Laser lithotripsy system and laser ranging method

By processing the interference spectrum through the optical coupler and spectrometer in the laser lithotripsy system, the problem of low accuracy in measuring the distance between the fiber optic end and the stone is solved, and high-precision laser lithotripsy operation is achieved.

CN122350867AActive Publication Date: 2026-07-10SUZHOU MENOVEX PHOTONICS TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202610832885.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-10
Publication Date
2026-07-10
Estimated Expiration
2046-06-10

AI Technical Summary

Technical Problem

In existing laser lithotripsy technology, the distance measurement accuracy between the fiber optic end and the stone is low and requires frequent calibration. Existing ranging methods are difficult to measure accurately and have complex structures.

Method used

The laser lithotripsy system includes a medical laser system, a ranging light source system, an optical coupler, and a spectrometer. The optical coupler causes the medical laser and the ranging light to interfere with the reflected light from the stone surface at the end face of the optical fiber, forming an interference spectrum. The spectrometer is used to process the total spectral array to calculate the distance between the end face of the optical fiber and the stone.

Benefits of technology

This improved the measurement accuracy between the fiber optic end and the stone, reduced the number of devices, lowered the structural complexity, and enabled high-precision laser lithotripsy.

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Abstract

The invention relates to the technical field of laser lithotripsy, in particular to a laser lithotripsy system and a laser ranging method, and solves the technical problems that in the prior art, the measurement precision of the distance between an optical fiber end face and calculus is low, and frequent calibration is needed. According to the laser lithotripsy system provided by the invention, through the optical coupler, the components included in the light path track of the distance measuring light and the light path track of the sample light are partially overlapped, the number of the components is reduced, two working channels do not need to be arranged, and the complexity of the structure is reduced. In addition, according to the laser ranging method, when the prediction result event is a normal event, whether the detection result data is valid is determined according to the detection result data, if yes, the initial distance is calculated according to the detection result data, the initial distance is added into a preset calculation queue, and the actually measured distance corresponding to the current frame is calculated through weighted average; and the calculation precision is improved.
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