SECURING AN IMPLANTABLE MEDICAL DEVICE IN POSITION WHILE REDUCING PERFORATIONS

摘要

Methods and systems of making a medical electrical lead type having a set of tines. A system for implantation of a lead medical electrical lead in contact with heart tissue, comprises an elongated lead body; a set of curved tines mounted to and extending from a distal end of the lead body, the tines having a length (dD) and an effective cross sectional area, and a delivery catheter. The delivery catheter encloses the lead body and has a distal capsule portion enclosing the tines. The tines exerting a spring force against the capsule and provide a stored potential energy. The delivery catheter has an elastic, not stiff and low column strength ejection means for advancing the lead and tines distally from the capsule and fixating the tines within the heart tissue, the controllable and the stored potential energy of the tines together provide a deployment energy. The tines when so fixated in the tissue provide a fixation energy. The deployment energy and the fixation energy of the tines are equivalent.

主权项

1. A system for implantation of a lead medical electrical lead in contact with heart tissue, comprising:
an elongated lead body; a set of curved tines mounted to and extending from a distal end of the lead body, the tines having a length (dD) and an effective cross sectional area; a delivery catheter, enclosing the lead body and having a distal capsule portion enclosing the tines, the tines exerting a spring force against the capsule and providing a stored potential energy, the delivery catheter having an ejection means for advancing the lead and tines distally from the capsule and fixating the tines within the heart tissue, the ejection means and the stored potential energy of the tines together providing a deployment energy, the tines when so fixated in the tissue providing a fixation energy; and wherein the deployment energy and the fixation energy are equivalent.