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US 12,303,243 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.
Claims19
A medical device, comprising:
- a shaft;
- and
- an assembly coupled to a distal end of the shaft, the assembly including:
- a cuff having a distal end and a proximal end, the proximal end being configured to slidably attach over the distal end of the shaft to couple the assembly to the shaft;
- a plurality of arms circumferentially spaced apart from one another about the distal end of the shaft;
- and
- a sensor coupled to each of the plurality of arms;
- wherein the plurality of arms are configured to move relative to the distal end of the shaft between a first position and a second position;
- and
- wherein, in the first position, the plurality of arms are in an undeployed configuration such that each of the plurality of arms lies substantially flush relative to the distal end of the shaft, and in the second position, the plurality of arms are released to a deployed configuration such that each of the plurality of arms extends radially outwards relative to the distal end of the shaft.
7 more elements
A medical device, comprising:
- a shaft having a distal end for deployment within a bodily lumen;
- and
- an assembly coupled to the distal end and including two or more arms each having a sensor, the two or more arms being configured to move relative to the distal end between a first position and a second position;
- wherein, the two or more arms are positioned substantially flush with the distal end in an undeployed configuration when in the first position, such that the sensor on each of the two or more arms is inoperable for emitting light and detecting light intensity;
- wherein, the two or more arms are positioned distally relative to the distal end in a deployed configuration when in the second position, such that the sensor on each of the two or more arms is operable to emit light and detect a light intensity from within the bodily lumen;
- and
- wherein the two or more arms move from the undeployed configuration in the first position to the deployed configuration in the second position in response to the shaft moving distally relative to the bodily lumen, and from the deployed configuration in the second position to the undeployed configuration in the first position in response to the shaft moving proximally relative to the bodily lumen.
4 more elements
A medical device, comprising:
- a shaft;
- an assembly coupled to a distal end of the shaft, the assembly including (1) a plurality of arms that are flexibly movable relative to the distal end and (2) a sensor on each of the plurality of arms;
- and
- a controller communicatively coupled to the sensor on each of the plurality of arms;
- wherein, in a first position, the assembly is undeployed with the plurality of arms positioned laterally inwards towards the distal end such that the sensor on each of the plurality of arms faces inwards towards the distal end;
- wherein, in a second position, the assembly is deployed with the plurality of arms positioned laterally outwards from the distal end such that the sensor on each of the plurality of arms faces outwards away from the distal end;
- and
- wherein the controller is configured to calculate a separate perfusion index corresponding to a light intensity measured by a detector of each sensor in response to light emitted by an emitter of the same sensor when the assembly is in the second position.
5 more elements
Dependencies are inferred from the claim text.