piston of syringe by driving push-and-pull case assembly again
Bar, thus realize the injection of syringe.Wherein, the cooperation of squeezing handle, drive shaft and clutch shaft can be realized controlling subdivision nut
Engagement or separation, are easy to loading and the adjustment of syringe；After leading screw is engaged with subdivision nut, subdivision nut can clad completely be lived
Leading screw so that leading screw drives the active force of slide block more uniform, along with the orientation of the axis of guide and guide shaft is so that syringe
The motion of piston rod is more steady, thus ensureing the mechanical precision of syringe pump.
Combine accompanying drawing below by specific embodiment the application is described in further detail.
Refer to Fig. 1 to Fig. 4, present embodiments provide a kind of injection pump drive, including push-and-pull case assembly 10, support
Assembly 20 and slide block assembly 30.
Push-and-pull case assembly 10 includes the piston rod for connecting syringe（Not shown）Shell 101 and guide shaft 104, guide shaft
104 one end is fixed on shell 101.
Bracket component 20 includes the support 201 that one end is provided with guide shaft hole 203, and guide shaft 104 passes through guide shaft hole 203.
Slide block assembly 30 includes being connected with guide shaft 104 one end of push-and-pull case assembly 10 and being used for driving push-and-pull case assembly 10 to transport
Dynamic slide block 301, subdivision nut 302 and the leading screw 305 for driving slide block 301 to move along a straight line.Subdivision nut 302 has
First wing 3021 and second wing 3022, one end of one end of first wing 3021 and second wing 3022 is hinged, and subdivision nut 302 is fixing
In the installation in the hole of slide block 301, subdivision nut 302 is engaged with leading screw 305, and leading screw 305 is rotatably arranged on support 201, leading screw
305 parallel to push-and-pull case assembly 10 guide shaft 104.
In order to realize controlling engagement or the separation of subdivision nut 302, it is easy to loading and the adjustment of syringe, the present embodiment
In, push-and-pull case assembly 10 also includes drive shaft 102 and the squeezing handle 103 for driving drive shaft 102 to rotate, and squeezing handle 103 is arranged on
In shell 101, the rotating shaft 1031 of squeezing handle 103 is connected with one end of drive shaft 102.Slide block assembly 30 is also included for controlling subdivision
Nut 302 engages or detached clutch shaft 304, and clutch shaft 304 is located in subdivision nut 302 and the driving with push-and-pull case assembly 10
Axle 102 is connected.The cooperation of squeezing handle 103, drive shaft 102 and clutch shaft 304 can be realized controlling the engagement of subdivision nut 302
Or separate, it is easy to loading and the adjustment of syringe.It should be appreciated that in other embodiments, can also be realized using alternate manner
Control engagement or the separation of subdivision nut 302.
Preferably, bracket component 20 also includes support set 204, and support set 204 has set hole corresponding with guide shaft hole 203,
The guide shaft 104 of push-and-pull case assembly 10 passes through set hole and the guide shaft hole 203 of support set 204.Support set 204 can be to guide shaft 104
The effect of guiding, and make guide shaft 104 more steady in motion, thus ensureing the whole mechanical precision injecting pump drive.
In the present embodiment, in order to more accurately fix the direction of motion of slide block 301, bracket component 20 also includes the axis of guide
202, one end of the axis of guide 202 is fastened on the installation in the hole of support set 204, and the other end is fixed on one end of support 201；Sliding
Block 301 is slidably connected with the axis of guide 202 by gathering sill, and the axis of guide 202 is parallel to leading screw 305.It should be appreciated that the present embodiment
In, the axis of guide 202 has two, in other embodiments it is also possible to fix the motion side of slide block 301 otherwise
To, for example, setting sliding tray in support 201, slide block 301 has this sliding tray embedded the projection that can slide along sliding tray
Part.
