Patent US5304115A successfully refreshed from Google Patents.
US5304115A
Expired / Lapsed
US
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Ultrasonic angioplasty device incorporating improved transmission member and ablation probe
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 1991-01-11
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Granted: 1994-04-19
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Expires: 2011-01-11
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 10:03
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: 37
Claim 1
Independent Claim
61 words
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: the ultrasound transmission member having a distal head at the distal end and being tapered in the direction extending proximally from the distal head.
Claim 2
Dependent Claim
61 words
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: the ultrasound transmission member having a distal head at the distal end and being tapered in the direction extending proximally from the distal head.
Claim 3
Dependent Claim
20 words
The device of claim 1 wherein said ultrasound transmission member is at least partially formed of a superelastic metal alloy.
Claim 4
Dependent Claim
24 words
The device of claim 2 wherein said superelastic metal alloy comprises a shape memory alloy which exhibits superelastic properties when in its martensitic state.
Claim 5
Dependent Claim
25 words
The device of claim 2 wherein said ultrasound transmission member is formed of nickel-titanium alloy having a nickel content of approximately 50.8 atomic percent nickel.
Claim 6
Dependent Claim
32 words
The device of claim 1 further comprising: an elongate flexible catheter having a proximal end, a distal end, and a lumen extending therethrough; wherein the ultrasound transmission member extends through the lumen.
Claim 7
Dependent Claim
61 words
The device of claim 5 further comprising: at least one coolant inlet port located near the proximal end of the catheter for infusion of coolant liquid into the lumen of the catheter; and at least one coolant outlet aperture formed in said catheter near the distal end thereof to allow coolant liquid to flow out of the lumen of the catheter.
Claim 8
Dependent Claim
48 words
The device of claim 5 wherein the ultrasound transmission member is alternately advanceable and retractable relative to said catheter such that the distal head may be (a) advanced distally out of and beyond the distal end of the catheter lumen and (b) retracted proximally into the catheter lumen.
Claim 9
Dependent Claim
22 words
The device of claim 7 wherein said ultrasound transmission member is fully extractable and removable from the proximal end of the catheter.
Claim 10
Dependent Claim
21 words
The device of claim 1 further comprising an enlarged distal head formed on the distal end of said ultrasound transmission member.
Claim 11
Dependent Claim
14 words
The device of claim 9 wherein said enlarged distal head is bulbous in configuration.
Claim 12
Dependent Claim
15 words
The device of claim 9 wherein said enlarged distal head is generally spherical in configuration.
Claim 13
Dependent Claim
16 words
The device of claim 9 wherein said enlarged distal head is a generally disc-shaped in configuration.
Claim 14
Dependent Claim
50 words
The device of claim 9 wherein said ultrasound transmission member is attached to the distal head at a point which is off-center on the distal head such that a greater portion of the distal head extends to one side of said ultrasound transmission member than to the opposite side thereof.
Claim 15
Dependent Claim
55 words
The device of claim 1 wherein the ultrasound transmission member is formed of material of known hardness and wherein the device further comprises: an outer skin formed on the ultrasound transmission member; said outer skin having a hardness which is greater than the hardness of the material of which the ultrasound transmission member is formed.
Claim 16
Dependent Claim
15 words
The device of claim 14 wherein the ultrasound transmission member comprises a peaned outer skin.
Claim 17
Dependent Claim
54 words
The device of claim 1 wherein the ultrasound transmission member is formed of material of known hardness and wherein the device further comprises: a coating disposed on said ultrasound transmission member; said coating having a surface hardness which is greater than the hardness of the material of which the ultrasound transmission member is formed.
Claim 18
Dependent Claim
13 words
The device of claim 16 wherein said coating comprises a titanium nitride coating.
Claim 19
Dependent Claim
22 words
The device of claim 1, further comprising a guidewire aperture formed in the distal head to permit passage of a guidewire therethrough.
Claim 20
Dependent Claim
149 words
An ultrasonic angioplasty device comprising: an elongate flexible catheter having a proximal end, a distal end and at least one lumen extending longitudinally therethrough; an ultrasound transmission member extending through said lumen; said ultrasound transmission member having a proximal end extending beyond the proximal end of the catheter for connection to an ultrasound energy source and a distal end which is adjacent the distal end of said catheter to effect treatment of lesions lying beyond the distal end of the catheter; and said ultrasound transmission member being at least partially formed of a superelastic metal alloy; wherein an enlarged distal head is formed on the distal end of the ultrasound transmission member and wherein at least one guidewire aperture is formed through said distal head to permit passage of a guidewire therethrough; and wherein the ultrasound transmission member is tapered in the direction extending proximally from the distal head.
Claim 21
Dependent Claim
149 words
An ultrasonic angioplasty device comprising: an elongate flexible catheter having a proximal end, a distal end and at least one lumen extending longitudinally therethrough; an ultrasound transmission member extending through said lumen; said ultrasound transmission member having a proximal end extending beyond the proximal end of the catheter for connection to an ultrasound energy source and a distal end which is adjacent the distal end of said catheter to effect treatment of lesions lying beyond the distal end of the catheter; and said ultrasound transmission member being at least partially formed of a superelastic metal alloy; wherein an enlarged distal head is formed on the distal end of the ultrasound transmission member and wherein at least one guidewire aperture is formed through said distal head to permit passage of a guidewire therethrough; and wherein the ultrasound transmission member is tapered in the direction extending proximally from the distal head.
