Multimodal sensor fusion guided laser bone ablation device and method

By using a liquid-guided laser bone ablation device and method, which utilizes a liquid beam to guide the ablation laser and combines it with isotonic fluid cooling, low-tapered deep-hole ablation and real-time monitoring are achieved. This solves the problems of large taper and thermal damage in traditional laser ablation, and improves the safety and efficiency of ablation.

CN122350865APending Publication Date: 2026-07-10SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202610471002.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-10
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Traditional fixed Gaussian beams can easily result in large taper during ablation, making it difficult to cut deep tissues. Furthermore, when ablates deep biological tissues, the heat cannot be dissipated in time, leading to local overheating and carbonization, which damages surrounding tissues.

Method used

The liquid-guided laser bone ablation device employs multimodal sensor fusion. It guides the ablation laser through a liquid beam and combines it with isotonic fluid cooling to achieve real-time monitoring and adaptive parameter adjustment of the ablation process. It uses a swept-frequency laser and a balanced photodetector to detect phase changes, and combines acoustic sensors and an infrared thermal imager to identify tissue type and monitor temperature.

Benefits of technology

Low-tapered deep-hole ablation was achieved, reducing sidewall erosion and ensuring low damage during the ablation process. Closed-loop monitoring was achieved through multi-dimensional synchronous sensing, improving the safety and efficiency of ablation.

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Abstract

The application discloses a kind of liquid guide laser bone ablation devices and methods of multi-modal sensing fusion, the liquid guide laser bone ablation device includes: supply module, ablation module, detection module and main control module, supply module includes containing cavity and nozzle, nozzle is located at the bottom of containing cavity, the isotonic solution in containing cavity can be ejected by nozzle and be flushed with liquid beam flow to be ablated tissue.Ablation module includes pulsed laser, pulsed laser is used to emit ablation laser in liquid beam flow, and liquid beam flow guides ablation laser to remove to be ablated tissue.Detection module includes frequency-sweeping laser and balanced optical detector, frequency-sweeping laser is used to emit probe laser in liquid beam flow, and balanced optical detector is used to receive the surface scattering of to be ablated tissue probe laser, and is converted into electrical signal.Main control module is used to determine the phase change data generated by light-heat expansion of to be ablated tissue based on electrical signal, determines the ablation depth of to be ablated tissue and calculates temperature.Realize the deep hole ablation of low taper.
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