In the present embodiment, slide block assembly 30 also includes rotating shaft 303, one end of first wing 3021 of subdivision nut 302 and the
One end of two wings 3022 is hinged by rotating shaft 303, and subdivision nut 302 is fixed on the installation in the hole of slide block 301 by rotating shaft 303.
In the present embodiment, the guide shaft 104 of push-and-pull case assembly 10 is the hollow pipe of hollow, and drive shaft 102 runs through to be arranged on to be led
In axle 104, one end of the support 201 of bracket component 20 is provided with guide shaft hole 203, and guide shaft 104 passes through guide shaft hole 203.
In an instantiation, push-and-pull case assembly 10 also includes shaft coupling 105, and shaft coupling is passed through in the rotating shaft 1031 of squeezing handle 103
Device 105 is connected with one end of drive shaft 102, and one end of shaft coupling 105 is connected with the inner hole of the rotating shaft 1031 of squeezing handle 103,
Axis hole on the other end connects one end of drive shaft 102, and squeezing handle 103 can drive drive shaft 102 to rotate when rotating.
Specifically, one end of the leading screw 305 of slide block assembly 30 is connected to support 201 by axle sleeve 306 and has guide shaft hole 203
One end, the other end is connected to the other end of support 201 by flange bearing 307, thus ensureing that leading screw can smoothly rotate.
Refer to Fig. 3, in the present embodiment, one end that clutch shaft 304 is located in subdivision nut 302 has for driving subdivision
Nut 302 303 rotates, controls subdivision nut 302 to engage or detached first fulcrum 3041 and the second fulcrum 3042 around the shaft, the
One fulcrum 3041 and the second fulcrum 3042 are the fulcrum of clutch shaft 304 one end projection.One end fits due to clutch shaft 304 connect
In drive shaft 102, therefore, it can control clutch shaft 304 by rotating squeezing handle 103, thus controlling subdivision nut 302 to engage
Or separate, it is easy to loading and the position adjustment of syringe.
In the present embodiment, slide block assembly 30 also includes connecting plate 308, and connecting plate 308 is fixed on slide block by screw 3081
On 301, the pin 3082 on connecting plate 308 passes through the through hole 1041 on installing hole 3011 and guide shaft 104 on slide block 301 will lead
Axle 104 is fixed on slide block 301.Because connecting plate 308 is fixing with guide shaft 104 by slide block 301, slide block 301 can in motion
Push-and-pull case assembly 10 is more firmly driven to move.
There is provided detached power because one end that clutch shaft 304 is located at subdivision nut 302 is only subdivision nut 302, therefore,
In order to ensure that subdivision nut 302 can be tightly engaged with leading screw 305, the slide block assembly 30 in the present embodiment also includes pressing plate 309
With for the spring 310 for subdivision nut 302 offer clamping force, pressing plate 309 is fixed by screws on slide block 301, spring 310
It is fixed between pressing plate 309 and subdivision nut 302, spring 310 is in just can provide folder for subdivision nut 302 during compressive state
Clamp force.It should be appreciated that because subdivision nut 302 has both wings, therefore, two wings of subdivision nut 302 be respectively provided with corresponding
Spring is providing clamping force.The both wings of subdivision nut 302 belong to symmetrical structure, and subdivision nut 302 can when engaging with leading screw 305
Leading screw 305 is lived with complete clad so that when leading screw 305 rotates, the power that slide block 301 is subject to is more uniform, thus improving driving dress
The mechanical precision put.
Preferably, the support 201 of the present embodiment medium-height trestle assembly 20 adopts sheet metal component, compared to universal aluminium section bar, adopts
With sheet metal component so that the manufacture of support 201 is convenient, meanwhile, the sheet metal component of integration is it is also possible that whole device
Structure is compacter.
When subdivision nut 302 and leading screw 305 are in engagement, leading screw 305 rotates and then carries movable slider 301 along the axis of guide
202 direction moves along a straight line, thus driving push-and-pull case assembly 10 to move along a straight line.
