Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
1999-06-17
2001-08-28
Kennedy, Sharon (Department: 3763)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C606S108000
Reexamination Certificate
active
06280412
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to improved apparatus suitable for stent delivery and implantation.
Stents are implantable devices which are placed within body lumens and the like, such as blood vessels. Stents are typically tubular in form, the diameter of which can be increased for implantation. They maybe made of plastic or metal. Stents are usually introduced for implantation percutaneously by means of a catheter and the diameter of the stent is increased by inflation of a balloon on the catheter.
In one aspect, this invention relates to an improvement in the stent delivery system described in U.S. Pat. No. 4,950,227 to Savin et al., entitled “Stent Delivery System” and issued on Aug. 21, 1990. This patent is incorporated herein in its entirety by reference.
That patent discloses a stent delivery system in which a catheter carries, on its distal end portion, a stent which is held in place around the catheter prior to and during percutaneous delivery by means of one and preferably two sleeves. The sleeves are positioned around the catheter with one end portion attached thereto and overlap an end portion(s) of the stent to hold it in place on the catheter in a contracted condition. Each sleeve is elastomeric in nature so as to stretch and release the stent when it expands for implantation. The stent is expandable by means of the expandable balloon on the catheter.
SUMMARY OF THE INVENTION
In a first aspect, this invention provides securement of a stent on a balloon by means of a folded or rolled end portion of the balloon itself.
In another aspect of this invention the balloon configured as described above is used in combination with the elastic sleeves of the Savin et al. patent.
Additionally, the balloon shape may be modified, as by enlarged cone portions, to facilitate the above improvements.
Moreover, these features may be used alone or in combination and may be applied to one or both ends of the stent to secure it for delivery.
REFERENCES:
patent: 3810474 (1974-05-01), Cross
patent: 4950227 (1990-08-01), Savin et al.
patent: 5019042 (1991-05-01), Sahota
patent: 5074845 (1991-12-01), Miraki et al.
patent: 5254091 (1993-10-01), Aliahmad et al.
patent: 5445646 (1995-08-01), Euteneuer et al.
patent: 5522882 (1996-06-01), Gaterud et al.
patent: 5549635 (1996-08-01), Solar
patent: 5728068 (1998-03-01), Leone et al.
patent: 5733299 (1998-03-01), Sheiban et al.
patent: 5755968 (1998-05-01), Stone
patent: 5810871 (1998-09-01), Tuckey et al.
patent: 5836965 (1998-11-01), Jendersee et al.
patent: 5913871 (1999-06-01), Werneth et al.
patent: 5935135 (1999-08-01), Bramfitt et al.
patent: 5951514 (1999-09-01), Sahota
patent: 5951569 (1999-09-01), Tuckey et al.
patent: 5971990 (1999-10-01), Venturelli
patent: 5980530 (1999-11-01), Willard et al.
patent: 6027510 (2000-02-01), Alt
patent: 6045531 (2000-04-01), Davis
patent: 6045568 (2000-04-01), Igaki et al.
patent: 0 901 776 A1 (1999-03-01), None
patent: WO 97/21400 (1997-06-01), None
patent: WO 98/07388 (1998-02-01), None
patent: WO 99/10037 (1999-03-01), None
patent: WO 99/15106 (1999-04-01), None
Technical Bulletin from Arterial Vascular Engineering dated 1998, and entitled “AVE has recently been allowed a U.S. patent which now allows us to publicly disclose a proprietary stent retention process that has been in use on all of AVE's stents.” Dec. 1998.
Hanson Scott M.
Pederson, Jr. Gary J.
Seppala Jan D.
Smith Scott R.
Vrba Anthony C.
Kennedy Sharon
Sci-Med Life Systems, Inc.
Vidas Arrett & Steinkraus P.A.
LandOfFree
Stent securement by balloon modification does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stent securement by balloon modification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stent securement by balloon modification will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2513738