CN105582591A - Injection pump and push plate detection device thereof - Google Patents
Injection pump and push plate detection device thereof Download PDFInfo
- Publication number
- CN105582591A CN105582591A CN201410619783.1A CN201410619783A CN105582591A CN 105582591 A CN105582591 A CN 105582591A CN 201410619783 A CN201410619783 A CN 201410619783A CN 105582591 A CN105582591 A CN 105582591A
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- pressure sensor
- push jack
- syringe
- checkout gear
- microswitch
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Abstract
The invention discloses an injection pump and an injector push plate detection device of the injection pump. The injector push plate detection device comprises a pressure sensor, a force measurement contact of the pressure sensor, a limiting fixing clamp for a plush plate arranged on a push head, and an elastic part, wherein the pressure sensor is arranged on the push head of the injection pump, the force measurement contact pushes against a push plate arranged on the end part of an injector push rod, the elastic part is arranged between the pressure sensor and the force measurement contact, a microswitch is arranged between the pressure sensor and a power circuit thereof, and a normally open contact of the microswitch is switched on when an injector push plate is mounted to a preset position. Therefore, only after an injector is mounted, due to the pressing of the injector push plate, the microswitch is triggered, then power is supplied to the pressure sensor, and then pressure detection is carried out. Therefore, the measured pressure value is not influenced by the temperature fluctuation, and thus the occurrence rate of false alarm is obviously reduced.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly relate to a kind of syringe push jack checkout gear for syringe pump. The invention still further relates to a kind of syringe pump that comprises said syringe push jack checkout gear.
Background technology
When clinical medicine used must be injected by intravenous route, and dosage must be very accurately, very little, the injection speed of total amount needs slowly or long-time constant in the situation that, how realizes above-mentioned purpose with syringe pump; The parts pushing syringe push rod of cutting somebody's hair by syringe pump is injected transfusion, thereby by the liquid input human body in syringe, and by setting the rotary speed of syringe pump screw rod, accurately adjust the fltting speed of syringe, thereby realize the accurate adjustment of drug dose.
The push rod end of said syringe is provided with disk, be called syringe push jack, in injection process, whether the installation site of syringe push jack is correct, and in injection process the operation of push rod whether meet the requirements be all the important control parameter of syringe pump, at present, how to realize the detection of syringe push jack installation site and push rod ruuning situation by being arranged on the syringe push jack checkout gear of injector push-rod end.
Syringe push jack checkout gear of the prior art comprise pressure sensor, pressure sensor dynamometry contact, be arranged on the spacing geometrical clamp of the push jack on cutting somebody's hair, and elastomeric element, wherein, pressure sensor is arranged on cutting somebody's hair of syringe pump, dynamometry contact is resisted against on syringe push jack, and elastomeric element is arranged between pressure sensor and dynamometry contact. in the time that syringe push jack is installed, syringe push jack promotes dynamometry contact to the direction motion near pressure sensor, and promote elastomeric element and move to the direction of pressure sensor, in the time that elastomeric element touches pressure sensor, can be to pressure sensor output slight pressure, pressure sensor by this tiny signal through amplifying circuit amplify after, transfer on microprocessor, thereby whether the syringe push jack that judges injector push-rod end is installed correctly: simultaneously, in the time that system is moved, the pressure transmitting to pressure sensor by elastomeric element, the pressure of syringe push jack can be detected, whether thereby can judge pipeline stops up.
But, in said syringe push jack checkout gear, pressure sensor is directly connected with power supply, it is all the time in power supply opening, initial value is easily subject to the impact of temperature drift and humidity drift, when detected pressures value hour, drift value is very large on the impact of testing result, have a strong impact on accuracy of detection, and the situation of false alarm easily occurs.
Therefore, provide a kind of syringe push jack checkout gear, make its impact of avoiding being subject to temperature drift and humidity drift, thereby improve accuracy of detection, avoid occurring false alarm, need the problem of solution with regard to becoming those skilled in the art badly.
