WO2006016122A1 - Pressure monitor for peristaltic pumps - Google Patents
Pressure monitor for peristaltic pumps Download PDFInfo
- Publication number
- WO2006016122A1 WO2006016122A1 PCT/GB2005/003048 GB2005003048W WO2006016122A1 WO 2006016122 A1 WO2006016122 A1 WO 2006016122A1 GB 2005003048 W GB2005003048 W GB 2005003048W WO 2006016122 A1 WO2006016122 A1 WO 2006016122A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- pressure
- jaws
- pump
- force
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0081—Special features systems, control, safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
- F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/08—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having peristaltic action
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
Definitions
- the present disclosure generally relates to monitoring of pressure from peristaltic pumps.
- Peristaltic pumps have been used for many years pumping relatively low volumes. They are by design positive displacement pumps with the pumped flow rate set by speed of the pump. In some situations flow interruptions downstream of the pump can result in high back pressures. These high pressures can damage the flexible tube forming the pump element or cause damage to the downstream components.
- the segregation of the pumped fluid is important to maintain purity or sterility. This cleanliness is ensured by making all of the components in contact with the liquid single use. Where a pressure monitor is required as well, this necessitates the pressure sensor or diaphragm / membrane above to also be single use.
- the proposal therefore measures the pressure inside the tube by deforming a section of the pressure tube against a force transducer
- the pressure inside the peristaltic pump tubing is measured by deforming the outside of the tube by a known amount against a force transducer.
- the initial force required to deform the tube with no pressure or flow is used as a datum for further force measurements (the force transducer is 'zeroed' when the tubing is first installed in the pump / pressure monitor. Measurements of the force therefore enable the pressure inside the pump tubing to be calculated
- Variations in the tube geometry can affect the effective area flattened by the force transducer and therefore affect absolute pressure calculation, however the pressure repeatability is good, making the signal suitable for flow control of the pump.
- the absolute pressure is also accurate enough for over pressure sensing and the signal can be used for overpressure protection alarms.
- FIGURE 1 shows an overview of the pump and pressure monitor
- FIGURE 2 shows the pressure monitor, viewed perpendicular to the tube.
- the peristaltic tube is also pressed against a force sensor 7 by a moving anvil 8.
- FIG 2 which is a transverse section across the measuring point.
- the top moving anvil 8 travels down to a fixed location to compress the tube 6.
- the tube 2 is deformed so that a flat 9 is formed against the measuring face.
- the width of the flat is determined by the diameter and wall thickness of the tube.
- the pressure inside the tube reacts with the force sensor over this width, and the length of the anvil / sensor. This pressure multiplied by the area produces the force measured by the sensor.
- the initial force required to deform the tube is zeroed out when the tube is installed in the pump and sensor. Correct sensing of the pressure occurs where this deformation force is constant (selection of appropriate tube materials and tube pre-forming).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0417940.4 | 2004-08-12 | ||
GB0417940A GB2417052B (en) | 2004-08-12 | 2004-08-12 | Pressure monitor for peristaltic pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006016122A1 true WO2006016122A1 (en) | 2006-02-16 |
Family
