Cardiac Pacemakers, Inc.

Kimberly A Jorgensen

Bryan Allen Clark

Arthur J Foster

Daniel J Foster

Thomas J Herbst

Toua Vang

Described is an implantable medical device comprising housing having a distal end and a proximal end, the proximal end fixedly coupled to the distal end of the lead body, a coupler rotatably disposed within the housing, the coupler having a proximal end and a distal end, and a helical electrode fixedly secured to the distal end of the coupler. The helical electrode comprises a proximal axial length portion that comprises a non-degradable material, and a distal axial length portion that comprises a biodegradable material. The proximal and distal portions may include concave/convex surfaces or threaded portions. The coupler and the helical electrode are configured to rotate and therefore translate relative to the housing.

Implantable active fixation lead with biodegradable helical tip

Described is an implantable lead comprising a flexible body extending between a proximal end and a distal end and a distal assembly coupled to the distal end of the body. The distal assembly includes a housing having a distal end and a proximal end, the proximal end fixedly coupled to the distal end of the lead body, a coupler rotatably disposed within the housing, the coupler having a proximal end and a distal end, and a helical electrode fixedly secured to the distal end of the coupler. The helical electrode comprises a proximal axial length portion that comprises a non-degradable material, and a distal axial length portion that comprises a biodegradable material. The coupler and the helical electrode are configured to rotate and therefore translate relative to the housing.

An implantable medical electrical lead includes an extendable/retractable active fixation distal tip assembly. The distal tip assembly includes a shell having an internal cavity and a helix guide member extending at least partially across the cavity and including an axial surface. The distal tip assembly also includes a rotatable coupler within the cavity and a fixation helix fixedly attached to the coupler. The fixation helix engages the helix guide member such that rotation of the coupler and the fixation helix causes the coupler and the fixation helix to advance distally relative to the shell. The coupler further includes a distal rotation stop member protruding axially from the coupler configured to abut the axial surface of the helix guide member to delimit rotation and extension of the coupler and the fixation helix.

Active fixation implantable lead with rotation stop features

An implantable lead may have a distal assembly including a coupler and a fixation helix secured to the coupler. The coupler may include a helical groove that is configured to accommodate the fixation helix. The helical groove may facilitate attaching the fixation helix to the coupler by threading the fixation helix into the helical groove. A weld may provide a secondary attachment between the fixation helix and the coupler.

Active fixation lead with helix securement mechanism

An implantable lead may have a distal assembly including a coupler, a fixation helix secured to the coupler and a housing in which the fixation helix and the coupler are disposed. The distal assembly may include an annular seal that is disposed between the coupler and the housing and that provides an at least substantially fluid-tight seal between the coupler and the housing.

Growing community of inventors

Minneapolis, MN, United States of America

Kimberly A Jorgensen