Title:
PUMPING AND PRESSURE DETECTION USING FLEXIBLE TUBES
Document Type and Number:
WIPO Patent Application WO1995025893
Kind Code:
A3
Abstract:
PCT No. PCT/GB95/00619 Sec. 371 Date Sep. 12, 1996 Sec. 102(e) Date Sep. 12, 1996 PCT Filed Mar. 21, 1995 PCT Pub. No. WO95/25893 PCT Pub. Date Sep. 28, 1995A peristaltic pump unit (18) has a flexible infusate line (28) which is repeatedly compressed by a flat plate like pusher (30). Transverse valve plates (32, 34), on either side of the pusher (30), operate sequentially to close the line in front of and behind the pusher. A resistive pressure sensor (50), between the two valves, provides signals to a microprocessor (46) which provides the system monitoring capabilities. Consistency in dose rate is provided by arranging for the flexible line (28) to be received in an elongate groove or channel (58) which acts to restrain sideways bulging of the line as it is being compressed by the pusher.
Inventors:
LINDSEY MICHAEL J (GB)
COULSON DAVID R (GB)
COULSON DAVID R (GB)
Application Number:
PCT/GB1995/000619
Publication Date:
October 26, 1995
Filing Date:
March 21, 1995
Export Citation:
Assignee:
GRASEBY MEDICAL LTD (GB)
LINDSEY MICHAEL JOHN (GB)
COULSON DAVID ROBERT (GB)
LINDSEY MICHAEL JOHN (GB)
COULSON DAVID ROBERT (GB)
International Classes:
A61M5/168; A61M5/36; F04B43/08; G01N7/00; (IPC1-7): F04B43/08
Foreign References:
| EP0526962A1 | 1993-02-10 | |||
| US5292306A | 1994-03-08 | |||
| EP0429866A1 | 1991-06-05 | |||
| US4277226A | 1981-07-07 | |||
| US4239464A | 1980-12-16 | |||
| US4255088A | 1981-03-10 | |||
| DE3803594A1 | 1989-08-17 |
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