ID=33017363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2005/003048 WO2006016122A1 (en) | 2004-08-12 | 2005-08-03 | Pressure monitor for peristaltic pumps |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2417052B (en) |
WO (1) | WO2006016122A1 (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8858185B2 (en) | 2010-06-23 | 2014-10-14 | Hospira, Inc. | Fluid flow rate compensation system using an integrated conductivity sensor to monitor tubing changes |
CN105424268A (en) * | 2015-12-15 | 2016-03-23 | 深圳市深科医疗器械技术开发有限公司 | Pressure detection device for fluid in hose |
US10022498B2 (en) | 2011-12-16 | 2018-07-17 | Icu Medical, Inc. | System for monitoring and delivering medication to a patient and method of using the same to minimize the risks associated with automated therapy |
US10166328B2 (en) | 2013-05-29 | 2019-01-01 | Icu Medical, Inc. | Infusion system which utilizes one or more sensors and additional information to make an air determination regarding the infusion system |
US10342917B2 (en) | 2014-02-28 | 2019-07-09 | Icu Medical, Inc. | Infusion system and method which utilizes dual wavelength optical air-in-line detection |
US10430761B2 (en) | 2011-08-19 | 2019-10-01 | Icu Medical, Inc. | Systems and methods for a graphical interface including a graphical representation of medical data |
US10463788B2 (en) | 2012-07-31 | 2019-11-05 | Icu Medical, Inc. | Patient care system for critical medications |
US10578474B2 (en) | 2012-03-30 | 2020-03-03 | Icu Medical, Inc. | Air detection system and method for detecting air in a pump of an infusion system |
US10596316B2 (en) | 2013-05-29 | 2020-03-24 | Icu Medical, Inc. | Infusion system and method of use which prevents over-saturation of an analog-to-digital converter |
US10635784B2 (en) | 2007-12-18 | 2020-04-28 | Icu Medical, Inc. | User interface improvements for medical devices |
US10656894B2 (en) | 2017-12-27 | 2020-05-19 | Icu Medical, Inc. | Synchronized display of screen content on networked devices |
US10850024B2 (en) | 2015-03-02 | 2020-12-01 | Icu Medical, Inc. | Infusion system, device, and method having advanced infusion features |
US10874793B2 (en) | 2013-05-24 | 2020-12-29 | Icu Medical, Inc. | Multi-sensor infusion system for detecting air or an occlusion in the infusion system |
US11135360B1 (en) | 2020-12-07 | 2021-10-05 | Icu Medical, Inc. | Concurrent infusion with common line auto flush |
US11246985B2 (en) | 2016-05-13 | 2022-02-15 | Icu Medical, Inc. | Infusion pump system and method with common line auto flush |
US11278671B2 (en) | 2019-12-04 | 2022-03-22 | Icu Medical, Inc. | Infusion pump with safety sequence keypad |
US11324888B2 (en) | 2016-06-10 | 2022-05-10 | Icu Medical, Inc. | Acoustic flow sensor for continuous medication flow measurements and feedback control of infusion |
US11344668B2 (en) | 2014-12-19 | 2022-05-31 | Icu Medical, Inc. | Infusion system with concurrent TPN/insulin infusion |
US11344673B2 (en) | 2014-05-29 | 2022-05-31 | Icu Medical, Inc. | Infusion system and pump with configurable closed loop delivery rate catch-up |
US11883361B2 (en) | 2020-07-21 | 2024-01-30 | Icu Medical, Inc. | Fluid transfer devices and methods of use |
US11972395B2 (en) | 2023-02-01 | 2024-04-30 | Icu Medical, Inc. | Systems and methods for a graphical interface including a graphical representation of medical data |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8062008B2 (en) | 2007-09-27 | 2011-11-22 | Curlin Medical Inc. | Peristaltic pump and removable cassette therefor |
US7934912B2 (en) | 2007-09-27 | 2011-05-03 | Curlin Medical Inc | Peristaltic pump assembly with cassette and mounting pin arrangement |
US8083503B2 (en) | 2007-09-27 | 2011-12-27 | Curlin Medical Inc. | Peristaltic pump assembly and regulator therefor |
ES2667065T3 (en) * | 2012-11-29 | 2018-05-09 | Gambro Lundia Ab | Extracorporeal blood circuit with non-invasive pressure sensor |
