US5074845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter with heat-fused balloon with waist
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1991-03-27
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Granted: 1991-12-24
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Expires: 2011-03-27
Abstract
Abstract Disclosed is an everting balloon catheter in which the balloon has a waist at the desired eversion point to minimize the size of the distal tip of the catheter during insertion. Preferably, the distal end of the outer body is bevelled and the waist is located just distal and radial to the tip of the outer body when the inner body is fully extended distal to the outer body. Usually, the waist is formed by heat shrinking the balloon during manufacture, thus usually increasing balloon thickness at the waist. Also, in the disclosed invention, the balloon is attached to the outer catheter bod via heat fusion. Generally, the outer body and the balloon are both formed of compositions having at least one component in common to promote heat fusion for attachment of the balloon. Preferably that component is polyethylene.
Inventors
- 👤 Manouchehr Miraki
- 👤 Carmen Diaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:59
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0119; A61M25/10; A61M2025/1043; A61M2025/1065
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
174 words
A catheter comprising outer and inner tubes having proximal and distal ends, said inner tube being slidable positioned in said outer tube and being dimensioned to provide a fluid passageway between said inner and outer tubes, with said outer tube distal end being bevelled; and a balloon formed from an expandable tubular member having first and second opposing ends with one of said ends attached to said outer tube distal end and said second end being attached to said inner tube distal end, said tubular member being dimensioned and sized to allow said inner tube to be selectively drawn into said outer tube and to be extended out of said outer tube, said tubular member further being formed at a location distal said attachment to said outer tube distal end with a waist having a diameter smaller than the remainder of said tubular member, said smaller diameter waist dividing said tubular member into a first balloon section adjacent said outer tube distal end and a second balloon section adjacent said inner tube distal end.
Claim 2
Dependent Claim
174 words
A catheter comprising outer and inner tubes having proximal and distal ends, said inner tube being slidable positioned in said outer tube and being dimensioned to provide a fluid passageway between said inner and outer tubes, with said outer tube distal end being bevelled; and a balloon formed from an expandable tubular member having first and second opposing ends with one of said ends attached to said outer tube distal end and said second end being attached to said inner tube distal end, said tubular member being dimensioned and sized to allow said inner tube to be selectively drawn into said outer tube and to be extended out of said outer tube, said tubular member further being formed at a location distal said attachment to said outer tube distal end with a waist having a diameter smaller than the remainder of said tubular member, said smaller diameter waist dividing said tubular member into a first balloon section adjacent said outer tube distal end and a second balloon section adjacent said inner tube distal end.
Claim 3
Dependent Claim
18 words
The catheter of claim 1 wherein said smaller diameter waist is formed by heat shrinking said tubular member.
Claim 4
Dependent Claim
16 words
The catheter of claim 1 wherein said tubular member is formed with an outer textured surface.
Claim 5
Dependent Claim
18 words
The catheter of claim 1 wherein said first and second balloon sections are of different diameters when expanded.
Claim 6
Dependent Claim
21 words
The catheter of claim 4 wherein said first balloon section has a diameter larger than that of said second balloon section.
Claim 7
Dependent Claim
26 words
The catheter of claim 4 wherein said smaller diameter waist is dimensioned to resist inversion when said inner tube is being drawn into said outer tube.
Claim 8
Dependent Claim
21 words
The catheter of claim 6 wherein said first balloon section has a diameter larger than that of said second balloon section.
Claim 9
Dependent Claim
16 words
The catheter of claim 7 wherein said tubular member is formed with an outer textured surface.
Claim 10
Dependent Claim
26 words
The catheter of claim 1 wherein said smaller diameter waist is dimensioned to resist inversion when said inner tube is being drawn into said outer tube.
Claim 11
Dependent Claim
196 words
A catheter comprising outer and inner concentrically mounted tubes having proximal and distal ends, said inner tube being slidable positioned in said outer tube and being dimensioned to provide a fluid passageway between said inner and outer tubes, with said outer tube distal end being bevelled; and a balloon formed from an expandable tubular member having first and second opposing ends with one of said ends attached to said outer tube distal end and said second end being attached to said inner tube distal end, said tubular member being dimensioned and sized to allow said inner tube to be selectively drawn into said outer tube and to be extended out of said outer tube, said tubular member further being formed at a location distal said attachment to said outer tube distal end with a waist having a diameter smaller than the remainder of said tubular member, said smaller diameter waist dividing said tubular member into a first balloon section adjacent said outer tube distal end and a second balloon section adjacent said inner tube distal end, with said first balloon section having a diameter when expanded larger than that of said second balloon section when expanded.
Claim 12
Dependent Claim
196 words
A catheter comprising outer and inner concentrically mounted tubes having proximal and distal ends, said inner tube being slidable positioned in said outer tube and being dimensioned to provide a fluid passageway between said inner and outer tubes, with said outer tube distal end being bevelled; and a balloon formed from an expandable tubular member having first and second opposing ends with one of said ends attached to said outer tube distal end and said second end being attached to said inner tube distal end, said tubular member being dimensioned and sized to allow said inner tube to be selectively drawn into said outer tube and to be extended out of said outer tube, said tubular member further being formed at a location distal said attachment to said outer tube distal end with a waist having a diameter smaller than the remainder of said tubular member, said smaller diameter waist dividing said tubular member into a first balloon section adjacent said outer tube distal end and a second balloon section adjacent said inner tube distal end, with said first balloon section having a diameter when expanded larger than that of said second balloon section when expanded.
Claim 13
Dependent Claim
16 words
The catheter of claim 10 wherein said tubular member is formed with an outer textured surface.
Claim 14
Dependent Claim
18 words
The catheter of claim 10 wherein said first balloon section lies circumferentially about the outer tube distal end.
Claim 15
Dependent Claim
26 words
The catheter of claim 10 wherein said smaller diameter waist is dimensioned to resist inversion when said inner tube is being drawn into said outer tube.
Claim 16
Dependent Claim
16 words
The catheter of claim 13 wherein said tubular member is formed with an outer textured surface.
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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) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |