US4543094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syringe and accessory
Assignee: Individual
•
Filing: 1984-03-19
•
Granted: 1985-09-24
•
Expires: 2004-03-19
Abstract
Abstract A syringe has a chamber isolated from an open ended barrel. A valve provides fluid communication between the chamber and barrel and an outlet. In an alternative form the chamber is within a structurally independent cell that may be mounted to a conventional syringe in piggyback fashion.
Inventors
- 👤 John K. Barnwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:21
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/3129; A61M5/3134; A61M2005/3128
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
127 words
A syringe comprising a tubular housing having a barrel open at one end in which a plunger is slidably positioned and a storage chamber separated from said barrel by a partition; a conduit extending through said partition and said storage chamber to a needle mount orifice and having an outlet opening into said chamber; and three-way valve means associated with said conduit for alternatively providing fluid communication through said conduit between said needle mount orifice and said storage chamber for loading said storage chamber with a medication, for fluid communication between said storage chamber and said barrel for drawing medication from said chamber into said barrel upon actuation of said plunger, and for providing fluid communication between said barrel and said needle mount orifice for medication ejection.
Claim 2
Dependent Claim
127 words
A syringe comprising a tubular housing having a barrel open at one end in which a plunger is slidably positioned and a storage chamber separated from said barrel by a partition; a conduit extending through said partition and said storage chamber to a needle mount orifice and having an outlet opening into said chamber; and three-way valve means associated with said conduit for alternatively providing fluid communication through said conduit between said needle mount orifice and said storage chamber for loading said storage chamber with a medication, for fluid communication between said storage chamber and said barrel for drawing medication from said chamber into said barrel upon actuation of said plunger, and for providing fluid communication between said barrel and said needle mount orifice for medication ejection.
Claim 3
Dependent Claim
17 words
The syringe of claim 1 wherein each alternative fluid provided by said three-way valve means is exclusive.
Claim 4
Dependent Claim
14 words
The syringe of claim 1 wherein said three-way valve means comprises a T-shaped conduit.
Claim 5
Dependent Claim
96 words
Apparatus for separately storing, mixing and ejecting a medication comprising: a syringe having a tubular coupling at one end and plunger means operatively extending out of the other end; and a cell having a chamber adapted to house a medication, a tubular coupling adapted to be coupled with said syringe coupling, another tubular coupling adapted to be coupled with a needle, a conduit mounted within said chamber extending between said cell couplings and having an opening into said chamber, and valve means for selectively controlling the flow of medication between said cell couplings and said opening.
Claim 6
Dependent Claim
96 words
Apparatus for separately storing, mixing and ejecting a medication comprising: a syringe having a tubular coupling at one end and plunger means operatively extending out of the other end; and a cell having a chamber adapted to house a medication, a tubular coupling adapted to be coupled with said syringe coupling, another tubular coupling adapted to be coupled with a needle, a conduit mounted within said chamber extending between said cell couplings and having an opening into said chamber, and valve means for selectively controlling the flow of medication between said cell couplings and said opening.
Claim 7
Dependent Claim
38 words
The apparatus of claim 4 further comprising a second cell having a chamber adapted to house another medication and having the same structure as said cell whereby the second cell may be mounted in tandem to said cell.
Claim 8
Dependent Claim
13 words
The apparatus of claim 4 wherein said valve comprises a rotatable T-shaped conduit.
Claim 9
Dependent Claim
121 words
Apparatus for storing and supplying medication to a syringe when mounted thereto and with said apparatus comprising a cell having a conduit extending therethrough between two externally accessible tubular couplings and having an orifice opening into the cell interior, and valve means for controlling the flow of medication through said conduit, whereby the cell may be filled with medication with the valve means establishing communication between one of the couplings and the orifice through the conduit, the cell contents drawn into the syringe with the valve means etablishing communication between the orifice and the coupling to which the syringe is coupled, and medication expelled to ambiance through the cell conduit with the valve means establishing communication between the two cell couplings.
Claim 10
Dependent Claim
121 words
Apparatus for storing and supplying medication to a syringe when mounted thereto and with said apparatus comprising a cell having a conduit extending therethrough between two externally accessible tubular couplings and having an orifice opening into the cell interior, and valve means for controlling the flow of medication through said conduit, whereby the cell may be filled with medication with the valve means establishing communication between one of the couplings and the orifice through the conduit, the cell contents drawn into the syringe with the valve means etablishing communication between the orifice and the coupling to which the syringe is coupled, and medication expelled to ambiance through the cell conduit with the valve means establishing communication between the two cell couplings.
Claim 11
Dependent Claim
14 words
The apparatus of claim 7 wherein said valve means comprises a rotatably three-way valve.
Claim 12
Dependent Claim
14 words
The apparatus of claim 8 wherein said valve means comprises a rotatable T-shaped conduit.
Claim 13
Dependent Claim
57 words
The apparatus of claim 9 wherein said T-shaped conduit is mounted to a cylindrical arm that extends through a tubular member mounted within said cell to the exterior of said cell for manual accessibility, and wherein said tubular member has three holes angularly spaced for a plurality of alignments with conduit members of said rotatable T-shaped conduit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |