Low-complexity optical force sensor for a medical device
AssigneeSt. Jude Medical, Atrial Fibrillation Division, Inc.
InventorGleb V. Klimovitch
Life of this patent
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Abstract
An apparatus for detecting deformation of an elongate body may comprise a light source configured to sequentially provide light of multiple frequencies, an optical receiver configured to receive light from the light source, and a filter disposed between the light source and the optical detector. The filter may comprise multiple segments, each of the segments configured to filter light at one of the frequencies so as to alter the amount of light incident on said optical receiver. A total amount of light detected by the optical receiver may change during the sequence so as to be indicative of deformation of the elongate body.
Claims20
An apparatus for detecting deformation of an elongate body, the apparatus comprising:
- a light source configured to provide light of multiple frequencies;
- an optical receiver configured to receive light from said light source;
- and
- a filter disposed between said light source and said optical detector, said filter comprising multiple segments, each of said segments configured to filter light at one of said frequencies so as to alter the amount of light incident on said optical receiver;
- wherein a total amount of light received by said optical receiver is indicative of deformation of the elongate body.
An elongate medical device, comprising:
- an elongate shaft having a distal end portion;
- a light source configured to provide light of multiple frequencies along an optical path, said optical path disposed within said distal end portion of said elongate shaft;
- an optical receiver configured to receive light projected along said optical path;
- and
- a filter disposed in said optical path, said filter comprising multiple segments, each of said segments configured to filter light at one of said frequencies so as to reduce the amount of light incident on said optical receiver.
A system for assessing force on a medical device, the system comprising:
- an electronic control unit (ECU) configured to:
- receive a signal generated by an optical receiver responsive to multiple frequencies of light, the multiple frequencies of light separately received by said optical receiver in a predetermined sequence;
- and
- process said signal in accordance with said predetermined sequence to determine an external force applied to the medical device.
Dependencies are inferred from the claim text.