多功能智能止血带的设计与研究

发布时间：2018-04-08 15:22

本文选题：智能止血带　切入点：MSP430　出处：《华北电力大学》2015年硕士论文

【摘要】：随着医学科技的发展,人们对医学和临床止血带的精度和可靠性的要求越来越高,手术中止血带是否能够准确地根据患者的血压值实时的调整止血压力,对患者的人身安全来说是至关重要的。手术中患者的血压是不停变化着的,然而,大多数现有的气压止血带只能将止血压力维持在有限的范围内,不能根据患者的血压值实时的调控止血压力,即使小部分止血带能够根据患者的血压值实时的调控止血压力,但是价格昂贵,并且由于传统止血带是在手术前由充气设备对气压止血带进行充气,使之达到一定的气压,压迫动脉使血流隔断,从而达到止血的效果。因此研制操作简单方便、使用灵活、产生噪声小且又能在手术过程中根据血压动态的调整止血压力的智能止血带成为了本文的主要目的和出发点。本文针对传统止血带不能根据患者的血压值实时的调控止血压力的不足,提出了一种可以实时监测血压并能根据血压动态地调节的控制系统及实现方案。使用了一种可行的、精度较高的血压判定方法-基于示波法和高斯拟合的血压判定方法：首先在采集到的数据中找出峰值点,然后在这些峰值点的基础上用高斯拟合的方法拟合出震荡波的包络线,最后根据文中的公式找出收缩压和舒张压的位置,进而确定收缩压和舒张压,最后确定止血带的止血压力。最后,本文还对新提出的血压判定方法进行了适应性和重复性的验证。将最后的仿真结果和使用听诊法得到的结果进行了对比。
[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.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：R618

【参考文献】