CN203303432U - Injection pump and drive device thereof - Google Patents
Injection pump and drive device thereof Download PDFInfo
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- CN203303432U CN203303432U CN2013202651934U CN201320265193U CN203303432U CN 203303432 U CN203303432 U CN 203303432U CN 2013202651934 U CN2013202651934 U CN 2013202651934U CN 201320265193 U CN201320265193 U CN 201320265193U CN 203303432 U CN203303432 U CN 203303432U
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- slide block
- guide shaft
- assembly
- shaft
- support
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Abstract
The utility model provides an injection pump and a drive device of the injection pump. The drive device of the injection pump comprises a push-and-pull box assembly, a support assembly and a sliding block assembly. The push-and-pull box assembly comprises a shell and a guide shaft, the shell is used for being connected with a piston rod of an injector, and one end of the guide shaft is fixed on the shell. The support assembly comprises a support, a guide shaft hole is formed in one end of the support, and the guide shaft penetrates through the guide shaft hole. The sliding block assembly comprises a sliding block, a subdivision nut and a screw rod, wherein the sliding block is connected with one end of the guide shaft of the push-and-pull box assembly and used for diving the push-and-pull box assembly to move, the screw rod is used for driving the sliding block to move along a straight line, the subdivision 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 subdivision nut is fixed in an installing hole of the sliding block and meshed with the screw rod, and the screw rod is rotationally arranged on the support and parallel to the guide shaft of the push-and-pull box assembly. The injection pump and the driving device of the injection pump can well guarantee mechanical accuracy.
Description
Technical field
The application relates to medical instruments field, is specifically related to a kind of syringe pump and driving device thereof.
Background technology
When clinical medicine used need to be injected by intravenous route, and in the situation that dosage must be very accurately, total amount is very little, injection speed needs slowly or long-time constant, usually adopts syringe pump.
Syringe pump mainly consists of controller, motor and driving device, and driving device comprises sliding box assembly, carriage assembly and slide block assembly.The sliding box assembly is fixedly connected with the piston rod of syringe, controller rotates according to the leading screw of setup control step motor drive slide block assembly, leading screw drives the slide block of slide block assembly again, and slide block drives the sliding box assembly and makes the syringe piston rod motion, thereby realizes the injection of syringe.By the rotating speed of setting motor, control the rotary speed of leading screw, thereby adjust the fltting speed of sliding box assembly to syringe piston rod, control injection speed.
Clinically, consider the safety of drug injection, must guarantee that syringe pump has enough mechanical precisions.Therefore, the mechanical precision that how to improve syringe pump has become an important research direction of this area.
Summary of the invention
The application provides syringe pump and the driving device thereof that a kind of mechanical precision is high.
The driving device of a kind of syringe pump that the application provides comprises: sliding box assembly, carriage assembly and slide block assembly.
Described sliding box assembly comprises shell and guide shaft, and described shell connects the piston rod of syringe, and an end of described guide shaft is fixed on shell.
Described carriage assembly comprises that an end is provided with the support in guide shaft hole, and described guide shaft passes described guide shaft hole.
Described slide block assembly comprise with guide shaft one end of sliding box assembly, be connected be used to the slide block that drives sliding box assembly motion, be fixed on affiliated slide block (301) installing hole in the subdivision nut and the leading screw moved along a straight line be used to driving slide block, described subdivision nut has first wing and second wing, one end of described first wing and an end of second wing are hinged, described subdivision nut and leading screw engagement, described leading screw rotates and is arranged on described support, and described leading screw is parallel to the guide shaft of sliding box assembly.
In one embodiment, described sliding box assembly also comprises driving shaft and be used to driving the squeezing handle of drive shaft turns, in the enclosure, the rotating shaft of squeezing handle is connected with an end of driving shaft in described squeezing handle setting; Described slide block assembly also comprises that described clutch shaft is positioned at the subdivision nut and is connected with the driving shaft of sliding box assembly be used to the clutch shaft of controlling the engagement of subdivision nut or separating.Further, described carriage assembly also comprises support set, and described support set has the trepanning corresponding with the guide shaft hole, and the guide shaft of described sliding box assembly passes described trepanning and guide shaft hole.Further, described carriage assembly also comprises the axis of guide, and an end of the described axis of guide is fastened in the installing hole of support set, and the other end is fixed on an end of support; Described slide block is slidably connected by gathering sill and the described axis of guide, and the described axis of guide is parallel to leading screw.
