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US 2022/0151761 A1Published application
Tapered implantable device and methods for making such devices
AssigneeW. L. Gore & Associates, Inc.
InventorsEdward H. Cully, Jeffrey B. Duncan, Marc A. Schlaud, Arthur R. Studley
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Abstract
A tapered implantable device includes an ePTFE tubular member having a tapered length portion. The tapered length portion provides rapid recovery properties. The tapered length portion can feature a microstructure that includes a multiplicity of bent fibrils.
Claims20
An implantable article comprising:
- a polymeric tube comprising a first length portion having a first diameter and a second length portion having a second diameter, the first length having a first rapid recovery property defined by a difference between an extended length of the first length portion and a recovered length of the first length portion;
- and
- a tapered length portion extending between the first length portion and the second length portion, the tapered length portion having a tapered length portion rapid recovery property that is defined by a difference between an extended length of the tapered length portion and a recovered length of the tapered length portion, wherein the first rapid recovery property differs from the tapered length rapid recovery property at a compression ratio between 30% and 95%.
An implantable article comprising:
- a polymeric tube comprising a first portion having a first diameter and a second portion having a second diameter, the first diameter being less than the second diameter, and the first length having a first rapid recovery property defined by a difference between an extended length of the first length portion and a recovered length of the first length portion;
- and
- a tapered portion extending between the first portion and the second portion, the tapered portion having a tapered portion rapid recovery property that is defined by a difference between an extended length of the tapered portion and a recovered length of the tapered portion, wherein the tapered portion rapid recovery property defines a compression ratio of between 30% and 95%.
A method of manufacturing an implantable article having a tapered length portion extending between a first length portion and a second length portion, the method comprising:
- forming a tapered length portion having a first length in a polymeric tube using a first mandrel having a first tapered length segment;
- removing the polymeric tube from the first mandrel;
- compressing the tapered portion having the first length of the polymeric tube on a second mandrel having a second tapered length segment such that the tapered portion has a second length that is shorter than the first length;
- and
- removing the polymeric tube from the second mandrel.
2 more elements
Dependencies are inferred from the claim text.