US 8,523,808 B2Granted

Medical device control handle with independent self holding puller wire actuators

AssigneeBiosense Webster (Israel) Ltd.

InventorThomas V. Selkee

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Abstract

A medical device control handle has a first actuation member for actuating at least one puller wire in one manipulation of a medical device, including uni-directional deflection, if not a pair of puller wires for bi-directional deflection of a catheter, and a second actuation member for actuating an additional puller wire in another manipulation of the medical device, wherein the first and second actuation members have a common rotational axis without being rotationally coupled. In one embodiment, a first actuation assembly has a first actuator, an arm rotatable about an axis, and a first shaft. The first deflection actuator and the arm are rotationally coupled by the rotation shaft, and the arm has at least one pulley that is engaged with a puller wire. The second wire actuation assembly has a second actuator and a second shaft having a spool portion. Each actuation assembly has a friction-inducing element that provides friction torque between components of each assembly such that the actuators are self-holding.

Claims12

Dependent claims

A control handle for a medical device having at least a first feature and a second feature subject to manipulation by a user, the medical device further having at least a first puller wire and a second puller wire for manipulating the first and second features, respectively, the control handle comprising:

a housing with a first housing portion and a second housing portion;
a first actuation assembly and a second actuation assembly being independently rotatable about a common rotational axis,
the first actuation assembly comprising a first actuator, an arm rotatable about said common rotational axis, and a first shaft, the first actuator and the arm being rotationally coupled by the first shaft;
the arm having at least one pulley, the first puller wire engaged with the at least one pulley;
the second actuation assembly comprising a second actuator and a second shaft having a spool portion,
wherein rotation of the first actuator rotates the arm in moving the at least one pulley to draw the first puller wire to manipulate the first feature of the medical device and wherein rotation of the second actuator wraps the second puller wire on the spool portion to manipulate the second feature of the medical device.

3 more elements

Dependencies are inferred from the claim text.