In one embodiment, described slide block assembly also comprises rotating shaft, and an end of first wing of described subdivision nut and an end of second wing are hinged by described rotating shaft, and described subdivision nut is fixed in the installing hole of slide block by described rotating shaft.
In one embodiment, an end of the leading screw of described slide block assembly is connected to by axle sleeve the end that support has the guide shaft hole, and the other end is connected to the other end of support by flange bearing.
In one embodiment, described slide block assembly also comprises connecting plate, and described connecting plate is fixed by screws on slide block, and the pin on connecting plate passes installing hole on slide block and the through hole on guide shaft is fixed on guide shaft on slide block.
In one embodiment, described slide block assembly also comprises pressing plate and be used to the subdivision nut that the spring of clamping force is provided, and described pressing plate is fixed on slide block, and described spring is fixed between pressing plate and subdivision nut.
Preferably, the support of described carriage assembly adopts sheet metal component.
Accordingly, the application also provides a kind of syringe pump, and described syringe pump comprises above-mentioned driving device.
In a kind of syringe pump and driving device thereof that the application provides, slide block assembly adopts the engagement of leading screw and subdivision nut rotatablely moving of leading screw to be converted into to the rectilinear motion of slide block, slide block drives the piston rod of syringe by driving the sliding box assembly again, thereby realizes the injection of syringe.Wherein, after leading screw and the engagement of subdivision nut, subdivision nut clad is fully lived leading screw, make the active force of leading screw driving slide block more even, add the orientation of guide shaft, make the motion of syringe piston rod more steady, thereby guarantee the mechanical precision of syringe pump.
The accompanying drawing explanation
Fig. 1 is the structure chart of a kind of embodiment syringe pump of the application driving device;
Fig. 2 is the structure explosive view of a kind of embodiment syringe pump of the application driving device;
Fig. 3 is the structural representation of subdivision nut in a kind of embodiment syringe pump of the application driving device;
Fig. 4 is the connection diagram of guide shaft and slide block in a kind of embodiment syringe pump of the application driving device.
The specific embodiment
The application provides a kind of syringe pump and driving device thereof, and this syringe pump consists of controller, motor and driving device, and driving device comprises sliding box assembly, carriage assembly and slide block assembly.The sliding box assembly is fixedly connected with the piston rod of syringe, controller rotates according to the leading screw of setup control step motor drive slide block assembly, leading screw drives the slide block of slide block assembly again, and slide block drives the sliding box assembly and makes the syringe piston rod motion, thereby realizes the injection of syringe.By the rotating speed of setting motor, control the rotary speed of leading screw, thereby adjust the fltting speed of sliding box assembly to syringe piston rod, control injection speed.
In order to guarantee the mechanical precision of syringe pump, in the application, slide block assembly adopts the engagement of leading screw and subdivision nut rotatablely moving of leading screw to be converted into to the rectilinear motion of slide block, and slide block drives the piston rod of syringe by driving the sliding box assembly again, thereby realizes the injection of syringe.Wherein, the cooperation of squeezing handle, driving shaft and clutch shaft can realize controlling the engagement of subdivision nut or separating, and is convenient to loading and the adjustment of syringe; After leading screw and the engagement of subdivision nut, subdivision nut clad is fully lived leading screw, makes the active force of leading screw driving slide block more even, adds the orientation of the axis of guide and guide shaft, make the motion of syringe piston rod more steady, thereby guarantee the mechanical precision of syringe pump.
Below by the specific embodiment, by reference to the accompanying drawings the application is described in further detail.
Please refer to Fig. 1 to Fig. 4, the present embodiment provides a kind of syringe pump driving device, comprises sliding box assembly 10, carriage assembly 20 and slide block assembly 30.
