Spring-powered dispensing device for medical purposes

Details Spring-powered dispensing device for medical purposes Spring-powered dispensing device for medical purposes

1998-10-09

2000-10-24

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604134, A61M 530

Patent

active

061359793

ABSTRACT:
A dispensing device, such as a needleless injector, comprising a spring, which provides an energy store, and a dispensing member movable, to effect a dispensing, under the force of the spring. A latch has a first position in which it restrains movement of the dispensing member and a second position in which it permits such movement. A trigger is operable by the user for moving the latch from the first position to the second position. A safety mechanism, preferably in the form of an appropriately shaped slot in the dispensing member, is effective before the device has been completely assembled to prevent movement of the latch to the second position.

REFERENCES:
patent: 2653602 (1953-09-01), Smooth
patent: 2680439 (1954-09-01), Sutermeister
patent: 3217712 (1965-11-01), Blumenstein
patent: 3945383 (1976-03-01), Bennett et al.
patent: 4351692 (1982-09-01), Ouellette
patent: 4902279 (1990-02-01), Schmidtz et al.
patent: 5026349 (1991-06-01), Schmitz et al.
patent: 5865795 (1999-02-01), Schiff et al.
patent: 5891086 (1999-04-01), Weston

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