Photoacoustic and ultrasonic endoscopy system including a coaxially configured optical and electromagnetic rotary waveguide assembly and implementation method thereof

US11272831B2 · kind B2 · utility

Assignee

• UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) · KR

Inventors

• Joon Mo Yang · San Diego, US
• Chae Un Kim · Ulsan, KR

Key dates

• Filing date: Jul 10, 2017
• Grant date: Mar 15, 2022
• Expiry date: Nov 16, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2562/247
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A photoacoustic-ultrasonic dual-mode endoscope includes: a probe and a probe driving unit, wherein the probe includes: a coaxially configured optical and electromagnetic rotary waveguide assembly including an optical fiber, the optical fiber including a core and a cladding, and a conductive path coaxially arranged with the optical fiber; a scanning tip located at an end of the coaxially configured optical and electromagnetic rotary waveguide assembly and configured to deliver a laser beam to an object to be examined and detect a photoacoustic signal and an ultrasonic signal generated from the object to be examined; and a plastic catheter surrounding outer surfaces of the coaxially configured optical and electromagnetic rotary waveguide assembly and the scanning tip, wherein the conductive path includes: a first conductive path including a portion coaxially arranged with the optical fiber; and a second conductive path including a portion coaxially arranged with the optical fiber and insulated from the first conductive path.