Title:
【発明の名称】無菌シールを備える容積式ポンプ
Document Type and Number:
Japanese Patent JP2002512667
Kind Code:
A
Abstract:
A volumetric pump for administering intravenous fluids to a patient includes a first housing having an elongate cavity therein with an open and a closed end. A resilient sheet of material having a centrally-located aperture covers the open end, and a pump shaft is slidably disposed through the aperture to form a sphincter seal therebetween. An inlet conduit leading from a fluid source (an IV bag) passes through the housing into the cavity near the open end thereof, and an outlet conduit leading to a fluid sink (the patient) passes through the housing from the cavity near the closed end thereof. A drive shaft is attached to the pump shaft to drive it back and forth in reciprocating motion inwardly and outwardly of the cavity to produce, respectively, a positive pressure forcing fluid out of the outlet conduit to the fluid sink, and a negative pressure forcing fluid from the fluid source through the inlet conduit. A second housing encloses the first housing and pump shaft, and includes a seal formed about the drive shaft to seal the inside of the second housing from the outside.
Inventors:
Jacobsen, Stephen, Sea
Divis, clark, sea
Divis, clark, sea
Application Number:
JP55064398A
Publication Date:
April 23, 2002
Filing Date:
May 21, 1998
Export Citation:
Assignee:
Circus, Inc.
International Classes:
A61M5/142; F04B3/00; F04B7/00; F04B17/04; F04B9/02; F04B9/04; F04B17/00; F04B17/03; F04B49/12; F04B53/02; F04B53/16; F16J15/32; F16K41/12; H01F7/02; (IPC1-7): F04B53/16; A61M1/10; F16J15/32
Attorney, Agent or Firm:
Akira Asamura (3 outside)