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US6306151B1
Expired / Lapsed
US
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Balloon with reciprocating stent incisor
Assignee: Lary Research And Development LLC
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Filing: 1999-03-30
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Granted: 2001-10-23
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Expires: 2019-03-30
Abstract
Abstract A medical instrument which is insertable into a vascular system to incise a stent embedded within a stenosis is provided herein and includes a multi-luminal catheter with a distal expandable balloon mounted with a reciprocating cutting member. The cutting member is selectively activated by an external reciprocating mechanism which is transmitted through the catheter to the cutting member mounted on the balloon's surface. The cutting member is designed to have the characteristics necessary to cut the metallic struts of a stent. In operation, the device is placed within the stenosis having an embedded stent and the expandable balloon is inflated. Preferably, the cutting member will be facing the myocardium. Then reciprocating motion is activated and the cutting member proceeds to sever the struts of the stent and make an incision in the stenosis. It is anticipated that more than one cutting member may be mounted on the balloon's surface.
Inventors
- 👤 Banning G. Lary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:59
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61B17/22; A61B2017/22051; A61B2017/22061; A61F; A61F2/00; A61F2/95
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
123 words
A device insertable into a vessel for cutting a stent implanted into stenotic tissue comprising: a catheter including a body portion, a proximal end, and a distal end, said catheter defining a longitudinal axis and an expandable balloon at said distal end, said expandable balloon having an inner surface and an outer surface, said balloon being in fluid communication with a balloon inflation and deflation means; a retaining means affixed to said outer surface of said expandable balloon; a cutting member for incising a stent implanted in stenotic tissue comprising a transmitting shaft engaged to a cutting means, said cutting member being reciprocatable along an axis substantially parallel to said longitudinal axis, a portion of said cutting member located within said retaining means.
Claim 2
Independent Claim
123 words
A device insertable into a vessel for cutting a stent implanted into stenotic tissue comprising: a catheter including a body portion, a proximal end, and a distal end, said catheter defining a longitudinal axis and an expandable balloon at said distal end, said expandable balloon having an inner surface and an outer surface, said balloon being in fluid communication with a balloon inflation and deflation means; a retaining means affixed to said outer surface of said expandable balloon; a cutting member for incising a stent implanted in stenotic tissue comprising a transmitting shaft engaged to a cutting means, said cutting member being reciprocatable along an axis substantially parallel to said longitudinal axis, a portion of said cutting member located within said retaining means.
Claim 3
Dependent Claim
28 words
The device as recited in claim 1 wherein said expandable balloon prevents said cutting means from contacting said tissue when said expandable balloon is in a contracted configuration.
Claim 4
Dependent Claim
23 words
The device as recited in claim 1 wherein said retaining means comprises a channel with a restricting means to contain said cutting means.
Claim 5
Dependent Claim
22 words
The device as recited in claim 3 wherein said restricting means comprises a channel shaped with a void representing a “T” shape.
Claim 6
Dependent Claim
21 words
The device as recited in claim 3 further comprising a pair of detents located on terminal ends of the restricting means.
Claim 7
Dependent Claim
17 words
The device as recited in claim 1 wherein said cutting means is configured in a “T” shape.
Claim 8
Dependent Claim
17 words
The device as recited in claim 1 , wherein said cutting means is fabricated from a metal.
Claim 9
Dependent Claim
18 words
The device as recited in claim 1 , wherein said cutting means is fabricated from a rigid polymer.
Claim 10
Dependent Claim
17 words
The device as recited in claim 1 , wherein said cutting means has one or more teeth.
Claim 11
Dependent Claim
132 words
An insertable catheter device for incising a stent implanted within a stenosis in a vessel, said device usable in conjunction with a standard guide wire, said device comprising: a catheter including a body portion, a proximal end, and a distal end, said catheter defining a longitudinal axis and an expandable balloon at said distal end, said expandable balloon having an inner surface and an outer surface, said balloon being in fluid communication with a balloon inflation and deflation means; a retaining means affixed to said outer surface of said expandable balloon; a cutting member for incising a stent implanted in stenotic tissue having a transmitting shaft engaged to said cutting member being reciprocatable along an axis substantially parallel to said longitudinal axis, said cutting member being located entirely within said retaining means.
Claim 12
Dependent Claim
132 words
An insertable catheter device for incising a stent implanted within a stenosis in a vessel, said device usable in conjunction with a standard guide wire, said device comprising: a catheter including a body portion, a proximal end, and a distal end, said catheter defining a longitudinal axis and an expandable balloon at said distal end, said expandable balloon having an inner surface and an outer surface, said balloon being in fluid communication with a balloon inflation and deflation means; a retaining means affixed to said outer surface of said expandable balloon; a cutting member for incising a stent implanted in stenotic tissue having a transmitting shaft engaged to said cutting member being reciprocatable along an axis substantially parallel to said longitudinal axis, said cutting member being located entirely within said retaining means.
Claim 13
Dependent Claim
28 words
The device as recited in claim 10 wherein said expandable balloon prevents said cutting means from contacting said tissue when said expandable balloon is in a contracted configuration.
Claim 14
Dependent Claim
33 words
The device as recited in claim 10 wherein said retaining means comprises a channel with a restricting means to contain said cutting means, said restricting means having a distal and proximal terminal end.
Claim 15
Dependent Claim
22 words
The device as recited in claim 12 wherein said restricting means comprises a channel shaped with a void representing a “T” shape.
Claim 16
Dependent Claim
22 words
The device as recited in claim 12 further comprising a pair of detents located on the terminal ends of the restricting means.
Claim 17
Dependent Claim
18 words
The device as recited in claim 10 , wherein said cutting means is configured in a “T” shape.
Claim 18
Dependent Claim
17 words
The device as recited in claim 10 , wherein said cutting means is fabricated from a metal.
Claim 19
Dependent Claim
17 words
The device as recited in claim 10 , said cutting means is fabricated from a rigid polymer.
Claim 20
Dependent Claim
16 words
The device as recited in claim 10 , wherein said cutting means has one more teeth.
Claim 21
Dependent Claim
24 words
The device as recited in claim 10 , wherein said catheter includes a guide wire lumen extending along the longitudinal length of said catheter.
Claim 22
Dependent Claim
26 words
The device as recited in claim 10 , wherein said catheter includes a relatively short guide wire lumen located near the distal end of said catheter.
Claim 23
Independent Claim
236 words
A method of reducing the flow restriction resulting from a stent implanted stenosis in a vessel comprising the steps of: inserting a guide wire in a vessel of a human being and moving said guide wire along said vessel until said guide wire has passed said stenosis; placing a stent cutting catheter device on said wire, said catheter device comprising a body portion, a proximal end and a distal end, said catheter device also defining a longitudinal axis and having a expandable balloon at said distal end, said expandable balloon having an outer surface, said balloon being in fluid communication with a balloon inflation and deflation means, a retaining means affixed to said outer surface of said expandable balloon, and a cutting member for incising a stent implanted in stenotic tissue comprising a transmitting shaft engaged to a cutting means, said cutting member being reciprocatable along an axis substantially parallel to said longitudinal axis, a portion of said cutting member located within said retaining means; moving said catheter device along said wire until said catheter device is adjacent said stenosis; inflating said expandable balloon on said catheter to engage said cutting means to the stenotic tissue containing said stent; activating a reciprocatable motion to said transmitting shaft such that said cutting means longitudinally incises said stent and said stenosis; and deflating said expandable balloon and removing said catheter device and said guide wire from said vessel.
Claim 24
Independent Claim
236 words
A method of reducing the flow restriction resulting from a stent implanted stenosis in a vessel comprising the steps of: inserting a guide wire in a vessel of a human being and moving said guide wire along said vessel until said guide wire has passed said stenosis; placing a stent cutting catheter device on said wire, said catheter device comprising a body portion, a proximal end and a distal end, said catheter device also defining a longitudinal axis and having a expandable balloon at said distal end, said expandable balloon having an outer surface, said balloon being in fluid communication with a balloon inflation and deflation means, a retaining means affixed to said outer surface of said expandable balloon, and a cutting member for incising a stent implanted in stenotic tissue comprising a transmitting shaft engaged to a cutting means, said cutting member being reciprocatable along an axis substantially parallel to said longitudinal axis, a portion of said cutting member located within said retaining means; moving said catheter device along said wire until said catheter device is adjacent said stenosis; inflating said expandable balloon on said catheter to engage said cutting means to the stenotic tissue containing said stent; activating a reciprocatable motion to said transmitting shaft such that said cutting means longitudinally incises said stent and said stenosis; and deflating said expandable balloon and removing said catheter device and said guide wire from said vessel.
Claim 25
Dependent Claim
29 words
The method as recited in claim 21 further comprising aligning said cutting means prior to activating said reciprocatable motion so that said cutting means is directed towards myocardial tissues.
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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) | 2004-10-22 | 2005-04-23 | 2005-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-10-22 | 2009-04-23 | 2009-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-10-22 | 2013-04-23 | 2013-10-23 | $7700.00 | Window Closed / Lapsed |