PARTIAL ENCAPSULATION OF STENTS
First Claim
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1. A method of making an implantable medical device, comprising:
- extruding a first ePTFE tube at a first extruded diameter;
extruding a second ePTFE tube at a second extruded diameter;
cutting a plurality of slits in the first ePTFE tube at the first extruded diameter;
subsequent to the cutting, positioning a radially expandable support layer between the first and second ePTFE tubes so that the slits span portions of the support layer; and
laminating the first ePTFE tube to the second ePTFE tube through openings in the support layer.
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Abstract
A method of making an implantable medical device includes extruding a first ePTFE tube and a second ePTFE tube, cutting a plurality of slits in the first ePTFE tube, positioning a radially expandable support layer between the first and second ePTFE tubes so that the slits span portions of the support layer, and laminating the first ePTFE tube to the second ePTFE tube through openings in the support layer.
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Citations
14 Claims
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1. A method of making an implantable medical device, comprising:
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extruding a first ePTFE tube at a first extruded diameter; extruding a second ePTFE tube at a second extruded diameter; cutting a plurality of slits in the first ePTFE tube at the first extruded diameter; subsequent to the cutting, positioning a radially expandable support layer between the first and second ePTFE tubes so that the slits span portions of the support layer; and laminating the first ePTFE tube to the second ePTFE tube through openings in the support layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for making an implantable medical device, comprising:
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extruding a first ePTFE tube; extruding a second ePTFE tube; cutting a plurality of openings in both the first and second ePTFE tubes; positioning the first ePTFE tube with openings on a mandrel, followed by placing a support layer comprising at least one stent on the first ePTFE tube, followed by placing the second ePTFE tube with openings on the support layer such that the openings in the second ePTFE tube are out of phase with the openings in the first ePTFE tube such that none of the openings of the second ePTFE tube overlap the openings of the first ePTFE tube; and laminating the first ePTFE tube to the second ePTFE tube through openings in the support layer.
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Specification