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US 11,864,878 B2Granted
Devices and methods for determining blood flow around a body lumen
AssigneeBoston Scientific Scimed, Inc.
InventorsGeorge Wilfred Duval, Michael Y. Ko, James Weldon, Namita M. Kallur
Life of this patent
Estimating the term…
Abstract
A system may include an expandable member, and a plurality of sensors disposed on an outer surface of the expandable member and circumferentially spaced apart from one another, wherein each of the plurality of sensors includes a first emitter configured to emit light of a first wavelength, and a detector configured to detect light, and a controller coupled to the plurality of sensors.
Claims20
A medical device, comprising:
- a catheter;
- an optical sensor disposed at or adjacent to a distal end of the catheter, the optical sensor including a photodetector and one or more emitters, the photodetector and each of the one or more emitters of the optical sensor being disposed linearly along a longitudinal axis of the catheter;
- and
- a controller disposed within the catheter, the controller being configured to determine a thickness of tissue adjacent to the optical sensor based on input from the optical sensor;
- wherein the one or more emitters are configured to collect a diffusion gradient of reflected and absorbed light in the tissue adjacent to the optical sensor.
2 more elements
A medical device, comprising:
- a catheter having a proximal end and a distal end;
- a flexible printed circuit board disposed on the distal end of the catheter;
- an optical sensor mounted on the flexible printed circuit board at the distal end of the catheter, the optical sensor including a photodetector and a plurality of emitters, the photodetector and each of the plurality of emitters are positioned in a linear arrangement relative to one another;
- and
- a controller configured to determine a thickness of tissue positioned adjacent to the distal end based on input from the optical sensor.
2 more elements
A medical device, comprising:
- a catheter including a proximal end, a distal end having a semicircular cross-section, and a substrate including a flexible printed circuit board disposed over the distal end;
- an optical sensor mounted on the substrate at the distal end of the catheter, wherein the optical sensor is laterally movable relative to the proximal end of the catheter, the optical sensor includes at least one photodetector and at least one emitter that are aligned linearly relative to one another along the distal end of the catheter;
- and
- a controller in communication with the optical sensor, the controller is configured to determine a thickness of tissue detected adjacent to the distal end of the catheter based on light detected by the optical sensor.
1 more element
Dependencies are inferred from the claim text.