CN103691029B - A kind of syringe pump that can show dose in syringe in real time - Google Patents
A kind of syringe pump that can show dose in syringe in real time Download PDFInfo
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- CN103691029B CN103691029B CN201310752824.XA CN201310752824A CN103691029B CN 103691029 B CN103691029 B CN 103691029B CN 201310752824 A CN201310752824 A CN 201310752824A CN 103691029 B CN103691029 B CN 103691029B
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Abstract
The invention belongs to technical field of medical instruments, be specifically related to a kind of syringe pump that can show dose in syringe in real time.Slide-wire rheostat is adopted to be connected on screw.When screw pushing syringe piston runs, rheostat produces the change of resistance, carrys out monitored over time injection speed with this.When the pump housing runs, screw leading linear displacement transducer slides, and screw slide block does rectilinear motion, then can pass through the change in resistance size of slide wire resistance formula Linear displacement transducer and the frequency of change, detects the ruuning situation of screw slide block in real time.Can the omnidistance ruuning situation detecting screw slide block, namely omnidistance monitoring is done to the work of the pump housing.
Description
Technical field
The invention belongs to technical field of medical instruments, be specifically related to a kind of syringe pump that can show dose in syringe in real time.
Background technology
In existing syringe pump, usually adopt motor to say that convert rotational motion is for rectilinear motion by gear train, screw mandrel and nut with certain speed reducing ratio, nut drives a kind of push rod pushing syringe piston to move ahead to carry out injecting liquid drug.
But in Clinical practice, there is the defect of always.Nurse cannot know the accurate remaining time of surplus in syringe tube and this transfusion.To relieve nurse like this, change dressings etc. in operating process and all cause certain puzzlement.
Mainly take present pipe inner liquid medicine surplus and remaining time to obtain with under type.
Remaining liq in manual observation syringe, then calculates remaining time according to the speed arranged.There is following two problems: one, there is larger error in reading; Two, light-tight injector cannot see the residue medicinal liquid in pipe;
Summary of the invention
The object of the invention is to overcome the defect existed in prior art, design a kind of syringe pump that can show residual drug in real time, this syringe pump can measure the residual drug of syringe in real time, and its structure is simple and reliable.
To achieve these goals, technical scheme of the present invention is a kind of syringe pump that can show residual drug in real time of design, comprises push rod, tooth bar, housing, leading screw, screw, drive block, display module;
Wherein, described push rod is primarily of head and shaft composition;
Be provided with support bar on the housing; Leading screw installing hole is respectively equipped with in the relative both sides of described housing;
Described drive block is primarily of support, the first gear, radial magnet, magnetoresistive transducer, middle control module, the second gear, the 3rd gear composition; The screwed hole matched with described leading screw is had at described pedestal lower end; Described first gear, the second gear and the 3rd gear are arranged in described support, and described second gear and the 3rd gear are coaxially arranged, described second gear and described first gears meshing, and described radial magnet is arranged on described first gear; Described magnetoresistive transducer and middle control module are installed on the bracket;
Its annexation is: parallel with described support bar on the inwall that described tooth bar is arranged on described housing, described drive block is actively socketed on described support bar by support, and described 3rd gear engages with described tooth bar; The two ends of described shaft are separately fixed on the support of described head and drive block, the support that described screw is arranged on described drive block make the screwed hole of the screwed hole of described screw and described support coaxially arrange, described leading screw is parallel with described support bar, described leading screw passes 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 to be arranged on housing and with middle control model calling.
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, namely coordinate by radial magnet and magnetoresistive transducer the angle obtaining pinion rotation, and the length of rack and pinion engagement is calculated by middle control module, thus obtaining the distance that syringe pushes away handle movement, whole device stability is high, safe and reliable to operation and the life-span is long; Radial magnet measures the direction in magnetic field, so not by the impact of magnetic field decline, and not by 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; Based on the engaged transmission of rack-and-pinion, thus drive the rotation of angular displacement sensor, in the whole stroke of tooth bar, magnetoresistive transducer can the situation such as displacement in time of running of complete detection syringe and unit interval, can accomplish omnidistance measurement and there is not 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.
