Biliary Stents and Methods
AssigneeBoston Scientific Scimed, Inc.
InventorsKenneth F. Binmoeller, Sieu T. Duong, Hanh Huu Duong, Thao Nguyen
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Abstract
A tissue lumen stent is provided with a body having an elongated tubular configuration and a foreshortened configuration. In the foreshortened configuration, downstream and upstream ends of the body expand radially into downstream and upstream flange structures, leaving a generally cylindrical saddle region therebetween. In some embodiments, the flange structures are non-symmetrical with respect to one another. Systems and methods of using the stents are also disclosed.
Claims20
A stent comprising a body having an elongated tubular configuration and a foreshortened configuration wherein a downstream end of the body expands into a downstream flange structure and an upstream end of the body expands into a flared flange structure, wherein a maximum outer diameter of the downstream flange structure is greater than twice a maximum axial length of the downstream flange structure, and wherein a portion of the flared flange structure increases in diameter and another portion of the flared flange structure decreases in diameter.
A stent comprising a body having an elongated tubular configuration and a foreshortened configuration wherein a downstream end of the body expands into a downstream flange structure and an upstream end of the body expands into a flared flange structure leaving a saddle region therebetween, wherein an axial length of the flared flange structure is at least as long as an axial length of the saddle region.
A method of treating a patient, comprising:
- accessing a biliary system of a patient with an endoscope;
- and
- deploying, within the biliary system of the patient, a stent having a foreshortened configuration defining an upstream flared flange structure, a downstream flange structure and a cylindrical portion extending therebetween, wherein a maximum outer diameter of the downstream flange structure is greater than twice a maximum axial length of the downstream flange structure, and wherein a portion of the flared flange structure increases in diameter and another portion of the flared flange structure decreases in diameter.
Dependencies are inferred from the claim text.