Tri-directional articulating catheter
First Claim
Patent Images
1. A catheter for accessing an interior site of a mammalian subject comprising:
- a. an elongate catheter body having a distal tip and a proximal end, a central working lumen running from the distal tip to the proximal end, first and second opposed peripheral lumens on an exterior surface of said central working lumen, said peripheral lumens in a plane of articulation relative to one another, first and second steering wires disposed through each of said first and second peripheral lumens, b. an attachment at the distal tip for attaching the steering wires disposed through said peripheral lumens and c. means for applying selective tension to the steering wires, said means located at the proximal end, wherein the distal tip steerable by the first and second steering wires comprises a flexible non-compressible material so that application of selective tension to the first or second steering wire causes a bend in a direction within the plane of articulation at the distal tip, said bend accomplished while a length of the elongate catheter at the distal tip along said bend resists compression of the central working lumen.
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Abstract
A catheter capable of articulating in two and three directions is provided. Articulation at the distal tip of the catheter is facilitated by applying selective tension on a steering wire disposed in a lumen that resides peripheral to a central working lumen. Tension on the steering wire through the peripheral lumen causes the catheter tip to bend while the central working lumen resists compression.
62 Citations
24 Claims
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1. A catheter for accessing an interior site of a mammalian subject comprising:
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a. an elongate catheter body having a distal tip and a proximal end, a central working lumen running from the distal tip to the proximal end, first and second opposed peripheral lumens on an exterior surface of said central working lumen, said peripheral lumens in a plane of articulation relative to one another, first and second steering wires disposed through each of said first and second peripheral lumens, b. an attachment at the distal tip for attaching the steering wires disposed through said peripheral lumens and c. means for applying selective tension to the steering wires, said means located at the proximal end, wherein the distal tip steerable by the first and second steering wires comprises a flexible non-compressible material so that application of selective tension to the first or second steering wire causes a bend in a direction within the plane of articulation at the distal tip, said bend accomplished while a length of the elongate catheter at the distal tip along said bend resists compression of the central working lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 18, 19, 20, 21, 22, 23, 24)
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14. A catheter for accessing an interior site of a mammalian subject comprising:
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a. an elongate catheter body having a distal tip and a proximal end, a central working lumen running from the distal tip to the proximal end, b. a peripheral lumen located on the exterior surface of said central working lumen having a steering wire disposed therethrough, said steering wire having a first attachment at the distal tip and a second attachment at the proximal end, and c. means for applying selective tension to the steering wire, said means located at the proximal end, wherein application of selective tension to the steering wire causes a bend in a direction of the elongate catheter, said bend accomplished while the length of the elongate catheter at the distal tip along said bend resists compression of the central working lumen, and comprising a plurality of peripheral lumens disposed circumferentially on the exterior surface of said central working lumen, said peripheral lumens available for instrument access to the interior site in the mammalian subject. - View Dependent Claims (15)
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17. (canceled)
Specification