US5540656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic angioplasty device having surface disruptions
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1995-01-24
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Granted: 1996-07-30
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Expires: 2015-01-24
Abstract
Abstract An ultrasonic angioplasty device comprising an elongate ultrasound transmission member having a proximal end attachable to an ultrasound generating device and a bulbous distal head or probe formed on the distal end thereof for effecting ablative treatment of an occluding lesion. The ultrasound transmission member may be formed of one or more superelastic metal alloys such as NiTi (50 at. % Ni). A guidewire lumen may be formed in the distal head or probe to permit passage of a guidewire therethrough. Portions of the ultrasound transmission member may be curved or bent. Portions of the ultrasound transmission member may be tapered or narrowed. One or more surface disruptions may be formed on the distal head or probe to improve treatment efficacy. An increased hardness coating or outer skin may be formed on the ultrasound transmission member. The device of the present invention may be incorporated into an angioscopic device.
Inventors
- 👤 Russell Pflueger
- 👤 Henry Nita
- 👤 Steven Bacich
- 👤 Robert Siegel
- 👤 Geoffrey Bond
- 👤 Eugene DeCastro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:19
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/22004; A61B17/22012; A61B18/00; A61B18/04; A61B18/12; A61B18/1206; A61B2017/00017; A61B2017/00115; A61B2017/00119; A61B2017/00137; A61B2017/00141; A61B2017/00146; A61B2017/00831; A61B2017/0084; A61B2017/00849; A61B2017/00973; A61B2017/22014; A61B2017/22015; A61B2017/22018; A61B2017/22038; A61B2017/22039; A61B2017/22041; A61B17/32; A61B17/320068; A61B2017/320072; A61B2017/320073; A61B2017/320088; A61B2018/00005; A61B2018/00011; A61B2217/00; A61B2217/002; A61B2217/007; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30092; A61F2210/00; A61F2210/0014; A61F2210/0023; A61F2210/0042; A61M; A61M25/00; A61M25/01; A61M2025/0183
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
90 words
In an ultrasonic angioplasty device of the type wherein an elongate ultrasound transmission member has a proximal end attached to an ultrasound transducer and a distal end for applying ultrasonic energy to an occlusive lesion and a body extending between said proximal and distal ends, the improvement comprising: an enlarged distal head disposed on the distal end of the ultrasound transmission member such that said distal head is laterally displaced in relation to said body of said ultrasound transmission member; and at least one surface disruption in the distal head.
Claim 2
Dependent Claim
90 words
In an ultrasonic angioplasty device of the type wherein an elongate ultrasound transmission member has a proximal end attached to an ultrasound transducer and a distal end for applying ultrasonic energy to an occlusive lesion and a body extending between said proximal and distal ends, the improvement comprising: an enlarged distal head disposed on the distal end of the ultrasound transmission member such that said distal head is laterally displaced in relation to said body of said ultrasound transmission member; and at least one surface disruption in the distal head.
Claim 3
Dependent Claim
36 words
The improvement of claim 1 further comprising: said elongate ultrasound transmission member being bent near its distal end so that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 4
Dependent Claim
50 words
The improvement of claim 1 further comprising: said distal head is disposed on the distal end of said elongate ultrasound transmission member at a point off-center in relation to said distal head so that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 5
Dependent Claim
17 words
The improvement of claim 1 further comprising: said ultrasound transmission member and said distal head are rotatable.
Claim 6
Dependent Claim
22 words
The improvement of claim 1 further comprising: said distal head having a guide wire aperture formed therethrough for receiving a guide wire.
Claim 7
Dependent Claim
17 words
The improvement of claim 1 further comprising: said elongate ultrasound transmission member comprising a superelastic metal alloy.
Claim 8
Dependent Claim
93 words
The improvement of claim 1 further comprising: an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough, wherein said elongate ultrasound transmission member extends through said lumen; and said elongate ultrasound transmission member is mounted within said lumen of said elongate flexible catheter such that said ultrasound transmission member is movable longitudinally in relation thereto so that said ultrasound transmission member may be advanced to extend beyond said distal end of said catheter and retracted in relation to said distal end of said catheter.
Claim 9
Dependent Claim
103 words
The improvement of claim 1 further comprising: an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough, wherein said elongate ultrasound transmission member extends through said lumen; said lumen of said elongate catheter is larger than the diameter of said elongate ultrasound transmission member so that cooling fluid may be applied between the lumen wall and the elongate transmission member to dissipate heat from the ultrasound member; and said elongate catheter comprises a cooling fluid outflow port disposed at its distal end through which said cooling fluid may leave said lumen of the catheter.
