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US20040030321A1 Expired / Lapsed US ⏱️ 0.0 years remaining

Medical valve with positive flow characteristics

Assignee: ICU Medical Inc
•
Filing: 2003-08-07
•
Granted: —
•
Expires: 2023-08-07
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Abstract

Abstract A valve for selectively permitting a fluid flow between first and second medical implements is disclosed. The valve has a housing with an interface suitable for receiving a connector portion of a first medical device such as a catheter, and a seal made of a flexible material. The seal has a first end in fluid communication with the interface, a second end suitable for receiving the second medical device, and at least one slit in fluid communication with the first end and the second end. The slit defines a restricted fluid flow path and a relatively small interior volume when in an undisturbed state, defines an expanded fluid flow path and a larger interior volume upon the introduction of the second medical instrument into the slit, and retracts to define a restricted flow path and a small interior volume upon the withdrawal of the second medical device from the seal.

Inventors

  • 👤 Thomas Fangrow

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 04:10
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0247; A61M39/04; A61M39/045; A61M39/10; A61M39/22; A61M39/26; A61M2039/0205; A61M2039/0258; A61M2039/027; A61M2039/062; A61M2039/263

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 224 words
1 . A medical valve for selectively permitting fluid to flow between a first medical device and a second medical device, the valve comprising: a housing having an interface suitable for receiving a connector portion of the first medical device; and a seal made of a flexible material, the seal having a downstream end in fluid communication with the interface, an upstream end suitable for receiving at least a portion of the second medical device, and a normally substantially closed passage in fluid communication with the downstream end and the upstream end, the passage being relatively wide in the region of the upstream end and the passage being relatively narrow in the region of the downstream end, the passage adapted to have a relatively small interior volume when in an undisturbed state and a larger interior volume upon the introduction of the second medical device into the upstream end of the passage, the passage adapted to retract to define a restricted flow path and a relatively small interior volume upon the withdrawal of the second medical device from the seal, the upstream end adapted to initially be substantially sealed against the inserted portion of the second medical device as the second medical device is withdrawn, so that a fluid occupying the interior volume is forced toward the downstream end as the passage walls collapse.
Claim 2
Dependent Claim 224 words
1 . A medical valve for selectively permitting fluid to flow between a first medical device and a second medical device, the valve comprising: a housing having an interface suitable for receiving a connector portion of the first medical device; and a seal made of a flexible material, the seal having a downstream end in fluid communication with the interface, an upstream end suitable for receiving at least a portion of the second medical device, and a normally substantially closed passage in fluid communication with the downstream end and the upstream end, the passage being relatively wide in the region of the upstream end and the passage being relatively narrow in the region of the downstream end, the passage adapted to have a relatively small interior volume when in an undisturbed state and a larger interior volume upon the introduction of the second medical device into the upstream end of the passage, the passage adapted to retract to define a restricted flow path and a relatively small interior volume upon the withdrawal of the second medical device from the seal, the upstream end adapted to initially be substantially sealed against the inserted portion of the second medical device as the second medical device is withdrawn, so that a fluid occupying the interior volume is forced toward the downstream end as the passage walls collapse.
Claim 3
Dependent Claim 67 words
2 . The medical valve defined in claim 1 , wherein the seal comprises: a lead lumen formed in the downstream end of the body and in fluid communication with the passage; a neck formed in the upstream region of the seal; and a transverse flange in the upstream region of the seal, the transverse flange having at least one opening in fluid communication with the passage.
Claim 4
Dependent Claim 30 words
3 . The medical valve of claim 2 , wherein the lead lumen is centered on an axis substantially parallel to or collinear with a longitudinal axis of the seal.
Claim 5
Dependent Claim 28 words
4 . The medical valve of claim 2 , wherein the seal comprises a substantially rectangular slab of flexible material and the neck is coplanar with the body.
Claim 6
Dependent Claim 28 words
5 . The medical valve of claim 1 , wherein the passage in the undisturbed state tapers inwardly from the upstream end to a region of minimum width.
Claim 7
Dependent Claim 28 words
6 . The medical valve of claim 5 , wherein the passage in the undisturbed state tapers outwardly from the region of minimum width toward the downstream end.
Claim 8
Dependent Claim 126 words
7 . The medical valve of claim 2 , wherein the seal has first and second lateral portions and the housing further comprises: a seal holder attached to the interface, the seal holder comprising a hollow cylindrical member that extends from the interface and has an axial opening opposite the interface, and first and second side openings; a lead cannula attached to and in fluid communication with the interface and extending from the interface toward the axial opening, wherein the seal is disposed within the seal holder such that the lead cannula extends at least partially into the lead lumen, the flange extends across the axial opening, and the first and second lateral portions of the seal body extend into the first and second side openings.
Claim 9
Dependent Claim 30 words
8 . The medical valve of claim 7 , wherein the lead cannula is centered on an axis substantially parallel to or collinear with a longitudinal axis of the housing.
Claim 10
Dependent Claim 63 words
9 . The medical valve of claim 1 , wherein a lead cannula attached to and in fluid communication with the interface extends from the interface into the downstream end of the seal, an end of the lead cannula being disposed within the passage at a location in the upstream direction from the furthest downstream periphery of the interior volume of the seal.
Claim 11
Dependent Claim 47 words
10 . The medical valve of claim 7 , wherein the seal is adapted to move within the housing in the downstream direction upon insertion of the second medical device and to move within the housing in the upstream direction upon withdrawal of the second medical device.
Claim 12
Dependent Claim 40 words
11 . The medical valve of claim 10 , wherein the lead lumen of the seal expands as the seal moves in the downstream direction and the lead cannula extends further into the interior of the passage of the seal.