Summary of the invention
The object of this invention is to provide a kind of syringe push jack checkout gear for syringe pump, it is provided with microswitch between pressure sensor and power circuit, only have in the time that syringe push jack is mounted to precalculated position, could touch microswitch closure, now starting pressure sensor, thereby avoid the impact on pressure sensor initial value of temperature drift and humidity drift, improved accuracy of detection, avoided occurring false alarm. Another object of the present invention is to provide a kind of syringe pump that comprises said syringe push jack checkout gear.
For solving the problems of the technologies described above, the invention provides a kind of syringe push jack checkout gear for syringe pump, comprise the pressure sensor being arranged on the cutting somebody's hair of described syringe pump, dynamometry contact with described pressure sensor, on described cutting somebody's hair, be provided with the spacing geometrical clamp of described push jack, between described pressure sensor and described dynamometry contact, be also provided with elastomeric element; Between described pressure sensor and its power circuit, be provided with microswitch, the normally opened contact of described microswitch is closure in the time that syringe push jack is mounted to precalculated position.
Preferably, the normally opened contact of described microswitch is arranged at the side of described dynamometry contact away from described syringe push jack.
Preferably, described microswitch is installed on the cathode power supply circuit of described pressure sensor.
Preferably, between described elastomeric element and described pressure sensor, there is the first preset space length that is greater than 0mm.
Preferably, between described elastomeric element and described dynamometry contact, there is the second preset space length that is greater than 0mm.
Preferably, described elastomeric element comprises thimble and the spring that is sheathed on described thimble, and one end of described thimble is resisted against described dynamometry contact, and its other end and described pressure sensing appliance have described the first preset space length.
Preferably, described pressure sensor, described dynamometry contact, described thimble and described spring arrange with one heart in power transmission direction.
Preferably, described dynamometry contact is arranged at cutting somebody's hair on guard shield of described syringe pump, and described in cut somebody's hair on guard shield and be provided with round boss, described dynamometry contact is connected in described round boss.
The present invention also provides a kind of syringe pump, comprise cut somebody's hair and be arranged at described in cut somebody's hair and syringe push jack between syringe push jack checkout gear, described syringe push jack checkout gear is syringe push jack checkout gear as above.
Syringe push jack checkout gear provided by the present invention is for syringe pump, this syringe push jack checkout gear comprises pressure sensor, the dynamometry contact of pressure sensor, be arranged on the spacing geometrical clamp of the push jack on cutting somebody's hair, and elastomeric element, wherein, pressure sensor is arranged on cutting somebody's hair of syringe pump, dynamometry contact is resisted against on the push jack of injector push-rod end, elastomeric element is arranged between pressure sensor and dynamometry contact, between described pressure sensor and its power circuit, be provided with microswitch, the normally opened contact of described microswitch is closure in the time that syringe push jack is mounted to precalculated position.
In the time that injector push-rod end push jack is installed, injector push-rod end push jack promotes dynamometry contact to the direction motion near pressure sensor, and promote elastomeric element and move to the direction of pressure sensor, in the process not contacting with pressure sensor at elastomeric element, elastomeric element is all the time in non-compressed state, in the time that elastomeric element touches pressure sensor, can be to pressure sensor output slight pressure, pressure sensor by this tiny signal through amplifying circuit amplify after, transfer on microprocessor, thereby whether the push jack that judges injector push-rod end is installed correctly, meanwhile, in the time that system is moved, whether the pressure transmitting to pressure sensor by elastomeric element, can detect the pressure of injector push-rod end push jack, stop up thereby can judge pipeline.
More importantly, due to the microswitch arranging between pressure sensor and power circuit, and the normally opened contact of microswitch is just closed in the time that syringe push jack is mounted to precalculated position, realize the interlock of syringe push jack and microswitch, in the time there is no mounting of syringe, pressure sensor and microswitch are in disengaged position, and now pressure sensor is not powered, and do not carry out pressure detecting. Only have when having installed after syringe, due to the compressing of syringe push jack, microswitch is triggered, just can power to pressure sensor, and start to carry out pressure detecting. The impact that the force value that can ensure like this to record is not waftd by temperature, thus the incidence of false alarm significantly reduced.
