WO2005118051A3 - Flow control and gas detection and gas removal in an intravenous fluid delivery system - Google Patents

Flow control and gas detection and gas removal in an intravenous fluid delivery system Download PDF

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Publication number
WO2005118051A3
WO2005118051A3 PCT/US2005/018659 US2005018659W WO2005118051A3 WO 2005118051 A3 WO2005118051 A3 WO 2005118051A3 US 2005018659 W US2005018659 W US 2005018659W WO 2005118051 A3 WO2005118051 A3 WO 2005118051A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas
intravenous
flow control
patient
fluid
Prior art date
Application number
PCT/US2005/018659
Other languages
French (fr)
Other versions
WO2005118051A2 (en
Inventor
David E Cassidy
Eric May
Richard Bucchianeri
Original Assignee
Enginivity Llc
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 Enginivity Llc filed Critical Enginivity Llc
Priority to EP05753733.4A priority Critical patent/EP1750793B1/en
Priority to AU2005249984A priority patent/AU2005249984B2/en
Priority to CA2567860A priority patent/CA2567860C/en
Priority to JP2007515371A priority patent/JP4961340B2/en
Priority to NZ551709A priority patent/NZ551709A/en
Publication of WO2005118051A2 publication Critical patent/WO2005118051A2/en
Publication of WO2005118051A3 publication Critical patent/WO2005118051A3/en
Priority to AU2011200140A priority patent/AU2011200140B2/en
Priority to AU2011200139A priority patent/AU2011200139B2/en

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
    • A61M5/16804—Flow controllers
    • A61M5/16813—Flow controllers by controlling the degree of opening of the flow line
    • 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
    • A61M5/1411—Drip chambers
    • 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
    • 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
    • A61M5/38—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 using hydrophilic or hydrophobic filters
    • A61M5/385—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 using hydrophilic or hydrophobic filters using hydrophobic filters
    • 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
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3317—Electromagnetic, inductive or dielectric measuring means
    • 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
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
    • A61M2205/3386—Low level detectors
    • 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
    • A61M5/40—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 using low-level float-valve to cut off media flow from reservoir
    • 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
    • A61M5/44—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 having means for cooling or heating the devices or media

Abstract

An intravenous (IV) flow control system provides closed loop control to maintain a desired flow rate. The actual flow rate is determined by two techniques, a geometrically based technique that uses geometric parameters of the IV system, and a thermally based technique that uses the power input to an IV fluid warmer and the temperature of the IV fluid entering and exiting the warmer. A gas bubble detection system detects the presence of liquid rather than gas in intravenous tubing preventing false alarms due the micro bubbles or small air gaps between the sensor and the tubing. An active gas removal system removes air or gas bubbles from an intravenous fluid prior to infusion into the patient. The system detects the level of liquid in a drip chamber and occludes a downstream valve to the patient, thereby increasing pressure in the drip chamber sufficient to open a vent valve and release gas therein.
PCT/US2005/018659 2004-05-28 2005-05-27 Flow control and gas detection and gas removal in an intravenous fluid delivery system WO2005118051A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP05753733.4A EP1750793B1 (en) 2004-05-28 2005-05-27 Flow control and gas detection and gas removal in an intravenous fluid delivery system
AU2005249984A AU2005249984B2 (en) 2004-05-28 2005-05-27 Flow control and gas detection and gas removal in an intravenous fluid delivery system
CA2567860A CA2567860C (en) 2004-05-28 2005-05-27 Flow control and gas detection and gas removal in an intravenous fluid delivery system
JP2007515371A JP4961340B2 (en) 2004-05-28 2005-05-27 System for controlling the flow of venous fluid in the venous system
NZ551709A NZ551709A (en) 2004-05-28 2005-05-27 Flow control and gas detection and gas removal in an intravenous fluid delivery system
AU2011200140A AU2011200140B2 (en) 2004-05-28 2011-01-13 Flow control and gas detection and gas removal in an intravenous fluid delivery system
AU2011200139A AU2011200139B2 (en) 2004-05-28 2011-01-13 Flow control and gas detection and gas removal in an intravenous fluid delivery system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US57524604P 2004-05-28 2004-05-28
US60/575,246 2004-05-28
US57625804P 2004-06-02 2004-06-02
US60/576,258 2004-06-02

Publications (2)

Publication Number Publication Date
WO2005118051A2 WO2005118051A2 (en) 2005-12-15
WO2005118051A3 true WO2005118051A3 (en) 2006-04-27

Family

ID=35463371

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/018659 WO2005118051A2 (en) 2004-05-28 2005-05-27 Flow control and gas detection and gas removal in an intravenous fluid delivery system

Country Status (7)

Country Link
US (3) US7547295B2 (en)
EP (1) EP1750793B1 (en)
JP (1) JP4961340B2 (en)
AU (3) AU2005249984B2 (en)
CA (2) CA2822175C (en)
NZ (1) NZ551709A (en)
WO (1) WO2005118051A2 (en)

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WO2005118051A2 (en) 2005-12-15
US20060025725A1 (en) 2006-02-02
US20060020255A1 (en) 2006-01-26
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US20060021419A1 (en) 2006-02-02
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CA2822175C (en) 2016-10-18
EP1750793A2 (en) 2007-02-14
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CA2567860C (en) 2013-10-15
EP1750793B1 (en) 2020-09-16

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