EP3026413A1 (en) * | 2014-11-27 | 2016-06-01 | Siemens Aktiengesellschaft | Determining an internal pressure in a pressurized hose |
CN105258824B (en) * | 2015-11-05 | 2018-04-13 | 白云 | A kind of shield tunnel Water And Earth Pressures monitoring rod |
DE102019102432A1 (en) * | 2019-01-31 | 2020-08-06 | Technische Universität Dresden | Peristaltic pump |
Citations (5)
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US4468219A (en) * | 1983-12-20 | 1984-08-28 | International Business Machines Corporation | Pump flow rate compensation system |
US4657529A (en) * | 1984-06-29 | 1987-04-14 | Hemascience Laboratories, Inc. | Blood extraction and reinfusion flow control system and method |
US4976151A (en) * | 1987-02-17 | 1990-12-11 | Sharp Kabushiki Kaisha | Method and device for detecting blocked condition in a tube of a liquid infusion pump |
US4998914A (en) * | 1988-02-17 | 1991-03-12 | Peter P. Wiest | Procedure for the perfusion of cavities in objects and device for executing the procedure |
DE4013403A1 (en) * | 1990-04-26 | 1991-11-07 | Infurex Ag | DEVICE FOR DETECTING THE INTERNAL PRESSURE CONDITIONS IN FLEXIBLE PIPES |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62212719A (en) * | 1986-03-14 | 1987-09-18 | Omron Tateisi Electronics Co | Mouse |
GB2198239A (en) * | 1986-11-27 | 1988-06-08 | Ford Motor Co | Monitoring fluid pressure in a flexible pipe |
DE3918534A1 (en) * | 1989-06-07 | 1990-12-20 | Braun Melsungen Ag | PRESSURE SENSOR FOR INFUSION PIPES |
US5701646A (en) * | 1990-02-02 | 1997-12-30 | Isco, Inc. | Method of making a sensor |
US6871551B2 (en) * | 2000-06-28 | 2005-03-29 | Endress + Hauser Wetzer Gmbh + Co. Kg | Apparatus for generating and conducting a fluid flow, and method of monitoring said apparatus |
EP1167767B1 (en) * | 2000-06-28 | 2006-06-14 | ENDRESS + HAUSER WETZER GmbH + Co. KG | Flow control for a peristaltic pump |
DE20206474U1 (en) * | 2002-04-24 | 2003-09-04 | Braun Melsungen Ag | Pressure sensor for infusion hose pumps |
DE10231461B4 (en) * | 2002-07-05 | 2004-06-24 | Korejwo, Richard, Dipl.-Ing. | Fluid pump for medical applications and measuring chamber therefor |
-
2004
- 2004-08-12 GB GB0417940A patent/GB2417052B/en not_active Expired - Fee Related
-
2005
- 2005-08-03 WO PCT/GB2005/003048 patent/WO2006016122A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4468219A (en) * | 1983-12-20 | 1984-08-28 | International Business Machines Corporation | Pump flow rate compensation system |
US4657529A (en) * | 1984-06-29 | 1987-04-14 | Hemascience Laboratories, Inc. | Blood extraction and reinfusion flow control system and method |
US4976151A (en) * | 1987-02-17 | 1990-12-11 | Sharp Kabushiki Kaisha | Method and device for detecting blocked condition in a tube of a liquid infusion pump |
US4998914A (en) * | 1988-02-17 | 1991-03-12 | Peter P. Wiest | Procedure for the perfusion of cavities in objects and device for executing the procedure |
DE4013403A1 (en) * | 1990-04-26 | 1991-11-07 | Infurex Ag | DEVICE FOR DETECTING THE INTERNAL PRESSURE CONDITIONS IN FLEXIBLE PIPES |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10635784B2 (en) | 2007-12-18 | 2020-04-28 | Icu Medical, Inc. | User interface improvements for medical devices |
US8858185B2 (en) | 2010-06-23 | 2014-10-14 | Hospira, Inc. | Fluid flow rate compensation system using an integrated conductivity sensor to monitor tubing changes |
US11599854B2 (en) | 2011-08-19 | 2023-03-07 | Icu Medical, Inc. | Systems and methods for a graphical interface including a graphical representation of medical data |
US11004035B2 (en) | 2011-08-19 | 2021-05-11 | Icu Medical, Inc. | Systems and methods for a graphical interface including a graphical representation of medical data |
US10430761B2 (en) | 2011-08-19 | 2019-10-01 | Icu Medical, Inc. | Systems and methods for a graphical interface including a graphical representation of medical data |