Claim 10
Dependent Claim
84 words
In an ultrasonic angioplasty device of the type wherein an elongate ultrasound transmission member has a proximal end attached to an ultrasound transducer and a distal end for applying ultrasonic energy to an occlusive lesion and a body extending between said proximal and distal ends, the improvement comprising: an enlarged distal head on the distal end of the ultrasound transmission member; and at least one surface disruption in the distal head, wherein said surface disruption comprises a circumferential groove formed around the distal head.
Claim 11
Dependent Claim
84 words
In an ultrasonic angioplasty device of the type wherein an elongate ultrasound transmission member has a proximal end attached to an ultrasound transducer and a distal end for applying ultrasonic energy to an occlusive lesion and a body extending between said proximal and distal ends, the improvement comprising: an enlarged distal head on the distal end of the ultrasound transmission member; and at least one surface disruption in the distal head, wherein said surface disruption comprises a circumferential groove formed around the distal head.
Claim 12
Dependent Claim
40 words
The improvement of claim 9 further comprising: the enlarged distal head is disposed on the distal end of the ultrasound transmission member such that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 13
Dependent Claim
36 words
The improvement of claim 10 further comprising: said elongate ultrasound transmission member being bent near its distal end so that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 14
Dependent Claim
50 words
The improvement of claim 10 further comprising: said distal head is disposed on the distal end of said elongate ultrasound transmission member at a point off-center in relation to said distal head so that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 15
Dependent Claim
17 words
The improvement of claim 10 further comprising: said ultrasound transmission member and said distal head are rotatable.
Claim 16
Dependent Claim
22 words
The improvement of claim 10 further comprising: said distal head having a guide wire aperture formed therethrough for receiving a guide wire.
Claim 17
Dependent Claim
17 words
The improvement of claim 10 further comprising: said elongate ultrasound transmission member comprising a superelastic metal alloy.
Claim 18
Dependent Claim
93 words
The improvement of claim 10 further comprising: an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough, wherein said elongate ultrasound transmission member extends through said lumen; and said elongate ultrasound transmission member is mounted within said lumen of said elongate flexible catheter such that said ultrasound transmission member is movable longitudinally in relation thereto so that said ultrasound transmission member may be advanced to extend beyond said distal end of said catheter and retracted in relation to said distal end of said catheter.
Claim 19
Dependent Claim
103 words
The improvement of claim 10 further comprising: an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough, wherein said elongate ultrasound transmission member extends through said lumen; said lumen of said elongate catheter is larger than the diameter of said elongate ultrasound transmission member so that cooling fluid may be applied between the lumen wall and the elongate transmission member to dissipate heat from the ultrasound member; and said elongate catheter comprises a cooling fluid outflow port disposed at its distal end through which said cooling fluid may leave said lumen of the catheter.
Claim 20
Dependent Claim
75 words
In an ultrasonic angioplasty device of the type wherein an elongate ultrasound transmission member has a proximal end attached to an ultrasound transducer and a distal end for applying ultrasonic energy to an occlusive lesion, the improvement comprising: an enlarged distal head on the distal end of the ultrasound transmission member; and at least one surface disruption in the distal head, wherein said surface disruption comprises a plurality of dimples formed on the distal head.
Claim 21
Dependent Claim
75 words
In an ultrasonic angioplasty device of the type wherein an elongate ultrasound transmission member has a proximal end attached to an ultrasound transducer and a distal end for applying ultrasonic energy to an occlusive lesion, the improvement comprising: an enlarged distal head on the distal end of the ultrasound transmission member; and at least one surface disruption in the distal head, wherein said surface disruption comprises a plurality of dimples formed on the distal head.
Claim 22
Dependent Claim
40 words
The improvement of claim 18 further comprising: the enlarged distal head is disposed on the distal end of the ultrasound transmission member such that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 23
Dependent Claim
36 words
The improvement of claim 19 further comprising: said elongate ultrasound transmission member being bent near its distal end so that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 24
Dependent Claim
50 words
The improvement of claim 19 further comprising: said distal head is disposed on the distal end of said elongate ultrasound transmission member at a point off-center in relation to said distal head so that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 25
Dependent Claim
17 words
The improvement of claim 19 further comprising: said ultrasound transmission member and said distal head are rotatable.
