Endoscopic imaging system
AssigneeCarnegie Mellon University and University of Pittsburgh
InventorsYingtian Pan, Gary K. Fedder, Huikai Xie
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Abstract
A system and method for an endoscopic optical coherence tomography (OCT) system based on a CMOS-MEMS mirror to facilitate lateral light scanning. The laser scanning scope, adapted to the instrument channel of a commercially-available endoscopic sheath, allows for the real-time cross-sectional imaging of living biological tissue via direct endoscopic visual guidance. A conventional rod lens imaging system may be used for the visual guidance. The MEMS mirror is preferably actuated using either or both of a thermal-mechanical or electrostatic actuation system. More than one MEMS micromirror may be used in a single system for 3D imaging.
Claims20
A laser scanning system, comprising:
- an endoscope tube;
- a broadband light source directed through said endoscope tube;
- a MEMS micromirror that imparts a scan angle on said directed broadband light;
- and
- a lens that focuses the broadband light onto a specimen.
A laser scanning system, comprising:
- a broadband light source;
- a fiber optic Michelson interferometer with a reference arm and a scanning arm attached to said broadband light source;
- and
- an imaging assembly in the scanning arm of the interferometer which comprises a MEMS micromirror to impart a scan angle on said broadband light source.
A laser scanning system, comprising:
- an 22Fr endoscope tube;
- an OCT system inside said endoscope tube including a MEMS micromirror that imparts a scan angle on broadband light directed through said tube to said micromirror and a lens that focuses the broadband light onto a specimen;
- and
- a fluoroscope inside said endoscope tube alongside said OCT system.
Dependencies are inferred from the claim text.