Brake mechanism of a steerable catheter
AssigneeCook Medical Technologies LL
InventorsVictor Simmons, Travis E. Dillon
Life of this patent
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Abstract
A steerable catheter includes a brake mechanism with a knob mounted to a catheter handle body. The knob is rotatable around a knob axis, and the catheter handle body includes at least one steering control spool rotatable around a spool axis that is orthogonal to the knob axis. The knob contacts and rotates in a limited arc along a recessed handle body surface between stop surfaces. A frictional braking element in mechanical communication, along the knob axis, with the knob is disposed adjacent the at least one steering control spool and actuatable into and out of contact with a contact surface of the at least one spool upon rotation of the knob around the knob axis.
Claims20
A steerable catheter with a braking mechanism, the steerable catheter comprising:
- a proximal handle body from which extends distally an elongate steerable catheter body including a deflectable distal catheter body end;
- where the proximal handle body includes:
- at least a first control wheel in mechanical communication, via a first spool, with the distal catheter body end, where the at least a first control wheel and the first spool are rotatable around a common control wheel axis;
- a brake knob mounted rotatingly to the proximal handle body and configured to rotate around a brake knob axis that is non-coaxial with the control wheel axis;
- a brake arm in mechanical communication with the brake knob and disposed between the brake knob and the first spool, said brake arm including at least one spool-engagement surface;
- and
- ramped and planar handle body surfaces that complementarily interface with ramped and planar brake knob surfaces such that
- in a first brake-actuation knob position the at least one spool-engagement surface does not contactingly engage the first spool, and
- in a second brake-actuation knob position the at least one spool-engagement surface does contactingly engage the first spool, configured such that movement between the first and second brake-actuation knob positions is along the brake knob axis.
A steerable catheter with a brake mechanism, the brake mechanism comprising:
- a knob mounted to a catheter handle body, said knob being rotatable, relative to the handle body, around a knob axis;
- where the catheter handle body includes at least one steering control spool rotatable around a spool axis that is orthogonal to the knob axis;
- a handle ramped surface separated from a handle stop-surface, where a handle-contacting knob surface is movable across the handle ramped surface and not movable past the handle stop-surface;
- and
- a frictional braking element in mechanical communication, along the knob axis, with the knob, said braking element disposed adjacent the at least one spool and actuatable into and out of contact with a contact surface of the at least one spool upon rotation of the knob around the knob axis.
Dependencies are inferred from the claim text.