US5320634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balloon catheter with seated cutting edges
Assignee: Cedars-Sinai Medical Center
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Filing: 1992-04-17
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Granted: 1994-06-14
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Expires: 2012-04-17
Abstract
Abstract A stenotic dilitation device includes a plurality of elongated atherotomes with cutters embedded in a substrate mounted on the outer surface of a flexible balloon along predetermined crease lines. The atherotomes are aligned along the longitudinal axis of the catheter. The ends of the balloon are attached to a hollow catheter tube over fluid ports in the catheter which establish fluid communication between the catheter and the internal chamber of the balloon. Fluid flow into and out of the chamber will inflate and deflate the balloon. When the balloon is deflated, retraction of the atherotomes toward the longitudinal axis of the catheter causes the creases and lines to form flaps of the balloon membrane material between adjacent atherotomes. In such deflated configuration, the flaps, rather than the cutters of the atherotomes, contact the vessel wall as the device is manipulated into position adjacent a stenotic site. On inflation of the balloon at the stenotic site, the atherotomes are urged against the stenosis to incise the stenosis. The incisions relieve pressure in the wall of the vessel and thus enhance dilation of the vessel by the balloon. After dilation, the balloon is deflated and the device is removed.
Inventors
- 👤 Dennis M. Vigil
- 👤 Peter Barath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:33
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61B17/22; A61B2017/22051; A61B2017/22061; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1086; A61M25/104
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
135 words
An angioplasty device for dilating a stenosis in a blood vessel comprising: a catheter having a distal end and a proximal end; a flexible and substantially cylindrical balloon membrane having an inner surface, an outer surface, a distal end, and a proximal end, said distal end of said balloon membrane being attached near the distal end of said catheter, and said proximal end of said balloon membrane being attached to said catheter at a distance proximal from the distal end of said catheter; and a plurality of atherotomes mounted on the outer surface of said balloon membrane and aligned along the longitudinal axis of said catheter; wherein each of said atherotomes comprises a cutting structure with a base, and said base is embedded in a substrate mounted on the outer surface of the balloon membrane.
Claim 2
Dependent Claim
135 words
An angioplasty device for dilating a stenosis in a blood vessel comprising: a catheter having a distal end and a proximal end; a flexible and substantially cylindrical balloon membrane having an inner surface, an outer surface, a distal end, and a proximal end, said distal end of said balloon membrane being attached near the distal end of said catheter, and said proximal end of said balloon membrane being attached to said catheter at a distance proximal from the distal end of said catheter; and a plurality of atherotomes mounted on the outer surface of said balloon membrane and aligned along the longitudinal axis of said catheter; wherein each of said atherotomes comprises a cutting structure with a base, and said base is embedded in a substrate mounted on the outer surface of the balloon membrane.
Claim 3
Dependent Claim
37 words
A device as recited in claim 1, wherein said catheter is in fluid communication with said balloon membrane through fluid ports formed in said catheter between said distal end and said proximal end of said balloon membrane.
Claim 4
Dependent Claim
18 words
A device as recited in claim 1, wherein said cutting structure and said base is formed from metal.
Claim 5
Dependent Claim
56 words
A device as recited in claim 1, wherein: each said atherotome is permanently mounted on said outer surface of said balloon membrane with an adhesive material; said adhesive material is applied to the outer surface of said balloon membrane; and said substrate is attached to said outer surface of said balloon membrane by said adhesive material.
Claim 6
Dependent Claim
16 words
A device as recited in claim 1, wherein said substrate is formed from a resinous material.
Claim 7
Dependent Claim
14 words
A device as recited in claim 1, wherein said substrate is made of polyurethane.
Claim 8
Dependent Claim
21 words
A device as recited in claim 1, wherein said plurality of said atherotomes consists of three or more of said atherotomes.
Claim 9
Dependent Claim
28 words
A device as recited in claim 1, wherein said balloon membrane has a plurality of flaps formed thereon between said adjacent atherotomes when said balloon membrane is deflated.
Claim 10
Dependent Claim
19 words
A device as recited in claim 1 wherein each said atherotome is circumferentially equidistant from each adjacent said atherotome.
Claim 11
Dependent Claim
149 words
An angioplasty device for dilating a stenosis in a blood vessel comprising: a catheter having a distal end and a proximal end; a flexible and substantially cylindrical balloon membrane having an inner surface, an outer surface, a distal end, and a proximal end, said distal end of said balloon membrane being attached near the distal end of said catheter, and said proximal end of said balloon membrane being attached to said catheter at a distance proximal from the distal end of said catheter; and a plurality of atherotomes mounted on the outer surface of said balloon membrane and aligned along the longitudinal axis of said catheter; wherein each of said atherotomes comprises a cutting structure with a base, and said base is embedded in a substrate; and said structure is formed having step extensions in the base of each said structure for permanently embedding said structure in said substrate.
Claim 12
Dependent Claim
149 words
An angioplasty device for dilating a stenosis in a blood vessel comprising: a catheter having a distal end and a proximal end; a flexible and substantially cylindrical balloon membrane having an inner surface, an outer surface, a distal end, and a proximal end, said distal end of said balloon membrane being attached near the distal end of said catheter, and said proximal end of said balloon membrane being attached to said catheter at a distance proximal from the distal end of said catheter; and a plurality of atherotomes mounted on the outer surface of said balloon membrane and aligned along the longitudinal axis of said catheter; wherein each of said atherotomes comprises a cutting structure with a base, and said base is embedded in a substrate; and said structure is formed having step extensions in the base of each said structure for permanently embedding said structure in said substrate.
