US6517547B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent delivery system
Assignee: Angiomed GmbH and Co Medizentechnik KG
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Filing: 2000-08-11
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Granted: 2003-02-11
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Expires: 2020-08-11
Abstract
Abstract The present invention relates to a stent delivery system comprising a catheter tube defining for a self-expanding stent a bed having a length direction in line with the catheter length, a radially outward facing stent-receiving surface, a distal end at or near the distal end of the catheter and a proximal end spaced proximally from the distal end; an outer catheter tube to circumferentially surround the bed; and the outer tube being arranged to be withdrawn proximally to release the self-expanding stent radially outwardly from the bed; and further comprising: on the stent receiving bed surface, immediately distal of the proximal end of the bed, a first pinch zone; on the outer tube, at or near a distal end thereof, and on its radially inwardly facing surface, a second pinch zone; the first and second pinch zones facing each other when the distal end of the outer tube is not quite fully withdrawn proximally, relative to the bed; the facing of the opposed first and second pinch zones defining a reduced-width annulus for pinching the proximal end of the stent to make available increased resistance to relative axial movement between the stent and the catheter shaft just prior to full withdrawal of the outer tube.
Inventors
- 👤 Joerg Feeser
- 👤 Lars Schendzielorz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/962; A61F2/966
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
169 words
A delivery catheter for a self-expanding stent having proximal and distal ends, the catheter having proximal and distal ends, comprising: an inner member having a bed with a radially outward facing surface, the bed being disposed at or near the distal end of the catheter; an outer catheter tube circumferentially surrounding the bed; and the outer tube being arranged to be withdrawn proximally to release a self-expanding stent contained in the outer catheter tube radially outwardly; the bed surface defining a first pinch zone; a second pinch zone defined on the radially inwardly facing surface of the outer tube; the first and second pinch zones facing each other when the distal end of the outer tube is not quite fully withdrawn proximally, relative to the bed; the facing first and second pinch zones defining a reduced-width annulus for pinching a proximal end of the stent to make available increased resistance to relative axial movement between the stent and the catheter just prior to full withdrawal of the outer tube.
Claim 2
Dependent Claim
169 words
A delivery catheter for a self-expanding stent having proximal and distal ends, the catheter having proximal and distal ends, comprising: an inner member having a bed with a radially outward facing surface, the bed being disposed at or near the distal end of the catheter; an outer catheter tube circumferentially surrounding the bed; and the outer tube being arranged to be withdrawn proximally to release a self-expanding stent contained in the outer catheter tube radially outwardly; the bed surface defining a first pinch zone; a second pinch zone defined on the radially inwardly facing surface of the outer tube; the first and second pinch zones facing each other when the distal end of the outer tube is not quite fully withdrawn proximally, relative to the bed; the facing first and second pinch zones defining a reduced-width annulus for pinching a proximal end of the stent to make available increased resistance to relative axial movement between the stent and the catheter just prior to full withdrawal of the outer tube.
Claim 3
Dependent Claim
20 words
A delivery catheter as claimed in claim 1 , wherein the outer tube is a full length outer catheter tube.
Claim 4
Dependent Claim
16 words
A delivery catheter as claimed in claim 1 , wherein the outer tube carries a marker.
Claim 5
Dependent Claim
26 words
A delivery catheter as claimed in claim 3 , wherein the outer tube marker deforms the outer tube radially inwardly to create the second pinch zone.
Claim 6
Dependent Claim
23 words
A delivery catheter as claimed in claim 1 , in which the first pinch zone is formed by an annulus of cured polymer.
Claim 7
Dependent Claim
19 words
A delivery catheter as claimed in claim 5 , wherein the cured polymer is placed around a catheter marker.
Claim 8
Dependent Claim
24 words
A delivery catheter as claimed in claim 6 , wherein the catheter marker also serves to define the proximal end of the stent bed.
Claim 9
Dependent Claim
27 words
A stent delivery catheter as defined in claim 1 , further in combination with a self-expanding stent contained within a distal region of the outer catheter tube.
Claim 10
Dependent Claim
22 words
A delivery catheter as defined in claim 8 wherein the proximal end of the stent is disposed about the first pinch zone.
Claim 11
Dependent Claim
34 words
An apparatus as claimed in claim 1 further comprising, in combination, a self-expanding stent contained within the outer catheter tube, the stent having a proximal end disposed about the bed of the inner member.
Claim 12
Dependent Claim
34 words
An apparatus as claimed in claim 2 further comprising, in combination, a self-expanding stent contained with the outer catheter tube, the stent having a proximal end disposed about the bed of the inner member.
Claim 13
Dependent Claim
34 words
An apparatus as claimed in claim 3 further comprising, in combination, a self-expanding stent contained within the outer catheter tube, the stent having a proximal end disposed about the bed of the inner member.
Claim 14
Dependent Claim
34 words
An apparatus as claimed in claim 4 further comprising, in combination, a self-expanding stent contained within the outer catheter tube, the stent having a proximal end disposed about the bed of the inner member.
Claim 15
Dependent Claim
34 words
An apparatus as claimed in claim 5 further comprising, in combination, a self-expanding stent contained within the outer catheter tube, the stent having a proximal end disposed about the bed of the inner member.
Claim 16
Dependent Claim
34 words
An apparatus as claimed in claim 6 further comprising, in combination, a self-expanding stent contained within the outer catheter tube, the stent having a proximal end disposed about the bed of the inner member.
Claim 17
Dependent Claim
34 words
An apparatus as claimed in claim 7 further comprising, in combination, a self-expanding stent contained within the outer catheter tube, the stent having a proximal end disposed about the bed of the inner member.
Claim 18
Dependent Claim
34 words
An apparatus as claimed in claim 8 further comprising, in combination, a self-expanding stent contained within the outer catheter tube, the stent having a proximal end disposed about the bed of the inner member.
Claim 19
Dependent Claim
34 words
An apparatus as claimed in claim 9 further comprising, in combination, a self-expanding stent contained within the outer catheter tube, the stent having a proximal end disposed about the bed of the inner member.
References Cited (Backward Citations)
DE3713384A1
Cited
EP0274846A1
Cited
WO1991012779A1
Cited
US5064435A
Cited
EP0587197A1
Cited
EP0540290A2
Cited
EP0556850A1
Cited
WO1993017636A1
Cited
US5645559A
Cited
US5817102A
Cited
US5690644A
Cited
WO1994017754A1
Cited
DE4333836A1
Cited
EP0647438A1
Cited
EP0761251A1
Cited
EP0775470A1
Cited
US5944726A
Cited
US5968052A
Cited
WO1999047075A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-02-10 | 2006-08-12 | 2007-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-02-10 | 2010-08-12 | 2011-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-02-10 | 2014-08-12 | 2015-02-11 | $7700.00 | Window Closed / Lapsed |