Magnetically shielded aimd housing with window for magnetically actuated switch
AssigneeGreatbatch-Sierra, Inc.
InventorsHaytham Hussein, Christine Frysz, Robert Stevenson
Life of this patent
Estimating the term…
Abstract
An active implantable medical device (AIMD) having a magnetic shield on its housing for shielding the interior of the device from magnetic fields originating outside the housing. The magnetic shield is created using a magnetic absorbing coating on the inner surface of the housing. The AIMD includes an area of the housing left without the magnetic shield, a magnetic window, adjacent to a magnetically actuated device located inside of the housing. The magnetic window permits activation of the magnetically actuated device.
Claims34
An active implantable medical device, comprising:
- a housing having a terminal through which a lead wire extends;
- a magnetically actuated device disposed within the housing;
- and
- a magnetic shield disposed adjacent to the housing for shielding an interior of the housing from magnetic fields originating exteriorly of the housing, the magnetic shield including a window adjacent to the magnetically actuated device.
An active implantable medical device, comprising:
- a housing having a terminal through which a lead wire extends, wherein the housing comprises an electrical shield;
- a magnetically actuated device disposed within the housing;
- a magnetic shield disposed adjacent to the housing for shielding an interior of the housing from magnetic fields originating exteriorly of the housing, the magnetic shield including a window adjacent to the magnetically actuated device;
- a sub-housing for the magnetically actuated device, the sub-housing overlaying the magnetic shield window so that the magnetically actuated device is disposed between the window and the sub-housing;
- and
- a secondary magnetic shield disposed adjacent to the sub-housing.
An active implantable medical device, comprising:
- a housing having a terminal insulator through which a lead wire extends, and a terminal magnetic shield;
- a magnetically actuated device disposed within the housing;
- a magnetic shield disposed adjacent to the housing for shielding an interior of the housing from magnetic fields originating exteriorly of the housing, the magnetic shield including a window adjacent to the magnetically actuated device;
- a sub-housing for the magnetically actuated device, the sub-housing overlaying the magnetic shield window so that the magnetically actuated device is disposed between the window and the sub-housing;
- and
- a secondary magnetic shield disposed adjacent to the sub-housing.
The active implantable medical device of claim 27, wherein the AIMD comprises a cardiac pacemaker, an implantable defibrillator, a congestive heart failure device, a hearing implant, a cochlear implant, a neurostimulator, a drug pump, a ventricular assist device, an insulin pump, a spinal cord stimulator, an implantable sensing system, a deep brain stimulator, an artificial heart, an incontinence device, a vagus nerve stimulator, a bone growth stimulator, a gastric pacemaker, or a prosthetic device.
Dependencies are inferred from the claim text.