초록 ▼

A method of applying a magnetic medical device to the surface of an internal body structure, the medical device having a magnetically responsive element associated with its distal end, the method comprising applying a magnetic field to the distal end of the magnetic medical device to apply a measure

A method of applying a magnetic medical device to the surface of an internal body structure, the medical device having a magnetically responsive element associated with its distal end, the method comprising applying a magnetic field to the distal end of the magnetic medical device to apply a measured and controlled force between the medical device and tissue to facilitate cardiac sensing, mapping, pacing, ablation, biopsying and other procedures. Contact is confirmed by the angle between the direction of the magnetic medical device and the applied magnetic field, and the contact force is controlled by controlling at least one of the magnetic field direction and the magnetic field strength.

대표청구항 ▼

[ What is claimed is:] [38.]38. A system for making contact between a catheter and points on the surface of an internal body structure in which magnetic forces are applied;a source magnet for applying a magnetic field of changeable direction and strength within an operating region in a patient;a mag

[ What is claimed is:] [38.]38. A system for making contact between a catheter and points on the surface of an internal body structure in which magnetic forces are applied;a source magnet for applying a magnetic field of changeable direction and strength within an operating region in a patient;a magnetic medical device adapted to be introduced into the operating region in the patient, having a magnet element, responsive to the magnetic field of the source magnet, associated with its distal end;a localization device for determining the orientation of the distal end portion of the medical device;a processor for comparing the direction of the distal end of the catheter and the direction of the applied magnetic field and adjusting the direction and/or strength of the magnetic field to cause the distal end of the magnetic medical device to press against the surface of the body structure with a predetermined force.