CN101470036B - Block pressure detection and processing equipment and method for injection pump - Google Patents
Block pressure detection and processing equipment and method for injection pump Download PDFInfo
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- CN101470036B CN101470036B CN2007103063074A CN200710306307A CN101470036B CN 101470036 B CN101470036 B CN 101470036B CN 2007103063074 A CN2007103063074 A CN 2007103063074A CN 200710306307 A CN200710306307 A CN 200710306307A CN 101470036 B CN101470036 B CN 101470036B
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- pressure
- blockage
- syringe pump
- leading screw
- transfer element
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Abstract
The invention discloses a blockage pressure detecting processing device for injection pumps, comprising a frame; a lead screw which is connected with the frame via positive or reversed rotation, is provided with a nut and is connected with the bolus injection head of the injection pump via the nut; a pressure sensor fixed on the frame; and a force transmission component fixed on the pressure sensor, whose first end is axially preloaded on the end of the lead screw for transmitting the axial pressure of the lead screw to the pressure sensor. The invention further discloses a blockage pressure detecting processing method for injection pumps, comprising: detecting the blockage pressure of an injection pump; according to the difference between the blockage pressure and a preset value, controlling a step motor, to preload the force transmission component on the end face of the lead screw in the detection and treatment on the blockage pressure of the injection pump, and keeping the force transmission component against the end face of the lead screw. The invention has high stability, can real-timely detect the blockage pressure of injection pump on the bolus injection head, thereby confirming the performance of injection pumps and alarming for dropped injection pump caused by manual factors.
Description
Technical field
The present invention relates to a kind of medical injection pump and detect treating apparatus and method, particularly, relate to a kind of medical injection pump block pressure detection and processing equipment and method.
Background technology
Medical micro-injection pump is a kind of transfusion auxiliary medical equipment, and being applicable to needs the accurately various transfusion occasions of control transfusion speed, amount of infusion, especially often uses in the ICU ward in hospital at present, and is applied to mostly to patient injection soup stoste.The life security of the amount of infusion relation person is therefore, very high for the requirement of the amount of infusion of micro-injection pump.
In the liquid flow process, because pipeline is oversize, bending or soup thickness etc. is former thereby produce blockage pressure, thereby cause the blockage pressure of syringe pump tube wall to increase, make soup to flow.
In order to address this problem; The control chip of existing apparatus can compare the blockage pressure of syringe pump and the setting value of pressure transducer; Correspondingly driving lead-screw drive mechanism with the forward or reverse through motor controllably moves along both direction; Thereby after can unloading in blockage pressure, promote syringe pump again and inject syringe pump.But the force transfer element of existing apparatus can not keep precompressed on leading screw always; Owing to reasons such as vibrations or rigging errors; When detecting processing syringe pump blockage pressure; The situation that exists force transfer element to separate with pressure transducer, thus cause detecting the blockage pressure of handling syringe pump in real time, so existing apparatus its stability when detecting the processing blockage pressure is bad.This makes the micro-injection pump performance be affected, and is dangerous in liquid medicine injection stoste especially for the patient in ICU ward.And syringe pump because artificial origin etc. come off, needs system in time to provide warning sometimes.
Summary of the invention
Technical matters to be solved by this invention is: a kind of syringe pump block pressure detection and processing equipment and method are provided, can measure the syringe pump blockage pressure in real time, have good stable property.
For solving the problems of the technologies described above, on the one hand, the present invention provides a kind of syringe pump block pressure detection and processing equipment, comprising: support; Leading screw, it can be rotationally connected with on the support forward or backwards, and leading screw is provided with nut, is connected to the head of injecting of syringe pump through nut; Pressure transducer is fixed on the support; And force transfer element, be fixed in pressure transducer, and first end precompressed vertically of force transfer element is on the end of leading screw, the axle pressure of leading screw is passed to pressure transducer.
Preferably, force transfer element is arranged to form with pressure transducer the column structure of interference fit, and first end is arranged to taper or truncated cone shape is protruding.
