Patent US2549826A successfully refreshed from Google Patents.
US6620191B1
Expired / Lapsed
US
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System for releasably securing a stent on a catheter assembly and method of use
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 2001-03-27
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Granted: 2003-09-16
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Expires: 2021-03-27
Abstract
Abstract The invention is directed to an improvement in stent delivery systems and method for releasably securing a stent onto an expandable member of a catheter. A deformable material is applied between the outer surface of the expandable member and the stent mounted thereon. The deformable material is affixed to an expandable member, similar to a dilatation balloon and is sufficiently compliant to be deformed by compressive engagement with the stent. The deformable material beneath the stent is compressed, projecting a portion of the material adjacent struts of the stent into a physical stop that impedes lateral movement of the stent relative to the balloon during delivery to the target site. The deformable material may be an adhesive or a curable compound in a cured or uncured state. The deformable material may be brought into releasably secure contact with the stent by shifting the stent toward the balloon, the balloon toward the stent, or both. Shifting the stent toward the balloon may include crimping the stent.
Inventors
- 👤 Björn G. Svensson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:32
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/95; A61F2/958; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/075; A61F2002/9583
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
124 words
A catheter assembly for releasably securing a stent during delivery and implanting within a body lumen, comprising: an elongated catheter having an expandable member disposed at a distal section of the catheter, the expandable member including a peripheral wall defining an inner surface and an outer surface; a layer of deformable material affixed to at least a portion of the outer surface; and the stent positioned about the expandable member and crimped into releasably compressing engagement with the layer of deformable material to cause a segment of the layer to form at least one physical stop to restrict movement of the stent relative to the expandable member during delivery of the stent in an unexpanded state to the desired location in the body lumen.
Claim 2
Dependent Claim
124 words
A catheter assembly for releasably securing a stent during delivery and implanting within a body lumen, comprising: an elongated catheter having an expandable member disposed at a distal section of the catheter, the expandable member including a peripheral wall defining an inner surface and an outer surface; a layer of deformable material affixed to at least a portion of the outer surface; and the stent positioned about the expandable member and crimped into releasably compressing engagement with the layer of deformable material to cause a segment of the layer to form at least one physical stop to restrict movement of the stent relative to the expandable member during delivery of the stent in an unexpanded state to the desired location in the body lumen.
Claim 3
Dependent Claim
15 words
The catheter assembly of claim 1 , wherein the layer of deformable material is curable.
Claim 4
Dependent Claim
46 words
The catheter assembly of claim 1 , wherein the stent is formed by a wall of a lattice configuration defining stent struts with gaps therebetween and wherein at least a portion of at least one of the struts is compressed into the layer of deformable material.
Claim 5
Dependent Claim
28 words
The catheter assembly of claim 3 , wherein the at least one stop is formed by projection of the compressed deformable material from beneath the compressed stent strut.
Claim 6
Dependent Claim
28 words
The catheter assembly of claim 4 , wherein at least a portion of a layer of uncompressed deformable material is forced into at least one of the gaps.
Claim 7
Dependent Claim
32 words
The catheter assembly of claim 4 , wherein the struts are compressed sufficiently in the layer of deformable material to form a smoothed outer surface of the distal end of the assembly.
Claim 8
Dependent Claim
38 words
The catheter assembly of claim 1 , wherein the expandable member includes an inflatable balloon constructed with at least one fold, the fold having a peripheral edge, and the layer of deformable material is applied on the edge.
Claim 9
Dependent Claim
53 words
The catheter assembly of claim 7 , wherein the edge includes a longitudinal proximal, mid, and distal portion and wherein the deformable material is applied in a linear pattern of at least three dots, at least one of the dots is affixed to the proximal, middle, and distal portions respectively of the edge.
Claim 10
Dependent Claim
16 words
The catheter assembly of claim 1 , wherein the layer of deformable material includes polymeric foam.
Claim 11
Dependent Claim
21 words
The catheter of claim 1 , wherein the layer of deformable material has a thickness no greater than about 1.0 mm.
Claim 12
Dependent Claim
20 words
The catheter assembly of claim 1 , wherein the layer of deformable material covers less than the entire outer surface.
Claim 13
Dependent Claim
16 words
The catheter assembly of claim 1 , wherein the layer of deformable material is a polymer.
Claim 14
Dependent Claim
16 words
The catheter assembly of claim 1 , wherein the layer of deformable material is UV-curable polyurethane.
Claim 15
Dependent Claim
22 words
The catheter assembly of claim 1 , wherein the layer of deformable material is soft, flexible and exhibits a sticky outer surface.
Claim 16
Dependent Claim
27 words
The catheter assembly of claim 1 , wherein the layer of deformable material is configured as a longitudinal bead affixed to the surface of the expandable member.
