CN103691029A - Injection pump capable of displaying medicine amount in injector in real time - Google Patents
Injection pump capable of displaying medicine amount in injector in real time Download PDFInfo
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- CN103691029A CN103691029A CN201310752824.XA CN201310752824A CN103691029A CN 103691029 A CN103691029 A CN 103691029A CN 201310752824 A CN201310752824 A CN 201310752824A CN 103691029 A CN103691029 A CN 103691029A
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Abstract
The invention belongs to the technical field of medical instruments, and particularly relates to an injection pump capable of displaying medicine amount in an injector in real time. A rheochord is connected onto a nut. When the nut pushes an injector piston to operate, resistance generated by the rheochord is changed, so that the injection speed is monitored in the whole process. When a pump body operates, the nut drives a linear displacement transducer to slide, a nut slider moves linearly, and accordingly operation conditions of the nut slider can be detected in real time according to size of resistance changes and frequency of the changes of the sliding resistance type linear displacement transducer. The operation conditions of the nut slider can be detected in the whole process, and accordingly operation of the pump body is monitored in the whole process.
Description
Technical field
The invention belongs to technical field of medical instruments, be specifically related to a kind of syringe pump that can show in real time dose in syringe.
Background technology
In existing syringe pump, conventionally adopt motor to say to rotatablely move with certain speed reducing ratio by gear train, screw mandrel and nut and be converted into rectilinear motion, nut drives a kind of push rod pushing syringe piston to move ahead to carry out injecting liquid drug.
But in clinical use, there is the defect of always.Nurse cannot know surplus in syringe tube and the accurate remaining time of this transfusion.In operating process such as relieving, change dressings nurse like this, all cause certain puzzlement.
Manage now inner liquid medicine surplus and mainly take remaining time following mode to obtain.
Remaining liq in manual observation syringe, then calculates remaining time according to the speed arranging.There are following two problems: one, have larger error in reading; Two, light-tight injector be cannot see the residue medicinal liquid in pipe;
Summary of the invention
The object of the invention is to overcome the defect existing in prior art, design a kind of syringe pump that can show in real time residual drug, this syringe pump can be measured the residual drug of syringe in real time, and it is simple in structure and reliable.
To achieve these goals, technical scheme of the present invention is a kind of syringe pump that can show in real time residual drug of design, comprises push rod, tooth bar, housing, leading screw, screw, drive block, display module;
Wherein, described push rod is mainly comprised of head and shaft;
On described housing, be provided with support bar; Relative both sides at described housing are respectively equipped with leading screw installing hole;
Described drive block mainly by support, the first gear, radial magnet, magnetoresistive transducer, in control module, the second gear, the 3rd gear form; In described support lower end, have the screwed hole matching with described leading screw; Described the first gear, the second gear and the 3rd gear are arranged in described support, and described the second gear and the 3rd gear coaxially arrange, described the second gear and described the first gear engagement, and described radial magnet is arranged on described the first gear; Described magnetoresistive transducer and middle control module are arranged on described support;
Its annexation is: described tooth bar is arranged on the inwall of described housing and is parallel with described support bar, and described drive block is actively socketed on described support bar by support, described the 3rd gear and the engagement of described tooth bar; The two ends of described shaft are separately fixed on the support of described head and drive block, described screw is arranged on the support of described drive block and the screwed hole of described screw and the screwed hole of described support is coaxially arranged, described leading screw is parallel with described support bar, described leading screw is through the screwed hole of described screw and support, and the two ends of described leading screw are arranged in the leading screw installing hole of described housing by bearing; Described display module is arranged on housing and with middle control module and is connected.
Described screw is fixedly mounted on described drive block by screw.