In order to realize controlling engagement or the separation of subdivision nut 302, be convenient to loading and the adjustment of syringe, in the present embodiment, sliding box assembly 10 also comprises driving shaft 102 and the squeezing handle 103 rotated be used to driving driving shaft 102, squeezing handle 103 is arranged in shell 101, and the rotating shaft 1031 of squeezing handle 103 is connected with an end of driving shaft 102.Slide block assembly 30 also comprises that clutch shaft 304 is positioned at subdivision nut 302 and is connected with the driving shaft 102 of sliding box assembly 10 be used to the clutch shaft 304 of controlling 302 engagements of subdivision nut or separating.The cooperation of squeezing handle 103, driving shaft 102 and clutch shaft 304 can realize controlling the engagement of subdivision nut 302 or separating, and is convenient to loading and the adjustment of syringe.Should be appreciated that in other embodiments, can also adopt alternate manner to realize controlling engagement or the separation of subdivision nut 302.
Preferably, carriage assembly 20 also comprises support set 204, and support set 204 has the trepanning corresponding with guide shaft hole 203, and the guide shaft 104 of sliding box assembly 10 passes trepanning and the guide shaft hole 203 of support set 204.Support set 204 can play guiding to guide shaft 104, and makes guide shaft 104 more steady when motion, thereby guarantees the mechanical precision of whole syringe pump driving device.
In the present embodiment, for the more fixing direction of motion of slide block 301, carriage assembly 20 also comprises the axis of guide 202, and an end of the axis of guide 202 is fastened in the installing hole of support set 204, and the other end is fixed on an end of support 201; Slide block 301 is slidably connected by gathering sill and the axis of guide 202, and the axis of guide 202 is parallel to leading screw 305.Should be appreciated that in the present embodiment, the axis of guide 202 has two, in other embodiments, also the direction of motion of slide block 301 can be fixed by alternate manner, for example, in support 201, sliding tray is set, slide block 301 has this sliding tray of embedding also can be along the bossing of sliding tray slip.
In the present embodiment, slide block assembly 30 also comprises rotating shaft 303, and an end of first wing 3021 of subdivision nut 302 and an end of second wing 3022 are hinged by rotating shaft 303, and subdivision nut 302 is fixed in the installing hole of slide block 301 by rotating shaft 303.
In the present embodiment, the guide shaft 104 of sliding box assembly 10 is the hollow pipe of hollow, and driving shaft 102 runs through and is arranged in guide shaft 104, and an end of the support 201 of carriage assembly 20 is provided with guide shaft hole 203, and guide shaft 104 passes guide shaft hole 203.
In an instantiation, sliding box assembly 10 also comprises shaft coupling 105, the rotating shaft 1031 of squeezing handle 103 is connected with an end of driving shaft 102 by shaft coupling 105, the endoporus of one end of shaft coupling 105 and the rotating shaft 1031 of squeezing handle 103 is connected, axis hole on the other end connects an end of driving shaft 102, and squeezing handle 103 can drive driving shaft 102 and rotate while rotating.
Concrete, an end of the leading screw 305 of slide block assembly 30 is connected to by axle sleeve 306 end that support 201 has guide shaft hole 203, and the other end is connected to the other end of support 201 by flange bearing 307, thereby guarantees that leading screw can rotate reposefully.
Please refer to Fig. 3, in the present embodiment, the end that clutch shaft 304 is positioned at subdivision nut 302 has the fulcrum risen for clutch shaft 304 1 distal process be used to driving subdivision nut 302 303 rotations around the shaft, the first fulcrum 3041 of controlling 302 engagements of subdivision nut or separation and the second fulcrum 3042, the first fulcrums 3041 and the second fulcrum 3042.Because an end of clutch shaft 304 is connected on driving shaft 102, therefore, can control clutch shaft 304 by rotation squeezing handle 103, thereby control 302 engagements of subdivision nut or separate, be convenient to loading and the position adjustment of syringe.
In the present embodiment, slide block assembly 30 also comprises connecting plate 308, connecting plate 308 is fixed on slide block 301 by screw 3081, and the pin 3082 on connecting plate 308 passes installing hole 3011 on slide block 301 and the through hole 1041 on guide shaft 104 is fixed on guide shaft 104 on slide block 301.Because connecting plate 308 is fixing with guide shaft 104 by slide block 301, slide block 301 can more firmly drive 10 motions of sliding box assembly when motion.