When subdivision nut 302 and leading screw 305 are in released state, push-and-pull case assembly 10 band movable slider 301 is along the axis of guide
202 direction moves along a straight line, thus realizing the position adjustment of slide block 301.
It should be appreciated that some parts in the syringe pump of the present embodiment offer and its driving means can be fixed by screw
Linking together or be fixed together otherwise, for example weld.
Therefore, in the syringe pump using the driving means in the present embodiment, the cooperation of squeezing handle, drive shaft and clutch shaft can
To realize controlling engagement or the separation of subdivision nut, it is easy to loading and the adjustment of syringe；Support set can play guiding to guide shaft
Effect, and make guide shaft motion when more steady, after leading screw is engaged with subdivision nut, subdivision nut can live silk by clad completely
Thick stick so that leading screw drives the active force of slide block more uniform, along with the orientation of the axis of guide is so that syringe piston rod
Motion is more steady, thus ensureing the mechanical precision of syringe pump.
Above content is further description the application made with reference to specific embodiment it is impossible to assert this Shen
Being embodied as please is confined to these explanations.For the application person of an ordinary skill in the technical field, do not taking off
On the premise of the present application design, some simple deduction or replace can also be made.
Claims (10)
1. a kind of driving means of syringe pump are it is characterised in that include：
Push-and-pull case assembly (10), described push-and-pull case assembly (10) includes shell (101) and guide shaft (104), and described shell (101) is even
Connect the piston rod of syringe, one end of described guide shaft (104) is fixed on shell (101)；
Bracket component (20), described bracket component (20) includes the support (201) that one end is provided with guide shaft hole (203), described leads
Axle (104) passes through described guide shaft hole (203)；
Slide block assembly (30), described slide block assembly (30) includes being connected to guide shaft (104) one end of push-and-pull case assembly (10)
Drive push-and-pull case assembly (10) slide block (301) moving, the subdivision nut of the installation in the hole being fixed on affiliated slide block (301)
(302) and be used for the leading screw (305) driving slide block (301) to move along a straight line, described subdivision nut (302) has first wing
(3021) and the second wing (3022), one end of described first wing (3021) and one end of second wing (3022) are hinged, described subdivision
First wing (3021) of nut (302) and second wing (3022) are engaged with leading screw (305), and leading screw (305), institute are stated in clad residence
State leading screw (305) to be rotatably arranged on described support (201), described leading screw (305) is parallel to the guide shaft of push-and-pull case assembly (10)
(104).
2. device as claimed in claim 1 it is characterised in that：
Described push-and-pull case assembly (10) also includes drive shaft (102) and is used for the squeezing handle (103) driving drive shaft (102) to rotate,
Described squeezing handle (103) is arranged in shell (101), and the rotating shaft (1031) of squeezing handle (103) is connected with one end of drive shaft (102)；
Described slide block assembly (30) also include for control subdivision nut (302) engagement or detached clutch shaft (304), described from
Sympodium (304) is located in subdivision nut (302) and is connected with the drive shaft (102) of push-and-pull case assembly (10).
3. device as claimed in claim 2 is it is characterised in that described bracket component (20) also includes support set (204), described
Support set (204) has a set hole corresponding with guide shaft hole (203), and the guide shaft (104) of described push-and-pull case assembly (10) passes through described
Set hole and guide shaft hole (203).
4. device as claimed in claim 3 is it is characterised in that described bracket component (20) also includes the axis of guide (202), described
One end of the axis of guide (202) is fastened on the installation in the hole of support set (204), and the other end is fixed on one end of support (201)；
Described slide block (301) is slidably connected with the described axis of guide (202) by gathering sill, and the described axis of guide (202) is parallel to leading screw
(305).
5. device as claimed in claim 1 is it is characterised in that described slide block assembly (30) also includes rotating shaft (303), described cuts open
Divide one end of first wing (3021) of nut (302) hinged by described rotating shaft (303) with one end of second wing (3022), described
Subdivision nut (302) is fixed on the installation in the hole of slide block (301) by described rotating shaft (303).
