Mixing vial

Details Mixing vial Mixing vial

Filed on

1993-01-13

Date issued

1994-10-04

Examiner

Yasko, John D.

Patent Class

Surgery

SubClass

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

SubSubClass

Treating material introduced into or removed from body...

Other Related Categories

604415, 604416, 206221, 215DIG8, A61M 500

Type

Patent

Status

active

Patent number

053521960

Description

ABSTRACT:
A vial (2, 202) has first and second chambers (56, 232; 54, 234) initially separated by a rupturable barrier (20, 212). The first chamber is a variable volume chamber defined by a cylinder (18, 208), the rupturable barrier at the second end (19, 214) of the cylinder and a piston (14, 228). The second chamber is created by a telescoping container (22, 226) mounted to a second end of the cylinder. The chambers are telescopically collapsed causing fluid pressure in the second chamber to rupture the barrier so the components mix in the first chamber. The piston is driven through the cylinder from pre-mix to post-mix positions by the liquid from the second chamber. This dislodges a safety shield (30, 226) at the first end of the cylinder to expose the piston. The mixed contents of the first, variable volume chamber are removed by inserting a needle cannula through the now exposed piston; aspiration of the mixed contents take place without the introduction of air into the first chamber since the piston moves back down the cylinder as the contents are removed. Structure (236; 242; 248, 250) can be used to prevent the inadvertent activation of the vial (202).

REFERENCES:
patent: 2665690 (1954-01-01), Lockhart
patent: 3314563 (1967-04-01), Mounier
patent: 3467097 (1969-09-01), Ogle
patent: 3521745 (1970-07-01), Schwartzman
patent: 3779371 (1973-12-01), Rovinski
patent: 4031892 (1977-06-01), Hurschman
patent: 4648532 (1987-03-01), Green
patent: 4779722 (1988-10-01), Hall
patent: 4886495 (1989-12-01), Reynolds
patent: 4927013 (1990-05-01), Van Brunt et al.
Various photocopies of a cartridge made by Preject.
Various photocopies of a cartridge made by Lyo-Ject.
Mix-O-Vial literature by UpJohn.

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