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US5507292A
Expired / Lapsed
US
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Intravascular catheter having combined imaging abrasion head
Assignee: Boston Scientific Scimed Inc
•
Filing: 1994-08-22
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Granted: 1996-04-16
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Expires: 2014-08-22
Abstract
Abstract Front-end and side-on intravascular catheters are described that comprise an abrasive head contained substantially within a housing. Aspiration means and flushing means are connected to the region of grinding to remove dislodged debris. A preferred embodiment has the abrasive surface of a rotatable head comprised of diamond powder. Another preferred embodiment has an ultrasonic transducer affixed to the head to permit transluminal imaging of the site of occlusion.
Inventors
- 👤 Yue-Teh Jang
- 👤 William M. Belef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:14
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320783; A61B8/00; A61B8/12; A61B17/22; A61B2017/22051; A61B2017/22052; A61B2017/320004
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
51 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter, having a non-expandable abrasive member into the vascular system; and contacting the stenotic material with said abrasive member, whereby the stenotic material is simultaneously abraded and collected by the catheter through an aperture.
Claim 2
Independent Claim
51 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter, having a non-expandable abrasive member into the vascular system; and contacting the stenotic material with said abrasive member, whereby the stenotic material is simultaneously abraded and collected by the catheter through an aperture.
Claim 3
Dependent Claim
18 words
A method according to claim 1, wherein the abraded stenotic material is withdrawn from the catheter by aspiration.
Claim 4
Dependent Claim
23 words
A method according to claim 2, wherein the abraded stenotic material is withdrawn from the catheter by a combination of flushing and aspiration.
Claim 5
Dependent Claim
21 words
A method according to claim 1, further comprising imaging the vascular system with an ultrasonic transducer, mounted on the abrasive member.
Claim 6
Dependent Claim
29 words
A method according to claim 1, further comprising inflating at least one inflatable balloon attached to the catheter so that the stenotic material penetrates the aperture of the housing.
Claim 7
Dependent Claim
12 words
A method according to claim 1, wherein the abrasive member is rotated.
Claim 8
Dependent Claim
12 words
A method according to claim 1, wherein the abrasive member is translated.
Claim 9
Dependent Claim
24 words
A method according to claim 1, wherein the catheter and its abrasive member are positioned adjacent target stenotic material with aid of x-ray fluoroscopy.
Claim 10
Independent Claim
73 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter, having an abrasive member into the vascular system; contacting the stenotic material with said abrasive member, whereby the stenotic material is abraded and collected by the catheter; and monitoring the extent of removal of stenotic material by ultrasound using an ultrasonic transducer mounted on the abrasive member, concurrent with or subsequent to the abrasion process.
Claim 11
Independent Claim
73 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter, having an abrasive member into the vascular system; contacting the stenotic material with said abrasive member, whereby the stenotic material is abraded and collected by the catheter; and monitoring the extent of removal of stenotic material by ultrasound using an ultrasonic transducer mounted on the abrasive member, concurrent with or subsequent to the abrasion process.
Claim 12
Dependent Claim
18 words
A method according to claim 9, wherein the abraded stenotic material is withdrawn from the catheter by aspiration.
Claim 13
Dependent Claim
23 words
A method according to claim 10, wherein the abraded stenotic material is withdrawn from the catheter by a combination of flushing and aspiration.
Claim 14
Dependent Claim
29 words
A method according to claim 9, further comprising inflating at least one inflatable balloon attached to the catheter so that the stenotic material penetrates the aperture of the housing.
Claim 15
Dependent Claim
12 words
A method according to claim 9, wherein the abrasive member is rotated.
Claim 16
Dependent Claim
12 words
A method according to claim 9, wherein the abrasive member is translated.
Claim 17
Dependent Claim
24 words
A method according to claim 9, wherein the catheter and its abrasive member are positioned adjacent target stenotic material with aid of x-ray fluoroscopy.
Claim 18
Independent Claim
77 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter having an abrasive member and a housing into the vascular system; urging the abrasive member against the stenotic material by using a means for biasing attached to the side of the housing at a distal region of the catheter; and contacting the stenotic material with said abrasive member, whereby the stenotic material is abraded and collected by the catheter.
Claim 19
Independent Claim
77 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter having an abrasive member and a housing into the vascular system; urging the abrasive member against the stenotic material by using a means for biasing attached to the side of the housing at a distal region of the catheter; and contacting the stenotic material with said abrasive member, whereby the stenotic material is abraded and collected by the catheter.
Claim 20
Independent Claim
57 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter having an abrasive member into the vascular system; and abrading the stenotic material while it penetrates an aperture in the catheter at least partially containing said abrasive member, whereby the stenotic material is abraded and collected by the catheter.
Claim 21
Independent Claim
57 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter having an abrasive member into the vascular system; and abrading the stenotic material while it penetrates an aperture in the catheter at least partially containing said abrasive member, whereby the stenotic material is abraded and collected by the catheter.
Claim 22
Dependent Claim
21 words
The method of claim 17, wherein the abraded stenotic material is collected by means of flushing and aspiration within the catheter.
Claim 23
Dependent Claim
14 words
The method of claim 17, wherein said abrasive member is substantially within the catheter.
Claim 24
Dependent Claim
26 words
The method of claim 17, further comprising the step of monitoring the extent of removal of stenotic material concurrent with or subsequent to the abrasion process.
Claim 25
Independent Claim
74 words
A method for removing the stenotic material from a patient's vascular system comprising the steps of: introducing a catheter having an abrasive member into the vascular system; contacting the stenotic material with said abrasive member, whereby the stenotic material is abraded and collected by the catheter; and monitoring the extent of removal of stenotic material by ultrasound using an ultrasonic transducer mounted on the abrasive member, concurrent with or subsequent to the abrasion process.
Claim 26
Independent Claim
74 words
A method for removing the stenotic material from a patient's vascular system comprising the steps of: introducing a catheter having an abrasive member into the vascular system; contacting the stenotic material with said abrasive member, whereby the stenotic material is abraded and collected by the catheter; and monitoring the extent of removal of stenotic material by ultrasound using an ultrasonic transducer mounted on the abrasive member, concurrent with or subsequent to the abrasion process.
Claim 27
Independent Claim
89 words
A method for removing the stenotic material from a patient's vascular system comprising the steps of: introducing a catheter having an abrasive member into the vascular system; contacting the stenotic material that penetrates an aperture in the catheter with said abrasive member, whereby the stenotic material is abraded; collecting abraded stenotic material by means of flushing and aspiration within the catheter; and monitoring the extent of removal of stenotic material by ultrasound using an ultrasonic transducer mounted on the abrasive member, concurrent with or subsequent to the abrasion process.
Claim 28
Independent Claim
89 words
A method for removing the stenotic material from a patient's vascular system comprising the steps of: introducing a catheter having an abrasive member into the vascular system; contacting the stenotic material that penetrates an aperture in the catheter with said abrasive member, whereby the stenotic material is abraded; collecting abraded stenotic material by means of flushing and aspiration within the catheter; and monitoring the extent of removal of stenotic material by ultrasound using an ultrasonic transducer mounted on the abrasive member, concurrent with or subsequent to the abrasion process.
Claim 29
Dependent Claim
21 words
The method of claim 21, wherein the abraded stenotic material is collected by means of flushing and aspiration within the catheter.
Claim 30
Independent Claim
80 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter into the vascular system, said catheter having an abrasive member, a housing, and means for urging the abrasive member against the stenotic material; urging the abrasive member against the stenotic material by using said means for urging in cooperation with the housing; and contacting the stenotic material with said abrasive member, whereby the stenotic material is abraded and collected by the catheter.
Claim 31
Independent Claim
80 words
A method for removing stenotic material from a patient's vascular system comprising the steps of: introducing a catheter into the vascular system, said catheter having an abrasive member, a housing, and means for urging the abrasive member against the stenotic material; urging the abrasive member against the stenotic material by using said means for urging in cooperation with the housing; and contacting the stenotic material with said abrasive member, whereby the stenotic material is abraded and collected by the catheter.
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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) | 1999-04-16 | 1999-10-16 | 2000-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-16 | 2003-10-16 | 2004-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-16 | 2007-10-16 | 2008-04-16 | $7700.00 | Window Closed / Lapsed |