US10022498B2 (en) | 2011-12-16 | 2018-07-17 | Icu Medical, Inc. | System for monitoring and delivering medication to a patient and method of using the same to minimize the risks associated with automated therapy |
US11376361B2 (en) | 2011-12-16 | 2022-07-05 | Icu Medical, Inc. | System for monitoring and delivering medication to a patient and method of using the same to minimize the risks associated with automated therapy |
US10578474B2 (en) | 2012-03-30 | 2020-03-03 | Icu Medical, Inc. | Air detection system and method for detecting air in a pump of an infusion system |
US11933650B2 (en) | 2012-03-30 | 2024-03-19 | Icu Medical, Inc. | Air detection system and method for detecting air in a pump of an infusion system |
US10463788B2 (en) | 2012-07-31 | 2019-11-05 | Icu Medical, Inc. | Patient care system for critical medications |
US11623042B2 (en) | 2012-07-31 | 2023-04-11 | Icu Medical, Inc. | Patient care system for critical medications |
US10874793B2 (en) | 2013-05-24 | 2020-12-29 | Icu Medical, Inc. | Multi-sensor infusion system for detecting air or an occlusion in the infusion system |
US10166328B2 (en) | 2013-05-29 | 2019-01-01 | Icu Medical, Inc. | Infusion system which utilizes one or more sensors and additional information to make an air determination regarding the infusion system |
US10596316B2 (en) | 2013-05-29 | 2020-03-24 | Icu Medical, Inc. | Infusion system and method of use which prevents over-saturation of an analog-to-digital converter |
US11596737B2 (en) | 2013-05-29 | 2023-03-07 | Icu Medical, Inc. | Infusion system and method of use which prevents over-saturation of an analog-to-digital converter |
US11433177B2 (en) | 2013-05-29 | 2022-09-06 | Icu Medical, Inc. | Infusion system which utilizes one or more sensors and additional information to make an air determination regarding the infusion system |
US10342917B2 (en) | 2014-02-28 | 2019-07-09 | Icu Medical, Inc. | Infusion system and method which utilizes dual wavelength optical air-in-line detection |
US11344673B2 (en) | 2014-05-29 | 2022-05-31 | Icu Medical, Inc. | Infusion system and pump with configurable closed loop delivery rate catch-up |
US11344668B2 (en) | 2014-12-19 | 2022-05-31 | Icu Medical, Inc. | Infusion system with concurrent TPN/insulin infusion |
US10850024B2 (en) | 2015-03-02 | 2020-12-01 | Icu Medical, Inc. | Infusion system, device, and method having advanced infusion features |
CN105424268A (en) * | 2015-12-15 | 2016-03-23 | 深圳市深科医疗器械技术开发有限公司 | Pressure detection device for fluid in hose |
US11246985B2 (en) | 2016-05-13 | 2022-02-15 | Icu Medical, Inc. | Infusion pump system and method with common line auto flush |
US11324888B2 (en) | 2016-06-10 | 2022-05-10 | Icu Medical, Inc. | Acoustic flow sensor for continuous medication flow measurements and feedback control of infusion |
US11029911B2 (en) | 2017-12-27 | 2021-06-08 | Icu Medical, Inc. | Synchronized display of screen content on networked devices |
US11868161B2 (en) | 2017-12-27 | 2024-01-09 | Icu Medical, Inc. | Synchronized display of screen content on networked devices |
US10656894B2 (en) | 2017-12-27 | 2020-05-19 | Icu Medical, Inc. | Synchronized display of screen content on networked devices |
US11278671B2 (en) | 2019-12-04 | 2022-03-22 | Icu Medical, Inc. | Infusion pump with safety sequence keypad |
US11883361B2 (en) | 2020-07-21 | 2024-01-30 | Icu Medical, Inc. | Fluid transfer devices and methods of use |
US11135360B1 (en) | 2020-12-07 | 2021-10-05 | Icu Medical, Inc. | Concurrent infusion with common line auto flush |
US11972395B2 (en) | 2023-02-01 | 2024-04-30 | Icu Medical, Inc. | Systems and methods for a graphical interface including a graphical representation of medical data |
Also Published As
Publication number | Publication date |
---|---|
GB0417940D0 (en) | 2004-09-15 |
GB2417052A (en) | 2006-02-15 |
GB2417052B (en) | 2009-12-23 |
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