本文選題：低溫等離子體　切入點(diǎn)：開(kāi)關(guān)電源　出處：《杭州電子科技大學(xué)》2017年碩士論文

【摘要】：低溫等離子手術(shù)設(shè)備通過(guò)高頻交流電壓電離生理鹽水來(lái)產(chǎn)生等離子體。而等離子體的強(qiáng)活性和高頻電流的熱效應(yīng)面對(duì)生物組織時(shí),能夠達(dá)到消融、切割、凝血等多種手術(shù)功能。低溫等離子手術(shù)具有操作方法簡(jiǎn)便、操作溫度低、手術(shù)創(chuàng)傷小、術(shù)后恢復(fù)快、治愈率高等諸多優(yōu)點(diǎn),在微創(chuàng)手術(shù)中有著突出的表現(xiàn)。在最近的十幾年里,隨著醫(yī)療水平的快速發(fā)展,微創(chuàng)手術(shù)在各個(gè)科室得到了越來(lái)越廣泛的應(yīng)用,對(duì)低溫等離子手術(shù)設(shè)備的需求也在不斷增長(zhǎng)。但目前的消融設(shè)備體積大、功能少,給醫(yī)生帶來(lái)諸多不便。本文致力于研發(fā)一臺(tái)小型化的多功能低溫等離子手術(shù)設(shè)備。低溫等離子手術(shù)設(shè)備輸出不同頻率、不同幅度的交流電壓會(huì)產(chǎn)生不同狀態(tài)的等離子體,針對(duì)不同部位的人體組織能達(dá)到不同手術(shù)效果。通常會(huì)通過(guò)調(diào)節(jié)交流信號(hào)的電壓幅度來(lái)完成對(duì)不同細(xì)胞組織的手術(shù),利用不同頻率的交流信號(hào)來(lái)達(dá)到不同的手術(shù)效果。此外,連續(xù)與斷續(xù)的高頻交流電壓也能實(shí)現(xiàn)不同的手術(shù)效果。基于這一生物理論,采用開(kāi)關(guān)電源技術(shù)設(shè)計(jì)一臺(tái)集成多個(gè)工作頻段、多種輸出波形、輸出電壓可調(diào)的高頻方波逆變器。高頻逆變器的設(shè)計(jì)往往會(huì)涉及到變壓器,受變壓器特性限制,不同逆變頻率需要匹配不同的繞組匝數(shù)。多個(gè)交流頻率輸出的逆變器通常會(huì)采用多個(gè)逆變回路來(lái)實(shí)現(xiàn),但這會(huì)導(dǎo)致設(shè)備的體積變大和成本增加。本文利用變壓器匝數(shù)與伏秒積的線性正比關(guān)系,根據(jù)輸出頻率的設(shè)置及實(shí)時(shí)輸出電壓來(lái)調(diào)節(jié)逆變驅(qū)動(dòng)信號(hào)占空比,用同一回路完成不同頻率的逆變。采用可編程邏輯器件CPLD代替?zhèn)鹘y(tǒng)的模擬集成芯片來(lái)產(chǎn)生逆變驅(qū)動(dòng)信號(hào),使控制更加靈活、可靠。由此,可在不增加設(shè)備體積的基礎(chǔ)上可提供多種輸出波形用于手術(shù)。本文以等離子體及高頻電流對(duì)生物組織的消融效應(yīng)為根本原理,以開(kāi)關(guān)電源為技術(shù)核心,開(kāi)發(fā)了一臺(tái)多波形輸出的低溫等離子手術(shù)系統(tǒng),并獲得以下成果:(1)輸出斷續(xù)或連續(xù)的100KHz或310KHz的方波信號(hào),配合不同手術(shù)刀頭實(shí)現(xiàn)多種手術(shù)功能。(2)輸出電壓在8V~148V內(nèi)可調(diào),以適應(yīng)不同部位的生物組織。(3)具有短路保護(hù),確保手術(shù)過(guò)程中安全性。(4)提高了系統(tǒng)功率,實(shí)現(xiàn)系統(tǒng)的穩(wěn)定性。
[Abstract]:Low-temperature plasma surgery equipment ionization of saline by high-frequency AC voltage to produce plasma.The strong activity of plasma and the heat effect of high frequency current can achieve many kinds of surgical functions, such as ablation, cutting, coagulation and so on.Low temperature plasma surgery has many advantages, such as simple operation method, low operating temperature, small surgical trauma, quick postoperative recovery, high cure rate and so on, so it has outstanding performance in minimally invasive surgery.In the last decade, with the rapid development of medical treatment, minimally invasive surgery has been more and more widely used in various departments, and the demand for hypothermia plasma surgery equipment is also increasing.However, the current ablation equipment is large in size and less in function, which brings a lot of inconvenience to doctors.This paper is committed to the development of a miniaturized multi-functional low-temperature plasma surgery equipment.The low temperature plasma surgery equipment outputs different frequency, the different amplitude AC voltage will produce the different state plasma, according to the different position human body tissue can achieve the different surgical effect.The operation of different cell tissues is usually accomplished by adjusting the voltage amplitude of AC signals, and different surgical effects are achieved by using different frequency AC signals.In addition, continuous and intermittent high-frequency AC voltage can also achieve different surgical results.Based on this biological theory, a high frequency square wave inverter with multiple working frequency bands, multiple output waveforms and adjustable output voltage is designed by using switching power supply technology.The design of high frequency inverter often involves transformer. Due to the limitation of transformer characteristic, different inverter frequency needs to match different winding turns.Inverters with multiple AC frequency outputs are usually implemented with multiple inverter circuits, but this will result in larger volume and higher cost of the equipment.In this paper, the linear proportional relation between transformer turns and volt second product is used to adjust the duty cycle of inverter driving signal according to the setting of output frequency and the real time output voltage, and the inverter with different frequency is completed by the same loop.The programmable logic device (CPLD) is used instead of the traditional analog integrated chip to generate the inverter driving signal, which makes the control more flexible and reliable.Thus, a variety of output waveforms can be provided for surgery without increasing the volume of the equipment.Based on the ablation effect of plasma and high frequency current on biological tissue, a low temperature plasma surgery system with multi-waveform output is developed in this paper, which is based on switching power supply.The following results are obtained: 1) output intermittent or continuous square wave signals of 100KHz or 310KHz, combined with different scalpel heads to achieve multiple surgical functions. The output voltage can be adjusted within the 8V~148V to adapt to the short circuit protection of different parts of biological tissue.Ensure the safety during the operation. 4) improve the power of the system and realize the stability of the system.
【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
【分類號(hào)】：R61;R319

