US5443453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stop-cock valve
Assignee: Covidien AG
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Filing: 1994-04-21
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Granted: 1995-08-22
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Expires: 2014-04-21
Abstract
Abstract The present invention relates to a stop-cock valve useable in conjunction with a fluid delivery set for delivering fluids such as intravenous fluids or enteral fluids from one or more containers to a patient. The valve includes a shear-away interference member which holds the valve in a closed position prior to use in order to prevent accidental premature free flow of fluid therethrough. The valve also includes a venting passage for allowing access of sterilization gas into all fluid flow passages of the valve even when the valve stem is rotated to a closed position.
Inventors
- 👤 Clarence L. Walker
- 👤 Frederick F. Schweitzer, Jr.
- 👤 Alfredo E. Patag
- 👤 II Gerald J. Garvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:32
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; F16K11/0853; A; A61; A61M; A61M39/00; A61M39/22; A61M39/223; A61M39/10; A61M39/16; A61M5/00; A61M5/50; A61M5/5086; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/86823
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
274 words
A valve comprising: a valve body having at least one inlet port and at least one outlet port; a valve stem positioned at least partially within said valve body and including a handle, said valve stem including at least one fluid flow passage therethrough, said valve stem being rotatable relative to said valve body between a first position in which fluid flow between said at least one inlet port and said at least one outlet port is prevented, and a second position in which said at least one fluid flow passage connects said at least one inlet port with said at least one outlet port for fluid flow therethrough; and rotation interference members for substantially inhibiting initial relative rotation between said valve stem and said valve body between said first position and said second position, said rotation interference members including a rigid protrusion extending either from said valve body or said valve stem and a shear-away interference member extending from the other of said valve body or said valve stem, said rigid protrusion and said shear-away interference member being positioned on said valve body and said valve stem such that said shear-away interference member and said rigid protrusion contact each other and interfere with initial rotation of said valve stem relative to said valve body between said first position and said second position, whereby, said shear-away interference member is removed from its attachment with said valve body or said valve stem by said rigid protrusion when rotational force exerted on said valve relative to said valve body to move said valve stem from said first position to said second position exceeds a predetermined value.
Claim 2
Dependent Claim
274 words
A valve comprising: a valve body having at least one inlet port and at least one outlet port; a valve stem positioned at least partially within said valve body and including a handle, said valve stem including at least one fluid flow passage therethrough, said valve stem being rotatable relative to said valve body between a first position in which fluid flow between said at least one inlet port and said at least one outlet port is prevented, and a second position in which said at least one fluid flow passage connects said at least one inlet port with said at least one outlet port for fluid flow therethrough; and rotation interference members for substantially inhibiting initial relative rotation between said valve stem and said valve body between said first position and said second position, said rotation interference members including a rigid protrusion extending either from said valve body or said valve stem and a shear-away interference member extending from the other of said valve body or said valve stem, said rigid protrusion and said shear-away interference member being positioned on said valve body and said valve stem such that said shear-away interference member and said rigid protrusion contact each other and interfere with initial rotation of said valve stem relative to said valve body between said first position and said second position, whereby, said shear-away interference member is removed from its attachment with said valve body or said valve stem by said rigid protrusion when rotational force exerted on said valve relative to said valve body to move said valve stem from said first position to said second position exceeds a predetermined value.
Claim 3
Dependent Claim
75 words
A valve according to claim 1 wherein said predetermined force value required to detach said shear-away interference member during initial movement of said valve stem relative to said valve body from said first position to said second position is significantly greater than the value of rotational force required to subsequently move said valve stem relative to said valve body from said first position to said second position after said shear-away interference member has been detached.
Claim 4
Dependent Claim
40 words
A valve according to claim 1 wherein said at least one fluid flow passage through said valve stem includes a V-shaped fluid flow passage having a first arm and a second arm which converge into a single fluid flow path.
Claim 5
Dependent Claim
33 words
A valve according to claim 1 wherein said at least one inlet port includes two inlet ports, said two inlet ports and said at least one outlet port lying in a single plane.
Claim 6
Dependent Claim
37 words
A valve according to claim 1 wherein said valve body .and said valve stem include shoulder members which allow rotation of said valve body relative to said valve stem through an angle of only 120° or less.
Claim 7
Dependent Claim
23 words
A valve according to claim 1 wherein said handle includes indicia formed thereon for marking the path of fluid flow through said valve.
