Medical device with collapse-resistant liner and method of making same
First Claim
1. A medical device, comprising:
- an elongate tubular member having a plurality of slots formed therein;
a liner disposed within the tubular member, the liner having an outer surface and a plurality of corrugations formed along the outer surface, wherein at least some of the plurality of corrugations are disposed at longitudinal positions along the medical device substantially corresponding to longitudinal positions of at least some of the plurality of slots; and
a coil disposed along the outer surface of the liner.
1 Assignment
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Accused Products
Abstract
A medical device for guiding through anatomy, such as a catheter or guidewire, with a tubular body that has been slotted to enhance bending flexibility, and a polymer liner with an anti-collapsing structure, and a method of making a medical device with a kink-resistant corrugated tubular member and an anti-collapsing structure. Anti collapsing structures may be helical or annular, and may be wire, such as ribbon wire, grooves in the liner, corrugations, or a braid. Liners may be bonded to the anti-collapsing structure, or may have two layers, with the anti-collapsing structure between the layers. Corrugations may be formed between sections of the anti-collapsing ‘structure with heat, pressure, stretching, compression, a mold, or a combination thereof, and may extend inward or outward. Shape or wall thickness may vary along the length to provide a varying bending stiffness. Slots may be formed in groups of two, three, or more, and adjacent groups may be rotated about the axis forming a helical pattern.
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Citations
15 Claims
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1. A medical device, comprising:
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an elongate tubular member having a plurality of slots formed therein; a liner disposed within the tubular member, the liner having an outer surface and a plurality of corrugations formed along the outer surface, wherein at least some of the plurality of corrugations are disposed at longitudinal positions along the medical device substantially corresponding to longitudinal positions of at least some of the plurality of slots; and a coil disposed along the outer surface of the liner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical device, comprising:
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an elongate tubular member having a plurality of slots formed therein; a liner disposed within the tubular member, the liner having an outer surface and a plurality of inward corrugations formed along the outer surface, wherein at least some of the plurality of inward corrugations are disposed at longitudinal positions along the medical device substantially corresponding to longitudinal positions of at least some of the plurality of slots; and an anti-collapsing structure disposed along the outer surface of the liner. - View Dependent Claims (12, 13, 14, 15)
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Specification