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US 2022/0054036 A1Published application
Surgical ferromagnetic object detection system and method
OwnerAlbert A. Mikhail, Amgad Barsom +3inventors
InventorsAlbert A. Mikhail, Amgad Barsom, Elias Bachaalany, Imad Maalouf, Pierre Touma
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Abstract
A system and/or method for detecting a ferromagnetic object during surgery comprises a probe tip magnetoresistance device configured for insertion into a human or animal cavity and a probe base magnetoresistance device configured for remaining outside the cavity. The system and method detect the ferromagnetic object by comparing the electrical signals generated by the probe tip and the probe base magnetoresistance devices in response to the ambient magnetic field without generating a magnetic field to detect the ferromagnetic object.
Claims20
A surgical system for detecting a ferromagnetic object in a living organism, wherein:
- the system comprises:
- a probe shaft comprising:
- a distal end configured for insertion into the living organism;
- and
- a proximal end configured for remaining outside the organism;
- a probe tip magnetoresistance module wherein the probe tip magnetoresistance module is located at the distal end of the probe shaft;
- a probe base magnetoresistance module wherein the probe base magnetoresistance module is located on the proximal end of the probe shaft;
- the probe tip magnetoresistance module comprises a probe tip X-axis magnetoresistance sensor, a probe tip Y-axis magnetoresistance sensor, and a probe tip Z-axis magnetoresistance sensor wherein the probe tip X-axis sensor, the probe tip Y-axis sensor, and the probe tip Z-axis sensor are responsive to the ambient magnetic field in three orthogonal axes at the distal end of the shaft and wherein:
- the probe tip X-axis magnetoresistance sensor generates a probe tip X-axis electrical signal;
- the probe tip Y-axis magnetoresistance sensor generates a probe tip Y-axis electrical signal;
- and
- the probe tip Z-axis magnetoresistance sensor generates a probe tip Z-axis electrical signal in response to the ambient magnetic field at the distal end of the shaft;
- the probe base magnetoresistance module comprises a probe base X-axis magnetoresistance sensor, a probe base Y-axis magnetoresistance sensor, and a probe base Z-axis magnetoresistance sensor wherein the probe base X-axis sensor, the probe base Y-axis sensor, and the probe base Z-axis sensor are responsive to the ambient magnetic field in three orthogonal axes at the proximal end of the shaft and wherein:
- the probe base X-axis magnetoresistance sensor generates a probe base X-axis electrical signal;
- the probe base Y-axis magnetoresistance sensor generates a probe base Y-axis electrical signal;
- and
- the probe base Z-axis magnetoresistance sensor generates a probe base Z-axis electrical signal
- in response to the ambient magnetic field at the proximal end of the shaft;
- the system is configured to detect the ferromagnetic object in response to a difference between at least one pair of signals selected from the group of:
- the probe tip X-axis electrical signal and the probe base X-axis electrical signal;
- the probe tip Y-axis electrical signal and the probe base Y-axis electrical signal;
- and
- the probe tip Z-axis electrical signal and the probe base Z-axis electrical signal;
- and
- the system is configured for detecting the ferromagnetic object without generating a magnetic field to detect the ferromagnetic object.
22 more elements
A ferromagnetic object detection system, wherein:
- the system comprises a probe shaft that comprises;
- a probe tip magnetoresistance module located at the distal end of the probe shaft wherein the probe tip magnetoresistance module is configured for:
- insertion into a body cavity of a living organism during surgery;
- and
- generating a probe tip X-axis electrical signal, a probe tip Y-axis electrical signal, and probe tip Z-axis electrical signal in response to the ambient magnetic field in three orthogonal axes in the body cavity;
- a probe base magnetoresistance module located at the proximal end of the probe shaft wherein the probe base magnetoresistance module is configured for:
- remaining outside the body cavity;
- and
- generating a probe base X-axis electrical signal, a probe base Y-axis electrical signal and a probe base Z-axis electrical signal in response to the ambient magnetic field in three orthogonal axes outside the body cavity;
- and
- the system is configured to detect the ferromagnetic object in response to a difference in the electrical signals generated by the probe tip magnetoresistance module and the probe shaft magnetoresistance module.
8 more elements
A method for detecting a ferromagnetic object in a body cavity of a living organism during surgery, the method comprising the steps of:
- establishing a probe shaft that comprises;
- a probe tip magnetoresistance module configured for:
- insertion into a body cavity of a living organism during surgery;
- and
- generating a probe tip X-axis electrical signal, a probe tip Y-axis electrical signal, and probe tip Z-axis electrical signal in response to the ambient magnetic field in three orthogonal axes in the body cavity;
- and
- a probe base magnetoresistance module configured for:
- remaining outside the body cavity;
- and
- generating a probe base X-axis electrical signal, a probe base Y-axis electrical signal and a probe base Z-axis electrical signal in response to the ambient magnetic field in three orthogonal axes outside the body cavity;
- and
- detecting the ferromagnetic object in response to a difference in the electrical signals generated by the probe tip magnetoresistance module and the probe shaft magnetoresistance module.
9 more elements
Dependencies are inferred from the claim text.