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    • 73. 发明专利
    • DEPLOYMENT SYSTEM FOR INTRALUMINAL DEVICES
    • CA2435349C
    • 2007-10-09
    • CA2435349
    • 2002-01-22
    • GORE ENTERPRISE HOLDINGS INC
    • ARMSTRONG JOSEPH RCULLY EDWARD HVONESH MICHAEL JULM MARK J
    • A61F2/86
    • A constraining sheath for use around an endoprosthesis (e.g., a stent device , with or without a graft covering), which may be a balloon expandable endoprosthesis but more preferably is a self-expanding prosthesis. The endoprosthesis is coaxially enclosed within the constraining sheath, which i s an outer, disruptable, preferably implantable tubular sheath, preferably mad e of ePTFE. The constraining sheath and endoprosthesis are preferably mounted together as an assembly on an angioplasty balloon for delivery. Deployment o f the endoprosthesis entails inflating the angioplasty balloon to a pressure sufficient to disrupt or break the constraining sheath in a prescribed fashion, thereby allowing a self-expanding endoprosthesis to spontaneously deploy. The constraining sheath of ePTFE may be attached to the endoprothesi s and implanted along with the device, or alternatively attached to the balloo n catheter shaft and removed with the balloon catheter. The angioplasty balloon's working length is preferably shorter than the length of the endoprosthesis. A endoprosthesis assembly incorporating a constraining sheat h according to one embodiment of the invention is also provided with an additional packaging sheath.