Detailed description of the invention
Be further described the specific embodiment of the present invention below in conjunction with drawings and Examples, following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
As shown in Figures 1 to 4, the technical scheme that the present invention specifically implements is: a kind of syringe pump that can show residual drug in real time, 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 primarily of head and shaft composition;
Described housing 3 is provided with support bar; Leading screw installing hole is respectively equipped with in the relative both sides of described housing 3;
Described drive block 6 forms primarily of support, the first gear 6-1, radial magnet 6-2, magnetoresistive transducer 6-3, middle control module 6-4, the second gear 6-5, the 3rd gear 6-6; The screwed hole matched with described leading screw 4 is had at described pedestal lower end; Described first gear 6-1, the second gear 6-5 and the 3rd gear 6-6 are arranged in described support, described second gear 6-5 and the 3rd gear 6-6 is coaxially arranged, described second gear engages with described first gear 6-1, and described radial magnet 6-2 is arranged on described first gear 6-1; Described magnetoresistive transducer 6-3 and middle control module 6-4 installs on the bracket;
Its annexation is: parallel with described support bar on the inwall that described tooth bar 2 is arranged on described housing 3, described drive block 6 is actively socketed on described support bar by support, and described 3rd gear 6-6 engages with described tooth bar 2; The two ends of described shaft are separately fixed on the support of described head and drive block 6, the support that described screw 5 is arranged on described drive block 6 make the screwed hole of described screw 5 and the screwed hole of described support coaxially arrange, described leading screw is parallel with described support bar, described leading screw 4 passes the screwed hole of described screw 5 and support, and the two ends of described leading screw 4 are arranged on by bearing in the leading screw installing hole of described housing 3; Described display module 7 to be arranged on housing 3 and to be connected with middle control module 6-4.
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 to operate, rotary motion is converted to rectilinear motion by drive block 6, and the 3rd gear 6-6 on drive block 6 is meshed with tooth bar 2, and gear often rotates an angle, 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.By the design adopting the little leading screw 4 of frictional resistance and screw 5 can also optimize drive system, the rotating speed of leading screw 4 can be improved, need not worry that killing and wear phenomenon appears in leading screw 4 and screw 5, leading screw 4 stroke back and forth all can realize 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, thus drive the screw 5 on it to move horizontally, screw 5 drives drive block 6 to move, thus drive the shaft of push rod 1 to move horizontally, namely the head of push rod 1 acts on syringe and pushes away handle and make its injecting fluid, because on drive block 6, the 3rd gear 6-6 engages with the tooth bar 2 in syringe pump housing, radial magnet 6-2 carries out circular-rotation together with the first gear 6-1, magnetoresistive transducer 6-3 detects the angle that angle i.e. the first gear 6-1 that radial magnet 6-2 rotates rotates, and rotational angle is exported to middle control module 3, middle control module 3 can calculate the length of tooth bar 2 and gears meshing according to rotational angle, thus obtain the distance of drive block 6 movement, the distance that syringe pushes away handle movement can be obtained, during sky defeated due to syringe, syringe pushes away the position of handle is fixing, so remaining liquid measure in syringe can be calculated thus, remaining liquid measure is transferred to the display module 7 of syringe pump by middle control module 3, both display 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, under the prerequisite not departing from 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 a syringe pump for residual drug in real time, 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 primarily of head and shaft composition;
Described housing (3) is provided with support bar; Leading screw installing hole is respectively equipped with in the relative both sides of described housing (3);
Described drive block (6) is primarily of support, the first gear (6-1), radial magnet (6-2), magnetoresistive transducer (6-3), middle control module (6-4), the second gear (6-5), the 3rd gear (6-6) composition; The screwed hole matched with described leading screw (4) is had at described pedestal lower end; Described first gear (6-1), the second gear (6-5) and the 3rd gear (6-6) are arranged in described support, described second gear (6-5) and the 3rd gear (6-6) are coaxially arranged, described second gear engages with described first gear (6-1), and described radial magnet (6-2) is arranged on described first gear (6-1); Described magnetoresistive transducer (6-3) and middle control module (6-4) are installed on the bracket;
Annexation between described tooth bar (2), housing (3), leading screw (4), screw (5), drive block (6), middle control module (6-4), the 3rd gear (6-6) and display module (7) is: parallel with described support bar on the inwall that described tooth bar (2) is arranged on described housing (3), described drive block (6) is actively socketed on described support bar by support, and described 3rd gear (6-6) engages with described tooth bar (2); The two ends of described shaft are separately fixed on the support of described head and drive block (6), the support that described screw (5) is arranged on described drive block (6) make the screwed hole of described screw (5) and the screwed hole of described support coaxially arrange, described leading screw is parallel with described support bar, the screwed hole of described leading screw (4) through described screw (5) and the screwed hole of support, the two ends of described leading screw (4) are arranged on by bearing in the leading screw installing hole of described housing (3); Described display module (7) is arranged on housing (3) and goes up and be connected with middle control module (6-4).
2. a kind of syringe pump that can show residual drug in real time 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 CN103691029A (en) | 2014-04-02 |
| CN103691029B true 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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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (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 |
| US7018361B2 (en) * | 2002-06-14 | 2006-03-28 | Baxter International Inc. | Infusion pump |
| CN101785889B (en) * | 2009-01-22 | 2013-10-16 | 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 |
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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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