Catheter with formed guide wire ramp
AssigneeBoston Scientific Scimed, Inc.
InventorsMichael P. Boutilette, James E. Windheuser, Oscar R. Carrillo, Jr.
Life of this patent
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Abstract
A rapid exchange catheter comprises a guide wire lumen including a substantially sealed portion in which a lumen wall extends around an entire periphery thereof and a channel portion including a channel opening the lumen to an exterior of the catheter, wherein a width of the channel is less than a maximum width of the channel portion. A guide wire ramp extends into the channel portion, with the ramp extending further into the lumen of the channel portion as a distal end of the ramp is approached.
Claims20
A catheter, comprising:
- a catheter shaft having a guidewire lumen extending therein, the catheter shaft having an outer surface;
- a first opening in the outer surface, the first opening being disposed proximally of a distal end of the catheter shaft;
- a second opening in the outer surface, the second opening being disposed proximally of the first opening;
- a channel extending through the outer surface extending between the first opening and the second opening, the channel defined by a first wall and a second wall;
- wherein an angled cut is formed in a portion of the first wall of the channel, the angled cut defining a ramp member formed from a portion of the first wall;
- and
- wherein the ramp member extends into the guidewire lumen.
A method for manufacturing a catheter, the method comprising:
- providing a catheter shaft having a guidewire lumen;
- forming an elongated channel in the catheter shaft, the elongated channel defined by a first wall and a second wall, wherein a width of the elongated channel is less than a diameter of the guidewire lumen;
- cutting an angled slit in the first wall to form a partially detached portion of a wall of the catheter shaft;
- and
- shifting the partially detached portion of the first wall radially into the guidewire lumen to form a guidewire ramp.
A method for forming a rapid exchange catheter, the method comprising:
- forming a channel in a catheter having a guidewire lumen, wherein the channel opens a channel portion of the guidewire lumen to an outside of the catheter;
- cutting a slit extending from the channel proximally at an angle to form a partially detached portion of a wall of the catheter;
- and
- moving a distal end of the partially detached portion radially of the wall of the catheter into the guidewire lumen to form a ramp,
- wherein the channel portion includes a pair of walls that are separated from each other along a length of the channel portion and the slit is cut into one of the pair of walls.
Dependencies are inferred from the claim text.