WO2009097292A3 - Apparatus for infusing liquid to a body - Google Patents

Apparatus for infusing liquid to a body Download PDF

Info

Publication number
WO2009097292A3
WO2009097292A3 PCT/US2009/032155 US2009032155W WO2009097292A3 WO 2009097292 A3 WO2009097292 A3 WO 2009097292A3 US 2009032155 W US2009032155 W US 2009032155W WO 2009097292 A3 WO2009097292 A3 WO 2009097292A3
Authority
WO
WIPO (PCT)
Prior art keywords
gap
predetermined thickness
piezoelectric bender
limiter
contact stop
Prior art date
Application number
PCT/US2009/032155
Other languages
French (fr)
Other versions
WO2009097292A2 (en
Inventor
Jeffrey F. Field
April A. Marano
Peter R. Rule
Kevin J. O'hara
Thomas Allen Knotts
Original Assignee
Medsolve Technologies, 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 Medsolve Technologies, Inc. filed Critical Medsolve Technologies, Inc.
Priority to EP09706453A priority Critical patent/EP2247336A4/en
Priority to CA2751061A priority patent/CA2751061A1/en
Publication of WO2009097292A2 publication Critical patent/WO2009097292A2/en
Publication of WO2009097292A3 publication Critical patent/WO2009097292A3/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
    • A61M5/14212—Pumping with an aspiration and an expulsion action
    • A61M5/14224—Diaphragm type
    • 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
    • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2041—Beam type
    • H10N30/2042—Cantilevers, i.e. having one fixed end
    • 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
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0272—Electro-active or magneto-active materials
    • A61M2205/0294—Piezoelectric materials

Landscapes

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

Abstract

An infusion device having a housing with a reusable control portion and an expendable reservoir portion includes a precise drive for an infusion pump The drive includes a piezoelectric bender assembly, a limiter and at least one contact stop The piezoelectric bender assembly includes a cantilevered piezoelectric bender having an member of predetermined thickness fixed to move with the second end A limiter of dimensionally stable material including a gap and at least a first mounting hole extending to the gap The member of predetermined thickness extends into the gap A first contact stop is positioned in the gap to define a critical gap distance limiting movement of the member of predetermined thickness in the gap.
PCT/US2009/032155 2008-01-28 2009-01-27 Apparatus for infusing liquid to a body WO2009097292A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09706453A EP2247336A4 (en) 2008-01-28 2009-01-27 Apparatus for infusing liquid to a body
CA2751061A CA2751061A1 (en) 2008-01-28 2009-01-27 Apparatus for infusing liquid to a body

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/021,164 US8708961B2 (en) 2008-01-28 2008-01-28 Apparatus for infusing liquid to a body
US12/021,164 2008-01-28

Publications (2)

Publication Number Publication Date
WO2009097292A2 WO2009097292A2 (en) 2009-08-06
WO2009097292A3 true WO2009097292A3 (en) 2009-12-30

Family

ID=40913478

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/032155 WO2009097292A2 (en) 2008-01-28 2009-01-27 Apparatus for infusing liquid to a body

Country Status (4)

Country Link
US (1) US8708961B2 (en)
EP (1) EP2247336A4 (en)
CA (1) CA2751061A1 (en)
WO (1) WO2009097292A2 (en)

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US8708961B2 (en) 2014-04-29
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US20100331826A1 (en) 2010-12-30
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