CA2334295A1 - Air bubble sensor - Google Patents

Air bubble sensor Download PDF

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Publication number
CA2334295A1
CA2334295A1 CA002334295A CA2334295A CA2334295A1 CA 2334295 A1 CA2334295 A1 CA 2334295A1 CA 002334295 A CA002334295 A CA 002334295A CA 2334295 A CA2334295 A CA 2334295A CA 2334295 A1 CA2334295 A1 CA 2334295A1
Authority
CA
Canada
Prior art keywords
tube
tubing
transmitter
receiver
transducers
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
CA002334295A
Other languages
French (fr)
Other versions
CA2334295C (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 CA2334295A1 publication Critical patent/CA2334295A1/en
Application granted granted Critical
Publication of CA2334295C publication Critical patent/CA2334295C/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
    • A61M5/36—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 with means for eliminating or preventing injection or infusion of air into body
    • A61M5/365—Air detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/222—Constructional or flow details for analysing fluids
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/024—Mixtures
    • G01N2291/02433—Gases in liquids, e.g. bubbles, foams
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/102—Number of transducers one emitter, one receiver
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/13—Infusion monitoring

Abstract

A system and a method for detecting the presence of air bubbles in an intravenous (IV) line supplying a medicinal liquid to a patient. An air bubble sensor includes an ultrasonic transmitter acoustically coupled to an ultrasonic receiver to detect the presence of a gas (e.g., air) in a portion of a tube comprising the IV line. The transmitter and receiver are mounted on pivoting transducers that are disposed on opposite sides of the tube. A spring biases the transducers inwardly to-ward each other so that the transmitter and receiver contact opposite sides of the tubing. This assembly automatically accommodates different sizes of tubing and tubing of a relatively wide range of stiffness. The tube is connected to a disposable pumping cassette that is engaged in a pump chassis on which the transducers are pivotally mounted. A user actuated plunger on the pump chassis is depressed to cause the transmitter and receiver to move away from the tube when the pumping cassette is removed from or inserted into the interior of the pump chassis. A controller precisely monitors the flow of medicinal liquid through the tubing to detect the size of gas bubbles and total volume of gas infused. The controller automatically compensates for minor contamination of the exterior surface of the tube, e.g., if the surface is wet with a liquid.
CA002334295A 1998-06-12 1999-06-04 Air bubble sensor Expired - Fee Related CA2334295C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/097,068 1998-06-12
US09/097,068 US6142008A (en) 1998-06-12 1998-06-12 Air bubble sensor
PCT/US1999/012642 WO1999064093A1 (en) 1998-06-12 1999-06-04 Air bubble sensor

Publications (2)

Publication Number Publication Date
CA2334295A1 true CA2334295A1 (en) 1999-12-16
CA2334295C CA2334295C (en) 2008-12-09

Family

ID=22260791

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002334295A Expired - Fee Related CA2334295C (en) 1998-06-12 1999-06-04 Air bubble sensor

Country Status (9)

Country Link
US (1) US6142008A (en)
EP (1) EP1085922B1 (en)
JP (1) JP2002517290A (en)
AT (1) ATE304381T1 (en)
AU (1) AU759455B2 (en)
CA (1) CA2334295C (en)
DE (1) DE69927263T2 (en)
ES (1) ES2249009T3 (en)
WO (1) WO1999064093A1 (en)

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Also Published As

Publication number Publication date
WO1999064093A1 (en) 1999-12-16
US6142008A (en) 2000-11-07
CA2334295C (en) 2008-12-09
AU4422499A (en) 1999-12-30
EP1085922B1 (en) 2005-09-14
EP1085922A1 (en) 2001-03-28
ATE304381T1 (en) 2005-09-15
DE69927263T2 (en) 2006-06-22
ES2249009T3 (en) 2006-03-16
DE69927263D1 (en) 2005-10-20
AU759455B2 (en) 2003-04-17
JP2002517290A (en) 2002-06-18

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