Coronary venous lead having fixation mechanism

Details Coronary venous lead having fixation mechanism Coronary venous lead having fixation mechanism

A - Human Necessities

61

N

A61N 1/05 (2006.01)

Patent

CA 2321295

A body implanted lead (10) for placement in a selected coronary vein includes a resilient retention structure (26) for inhibiting displacement of the lead because of heart beat action, breathing or other body movement. The retention structure includes a plurality of resilient projections (30) that are attached to the lead body, and which are adapted to project at a predetermined acute angle to the axis of the lead body when unconstrained. Prior to being routed through the vascular system, the projections can be bonded (36) to the lead body to provide a low profile with a biodegradable adhesive. Following exposure to body fluids, the adhesive dissolves, releasing the projections so that they can engage the walls of the vein in which the lead is disposed.

L'invention porte sur un conducteur (10) implantable dans le corps se posant dans une veine coronaire sélectionnée et comprenant une structure (26) élastique de retenue destinée à en empêcher les déplacements sous l'effet des battements du coeur, de la respiration, ou d'autres mouvements du corps. La structure de retenue comprend plusieurs protubérances (30) élastiques fixées au corps et en saillant, qui forment en position non contrainte un angle aigu prédéterminé avec l'axe du corps. Avant leur introduction dans le système vasculaire, les protubérances sont liées (36) au moyen d'un adhésif biodégradable autour du corps du conducteur de manière rendre sa section plus étroite. Exposé aux fluides corporels l'adhésif se dissout et relâche les protubérances qui entrent en contact avec les parois de la veine où se trouve le conducteur.

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