Medical electrode assembly
AssigneeCaradiac Pacemakers, Inc.
InventorsBrian Soltis, Geordie Alfson, Louis M. Buesseler, Walt Laroche, Jason J. Skubitz
Life of this patent
Estimating the term…
Abstract
A medical lead for tissue stimulation and sensing is provided, the lead having an electrode with an active fixation mechanism. The active fixation mechanism using a conductive spring element or wave washer to maintain electrical contact after extension of the active fixation mechanism. The active fixation mechanism is engaged by rotating a piston within the electrode housing which advances the fixation mechanism distally.
Claims9
A medical electrode, comprising:
- (a) an electrode base;
- (b) a generally hollow electrode housing defining a cavity, the electrode housing being connected to the electrode base at a proximal end of the housing and including internal housing threads and a distal end;
- (c) a piston having external threads rotatably mounted within said cavity and said internal housing threads to thereby move along said housing upon relative rotation for extending and retracting;
- (d) a screw helix electrode and anchor attached to said piston to rotate therewith;
- and
- (e) a resilient conductor for maintaining electrical conductivity between said piston and said electrode base.
A method of maintaining electrical continuity in a medical electrode comprising the step of inserting a resilient conductor device between said piston and said electrode base to maintain positive electrical conductivity therebetween.
Dependencies are inferred from the claim text.