Preferably, contacting between force transfer element and the leading screw is some contact or face contact.
On the other hand, the present invention also provides a kind of syringe pump blockage pressure detecting processing method, comprising: the blockage pressure that detects syringe pump; According to the difference control step motor between blockage pressure and the setting value; It is characterized in that, in the step that detects the blockage pressure of handling syringe pump, make the force transfer element precompressed on the end face of leading screw; And remain the end face that compresses leading screw; Wherein, force transfer element is fixed in pressure transducer, and leading screw is connected to the head of injecting of syringe pump through nut.
Preferably, when blockage pressure during less than setting value, the control step motor just then inject head.
Preferably, when blockage pressure during greater than setting value, according to the number of turns of the counter-rotating of the difference calculated step motor needs between blockage pressure and the setting value; And the required number of turns of control step motor counter-rotating and retreat and inject head.
Preferably, when blockage pressure during, send first alerting signal greater than setting value.
Preferably, when blockage pressure is zero and stepper motor when in running order, send second alerting signal, second alerting signal is different with first alerting signal.
Preferably, second alerting signal and first alerting signal are sound or signal lamp flicker.
Preferably, the value that shows blockage pressure in real time.
The invention has the beneficial effects as follows: because force transfer element is fixed on the pressure transducer; Its first end precompressed is on the end of leading screw; Promptly be pressed on all the time on the end of leading screw,, can detect processing in real time and push away the suffered syringe pump blockage pressure of column cap so this device stability is better.Thereby improved the injection pump performance, guaranteed patient's transfusion safety, in addition when syringe pump because artificial origin waits when coming off, the present invention sends the syringe pump warning that comes off.
Description of drawings
Below in conjunction with accompanying drawing specific embodiment of the present invention is described.But the multitude of different ways that the present invention can be defined by the claims and cover is implemented.Identical in the accompanying drawings parts are represented with identical label.
Fig. 1 is the structural representation of syringe pump block pressure detection and processing equipment of the present invention.
Fig. 2 is the process flow diagram of syringe pump blockage pressure detecting processing method of the present invention.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the present invention is described.
Fig. 1 shows the structure of syringe pump block pressure detection and processing equipment of the present invention, comprising: support 7, leading screw 4, pressure transducer 5, force transfer element 6, wherein, leading screw 41 is fixedly connected through injecting of on it nut 3 and syringe pump is set.From Fig. 1, can find out; The pressure transducer 5 that force transfer element 6 is arranged to and is fixed on the support 7 forms the friction tight column structure of axis hole; It is protruding in the taper of leading screw 4 ends or truncated cone shape that its first end is precompressed, some cooperates or the face cooperation thereby remain with leading screw 4.The two ends of leading screw 4 are supported on the support 7 through the bearing (not shown); Under the driving of motor (not shown), can rotate forward or backwards; Thereby can advance or retreat and inject 1 correspondingly through nut 3; The blockage pressure of syringe pump 2 passes to pressure transducer 5 through pushing away column cap 1, nut 3, leading screw 4, force transfer element 6 and since force transfer element 6 along leading screw 4 axial precompressed on its end, so force transfer element 6 can be in real time the blockage pressure of syringe pump 2 is passed to pressure transducer 5.
During work, motor is just changeing and is driving leading screw 4 rotations driving and to push away the nut 3 that column cap 1 is fixedly connected, thereby the column cap 1 that pushes away of propelling syringe pump is injected.When advancing injection, the blockage pressure of syringe pump 2 successively through inject 1, nut 3, leading screw 4, force transfer element 6 pass to pressure transducer 5 in real time.When blockage pressure continues to inject 1 during less than the setting value of pressure transducer 5; And when blockage pressure during greater than the setting value of pressure transducer 5 warning device be triggered; Judge that according to the blockage pressure detecting value motor needs several circles that reverse can eliminate (unloading) to the tube wall pressure of syringe pump 2 fully with the timed unit (not shown), make and not only can accomplish to eliminate pressure but also be unlikely to counter-rotating to cause backflow of blood too much.Pressure transducer 5 output signal control motors drive the rotation of leading screw 4 positive dirctions after unloading, inject to continue pushing away column cap 1.
