Syringe cartridge and method

Details Syringe cartridge and method Syringe cartridge and method

1982-11-22

1984-08-14

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604187, 128763, A61M 100

Patent

active

044654723

ABSTRACT:
Disclosed is a method for filling a cartridge which can be subsequently capped and closed. This is done by filling to a discrete level and then applying a closure. A displacement dome is provided at the lower portion of the syringe cartridge closure to first displace a predetermined amount of air or gas and then to displace a minor amount of fluid upon closure to seal the cartridge, and insure zero head space. The entirety of the process of filling is done in a vented environment, and the closure applied at ambient. The invention also provides an apparatus which includes a syringe cartridge having its open lower portion closed by a plunger piston. The upper portion is closed by a syringe cartridge closure having a leur tip cap. Means are optionally provided interiorly of the tip cap to retain a hollow needle, which is held in position by a leur tip, the latter being vented and provided with a seal for the needle. The piston plunger at the lower portion of the cartridge can be advanced, desirably by a second plunger, to empty the contents. Upon resealing, the leur tip cap is applied over the leur tip after a bead is formed on the tip. The tip cap then penetrates the leur tip, or optionally the interior of the hollow needle thus completely reclosing the cartridge and sealing the same for storage until intended for further use.

REFERENCES:
patent: 1707880 (1929-04-01), Sheets
patent: 4044758 (1977-08-01), Patel
patent: 4057050 (1977-11-01), Sarstedt
patent: 4289648 (1981-09-01), Hoskins et al.
patent: 4291701 (1981-09-01), Bowman

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