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US 7,742,805 B2Granted
Optical catheter with dual-stage beam redirector
AssigneeInfraReDx, Inc.
InventorsSimon Furnish, Andres F. Zuluaga
Life of this patent
Estimating the term…
Abstract
A catheter includes separate first and second optical channels extending between proximal and distal portion thereof. First and second beam redirectors in optical communication with the respective first and second optical channels each have on-axis stage and an off-axis stage.
Claims18
A catheter comprising:
- a first optical channel extending between a proximal and distal portion of the catheter;
- a second optical channel extending between the proximal and distal portions of the catheter, the second optical channel being separate from the first optical channel;
- a first beam redirector in optical communication with the first optical channel, the first beam redirector comprising a first stage and a second stage;
- and
- a second beam redirector in optical communication with the second optical channel, the second beam redirector comprising a third stage and a fourth stage,
- wherein the first stage is configured to receive a light beam from the first optical channel and to change a propagation direction of the light beam by refracting the light beam at a first non-zero angle with respect to an axis of the first optical channel;
- and
- wherein the second stage is configured to receive the refracted light beam and to change a propagation direction of the refracted light beam by redirecting the refracted light beam at a second non-zero angle with respect to the axis of the first optical channel, the second angle being greater than the first angle.
5 more elements
A multi-channel optical redirector comprising:
- a first beam redirector for placement in optical communication with a first optical channel, the first beam redirector comprising a first stage configured to receive a light beam from the first optical channel and to change a propagation direction of the light beam by refracting the light beam at a first angle with respect to an axis of the first optical channel, and a second stage configured to receive the refracted light beam and to change a propagation direction of the refracted light beam by redirecting the refracted light beam at a second angle with respect to the axis of the first optical channel that is greater than the first angle;
- and
- a second beam redirector for placement in optical communication with a second optical channel, the second beam redirector comprising a third stage configured to change a propagation direction of a light beam by redirecting the light beam at a third angle, and a fourth stage configured to change a propagation direction of a light beam by redirecting the light beam at a fourth angle that is greater than the third angle.
A system for identifying vulnerable plaque, the system comprising:
- a first optical channel extending between a proximal and distal portion of the catheter;
- a second optical channel extending between the proximal and distal portions of the catheter, the second optical channel being separate from the first optical channel;
- a first beam redirector in optical communication with the first optical channel, the first beam redirector comprising a first stage and a second stage;
- a second beam redirector in optical communication with the second optical channel, the second beam redirector comprising a third stage and a fourth stage;
- a light source for directing light into the first optical channel;
- a detector for detecting light from the second optical channel;
- wherein the first stage is configured to receive a light beam from the first optical channel and to change a propagation direction of the light beam by refracting the light beam at a first non-zero angle with respect to an axis of the first optical channel;
- and
- wherein the second stage is configured to receive the refracted light beam and to change a propagation direction of the refracted light beam by redirecting the refracted light beam at a second non-zero angle with respect to the axis of the first optical channel, the second angle being greater than the first angle.
6 more elements
Dependencies are inferred from the claim text.