Fig. 2 shows the process flow diagram of syringe pump blockage pressure detecting processing method of the present invention, knows that from figure this method comprises: power-up initializing; Afterwards, get into the self check step, do not satisfy (N) when self check and detect when handling the condition that blockage pressure begins, repeat the self check step, when satisfying condition, get into the step of the blockage pressure that detects syringe pump 2 when (Y); According to 5 differences that detect blockage pressure of pressure transducer, warning that the may command stepper motor just changes, reports to the police and reverses or syringe pump 2 comes off; Wherein, be fixed with force transfer element 6 on the pressure transducer 5, force transfer element 6 precompressed are in the end of leading screw 4, and leading screw 4 injects 1 through what nut 3 was connected to syringe pump.In the step that detects the blockage pressure of handling syringe pump 2, force transfer element 6 equal precompressed promptly remain the end face that compresses leading screw 4 on the end face of leading screw 4.Particularly; When detecting blockage pressure, send first alerting signal greater than setting value; Simultaneously detected value is compared with setting value and the calculated step motor the number of turns that will reverse; The number of turns that will change of control step motor counter-rotating institute and making is injected and is retreated then; Otherwise when detecting blockage pressure less than setting value, if detected value greater than zero less than setting value the control step motor just then inject head, if detected value equals zero and stepper motor is in working condition then send second alerting signal (being different from first alerting signal) that syringe pump 2 comes off.Selectively, second alerting signal and first alerting signal are sound or signal lamp flicker.Can find out also that from Fig. 2 this method further comprises: the value that shows blockage pressure in real time.
Above embodiment is only in order to technical scheme of the present invention to be described but not limit it; Although the present invention is specified with reference to preferred embodiment; Those of ordinary skill in the art is to be understood that; Can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and the scope of technical scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. a syringe pump block pressure detection and processing equipment is characterized in that, comprising:
Support (7);
Leading screw (4), it can be rotationally connected with on the said support (7) forward or backwards, and said leading screw (4) is provided with nut (3), is connected to inject (1) of syringe pump through said nut (3);
Pressure transducer (5) is fixed on the said support; And
Force transfer element (6) is fixed in said pressure transducer (5), and first end precompressed vertically of said force transfer element (6) is on the end of said leading screw (4), and the axle pressure of said leading screw (4) is passed to said pressure transducer (5).
2. syringe pump block pressure detection and processing equipment according to claim 1, wherein, said force transfer element (6) is arranged to form with said pressure transducer (5) column structure of interference fit, and said first end is arranged to taper or truncated cone shape is protruding.
3. syringe pump block pressure detection and processing equipment according to claim 2, wherein, contacting between said force transfer element (6) and the said leading screw (4) is some contact or face contact.
4. syringe pump blockage pressure detecting processing method comprises:
Detect the blockage pressure of syringe pump;
According to the difference control step motor between said blockage pressure and the setting value,
It is characterized in that, in the step of the blockage pressure that detects syringe pump (2),
Make force transfer element (6) precompressed on the end face of leading screw (4), and remain the end face that compresses leading screw (4), wherein, force transfer element (6) is fixed in pressure transducer (5), and leading screw (4) is connected to inject (1) of syringe pump through nut (3).
5. method according to claim 4 is characterized in that, said method further comprises:
When said blockage pressure during, controlling said stepper motor just then advance the said head (1) of injecting less than said setting value.
6. method according to claim 4 is characterized in that, said method further comprises:
When said blockage pressure during greater than said setting value, according to the number of turns of the counter-rotating of the difference calculated step motor needs between said blockage pressure and the said setting value; And
Control the said stepper motor required number of turns of counter-rotating and retreat the said head (1) of injecting.
