Breast duct endoscope imaging probe

Abstract

The invention provides a breast duct endoscope imaging probe. Pulse laser is coupled to enter one end of an excitation optical fiber and focused at the other end through a collimating convergence element, irradiates onto a reflecting element and then is reflected, then the pulse laser is focused under the inner surface of a living body through a capsule, and an ultrasonic signal is generated because of acousto-optical effects; the ultrasonic signal which is reflected back penetrates through the capsule and irradiates onto the reflecting element and then is reflected and focused onto an opticalresonance element, and the resonant frequency of the optical resonance element is changed; probe laser is coupled to enter one end of a receiving optical fiber, and coupled at the other end of the receiving optical fiber to enter the optical resonance element, and the probe laser for changing the resonant frequency is reflected back from the receiving optical fiber, and subjected to three-dimensional imaging through an optical detector and an imaging unit. According to the breast duct endoscope imaging probe, the device is higher in integrating degree and smaller, low-cost, small, optically transparent and high-bandwidth all-optical acoustic-optical signal collection is achieved, and an existing clinical breast duct endoscope technology is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of endoscopic imaging, and in particular relates to a breast duct endoscopic imaging probe. Background technique [0002] Pathological nipple discharge is one of the common manifestations of breast lesions. Common causes include intraductal papilloma, ductal ectasia, breast cancer, and plasma cell mastitis. Before the invention and application of ductoscopy technology, examination methods including ultrasound, magnetic resonance and mammography could not obtain more accurate diagnostic results. Ductoscopy is an endoscopic camera light source system, which can directly observe the manifestations of lesions in the milk ducts, and at the same time can perform biopsy of lesions, and can also perform drug lavage treatment. However, existing ductoscopes have the following deficiencies: first, the imaging depth of ductoscopes is limited. The depth of the mammary ductoscope is limited by the diameter, length and ...

AI Technical Summary

Problems solved by technology

But there are following deficiencies in existing ductoscope: the first, the imaging depth of ductoscope is limited

Studies have shown that intraductal papillomas often occur in epithelial cells and stroma of small ducts and terminal ducts, while small ducts and terminal ducts are often not dilated, leading to missed diagnosis

Second, what you see in ductoscopy is what you get. It is impossible to scan the lesion and its surrounding tissues in multiple slices. It is necessary to check the ducts at all levels step by step, and only two-dimensional images can be obtained. The diagnostic information provided to clinicians is limited.

At the same time, because of the low efficiency of examination and diagnosis, as an invasive examination, it causes greater pain to patients.

Third, the resolution of ductoscopy is limited, and the judgment of the elasticity and functional status of the lesion tissue is lacking

This solution has three disadvantages: First, although the cylindrical fiber sidewall can converge the excitation light along the vertical direction of the fiber axis, its excitation density is still low, so the required power consumption is relatively large

Second, the ultrasonic signal does not have a dedicated converging element, so the collection efficiency is low and the signal loss is large

Third, due to the low quality factor of the Fabry-Perot microcavity, the detection sensitivity of the acousto-optic signal is low, resulting in limited image resolution

The disadvantage of this solution is that the ultrasonic transducer is used, which is optically opaque, resulting in complex optical design, low integration, and the resolution and signal-to-noise ratio are limited by the volume of the piezoelectric material.

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