Advantage of the present invention and beneficial effect are:
One, the invention belongs to non-contact measurement, by radial magnet and magnetoresistive transducer, coordinate and obtain the angle that gear rotates, and calculate by middle control module the length that rack and pinion meshes, thereby obtain syringe and push away the distance that handle moves, whole device stability is high, safe and reliable to operation and the life-span is long; Radial magnet is measured the direction in magnetic field, thus be not subject to the impact of magnetic field decline, and be not subject to the impact of environment and dust etc.; In addition rack-and-pinion belongs to machine driving engagement, more safe and reliable, and both transmissions are simple and convenient, efficient, and cost is lower; Engaged transmission based on rack-and-pinion, thereby drive the rotation of angular displacement sensor, in the whole stroke of tooth bar, magnetoresistive transducer can complete detection syringe time of operation and the situations such as displacement in the unit interval, can accomplish omnidistance measurement and not have the problems such as breakpoint.
Two, because described screw is fixedly mounted on described drive block by screw; Can so that described screw be installed on dismounting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is drive block radial magnet of the present invention, gear structure schematic diagram;
Fig. 3 is magnetoresistive transducer on drive block of the present invention, middle control modular structure schematic diagram;
Fig. 4 is magnetoresistive transducer operation principle schematic diagram of the present invention.
Wherein, 1 is push rod; 2 is tooth bar; 3 is housing; 4 is leading screw; 5 is screw; 6 is drive block; 6-1 is the first gear; 6-2 is radial magnet; 6-3 is magnetoresistive transducer; 6-4 is middle control module; 6-5 is the second gear; 6-6 is the 3rd gear; 7 is display module.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described, following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
As shown in Figures 1 to 4, the concrete technical scheme of implementing of the present invention is: a kind of syringe pump that can show in real time residual drug, comprises push rod 1, tooth bar 2, housing 3, leading screw 4, screw 5, drive block 6, display module 7;
Wherein, described push rod 1 is mainly comprised of head and shaft;
On described housing 3, be provided with support bar; Relative both sides at described housing 3 are respectively equipped with leading screw installing hole;
Described drive block 6 mainly by support, the first gear 6-1, radial magnet 6-2, magnetoresistive transducer 6-3, in control module 6-4, the second gear 6-5, the 3rd gear 6-6 form; In described support lower end, have the screwed hole matching with described leading screw 4; Described the first gear 6-1, the second gear 6-5 and the 3rd gear 6-6 are arranged in described support, described the second gear 6-5 and the 3rd gear 6-6 coaxially arrange, described the second gear and described the first gear 6-1 engagement, described radial magnet 6-2 is arranged on described the first gear 6-1; Described magnetoresistive transducer 6-3 and middle control module 6-4 are arranged on described support;
Its annexation is: described tooth bar 2 is arranged on the inwall of described housing 3 and is parallel with described support bar, and described drive block 6 is actively socketed on described support bar by support, described the 3rd gear 6-6 and 2 engagements of described tooth bar; The two ends of described shaft are separately fixed on the support of described head and drive block 6, described screw 5 is arranged on the support of described drive block 6 and the screwed hole of described screw 5 and the screwed hole of described support is coaxially arranged, described leading screw is parallel with described support bar, described leading screw 4 is through the screwed hole of described screw 5 and support, and the two ends of described leading screw 4 are arranged in the leading screw installing hole of described housing 3 by bearing; Described display module 7 is arranged on housing 3 and with middle control module 6-4 and is connected.
Described screw 5 is fixedly mounted on described drive block 6 by screw.
As shown in Figure 4, the operation principle of described magnetoresistive transducer 6-3 is, described radial magnet 6-2 is socketed in the first gear 6-1, and its magnetic line of force is divided into 360 °; When motor drives screw mandrel 4 running, drive block 6 will rotatablely move and be converted to rectilinear motion, and the 3rd gear 6-6 on drive block 6 is meshed with tooth bar 2, angle of the every rotation of gear, and magnetoresistive transducer 6-3 can obtain a magnetic line of force variable angle value;
The operation principle of described leading screw 4 and screw 5: have steel ball rolling power transmission between leading screw 4 and screw 5, leading screw 4 and screw 5 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 screw 5 precompressed rolling steel balls, can eliminate backhaul gap, repetitive positioning accuracy is high.The design that can also optimize drive system by the little leading screw 4 of employing frictional resistance and screw 5, can improve the rotating speed of leading screw 4, needn't worry that leading screw 4 and screw 5 occur killing and wear phenomenon, leading screw 4 stroke back and forth all can be realized automatization, improves syringe pump automaticity.