7. method according to claim 6 is characterized in that, said method further comprises:
When said blockage pressure during, send first alerting signal greater than said setting value.
8. method according to claim 7 is characterized in that, said method further comprises:
When said blockage pressure is zero and said stepper motor when in running order, send second alerting signal that syringe pump (2) comes off, said second alerting signal is different with said first alerting signal.
9. method according to claim 8 is characterized in that, said second alerting signal and said first alerting signal are sound or signal lamp flicker.
10. method according to claim 4 is characterized in that, said method further comprises:
The value that shows said blockage pressure in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103063074A CN101470036B (en) | 2007-12-28 | 2007-12-28 | Block pressure detection and processing equipment and method for injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103063074A CN101470036B (en) | 2007-12-28 | 2007-12-28 | Block pressure detection and processing equipment and method for injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101470036A CN101470036A (en) | 2009-07-01 |
| CN101470036B true CN101470036B (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007103063074A Expired - Fee Related CN101470036B (en) | 2007-12-28 | 2007-12-28 | Block pressure detection and processing equipment and method for injection pump |
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| CN (1) | CN101470036B (en) |
Families Citing this family (16)
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| CN102008769B (en) * | 2009-09-08 | 2013-10-23 | 北京谊安医疗系统股份有限公司 | Force transmission device and injection pump |
| CN102114282A (en) * | 2009-12-31 | 2011-07-06 | 北京谊安医疗系统股份有限公司 | Mechanism for detecting blockage of syringe |
| CN102116690B (en) * | 2009-12-31 | 2012-10-03 | 北京谊安医疗系统股份有限公司 | Pressing device of pressure sensor |
| CN102116603B (en) * | 2009-12-31 | 2012-10-03 | 北京谊安医疗系统股份有限公司 | Installation in-place detection mechanism of injector flange used for injection pump |
| CN102961801A (en) * | 2011-08-31 | 2013-03-13 | 浙江史密斯医学仪器有限公司 | Infusion pipeline blockage alarm value setting device and method |
| CN103969696A (en) * | 2014-02-19 | 2014-08-06 | 苏州泽德医疗器械有限公司 | Injection pump detecting method and device |
| CN105067180B (en) * | 2015-08-04 | 2018-01-12 | 深圳市仕浦电气有限公司 | Detection means and method for syringe pump blockage pressure |
| CN105319003B (en) * | 2015-11-13 | 2019-06-28 | 南京感控通化工产品经营部 | Measure the device and method of high pressure injector pressure |
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| CN109420220B (en) * | 2017-08-24 | 2024-02-20 | 南京巨鲨显示科技有限公司 | Self-adaptive flow rate control method for high-pressure injector |
| CN107432965A (en) * | 2017-09-05 | 2017-12-05 | 杨斗华 | A kind of Portable single-channel micro-injection pump |
| WO2019052111A1 (en) * | 2017-09-12 | 2019-03-21 | 美敦力公司 | Fluid infusion device and driving system therefor |
| JP7105791B2 (en) * | 2017-09-28 | 2022-07-25 | テルモ株式会社 | Chemical-solution administration device and control method for chemical-solution administration device |
| WO2019110778A1 (en) * | 2017-12-07 | 2019-06-13 | F. Hoffmann-La Roche Ag | Validation apparatus for validating a force testing machine, method of validating a force testing machine and method of measuring forces |
| CN109663176A (en) * | 2019-01-02 | 2019-04-23 | 青海省第四人民医院 | A kind of multifunctional injector |
| CN114563205B (en) * | 2022-04-28 | 2022-07-29 | 苏州恒瑞迦俐生生物医药科技有限公司 | Medical injection pump performance detection tool |
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Patent Citations (7)
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| US4815313A (en) * | 1987-11-16 | 1989-03-28 | Abbott Laboratories | Syringe pressure calibration reference |
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| Publication number | Publication date |
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| CN101470036A (en) | 2009-07-01 |
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