Retractable syringe applicator

Details Retractable syringe applicator Retractable syringe applicator

1993-12-06

1994-07-19

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604195, 604198, A61M 520

Patent

active

053304306

ABSTRACT:
A combination retractable syringe and injector enclosure are disclosed. A hypodermic syringe is placed into the injector enclosure and attached to a spring-loaded plunger. The plunger terminates in a tubular case that houses a coil spring and extends out from one end of the injector enclosure. An empty syringe may be filled by loading the injector with the empty syringe, engaging the plunger with the empty syringe, positioning a canula or needle of the syringe for collecting a fluid, and then withdrawing the case and plunger from the end of the injector enclosure. This causes the syringe to pull fluid from the canula and into the body of the syringe. In an alternate use, a fluid in a full syringe is dispensed by loading the injector enclosure with the full syringe, engaging the plunger with the full syringe, positioning the canula for injection, and then pushing the case into the injector enclosure. Upon the complete dispensing of the fluid within the syringe, two disengaging means within the injector enclosure come into contact with two corresponding locking means within the enclosure, thereby freeing the spring within the case to retract the syringe completely into the injector enclosure. As such, the canula is automatically withdrawn from the injection site and retained safely within the injector enclosure. The entire device is then safely discarded.

REFERENCES:
patent: 3880163 (1975-04-01), Ritterskamp
patent: 4507117 (1985-03-01), Vining et al.
patent: 4631057 (1986-04-01), Mitchell
patent: 4642099 (1987-02-01), Phillips et al.
patent: 4787891 (1988-11-01), Levin et al.
patent: 4820275 (1989-04-01), Haber et al.
patent: 4931040 (1990-06-01), Haber
patent: 5017187 (1991-05-01), Sullivan

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