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US 11,033,190 B2Granted
Micro-molded anamorphic reflector lens for image guided therapeutic/diagnostic catheters
AssigneeAvinger, Inc.
InventorsHimanshu N. Patel, Manish Kankaria, Kin F. Chan
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Abstract
A catheter system for optical coherence tomography includes an elongate catheter body, an optical fiber in the elongate catheter body, and an anamorphic lens assembly coupled with a distal end of the optical fiber. The optical fiber and the lens assembly are together configured to provide a common path for optical radiation reflected from a target and from a reference interface between the distal end of the optical fiber and the lens assembly.
Claims20
A catheter for optical coherence tomography (OCT), comprising:
- an elongate catheter body;
- an optical fiber in the elongate catheter body;
- and
- a lens assembly, the lens assembly comprising:
- a lens body having an elongate channel therein, the elongate channel holding a distal end of the optical fiber and filled with an interface medium;
- a concave lens surface at a distal end of the lens body, wherein the concave lens surface is positioned opposite from and at an angle relative to the distal end of the optical fiber, wherein the concave lens surface has a compound radius having first radius along a first axis that is different from a second radius along a second axis;
- wherein the optical fiber and the lens assembly are together configured to provide a common path for optical radiation reflected from a target and from a reference interface formed by the interface medium.
4 more elements
A method of generating an optical coherence tomography (OCT) image, comprising:
- passing light from an optical fiber to a concave lens surface, wherein a distal end of the optical fiber is positioned within an elongate channel of a lens assembly, and wherein the concave lens surface is at a distal end of the lens assembly and has a compound radius having first radius along a first axis that is different from a second radius along a second axis;
- reflecting light from the concave lens surface into tissue;
- collecting light returning from the tissue and passing it back through the lens assembly and into the optical fiber;
- and
- generating an OCT image with the light returning from the tissue.
2 more elements
Dependencies are inferred from the claim text.