Title:
PUMP FOR PARENTERAL ADMINISTRATION OF FLUID TO PATIENT
Document Type and Number:
Japanese Patent JPS61257661
Kind Code:
A
Abstract:
An infusion pump incorporates a cassette (12) formed by bonding of two substantially flat sheets. The fluid to be infused to the patient comes into contact only with the cassette (12). The sheets define a pumping chamber (38) therebetween. The infusion pump is provided with a pumping member having a hub (60) and a plurality of petal-shaped sections (62) extending radially outward therefrom and pivoted relative thereto. A stepping motor (80) can be operated to move the pumping member against the second flexible sheet to decrease the volume of the pumping chamber (38) and pump fluid to the patient. A load cell (82) monitors the force exerted by the stepping motor (80) on the hub (60). An outlet restriction valve (58) is electronically controlled by a second stepping motor (102) in response to the pressure sensed by the load cell (82) to control pumping to a predetermined pressure. The pressure can be selectively varied which permits the use of a low pressure at low flow rates to decrease the time necessary to detect an occlusion in the output line.
Inventors:
MAATEIN ESU ABATSUTO
Application Number:
JP6739086A
Publication Date:
November 15, 1986
Filing Date:
March 27, 1986
Export Citation:
Assignee:
KUUESUTO MEDICAL INC
International Classes:
A61M1/00; A61M5/142; (IPC1-7): A61M5/14
Attorney, Agent or Firm:
Nobuhiko Nakajima (1 outside)
Previous Patent: BLOOD PURIFYING APPARATUS FOR EXTERNAL RECIRCULATION
Next Patent: RESPIRATION PROTECTIVE APPARATUS FOR REFUGE
Next Patent: RESPIRATION PROTECTIVE APPARATUS FOR REFUGE