Abstract: An implantable medical lead with a fixation ridge is disclosed. The implantable medical lead includes a lead body extending between a proximal end and a distal portion having a distal end. The lead body includes lead body outside diameter. A conductor is disposed within the lead body and extends along a length of the lead body. An electrode is coupled to the conductor, and the electrode disposed on the lead body at the distal portion. A fixation mechanism comprising a ridge is disposed on the lead body at the distal portion, the fixation mechanism includes a fixation mechanism outside diameter that is greater than the lead body outside diameter.

Abstract: Systems and methods involve an intrathoracic cardiac stimulation device operable to provide autonomous cardiac sensing and energy delivery. The cardiac stimulation device includes a housing configured for intrathoracic placement relative to a patient's heart. A fixation arrangement of the housing is configured to affix the housing at an implant location within cardiac tissue or cardiac vasculature. An electrode arrangement supported by the housing is configured to sense cardiac activity and deliver stimulation energy to the cardiac tissue or cardiac vasculature. Energy delivery circuitry in the housing is coupled to the electrode arrangement. Detection circuitry is provided in the housing and coupled to the electrode arrangement. Communications circuitry may optionally be supported by the housing. A controller in the housing coordinates delivery of energy to the cardiac tissue or cardiac vasculature in accordance with an energy delivery protocol appropriate for the implant location.

Abstract: Systems and methods involve an intrathoracic cardiac stimulation device operable to provide autonomous cardiac sensing and energy delivery. The cardiac stimulation device includes a housing configured for intrathoracic placement relative to a patient's heart. A fixation arrangement of the housing is configured to affix the housing at an implant location within cardiac tissue or cardiac vasculature. An electrode arrangement supported by the housing is configured to sense cardiac activity and deliver stimulation energy to the cardiac tissue or cardiac vasculature. Energy delivery circuitry in the housing is coupled to the electrode arrangement. Detection circuitry is provided in the housing and coupled to the electrode arrangement. Communications circuitry may optionally be supported by the housing. A controller in the housing coordinates delivery of energy to the cardiac tissue or cardiac vasculature in accordance with an energy delivery protocol appropriate for the implant location.

Abstract: A lead body for use with medical devices and method for lead body manufacture are provided. The lead body defines a lumen. The lumen has an electrically conductive material deposited on the lumen wall. The lead body's manufacture includes coating a lumen wall of a lead body with a conductive material to provide a conductor between the proximal and distal ends of the lead body. The manufacture further includes fitting sleeves electrically connected to electrical elements within the lumen to provide an electrical connection between the sleeve and the conductive material.