US5098385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way valve for infusion devices
Assignee: Baxter International Inc
•
Filing: 1990-04-26
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Granted: 1992-03-24
•
Expires: 2010-04-26
Abstract
Abstract A disposable infuser is provided having a source of pressurized liquid contained in a liquid chamber (14). The liquid chamber (14) includes housing (20) defining an access aperture (83). A one-way duck-bill valve (80) is contained in the access aperture (83). A separate outlet conduit (84) is provided having a blunt cannula (98). When the outlet conduit (86) is attached to the housing (20), the blunt cannula (98) extends into the duck-bill valve (80) sufficiently to open the duck-bill valve (80) to establish fluid communication between the source of pressurized liquid (14) and the outlet conduit (84).
Inventors
- 👤 Derek Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:22
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
125 words
A device for infusing liquid comprising: a housing having biasing means containing a source of liquid under pressure, the housing defining an access aperture in fluid communication with the source of pressurized liquid; a one-way duck-bill valve contained in the access aperture, the one-way duck-bill valve adapted to allow liquid under pressure to enter the source of pressurized liquid while retaining the pressurized liquid in the housing; and a separable outlet conduit having a blunt cannula in fluid communication with the outlet conduit, the blunt cannula being adapted to extend sufficiently to open the one-way duck-bill valve such that upon insertion of the hollow blunt cannula into the one-way duck-bill valve, fluid communication is established between the outlet conduit and the source of pressurized liquid.
Claim 2
Independent Claim
125 words
A device for infusing liquid comprising: a housing having biasing means containing a source of liquid under pressure, the housing defining an access aperture in fluid communication with the source of pressurized liquid; a one-way duck-bill valve contained in the access aperture, the one-way duck-bill valve adapted to allow liquid under pressure to enter the source of pressurized liquid while retaining the pressurized liquid in the housing; and a separable outlet conduit having a blunt cannula in fluid communication with the outlet conduit, the blunt cannula being adapted to extend sufficiently to open the one-way duck-bill valve such that upon insertion of the hollow blunt cannula into the one-way duck-bill valve, fluid communication is established between the outlet conduit and the source of pressurized liquid.
Claim 3
Dependent Claim
32 words
The device of claim 1 wherein the duck-bill valve includes inwardly extending lips and the blunt cannula extends internally about equally in distance to the inner periphery of the inwardly extending lips.
Claim 4
Dependent Claim
23 words
The device of claim 1 wherein the housing further includes a connector member and the outlet conduit further includes a cooperating connector member.
Claim 5
Dependent Claim
13 words
The device of claim 3 wherein the connector members are cooperating luer connectors.
Claim 6
Dependent Claim
14 words
The device of claim 1 wherein the outlet conduit further includes a flow restrictor.
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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) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |