CN102393186A - Method for measuring clearance between rolling pump groove and rolling shaft in real time - Google Patents
Method for measuring clearance between rolling pump groove and rolling shaft in real time Download PDFInfo
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- CN102393186A CN102393186A CN2011102512871A CN201110251287A CN102393186A CN 102393186 A CN102393186 A CN 102393186A CN 2011102512871 A CN2011102512871 A CN 2011102512871A CN 201110251287 A CN201110251287 A CN 201110251287A CN 102393186 A CN102393186 A CN 102393186A
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- pump
- rolling shaft
- occlusion
- rolling
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Abstract
The invention provides a method for measuring a clearance between a rolling pump groove and a rolling shaft in real time and relates to a method for measuring a clearance between a pump groove and a rolling shaft, and the method is used for solving the problems that the blood recycling quality grade is influenced and the safety and reliability of an autologous blood recycling technology and an extracorporeal circulation technology are poor because no implementation method for measuring the clearance between the rolling pump groove and the rolling pump exists in the prior art. The method comprises the following steps: fixing a pressure sensor on the outer side wall of a pump pipe; regulating the clearance between the rolling pump groove and the rolling shaft to be 2mm; starting a rolling pump and recording the maximum pressure value of the pressure sensor; sequentially recording the maximum pressure values of the pressure sensor when the clearance between the rolling pump groove and the rolling shaft is 2.1mm, 2.2ellipsis2.9mm; establishing a relation curve of a static clearance and pressure and then recording the relation curve into a singlechip program of the pressure sensor; and measuring the clearance between the rolling pump groove and the rolling shaft in real time through a singlechip in which the relation curve is recorded. The method provided by the invention is used for measuring the clearance between the rolling pump groove and the rolling shaft in real time.
Description
Technical field
The present invention relates to a kind of method of measuring gap between occlusion pump pump groove and the rolling shaft.
Background technology
Adopt that occlusion pump and centrifugal pump are carried, collection blood has advantages such as simple to operate, that expense is low, so occlusion pump and centrifugal pump are widely used in the blood pump system of Medical Instruments such as blood recovery system, cardiopulmonary bypass unit, haemodialysis.
Referring to Figure of description 2; Regulating pump head 5 rotates around the shaft; Regulate setting nut 2 on the pump head and can change the mechanical presses power of the 3 pairs of medical grade silicon rubber pump lines 1 of rolling shaft in the occlusion pump, in the clinical practice use between occlusion pump pump groove 4 and the rolling shaft 3 gap have increase tendency, cause the roll extrusion power deficiency of occlusion pump; Thereby reduced the occlusion pump flow; When the gap was too small between occlusion pump pump groove 4 and the rolling shaft 3 simultaneously, occlusion pump constantly rolled medical grade silicon rubber pump line 1, has increased the damage of blood rbc in the pump line; Because the gap has only 2～3mm between occlusion pump pump groove and the rolling shaft; Only can't accurately judge the size in gap between occlusion pump pump groove and the rolling shaft with naked eyes; Therefore need to measure in real time gap between occlusion pump pump groove and the rolling shaft, at present, gap adjustment is entirely with operator's working experience between occlusion pump pump groove and the rolling shaft; There are not accurate data that the foundation of regulating the gap is provided; Instrument abnormal conditions occur and just can pinpoint the problems in the operation generally speaking, not only influences the grade that blood reclaims quality, has also reduced from body blood recovery technology, extracorporal circulatory system technology security and the reliability in clinical practice.
To sum up, at present implement to measure the method in gap between occlusion pump pump groove and the rolling shaft, not only influence grade that blood reclaims quality and also reduced from body blood recovery technology, extracorporal circulatory system technology security and reliability in clinical practice.
Summary of the invention
The present invention is for solving the method for not implementing to measure gap between occlusion pump pump groove and the rolling shaft at present; Influence that blood reclaims quality grade and from body blood recovery technology, extracorporal circulatory system technology in the security of clinical practice and the problem of poor reliability, and then the method in gap between a kind of real-time measurement occlusion pump pump groove and the rolling shaft is provided.
