Catheter with knit section
First Claim
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1. A method for manufacturing a catheter shaft, the method comprising:
- forming an inner polymeric tubular member;
knitting an intermediate member from a single strand of wire;
disposing the intermediate member over the inner tubular member; and
disposing an outer tubular member over the intermediate member and the inner tubular member.
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Abstract
A catheter section 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 includes a knit tubular member and an inner tubular liner in coaxial relationship with the knit tubular member. The catheter section is for use as a distal section in a catheter having a relatively stiff proximal section.
83 Citations
19 Claims
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1. A method for manufacturing a catheter shaft, the method comprising:
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forming an inner polymeric tubular member; knitting an intermediate member from a single strand of wire; disposing the intermediate member over the inner tubular member; and disposing an outer tubular member over the intermediate member and the inner tubular member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for manufacturing a multi-layered catheter shaft having a proximal end, a distal end, and a passageway defining a distal end disposed between the proximal end and the distal end, the method comprising:
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forming an inner polymeric tubular member; knitting an intermediate member from a single wire to form a plurality of up loops interlocking with a plurality of down loops; disposing the intermediate member over the inner tubular member; and disposing an outer tubular member over the intermediate member and the inner tubular member; wherein the distal end of the catheter shaft is more flexible than the proximal end. - View Dependent Claims (12, 13, 14)
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15. A method for manufacturing a catheter shaft having a proximal end, a distal end, and a passageway defining a distal end disposed between the proximal end and the distal end, the method comprising:
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forming an inner polymeric tubular member having a proximal end and a distal end; knitting an intermediate tubular member from a single wire to form a plurality of up loops interlocking with a plurality of down loops; disposing the intermediate tubular member over a distal portion of the inner tubular member; disposing a stiffening member over a proximal portion of the inner tubular member; and disposing an outer tubular member over the intermediate tubular member, the stiffening member, and the inner tubular member; wherein the distal end of the catheter shaft is more flexible than the proximal end. - View Dependent Claims (16, 17, 18, 19)
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Specification