Injector for medical uses

Details Injector for medical uses Injector for medical uses

1982-12-08

1984-08-14

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

128DIG1, A61M 520

Patent

active

044654758

ABSTRACT:
An injector for squeezing liquid from a medical syringe is disclosed. On a housing (10), a first holder is (11) fastened. A first end of a syringe cylinder is joined to the first holder (11). The syringe piston (15) is joined to a second holder (13). The second holder (13) is fastened to a slide (12) which is displaceable relative to the housing (10). The drive of the slide (12) is effected by way of a pipe (26) and a ball gear (27, 28) on a spindle (28). The end of the spindle (28) is connected with the slide (12) through a free-wheeling mechanism. The spindle (28) can be rotated by hand with a rotary button (30). When the free-wheeling mechanism is released, the slide (12) can be pulled linearly into a desired position. The ball gear drive mechanism (27, 28) ensures that when the motor is turned on, the slide (12) is driven at once without first requiring an engagement of a tooth system or a screwthread.

REFERENCES:
patent: 2734504 (1956-02-01), Crescas et al.
patent: 3415419 (1968-12-01), Jewitt et al.
patent: 4191187 (1980-03-01), Wright

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