Optical scanning probe for endoscopic OCT (optical coherence tomography) imaging

Abstract

The invention discloses an optical scanning probe for endoscopic OCT (optical coherence tomography) imaging. The optical scanning probe comprises a holding portion with a photoelectric interface, and the front end of the holding portion is connected with an MEMS (micro-electromechanical systems) optical scanning probe for endoscopic OCT imaging through a connecting portion. With the MEMS optical scanning probe, the endoscopic use of the OCT imaging technology is realized; an OCT optical image is capable of entering a narrow body cavity or a narrow pipeline in the industrial field; and various suspected diseased tissues or samples are capable of being accurately scanned to acquire optical coherence tomography images of the suspected diseased tissues or the samples for further diagnosis. The optical scanning probe is particularly applied to the biomedical field, biological tissue sampling and slicing is eliminated, and thus, patients' pain is greatly relieved, and detection time is reduced. The endoscopic probe utilizes the MEMS technology to miniaturize the optical scanning probe, and thus, the diameter of an endoscopic insertion portion is greatly reduced.

Description

Technical field [0001] The present invention relates to an optical image endoscopic scanning device, in particular to an optical scanning probe used for OCT endoscopic imaging. Background technique [0002] Optical coherence tomography (OCT) has high-resolution cross-sectional imaging capabilities. It has matured in the medical field and has been widely used in the diagnosis of in vitro diseases such as ophthalmology and skin. In order to realize OCT non-invasive detection of various internal organs or internal tissues in the human body, the key technical obstacle is the miniaturization of the OCT endoscopic scanning probe (the outer diameter is required to be less than 5 mm). [0003] Most of the core technologies of traditional rigid endoscopes use optical fiber bundles for light transmission and imaging, or use CCD technology for imaging. This type of endoscope can only observe from the surface of the tissue to provide doctors with diagnostic evidence, but often early cancer Sy...

AI Technical Summary

Problems solved by technology

[0003] Most of the core technologies of traditional rigid endoscopes use optical fiber bundles for light transmission and imaging, or CCD technology for imaging. This type of endoscope can only observe from the surface of the tissue to provide doctors with diagnostic evidence. However, early cancer often Symptoms occur at a depth of 1-3 mm below the skin, so the above-mentioned endoscopy is powerless

In addition, there are also endoscopes that perform medical imaging through the principle of ultrasound. This type of endoscope can obtain tissue information deeper than the surface of biological tissues, but the resolution is only on the order of millimeters, and cannot effectively detect and diagnose fine tissues.

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