One preferred embodiment in, syringe push jack checkout gear provided by the present invention, has the first preset space length that is greater than 0mm between its elastomeric element and pressure sensor. ] like this, owing to there is the first suitable preset space length between elastomeric element and pressure sensor, the initial pressure that elastomeric element passes to pressure sensor is zero, thereby improve the accuracy that injector push-rod end push jack detects; Therefore, this injector push-rod end push jack checkout gear has not only been avoided the malpractice causing due to injector push-rod end push jack installation site mistake and pipeline blockage, and has further improved the accuracy of injector push-rod end push jack pressure detecting.
In another preferred embodiment, syringe push jack checkout gear provided by the present invention, the normally opened contact of microswitch is arranged at the side of described dynamometry contact away from described syringe push jack; In the time that push jack is mounted to precalculated position, dynamometry contact moves to the direction of microswitch, and triggers this microswitch, thereby realizes the interlock of microswitch and syringe push jack, and structure is comparatively simple, and linkage process is comparatively reliable.
Brief description of the drawings
A kind of detailed description of the invention of syringe push jack checkout gear that Fig. 1 provides for invention is in not structural representation when installment state of syringe;
Fig. 2 is the structural representation of the checkout gear of syringe push jack shown in Fig. 1 in the time of syringe installment state.
Description of reference numerals:
The spacing geometrical clamp 2-of 1-elastomeric element 3-dynamometry contact 4-pressure sensor
5-microswitch 6-syringe push jack
Detailed description of the invention
Core of the present invention is to provide a kind of syringe push jack checkout gear for syringe pump, it is provided with microswitch between pressure sensor and power circuit, only have in the time that syringe push jack is mounted to precalculated position, could touch microswitch closure, now starting pressure sensor, thereby avoid the impact on pressure sensor initial value of temperature drift and humidity drift, improved accuracy of detection, avoided occurring false alarm. Another core of the present invention is to provide a kind of syringe pump that comprises said syringe push jack checkout gear.
In order to make those skilled in the art person understand better the present invention program, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1 and Fig. 2, a kind of detailed description of the invention of syringe push jack checkout gear that Fig. 1 provides for invention is in not structural representation when installment state of syringe; Fig. 2 is the structural representation of the checkout gear of syringe push jack shown in Fig. 1 in the time of syringe installment state.
In a kind of detailed description of the invention, syringe push jack checkout gear provided by the present invention is for syringe pump, this syringe push jack checkout gear comprises pressure sensor 4, the dynamometry contact 3 of pressure sensor 4, be arranged on the spacing geometrical clamp 1 of the push jack on cutting somebody's hair, and elastomeric element 2, wherein, pressure sensor 4 is arranged on cutting somebody's hair of syringe pump, dynamometry contact 3 is resisted against on the push jack of injector push-rod end, elastomeric element 2 is arranged between pressure sensor 4 and dynamometry contact 3, between described pressure sensor 4 and its power circuit, be provided with microswitch 5, the normally opened contact of described microswitch 5 is closure in the time that syringe push jack 6 is mounted to precalculated position.
In the time that injector push-rod end push jack is installed, injector push-rod end push jack promotes dynamometry contact 3 to the direction motion near pressure sensor 4, and promote elastomeric element 2 and move to the direction of pressure sensor 4, in the process not contacting with pressure sensor 4 at elastomeric element 2, elastomeric element 2 is all the time in non-compressed state, in the time that elastomeric element 2 touches pressure sensor 4, can export slight pressure to pressure sensor 4, pressure sensor 4 by this tiny signal through amplifying circuit amplify after, transfer on microprocessor, thereby whether the push jack that judges injector push-rod end is installed correctly, meanwhile, in the time that system is moved, whether the pressure transmitting to pressure sensor 4 by elastomeric element 2, can detect the pressure of injector push-rod end push jack, stop up thereby can judge pipeline.
