Full-scan opto-acoustic double-mode endoscopic probe

Abstract

The invention discloses a full-scan opto-acoustic double-mode endoscopic probe. The endoscopic probe comprises an ultrasonic transducer, an incident optical fiber and a cone surface reflector; the axial outer side of the ultrasonic transducer is sleeved with a tube shell, and the ultrasonic transducer is rotatably arranged on the inner side wall of the tube shell; emergent light of the incident optical fiber penetrates through the ultrasonic transducer to irradiate the sphere center of a hemispherical inwards-concave surface; a reflection cone surface is arranged at the sphere center position of the hemispherical inwards-concave surface, and incident light of the incident optical fiber reflects on the reflection cone surface and then is vertically emitted to a to-be-tested portion from the side wall of an endoscope; an ultrasonic vibration element is arranged on the inwards-concave surface of the outer side of the center of the hemispherical inwards-concave surface and synchronously rotates with the cone surface reflector, and ultrasonic waves sent by the ultrasonic vibration source are reflected by the reflection cone surface and then obliquely emitted to the to-be-tested portion from the side wall of the endoscope. According to the endoscopic probe, the technical problem that the imaging contrast ratio and imaging depth of the endoscope cannot be obtained simultaneously is solved.

Description

technical field

[0001] The invention relates to the technical field of biomedical devices, and more specifically, the invention relates to a full-scan photoacoustic dual-mode endoscopic probe. Background technique

[0002] The currently commonly used optical endoscopes are mainly NDT instruments integrating light, machinery and electricity, which are divided into three series of products: the first category, rigid endoscope series; the second category, fiber endoscope series; the third category Three types, electronic video endoscope series. The working principle of the rigid endoscope series is to use the image transfer lens optical technology to transmit the image, and the optical fiber provides light transmission and illumination. The working principle of the fiber endoscope series is to transmit images through high-quality image-transmitting fibers, and observe them directly through the eyepiece. The electronic video endoscope series is to manufacture electronic video ...

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