Fluid infusion pump capable of detecting erroneous tube displace

Details Fluid infusion pump capable of detecting erroneous tube displace Fluid infusion pump capable of detecting erroneous tube displace

1994-12-15

1996-06-04

Maglione, Corrine M.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 67, 128DIG12, 128DIG13, A61M 3100

Patent

active

055227996

ABSTRACT:
A pressure sensor 16 has a length C and a width D identical respectively to a length A and a width B of a fluid pumping section 11 and is provided in a portion of a cover 15 opposite to the fluid pumping section 11. The fluid pumping section 11 has a structure for pressing a tube placed in a groove 13 by means of fingers which advance and retract in a cavity 14 formed in a wall 12 of a main body. A possible erroneous placement of the tube is detected according to a change of pressure force exerted from each of the fingers, detected by the pressure sensor 16 . The pressure sensor 16, which is provided within a range in which the fingers can press the tube, can detect even a slight displacement, of the tube from the range in which the fingers can press the tube, to thereby allow detection of erroneous tube placement free of a dead zone to be achieved.

REFERENCES:
patent: 4648812 (1987-03-01), Kobayashi et al.
patent: 4671792 (1987-06-01), Borsanyi
patent: 4731057 (1988-05-01), Tanaka et al.
patent: 5018945 (1991-05-01), D'Silva
patent: 5279556 (1994-01-01), Goi et al.
patent: 5312334 (1994-05-01), Hara
patent: 5356378 (1994-11-01), Doan
patent: 5370612 (1994-12-01), Maeda et al.
patent: 5389071 (1995-02-01), Kawahara

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