Abstract: Systems, methods, devices and computer software for delivering electrical stimulation to biological tissue are described. In some implementations, an electrical lead for implantation in a patient can include a distal portion with electrodes that are configured to generate therapeutic energy for biological tissue of the patient, such as the heart or pericardium. The distal portion can include an electrode extension having a tip electrode, the electrode extension configured to facilitate contact of the tip electrode with biological tissue of the patient when the lead is in a deployed configuration. A distal part of the lead can be configured to include a heel portion, a bend in a proximal part, and/or a bend in a distal part, to facilitate contact of an electrode located on the heel portion with biological tissue of the patient when the lead is in a deployed configuration.

Abstract: Disclosed are systems and methods that include inserting an electrical lead having a proximal portion configured to engage a controller, the controller configured to cause one or more electrodes to generate therapeutic energy and a distal portion coupled to the proximal portion. The distal portion includes one or more electrodes that are configured to generate the therapeutic energy for biological tissue of a patient. The method also includes fitting a lead anchor on a proximal part of the electrical lead, an exterior of the lead anchor comprising fixation features for facilitating fixation to patient tissue and securing the electrical lead to patient tissue by fixating the lead anchor to the patient tissue.

Abstract: Fixation devices are disclosed herein that can be used to secure to a catheter. The fixation devices include a body having a central bore extending therethrough to receive a catheter and at least one end having a tapered profile tapering inwardly a distal edge thereof. The body can include an expanded intermediate portion, such as one or more bulbous portions. The fixation devices can also include suture openings or grooves to secure the devices to tissue.

Abstract: Systems and methods are disclosed that include inserting an insertion dilator into an insertion sheath such that the insertion dilator extends out from a distal end of an insertion sheath, penetrating patient skin with the insertion dilator to push the insertion sheath through the skin to reach a particular depth, removing the insertion dilator from the insertion sheath, inserting a delivery system into the insertion sheath, and deploying a lead by advancing the lead through an insertion tip of the delivery system.

Abstract: Fixation devices are disclosed herein that can be used to secure to a catheter. The fixation devices include a body having a central bore extending therethrough to receive a catheter and at least one end having a tapered profile tapering inwardly a distal edge thereof. The body can include an expanded intermediate portion, such as one or more bulbous portions. The fixation devices can also include suture openings or grooves to secure the devices to tissue.