Self-injecting hypodermic syringe device

Details Self-injecting hypodermic syringe device Self-injecting hypodermic syringe device

1978-10-06

1980-04-22

Yasko, John D.

Surgery

Respiratory method or device

Ozone or ion generation

128218F, A61M 500

Patent

active

041989759

ABSTRACT:
A hypodermic syringe which is self-injected has a substantially T-shaped frame of which the stem depends from the top portion to comprise a handle and a syringe carriage slides along said top portion initially by means of a tension spring. A sear holds the carriage retracted against the spring but, when released, the spring shoots the syringe and carriage forwardly a limited distance adequate to inject the needle of the syringe into flesh. A finger-operated trigger, of which two embodiments are provided, when pushed inwardly into the handle actuates a sear release during the short initial movement of the trigger and continued movement thereof moves a slide forwardly along the top of the frame against the outer end of the syringe plunger by means of motion-multiplying means to provide greater movement of said slide for a much lesser movement of said trigger.

REFERENCES:
patent: 2816546 (1957-12-01), Luhmann
patent: 2892457 (1959-06-01), Sturtz
patent: 2942603 (1960-06-01), Geyer
patent: 3064650 (1962-11-01), Lewis
patent: 4067334 (1978-01-01), Haller
patent: 4154239 (1979-05-01), Turley

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