Introducer sheath having profiled reinforcing member
First Claim
1. An introducer sheath comprising:
- an inner liner having a passageway extending longitudinally therethrough;
a reinforcing member positioned longitudinally over the inner liner, the reinforcing member comprising a coil having adjacent coil turns, each of said coil turns having a monolithic cross-section comprising opposing end portions and a center portion, wherein a thickness of said coil turns at said end portions is greater than a thickness at said center portion, wherein said thickness of said center portion does not exceed about one-third of said thickness of said end portions; and
an outer jacket positioned longitudinally over said inner liner and said coil, said outer jacket bonded to said inner liner between said coil turns.
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Accused Products
Abstract
An introducer sheath includes an inner liner having a passageway extending longitudinally therethrough, a coil positioned over the inner liner, and an outer jacket positioned over the liner and the coil. The outer jacket is bonded to the inner liner between the coil turns. The coil turns have a cross-section comprising opposing end portions, and a center portion disposed between the opposing end portions. The center portion has a thickness not exceeding about one-third of a thickness of the end portions for reducing a bending modulus of the coil, and the end portions have a generally curved outer surface. At least a distal end portion of the outer jacket has a durometer between about 70 and 90 on the Shore D scale.
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Citations
13 Claims
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1. An introducer sheath comprising:
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an inner liner having a passageway extending longitudinally therethrough; a reinforcing member positioned longitudinally over the inner liner, the reinforcing member comprising a coil having adjacent coil turns, each of said coil turns having a monolithic cross-section comprising opposing end portions and a center portion, wherein a thickness of said coil turns at said end portions is greater than a thickness at said center portion, wherein said thickness of said center portion does not exceed about one-third of said thickness of said end portions; and an outer jacket positioned longitudinally over said inner liner and said coil, said outer jacket bonded to said inner liner between said coil turns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An introducer sheath comprising:
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an inner liner having a passageway extending longitudinally therethrough, said inner liner having an outer surface; a coil positioned longitudinally over the inner liner, the coil having adjacent coil turns, each of said coil turns having a monolithic cross-section comprising opposing end portions and a center portion disposed between said opposing end portions, said center portion having a thickness not exceeding about one-third of a thickness of said end portions for reducing a bending modulus of said coil, said end portions having a generally curved outer surface, at least one of the coil end portions having a radius r and a thickness t such that the generally curved outer surface is defined by the formula r=t/2; and an outer jacket positioned longitudinally over said inner liner and said coil, said outer jacket bonded to said inner liner between said coil turns, at least a distal end portion of the outer jacket having a durometer between about 70 and 90 on the Shore D scale. - View Dependent Claims (12, 13)
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Specification