Two step type pressurized injector

Details Two step type pressurized injector Two step type pressurized injector

1976-05-07

1977-11-22

Michell, Robert W.

Surgery

Truss

Pad

222380, A61M 530

Patent

active

040591077

ABSTRACT:
A two step type pressurized injector comprising as main parts, a medicine chamber for holding an injecting liquid, a piston for pressurizing the injecting liquid, a nozzle hole for ejecting the injecting liquid, a power means for displacing said piston and a regulating means for regulating the displacement of said piston is provided. This injector gives less irritation i.e. pain to the skin of a person who is receiving the injection and less external injury to the skin. The injection is carried out under a pressure of 120 Kg/cm.sup.2 or higher to effect rapid perforation to a skin and then under a pressure of 100 Kg/cm.sup.2 or lower after the perforation.

REFERENCES:
patent: 2921582 (1960-01-01), Sadd
patent: 3768472 (1973-10-01), Hodosh et al.
patent: 3805783 (1974-04-01), Ismach

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