Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Arterial prosthesis – Stent combined with surgical delivery system
Reexamination Certificate
1999-03-22
2001-04-24
Mancene, Gene (Department: 3732)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Arterial prosthesis
Stent combined with surgical delivery system
C606S108000
Reexamination Certificate
active
06221097
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to apparatus suitable for stent delivery and implantation.
Generally, 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. Stents are usually introduced for implantation percutaneously by means of a catheter.
SUMMARY OF THE INVENTION
In its primary aspect, this invention relates to an improvement in the stent delivery system described in U.S. Pat. No. 4,950,227, entitled “Stent Delivery System” and issued on Aug. 21, 1990. That patent is incorporated herein in its entirety by reference.
The patent relates to a 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 end sleeves. The stent may be self-expanding, such as a NITINOL shape memory stent, or it may be expandable by means of an expandable portion of the catheter, such as a balloon.
The sleeves are positioned around the catheter with one end portion of each sleeve connected thereto. The other end of each sleeve overlaps an opposite end portion of the stent to hold it in place on the catheter in a contracted condition. The sleeves are elastomeric in nature so as to stretch and release the stent when it expands for implantation. In the patent, sometimes a fluid lubricant is added between the sleeve and the balloon on the catheter to facilitate release of the stent.
This invention provides an improvement with respect to lubrication by coating or other wise lubricating the sleeve prior to its assembly with the catheter. A preferred way of lubricating the sleeve is by incorporating a lubricant additive within the sleeve composition. By this is meant that an additive is included within the polymeric composition per se or physically within the matrix of the polymeric composition, such as including discrete dry lubricant particles within matrix pores of a sleeve body.
REFERENCES:
patent: 3892314 (1975-07-01), Semp
patent: 4773902 (1988-09-01), Lentz et al.
patent: 4950227 (1990-08-01), Savin et al.
patent: 5409495 (1995-04-01), Osborn
patent: 5534007 (1996-07-01), St. Germain et al.
patent: 5634928 (1997-06-01), Fischell et al.
patent: 5690644 (1997-11-01), Yurek et al.
patent: 5702418 (1997-12-01), Ravenscroft
patent: 5843090 (1998-12-01), Schuetz
patent: 5843092 (1998-12-01), Heller et al.
patent: 5951569 (1999-09-01), Tuckey et al.
patent: 5980530 (1999-11-01), Willard et al.
patent: 5980533 (1999-11-01), Holman
patent: 5989280 (1999-11-01), Euteneuer et al.
patent: 0 442 657 A2 (1990-02-01), None
patent: 0 688 545 A1 (1995-06-01), None
Chen Jianhua
Tran The Thomas Trinh
Wang Lixiao
Yang Dachuan
Mancene Gene
Priddy Michael B.
SciMed Life System, Inc.
Vidas Arrett & Steinkraus
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