Claim 13
Dependent Claim
151 words
An angioplasty device for dilating a stenosis in a blood vessel comprising: a catheter having a distal end and a proximal end; a flexible and substantially cylindrical balloon membrane having an inner surface, an outer surface, a distal end, and a proximal end, said distal end of said balloon membrane being attached near the distal end of said catheter, and said proximal end of said balloon membrane being attached to said catheter at a distance proximal from the distal end of said catheter; and a plurality of atherotomes mounted on the outer surface of said balloon membrane and aligned along the longitudinal axis of said catheter; wherein each of said atherotomes comprises a cutting structure with a base, and said base is embedded in a substrate; and said structure is formed having a plurality of semi-circular grooves formed into the base of said structure to enhance longitudinal flexibility of said structure.
Claim 14
Dependent Claim
151 words
An angioplasty device for dilating a stenosis in a blood vessel comprising: a catheter having a distal end and a proximal end; a flexible and substantially cylindrical balloon membrane having an inner surface, an outer surface, a distal end, and a proximal end, said distal end of said balloon membrane being attached near the distal end of said catheter, and said proximal end of said balloon membrane being attached to said catheter at a distance proximal from the distal end of said catheter; and a plurality of atherotomes mounted on the outer surface of said balloon membrane and aligned along the longitudinal axis of said catheter; wherein each of said atherotomes comprises a cutting structure with a base, and said base is embedded in a substrate; and said structure is formed having a plurality of semi-circular grooves formed into the base of said structure to enhance longitudinal flexibility of said structure.
Claim 15
Dependent Claim
155 words
An angioplasty device for dilating a stenosis in a blood vessel, comprising: a balloon membrane having an outer surface and having a substantially cylindrical shape when inflated and forming a plurality of concave sides when deflated; a plurality of atherotomes, each of said atherotomes having a cutting structure embedded in a substrate with a cutting edge of the structure protruding from said substrate, said substrate being mounted on the outer surface of said balloon membrane to align said atherotome along the longitudinal axis of said balloon membrane and circumferentially position said atherotomes equidistant from each adjacent said atherotome; and a plurality of creases formed in the surface of said balloon membrane to form flaps in said balloon membrane when said balloon membrane is deflated each crease being in substantially parallel alignment with the longitudinal axis of said balloon membrane to provide an attachment point for one said atherotome and position said atherotome between said flaps.
Claim 16
Dependent Claim
155 words
An angioplasty device for dilating a stenosis in a blood vessel, comprising: a balloon membrane having an outer surface and having a substantially cylindrical shape when inflated and forming a plurality of concave sides when deflated; a plurality of atherotomes, each of said atherotomes having a cutting structure embedded in a substrate with a cutting edge of the structure protruding from said substrate, said substrate being mounted on the outer surface of said balloon membrane to align said atherotome along the longitudinal axis of said balloon membrane and circumferentially position said atherotomes equidistant from each adjacent said atherotome; and a plurality of creases formed in the surface of said balloon membrane to form flaps in said balloon membrane when said balloon membrane is deflated each crease being in substantially parallel alignment with the longitudinal axis of said balloon membrane to provide an attachment point for one said atherotome and position said atherotome between said flaps.
Claim 17
Dependent Claim
15 words
An angioplasty device as recited in claim 12, wherein said substrate is made of polyurethane.
Claim 18
Dependent Claim
170 words
An angioplasty device for dilating a stenosis in a blood vessel, comprising: a balloon membrane having an outer surface and having a substantially cylindrical shape when inflated and forming a plurality of concave sides when deflated; a plurality of atherotomes, each of said atherotomes having a cutting structure embedded in a substrate with a cutting edge of the structure protruding from said substrate, said substrate being mounted on the outer surface of said balloon membrane to align said atherotome along the longitudinal axis of said balloon membrane and circumferentially position said atherotomes equidistant from each adjacent said atherotome; and a plurality of creases formed in the surface of said balloon membrane to form flaps in said balloon membrane when said balloon membrane is deflated each crease being in substantially parallel alignment with the longitudinal axis of said balloon membrane to provide an attachment point for one said atherotome and position said atherotome between said flaps; wherein said structure is formed having step extensions permanently embedding said structure in said substrate.
Claim 19
Dependent Claim
170 words
An angioplasty device for dilating a stenosis in a blood vessel, comprising: a balloon membrane having an outer surface and having a substantially cylindrical shape when inflated and forming a plurality of concave sides when deflated; a plurality of atherotomes, each of said atherotomes having a cutting structure embedded in a substrate with a cutting edge of the structure protruding from said substrate, said substrate being mounted on the outer surface of said balloon membrane to align said atherotome along the longitudinal axis of said balloon membrane and circumferentially position said atherotomes equidistant from each adjacent said atherotome; and a plurality of creases formed in the surface of said balloon membrane to form flaps in said balloon membrane when said balloon membrane is deflated each crease being in substantially parallel alignment with the longitudinal axis of said balloon membrane to provide an attachment point for one said atherotome and position said atherotome between said flaps; wherein said structure is formed having step extensions permanently embedding said structure in said substrate.
Claim 20
Dependent Claim
22 words
An angioplasty device as recited in claim 14, wherein said structure is formed having a plurality of semi-circular grooves in said structure.
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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) | 1997-06-13 | 1997-12-13 | 1998-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-13 | 2001-12-13 | 2002-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-13 | 2005-12-13 | 2006-06-14 | $7700.00 | Window Closed / Lapsed |