Magnetically-coupled implantable medical devices

Details Magnetically-coupled implantable medical devices Magnetically-coupled implantable medical devices

A - Human Necessities

61

M

A61M 1/12 (2006.01) A61B 17/58 (2006.01) A61F 2/00 (2006.01) A61M 1/10 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2189423

A medical apparatus includes an external drive magnet (24) mounted for rotation externally of a subject's body, an implantable driven magnet (25) configured and dimensioned to be implantable in the subject's body and mounted for rotation by magnetically coupling with the drive magnet and an implantable device mechanically coupled to the driven magnet to be driven thereby. The driven magnet is mountable for rotation in the subject's body about an axis of rotation (25a) of the external drive magnet such that the magnetic poles of the external drive magnet are magnetically coupled sequentially with the magnetic poles of the implanted driven magnet to rotate the implanted driven magnet, thereby providing flexibility in the location, design and dimensions of the implanted driven magnet, and in the speed and torque ratios between the two magnets.

Appareil médical comportant un aimant extérieur menant (24) monté tournant à l'extérieur du corps du patient, un aimant implantable mené (25) conçu et dimensionné en vue de son implantation dans le corps du patient et pouvant être entraîné en rotation par couplage magnétique avec l'aimant menant. L'aimant mené peut tourner dans le corps du patient autour de l'axe de rotation (25a) de l'aimant menant dont les pôles magnétiques couplés séquentiellement à ceux de l'aimant mené font tourner ce dernier. On obtient ainsi une grande souplesse en matière de positionnement, de conception et de dimensionnement de l'aimant implanté, et de rapport de vitesses de rotation et de couples entre les deux aimants.

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