References Cited (Backward Citations)

US1578517A Cited
US2210098A Cited
US2289677A Cited
US2847995A Cited
US2994249A Cited
US2999499A Cited
US3135261A Cited
US3134380A Cited
US3502097A Cited
US3648684A Cited
US3659602A Cited
US3788519A Cited
US3831629A Cited
US3861388A Cited
US3986508A Cited
US4022205A Cited
US3976073A Cited
US3976063A Cited
US3974832A Cited
US4005710A Cited
US4076285A Cited
US4040240A Cited
US4019512A Cited
US4149535A Cited
US4079738A Cited
US4080965A Cited
US4214779A Cited
US4143853A Cited
US4161949A Cited
US4191183A Cited
US4187846A Cited
US4219912A Cited
US4243034A Cited
US4508367A Cited
US4334551A Cited
US4257416A Cited
US4405163A Cited
US4328802A Cited
US4810241A Cited
US4439188A Cited
US4329987A Cited
US4338933A Cited
US4405312A Cited
US4392851A Cited
US4439193A Cited
US4457749A Cited
US4432759A Cited
US4432765A Cited
US4511359A Cited
US4512766A Cited
US4752292A Cited
US5199947A Cited
US5344414A Cited
US4610469A Cited
US4564054A Cited
US4759756A Cited
US4592356A Cited
US4725207A Cited
US4607665A Cited
US4645494A Cited
US4804015A Cited
US4673400A Cited
US4834716A Cited
US4813938A Cited
US4834664A Cited
US5135489A Cited
US5797897A Cited
US5411499A Cited
US5100394A Cited
US5211638A Cited
US5188620A Cited
US4832214A Cited
US5018532A Cited
US4946445A Cited
US4928212A Cited
US5009490A Cited
US4943896A Cited
US4998927A Cited
US4998713A Cited
US5203775A Cited
US5201717A Cited
US5122123A Cited
US5046456A Cited
US5873862A Cited
US5533708A Cited
US5556388A Cited
US5290254A Cited
US5401245A Cited
US5487731A Cited
US5549651A Cited
US5549566A Cited
US5738663A Cited
US6019746A Cited
US6245048B1 Cited
US6428520B1 Cited
US5957898A Cited
US5899821A Cited
US6171287B1 Cited
US6113068A Cited

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