Patent US3572335A successfully refreshed from Google Patents.
US4637396A
Expired / Lapsed
US
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Balloon catheter
Assignee: Cook Inc
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Filing: 1984-10-26
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Granted: 1987-01-20
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Expires: 2004-10-26
Abstract
Abstract A balloon catheter having an expandable and collapsible elastic balloon is shown, wherein the balloon is reinforced by knitted fabric such that the balloon can not expand beyond a predetermined diameter regardless of the internal pressure applied to the balloon. The knitted construction permits the balloon to expand in diameter without shortening in length, and permits the balloon to collapse smoothly without folds and wrinkles.
Inventors
- 👤 William A. Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:08
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M29/00; A61M29/02; A61M2025/1043; A61M2025/1075; A61M2025/1084
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
184 words
A balloon catheter, comprising: a hollow flexible catheter tube; a flexible inner member disposed coaxially within said catheter tube and fixed thereto against relative longitudinal displacement, the distal end of said inner member extending beyond the distal end of said catheter tube, said inner member being sized and configured to provide a longitudinal passageway between said inner member and said catheter tube for the passage of fluid therethrough; connecting means for connecting the longitudinal passageway to an external source of pressurized fluid; and a balloon disposed coaxially about said inner member, the proximal end of said balloon being fixed and sealed to the distal end of said catheter tube and the distal end of said balloon being fixed and sealed to the distal end of said inner member to define an annular balloon chamber, said annular balloon chamber being in fluid flow communication with the longitudinal passageway, said balloon including an impervious elastic wall for retaining pressure therein, said elastic wall being reinforced by a knitted fabric tube for permitting said balloon to expand to a predetermined maximum diameter while remaining fixed in length.
Claim 2
Dependent Claim
184 words
A balloon catheter, comprising: a hollow flexible catheter tube; a flexible inner member disposed coaxially within said catheter tube and fixed thereto against relative longitudinal displacement, the distal end of said inner member extending beyond the distal end of said catheter tube, said inner member being sized and configured to provide a longitudinal passageway between said inner member and said catheter tube for the passage of fluid therethrough; connecting means for connecting the longitudinal passageway to an external source of pressurized fluid; and a balloon disposed coaxially about said inner member, the proximal end of said balloon being fixed and sealed to the distal end of said catheter tube and the distal end of said balloon being fixed and sealed to the distal end of said inner member to define an annular balloon chamber, said annular balloon chamber being in fluid flow communication with the longitudinal passageway, said balloon including an impervious elastic wall for retaining pressure therein, said elastic wall being reinforced by a knitted fabric tube for permitting said balloon to expand to a predetermined maximum diameter while remaining fixed in length.
Claim 3
Dependent Claim
48 words
The balloon catheter of claim 1, wherein said knitted fabric tube includes a continuous yarn strand arranged generally in a helix, said yarn being configured as periodically spaced loops, with each loop in each turn of the helix passing through an adjacent loop in the next preceding turn.
Claim 4
Dependent Claim
36 words
The balloon catherter of claim 2, wherein the continuous yarn strand includes a plurality of parallel plies, at least one of said plies being elastic and at least one of said plies being strong and inelastic.
Claim 5
Dependent Claim
22 words
The balloon catheter of claim 3, wherein said elastic ply is made of Spandex, and said inelastic ply is made of Kevlar.
Claim 6
Dependent Claim
23 words
The balloon catheter of claim 3, wherein said flexible inner member includes a longitudinal groove therein for aiding in providing the longitudinal passageway.
Claim 7
Dependent Claim
15 words
The balloon catheter of claim 5, wherein said connecting means includes a Luer lock connector.
Claim 8
Dependent Claim
31 words
The balloon catheter of claim 5, and further including a lumen within said flexible inner member providing a passageway from the distal end to the proximal end of said balloon catheter.
Claim 9
Dependent Claim
107 words
A balloon catheter, comprising: a hollow flexible catheter tube; connecting means for connecting said catheter tube to an external source of pressurized fluid; an expandable and collapsible balloon disposed coaxially about said catheter tube, the ends of said balloon being fixed and sealed to said catheter tube to define an annular balloon chamber, said balloon including an impervious elastic wall for retaining pressure therein, said elastic wall being reinforced by a knitted fabric tube for permitting said balloon to expand to a predetermined maximum diameter while remaining fixed in length; and means for providing pressurized fluid flow communication between said catheter tube and said annular balloon chamber.
Claim 10
Dependent Claim
107 words
A balloon catheter, comprising: a hollow flexible catheter tube; connecting means for connecting said catheter tube to an external source of pressurized fluid; an expandable and collapsible balloon disposed coaxially about said catheter tube, the ends of said balloon being fixed and sealed to said catheter tube to define an annular balloon chamber, said balloon including an impervious elastic wall for retaining pressure therein, said elastic wall being reinforced by a knitted fabric tube for permitting said balloon to expand to a predetermined maximum diameter while remaining fixed in length; and means for providing pressurized fluid flow communication between said catheter tube and said annular balloon chamber.
Claim 11
Dependent Claim
24 words
The balloon catheter of claim 8, wherein said means for providing fluid flow communication includes an aperture through the wall of said catheter tube.
Claim 12
Dependent Claim
49 words
The balloon catheter of claim 8, wherein said knitted fabric tube includes a continuous yarn strand arranged generally in a helix, said yarn strand being configured as periodically spaced loops, with each loop in each turn of the helix passing through an adjacent loop in the next preceding turn.
Claim 13
Dependent Claim
36 words
The balloon catheter of claim 10, wherein the continuous yarn strand includes a plurality of parallel plies, at least one of said plies being elastic and at least one of said plies being strong and inelastic.
Claim 14
Dependent Claim
22 words
The balloon catheter of claim 11, wherein said elastic ply is made of Spandex, and said inelastic ply is made of Kevlar.
Claim 15
Dependent Claim
15 words
The balloon catheter of claim 11, wherein said connecting means includes a Luer lock connector.
Claim 16
Dependent Claim
103 words
A balloon catheter, comprising: a catheter tube; an expandable and collapsible balloon attached to said catheter tube, said balloon including an impervious elastic layer for retaining pressure therein, said balloon being reinforced by a knitted fabric layer configured as a tube including a continuous yarn strand arranged generally in a helix, said yarn strand being configured as periodically spaced loops, with each loop in each turn of the helix passing through an adjacent loop in the next preceding turn, to limit the maximum expanded diameter of said balloon; and means for connecting said balloon in communication with an external source of pressurized fluid.
Claim 17
Dependent Claim
103 words
A balloon catheter, comprising: a catheter tube; an expandable and collapsible balloon attached to said catheter tube, said balloon including an impervious elastic layer for retaining pressure therein, said balloon being reinforced by a knitted fabric layer configured as a tube including a continuous yarn strand arranged generally in a helix, said yarn strand being configured as periodically spaced loops, with each loop in each turn of the helix passing through an adjacent loop in the next preceding turn, to limit the maximum expanded diameter of said balloon; and means for connecting said balloon in communication with an external source of pressurized fluid.
Claim 18
Dependent Claim
36 words
The balloon catheter of claim 14, wherein the continuous yarn strand includes a plurality of parallel plies, at least one of said plies being elastic and at least one of said plies being strong and inelastic.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-19 | 1990-07-21 | 1991-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-19 | 1994-07-21 | 1995-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-19 | 1998-07-21 | 1999-01-20 | $7700.00 | Window Closed / Lapsed |