Survival Technology, Inc.

Sheldon Kaplan

Stanley J Sarnoff

N Lawrence Dalling

Gerlof Homan

George B Calkins

Edward M Curley

An additive adapter for use in conjunction with an injector wherein the injector includes a cylindrical body having a rearward open end and a forward end necked inwardly to form an annular lip. The forward end having a central opening of reduced diameter which is closed off by a sealing diaphragm. A plunger is sealingly and slidably fitted in the rearward portion of the body to form a medicament chamber between the sealing means and the plunger. A needle hub is affixed to the annular lip and carries a needle which is in fluid communication with the medicament chamber upon the opening of the sealing diaphragm. The additive adapter comprises a main body portion including a cylindrical skirt portion extending from the rearward end of the cylindrical sleeve. The skirt is sized to snugly engage and fit over the forward portion of the injector's cylindrical body. A cylindrical shield having a diameter larger than the cylindrical sleeve extends from the forward end thereof. A cap fits on and closes off the forward open end of the shield and a retaining assembly extends inwardly from the main body portion to engage the annular lip of the necked end of the injector body to retain the adapter in assembled condition on the aforesaid body.

Additive adapter

A hypodermic injection device comprising a cartridge holder having a cylindrical body open at one end and closed at the other end, the closed end being provided with an aperture, a cartridge with the holder, the cartridge including an ampoule having a cylindrical sleeve open at one end and having a necked portion at the other end to receive a hub mounting a cannula, the cannula facing the apertured end of the cylindrical body, a piston slidably carried within the sleeve adjacent the open end thereof to define a medicament chamber between the piston and cannula, fluid medicament in the medicament chamber, the piston having a concave face on the side forming one end of the medicament chamber, a spring power assembly adjacent the open end of the ampoule sleeve for moving the cartridge forward and for injecting the fluid medicament, spacer means positionable between the outer face of the piston and the adjacent spring power means to vary the position of the piston within the ampoule sleeve and thereby control the volume of the medicament chamber and the medicament carried therein, a safety assembly for controlling actuation of the spring power assembly, and a resilient sheath covering the cannula to maintain the cannula in sterile condition.

Growing community of inventors

Potomac, MD, United States of America

Sheldon Kaplan