Flexible, kink-resistant, introducer sheath and method of manufacture
First Claim
1. A flexible, kink-resistant, introducer sheath, comprising:
- an inner tube having a passageway extending longitudinally therethrougha coil having a plurality of turns positioned longitudinally and compression fitted around and applying a compressive forces to said inner tube, said turns having a predetermined spacing therebetween; and
an outer tube positioned longitudinally around said coil and said inner tube and connected to said inner tube through the spaces between said turns.
2 Assignments
0 Petitions
Accused Products
Abstract
A flexible, kink-resistant, introducer sheath for percutaneous vascular access. The introducer sheath includes a flat wire coil with uniform spacing between the turns, which is compression fitted about an inner, lubricous material polytetrafluoroethylene tube. The introducer sheath further includes an outer tube of a heat formable polyamide material which is heat formed and compressed through the spaces between the turns of the wire coil to mechanically connect to the roughened outer surface of the inner tube. The distal end of the outer tube is tapered in a mold with additional polyamide outer tube material. The proximal end of the sheath is flared for connection to a connector fitting. In another aspect of the introducer sheath, the flat wire coil has an inner diameter less than the outer diameter of the inner tube. The coil is then expanded and wrapped around the inner tube to form a compression fit.
414 Citations
24 Claims
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1. A flexible, kink-resistant, introducer sheath, comprising:
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an inner tube having a passageway extending longitudinally therethrough a coil having a plurality of turns positioned longitudinally and compression fitted around and applying a compressive forces to said inner tube, said turns having a predetermined spacing therebetween; and an outer tube positioned longitudinally around said coil and said inner tube and connected to said inner tube through the spaces between said turns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A flexible, kink-resistant, introducer sheath, comprising:
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an inner tube having a smooth inner surface, a rough outer surface, and a uniform diameter passageway extending longitudinally therethrough; a flat wire coil having a plurality of turns positioned longitudinally and compression fitted around said inner tube, said turns having a predetermined spacing therebetween; and an outer tube positioned longitudinally and heat shrunk between the spaces of said coil and around said coil and around said inner tube and mechanically connected to said rough outer surface of said inner tube. - View Dependent Claims (19)
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20. A percutaneous introducer sheath, comprising:
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a lubricous material tube having a smooth inner surface defining a uniform passageway extending longitudinally therethrough, and an etched outer surface; a flat wire coil having a plurality of turns positioned longitudinally and compression fitted around said lubricous material tube and proximally from an end of said lubricous material tube, said turns having a predetermined spacing therebetween; a heat deformable polyamide material tube heat shrunk between the spaces of said coil and mechanically connected with said etched outer surface of said lubricous material tube through the spaces between said turns and having a smooth outer surface and tip material bonded thereto to form a tapered distal end extending distally beyond said end of said lubricous material tube; and an fluorinated ethylene propylene material tube heat shrunk around said heat deformable tube.
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21. A flexible, kink-resistant, introducer sheath, comprising:
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an inner tube having a passageway extending longitudinally therethrough; a coil having a plurality of turns wound and compression fitted around and applying a compressive force to said inner tube, said turns having a plurality of spaces therebetween; and an outer tube positioned longitudinally around said coil and said inner tube and connected to said inner tube through said spaces between said turns. - View Dependent Claims (22, 23, 24)
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Specification