Patent US5865178A successfully refreshed from Google Patents.
US5865178A
Expired / Lapsed
US
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Method and apparatus for intravascular ultrasonography
Assignee: Cardiovascular Imaging Systems Inc
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Filing: 1995-06-06
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Granted: 1999-02-02
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Expires: 2015-06-06
Abstract
Abstract A catheter is provided for insertion into the blood vessel of a patient for ultrasonically imaging the vessel wall. The catheter includes a tubular element and an internally housed drive cable for effective a circumferential scan about the catheter of an ultrasonic generating means. Both the tubular element and the drive cable are of a size and flexibility sufficient to permit their introduction into the vessel and subsequent advancement through the vessel to the location of the vessel wall where imaging is desired.
Inventors
- 👤 Paul G. Yock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:36
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320783; A61B17/22; A61B17/22004; A61B17/22012; A61B5/00; A61B5/02; A61B5/02007; A61B8/00; A61B8/12; A61B8/44; A61B8/4444; A61B8/445; A61B8/4461; A61B2017/00831; A61B2017/00902; A61B2017/00924; A61B2017/22038; A61B2017/22045; A61B2017/22051; A61B2017/22052; A61B2017/22072; A61B2017/22074; A61B2017/22078; A61B90/00; A61B90/36; A61B90/37; A61B2090/376; A61B2090/378; A61B2090/3782; A61B2090/3784
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
70 words
A vascular catheter system comprising: a catheter body having proximal and distal regions and a balloon inflation lumen disposed within the proximal region of the catheter body and extending to the distal region of the catheter body; an ultrasonic transducer operably disposed within the distal region of said catheter body; and a balloon disposed about the distal region of said catheter body and in communication with the balloon inflation lumen.
Claim 2
Dependent Claim
70 words
A vascular catheter system comprising: a catheter body having proximal and distal regions and a balloon inflation lumen disposed within the proximal region of the catheter body and extending to the distal region of the catheter body; an ultrasonic transducer operably disposed within the distal region of said catheter body; and a balloon disposed about the distal region of said catheter body and in communication with the balloon inflation lumen.
Claim 3
Dependent Claim
17 words
The catheter system of claim 1, wherein the transducer is adapted to rotate within the catheter body.
Claim 4
Dependent Claim
19 words
The catheter system of claim 2, further comprising a flexible rotatable elongate element and a therapeutic device carried thereon.
Claim 5
Dependent Claim
21 words
The catheter system of claim 3, wherein the therapeutic device comprises a cutting element for reducing a stenosis within the vessel.
Claim 6
Dependent Claim
19 words
The catheter system of claim 4, further comprising means for collecting material which is removed by the cutting element.
Claim 7
Dependent Claim
20 words
The catheter system of claim 3, wherein the flexible rotatable elongate element comprises a drive cable comprising helically braided wire.
Claim 8
Dependent Claim
26 words
The catheter system of claim 2, further comprising a flexible guidewire associated with the catheter body and adapted to assist steering of the elongate flexible element.
Claim 9
Dependent Claim
19 words
The catheter of claim 2, further comprising apparatus for displaying an image from the signals received from the transducer.
Claim 10
Dependent Claim
38 words
The catheter system of claim 2, wherein the ultrasonic transducer comprises a crystal together with a backing material carried by the crystal for inhibiting propagation of sonic waves from the crystal in the direction of the backing material.
Claim 11
Dependent Claim
21 words
The catheter system of claim 2, wherein the catheter body further includes an acoustically transparent material over the distal region thereof.
Claim 12
Independent Claim
111 words
A method for imaging and treating a region of a patient's blood vessel using a catheter system comprising a catheter body having proximal and distal regions, an ultrasonic transducer operably disposed within the distal region of the catheter body, a balloon inflation lumen extending from the proximal region to the distal region of the catheter body, and a balloon disposed about the distal region of the catheter body, said method comprising the steps of: advancing the catheter body into the blood vessel until the balloon lies within a region of interest; generating an image using the transducer located within the region of interest; and inflating the balloon through the inflation lumen.
Claim 13
Independent Claim
111 words
A method for imaging and treating a region of a patient's blood vessel using a catheter system comprising a catheter body having proximal and distal regions, an ultrasonic transducer operably disposed within the distal region of the catheter body, a balloon inflation lumen extending from the proximal region to the distal region of the catheter body, and a balloon disposed about the distal region of the catheter body, said method comprising the steps of: advancing the catheter body into the blood vessel until the balloon lies within a region of interest; generating an image using the transducer located within the region of interest; and inflating the balloon through the inflation lumen.
Claim 14
Dependent Claim
24 words
The method of claim 11, wherein the ultrasonic transducer generates a signal having a frequency in the range from about 5 to 50 megahertz.
Claim 15
Dependent Claim
30 words
The method of claim 11, wherein the ultrasonic transducer generates a signal which is directed generally axially relative to the blood vessel and deflected transversely by a rotating reflective surface.
Claim 16
Dependent Claim
21 words
The method of claim 11, wherein the ultrasonic transducer generates a signal which is directed generally transversely by rotating said transducer.
Claim 17
Dependent Claim
39 words
The method of claim 11, wherein the ultrasonic transducer generates a signal which is directed at a forward angle of from about 10° to 85° relative to the axis of the blood vessel, whereby a conical scan is performed.
Claim 18
Dependent Claim
47 words
The method of claim 11, further comprising the step of re-canalizing a region of stenosis using interventional means located on the distal end of a flexible rotatable elongate element disposed within the catheter body, wherein the location of intervention is based at least partly on the image.
Claim 19
Dependent Claim
18 words
The method of claim 16, wherein the interventional means is a rotating blade used to sever stenotic material.
Claim 20
Dependent Claim
13 words
The method of claim 16, wherein the interventional means is an abrasive surface.
Claim 21
Dependent Claim
12 words
The method of claim 16, wherein the interventional means is a drill.
Claim 22
Dependent Claim
16 words
The method of claim 16, wherein the interventional means is a perfusion port for delivery drugs.
Claim 23
Dependent Claim
19 words
The method of claim 12, wherein the ultrasonic transducer generates a signal which is swept about a preselected pattern.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-02-01 | 2002-08-03 | 2003-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-01 | 2006-08-03 | 2007-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-01 | 2010-08-03 | 2011-02-02 | $7700.00 | Window Closed / Lapsed |