An end that is positioned at subdivision nut 302 due to clutch shaft 304 can only provide for subdivision nut 302 power of separation, therefore, in order to guarantee that subdivision nut 302 can closely mesh with leading screw 305, slide block assembly 30 in the present embodiment also comprises pressing plate 309 and is used to subdivision nut 302 that the spring 310 of clamping force is provided, pressing plate 309 is fixed by screws on slide block 301, spring 310 is fixed between pressing plate 309 and subdivision nut 302, just can provide clamping force for subdivision nut 302 when spring 310 is in compressive state.Should be appreciated that because subdivision nut 302 has both wings, therefore, two wings of subdivision nut 302 have respectively corresponding spring provides clamping force.The both wings of subdivision nut 302 belong to symmetrical structure, subdivision nut 302 with leading screw 305 engagement the time fully clad live leading screw 305, while making leading screw 305 rotate, the power that slide block 301 is subject to is more even, thus the mechanical precision of raising driving device.
Preferably, the support 201 of the present embodiment medium-height trestle assembly 20 adopts sheet metal component, and than general aluminium section bar, the employing sheet metal component can be so that the manufacture of support 201 be convenient, and simultaneously, integrated sheet metal component also can be so that the structure of whole device be compacter.
When subdivision nut 302 and leading screw 305 were in engagement, leading screw 305 rotates did rectilinear motion with movable slider 301 along the direction of the axis of guide 202, does rectilinear motion thereby drive sliding box assembly 10.
When subdivision nut 302 and leading screw 305 were in released state, sliding box assembly 10 was done rectilinear motion with movable slider 301 along the direction of the axis of guide 202, thereby realizes the position adjustment of slide block 301.
Should be appreciated that syringe pump that the present embodiment provides and some parts in driving device thereof can be fixed together by screw, can be also to be fixed together by alternate manner, welding for example.
Therefore, in the syringe pump of the driving device in adopting the present embodiment, the cooperation of squeezing handle, driving shaft and clutch shaft can realize controlling the engagement of subdivision nut or separating, and is convenient to loading and the adjustment of syringe; Support set can play guiding to guide shaft, and make guide shaft more steady when motion, after leading screw and the engagement of subdivision nut, subdivision nut clad is fully lived leading screw, make the active force of leading screw driving slide block more even, add the orientation of the axis of guide, make the motion of syringe piston rod more steady, thereby guarantee the mechanical precision of syringe pump.
Above content is the further description of the application being done in conjunction with concrete embodiment, can not assert that the application's concrete enforcement is confined to these explanations.For the application person of an ordinary skill in the technical field, under the prerequisite that does not break away from the present application design, can also make some simple deduction or replace.
Claims (10)
1. the driving device of a syringe pump, is characterized in that, comprising:
Sliding box assembly (10), described sliding box assembly (10) comprise shell (101) and guide shaft (104), and described shell (101) connects the piston rod of syringe, and an end of described guide shaft (104) is fixed on shell (101);
Carriage assembly (20), described carriage assembly (20) comprise that an end is provided with the support of guide shaft hole (203) (201), and described guide shaft (104) passes described guide shaft hole (203);
Slide block assembly (30), described slide block assembly (30) comprises and with guide shaft (104) one ends of sliding box assembly (10), being connected for driving the slide block (301) of sliding box assembly (10) motion, be fixed on the subdivision nut (302) in the installing hole of affiliated slide block (301) and the leading screw (305) moved along a straight line be used to driving slide block (301), described subdivision nut (302) has first wing (3021) and second wing (3022), one end of one end of described first wing (3021) and second wing (3022) is hinged, described subdivision nut (302) and leading screw (305) engagement, described leading screw (305) rotates and is arranged on described support (201), described leading screw (305) is parallel to the guide shaft (104) of sliding box assembly (10).
2. device as claimed in claim 1 is characterized in that:
Described sliding box assembly (10) also comprises driving shaft (102) and the squeezing handle (103) rotated be used to driving driving shaft (102), described squeezing handle (103) is arranged in shell (101), and the rotating shaft (1031) of squeezing handle (103) is connected with an end of driving shaft (102);
Described slide block assembly (30) also comprises that described clutch shaft (304) is positioned at subdivision nut (302) and is connected with the driving shaft (102) of sliding box assembly (10) be used to the clutch shaft (304) of controlling subdivision nut (302) engagement or separating.
