Injector head for medical use

Details Injector head for medical use Injector head for medical use

1998-03-05

1999-10-19

Hirsch, Paul J.

Surgery

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

Treating material introduced into or removed from body...

128DIG1, 604154, A61M 5142, A61M 520

Patent

active

059680156

ABSTRACT:
An injector head for medical use is provided with a position plate serving as both the position plate and a nut, placed at a rear end portion of a plunger, as well as a screw axis engaging with the position plate. A mechanical stopper which can slide only in a direction of an axis of the plunger is provided to the plunger. A female thread is formed on the surface of the mechanical stopper. A main body portion is provided which accommodates the mechanical stopper, the plunger, and the position plate and has a male thread formed on its inner surface and screwed together with the female thread. By utilizing this structure, an injector head for medical use can be provided which is scaled down and simplified while keeping its mechanical safety mechanism.

REFERENCES:
patent: 3720211 (1973-03-01), Kyrias
patent: 4108177 (1978-08-01), Pistor
patent: 4191187 (1980-03-01), Wright
patent: 4407659 (1983-10-01), Adam
patent: 5106375 (1992-04-01), Conero
patent: 5322511 (1994-06-01), Armbruster et al.
patent: 5505697 (1996-04-01), McKinnon, Jr. et al.
patent: 5505709 (1996-04-01), Funderburk et al.
patent: 5647853 (1997-07-01), Feldman et al.
patent: 5722956 (1998-03-01), Sims et al.

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