The method in gap realizes according to following steps between real-time measurement occlusion pump pump groove of the present invention and the rolling shaft:
Open occlusion pump in step 6, the clinical practice use, measure the gap between occlusion pump pump groove and the rolling shaft in real time through the single-chip microcomputer that counts relation curve.
The present invention has following beneficial effect:
The method in gap counts the relation curve of static clearance and pressure in the SCM program of pressure transducer between real-time measurement occlusion pump pump groove of the present invention and the rolling shaft; Single-chip microcomputer through counting relation curve is measured the gap between occlusion pump pump groove and the rolling shaft in real time; Accurately real time data provides foundation for the gap of in time regulating between occlusion pump pump groove and the rolling shaft; The damage of blood rbc in the pump line when having avoided the gap too small has improved blood and has reclaimed quality; The roll extrusion power of occlusion pump is not enough and reduce the occlusion pump flow when also having avoided simultaneously excesssive gap between occlusion pump pump groove and the rolling shaft, has improved from body blood recovery technology, extracorporal circulatory system technology security and the reliability in clinical practice.
Description of drawings
Fig. 1 is a pressure transducer and the outside process flow diagram that is connected in the embodiment one of the present invention, and Fig. 2 is that the master of occlusion pump looks synoptic diagram.
Embodiment
Embodiment one: shown in Fig. 1～2, it is following that this embodiment is measured the method step in gap between occlusion pump pump groove and the rolling shaft in real time:
Open occlusion pump in step 6, the clinical practice use, measure the gap between occlusion pump pump groove and the rolling shaft in real time through the single-chip microcomputer that counts relation curve.
Gap between groove 4 of occlusion pump pump described in step 2 and the step 4 and the rolling shaft 3 is a static clearance; Gap between the pump of occlusion pump described in step 6 groove 4 and the rolling shaft 3 is a dynamic clearance.
When the gap exceeded 2.1～2.9mm between occlusion pump pump groove 4 and the rolling shaft 3, the audible-visual annunciator that is connected with single-chip microcomputer was reported to the police.
Embodiment two: the pressure in this embodiment step 1 between pressure transducer and the medical grade silicon rubber pump line 1 is 30kpa.This pressure is to be used to set up the benchmark that concerns between static clearance and the pressure, and numerical value is the linear sensitizing range of pressure transducer, can guarantee the linearity that is changed to that pressure takes place under this benchmark.Other is identical with embodiment one.
Embodiment three: reclaiming the machine blood flow in this embodiment step 3 is 500ml/min.This flow is the normality value of blood recovery system liquid occlusion pump job applications, with this value carry out relation between measure static gap and the pressure will make dynamic clearance in the actual clinical operating process confirm more accurate.Other is identical with embodiment one.
Claims (3)
1. method of measuring in real time gap between occlusion pump pump groove and the rolling shaft, the method step that it is characterized in that measuring in real time gap between occlusion pump pump groove and the rolling shaft is following:
Step 1, at first that medical grade silicon rubber pump line (1) is interior blood empty, and pressure transducer are fixed on the lateral wall of medical grade silicon rubber pump line through bundling belt then, guarantee the constant pressure between pressure transducer and the medical grade silicon rubber pump line (1) during binding;
Step 2, regulate the setting nut (2) on the occlusion pump, make that the gap is 2mm between occlusion pump pump groove (4) and the rolling shaft (3);
Step 3, unlatching occlusion pump, setting recovery machine blood flow is 400～600ml/min, the maximum pressure value of record pressure transducer is closed occlusion pump;
Step 4, repeating step two and step 3 write down the maximum pressure value of pressure transducer when the gap is 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm between occlusion pump pump groove (4) and the rolling shaft (3) successively;
Step 5, record the relation curve that a series of maximum pressure values are set up static clearance and pressure, the relation curve of static clearance and pressure is counted in the SCM program of pressure transducer according to step 4;
Open occlusion pump in step 6, the clinical practice use, measure the gap between occlusion pump pump groove and the rolling shaft in real time through the single-chip microcomputer that counts relation curve.
