| 摘要 |
This invention is a method and device (1) for implanting an endoprosthesis (4) within the lumen of a body passageway. A tubular, elongated endoprosthesis (4) having a small outer diameter for intraluminal delivery of the selected body passageway, is capable of being progressively permanently deformed to an expanded diameter by application of outwardly acting force. The endoprosthesis (4) is provided on a catheter (2) having an inflatable, radially expandable balloon (3), the axial dimension of which is shorter than the axial dimension of the endoprosthesis. The elongated prothesis (4) is inserted in unexpanded state into a desired location within the body passageway and with the catheter (2) positioned so that its expandable portion registers inside a first portion of the endoprosthesis (4), the inflatable portion (3) of the catheter (2) is inflated to cause deformation of the first portion of the endoprosthesis (4) to an expanded diameter. The inflatable portion (3) of the catheter (2) is then deflated and shifted axially until it registers with an unexpanded portion of the endoprosthesis and the inflation of the inflatable portion (3) of the catheter (2) is repeated until the elongated endoprosthesis (4) is expanded the desired length, and the endoprosthesis is permanently placed within the lumen.
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