US5976155A
Expired / Lapsed
US
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System for removably securing a stent on a catheter assembly and method of use
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1999-03-05
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Granted: 1999-11-02
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Expires: 2019-03-05
Abstract
Abstract The invention is directed to a system for removably securing a stent which generally includes an expandable member of a catheter assembly, the expandable member having outwardly extending protrusions. An expandable stent is crimped onto the expandable member such that the protrusions extend into the gaps in the stent. The stent is secured in place on the expandable member while advancing the system through tortuous body lumen passages. The stent is implanted at the desired location in the body lumen by inflating the expandable member and thereby expanding the stent into the body lumen. The protrusions are pulled away from and out of the stent gaps by deflating the expandable member and retracting the remainder of the system.
Inventors
- 👤 Philip C. Foreman
- 👤 Timothy A. Limon
- 👤 Richard J. Saunders
- 👤 Bjorn G. Svensson
- 👤 II Gregory W. Teaby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:58
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61F; A61F2/00; A61F2/95; A61F2/958; A61F2002/9583; A61M2025/1043; A61M2025/1086
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
84 words
A catheter assembly removably securing an expandable stent for delivering and implanting within a body lumen, comprising: an expandable member disposed at a distal section of a catheter, the expandable member configured as an elongated cylinder defining an inner surface and an outer surface; and at least one protrusion disposed on the outer surface of the expandable member and extending radially outwardly therefrom; whereby an expandable stent is tightly crimped onto the outer surface of the expandable member and the at least one protrusion.
Claim 2
Dependent Claim
84 words
A catheter assembly removably securing an expandable stent for delivering and implanting within a body lumen, comprising: an expandable member disposed at a distal section of a catheter, the expandable member configured as an elongated cylinder defining an inner surface and an outer surface; and at least one protrusion disposed on the outer surface of the expandable member and extending radially outwardly therefrom; whereby an expandable stent is tightly crimped onto the outer surface of the expandable member and the at least one protrusion.
Claim 3
Dependent Claim
49 words
The catheter assembly of claim 1, wherein the expandable stent comprises a lattice configuration defining gaps in the expandable stent, the expandable stent being tightly crimped about the outer surface of the expandable member so that the at least one protrusion extends into the gaps in the expandable stent.
Claim 4
Dependent Claim
34 words
The catheter assembly of claim 2, wherein a plurality of protrusions are configured in at least one radial pattern about the outer surface of the expandable member corresponding to the gaps in the stent.
Claim 5
Dependent Claim
36 words
The catheter assembly of claim 2, wherein a plurality of protrusions are configured in at least one axially parallel linear pattern along the outer surface of the expandable member corresponding to the gaps in the stent.
Claim 6
Dependent Claim
48 words
The catheter assembly of claim 2, wherein the expandable stent has an inner surface and an outer surface defining a thickness therebetween, and the at least one protrusion extends outwardly from the outer surface of the expandable member a distance substantially equal to the thickness of the stent.
Claim 7
Dependent Claim
49 words
The catheter assembly of claim 2, wherein the gaps in the stent form predetermined shapes and the at least one protrusion being configured to fill the shapes so that the catheter assembly has a relatively smooth surface at the location of the stent and the at least one protrusion.
Claim 8
Dependent Claim
14 words
The catheter assembly of claim 1, wherein the expandable member is an inflatable balloon.
Claim 9
Dependent Claim
16 words
The catheter assembly of claim 1, wherein the catheter is configured as an over-the-wire intravascular catheter.
Claim 10
Dependent Claim
17 words
The catheter assembly of claim 1, wherein the catheter is configured as a rapid exchange intravascular catheter.
Claim 11
Dependent Claim
15 words
The catheter assembly of claim 1, wherein the catheter is configured as a monorail catheter.
Claim 12
Dependent Claim
17 words
The assembly of claim 1, wherein the at least one protrusion is formed from an adhesive material.
Claim 13
Dependent Claim
17 words
The assembly of claim 1, wherein the at least one protrusion is formed from a curable material.
Claim 14
Dependent Claim
17 words
The assembly of claim 1, wherein the at least one protrusion is integral with the expandable member.
Claim 15
Independent Claim
132 words
A method of removably securing an expandable stent mounted on a catheter assembly, comprising: providing an expandable member disposed at a distal section of a catheter, the expandable member configured as an elongated cylinder defining an inner surface and an outer surface; providing an expandable stent having a lattice configuration defining gaps within the stent; aligning the stent about the expandable member; adhering a material to the outer surface of the expandable member so that the material forms at least one protrusion extending radially outwardly from the outer surface of the expandable member; and crimping the expandable stent onto the outer surface of the expandable member such that the at least one protrusion extends into the gap(s) in the expandable stent; whereby the expandable stent is removably secured on the expandable member.
