Abstract The present invention provides an endoprosthesis assembly having a reduced
cross sectional profile for percutaneous deployment and implantation within a body
passageway such as a blood vessel. The assembly comprises a radially expandable
cylindrical frame having first and second ends, and a first unexpanded outer diameter
and a second expanded outer diameter. The assembly further comprises a radially
expandable elastomeric sleeve surrounding a length of the frame and having first and
second ends and a first unexpanded inner diameter and a second expanded inner
diameter. The inner diameter of the expanded sleeve is not greater than the outer
diameter of the expanded frame. The second expanded inner diameter of the sleeve
is in a range from about 60% to about 380% greater than the first unexpanded inner
diameter of the sleeve. The assembly of the preferred embodiment is adapted to be
deployed through an introducer smaller than 9 French and the sleeve is capable of
expanding to an inner diameter of about 12 millimeters.
An endoprosthesis assembly for percutaneous deployment and implantation
within a body passageway, comprising: a radially expandable cylindrical frame having first and second ends, said
frame having a first unexpanded outer diameter and a second expanded outer diameter; a radially expandable elastomeric sleeve surrounding a length of said frame and
having first and second ends, said sleeve having a first unexpanded inner diameter and
a second expanded inner diameter; wherein a second expanded inner diameter of said sleeve is not greater than
a second expanded outer diameter of said frame; and wherein a second expanded inner diameter of said sleeve is in a range from
about 60% to about 380% greater than a first unexpanded inner diameter of said
sleeve.
Claim 2
Dependent Claim
27 words
The endoprosthesis assembly of claim 1 wherein a first unexpanded inner
diameter of said sleeve is not greater than a first unexpanded outer diameter of said
frame.
Claim 3
Dependent Claim
25 words
The endoprosthesis assembly of claim 1 wherein said expanded sleeve has a
sleeve modulus in a range from about 100 psi to about 6000 psi.
Claim 4
Dependent Claim
27 words
The endoprosthesis assembly of claim 3 wherein said second expanded inner
diameter of said sleeve is in a range from about 4 millimeters to about 12 millimeters.
Claim 5
Dependent Claim
61 words
The endoprosthesis assembly of claim 1 wherein said sleeve comprises an
elastomer having a percent elongation at break in a range from about 500 to about
585, an ultimate tensile strength in a range from about 4400 to about 5300 pounds per
square inch, and a durometer hardness in a range from about 73 (shore A) to about
80 (shore A).
Claim 6
Dependent Claim
61 words
The endoprosthesis assembly of claim 2 wherein said sleeve comprises an
elastomer having a percent elongation at break in a range from about 500 to about
585, an ultimate tensile strength in a range from about 4400 to about 5300 pounds per
square inch, and a durometer hardness in a range from about 73 (shore A) to about
80 (shore A).
Claim 7
Dependent Claim
61 words
The endoprosthesis assembly of claim 3 wherein said sleeve comprises an
elastomer having a percent elongation at break in a range from about 500 to about
585, an ultimate tensile strength in a range from about 4400 to about 5300 pounds per
square inch, and a durometer hardness in a range from about 73 (shore A) to about
80 (shore A).
Claim 8
Dependent Claim
61 words
The endoprosthesis assembly of claim 4 wherein said sleeve comprises an
elastomer having a percent elongation at break in a range from about 500 to about
585, an ultimate tensile strength in a range from about 4400 to about 5300 pounds per
square inch, and a durometer hardness in a range from about 73 (shore A) to about
80 (shore A).
Claim 9
Dependent Claim
18 words
The endoprosthesis assembly of any one of claim 1 to 8
wherein said elastomer is a polycarbonate polyurethane.
Claim 10
Dependent Claim
32 words
The endoprosthesis assembly of claim 1 wherein said assembly is adapted to
be disposed through an introducer having an inner diameter in a range from about 2.5
mm. to about 2.7 mm.
References Cited (Backward Citations)
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