More importantly, due to the microswitch 5 arranging between pressure sensor 4 and power circuit, and the normally opened contact of microswitch 5 is just closed in the time that syringe push jack 6 is mounted to precalculated position, realize the interlock of syringe push jack 6 with microswitch 5, in the time there is no mounting of syringe, pressure sensor 4 is with microswitch 5 in disengaged position, and now pressure sensor 4 is not powered, and does not carry out pressure detecting. Only have when having installed after syringe, due to the compressing of syringe push jack 6, microswitch 5 is triggered, power just can to pressure sensor 4, and start to carry out pressure detecting. The impact that the force value that can ensure like this to record is not waftd by temperature, thus the incidence of false alarm significantly reduced.
Further, the normally opened contact of microswitch 5 is arranged at the side of described dynamometry contact 3 away from described syringe push jack 6; In the time that push jack is mounted to precalculated position, dynamometry contact 3 moves to the direction of microswitch 5, and triggers this microswitch 5, thereby realizes the interlock of microswitch 5 and syringe push jack 6, and structure is comparatively simple, and linkage process is comparatively reliable.
From theory, as long as microswitch 5 can be in the time that syringe push jack 6 be mounted to precalculated position, touched by frame for movement, for example, also can between the normally opened contact of microswitch 5 and syringe push jack 6, the structures such as gangbar be set, in the time that syringe push jack 6 is installed, promote gangbar motion, and touch microswitch 5 closures.
Further, above-mentioned microswitch 5 can be installed on the cathode power supply circuit of described pressure sensor 4, to improve the interlock sensitivity of microswitch 5 and power circuit; Apparently, microswitch 5 is installed on the power circuit of pressure sensor 4, for example, also can be arranged on its negative power supply circuit.
When above-mentioned pressure sensor 4 refers to that with dynamometry contact 3 couplings both contact or position changes between the two, can produce the corresponding signal of telecommunication, and pass to controller or output alarm signal.
Cutting somebody's hair is the Output pressure executing agency of syringe pump, and pressure sensor 4 can be arranged on and be cut somebody's hair above by mount pad, to ensure the installation reliability of pressure sensor 4, simplifies installation process, and this mount pad is specifically as follows D type mount pad.
Dynamometry contact 3 is arranged at cutting somebody's hair on guard shield of syringe pump, and is provided with round boss on the guard shield of cutting somebody's hair, and dynamometry contact 3 is connected in round boss, to avoid dynamometry contact 3 to come off, has improved the installation reliability of dynamometry contact 3.
Further, between elastomeric element 2 and pressure sensor 4, there is the first preset space length that is greater than 0mm. Like this, because the initial pressure that exists the first suitable preset space length, elastomeric element 2 to pass to pressure sensor 4 between elastomeric element 2 and pressure sensor 4 is zero, thereby improved the accuracy that injector push-rod end push jack detects; Therefore, this injector push-rod end push jack checkout gear has not only been avoided the malpractice causing due to injector push-rod end push jack installation site mistake and pipeline blockage, and has further improved the accuracy of injector push-rod end push jack pressure detecting.
Particularly, above-mentioned the first preset space length can be 0.2mm～1.5mm, to both ensured the normal measurement of pressure sensor 4, can ensure again enough certainties of measurement. Further, described the first preset space length is 0.5mm, to adapt to the instructions for use of common equipment.
From theory, above-mentioned the first preset space length is also not limited to 0.2mm～1.5mm, between pressure sensor 4 and elastomeric element 2, there is enough distances as long as can make, so that raising certainty of measurement, can ensure again the normal work of pressure sensor 4, above-mentioned the first preset space length should be determined according to the specification of actual service condition and equipment, for example this first preset space length can also be for being greater than 0mm, be less than the numerical value between 0.2mm, as 0.15mm etc.: can also be for being greater than the numerical value of 1.5mm, as 1.6mm etc.
In above-mentioned detailed description of the invention, between elastomeric element 2 provided by the present invention and dynamometry contact 3, have the second preset space length, apparently, the second preset space length is greater than 0mm, also be that elastomeric element 2, dynamometry contact 3 and pressure sensor 4 threes are independent separately in the time of non-working condition, be separated from each other; Like this, in the time that push rod is installed, can further ensure that push rod imposes on the initial pressure position zero of pressure sensor 4, has further ensured the detection accuracy of detection of pressure sensor 4.
