Catheter having an improved torque transmitting shaft
AssigneeSciMed Life Systems, Inc.
InventorTracee E.J. Eidenschink
Life of this patent
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Abstract
The present invention relates generally to a catheter having a torque transmitting shaft which retains adequate flexibility. The catheter includes an elongate shaft having an outer surface. In a preferred embodiment, a raised pattern is disposed on the outer surface. Preferably, the raised pattern improves the transmission of torque along the elongate shaft by including a series of bearing points which contact other bearing points along the shaft when torqued.
Claims22
A catheter having a torque transmitting shaft, comprising:
- an elongate shaft having an outer surface;
- and
- a raised pattern disposed on the outer surface, wherein the raised pattern defines means for improving the transmission of torque along the elongate shaft when torqued.
A catheter having a torque transmitting shaft, comprising:
- an elongate shaft having a proximal end, a distal end, a lumen extending therethrough, a core member having a proximal end and distal end, an inner surface, and an outer surface, wherein the inner surface is in fluid communication with the lumen;
- and
- a raised pattern disposed on the outer surface, the raised pattern further comprising a plurality of bearing points, wherein the raised pattern improves the transmission of torque along the elongate shaft by contact between the bearing parts.
A method of generating torque transmittance within a catheter shaft, comprising the steps of:
- providing a catheter comprising an elongate shaft having an outer surface;
- and
- disposing a raised pattern on the outer surface, wherein the raised pattern forms means for improving the transmission of torque along the elongate shaft.
Dependencies are inferred from the claim text.