Medicine injector and method of using same

Details Medicine injector and method of using same Medicine injector and method of using same

1986-03-24

1990-08-28

Smith, Leonard E.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

604151, 604153, 128DIG12, F04B 4312

Patent

active

049521241

ABSTRACT:
A medicine injector includes a finger pump which comprises an injection tube containing a liquid medicine and a plurality of fingers adapted to move in a specified sequence to compress this tube. The widths of these fingers are effectively varied by simultaneously compressing the tube with specified two or more of these fingers. This has the effect of increasing the amount of liquid which can be ejected out of the tube and to minimize the effects of a backflow.

REFERENCES:
patent: 4482347 (1984-11-01), Borsanyi
patent: 4653987 (1987-03-01), Tsuji et al.
patent: 4867744 (1989-09-01), Borsanyi
patent: 4869646 (1989-09-01), Gordon et al.

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