Claim 22
Dependent Claim
36 words
The device of claim 19 wherein the diameter of the ultrasound transmission member is 0.020"-0.030" and wherein the diameter of the ultrasound transmission member is tapered to approximately 0.005"-0.020" with 5-30 cm of its distal tip.
Claim 23
Dependent Claim
13 words
The device of claim 19 wherein said device is connected to an angioscope.
Claim 24
Dependent Claim
33 words
The device of claim 19 further comprising a guidewire extending longitudinally along the length of the catheter and external to the catheter, the guidewire having a distal end passing through the guidewire aperture.
Claim 25
Dependent Claim
24 words
The device of claim 19 wherein said superelastic metal alloy comprises a shape memory alloy which exhibits superelastic properties when in its martensitic state.
Claim 26
Dependent Claim
25 words
The device of claim 19 wherein said ultrasound transmission member is formed of nickel-titanium alloy having a nickel content of approximately 50.8 atomic percent nickel.
Claim 27
Dependent Claim
61 words
The device of claim 19 further comprising: at least one coolant inlet port located near the proximal end of the catheter for infusion of coolant liquid into the lumen of the catheter; and at least one coolant outlet aperture formed in said catheter near the distal end thereof to allow coolant liquid to flow out of the lumen of the catheter.
Claim 28
Dependent Claim
14 words
The device of claim 19 wherein said enlarged distal head is bulbous in configuration.
Claim 29
Dependent Claim
15 words
The device of claim 19 wherein said enlarged distal head is generally spherical in configuration.
Claim 30
Dependent Claim
16 words
The device of claim 19 wherein said enlarged distal head is a generally disc-shaped in configuration.
Claim 31
Dependent Claim
50 words
The device of claim 19 wherein said ultrasound transmission member is attached to the distal head at a point which is off-center on the distal head such that a greater portion of the distal head extends to one side of said ultrasound transmission member than to the opposite side thereof.
Claim 32
Dependent Claim
48 words
The device of claim 19 wherein the ultrasound transmission member is alternately advanceable and retractable relative to said catheter such that the distal head may be (a) advanced distally out of and beyond the distal end of the catheter lumen and (b) retracted proximally into the catheter lumen.
Claim 33
Dependent Claim
22 words
The device of claim 30 wherein said ultrasound transmission member is fully extractable and removable from the proximal end of the catheter.
Claim 34
Dependent Claim
55 words
The device of claim 30 wherein the ultrasound transmission member is formed of material of known hardness and wherein the device further comprises: an outer skin formed on the ultrasound transmission member; said outer skin having a hardness which is greater than the hardness of the material of which the ultrasound transmission member is formed.
Claim 35
Dependent Claim
15 words
The device of claim 32 wherein the ultrasound transmission member comprises a peaned outer skin.
Claim 36
Dependent Claim
54 words
The device of claim 19 wherein the ultrasound transmission member is formed of material of known hardness and wherein the device further comprises: a coating disposed on said ultrasound transmission member; said coating having a surface hardness which is greater than the hardness of the material of which the ultrasound transmission member is formed.
Claim 37
Dependent Claim
13 words
The device of claim 34 wherein said coating comprises a titanium nitride coating.
References Cited (Backward Citations)
US3433226A
Cited
US3352303A
Cited
US3526219A
Cited
US3589363A
Cited
US3565062A
Cited
US3618594A
Cited
US3809093A
Cited
US3823717A
Cited
US3861391A
Cited
US3896811A
Cited
DE2349120A1
Cited
US4188952A
Cited
DE2438648A1
Cited
US4223676A
Cited
FR2424733A1
Cited
US4214586A
Cited
US4366819A
Cited
US4800876B1
Cited
US4800876A
Cited
US4431006A
Cited
US4587958A
Cited
US4665906A
Cited
US4692139A
Cited
US4979939A
Cited
US4587972A
Cited
US4960411A
Cited
US4589419A
Cited
EP0189329A2
Cited
EP0208175A2
Cited
WO1987001276A1
Cited
US4750902A
Cited
US4957111A
Cited
EP0234951A1
Cited
US4794931A
Cited
DE3707567A1
Cited
DE3707921A1
Cited
WO1987005793A1
Cited
US4821731A
Cited
US4808153A
Cited
EP0293472A1
Cited
US5058570A
Cited
US4988356A
Cited
US4841977A
Cited
US4799496A
Cited
DE3826414A1
Cited
US4898575A
Cited
US4917097A
Cited
US4870953A
Cited
EP0316796A2
Cited
WO1989005123A1
Cited
WO1989006515A1
Cited
WO1989007419A1
Cited
US4844092A
Cited
DE3812836A1
Cited
US4924863A
Cited
EP0347098A2
Cited
WO1990001300A1
Cited
US4920954A
Cited
US4919133A
Cited
WO1990007303A1
Cited
FR2641693A3
Cited
US4923441A
Cited
FR2643272A1
Cited
US5061238A
Cited
US4936281A
Cited
WO1991002489A1
Cited
US5076276A
Cited
EP0443256A1
Cited
US5069664A
Cited
WO1991014401A1
Cited
EP0472368A2
Cited
US5100423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-04-18 | 1997-10-18 | 1998-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-18 | 2001-10-18 | 2002-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-18 | 2005-10-18 | 2006-04-19 | $7700.00 | Window Closed / Lapsed |