Catheter with composite stiffener
First Claim
1. A catheter comprising an elongate tabular member having a proximal end, a distal end, and a lumen extending therebetween, the lumen defined by an inner tubular liner, the elongate tubular member comprising:
- a relatively stiff proximal section comprising a metallic stiffener and a non-metallic stiffener, the metallic and non-metallic stiffeners being coaxially wound exterior to a proximal portion of the inner tubular liner; and
a relatively flexible distal section comprising the non-metallic stiffener coaxially wound exterior to a distal portion of the inner liner, the metallic stiffener terminating before reaching the distal section such that the distal section is devoid of a metallic stiffener.
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Abstract
A catheter comprising an elongate tubular member having a proximal end, a distal end, and a passageway defining a lumen extending between the proximal and distal ends. The elongate tubular member comprises a relatively stiff proximal section and a relatively flexible distal section. The proximal section includes an inner tubular liner, a first stiffener comprising a metal alloy, and a second stiffener comprising a non-metal alloy. The first and second stiffeners are coaxially wound exterior to the proximal inner liner. The distal section includes a distal inner tubular liner and the second stiffener coaxially wound exterior to the distal inner liner. The first stiffener terminates before reaching the distal section.
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Citations
41 Claims
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1. A catheter comprising an elongate tabular member having a proximal end, a distal end, and a lumen extending therebetween, the lumen defined by an inner tubular liner, the elongate tubular member comprising:
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a relatively stiff proximal section comprising a metallic stiffener and a non-metallic stiffener, the metallic and non-metallic stiffeners being coaxially wound exterior to a proximal portion of the inner tubular liner; and a relatively flexible distal section comprising the non-metallic stiffener coaxially wound exterior to a distal portion of the inner liner, the metallic stiffener terminating before reaching the distal section such that the distal section is devoid of a metallic stiffener. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A catheter comprising an elongate tubular member having a proximal end, a distal end, and an inner lumen therebetween, the inner lumen defined by an inner tubular liner, the elongate tubular member comprising:
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a relatively stiff proximal section comprising a proximal braid member comprising at least one metal strand interwoven with at least one non-metal strand, and a proximal outer cover, the at least one metal strand and the at least one non-metal strand of the braid being coaxially wound exterior to the inner tubular liner; and a relatively flexible distal section comprising the inner tubular liner and a distal braid member comprising the at least one non-metal strand of the proximal braid member, and a distal outer cover, the at least one metal strand of the proximal braid member terminating before reaching the distal section, such that the distal section is devoid of the at least one metal strand of the proximal braid member. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A catheter comprising an elongate tubular member having a proximal end, a distal end, and a lumen extending therethrough, the catheter comprising:
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a proximal section comprising a metallic stiffener interwoven with a non-metallic stiffener to form a braid member; and a distal section comprising the non-metallic stiffener of the proximal section, and wherein the metallic stiffener of the proximal section terminates proximal the distal section such that the distal section is devoid of a metallic stiffener.
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Specification