US5683410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single-lumen balloon catheter having a directional valve
Assignee: Target Therapeutics Inc
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Filing: 1993-11-04
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Granted: 1997-11-04
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Expires: 2013-11-04
Abstract
Abstract This invention is a single-lumen balloon catheter having a valve seat on the distal end of the catheter, distal of the balloon, which may be operated by a control wire having a valve plug disposed on the wire. The valve seat may be engaged by the valve plug from either direction, depending on the installation of the control wire. In either event, if the valve plug is installed distally of the valve seat in the catheter lumen, the valve is closed by pulling on the control wire (or moving the control wire in a proximal direction) and introducing fluid through the catheter lumen through the balloon. Alternatively, the guidewire, with its integral valve plug, may be introduced from the proximal end of the catheter and may traverse the body of the balloon to engage the valve seat in the distal end of the catheter. Pushing on the control wire will seat the valve, allowing the introduction of fluid through the catheter lumen to inflate the balloon. The latter arrangement allows the control wire to be interchanged with other guidewires a physician may wish to use. The balloon provided for in this invention is of a single length and does not change its axial length as it is inflated.
Inventors
- 👤 Gene Samson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:39
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0074; A61M25/0075; A61M25/10; A61M2025/1043; A61M2025/1063; A61M2025/1093; A61M25/01; A61M25/09
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
104 words
A balloon catheter assembly comprising a proximal shaft with a proximal coupler; and a distal balloon region that has an expandable balloon extending distally of the proximal shaft and a catheter tip extending distally of the expandable balloon, and that also forms a lumen that is in fluid communication with the proximal coupler, said catheter tip having a circumferentially cinched portion of reduced inner and outer diameter which forms a valve seat within said lumen; wherein said valve seat is adapted to engage a valve plug formed on a control wire that is coaxially disposed within said lumen and thereby form a fluid seal.
Claim 2
Dependent Claim
104 words
A balloon catheter assembly comprising a proximal shaft with a proximal coupler; and a distal balloon region that has an expandable balloon extending distally of the proximal shaft and a catheter tip extending distally of the expandable balloon, and that also forms a lumen that is in fluid communication with the proximal coupler, said catheter tip having a circumferentially cinched portion of reduced inner and outer diameter which forms a valve seat within said lumen; wherein said valve seat is adapted to engage a valve plug formed on a control wire that is coaxially disposed within said lumen and thereby form a fluid seal.
Claim 3
Dependent Claim
49 words
The balloon catheter assembly of claim 1, further comprising a control wire having proximal and distal ends and a valve plug that is disposed near its distal end, and that is adapted to engage said valve seat by sliding axially through the catheter lumen, thereby forming a fluid seal.
Claim 4
Dependent Claim
45 words
The balloon catheter assembly of claim 2, wherein said valve seat further comprises proximal and distal valve surfaces, and said control wire is adapted to engage the valve seat on either of the valve surfaces with the valve plug to thereby form a fluid seal.
Claim 5
Dependent Claim
24 words
The balloon catheter assembly of claim 3, wherein said control wire is a guidewire having a proximal end portion and a shapable distal tip.
Claim 6
Dependent Claim
49 words
The balloon catheter assembly of claim 2, wherein the inflatable balloon additionally comprises proximal and distal ends and a balloon inner member extending therebetween, said balloon inner member allowing fluid communication between the lumen and the inflatable balloon and being adapted to allow axial passage of the control wire.
Claim 7
Dependent Claim
22 words
The balloon catheter assembly of claim 1, wherein the circumferentially cinched portion of the catheter tip further comprises a circumferential radiopaque band.
Claim 8
Dependent Claim
112 words
A balloon catheter comprising a proximal shaft with a proximal coupler; and a distal balloon region having an expandable balloon extending distally from the proximal shaft, a catheter tip extending distally from the expandable balloon, a lumen formed coaxially within the expandable balloon and catheter tip and in fluid communication with the proximal coupler, and a valve seat in the catheter tip having a bore of reduced inner diameter within the lumen and which allows for coaxial passage of a control wire, said valve seat also forming proximal and distal valve surfaces each adapted to engage a valve plug formed on the control wire and thereby seal said lumen for fluid pressurization.
Claim 9
Dependent Claim
112 words
A balloon catheter comprising a proximal shaft with a proximal coupler; and a distal balloon region having an expandable balloon extending distally from the proximal shaft, a catheter tip extending distally from the expandable balloon, a lumen formed coaxially within the expandable balloon and catheter tip and in fluid communication with the proximal coupler, and a valve seat in the catheter tip having a bore of reduced inner diameter within the lumen and which allows for coaxial passage of a control wire, said valve seat also forming proximal and distal valve surfaces each adapted to engage a valve plug formed on the control wire and thereby seal said lumen for fluid pressurization.
Claim 10
Dependent Claim
56 words
The balloon catheter assembly of claim 7, further comprising a control wire having proximal and distal ends and a valve plug that is disposed near its distal end and that is adapted to engage either the distal or proximal valve surfaces by sliding axially through the catheter lumen, thereby forming a fluid seal for fluid pressurization.
Claim 11
Dependent Claim
24 words
The balloon catheter assembly of claim 8, wherein said control wire is a guidewire having a proximal end portion and a shapable distal tip.
Claim 12
Dependent Claim
49 words
The balloon catheter assembly of claim 8, wherein the inflatable balloon additionally comprises proximal and distal ends and a balloon inner member extending therebetween, said balloon inner member allowing fluid communication between the lumen and the inflatable balloon and being adapted to allow axial passage of the control wire.
Claim 13
Dependent Claim
22 words
The balloon catheter assembly of claim 8, wherein a portion of said catheter tip is circumferentially cinched to form said valve seat.
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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) | 2000-11-03 | 2001-05-05 | 2001-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-03 | 2005-05-05 | 2005-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-03 | 2009-05-05 | 2009-11-04 | $7700.00 | Window Closed / Lapsed |