US4381591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling medical flushing valve
Assignee: Edwards Lifesciences Corp
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Filing: 1981-03-20
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Granted: 1983-05-03
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Expires: 2001-03-20
Abstract
Abstract A valve for an arterial monitoring set which continuously supplies a small flow of parenteral liquid, such as normal saline, into a patient's artery while arterial pressure is being continuously monitored. The valve has a flow restrictor providing a normally slow continuous flow rate and an elastically distortable tube which is manually squeezable to provide a fast flush rate. The valve is convenient for one hand operation. A method for assembling the valve by twisting the tube is also disclosed.
Inventors
- 👤 Larry N. Barger
- 👤 Kenneth R. McCord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:40
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/225; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49826; Y10T29/49863; Y10T29/4987
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
130 words
A method of assembling a medical flushing valve comprising the steps of: (a) sealing a restrictor inside an elastically distortable tube so the restrictor and tube combine to form a flow passage with a predetermined flow rate leaving a portion of the distortable tube extending beyond the ends of the restrictor; (b) securing one end of the distortable tube to a first hollow connector fixed within a housing, and securing the other end of the distortable tube to a second hollow connector which is movable with respect to the housing by twisting the elastically distortable tube with a torquing force and inserting the movable second hollow connector into the twisted end of the tube; and (c) compressingly urging the first and second hollow connectors into sealing engagement with the restrictor.
Claim 2
Independent Claim
130 words
A method of assembling a medical flushing valve comprising the steps of: (a) sealing a restrictor inside an elastically distortable tube so the restrictor and tube combine to form a flow passage with a predetermined flow rate leaving a portion of the distortable tube extending beyond the ends of the restrictor; (b) securing one end of the distortable tube to a first hollow connector fixed within a housing, and securing the other end of the distortable tube to a second hollow connector which is movable with respect to the housing by twisting the elastically distortable tube with a torquing force and inserting the movable second hollow connector into the twisted end of the tube; and (c) compressingly urging the first and second hollow connectors into sealing engagement with the restrictor.
Claim 3
Dependent Claim
48 words
A method as set forth in claim 1, wherein the method includes orienting the movable connector to a predetermined rotational position when attaching to the tube so that upon spiraling into sealing engagement with the restrictor a lateral port of the connector is at a particular rotational position.
Claim 4
Dependent Claim
27 words
A method as set forth in claim 2, wherein the movable connector is oriented to its particular position by orienting latch means on a bayonet type joint.
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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) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |