针刺内关穴对心律失常病人脉象频域特性的影响

目的 研究针刺内关穴对心律失常病人脉象频域特性的影响.方法 以15例临床心律失常病人为研究对象,使用自主设计的针刺仪与脉象仪,检测针刺内关穴前后的脉象图以及针刺过程中针体受力数据,采用粗粒谱法对脉象数据进行频域分析,以所得功率谱中主频幅值P1与次主频幅值P2的比值作为特征参数,比较针刺前后此特征参数的变化.结果 针刺前后脉象功率谱的特征参数发生显著性改变(P＜0.05).结论 针刺内关穴使心血管系统获得优化方向的调节,从而有利于心率失常患者的心功能康复.     

一种描述针刺对脉象影响的方法

针刺与脉象在传统中医观念中是紧紧联系在一起的.本课题针对这一传统理论,建立一个基于频域上的模拟函数得出的脉象频谱数学模型,并用此模型来检验针刺前后脉象发生的结构上的变化.由量化的脉象信号得出的大量统计数据显示,脉象在频域上的包络线呈指数衰减的趋势,并且针刺后其拟合率更高.由统计结果得出,脉象在频域上的衰减率明显增大.同时,从数学上说明了其衰减率的增大等价于脉象在时域上的降中峡、重搏波,及低频涨落程度的变化,也对时域上的脉象作了新的数学模型的模拟.本项研究证实了针刺对脉象具有调整作用.     

中医脉象仪研究进展

脉象检测方法研究一直是中医学的前沿课题。为实现脉诊的客观化,就必须客观再现脉搏搏动,其相关研究领域主要包括脉象仪研制、临床研究、参数分析等方面,其中脉象仪器设计与研制尤为重要。本文不仅概述了国内外脉象仪的研究进展,也阐述了脉象仪中相应传感器的分类及其应用状况。尽管国外脉象仪研究侧重略有不同,但所有改进均从满足研究与临床需求的角度出发以提高其社会应用价值。     

中医脉象发生仪的研制

目的利用工程学方法形象客观地模拟人体各种脉象。方法构建了一个符合人体构造的运动的流体模型，在此基础上开发了一套针对中医诊断教学的模拟系统——中医脉象发生仪。该系统将中医学与仿生学、机械学、传感技术及计算机技术等工程学方法结合起来。结果它成功模拟了人体常见的26种脉象，体现了各种脉象的指下特征，适用于课堂教学、教学测试和科学研究等方面。结论借助于这种模型，研究人员可以深入进行血液流变学、脉诊学、脉象特征提取等方面的研究。     

一种具有传统中医针刺补泻手法的新型智能电针仪设计

针对目前电针产品无仿传统针刺补泻法的电针针法和人体刺激耐受性的问题,本文提出了一种基于PIC单片机实现的新型智能电针仪.该电针仪由单片机、信号发生电路、功率驱动、液晶显示、按键输入、安全保护和声音提示等部分组成.着重介绍了利用单片机实现仿传统中医针刺补泻手法,并采用模糊划分与混沌处理结合的方法,解决人体刺激的适应性.仪器具有多种针法选择、输出定时、自动报警等优点且设计符合医疗器械安全规范,可用于临床穴位针法刺激和经皮穴位神经电刺激.     

模拟针灸医师手法的电动针刺仪

北京医疗器械研究所根据中医针灸的临床需要,与北京中医院针灸科协作,研制成功电动针刺仪,经临床使用,效果满意。电动针刺仪主要由治疗头、控制盒、支架组成。控制盒中有整流滤波器、稳F器、针刺信号发生器、开门信号发生器,电子门、功率放大器、电子开关等部件。     

半导体激光针灸模拟仪的研制

为解决传统针灸空气污染、引起疼痛、有传染风险且操作要求高等问题及目前市场上激光针灸仪仅单一连续的照射穴位且易于被人体适应的问题,将对传统艾灸手法和传统针刺提插手法及其补泻手法的定量分析结果对应于不同激光物理学参量并进行模拟,并由此设计了一种基于单片机平台可模拟多种针灸手法的双路输出半导体激光针灸模拟仪,其输出功率、时间均可设定.     

