CN203736612U - Transmission device of medical syringe pump - Google Patents
Transmission device of medical syringe pump Download PDFInfo
- Publication number
- CN203736612U CN203736612U CN201320891939.2U CN201320891939U CN203736612U CN 203736612 U CN203736612 U CN 203736612U CN 201320891939 U CN201320891939 U CN 201320891939U CN 203736612 U CN203736612 U CN 203736612U
- Authority
- CN
- China
- Prior art keywords
- screw
- connecting rod
- nut
- installing hole
- leading screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Transmission Devices (AREA)
Abstract
The utility model belongs to the technical field of medical instruments, and particularly relates to a transmission device of a medical syringe pump. The transmission device comprises a push handle part, a connecting rod, a transmission bracket, a slider, a ball screw and a nut. The connecting rod is mounted in a connecting rod mounting hole of the transmission bracket, one end of the connecting rod is connected with the push handle part while the other end is mounted at the position of the connecting rod mounting hole, the nut is fixedly mounted on the slider, the ball screw penetrates screw mounting through holes of the nut and the slider, and two ends of the ball screw are overlapped with screw mounting holes at two side edges of the transmission bracket and form rolling fit with the screw mounting holes. By the transmission device, infusion precision and automation of the syringe pump are improved, maintenance of the syringe pump is reduced, service life of the syringe pump is prolonged, and convenience is brought to medical staff effectively.
Description
Technical field
This utility model belongs to technical field of medical instruments, is specifically related to a kind of actuating device of medical injection pump, the transmission that this actuating device is applicable to the straight-line transmission of syringe pump parts or rotatablely moves.
Background technology
At present, most of ward of hospital is all equipped with syringe pump, and the transmission adopted lead screw half-nut transmission of the syringe pump of most of producer, between leading screw and nut, it is sliding friction, for fear of the appearance between nut and leading screw, kill phenomenon, between nut and leading screw, be designed with sideshake.Between screw and leading screw, be sliding friction, coefficient of friction is large, easily generates heat and weares and teares, and affects transmission accuracy.When transmission is reverse, backlass is obvious, and along with the prolongation backlass of service time can be increasing, and worse and worse, some application risks that this has just increased in syringe pump use procedure, have a strong impact on service life of syringe pump to transmission accuracy.When using the transmission of lead screw half-nut, sometimes need half screw and lead screw clutch to open, need in position half screw and lead screw in conjunction with upper.Half screw and lead screw in conjunction with time, sometimes half screw teeth or teeth groove can not be completely and lead screw teeth groove or teeth in conjunction with upper, there is dislocation.While starting when transmission, half screw and lead screw have and will first eliminate dislocation, occur one section of invalid transmission, i.e. transmission of lead screw, but the not motion of half screw, just there is transmission deviation in this.Eliminating dislocation is also can to make a noise and vibrate, and to patient and medical worker, all can cause harmful effect.
The transmission of lead screw half-nut is sliding friction, and frictional resistance is large, at the bottom of transmission efficiency (common transmission efficiency 30%～60%), there will be creeping phenomenon when low speed or fine setting.Force transmission mechanism need to be selected large gear ratio mechanism or select the motor of large model, this all causes drive mechanism design larger, take up room large or power consumption is large, increase the manufacturing cost of product and the use cost of product, reduce the competitiveness on market of product.
Utility model content
The purpose of this utility model is to overcome the defect existing in prior art, designs a kind of actuating device of medical injection pump, and it is poor that this device can solve medical injection pump direct drive positioning precision, and has the problem of security risk.
To achieve these goals, the technical solution of the utility model is the actuating device of a kind of medical injection pump of design, comprises and pushes away shank part, connecting rod, transmission bracket, slide block, ball-screw, nut;
Wherein, have connecting rod installing hole and leading screw installing hole on a side of described transmission bracket, have leading screw installing hole in the respective side of described transmission bracket, described two leading screw installing holes coaxially arrange; On described slide block, have leading screw through hole and connecting rod installing hole are installed;
Its annexation is: described connecting rod is arranged in the connecting rod installing hole of described transmission bracket, one end of described connecting rod is connected with the described shank part that pushes away, the other end is arranged on the connecting rod installing hole place of described slide block, described nut is fixedly mounted on described slide block, described ball-screw is installed through hole through the leading screw of nut and slide block, and the two ends of described ball-screw are overlapped on the leading screw installing hole place of described transmission bracket dual-side and form to roll with leading screw installing hole and coordinate.
Also comprise two bearings, described two bearings are arranged on respectively in the leading screw installing hole of described transmission bracket dual-side, and the two ends of described ball-screw are fixed on the inner ring of described two bearings.
Described nut is fixedly mounted on described slide block by screw.
Advantage of the present utility model and beneficial effect are:
One, scheme of the present utility model, has improved the automaticity of syringe pump infusion precision and syringe pump, has reduced the maintenance of syringe pump, has extended the service life of infusion, has effectively facilitated medical personnel.
Two, scheme of the present utility model, realizes high position precision and the repetitive positioning accuracy of syringe pump, and the positioning precision of every 300mm can reach 5 μ m.
