本文選題：智能止血帶　切入點(diǎn)：MSP430　出處：《華北電力大學(xué)》2015年碩士論文

【摘要】：隨著醫(yī)學(xué)科技的發(fā)展,人們對醫(yī)學(xué)和臨床止血帶的精度和可靠性的要求越來越高,手術(shù)中止血帶是否能夠準(zhǔn)確地根據(jù)患者的血壓值實(shí)時(shí)的調(diào)整止血壓力,對患者的人身安全來說是至關(guān)重要的。手術(shù)中患者的血壓是不停變化著的,然而,大多數(shù)現(xiàn)有的氣壓止血帶只能將止血壓力維持在有限的范圍內(nèi),不能根據(jù)患者的血壓值實(shí)時(shí)的調(diào)控止血壓力,即使小部分止血帶能夠根據(jù)患者的血壓值實(shí)時(shí)的調(diào)控止血壓力,但是價(jià)格昂貴,并且由于傳統(tǒng)止血帶是在手術(shù)前由充氣設(shè)備對氣壓止血帶進(jìn)行充氣,使之達(dá)到一定的氣壓,壓迫動(dòng)脈使血流隔斷,從而達(dá)到止血的效果。因此研制操作簡單方便、使用靈活、產(chǎn)生噪聲小且又能在手術(shù)過程中根據(jù)血壓動(dòng)態(tài)的調(diào)整止血壓力的智能止血帶成為了本文的主要目的和出發(fā)點(diǎn)。本文針對傳統(tǒng)止血帶不能根據(jù)患者的血壓值實(shí)時(shí)的調(diào)控止血壓力的不足,提出了一種可以實(shí)時(shí)監(jiān)測血壓并能根據(jù)血壓動(dòng)態(tài)地調(diào)節(jié)的控制系統(tǒng)及實(shí)現(xiàn)方案。使用了一種可行的、精度較高的血壓判定方法-基于示波法和高斯擬合的血壓判定方法：首先在采集到的數(shù)據(jù)中找出峰值點(diǎn),然后在這些峰值點(diǎn)的基礎(chǔ)上用高斯擬合的方法擬合出震蕩波的包絡(luò)線,最后根據(jù)文中的公式找出收縮壓和舒張壓的位置,進(jìn)而確定收縮壓和舒張壓,最后確定止血帶的止血壓力。最后,本文還對新提出的血壓判定方法進(jìn)行了適應(yīng)性和重復(fù)性的驗(yàn)證。將最后的仿真結(jié)果和使用聽診法得到的結(jié)果進(jìn)行了對比。
[Abstract]:With the development of medical science and technology, people demand more and more accuracy and reliability of medical and clinical tourniquet. Can the tourniquet accurately adjust hemostatic pressure according to the patient's blood pressure value during operation?It is vital to the safety of the patient.The patient's blood pressure is constantly changing during the operation. However, most of the existing pneumatic tourniquet can only keep the hemostatic pressure within a limited range, and can't regulate the hemostatic pressure in real time according to the patient's blood pressure.Even though a small part of the tourniquet can regulate the hemostatic pressure in real time according to the patient's blood pressure, it is expensive, and because the traditional tourniquet is inflated by an inflatable device before the operation, the tourniquet is inflated to a certain pressure.The compression of the artery separates the blood flow, thus achieving the effect of hemostasis.Therefore, the main purpose and starting point of this paper is to develop an intelligent tourniquet with simple operation, flexible use, low noise and the ability to adjust the hemostatic pressure dynamically according to the blood pressure during the operation.Aiming at the deficiency that the traditional tourniquet can not adjust the hemostatic pressure in real time according to the patient's blood pressure value, this paper presents a control system which can monitor the blood pressure in real time and adjust dynamically according to the blood pressure.In this paper, a feasible and accurate blood pressure determination method, which is based on oscillographic method and Gao Si fitting method, is used. Firstly, the peak point is found in the collected data.Then, on the basis of these peaks, the envelope of the shock wave is fitted by Gao Si's fitting method. Finally, the position of systolic and diastolic pressure is found out according to the formula in this paper, and then the systolic and diastolic pressures are determined.Finally determine the hemostatic pressure of tourniquet.Finally, the new blood pressure determination method is proved to be adaptive and reproducible.The simulation results are compared with those obtained by auscultation.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：R618

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本文編號：1722192