2. the method in gap between a kind of real-time measurement occlusion pump pump groove according to claim 1 and the rolling shaft, it is characterized in that: the pressure in the step 1 between pressure transducer and the medical grade silicon rubber pump line (1) is 30kpa.
3. the method in gap between a kind of real-time measurement occlusion pump pump groove according to claim 1 and 2 and the rolling shaft is characterized in that: reclaiming the machine blood flow in the step 3 is 500ml/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110251287 CN102393186B (en) | 2011-08-30 | 2011-08-30 | Method for measuring clearance between rolling pump groove and rolling shaft in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110251287 CN102393186B (en) | 2011-08-30 | 2011-08-30 | Method for measuring clearance between rolling pump groove and rolling shaft in real time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102393186A true CN102393186A (en) | 2012-03-28 |
| CN102393186B CN102393186B (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201110251287 Expired - Fee Related CN102393186B (en) | 2011-08-30 | 2011-08-30 | Method for measuring clearance between rolling pump groove and rolling shaft in real time |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889849A (en) * | 2012-09-18 | 2013-01-23 | 哈尔滨医科大学 | Micro pump distance automatic detection alarm of roller pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87212650U (en) * | 1987-12-19 | 1988-12-07 | 周国明 | Safe controller for extracorporeal circulation blood pump |
| CN2548708Y (en) * | 2002-08-28 | 2003-05-07 | 北京京精医疗设备有限公司 | Connector between centrifugal cup and motor of blood recovering device |
| US7013727B2 (en) * | 2003-05-23 | 2006-03-21 | Gambro Dasco S.P.A. | Dialysis machine for actuating a method for detecting a liquid level in a container in a circuit |
| CN200946561Y (en) * | 2006-07-28 | 2007-09-12 | 北京京精医疗设备有限公司 | Liquid roller pump |
| CN101336343A (en) * | 2006-01-26 | 2008-12-31 | 株式会社Jms | Roller pump |
| CN101669122A (en) * | 2007-04-19 | 2010-03-10 | 甘布罗伦迪亚股份公司 | Fluid processing medical apparatus and method for setting-up a fluid processing medical apparatus |
| US20110163030A1 (en) * | 2010-01-07 | 2011-07-07 | Fresenius Medical Care Holdings, Inc. | Dialysis Systems and Methods |
-
2011
- 2011-08-30 CN CN 201110251287 patent/CN102393186B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87212650U (en) * | 1987-12-19 | 1988-12-07 | 周国明 | Safe controller for extracorporeal circulation blood pump |
| CN2548708Y (en) * | 2002-08-28 | 2003-05-07 | 北京京精医疗设备有限公司 | Connector between centrifugal cup and motor of blood recovering device |
| US7013727B2 (en) * | 2003-05-23 | 2006-03-21 | Gambro Dasco S.P.A. | Dialysis machine for actuating a method for detecting a liquid level in a container in a circuit |
| CN101336343A (en) * | 2006-01-26 | 2008-12-31 | 株式会社Jms | Roller pump |
| CN200946561Y (en) * | 2006-07-28 | 2007-09-12 | 北京京精医疗设备有限公司 | Liquid roller pump |
| CN101669122A (en) * | 2007-04-19 | 2010-03-10 | 甘布罗伦迪亚股份公司 | Fluid processing medical apparatus and method for setting-up a fluid processing medical apparatus |
| US20110163030A1 (en) * | 2010-01-07 | 2011-07-07 | Fresenius Medical Care Holdings, Inc. | Dialysis Systems and Methods |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889849A (en) * | 2012-09-18 | 2013-01-23 | 哈尔滨医科大学 | Micro pump distance automatic detection alarm of roller pump |
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| CN102393186B (en) | 2013-09-18 |
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