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 來(lái)鵬飛;陳峰;曹發(fā)兵;李良;;Buck型DC-DC電路振鈴現(xiàn)象的抑制[J];電子與封裝;2016年02期

2 李書杰;黃元峰;吳浩;;開(kāi)關(guān)電源PCB接地設(shè)計(jì)[J];科技風(fēng);2014年22期

3 姬弘揚(yáng);;一種基于光耦HCPL0601的光電隔離型功率MOSFET驅(qū)動(dòng)電路[J];數(shù)字技術(shù)與應(yīng)用;2014年10期

4 金愛(ài)娟;陳健霖;李少龍;;一種新型軟開(kāi)關(guān)BUCK變換器[J];信息技術(shù);2014年06期

5 胡時(shí)高;虎恩典;丁曉軍;劉勇;;基于DSP控制的數(shù)字開(kāi)關(guān)電源設(shè)計(jì)[J];制造業(yè)自動(dòng)化;2014年11期

6 王會(huì)咪;劉強(qiáng);葉繼榮;;基于CPLD/FPGA多功能電源控制器研究與設(shè)計(jì)[J];電源技術(shù);2013年09期

7 房麗婷;須曉強(qiáng);;開(kāi)關(guān)電源PCB板的EMI抑制與抗干擾設(shè)計(jì)[J];電源技術(shù)應(yīng)用;2013年08期

8 焦尚彬;吳華朕;張青;宋丹;;基于FPGA的二維模糊PID開(kāi)關(guān)電源控制器研究[J];電力電子技術(shù);2013年04期

9 金健;;開(kāi)關(guān)電源端口浪涌抗擾度抑制措施[J];安全與電磁兼容;2011年05期

10 王居德;趙恒飛;劉穎力;張懷武;;鐵硅鋁磁芯升壓電感的設(shè)計(jì)[J];磁性材料及器件;2011年04期

相關(guān)碩士學(xué)位論文 前6條

1 楊曉靜;高頻開(kāi)關(guān)電源的研究與設(shè)計(jì)[D];武漢理工大學(xué);2011年

2 于航;針等離子體在醫(yī)學(xué)方面的應(yīng)用研究[D];長(zhǎng)春理工大學(xué);2010年

3 任學(xué)峰;一種電流模式控制PWM開(kāi)關(guān)電源的設(shè)計(jì)[D];西安電子科技大學(xué);2008年

4 湯璐;開(kāi)關(guān)電源的電磁兼容性研究[D];天津理工大學(xué);2007年

5 童躍光;開(kāi)關(guān)電源傳導(dǎo)干擾仿真分析[D];山東大學(xué);2007年

6 李強(qiáng);PWM調(diào)制開(kāi)關(guān)電源的研究[D];電子科技大學(xué);2005年

，

本文編號(hào)：1727245