Claim 17
Dependent Claim
16 words
The catheter assembly of claim 1 , wherein the layer of deformable material is an adhesive.
Claim 18
Dependent Claim
30 words
The catheter assembly of claim 1 , wherein an adhesive bond formed between the stent and the deformable material is broken when the expandable member is inflated and then deflated.
Claim 19
Independent Claim
111 words
A method of releasably securing a stent mounted on a catheter assembly, comprising: providing an expandable member disposed at a distal section of a catheter, the expandable member including a peripheral wall defining an inner surface and an outer surface and a deformable material affixed to the outer surface of the peripheral wall; providing the expandable stent; positioning the stent about the expandable member; and crimping the stent into compressing engagement with a portion of the material to form at least one stop to restrict movement of the stent relative to the expandable member during delivery of the stent in an unexpanded state to a desired location in a body lumen.
Claim 20
Independent Claim
111 words
A method of releasably securing a stent mounted on a catheter assembly, comprising: providing an expandable member disposed at a distal section of a catheter, the expandable member including a peripheral wall defining an inner surface and an outer surface and a deformable material affixed to the outer surface of the peripheral wall; providing the expandable stent; positioning the stent about the expandable member; and crimping the stent into compressing engagement with a portion of the material to form at least one stop to restrict movement of the stent relative to the expandable member during delivery of the stent in an unexpanded state to a desired location in a body lumen.
Claim 21
Dependent Claim
12 words
The method of claim 18 , wherein the deformable material is curable.
Claim 22
Dependent Claim
15 words
The method of claim 19 , wherein the material is cured before crimping the stent.
Claim 23
Dependent Claim
15 words
The method of claim 19 , wherein the material is cured after crimping the stent.
Claim 24
Dependent Claim
46 words
The method of claim 18 , wherein the stent is formed with a tubular wall having a lattice configuration defining struts with gaps therebetween and wherein crimping the stent includes crimping at least one of the struts into compressing engagement with a portion of the material.
Claim 25
Dependent Claim
29 words
The method of claim 22 , wherein the deformable material is compressed to project material in at least one of the gaps to form the at least one stop.
Claim 26
Dependent Claim
26 words
The method of claim 22 , wherein the deformable material is compressed to form at least one stop adjacent to at least one of the struts.
Claim 27
Dependent Claim
13 words
The method of claim 18 , wherein the deformable material is an adhesive.
Claim 28
Dependent Claim
33 words
The method of claim 25 , wherein an adhesive bond is formed between the deformable material and the stent and the bond is broken when the expandable member is inflated and then deflated.
Claim 29
Independent Claim
154 words
A method of delivering and implanting an expandable stent at a desired location in a body lumen, comprising: providing a catheter assembly having an expandable member defining an inner surface and an outer surface and having a deformable material affixed to the outer surface; providing a stent; positioning the stent coaxially about the expandable member; crimping the stent onto the expandable member and into compressing engagement with the deformable material to form at least one stop to block longitudinal movement of the stent relative to the expandable member during intraluminal delivery to the desired location in the body lumen; advancing the catheter assembly through the body lumen to the desired location with the stent secured thereon; inflating the expandable member to expand and implant the stent at the desired location; deflating the expandable member to break the engagement between the stent and the deformable material; and withdrawing the catheter assembly from the body lumen.
Claim 30
Independent Claim
154 words
A method of delivering and implanting an expandable stent at a desired location in a body lumen, comprising: providing a catheter assembly having an expandable member defining an inner surface and an outer surface and having a deformable material affixed to the outer surface; providing a stent; positioning the stent coaxially about the expandable member; crimping the stent onto the expandable member and into compressing engagement with the deformable material to form at least one stop to block longitudinal movement of the stent relative to the expandable member during intraluminal delivery to the desired location in the body lumen; advancing the catheter assembly through the body lumen to the desired location with the stent secured thereon; inflating the expandable member to expand and implant the stent at the desired location; deflating the expandable member to break the engagement between the stent and the deformable material; and withdrawing the catheter assembly from the body lumen.
Claim 31
Dependent Claim
13 words
The method of claim 27 , wherein the deformable material is an adhesive.
Claim 32
Dependent Claim
55 words
The method of claim 27 , wherein the stent is of the type formed in a tubular lattice configuration with a wall defined by stent struts with gaps therebetween and wherein at least a portion of the at least one of the struts is compressed into the deformable material to form at least one stop.
Claim 33
Dependent Claim
12 words
The method of claim 27 , wherein the deformable material is curable.
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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) | 2006-09-15 | 2007-03-17 | 2007-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-09-15 | 2011-03-17 | 2011-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-09-15 | 2015-03-17 | 2015-09-16 | $7700.00 | Window Closed / Lapsed |