Passively driven rotary scanning optical probe

Abstract

Disclosed is a passively-driven rotary scanning optical probe. The probe includes an inner sleeve, optical fibers, an outer sleeve, a light focusing element, propellers, a rotating part, a reflectingelement and the like; the propellers are fixedly mounted on the rotating part, and the reflecting element is fixed to the center of a rotating shaft at one end of the rotating part where the propellers are inserted. The reflecting element, the propellers and the rotating part are mounted at the tail end of the inner sleeve. When liquid such as physiological saline is injected, the liquid flushes the propellers to rotate, and therefore the reflecting element mounted on the propeller rotating shaft is driven to rotate. Lasers emitted after focused by the light focusing element are transmitted onto a reflecting surface of the reflecting element and then reflected to a measured sample, and when the reflecting element rotates, lasers can be used for conducting 360-degree shadowless scanning onthe measured sample. By means of the passively-driven rotary scanning optical probe, optical signals can be transmitted stably, and the probe has the advantages of being high in safety and stability,free of scanning shadow areas, capable of being less influenced by non-uniform rotation distortion and achieving radial 360-degree scanning without being driven by external electric power and the like.

Description

technical field [0001] The invention relates to a medical imaging instrument, in particular to an optical probe which can be used for endoscopic imaging. Background technique [0002] Optical coherence tomography (Optical Coherence Tomography, OCT) is an advanced imaging technology using the principle of weak coherent optical interferometer, which is widely used in the medical field. This technology puts forward strict requirements on the optical probe when performing endoscopic biomedical testing. The size of the probe should be as small as possible, and it should be stable during the working process and capable of 360-degree scanning. At present, many scientific research institutions at home and abroad have conducted related research on OCT optical probes for endoscopic imaging. [0003] Prior art one (referring to the invention patent literature of Chinese Patent Publication No. CN104887172A) discloses a new type of non-radiation OCT probe and measurement system for bloo...

AI Technical Summary

Problems solved by technology

In clinical use, if the probe breaks, it will cause electric shock to the human body

Therefore, such active-driven probes that require external power supply have certain risks to human life safety in clinical use.

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