【摘要】：射頻消融儀是近幾十年內(nèi)出現(xiàn)的一種新型的治療腫瘤的儀器,特別是在治療內(nèi)臟腫瘤方面有突出的效果。射頻消融技術(shù)是一種物理型治療技術(shù),主要是根據(jù)細(xì)胞受熱死亡的原理來(lái)發(fā)揮治療作用。在經(jīng)過(guò)多年的研究和發(fā)展,以及在醫(yī)學(xué)臨床中的試驗(yàn),射頻消融技術(shù)已經(jīng)越來(lái)越成熟。臨床數(shù)據(jù)顯示,該技術(shù)具有創(chuàng)傷性小,安全性高,治療效果明顯的特點(diǎn),而且隨著技術(shù)的發(fā)展,射頻消融儀正向著小型化、智能化、低成本化的趨勢(shì)發(fā)展,越來(lái)越不受環(huán)境因素的影響,使用起來(lái)也更加方便,當(dāng)然最重要的是安全性也越來(lái)越高,因此受到了越來(lái)越多醫(yī)院的青睞,給千萬(wàn)患者帶來(lái)了福音。本文主要介紹了射頻消融儀中的監(jiān)測(cè)系統(tǒng)。它是射頻消融儀中一個(gè)重要的組成子系統(tǒng),實(shí)時(shí)監(jiān)測(cè)著消融儀內(nèi)部的電流、電壓以及溫度的變化。而電流,電壓和溫度正是消融儀發(fā)揮射頻治療作用的三個(gè)重要參數(shù)。本文設(shè)計(jì)的監(jiān)測(cè)系統(tǒng)能夠?qū)崟r(shí)監(jiān)測(cè)射頻消融儀內(nèi)部的電壓值、電流值和溫度值,還能計(jì)算實(shí)時(shí)功率的大小,最后通過(guò)PID控制器可以實(shí)現(xiàn)溫度控制下的工作模式和功率控制下的工作模式。相比于傳統(tǒng)的只有功率控制的射頻消融儀,具有更豐富的功能選擇,給使用者提供了更多的治療方案。本課題首先從監(jiān)測(cè)系統(tǒng)的功能需求分析和性能需求分析開(kāi)始,給出了監(jiān)測(cè)系統(tǒng)的總體設(shè)計(jì)方案,介紹了系統(tǒng)的總體框架和系統(tǒng)的電路組成情況,然后制作相對(duì)應(yīng)的PCB板形成實(shí)物,最后把監(jiān)測(cè)系統(tǒng)組裝到配套的射頻消融儀中進(jìn)行功能測(cè)試和調(diào)試驗(yàn)證,對(duì)測(cè)試結(jié)果進(jìn)行分析總結(jié),并根據(jù)存在的不足對(duì)下一步工作做出展望。經(jīng)過(guò)調(diào)試驗(yàn)證,本文中設(shè)計(jì)的監(jiān)測(cè)系統(tǒng)能夠讓射頻消融儀實(shí)現(xiàn)溫度控制下和功率控制下的雙模式可切換工作,豐富了消融儀的工作模式,提高了射頻消融的治療效果。監(jiān)測(cè)系統(tǒng)能夠正常監(jiān)測(cè)消融儀中的電壓值,電流值和溫度值,并計(jì)算相應(yīng)的功率大小并傳給上位機(jī)顯示出來(lái)。該系統(tǒng)具有高智能化,高精確度,高安全性的突出優(yōu)點(diǎn)。
[Abstract]:Radiofrequency ablation apparatus (RFCA) is a new type of tumor therapy instrument in recent decades, especially in the treatment of visceral tumors. Radiofrequency ablation (RFCA) is a physical therapy technique, which is mainly based on the principle of cell death by heat. After many years of research and development, as well as medical clinical trials, radiofrequency ablation technology has become more and more mature. Clinical data show that the technique has the characteristics of small trauma, high safety and obvious therapeutic effect. With the development of the technology, the radiofrequency ablation instrument is developing towards miniaturization, intelligence and low cost. It is more and more not affected by environmental factors and is more convenient to use. The most important thing is that the safety is getting higher and higher, so it has been favored by more and more hospitals and brought the gospel to millions of patients. This paper mainly introduces the monitoring system of RF ablation instrument. It is an important sub-system of RF ablation instrument, which monitors the change of current, voltage and temperature in real-time. Current, voltage and temperature are the three important parameters of radiofrequency therapy. The monitoring system designed in this paper can monitor the voltage value, current value and temperature value of RF ablation instrument in real time, and can also calculate the real-time power. Finally, the working mode of temperature control and power control can be realized by PID controller. Compared with the traditional RF ablation instrument with only power control, it has more function choices and provides more therapeutic options for users. This paper begins with the functional requirement analysis and performance requirement analysis of the monitoring system, presents the overall design scheme of the monitoring system, and introduces the overall framework of the system and the circuit composition of the system. Then the corresponding PCB board is made to form the object. Finally, the monitoring system is assembled into the matching RF ablation apparatus for functional testing and debugging verification. The test results are analyzed and summarized, and the future work is prospected according to the existing shortcomings. After debugging and validating, the monitoring system designed in this paper can make the dual mode switching work under temperature control and power control, enrich the working mode of the device and improve the therapeutic effect of radiofrequency ablation. The monitoring system can monitor the voltage value, current value and temperature value of the erasure instrument normally, and calculate the corresponding power value and transmit it to the upper computer. The system has the outstanding advantages of high intelligence, high precision and high security.
【學(xué)位授予單位】：杭州電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TH789;TP274

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本文編號(hào)：2448972