Surgery – Diagnostic testing – Flexible catheter guide
Reexamination Certificate
2006-05-30
2006-05-30
Schaetzle, Kennedy (Department: 3762)
Surgery
Diagnostic testing
Flexible catheter guide
C600S151000, C606S129000, C606S108000, C128S899000
Reexamination Certificate
active
07052473
ABSTRACT:
A device for configuring a body insert, such as an electrode lead for a stimulation device, has a wire arrangement adapted to be inserted into the interior of the body insert for stiffening and bending the body insert. The wire arrangement has a tip section which, when the wire arrangement is inserted in the body insert, resides at the distal end thereof. The tip section has a bendable insulating polymer element which contains a number of bending actuators connected in series. The bending actuators are formed by successive silicon sections interconnected by polyimide-filled V-groove joints in thermal communication with a heating element. The operation of the heating element from a regulation unit adapted for access at a proximal end of the body insert controls expansion of the polyimide filling the joints, thereby producing a selected amount of bending at the tip section and the distal end section of the body insert.
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“New Small Radius Joints Based on Thermal Shrinkage of Polyimide in V-grooves fro Robust Self-Assembly 3D Microstructures,” Ebefors et al., J. Microtech. Microeng., vol. 8 (1998) pp. 188-194.
“Dynamic Actuation Of Polyimide V-Groove Joints By Electrical Heating”, Ebefors et al., Sensors and Actuators, vol. A-67 (1998) pp. 199-204.
Schaetzle Kennedy
Schiff & Hardin LLP
St. Jude Medical AB
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