EP0819411A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Self-expanding stent delivery system
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1997-03-10
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Granted: —
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Expires: 2017-03-10
Abstract
Abstract A stent-delivery catheter system delivers and implants a self-expanding stent intraluminally into the body lumen of a human patient. A self-expanding stent is removabaly attached to the distal end of an inner member so that attachment projections prevent axial movement of the stent on the inner member while the stent is being delivered and implanted in the body lumen.
Inventors
- 👤 Timothy A. Limon
- 👤 Richard J. Saunders
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 10:50
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/9522; A61F2/958; A61F2002/9583; A61F2/962; A61F2/966; A61F2002/9665; A61F2210/00; A61F2210/0014; A61F2210/0023; A61F2210/0033; A61M; A61M25/00; A61M25/01; A61M2025/0183
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
133 words
A catheter assembly (20) for removably attaching an intravascular stent to a delivery catheter, comprising: an elongated catheter (21) having a proximal end (22) and a distal end (23); the catheter having an inner member (24) and an outer member (25) extending along a longitudinal axis, the inner member and the outer member having a coaxial configuration and dimensioned for relative axial movement; means for providing relative axial movement between the inner member and the outer member; a self-expanding stent (28) having an open lattice structure (29), the stent being biased toward an open configuration and being positioned within a distal end (23) of the outer member (25); and means for conforming a distal end (32) of the inner member (24) to removably attach the stent to the inner member distal end (32).
Claim 2
Dependent Claim
43 words
The catheter assembly of claim 1, wherein the means for conforming the distal end (32) of the inner member (24) to removably attach the stent, includes a plurality of attachment projections (30) formed from the inner member (24) having a heat-deformable polymeric material.
Claim 3
Dependent Claim
35 words
The catheter assembly of claim 2, wherein the polymeric material on the distal end (32) of the inner member (24) is taken from the group of polymeric materials consisting of polyurethanes, polyethylenes, polyethylterpthalate, and nylons.
Claim 4
Dependent Claim
41 words
The catheter assembly of any of the preceding claims, wherein the means for providing relative axial movement between the inner member and the outer member includes a control handle (26,27) positioned at the proximal end (22) of the elongated catheter (21).
Claim 5
Dependent Claim
35 words
The catheter assembly of any of the precending claims, wherein the self-expanding stent (28) is formed from a metal alloy taken from the group of metal alloys consisting essentially of stainless steel, nickel-titanium, and tantalum.
Claim 6
Dependent Claim
48 words
The catheter assembly of any of the preceding claims, wherein the inner member (24) of the elongated catheter (21) has a through-lumen (51) for receiving a guide wire (52) so that the elongated catheter can be positioned within a body lumen by advancing it over the guide wire.
Claim 7
Dependent Claim
42 words
The catheter assembly of any of the preceding claims, wherein the inner member (24) of the elongated catheter has a side port (62) for receiving a guide wire (52), the side port being positioned so that the catheter can be rapidly exchanged.
Claim 8
Dependent Claim
51 words
The catheter assembly of any of the preceding claims, wherein the distal end (23) of the elongated catheter includes a polymeric sleeve (40) attached to the distal end (23), the polymeric sleeve adapted to conform and fill the lattice structure of the self-expanding stent with a plurality of attachment projections (30).
Claim 9
Independent Claim
161 words
A method of mounting an intravascular stent on a delivery catheter, the method comprising: providing a delivery catheter having an elongated catheter body (21) and a proximal end (22) and a distal end (23), the catheter having an inner member (24) and an outer member (25) extending along a longitudinal axis, the inner member and the outer member having a coaxial configuration and dimensioned for relative axial movement, and control handles (26,27) for providing relative axial movement between the inner member and the outer member; positioning a self-expanding stent (28) within an inner lumen (31) of the outer member (25); manipulating the control handles to slide the inner member distal end within an inner lumen (34) of the self-expanding stent; and heating the inner member distal end (32) so that it conforms and fills the open lattice structure of the self-expanding stent with a plurality of attachment projections (30), thereby removably attaching the self-expanding stent to the inner member distal end.
Claim 10
Independent Claim
172 words
A method of implanting a self-expanding stent (10) in a body lumen, the method comprising: providing an elongated catheter (21) having a proximal end (22) and a distal end, the catheter having an inner member and an outer member extending along a longitudinal axis (24), the inner member and the outer member having a coaxial configuration and dimensioned for relative axial movement, control handles (26,27) for providing relative axial movement between the inner member and the outer member and a self-expanding stent mounted on a distal end of the inner member with the distal end of the outer member forming a sheath around the self-expanding stent; manipulating the control handles to simultaneously move the inner member axially in a distal direction and the outer member axially in a proximal direction; deploying the stent by permitting it to self-expand radially outwardly into contact with the body lumen while preventing axial movement of the stent on the catheter by providing a plurality of attachment projections (30); and withdrawing the catheter from the body lumen.
Claim 11
Dependent Claim
152 words
The method of implanting a stent (10) of claim 10, the method further comprising: positioning the distal end (23) of the catheter (21) at the site for implanting the stent; manipulating the control handles to simultaneously move the inner member axially in a distal direction and the outer member axially in a proximal direction to begin implanting the stent; manipulating the control handles (26,27) to simultaneously move the inner member (24) axially in a proximal direction and the outer member (25) axially in a distal direction to recapture the stent and to position the stent on the inner member distal end; repositioning the catheter distal end to implant the stent; manipulating the control handles to simultaneously move the inner member axially in a distal direction and the outer member axially in the proximal direction to release the stent to self-expand in the body lumen; and withdrawing the catheter from the body lumen.
Claim 12
Independent Claim
152 words
A method of implanting a self-expanding stent (10) in a body lumen, the method comprising: providing an elongated catheter (21) having a proximal end (22) and a distal end (23), the catheter having an inner member (24) and an outer member (25) extending along a longitudinal axis, the inner member and the outer member having a coaxial configuration and dimension for relative axial movement, control handles (26,27) for providing relative axial movement between the inner member and the outer member and a self-expanding stent mounted on a distal end of the inner member with the distal end of the outer member forming a sheath around the self-expanding stent; manipulating the control handles to move the outer member axially in a proximal direction while maintaining the inner member stationary; deploying the stent by permitting it to self-expand radially outwardly into contact with the body lumen; and withdrawing the catheter from the body lumen.
Claim 13
Dependent Claim
106 words
The method of implanting a stent (10) of claim 12, the method further comprising: positioning the distal end (23) of the catheter at the site for implanting the stent; manipulating the control handles (26,27) to simultaneously move the inner member axially in a proximal direction and the outer member axially in a distal direction to recapture the stent; repositioning the catheter distal end to implant the stent; manipulating the control handles to move the outer member axially in the proximal direction to release the stent to self-expand in the body lumen while simultaneously molding the inner member stationary; and withdrawing the catheter from the body lumen.
References Cited (Backward Citations)
No citation records indexed.
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