Catheter With Formed Guide Wire Ramp
AssigneeBoston Scientific Scimed, Inc.
InventorsMichael P. BOUTILETTE, James E. WINDHEUSER, Oscar CARRILLO
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.
Claims23
1-20. (canceled)
A method for forming a rapid exchange catheter comprising the steps of:
- forming a catheter including a guide wire lumen extending through at least a portion thereof;
- forming a channel opening a channel portion of the guide wire lumen to an outside of the catheter, wherein a width of the channel is less than a diameter of the lumen;
- cutting a slit extending from the channel proximally at an acute angle thereto to form a partially detached portion of a wall of the catheter;
- and
- moving a distal end of the partially detached portion radially into the lumen to form a ramp.
A method for forming a rapid exchange catheter comprising the steps of:
- forming a catheter including a guide wire lumen extending through at least a portion thereof;
- forming a channel opening a channel portion of the guide wire lumen to an outside of the catheter, wherein a width of the channel is less than a diameter of the lumen;
- cutting a slit extending from the channel proximally at an acute angle thereto to form a partially detached portion of a wall of the catheter;
- and
- moving a distal end of the partially detached portion radially into the 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 cutting step includes cutting the slit only in one of the walls of the channel portion.
A method for forming a rapid exchange catheter comprising the steps of:
- forming a catheter including a guide wire lumen extending through at least a portion thereof;
- forming a channel opening a channel portion of the guide wire lumen to an outside of the catheter, wherein a width of the channel is less than a diameter of the lumen;
- cutting a slit extending from the channel proximally at an acute angle thereto to form a partially detached portion of a wall of the catheter;
- and
- moving a distal end of the partially detached portion radially into the 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,
- the cutting step includes cutting the slit only in one of the walls of the channel portion,
- the ramp corresponds to a substantially triangular portion of a surface of the catheter,
- the substantially triangular portion includes a first side corresponding to the only one of the walls that has been cut and a second side corresponding to the slit, and
- the first side and the second side of the substantially triangular portion intersect at the acute angle.
A method for forming an opening in a catheter having a guide wire lumen, comprising the steps of:
- forming a channel opening a channel portion of the guide wire lumen to an outside of the catheter, wherein a width of the channel is less than a diameter of the lumen;
- cutting a slit extending from the channel proximally at an acute angle thereto to form a partially detached portion of a wall of the catheter;
- and
- moving a distal end of the partially detached portion radially into the lumen to form a ramp.
Dependencies are inferred from the claim text.