Vial for use as syringe accessory

Details Vial for use as syringe accessory Vial for use as syringe accessory

1998-11-03

2000-06-27

Polutta, Mark O.

Surgery

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

Treating material introduced into or removed from body...

604 90, 206221, A61M 3700

Patent

active

06080131&

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

This invention relates to a vial for holding drugs, and mixtures which can optionally serve as a syringe accessory.


BACKGROUND TO THE INVENTION

It is known to use a syringe barrel as a prepackaged container for drugs. The barrels in these cases are of the type which are moved relative to a piston which has a fluid pathway through it. The barrels normally have one opening which has a removable seal, and after unsealing, the open end is located over a piston head for use.


OBJECT OF THE INVENTION

It is an object of this invention to provide a vial of the type described above.


SUMMARY OF THE INVENTION

In accordance with this invention there is provided a vial comprising a tubular syringe barrel closed at one end and open at the other, a stopper in the open barrel end formed by a piston head of a syringe, and valve means in the barrel between the stopper and the closed barrel end, the valve means being normally closed and actuatable to an open condition by movement of the stopper into the barrel, and the valve means being slidable with the piston head to the closed barrel end.
Preferably, the valve means is actuatable by hydraulic pressure from a liquid being operated on by the stopper when pressed into the barrel.
There is provided for the valve means to have a body which is slidable within a sealing surround, with the body having openings in it and being slidable from a closed position in which the openings are sealed by the sealing surround, to an open position where the openings in the body move passed the sealing surround.
Preferably, the body is a blind ended tube with an outwardly extending annular skirt located at the open tube end, the tube having radial openings between the skirt and the blind end, and an annular seal around the blind end.
The seal may alternatively extend axially from the blind end, spaced from and around the tube, to seal around the skirt.


BRIEF DESCRIPTION OF THE DRAWING

Preferred embodiments of the invention are described below by way of example only, and with reference to the accompanying drawings, in which:
FIGS. 1 to 3 are cross-sectional side views of a first embodiment of the invention in stages of use; and,
FIGS. 4 to 5 are cross-sectional side views of a second embodiment of the invention in stages of use.


DETAILED DESCRIPTION OF THE DRAWINGS WITH REFERENCE TO THE DRAWING

Referring to FIGS. 1 to 3, a syringe barrel (1) is tubular with an open end (2) and a closed end (3). The barrel has a piston head (4) located in the open end, operating as a stopper. The piston head (4) has a blind passageway (5) formed therein running from the interior piston end where it is open, to the blind end facing out of the barrel, at the external end of the piston. As will be appreciated by those who are skilled in the art, this piston is pressed in use into the sharp end of a needle passageway as part of a syringe. The blind end of the piston passageway is pierced to create a path for liquid to be discharged.
A valve means (10) is located in the barrel between the piston head (4) and the closed end (3). The valve means divides the barrel interior into a chamber (18) nearest the piston head, and a chamber (19) nearest the closed end (3). The chamber (18) is filled with a liquid component, and the chamber (19) is filled with a granular or powder component in a form that is at least partially compressible, or which does not completely fill the chamber (19). Normally, the liquid is a sterile solution which must be mixed with a powdered drug, normally an antibiotic.
The valve means (10) has a body (11) in the form of a short blind ended tube, having an open end (12) leading to the blind end (13). The wall (14) of the tube is spaced away from the barrel walls, and at the open end a radially outwardly extending skirt (15) provides a sliding fit for the valve means body within the barrel interior. At the blind end (13) is located sealing means (16) in the form of an O-ring. The O-ring locates in a sealing manner around the blind end (13). Radial openings (17) are

REFERENCES:
patent: 2567001 (1951-09-01), Watson
patent: 2604095 (1952-07-01), Brody
patent: 5290228 (1994-03-01), Uemura et al.
patent: 5335773 (1994-08-01), Haber et al.
patent: 5599312 (1997-02-01), Higashikawa
patent: 5685846 (1997-11-01), Michaels, Jr.

Affiliated with

Also associated with

Rating

Vial for use as syringe accessory does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vial for use as syringe accessory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vial for use as syringe accessory will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1780219