Temporary pacing guidewire

A guidewire for temporary pacing of tissue, the guidewire including a guidewire proximal end, a guidewire distal end, and a guidewire length extending from the guidewire proximal end to the guidewire distal end, the guidewire comprising:

• an elongate core wire, the core wire including a core proximal end, a core distal end, and a core length extending from the core proximal end to the core distal end, the core wire including a core axis along the length of the core wire;
• a coil disposed along at least a portion of the length of the core wire, the coil including a coil length and a coil axis along the length of the coil, the coil including a first pitch along at least some of the length of the coil, the coil being disposed radially outwardly from and around the core wire, wherein the core axis and the coil axis are substantially aligned;
• and
• at least one electrode disposed along the guidewire, the at least one electrode including an uninsulated portion of the core wire disposed within an electrode section of the coil, the electrode section of the coil including a second pitch greater than the first pitch, wherein the coil of the electrode section having the second pitch includes a distance between adjacent windings of the coil that is greater than a distance between adjacent windings of the coil having the first pitch, such that a spacing between adjacent windings of the electrode section of the coil is configured to allow a stimulation pulse to travel from the uninsulated portion of the core wire, through the spacing between the adjacent windings of the electrode section, and to the tissue in order to stimulate the tissue.

A guidewire for temporary pacing of tissue, the guidewire including a guidewire proximal end, a guidewire distal end, and a guidewire length extending from the guidewire proximal end to the guidewire distal end, the guidewire comprising:

• an elongate core wire, the core wire including a core proximal end, a core distal end, and a core length extending from the core proximal end to the core distal end, the core wire including a core axis along the length of the core wire, wherein the core wire includes insulation along at least a portion of the core wire;
• a coil disposed along at least a portion of the length of the core wire, the coil including a coil length and a coil axis along the length of the coil, the coil including a first pitch along at least some of the length of the coil, the coil being disposed radially outwardly from and around the core wire, wherein the core axis and the coil axis are substantially aligned;
• and
• two or more electrodes disposed along the guidewire, each of the electrodes including an uninsulated portion of the core wire disposed within an electrode section of the coil, the electrode section of the coil including a second pitch greater than the first pitch, the coil of the electrode section having the second pitch including a distance between adjacent windings of the coil that is greater than a distance between adjacent windings of the coil having the first pitch, such that a spacing between adjacent windings of the electrode section of the coil is configured to allow a stimulation pulse to travel from the uninsulated portion of the core wire, through the spacing between the adjacent windings of the electrode section, and to the tissue in order to stimulate the tissue.