Claim 26
Dependent Claim
22 words
The improvement of claim 19 further comprising: said distal head having a guide wire aperture formed therethrough for receiving a guide wire.
Claim 27
Dependent Claim
17 words
The improvement of claim 19 further comprising: said elongate ultrasound transmission member comprising a superelastic metal alloy.
Claim 28
Dependent Claim
93 words
The improvement of claim 19 further comprising: an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough, wherein said elongate ultrasound transmission member extends through said lumen; and said elongate ultrasound transmission member is mounted within said lumen of said elongate flexible catheter such that said ultrasound transmission member is movable longitudinally in relation thereto so that said ultrasound transmission member may be advanced to extend beyond said distal end of said catheter and retracted in relation to said distal end of said catheter.
Claim 29
Dependent Claim
103 words
The improvement of claim 19 further comprising: an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough, wherein said elongate ultrasound transmission member extends through said lumen; said lumen of said elongate catheter is larger than the diameter of said elongate ultrasound transmission member so that cooling fluid may be applied between the lumen wall and the elongate transmission member to dissipate heat from the ultrasound member; and said elongate catheter comprises a cooling fluid outflow port disposed at its distal end through which said cooling fluid may leave said lumen of the catheter.
Claim 30
Dependent Claim
179 words
An ultrasonic angioplasty apparatus, comprising: an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough; an elongate ultrasound transmission member having a proximal end attached to an ultrasound transducer and a distal end for applying ultrasonic energy to an occlusive lesion and a body extending between said proximal and distal ends, wherein said elongate ultrasound transmission member extends through said lumen such that said ultrasound transmission member is movable longitudinally in relation thereto so that said ultrasound transmission member may be advanced to extend beyond said distal end of said catheter and retracted in relation to said distal end of said catheter and so that said ultrasound transmission member is rotatable; and an enlarged distal head disposed on the distal end of the ultrasound transmission member such that said distal head is movable longitudinally and rotatable with said ultrasound transmission member and such that said distal head is laterally displaced in relation to said body of said ultrasound transmission member, wherein said distal head comprises at least one surface disruption.
Claim 31
Dependent Claim
179 words
An ultrasonic angioplasty apparatus, comprising: an elongate flexible catheter having a proximal end, a distal end, and at least one lumen extending longitudinally therethrough; an elongate ultrasound transmission member having a proximal end attached to an ultrasound transducer and a distal end for applying ultrasonic energy to an occlusive lesion and a body extending between said proximal and distal ends, wherein said elongate ultrasound transmission member extends through said lumen such that said ultrasound transmission member is movable longitudinally in relation thereto so that said ultrasound transmission member may be advanced to extend beyond said distal end of said catheter and retracted in relation to said distal end of said catheter and so that said ultrasound transmission member is rotatable; and an enlarged distal head disposed on the distal end of the ultrasound transmission member such that said distal head is movable longitudinally and rotatable with said ultrasound transmission member and such that said distal head is laterally displaced in relation to said body of said ultrasound transmission member, wherein said distal head comprises at least one surface disruption.
Claim 32
Dependent Claim
35 words
The apparatus of claim 27 wherein: said elongate ultrasound transmission member is bent near its distal end so that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 33
Dependent Claim
49 words
The apparatus of claim 27 wherein: said distal head is disposed on the distal end of said elongate ultrasound transmission member at a point off-center in relation to said distal head so that said distal head is laterally displaced in relation to said body of said ultrasound transmission member.
Claim 34
Dependent Claim
16 words
The apparatus of claim 27 wherein said elongate ultrasound transmission member comprises a superelastic metal alloy.
Claim 35
Dependent Claim
73 words
The apparatus of claim 27 wherein: said lumen of said elongate catheter is larger than the diameter of said elongate ultrasound transmission member so that cooling fluid may be applied between the lumen wall and the elongate transmission member to dissipate heat from the ultrasound member; and said elongate catheter comprises a cooling fluid outflow port disposed at its distal end through which said cooling fluid may leave said lumen of the catheter.
Claim 36
Dependent Claim
21 words
The apparatus of claim 27 wherein said distal head has a guide wire aperture formed therethrough for receiving a guide wire.
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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) | 1999-07-30 | 2000-01-29 | 2000-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-30 | 2004-01-29 | 2004-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-30 | 2008-01-29 | 2008-07-30 | $7700.00 | Window Closed / Lapsed |