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基于STM32的椎弓根阻抗测量设备设计
集成电路应用
于浩文1,耿芳2,李强1
1.上海理工大学机械工程学院;2.美敦力[上海]有限公司
摘要: 为减小进行椎弓根置钉手术时穿破椎壁破坏神经组织的风险,该文提出了一种基于低功耗STM32微控制器、低功耗生物阻抗芯片模拟前端及定制电极针的椎弓根阻抗测量设备。凭借低功耗STM32与生物阻抗芯片的高分辨率、低噪声优势,设备实现小型化集成与低功耗运行,满足手术时的长期稳定检测需求。该设计采用不同频率测量组织阻抗,探究频率对设备阻抗测量的影响,提升了测量数据可靠性。
中图分类号:TP368.1;TH781文献标识码:ADOI:10.19339/j.issn.1674-2583.2026.08.009
中文引用格式:于浩文,耿芳,李强. 基于STM32的椎弓根阻抗测量设备设计[J].集成电路应用,2026,43(8):46-51.
英文引用格式:Yu Haowen,Geng Fang,Li Qiang. Design of pedicle impedance measurement device based on STM32[J].Application of IC,2026,43(8):46-51.
Design of pedicle impedance measurement device based on STM32
Yu Haowen1,Geng Fang2,Li Qiang1
1.School of Mechanical Engineering, University of Shanghai for Science and Technology; 2.Medtronic [Shanghai] Co., Ltd.
Abstract: This paper presents a pedicle impedance measurement system based on a low-power STM32 microcontroller, a low-power bio-impedance analog front-end chip, and a custom electrode needle, aiming at mitigating the risk of nerve injury caused by vertebral wall perforation during pedicle screw placement surgery. Leveraging the advantages of the low-power STM32 and the high-resolution, low-noise characteristics of the bio-impedance chip, the device achieves compact integration and low-power operation, ensuring long-term stable detection during surgery. Tissue impedance is measured at different frequencies to investigate the effect of excitation frequency on the device’s impedance measurements, thereby improving data reliability.
Key words : pedicle;STM32;circuit design;bio-impedance

引言

本文采用低功耗STM32与低功耗生物阻抗测量芯片搭建一套椎弓根阻抗测量系统,实现了通过阻抗数值对不同组织进行区分。系统设计了声光报警电路,在后续明确组织的阻抗值后,设置报警阈值以区分不同组织,以减小术中穿破椎弓根的风险。完成设备的硬件与软件的开发调试后,利用生物阻抗测量芯片产生不同激励频率,并探究频率对生物组织阻抗的影响。


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作者信息:

于浩文1,耿芳2,李强1

(1.上海理工大学机械工程学院,上海200093;

2.美敦力[上海]有限公司,上海201100)

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