Surgery – Truss – Pad
Patent
1983-08-18
1986-09-02
Howell, Kyle L.
Surgery
Truss
Pad
128748, A61B 505
Patent
active
046089926
ABSTRACT:
A technique for transmitting from within the body information concerning an internal parameter (e.g., a measurement of a physiopathological parameter or a parameter generated by an implanted pacemaker), without physical connections to the implanted device, without an externally applied or internally generated electromagnetic field, and without implantation of radioactive material. The implanted device generates a magnetic field having an orientation influenced by changes in the internal parameter. The field is generated by one or more permanent magnets in the implanted device. The orientation of the field is detected externally using a viewer that provides a display indicative of the orientation. The display may provide an image of the magnetic field (e.g., a compass needle or magnetometer) that aligns itself with the field in a known manner. The magnetic field can be generated by a rotatable element on which are carried one or more permanent magnets (e.g., a disk of a magnetic alloy such as samarium cobalt on which has been impressed one or more magnetic regions). In some embodiments the image seen in the viewer is in the form of a pointer (e.g., an arrow) and is provided by implanted magnets that have a north/south boundary of the same shape. If the internal parameter is a fluid pressure, the implanted device may include a diaphragm manometer with a rotatable drum (e.g., rotated by levers connected to the diaphragm and arranged to pull a thread wrapped around the drum) on which is mounted the previously mentioned disk with impressed magnetic regions.
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Hakim Carlos A.
Hakim Salomon
Howell Kyle L.
Lee G. Roger
Sykes Angela D.
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