From theory, above-mentioned the second preset space length can be 0.2mm～1.5mm, also can be slightly less than 0.2mm, or be slightly larger than 1.5mm.
Should be appreciated that, above-mentioned the first preset space length and the second preset space length implementation be dimensionally, the distance between pressure sensor 4 surface relative with dynamometry contact 3, is greater than elastomeric element 2 in the party's length upwards.
In above-mentioned detailed description of the invention, dynamometry contact 3 provided by the present invention is closed-in construction, elastomeric element 2 is built in this closed-in construction, thereby shorten the distance between pressure sensor 4 and dynamometry contact 3, also make elastomeric element 2 be merely able at dynamometry contact 3 inner mobile, further improved measurement accuracy. From theory, above-mentioned dynamometry contact 3 is not limited to closed-in construction, can be also traditional structure.
Particularly, above-mentioned elastomeric element 2 can comprise thimble and be sheathed on the spring of thimble periphery, one end of thimble is resisted against dynamometry contact 3, its other end and pressure sensor 4 have described the first preset space length, by thimble as force transferring part, to further improve accuracy of detection: thimble can be provided with hierarchic structure, to realize the axial location of spring, thimble also can not arrange hierarchic structure, now needs, for spring, axial location element is set in addition. Elastomeric element 2 is also not limited to above-mentioned form, and elastomeric element 2 also can be only for having the spring of suitable coefficient of elasticity.
Above-mentioned pressure sensor 4, dynamometry contact 3, thimble and spring arrange with one heart in power transmission direction, to ensure certainty of measurement. Be understandable that, pressure sensor 4 is to contact and realize pressure detecting by the contact on its end face with dynamometry contact 3, therefore, above-mentioned pressure sensor 4 is actually with concentric setting of dynamometry contact 3 contact and the concentric setting of dynamometry contact 3 that refer to pressure sensor 4, and contact is arranged on the end face center of pressure sensor 4 more, therefore, also can be described as pressure sensor 4 and the concentric setting of dynamometry contact 3.
It is pointed out that ordinal numbers such as " first, second " described in literary composition is the different structure in order to distinguish same names, only for convenience, do not represent certain order, more should not be construed as any restriction.
Except said syringe push jack checkout gear, the present invention also provides a kind of syringe pump that comprises above-mentioned push jack checkout gear, and other each several part structures of this syringe pump please refer to prior art, do not repeat them here.
Above a kind of syringe pump provided by the present invention and syringe push jack checkout gear thereof are described in detail. Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof. It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (9)
1. for a syringe push jack checkout gear for syringe pump, it is characterized in that, compriseBe arranged at the pressure sensor (4) on the cutting somebody's hair of described syringe pump, and described pressure sensor (4)Dynamometry contact (3), described in be provided with the spacing geometrical clamp (1) of push jack on cutting somebody's hair, describedBetween pressure sensor (4) and described dynamometry contact (3), be also provided with elastomeric element (2);Between described pressure sensor (4) and its power circuit, be provided with microswitch (5), described micro-Normally opened contact closure in the time that syringe push jack (6) is mounted to precalculated position of moving switch (5).
2. syringe push jack checkout gear according to claim 1, is characterized in that,The normally opened contact of described microswitch (5) is arranged at described dynamometry contact (3) away from described noteOne side of emitter push jack (6).
3. syringe push jack checkout gear according to claim 1, is characterized in that,Described microswitch (5) is installed on the cathode power supply circuit of described pressure sensor (4).
4. according to the syringe push jack checkout gear described in claims 1 to 3 any one, itsBe characterised in that to have and be greater than between described elastomeric element (2) and described pressure sensor (4)The first preset space length of 0mm.
5. syringe push jack checkout gear according to claim 4, is characterized in that,Between described elastomeric element (2) and described dynamometry contact (3), have and be greater than second of 0mmPreset space length.