Operation principle:
The shaft of syringe and push rod 1 is installed in parallel on cutting somebody's hair of push rod 1, motor drives leading screw 4 to rotate, thereby drive the screw 5 on it to move horizontally, screw 5 drives drive block 6 motions, thereby drive the shaft of push rod 1 to move horizontally, be that the head of push rod 1 acts on syringe and pushes away handle and make its injecting fluid, due to tooth bar 2 engagements in the 3rd gear 6-6 and syringe pump housing on drive block 6, radial magnet 6-2 carries out circular-rotation together with the first gear 6-1, magnetoresistive transducer 6-3 detects the angle angle that the first gear 6-1 rotates that radial magnet 6-2 rotates, and rotational angle is exported to middle control module 3, middle control module 3 can calculate the length of tooth bar 2 and gear engagement according to rotational angle, thereby obtain the distance that drive block 6 moves, can obtain syringe and push away the distance that handle moves, because the defeated position that syringe pushes away handle when empty of syringe is fixed, so can calculate thus remaining liquid measure in syringe, middle control module 3 is transferred to remaining liquid measure the display module 7 of syringe pump, both demonstration Residual liquid that can be real-time and residue transfusion time.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. can show in real time a syringe pump for residual drug, it is characterized in that: comprise push rod (1), tooth bar (2), housing (3), leading screw (4), screw (5), drive block (6), display module (7);
Wherein, described push rod (1) is mainly comprised of head and shaft;
On described housing (3), be provided with support bar; Relative both sides at described housing (3) are respectively equipped with leading screw installing hole;
Described drive block (6) mainly by support, the first gear (6-1), radial magnet (6-2), magnetoresistive transducer (6-3), in control module (6-4), the second gear (6-5), the 3rd gear (6-6) form; In described support lower end, have the screwed hole matching with described leading screw (4); Described the first gear (6-1), the second gear (6-5) and the 3rd gear (6-6) are arranged in described support, described the second gear (6-5) and the 3rd gear (6-6) coaxially arrange, described the second gear and described the first gear (6-1) engagement, described radial magnet (6-2) is arranged on described the first gear (6-1); Described magnetoresistive transducer (6-3) and middle control module (6-4) are arranged on described support;
Its annexation is: described tooth bar (2) is arranged on the inwall of described housing (3) and is parallel with described support bar, described drive block (6) is actively socketed on described support bar by support, described the 3rd gear (6-6) and described tooth bar (2) engagement; The two ends of described shaft are separately fixed on the support of described head and drive block (6), described screw (5) is arranged on the support of described drive block (6) and the screwed hole of described screw (5) and the screwed hole of described support is coaxially arranged, described leading screw is parallel with described support bar, described leading screw (4) is through the screwed hole of described screw (5) and support, and the two ends of described leading screw (4) are arranged in the leading screw installing hole of described housing (3) by bearing; Described display module (7) is arranged on housing (3) above and is connected with middle control module (6-4).
