WO1995024229A3 - Ambulatory infusion pump - Google Patents

Ambulatory infusion pump Download PDF

Info

Publication number
WO1995024229A3
WO1995024229A3 PCT/US1995/002545 US9502545W WO9524229A3 WO 1995024229 A3 WO1995024229 A3 WO 1995024229A3 US 9502545 W US9502545 W US 9502545W WO 9524229 A3 WO9524229 A3 WO 9524229A3
Authority
WO
WIPO (PCT)
Prior art keywords
drive shaft
pump
magnet
electric motor
pump chamber
Prior art date
Application number
PCT/US1995/002545
Other languages
French (fr)
Other versions
WO1995024229B1 (en
WO1995024229A2 (en
Inventor
Robert L Anderson
Jeffrey P Castleberry
Steve W Stracener
Original Assignee
Baxter Int
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 Baxter Int filed Critical Baxter Int
Priority to JP52351495A priority Critical patent/JP3525297B2/en
Priority to DE69522057T priority patent/DE69522057T2/en
Priority to EP95913507A priority patent/EP0697898B1/en
Priority to CA002161222A priority patent/CA2161222C/en
Publication of WO1995024229A2 publication Critical patent/WO1995024229A2/en
Publication of WO1995024229A3 publication Critical patent/WO1995024229A3/en
Publication of WO1995024229B1 publication Critical patent/WO1995024229B1/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
    • A61M5/16831—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
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A61M39/281—Automatic tube cut-off devices, e.g. squeezing tube on detection of air
    • 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
    • A61M5/142—Pressure infusion, e.g. using pumps
    • 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
    • A61M2005/1401—Functional features
    • A61M2005/1404—Keep vein-open rate [KVO], i.e. low flow rate

Abstract

A medical infusion pump (10) including an improved electric motor assembly (256). The medical infusion pump (10) includes a pumping mechanism (250) and a pump chamber (132) in an operative position with respect to the pumping mechanism (250), the pumping mechanism (250), manipulating the pump chamber (132) to pump liquid through the pump chamber. An electric motor (256) having a rotatable drive shaft (316) is operably linked to the pump driving mechanism (250), and the pump driving mechanism (250) pumps a select amount of liquid through the pump chamber (132) on each rotation of the electric motor drive shaft (316). The improved electric motor assembly (256) includes a motor having a portion of a drive shaft (388) extending therefrom. A magnet (392) is attached to the extending portion of the drive shaft for rotation with the drive shaft. A flux gatherer (396) is spaced from and magnetically coupled to the magnet (392) for biasing the poles of the magnet in a select orientation relative to the flux gatherer (396) so as to stop the pump driving mechanism (250) in a select position. A magnetic position detector (400) is spaced from and magnetically coupled to the magnet (392) for emitting an electrical signal each rotation of the drive shaft (388).
PCT/US1995/002545 1994-03-07 1995-03-02 Ambulatory infusion pump WO1995024229A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP52351495A JP3525297B2 (en) 1994-03-07 1995-03-02 Portable infusion pump
DE69522057T DE69522057T2 (en) 1994-03-09 1995-03-02 AMBULANT INFUSION PUMP
EP95913507A EP0697898B1 (en) 1994-03-09 1995-03-02 Ambulatory infusion pump
CA002161222A CA2161222C (en) 1994-03-09 1995-03-02 Ambulatory infusion pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/208,343 1994-03-09
US08/208,343 US5482438A (en) 1994-03-09 1994-03-09 Magnetic detent and position detector for fluid pump motor

Publications (3)

Publication Number Publication Date
WO1995024229A2 WO1995024229A2 (en) 1995-09-14
WO1995024229A3 true WO1995024229A3 (en) 1995-10-26
WO1995024229B1 WO1995024229B1 (en) 1995-11-23

Family

ID=22774239

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/002545 WO1995024229A2 (en) 1994-03-07 1995-03-02 Ambulatory infusion pump

Country Status (6)

Country Link
US (1) US5482438A (en)
EP (1) EP0697898B1 (en)
JP (1) JP3525297B2 (en)
CA (1) CA2161222C (en)
DE (1) DE69522057T2 (en)
WO (1) WO1995024229A2 (en)

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Also Published As

Publication number Publication date
CA2161222C (en) 2001-02-13
DE69522057T2 (en) 2002-04-25
WO1995024229A2 (en) 1995-09-14
JP3525297B2 (en) 2004-05-10
EP0697898A4 (en) 1997-04-02
EP0697898A1 (en) 1996-02-28
EP0697898B1 (en) 2001-08-08
DE69522057D1 (en) 2001-09-13
US5482438A (en) 1996-01-09
JPH08509898A (en) 1996-10-22
CA2161222A1 (en) 1995-09-14

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