WO2003022328A3 - Infusion device and driving mechanism for same - Google Patents

Infusion device and driving mechanism for same Download PDF

Info

Publication number
WO2003022328A3
WO2003022328A3 PCT/US2002/028081 US0228081W WO03022328A3 WO 2003022328 A3 WO2003022328 A3 WO 2003022328A3 US 0228081 W US0228081 W US 0228081W WO 03022328 A3 WO03022328 A3 WO 03022328A3
Authority
WO
WIPO (PCT)
Prior art keywords
piston
channel
coil
forward position
same
Prior art date
Application number
PCT/US2002/028081
Other languages
French (fr)
Other versions
WO2003022328A2 (en
Inventor
John F Gray
Robert W Bosley
Original Assignee
Medtronic Minimed 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 Medtronic Minimed Inc filed Critical Medtronic Minimed Inc
Priority to AU2002324869A priority Critical patent/AU2002324869A1/en
Priority to CA2459317A priority patent/CA2459317C/en
Publication of WO2003022328A2 publication Critical patent/WO2003022328A2/en
Publication of WO2003022328A3 publication Critical patent/WO2003022328A3/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
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14276—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body specially adapted for implantation
    • 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
    • A61M5/14212—Pumping with an aspiration and an expulsion action
    • A61M5/14216—Reciprocating piston type
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/102—Disc valves
    • F04B53/1032—Spring-actuated disc valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Public Health (AREA)
  • Mechanical Engineering (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

A drive mechanism (20) for delivery of infusion medium including an electrically activated coil (38). The coil (38) surrounds a piston channel (35) extending in an axial direction. The piston channel (35) provides a passage for communication of infusion medium to an outlet chamber located at one end of the piston channel (35). A piston (44) is located within the piston channel (35) and is moveable axially within the channel (35) to a forward position, in response to movement of an armature (42) to its forward position. The armature (42) and piston (44) are moved toward a retracted position, when the coil (38) is not energized. In the retracted position of the piston (44), a piston chamber (65) is formed. As the piston (44) is moved to its forward position, the piston chamber (65) volume is reduced and pressure increased to move a valve member (66) into an open position.
PCT/US2002/028081 2001-09-07 2002-09-04 Infusion device and driving mechanism for same WO2003022328A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002324869A AU2002324869A1 (en) 2001-09-07 2002-09-04 Infusion device and driving mechanism for same
CA2459317A CA2459317C (en) 2001-09-07 2002-09-04 Infusion device and driving mechanism for same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US31788601P 2001-09-07 2001-09-07
US60/317,886 2001-09-07
US10/033,722 US6997921B2 (en) 2001-09-07 2001-12-27 Infusion device and driving mechanism for same
US10/033,722 2001-12-27

Publications (2)

Publication Number Publication Date
WO2003022328A2 WO2003022328A2 (en) 2003-03-20
WO2003022328A3 true WO2003022328A3 (en) 2004-08-05

Family

ID=26710057

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/028081 WO2003022328A2 (en) 2001-09-07 2002-09-04 Infusion device and driving mechanism for same

Country Status (4)

Country Link
US (6) US6997921B2 (en)
AU (1) AU2002324869A1 (en)
CA (1) CA2459317C (en)
WO (1) WO2003022328A2 (en)

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US20030135160A1 (en) 2003-07-17
US20050240167A1 (en) 2005-10-27
US7785293B2 (en) 2010-08-31
US8696631B2 (en) 2014-04-15
US6805693B2 (en) 2004-10-19
AU2002324869A1 (en) 2003-03-24
CA2459317A1 (en) 2003-03-20
US20030130647A1 (en) 2003-07-10
US7131967B2 (en) 2006-11-07
WO2003022328A2 (en) 2003-03-20
US6997921B2 (en) 2006-02-14
US20050245908A1 (en) 2005-11-03
US20030050624A1 (en) 2003-03-13
US20050245907A1 (en) 2005-11-03
CA2459317C (en) 2010-05-04

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