Three, owing to also comprising two bearings, described two bearings are arranged on respectively in the leading screw installing hole of described transmission bracket dual-side, and the two ends of described ball-screw are fixed on the inner ring of described two bearings; Can utilize the rolling characteristics that bearing is good to guarantee that ball-screw coordinates with the rolling of described transmission bracket dual-side.
Four, because described nut is fixedly mounted on described slide block by screw, can so that described nut be installed on dismounting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1-pushes away shank part; 2-connecting rod; 3-transmission bracket; 4-slide block; 5-bearing; 6-ball-screw; 7-nut; 8-screw.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is further described, following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, the concrete technical scheme of implementing of this utility model is: a kind of actuating device of medical injection pump, comprises and push away shank part 1, connecting rod 2, transmission bracket 3, slide block 4, ball-screw 6, nut 7;
Wherein, have connecting rod installing hole and leading screw installing hole on a side of described transmission bracket 3, have leading screw installing hole in the respective side of described transmission bracket 3, described two leading screw installing holes coaxially arrange; On described slide block 4, have leading screw through hole and connecting rod installing hole are installed;
Its annexation is: described connecting rod 2 is arranged in the connecting rod installing hole of described transmission bracket 3, one end of described connecting rod 2 is connected with the described shank part 1 that pushes away, the other end is arranged on the connecting rod installing hole place of described slide block 4, described nut 7 is fixedly mounted on described slide block 4, described ball-screw 6 is installed through hole through the leading screw of nut 7 and slide block 4, and the two ends of described ball-screw 6 are overlapped on the leading screw installing hole place of described transmission bracket 3 dual-sides and form to roll with leading screw installing hole and coordinate.
Also comprise two bearings 5, described two bearings 5 are arranged on respectively in the leading screw installing hole of described transmission bracket 3 dual-sides, and the two ends of described ball-screw 6 are fixed on the inner ring of described two bearings 5.
Described nut 7 is fixedly mounted on described slide block 4 by screw 8.
Between ball-screw 6 and nut 7, have steel ball rolling power transmission, ball-screw 6 and nut 7 belong to rolling friction, and frictional resistance is little, and noise is little, should not wear and tear, and long working life, should not break down.By nut 7 precompressed rolling steel balls, can eliminate backhaul gap, repetitive positioning accuracy is high.The design that can also optimize drive system by the little ball-screw 6 of employing frictional resistance and nut 7, can improve the rotating speed of ball-screw 6, needn't worry that ball-screw 6 and nut 7 occur killing and wear phenomenon, ball-screw 6 stroke back and forth all can be realized automatization, improves syringe pump automaticity.
The above is only preferential embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of this utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. an actuating device for medical injection pump, is characterized in that: comprise and push away shank part (1), connecting rod (2), transmission bracket (3), slide block (4), ball-screw (6), nut (7);
Wherein, have connecting rod installing hole and leading screw installing hole on a side of described transmission bracket (3), have leading screw installing hole in the respective side of described transmission bracket (3), described two leading screw installing holes coaxially arrange; On described slide block (4), have leading screw through hole and connecting rod installing hole are installed;
Its annexation is: described connecting rod (2) is arranged in the connecting rod installing hole of described transmission bracket (3), one end of described connecting rod (2) with described in push away shank part (1) and be connected, the other end is arranged on the connecting rod installing hole place of described slide block (4), described nut (7) is fixedly mounted on described slide block (4), described ball-screw (6) is installed through hole through the leading screw of nut (7) and slide block (4), the two ends of described ball-screw (6) are overlapped on the leading screw installing hole place of described transmission bracket (3) dual-side and form to roll with described leading screw installing hole and coordinate.
2. the actuating device of a kind of medical injection pump according to claim 1, it is characterized in that: also comprise two bearings (5), described two bearings (5) are arranged on respectively in the leading screw installing hole of described transmission bracket (3) dual-side, and the two ends of described ball-screw (6) are fixed on the inner ring of described two bearings (5).
3. the actuating device of a kind of medical injection pump according to claim 1 and 2, is characterized in that: described nut (7) is fixedly mounted on described slide block (4) by screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891939.2U CN203736612U (en) | 2013-12-31 | 2013-12-31 | Transmission device of medical syringe pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891939.2U CN203736612U (en) | 2013-12-31 | 2013-12-31 | Transmission device of medical syringe pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203736612U true CN203736612U (en) | 2014-07-30 |
Family
ID=51336482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320891939.2U Expired - Fee Related CN203736612U (en) | 2013-12-31 | 2013-12-31 | Transmission device of medical syringe pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203736612U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104587565A (en) * | 2015-01-26 | 2015-05-06 | 谭永宏 | Screw rod driving device for injection pump |
| CN105066860A (en) * | 2015-08-04 | 2015-11-18 | 深圳康罗技术有限公司 | Mechanism and method for detecting sliding block position of medical injection pump |
-
2013
- 2013-12-31 CN CN201320891939.2U patent/CN203736612U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104587565A (en) * | 2015-01-26 | 2015-05-06 | 谭永宏 | Screw rod driving device for injection pump |
| CN104587565B (en) * | 2015-01-26 | 2018-07-17 | 谭永宏 | A kind of screw rod driving device for syringe pump |
| CN105066860A (en) * | 2015-08-04 | 2015-11-18 | 深圳康罗技术有限公司 | Mechanism and method for detecting sliding block position of medical injection pump |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20191231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |