US6254628B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intracranial stent
Assignee: Micro Therapeutics Inc
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Filing: 1996-12-09
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Granted: 2001-07-03
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Expires: 2016-12-09
Abstract
Abstract A stent and stent catheter for intra-cranial use. The stent is a rolled sheet stent and is releasably mounted on the distal tip of the catheter by means of a non-sliding retention and release mechanism. The non-sliding release mechanism is operated remotely at the proximal end of the catheter by means of a linear translator. The stent is rolled tightly on the distal tip of the catheter and flexibility of the tightly rolled stent is promoted by ribbed or slatted construction (or, alternatively, slotted construction) in which the various layers of the stent are provided with numerous slats which counter align when the stent is expanded to form an imperforate wall from a plurality of perforate layers.
Inventors
- 👤 George Wallace
- 👤 Jay Lenker
- 👤 Thomas J. Berryman
- 👤 Robert R. Greene
- 👤 Rodney Brenneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:44
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12113; A61B17/12118; A61B17/12131; A61B17/1214; A61F; A61F2/00; A61F2/82; A61F2/92; A61F2/95; A61F2/962; A61F2/97; A61B17/122; A61B2017/1205; A61B2017/12054; A61B2017/12063; A61B2017/12068; A61F2/86; A61F2/90; A61F2/9517; A61F2002/823; A61F2002/9505; A61F2002/9511; A61F2210/00; A61F2210/0076; A61F2230/00; A61F2230/0063; A61F2230/0095; A61F2250/00; A61F2250/0058; A61F2250/0071; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
98 words
A stent delivery system comprising: an insertion catheter having a distal end and a proximal end; a self-expanding stent mounted on the distal end of the insertion catheter, said self-expanding stent having a small diameter configuration and a large diameter configuration; tear-away sheath means for retaining the stent on the distal end of the insertion catheter, the tear-away sheath means is separate from the insertion catheter, and the tear-away sheath means does not slide over the stent after release; and sheath release means for releasing the stent from the tear-away sheath means to allow the stent to expand.
Claim 2
Dependent Claim
98 words
A stent delivery system comprising: an insertion catheter having a distal end and a proximal end; a self-expanding stent mounted on the distal end of the insertion catheter, said self-expanding stent having a small diameter configuration and a large diameter configuration; tear-away sheath means for retaining the stent on the distal end of the insertion catheter, the tear-away sheath means is separate from the insertion catheter, and the tear-away sheath means does not slide over the stent after release; and sheath release means for releasing the stent from the tear-away sheath means to allow the stent to expand.
Claim 3
Dependent Claim
125 words
A stent delivery system comprising: an insertion catheter having a distal end and a proximal end; a self-expanding stent mounted on the distal end of the insertion catheter, said self-expanding stent having a small diameter configuration and a large diameter configuration; tear-away sheath means for retaining the stent on the distal end of the insertion catheter, the tear-away sheath means is detachable from the insertion catheter; and sheath release means for releasing the stent from the tear-away sheath means to allow the stent to expand; wherein release is accomplished without requiring that the tear-away sheath move axially over the stent in order to release the stent; wherein removal of the insertion catheter is accomplished without requiring that the tear-away sheath move axially over the stent.
Claim 4
Dependent Claim
125 words
A stent delivery system comprising: an insertion catheter having a distal end and a proximal end; a self-expanding stent mounted on the distal end of the insertion catheter, said self-expanding stent having a small diameter configuration and a large diameter configuration; tear-away sheath means for retaining the stent on the distal end of the insertion catheter, the tear-away sheath means is detachable from the insertion catheter; and sheath release means for releasing the stent from the tear-away sheath means to allow the stent to expand; wherein release is accomplished without requiring that the tear-away sheath move axially over the stent in order to release the stent; wherein removal of the insertion catheter is accomplished without requiring that the tear-away sheath move axially over the stent.
Claim 5
Dependent Claim
177 words
A catheter delivery system comprising: an insertion catheter having a distal end and a proximal end; a stent mounted on the distal end of the insertion catheter; stent retaining sheath means which holds the stent on the distal end of the insertion catheter, the stent retaining sheath means is detachable from the insertion catheter; an elongate member operably connected to the stent retaining sheath means, said elongate member being operable from the proximal end of the insertion catheter to tear the stent retaining sheath means to release the stent, the elongate member acts to release the stent retaining sheath means from the stent without causing the inner surface of the sheath means to slide over the stent after release; and a linear translator located at the proximal end of the insertion catheter and engaging the elongate member for moving the elongate member axially in relation to the insertion catheter, the elongate member acts to release the stent retaining sheath means from the stent without causing the inner surface of the sheath means to slide over the stent.
Claim 6
Dependent Claim
177 words
A catheter delivery system comprising: an insertion catheter having a distal end and a proximal end; a stent mounted on the distal end of the insertion catheter; stent retaining sheath means which holds the stent on the distal end of the insertion catheter, the stent retaining sheath means is detachable from the insertion catheter; an elongate member operably connected to the stent retaining sheath means, said elongate member being operable from the proximal end of the insertion catheter to tear the stent retaining sheath means to release the stent, the elongate member acts to release the stent retaining sheath means from the stent without causing the inner surface of the sheath means to slide over the stent after release; and a linear translator located at the proximal end of the insertion catheter and engaging the elongate member for moving the elongate member axially in relation to the insertion catheter, the elongate member acts to release the stent retaining sheath means from the stent without causing the inner surface of the sheath means to slide over the stent.
Claim 7
Dependent Claim
122 words
A stent delivery catheter comprising: an insertion catheter having a distal end and a proximal end; a self-expanding stent mounted on the distal tip of the insertion catheter, said self-expanding stent having a compressed configuration and an expanded configuration; tear-away means for retaining the stent on the distal tip of the insertion catheter in the compressed configuration; and means for releasing the stent from the distal tip of the insertion catheter and allowing the stent to expand to the expanded configuration, wherein said means for releasing the stent from the distal tip of the insertion catheter permits the stent to be released and the insertion catheter to be withdrawn without causing the retaining means to slide over the surface of the stent.
Claim 8
Dependent Claim
122 words
A stent delivery catheter comprising: an insertion catheter having a distal end and a proximal end; a self-expanding stent mounted on the distal tip of the insertion catheter, said self-expanding stent having a compressed configuration and an expanded configuration; tear-away means for retaining the stent on the distal tip of the insertion catheter in the compressed configuration; and means for releasing the stent from the distal tip of the insertion catheter and allowing the stent to expand to the expanded configuration, wherein said means for releasing the stent from the distal tip of the insertion catheter permits the stent to be released and the insertion catheter to be withdrawn without causing the retaining means to slide over the surface of the stent.
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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) | 2004-07-02 | 2005-01-01 | 2005-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-02 | 2009-01-01 | 2009-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-02 | 2013-01-01 | 2013-07-03 | $7700.00 | Window Closed / Lapsed |