Claim 16
Independent Claim
132 words
A method of removably securing an expandable stent mounted on a catheter assembly, comprising: providing an expandable member disposed at a distal section of a catheter, the expandable member configured as an elongated cylinder defining an inner surface and an outer surface; providing an expandable stent having a lattice configuration defining gaps within the stent; aligning the stent about the expandable member; adhering a material to the outer surface of the expandable member so that the material forms at least one protrusion extending radially outwardly from the outer surface of the expandable member; and crimping the expandable stent onto the outer surface of the expandable member such that the at least one protrusion extends into the gap(s) in the expandable stent; whereby the expandable stent is removably secured on the expandable member.
Claim 17
Dependent Claim
53 words
The method of claim 14, wherein adhering the material to the outer surface of the expandable member further comprises: providing a cylinder of elastomeric material having at least one integral protrusion extending radially outward; disposing the cylinder about the outer surface of the expandable member; and heat-shrinking the cylinder onto the expandable member.
Claim 18
Dependent Claim
20 words
The method of claim 14, wherein the material is cured after application onto the outer surface of the expandable member.
Claim 19
Independent Claim
113 words
A method of removably securing an expandable stent on a catheter assembly, comprising: providing an expandable member at a distal section of a catheter and having an inner surface and an outer surface with a plurality of integral protrusions extending outwardly from the outer surface of the expandable member; providing an expandable stent having a lattice configuration defining gaps in the stent; aligning the stent about the expandable member; and tightly crimping the expandable stent onto the outer surface of the expandable member such that at least some of the protrusions extend into at least some of the gaps in the expandable member thereby removably retaining the expandable stent on the expandable member.
Claim 20
Independent Claim
113 words
A method of removably securing an expandable stent on a catheter assembly, comprising: providing an expandable member at a distal section of a catheter and having an inner surface and an outer surface with a plurality of integral protrusions extending outwardly from the outer surface of the expandable member; providing an expandable stent having a lattice configuration defining gaps in the stent; aligning the stent about the expandable member; and tightly crimping the expandable stent onto the outer surface of the expandable member such that at least some of the protrusions extend into at least some of the gaps in the expandable member thereby removably retaining the expandable stent on the expandable member.
Claim 21
Independent Claim
101 words
A method of removably securing an expandable stent on a catheter assembly, comprising: providing an expandable member shaped as an elongated cylinder defining an inner surface and an outer surface; providing an expandable stent having a lattice configuration defining gaps in the stent; crimping the stent onto the expandable member; and coating the expandable member and stent with an adhesive such that the material substantially fills the gaps in the stent and the material adheres to the outer surface of the expandable member thereby forming protrusions on the expandable member; whereby the expandable stent is removably secured on the expandable member.
Claim 22
Independent Claim
101 words
A method of removably securing an expandable stent on a catheter assembly, comprising: providing an expandable member shaped as an elongated cylinder defining an inner surface and an outer surface; providing an expandable stent having a lattice configuration defining gaps in the stent; crimping the stent onto the expandable member; and coating the expandable member and stent with an adhesive such that the material substantially fills the gaps in the stent and the material adheres to the outer surface of the expandable member thereby forming protrusions on the expandable member; whereby the expandable stent is removably secured on the expandable member.
Claim 23
Independent Claim
138 words
A method of delivering and implanting expandable stent at a desired location within a body lumen, the method comprising: providing a catheter assembly having an expandable member shaped as an elongated cylinder defining an inner surface and an outer surface and having a plurality of protrusions extending radially outwardly from the outer surface; providing an expandable stent having a lattice configuration defining gaps in the stent; crimping the stent onto the expandable member so that the protrusions extend into the gaps in the expandable stent; advancing the catheter assembly through the body lumen to the desired location; inflating the expandable member thereby expanding and implanting the expandable stent at the desired location; deflating the expandable member so that the protrusions no longer extend into the gaps in the stent; and withdrawing the catheter assembly from the body lumen.
Claim 24
Independent Claim
138 words
A method of delivering and implanting expandable stent at a desired location within a body lumen, the method comprising: providing a catheter assembly having an expandable member shaped as an elongated cylinder defining an inner surface and an outer surface and having a plurality of protrusions extending radially outwardly from the outer surface; providing an expandable stent having a lattice configuration defining gaps in the stent; crimping the stent onto the expandable member so that the protrusions extend into the gaps in the expandable stent; advancing the catheter assembly through the body lumen to the desired location; inflating the expandable member thereby expanding and implanting the expandable stent at the desired location; deflating the expandable member so that the protrusions no longer extend into the gaps in the stent; and withdrawing the catheter assembly from the body lumen.
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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) | 2002-11-01 | 2003-05-03 | 2003-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-01 | 2007-05-03 | 2007-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-01 | 2011-05-03 | 2011-11-02 | $7700.00 | Window Closed / Lapsed |