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RELEASABLE TORQUE DEVICE

[Category : - HEALTH]
[Viewed 1319 times]

The releasable torque device obviates the need for removal of the wire introducer in order to torque or manipulate a vascular or other guide wire and/or catheter in a medical procedure, and further obviates the need to remove the torque device for wire and/or catheter introduction. The device may include a base cylinder and an inflation cylinder defining a variable fluid volume therebetween. As the inflation cylinder is pushed toward the base cylinder, the fluid is forced through a port in the inner wall of the inflation cylinder and between a tubular inner cylinder and an inflatable guide wire grip within the inner cylinder to squeeze the grip onto the guide wire passing axially therethrough. Alternatively, the device only has a central tube and an inflatable guide wire grip therein, using a remotely disposed fluid pump and reservoir supplying fluid to the tube and guide wire grip.

NOVELTY
The releasable torque device has an elongate, selectively inflatable guide wire grip arranged within the rigid tube. The guide wire grip has a first end, second end, inward facing guide wire contact surface, rigid tube and guide wire grip defining a selectively variable guide wire grip inflation chamber. The rigid tube defining an axially open guide wire passage extending through the tube. A selectively operable, variable volume master inflation chamber, inflation port fluidly connecting the master inflation chamber with the guide wire grip inflation chamber.

USE
Releasable torque device for introduction and torsional manipulation of guide wire.

ADVANTAGE
The guide wire grip can be selectively expanded inside the surrounding tube to squeeze the guide wire grip onto a guide wire inserted through the axially open center of the guide wire grip by permitting the guide wire to be torqued by rotating the releasable torque device. The releasable torque device provides for the manipulation of a catheter guide wire without need to remove the introducer to apply a separate guide wire torqueing device. The guide wire grip has a high friction guide wire contact surface to enhance the clamping action of the guide wire grip on the guide wire.

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