基于小波变换的脉搏波信号去噪

人体脉象信号是一种信噪比较低的非平稳随机信号,在分析脉象信号之前去噪是一项十分重要的工作。针对小波变换中的阈值法进行公式上的改进,并利用ZM—ⅢC型智能化中医脉象仪采集到的亚健康人群左关外桡动脉脉搏信号进行去噪处理,实验结果表明,改进后的阈值法可以取得更好的去噪效果。     

双波长多通道激光针灸仪的设计与实现

目的 利用弱激光的生物刺激效应,针对中医针灸穴位配伍的临床应用特点,在中医针灸理论指导下设计一种双波长多通道激光针灸仪.方法 采用单片机与半导体激光器设计硬件电路,以实现仪器的基本功能,并设计相应的上位机软件.结果 所设计的激光针灸仪可对多个穴位同时进行相同或不同激光参数(波长、功率密度、连续/脉冲)的激光针灸治疗,每个通道均可输出635、808 nm两种波长的激光,且激光功率连续可调.结论 双波长多通道激光针灸仪实现了对针刺疗法中提、插等手法以及艾灸疗法中小炷、中炷、大炷等灸法的模拟,可满足针灸临床治疗中对穴位配伍、量化治疗参数及电子病历管理等多方面需求,操作简单,使用方便,具有良好的临床应用价值.     

白内障超声乳化仪中手柄频率跟踪方法的研究

目的 通过对谐振网络幅频特性的分析,提出一种白内障超声乳化仪中跟踪手柄谐振频率的新方法.方法 谐振网络等效负载阻抗两端电压随激励信号的频率而变化,当激励信号的频率等于超声手柄的谐振频率时,电压取得最小值.利用谐振网络这一幅频特性,在扫频过程中,通过寻找其电压最小值来确定超声手柄的谐振频率.在超声乳化仪工作时,实时检测谐...     

Acupuncture and insomnia

40 patients with primary difficulties in either falling asleep or remaining asleep were diagnosed according to the traditional Chinese medicine, allocated to specific diagnostic subgroups and treated individually by a practitioner in his private practice. The patients were randomized into two groups, one receiving true acupuncture, the other needled at non-acupuncture points for 3-5 sessions at weekly intervals. The outcome of the therapy was assessed in several ways, first and foremost by an objective measurement of the sleep quality by polysomnography in a specialized sleep laboratory, performed once before and once after termination of the series of treatments. Additional qualitative results were obtained from several questionnaires. The objective measurement showed a statistically significant effect only in the patients who received the true acupuncture. The subjective, qualitative assessment was better in the proper treatment group than in the control group but was not calculated statistically for methodological reasons. Based on the results of this study, it can be concluded that true and individualized acupuncture indeed shows efficacy in primary sleep disorders. However, a direct influence by the therapist cannot be excluded.     

Acupuncture and endorphins

Acupuncture and electroacupuncture (EA) as complementary and alternative medicine have been accepted worldwide mainly for the treatment of acute and chronic pain. Studies on the mechanisms of action have revealed that endogenous opioid peptides in the central nervous system play an essential role in mediating the analgesic effect of EA. Further studies have shown that different kinds of neuropeptides are released by EA with different frequencies. For example, EA of 2 Hz accelerates the release of enkephalin, beta-endorphin and endomorphin, while that of 100 Hz selectively increases the release of dynorphin. A combination of the two frequencies produces a simultaneous release of all four opioid peptides, resulting in a maximal therapeutic effect. This finding has been verified in clinical studies in patients with various kinds of chronic pain including low back pain and diabetic neuropathic pain.     

Acupuncture and Bronchial Asthma

Seventeen patients with stable bronchial asthma were randomly assigned to receive either correct acupuncture or placebo acupuncture. The study lasted 11 weeks and consisted of a pre-therapy, therapy, and post-therapy period. The patients received 10 treatments during a 5-week period. The effect of therapy on pulmonary function was assessed daily by the patients at home. Morning and evening peak expiratory flow rate, number of puffs beta 2-agonist aerosol needed, as well as subjective symptoms of asthma were recorded in a diary. The correctly treated group improved significantly throughout the study. Also, compared with the placebo group, a significant improvement was found in all assessed parameters 2 weeks after beginning therapy. Hereafter, no differences could be shown.