2. a kind of syringe pump that can show in real time residual drug according to claim 1, is characterized in that: described screw (5) is fixedly mounted on described drive block (6) by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752824.XA CN103691029B (en) | 2013-12-31 | 2013-12-31 | A kind of syringe pump that can show dose in syringe in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752824.XA CN103691029B (en) | 2013-12-31 | 2013-12-31 | A kind of syringe pump that can show dose in syringe in real time |
Publications (2)
| Publication Number | Publication Date |
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| CN103691029A true CN103691029A (en) | 2014-04-02 |
| CN103691029B CN103691029B (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310752824.XA Active CN103691029B (en) | 2013-12-31 | 2013-12-31 | A kind of syringe pump that can show dose in syringe in real time |
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| CN (1) | CN103691029B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014008A (en) * | 2014-05-14 | 2014-09-03 | 杨力 | Gear pump type inner power infusion set |
| CN107349493A (en) * | 2017-07-04 | 2017-11-17 | 聊城市斐然实凯科技有限公司 | A kind of syringe pump |
| CN107349494A (en) * | 2017-07-04 | 2017-11-17 | 聊城市斐然实凯科技有限公司 | The injection drive device and syringe pump of a kind of syringe pump |
| CN109621081A (en) * | 2019-01-30 | 2019-04-16 | 深圳中科生物医疗电子有限公司 | A kind of infusion pump being provided with friction speed clutch |
| CN110732058A (en) * | 2019-09-26 | 2020-01-31 | 吴增阳 | Infusion device convenient for patient to move |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5254096A (en) * | 1992-09-23 | 1993-10-19 | Becton, Dickinson And Company | Syringe pump with graphical display or error conditions |
| US20030233069A1 (en) * | 2002-06-14 | 2003-12-18 | John Gillespie | Infusion pump |
| CN101785889A (en) * | 2009-01-22 | 2010-07-28 | 深圳市深科医疗器械技术开发有限公司 | Infusion pump with occlusion alarm device |
| CN203075363U (en) * | 2012-12-28 | 2013-07-24 | 刘仲馨 | Injection pump operation monitoring device based on angular displacement sensor |
-
2013
- 2013-12-31 CN CN201310752824.XA patent/CN103691029B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5254096A (en) * | 1992-09-23 | 1993-10-19 | Becton, Dickinson And Company | Syringe pump with graphical display or error conditions |
| US20030233069A1 (en) * | 2002-06-14 | 2003-12-18 | John Gillespie | Infusion pump |
| CN101785889A (en) * | 2009-01-22 | 2010-07-28 | 深圳市深科医疗器械技术开发有限公司 | Infusion pump with occlusion alarm device |
| CN203075363U (en) * | 2012-12-28 | 2013-07-24 | 刘仲馨 | Injection pump operation monitoring device based on angular displacement sensor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014008A (en) * | 2014-05-14 | 2014-09-03 | 杨力 | Gear pump type inner power infusion set |
| CN104014008B (en) * | 2014-05-14 | 2016-09-07 | 杨力 | Gear pump type internally-powered transfusion device |
| CN107349493A (en) * | 2017-07-04 | 2017-11-17 | 聊城市斐然实凯科技有限公司 | A kind of syringe pump |
| CN107349494A (en) * | 2017-07-04 | 2017-11-17 | 聊城市斐然实凯科技有限公司 | The injection drive device and syringe pump of a kind of syringe pump |
| CN109621081A (en) * | 2019-01-30 | 2019-04-16 | 深圳中科生物医疗电子有限公司 | A kind of infusion pump being provided with friction speed clutch |
| CN109621081B (en) * | 2019-01-30 | 2023-12-08 | 深圳中科生物医疗电子有限公司 | Infusion pump with different-speed clutch mechanism |
| CN110732058A (en) * | 2019-09-26 | 2020-01-31 | 吴增阳 | Infusion device convenient for patient to move |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103691029B (en) | 2015-07-29 |
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Effective date of registration: 20210531 Address after: 1-113, building 1, phase I plant, No.10 Zhujiang East Road, No.3 Industrial Park, Xuzhou hi tech Industrial Development Zone, Jiangsu Province, 221000 Patentee after: Jiangsu Chuangjia Medical Technology Co.,Ltd. Address before: 2511, block a, Shangdu international, 8 Dongdaqiao Road, Chaoyang District, Beijing 100020 Patentee before: BEIJING ZHONGJIN SILICON VALLEY TECHNOLOGY Co.,Ltd. |
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