CA2334477A1 - Occlusion detection system - Google Patents

Occlusion detection system Download PDF

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Publication number
CA2334477A1
CA2334477A1 CA002334477A CA2334477A CA2334477A1 CA 2334477 A1 CA2334477 A1 CA 2334477A1 CA 002334477 A CA002334477 A CA 002334477A CA 2334477 A CA2334477 A CA 2334477A CA 2334477 A1 CA2334477 A1 CA 2334477A1
Authority
CA
Canada
Prior art keywords
pressure
leaf spring
pumping cassette
occlusion
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002334477A
Other languages
French (fr)
Other versions
CA2334477C (en
Inventor
Martin A. Cole
Michael W. Lawless
Christopher D. Lynch
Frank S. C. Mo
Peter A. Soberon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hospira Inc
Original Assignee
Abbott Laboratories
Martin A. Cole
Michael W. Lawless
Christopher D. Lynch
Frank S. C. Mo
Peter A. Soberon
Hospira, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Abbott Laboratories, Martin A. Cole, Michael W. Lawless, Christopher D. Lynch, Frank S. C. Mo, Peter A. Soberon, Hospira, Inc. filed Critical Abbott Laboratories
Publication of CA2334477A1 publication Critical patent/CA2334477A1/en
Application granted granted Critical
Publication of CA2334477C publication Critical patent/CA2334477C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • A61M5/16854—Monitoring, detecting, signalling or eliminating infusion flow anomalies by monitoring line pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • A61M2005/16863—Occlusion detection
    • A61M2005/16868—Downstream occlusion sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • A61M2005/16863—Occlusion detection
    • A61M2005/16872—Upstream occlusion sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/12—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit

Abstract

A system and a method for detecting the presence of an occlusion in an intravenous (IV) line supplying a medicinal liquid to a patient.
Two pressure occlusion sensors are employed to produce a value for the proximal and distal pressures within an IV pumping cassette that is disposed in the fluid path of the IV line. Each pressure occlusion sensor includes a strain gauge connected to a leaf spring that is fixed at one end within a pump chassis and a rod that is disposed transverse to the leaf spring. Each rod has one end that responds to the force of a portion of an elastomeric membrane inside the pumping cassette and another end that contacts a free end of the leaf spring. When a leaf spring is flexed by the movement of a rod, the strain gauge mounted on the leaf spring produces a differential voltage that corresponds to a fluid pressure within the pumping cassette. The distal pressure occlusion sensor automatically opens a flow stop on the pumping cassette when the pumping cassette is inserted into the pump chassis. The outputs from the distal and proximal pressure sensors are sampled at least once per second to ensure that maximum pressure values are not exceeded and that a pressure sensor failure is immediately detected.
CA002334477A 1998-06-12 1999-06-11 Occlusion detection system Expired - Fee Related CA2334477C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/097,062 US5989222A (en) 1998-06-12 1998-06-12 Pressure (occlusion) sensor
US09/097,062 1998-06-12
PCT/US1999/013016 WO1999064091A2 (en) 1998-06-12 1999-06-11 Occlusion detection system

Publications (2)

Publication Number Publication Date
CA2334477A1 true CA2334477A1 (en) 1999-12-16
CA2334477C CA2334477C (en) 2008-01-08

Family

ID=22260725

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002334477A Expired - Fee Related CA2334477C (en) 1998-06-12 1999-06-11 Occlusion detection system

Country Status (9)

Country Link
US (1) US5989222A (en)
EP (1) EP1083950B1 (en)
JP (1) JP4141639B2 (en)
AT (1) ATE306956T1 (en)
AU (1) AU765163B2 (en)
CA (1) CA2334477C (en)
DE (1) DE69927811T2 (en)
ES (1) ES2251203T3 (en)
WO (1) WO1999064091A2 (en)

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AU2014274146B2 (en) 2013-05-29 2019-01-24 Icu Medical, Inc. Infusion system which utilizes one or more sensors and additional information to make an air determination regarding the infusion system
US20150133861A1 (en) 2013-11-11 2015-05-14 Kevin P. McLennan Thermal management system and method for medical devices
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JP6636442B2 (en) 2014-02-28 2020-01-29 アイシーユー・メディカル・インコーポレーテッド Infusion systems and methods utilizing dual wavelength optical in-pipe air detection
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US10227971B2 (en) * 2014-08-12 2019-03-12 Kpr U.S., Llc Downstream flow detection system for flow control apparatus
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Also Published As

Publication number Publication date
CA2334477C (en) 2008-01-08
WO1999064091A2 (en) 1999-12-16
AU765163B2 (en) 2003-09-11
JP4141639B2 (en) 2008-08-27
DE69927811D1 (en) 2005-11-24
EP1083950A2 (en) 2001-03-21
DE69927811T2 (en) 2006-07-20
AU4821299A (en) 1999-12-30
WO1999064091A3 (en) 2000-03-02
JP2002517288A (en) 2002-06-18
ATE306956T1 (en) 2005-11-15
EP1083950B1 (en) 2005-10-19
ES2251203T3 (en) 2006-04-16
US5989222A (en) 1999-11-23

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150611