Clad composite stent

Details Clad composite stent Clad composite stent

1995-06-07

1997-05-13

Isabella, David

Prosthesis (i.e., artificial body members), parts thereof, or ai

Arterial prosthesis

Stent structure

623 11, 623 12, 606194, 606195, 606198, A61F 206

Patent

active

056287879

ABSTRACT:
A body compatible stent is formed of multiple filaments arranged in two sets of oppositely directed helical windings interwoven with one another in a braided configuration. Each of the filaments is a composite including a central core and a case surrounding the core. In the more preferred version, the core is formed of a radiopaque and relatively ductile material having a linear attenuation coefficient of at least 25 cm.sup.-1 at 100 KeV, e.g. tantalum or platinum. The outer case is formed of a relatively resilient material, e.g. a cobalt/chromium based alloy. Favorable mechanical characteristics of the stent are determined by the case, while the core enables in vivo imaging of the stent. Alternative composite filaments employ an intermediate barrier layer between the case and core formed for example of tantalum, niobium or platinum. To improve compatibility, a biocompatible cover layer can surround the case. The cover layer incorporates at least one of the following: tantalum, platinum, iridium, stainless steel, niobium and titanium. Yet another alternative composite filament features a radiopaque case surrounding a structural core.

REFERENCES:
patent: 2524661 (1950-10-01), Harder et al.
patent: 3466166 (1969-09-01), Levinstein et al.
patent: 3562024 (1971-02-01), Smith et al.
patent: 4023557 (1977-05-01), Thorne et al.
patent: 4281419 (1981-08-01), Treace
patent: 4465481 (1984-08-01), Blake
patent: 4600446 (1986-07-01), Torisaka et al.
patent: 4719916 (1988-01-01), Ravo
patent: 4731084 (1988-03-01), Dunn et al.
patent: 4830262 (1989-05-01), Ishibe
patent: 4848348 (1989-07-01), Craighead
patent: 4883486 (1989-11-01), Kapadia et al.
patent: 4950227 (1990-08-01), Savin et al.
patent: 5001825 (1991-03-01), Halpern
patent: 5003987 (1991-04-01), Grinwald
patent: 5003989 (1991-04-01), Taylor et al.
patent: 5015253 (1991-05-01), MacGregor
patent: 5024232 (1991-06-01), Smid et al.
patent: 5047050 (1991-09-01), Arpesani
patent: 5069226 (1991-12-01), Yamauchi et al.
patent: 5092877 (1992-03-01), Pinchuk
patent: 5104404 (1992-04-01), Wolff
patent: 5139480 (1992-08-01), Hickle et al.
patent: 5201901 (1993-04-01), Harada et al.
patent: 5207706 (1993-05-01), Menaker
patent: 5213111 (1993-05-01), Cook et al.
patent: 5217483 (1993-06-01), Tower
patent: 5256764 (1993-10-01), Tang et al.
patent: 5320100 (1994-06-01), Herweck et al.
patent: 5360442 (1994-11-01), Dahl et al.
patent: 5374261 (1994-12-01), Yoon
patent: 5382259 (1995-01-01), Phelps et al.
patent: 5389106 (1995-02-01), Tower
patent: 5514154 (1996-05-01), Lau et al.
WO 93/19803 "Medical Wire"; Oct. 1993; Heath et al.
WO 93/19804 "Tubular Medical Endoprostheses"; Oct. 1993; Heath et al.
WO 92/13483 "Multifilar Coil Guide Wire"; Aug. 1992; Fleischhacker, et al.
WO 94/16646 "Clad Composite Stent"; Aug. 1994; Mayer.
PCT/US93/11262, Search Report; Nov. 1993; Schneider (USA) Inc "DFT--Drawn Filled Tubing".
"Intravascular Stents to Prevent Occlusion and Restenosis After Transluminal Angioplasty", The New England Journal of Medicine, Sigwart et al, vol. 316, Mar. 19, 1987, No. 12.
"Strengthening mechanisms in Elgiloy", Journal of Materials Science, Assefpour-Dezfuly et al; Nov. 1983; pp. 2815-2836.
PCT/IB 95/00253, Search Report, Oct. 1995, Schneider (USA) Inc.
1991 Annual Book of ASTM Standards, vol. 13.01 Medical Devices.

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