US5230706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-directional valve assembly used in needleless injection or infusion ports
Assignee: Individual
•
Filing: 1992-03-12
•
Granted: 1993-07-27
•
Expires: 2012-03-12
Abstract
Abstract A bi-directional valve assembly disposed within an infusion system to permit the administration of an infusion solution without the use of a needle, the bi-directional valve assembly is a two-way spring valve which comprises: a spring means, a valve port, and a valve plunger having a sealing means and a conduit means disposed thereabout, wherein the spring means is connected to the valve plunger in such a way as to permit the opening of the conduit means when the spring means is recoiled such that the sealing means is not in contact with the valve port and to permit the closing of the conduit means when the spring means is expanded such that the sealing means is in contact with the valve port; whereby the bi-directional valve assembly is capable of opening and closing the infusion system.
Inventors
- 👤 Irene A. Duquette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
137 words
A bi-directional valve assembly disposed within an infusion system to permit the administration of an infusion solution without the use of a needle, said bi-directional valve assembly is a two-way spring valve which comprises: a spring means, a valve port, and a valve plunger having a sealing means and a conduit means disposed thereabout, wherein said spring means is connected to said valve plunger in such a way as to permit the opening of said conduit means when said spring means is recoiled such that said sealing means is not in contact with said valve port and to permit the closing of said conduit means when said spring means is expanded such that said sealing means is in contact with said valve port; whereby said bi-directional valve assembly is capable of opening and closing said infusion system.
Claim 2
Dependent Claim
137 words
A bi-directional valve assembly disposed within an infusion system to permit the administration of an infusion solution without the use of a needle, said bi-directional valve assembly is a two-way spring valve which comprises: a spring means, a valve port, and a valve plunger having a sealing means and a conduit means disposed thereabout, wherein said spring means is connected to said valve plunger in such a way as to permit the opening of said conduit means when said spring means is recoiled such that said sealing means is not in contact with said valve port and to permit the closing of said conduit means when said spring means is expanded such that said sealing means is in contact with said valve port; whereby said bi-directional valve assembly is capable of opening and closing said infusion system.
Claim 3
Dependent Claim
32 words
The bi-directional valve assembly according to claim 1 wherein said infusion solution is either a transfusional or perfusional liquid, a nourishing solution, a vitamin solution, a medicinal solution, or an anticoagulant solution.
Claim 4
Dependent Claim
40 words
The bi-directional valve assembly according to claim 1 wherein said infusion system comprises at least one element selected from the group consisting of: intravenous tubing, valve infusion port locks, multilumen catheter or central lines, peripheral lines, and piggy-back administration systems.
Claim 5
Dependent Claim
21 words
The bi-directional valve assembly according to claim 3 wherein said valve infusion port locks are either saline locks or heparin locks.
Claim 6
Dependent Claim
26 words
The bi-directional valve assembly according to claim 1 wherein said bi-directional valve is connected to either a syringe, a leur lock tubing, or an intravenous tubing.
Claim 7
Dependent Claim
17 words
The bi-directional valve assembly according to claim 1 wherein said spring means is a stainless steel spring.
Claim 8
Dependent Claim
23 words
The bi-directional valve assembly according to claim 1 wherein said valve plunger and valve port are formed from plastic, non-allergic plastic or rubber.
Claim 9
Dependent Claim
19 words
The bi-directional valve assembly according to claim 1 wherein said sealing means is a rubber or plastic O-ring seal.
Claim 10
Dependent Claim
18 words
The bi-directional valve assembly according to claim 1 wherein said conduit means are formed on said valve plunger.
Claim 11
Dependent Claim
22 words
The bi-directional valve assembly according to claim 1 wherein said sealing means is formed as an integral part of said valve plunger.
Claim 12
Dependent Claim
13 words
The bi-directional valve assembly according to claim 1 further comprising a valve housing.
Claim 13
Dependent Claim
146 words
A bi-directional valve assembly disposed within nasogastric tubing or percutaneous endogastric tubing to enable the periodic removal of bodily fluids while preventing unimpeded discharge of said fluids, said bi-directional valve assembly is a two-way spring valve which comprises: a spring means, a valve port, and a valve plunger having a sealing means and a conduit means disposed thereabout, wherein said spring means is connected to said valve plunger in such a way as to permit the opening of said conduit means when said spring means is recoiled such that said sealing means is not in contact with said valve port and to permit the closing of said conduit means when said spring means is expanded such that said sealing means is in contact with said valve port; whereby said bi-directional valve assembly is capable of opening and closing said nasogastric tubing or said percutaneous endogastric tubing.
Claim 14
Dependent Claim
146 words
A bi-directional valve assembly disposed within nasogastric tubing or percutaneous endogastric tubing to enable the periodic removal of bodily fluids while preventing unimpeded discharge of said fluids, said bi-directional valve assembly is a two-way spring valve which comprises: a spring means, a valve port, and a valve plunger having a sealing means and a conduit means disposed thereabout, wherein said spring means is connected to said valve plunger in such a way as to permit the opening of said conduit means when said spring means is recoiled such that said sealing means is not in contact with said valve port and to permit the closing of said conduit means when said spring means is expanded such that said sealing means is in contact with said valve port; whereby said bi-directional valve assembly is capable of opening and closing said nasogastric tubing or said percutaneous endogastric tubing.
Claim 15
Dependent Claim
26 words
The bi-directional valve assembly according to claim 12 wherein said bi-directional valve is connected to either a syringe, a leur lock tubing, or an intravenous tubing.
Claim 16
Dependent Claim
17 words
The bi-directional valve assembly according to claim 12 wherein said spring means is a stainless steel spring.
Claim 17
Dependent Claim
23 words
The bi-directional valve assembly according to claim 12 wherein said valve plunger and valve port are formed from plastic, non-allergic plastic or rubber.
Claim 18
Dependent Claim
19 words
The bi-directional valve assembly according to claim 12 wherein said sealing means is a rubber or plastic O-ring seal.
Claim 19
Dependent Claim
18 words
The bi-directional valve assembly according to claim 12 wherein said conduit means are formed on said valve plunger.
Claim 20
Dependent Claim
22 words
The bi-directional valve assembly according to claim 12 wherein said sealing means is formed as an integral part of said valve plunger.
Claim 21
Dependent Claim
13 words
The bi-directional valve assembly according to claim 12 further comprising a valve housing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |