CATHETER STYLETS
First Claim
1. A catheter stylet comprising, in combination, an elongated bodily flexible outer casing means a flexible tip portion and a main body portion, said means elongated bodily flexible outer casing means comprising helically wound wire, an elongated hollow tubular reinforcing and stiffening element entirely within said casing and extending axially throughout said main body portion, and a reinforcing bodily flexible strand portion disposed axially through both said tubular element and said flexible tip portion whereby the overall structural integrity if the stylet is increased, and separate bonding means securing both of the inner and outer walls of said tubular element to said strand and said outer casing respectively.
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Accused Products
Abstract
Catheter stylet having an elongated bodily flexible outer casing means comprising helically wound wire, and elongated reinforcing means extending generally axially therethrough comprising at least one strengthening portion.
127 Citations
10 Claims
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1. A catheter stylet comprising, in combination, an elongated bodily flexible outer casing means a flexible tip portion and a main body portion, said means elongated bodily flexible outer casing means comprising helically wound wire, an elongated hollow tubular reinforcing and stiffening element entirely within said casing and extending axially throughout said main body portion, and a reinforcing bodily flexible strand portion disposed axially through both said tubular element and said flexible tip portion whereby the overall structural integrity if the stylet is increased, and separate bonding means securing both of the inner and outer walls of said tubular element to said strand and said outer casing respectively.
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2. Catheter stylet as defined in claim 1 further including means securing said stiffening element against movement relative to said casing means.
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4. Catheter stylet defined in claim 3, wherein said multiple strands are twisted to define a wire rope.
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5. Catheter stylet defined in claim 4, further comprising means securing said bodily flexible portion to said stiffening element.
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6. Catheter stylet defined in claim 5, wherein said securing means securing said stiffening element against movement relative said casing means and said securing means securing said bodily flexible portion to said stiffening element comprising a material selected from the group consisting of epoxy, solder and silver solder.
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7. Catheter stylet defined in claim 6, further comprising means securing the distal end portions of said casing means and said flexible portion to preclude breakage and separation of said stylet.
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8. Catheter stylet defined in claim 6, wherein said tubular portion extends proximally of a location spaced apart from the distal end portion of said casing, wherein said bodily flexible strand portion extends to said distal end portion of said casing and wherein the style further comprises means securing the distal end portion of said bodily flexible portion and the distal end portion of said casing means.
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9. Catheter stylet defined in claim 8 wherein said securing means comprises a bight formed in said bodily flexible portion.
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10. Catheter stylet defined in claim 8 wherein said securing means comprises a material having the characteristics of epoxy.
Specification