Claim 8
Dependent Claim
53 words
A valve according to claim 1 further including at least one vent passage formed in said valve stem such that said at least one inlet port and said at least one fluid flow passage are in fluid flow communication when said valve stem is in said first position relative to said valve body.
Claim 9
Dependent Claim
40 words
A valve according to claim 7 wherein said at least one fluid flow passage through said valve stem includes a V-shaped fluid flow passage having a first arm and a second arm which converge into a single fluid flow path.
Claim 10
Dependent Claim
49 words
A valve according to claim 7 wherein said at least one inlet port includes two inlet ports, said two inlet ports and said at least one outlet port lying in a single plane and said two inlet ports being rotationally spaced from each other at an angle of 60°.
Claim 11
Dependent Claim
46 words
A valve according to claim 7 wherein said valve body includes a body shoulder member and said valve stem includes a stem shoulder member which cooperate to prevent rotation of said valve body relative to said valve stem through an angle of more than approximately 120°.
Claim 12
Dependent Claim
23 words
A valve according to claim 7 wherein said handle includes indicia formed thereon for marking the path of fluid flow through said valve.
Claim 13
Dependent Claim
228 words
A valve comprising: a valve body having at least two inlet ports and at least one outlet port; a valve stem positioned at least partially within said valve body and including a handle, said valve stem including a fluid flow passage having a first arm and a second arm which converge into a single fluid flow path, said valve stem being rotatable relative to said valve body between a first position in which fluid flow between said at least two inlet ports and said at least one outlet port is prevented, a second position in which said first arm of said fluid flow passage connects one of said at least two inlet ports with said at least one outlet port for fluid flow therethrough, and a third position in which said second arm of said fluid flow passage connects the other of said at least two inlet ports with said at least one outlet port for fluid flow therethrough; and shoulder members on said valve body and said value stem for preventing relative rotation of said valve stem and said valve body except between said first, second, and third positions, whereby, rotation of said valve stem relative to said valve body to allow fluid flow connection between said one of said at least two inlet ports and said other of said at least two inlet ports is prevented.
Claim 14
Dependent Claim
228 words
A valve comprising: a valve body having at least two inlet ports and at least one outlet port; a valve stem positioned at least partially within said valve body and including a handle, said valve stem including a fluid flow passage having a first arm and a second arm which converge into a single fluid flow path, said valve stem being rotatable relative to said valve body between a first position in which fluid flow between said at least two inlet ports and said at least one outlet port is prevented, a second position in which said first arm of said fluid flow passage connects one of said at least two inlet ports with said at least one outlet port for fluid flow therethrough, and a third position in which said second arm of said fluid flow passage connects the other of said at least two inlet ports with said at least one outlet port for fluid flow therethrough; and shoulder members on said valve body and said value stem for preventing relative rotation of said valve stem and said valve body except between said first, second, and third positions, whereby, rotation of said valve stem relative to said valve body to allow fluid flow connection between said one of said at least two inlet ports and said other of said at least two inlet ports is prevented.
Claim 15
Dependent Claim
25 words
A valve according to claim 12 wherein said at least two inlet ports and said at least one outlet port lie in a single plane.
Claim 16
Dependent Claim
29 words
A valve according to claim 12 wherein said shoulder members allow rotation of said valve body relative to said valve stem through an angle of only 120° or less.
Claim 17
Dependent Claim
23 words
A valve according to claim 12 wherein said handle includes indicia formed thereon for marking the path of fluid flow through said valve.
References Cited (Backward Citations)
US992502A
Cited
US1162935A
Cited
US3048192A
Cited
US3091239A
Cited
US3097585A
Cited
US3536451A
Cited
US3678960A
Cited
US3788599A
Cited
US3834372A
Cited
US3858601A
Cited
US3831625A
Cited
US3985133A
Cited
US3957082A
Cited
US3994294A
Cited
US4219021A
Cited
US4460358A
Cited
US4585411A
Cited
US4585411B1
Cited
US4593717A
Cited
US4552334A
Cited
US4557725A
Cited
US4604093A
Cited
US5005604A
Cited
US4585442A
Cited
US4689043A
Cited
US4691895A
Cited
US4904245A
Cited
US5017192A
Cited
US5156186A
Cited
US5104387A
Cited
US5219327A
Cited
US5244463A
Cited
US5364364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-08-21 | 1999-02-20 | 1999-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-08-21 | 2003-02-20 | 2003-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-08-21 | 2007-02-20 | 2007-08-22 | $7700.00 | Window Closed / Lapsed |