6. syringe push jack checkout gear according to claim 5, is characterized in that,Described elastomeric element (2) comprises thimble and is sheathed on the spring of described thimble, one of described thimbleEnd is resisted against described dynamometry contact (3), and its other end and described pressure sensor (4) have instituteState the first preset space length.
7. syringe push jack checkout gear according to claim 6, is characterized in that,Described pressure sensor (4), described dynamometry contact (3), described thimble and described spring are passingOn force direction, arrange with one heart.
8. according to the syringe push jack checkout gear described in claims 1 to 3 any one, itsBe characterised in that, described dynamometry contact (3) is arranged at cutting somebody's hair on guard shield of described syringe pump, and instituteState on the guard shield of cutting somebody's hair and be provided with round boss, it is protruding that described dynamometry contact (3) is connected in described circlePlatform.
9. a syringe pump, comprise cut somebody's hair and be arranged at described in cut somebody's hair and syringe push jack (6)Between syringe push jack checkout gear, it is characterized in that described syringe push jack checkout gearFor the syringe push jack checkout gear as described in claim 1 to 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410619783.1A CN105582591A (en) | 2014-11-06 | 2014-11-06 | Injection pump and push plate detection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410619783.1A CN105582591A (en) | 2014-11-06 | 2014-11-06 | Injection pump and push plate detection device thereof |
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| Publication Number | Publication Date |
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| CN105582591A true CN105582591A (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410619783.1A Pending CN105582591A (en) | 2014-11-06 | 2014-11-06 | Injection pump and push plate detection device thereof |
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| CN (1) | CN105582591A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111135381A (en) * | 2019-12-24 | 2020-05-12 | 微泰医疗器械(杭州)有限公司 | Drug delivery drive transmission state monitoring system, method and device |
| CN112971972A (en) * | 2021-02-09 | 2021-06-18 | 杭州堃博生物科技有限公司 | Injection pump control system and control method thereof |
| CN112971973A (en) * | 2021-02-09 | 2021-06-18 | 杭州堃博生物科技有限公司 | Push handle torque adjusting device and method of injector and injection pump |
| CN113786539A (en) * | 2021-08-19 | 2021-12-14 | 深圳市国赛生物技术有限公司 | Syringe device with overvoltage protection function |
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| CN101644585A (en) * | 2008-08-06 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Detection device used for syringe putter of syringe pump |
| CN203458650U (en) * | 2013-08-06 | 2014-03-05 | 珠海市美瑞华医用科技有限公司 | Injection pump capable of detecting error loading of injector |
| CN103977479A (en) * | 2014-02-19 | 2014-08-13 | 苏州泽德医疗器械有限公司 | Injection pump and injector pushrod end part pushing piece detection device for same |
| CN204208120U (en) * | 2014-11-06 | 2015-03-18 | 苏州泽德医疗器械有限公司 | A kind of syringe pump and push jack checkout gear thereof |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2229497B (en) * | 1989-03-10 | 1992-06-03 | Graseby Medical Ltd | Infusion pump |
| CN101644585A (en) * | 2008-08-06 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Detection device used for syringe putter of syringe pump |
| CN203458650U (en) * | 2013-08-06 | 2014-03-05 | 珠海市美瑞华医用科技有限公司 | Injection pump capable of detecting error loading of injector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111135381A (en) * | 2019-12-24 | 2020-05-12 | 微泰医疗器械(杭州)有限公司 | Drug delivery drive transmission state monitoring system, method and device |
| WO2021129403A1 (en) * | 2019-12-24 | 2021-07-01 | 微泰医疗器械(杭州)有限公司 | Monitoring system, method, and apparatus for driving state of dosing drive |
| CN112971972A (en) * | 2021-02-09 | 2021-06-18 | 杭州堃博生物科技有限公司 | Injection pump control system and control method thereof |
| CN112971973A (en) * | 2021-02-09 | 2021-06-18 | 杭州堃博生物科技有限公司 | Push handle torque adjusting device and method of injector and injection pump |
| CN113786539A (en) * | 2021-08-19 | 2021-12-14 | 深圳市国赛生物技术有限公司 | Syringe device with overvoltage protection function |
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Application publication date: 20160518 |
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