6. device as claimed in claim 1 is it is characterised in that one end of the leading screw (305) of described slide block assembly (30) is passed through
Axle sleeve (306) is connected to one end that support (201) has guide shaft hole (203), and the other end is connected to by flange bearing (307) and props up
The other end of frame (201).
7. device as claimed in claim 1 is it is characterised in that described slide block assembly (30) also includes connecting plate (308), described
Connecting plate (308) is fixed on slide block (301) by screw (3081), and the pin (3082) on connecting plate (308) passes through slide block
(301) guide shaft (104) is fixed on slide block (301) through hole (1041) on installing hole (3011) and guide shaft (104) on.
8. device as claimed in claim 1 or 2 is it is characterised in that described slide block assembly (30) also includes pressing plate (309) and uses
In the spring (310) providing clamping force for subdivision nut (302), described pressing plate (309) is fixed on slide block (301), described bullet
Spring (310) is fixed between pressing plate (309) and subdivision nut (302).
9. the device as described in any one of claim 1-7 is it is characterised in that the support (201) of described bracket component (20) is adopted
Use sheet metal component.
10. a kind of syringe pump is it is characterised in that described syringe pump includes the driving means as described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310180038.7A CN104147657B (en) | 2013-05-15 | 2013-05-15 | Injection pump and driving device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310180038.7A CN104147657B (en) | 2013-05-15 | 2013-05-15 | Injection pump and driving device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104147657A CN104147657A (en) | 2014-11-19 |
| CN104147657B true CN104147657B (en) | 2017-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310180038.7A Active CN104147657B (en) | 2013-05-15 | 2013-05-15 | Injection pump and driving device thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104147657B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673475B (en) * | 2014-11-21 | 2018-05-15 | 深圳迈瑞科技有限公司 | One kind pump locking device |
| CN105066860B (en) * | 2015-08-04 | 2017-12-26 | 深圳市仕浦电气有限公司 | The slide position testing agency of medical injection pump and method |
| EP3509667B2 (en) | 2016-09-07 | 2023-04-26 | Fresenius Vial SAS | Infusion device having a clutching device |
| CN109481782A (en) * | 2018-12-29 | 2019-03-19 | 深圳市好克医疗仪器股份有限公司 | Syringe pump |
| TWI715254B (en) * | 2019-10-18 | 2021-01-01 | 美商康華全球生技股份有限公司 | Smart medicine injection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101970031B (en) * | 2008-03-14 | 2013-01-09 | 泰尔茂株式会社 | Syringe pump and method of controlling the same |
| CN201524307U (en) * | 2008-06-03 | 2010-07-14 | 惠州益邦科技有限公司 | Multifunctional injection pump with TCI learning mode |
| JP5508093B2 (en) * | 2010-03-30 | 2014-05-28 | テルモ株式会社 | Syringe pump |
| JP5996843B2 (en) * | 2011-03-25 | 2016-09-21 | テルモ株式会社 | Infusion pump |
| CN102887473B (en) * | 2012-09-21 | 2014-03-12 | 深圳圣诺医疗设备有限公司 | Sliding block control structure and injection pump advancing device comprising same |
| CN203303432U (en) * | 2013-05-15 | 2013-11-27 | 深圳市深科医疗器械技术开发有限公司 | Injection pump and drive device thereof |
-
2013
- 2013-05-15 CN CN201310180038.7A patent/CN104147657B/en active Active
Also Published As
| Publication number | Publication date |
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| CN104147657A (en) | 2014-11-19 |
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Address after: MINDRAY No. 1203 518000 light production base in Guangdong province Shenzhen Guangming Street South Yu Tong Road No. 2 building, 5 floor Patentee after: Shenzhen MINDRAY Technology Co., Ltd. Address before: 518023 building 7, building A, Teng Bang building, north of Qingshui River Road, Luohu District, Guangdong, Shenzhen Patentee before: Shengke Medical Instrument Technology Development Co., Ltd., Shenzhen City |