3. device as claimed in claim 2, it is characterized in that, described carriage assembly (20) also comprises support set (204), described support set (204) has the trepanning corresponding with guide shaft hole (203), and the guide shaft (104) of described sliding box assembly (10) passes described trepanning and guide shaft hole (203).
4. device as claimed in claim 3, it is characterized in that, described carriage assembly (20) also comprises the axis of guide (202), and an end of the described axis of guide (202) is fastened in the installing hole of support set (204), and the other end is fixed on an end of support (201); Described slide block (301) is slidably connected by gathering sill and the described axis of guide (202), and the described axis of guide (202) is parallel to leading screw (305).
5. device as claimed in claim 1, it is characterized in that, described slide block assembly (30) also comprises rotating shaft (303), one end of first wing (3021) of described subdivision nut (302) and an end of second wing (3022) are hinged by described rotating shaft (303), and described subdivision nut (302) is fixed in the installing hole of slide block (301) by described rotating shaft (303).
6. device as claimed in claim 1, it is characterized in that, one end of the leading screw (305) of described slide block assembly (30) is connected to by axle sleeve (306) end that support (201) has guide shaft hole (203), and the other end is connected to the other end of support (201) by flange bearing (307).
7. device as claimed in claim 1, it is characterized in that, described slide block assembly (30) also comprises connecting plate (308), it is upper that described connecting plate (308) is fixed on slide block (301) by screw (3081), and the pin (3082) on connecting plate (308) passes installing hole (3011) on slide block (301) and the through hole (1041) on guide shaft (104) is fixed on guide shaft (104) on slide block (301).
8. device as claimed in claim 1, it is characterized in that, described slide block assembly (30) also comprises pressing plate (309) and is used to subdivision nut (302) that the spring (310) of clamping force is provided, it is upper that described pressing plate (309) is fixed on slide block (301), and described spring (310) is fixed between pressing plate (309) and subdivision nut (302).
9. as the described device of claim 1-8 any one, it is characterized in that, the support (201) of described carriage assembly (20) adopts sheet metal component.
10. a syringe pump, is characterized in that, described syringe pump comprises as the described driving device of claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202651934U CN203303432U (en) | 2013-05-15 | 2013-05-15 | Injection pump and drive device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202651934U CN203303432U (en) | 2013-05-15 | 2013-05-15 | Injection pump and drive device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203303432U true CN203303432U (en) | 2013-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202651934U Expired - Lifetime CN203303432U (en) | 2013-05-15 | 2013-05-15 | Injection pump and drive device thereof |
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| Country | Link |
|---|---|
| CN (1) | CN203303432U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147657A (en) * | 2013-05-15 | 2014-11-19 | 深圳市深科医疗器械技术开发有限公司 | Injection pump and driving device thereof |
| CN105031765A (en) * | 2015-08-25 | 2015-11-11 | 苏州麦德迅医疗科技有限公司 | Injection pump |
| CN110465735A (en) * | 2019-07-19 | 2019-11-19 | 保定通用过滤器材有限公司 | A kind of helix tube filter core roll welding device |
-
2013
- 2013-05-15 CN CN2013202651934U patent/CN203303432U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147657A (en) * | 2013-05-15 | 2014-11-19 | 深圳市深科医疗器械技术开发有限公司 | Injection pump and driving device thereof |
| CN105031765A (en) * | 2015-08-25 | 2015-11-11 | 苏州麦德迅医疗科技有限公司 | Injection pump |
| CN110465735A (en) * | 2019-07-19 | 2019-11-19 | 保定通用过滤器材有限公司 | A kind of helix tube filter core roll welding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
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 SCIENTIFIC Co.,Ltd. Address before: 518023 building 7, building A, Teng Bang building, north of Qingshui River Road, Luohu District, Guangdong, Shenzhen Patentee before: SHENZHEN SHENKE MEDICAL INSTRUMENT TECHNICAL DEVELOPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
|
| CX01 | Expiry of patent term |