2012 Pan American Health Care Exchanges最新文献

Microwave ablation coaxial antenna computational model slot antenna comparison 微波烧蚀同轴天线计算模型槽型天线比较

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233440

R. Ortega-Palacios, Arturo Vera, L. Leija

引用次数: 6

Low cost knee bionic prosthesis based on polycentric mechanisms 基于多中心机构的低成本仿生膝关节假体

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233447

A. Altamirano, L. Leija, A. Vera, R. Muñoz, A. Valentino

{"title":"Low cost knee bionic prosthesis based on polycentric mechanisms","authors":"A. Altamirano, L. Leija, A. Vera, R. Muñoz, A. Valentino","doi":"10.1109/PAHCE.2012.6233447","DOIUrl":"https://doi.org/10.1109/PAHCE.2012.6233447","url":null,"abstract":"Introduction. This work, explains the process carried out to make a design of mechanism of knee of polycentric type of 4 bars with mechanical actuator for modular prosthesis. The goal, emulate behavior and functioning of the knee for flexion and extension covering the basic needs of people with trans-femoral amputation of external prostheses modular with a low cost of production. Materials and methods. The development of polycentric knee mechanism was conducted in 2 phases. The first was in the design and construction of the mechanism of 4 bars; It was constructed of 6063 aluminum, bronze and stainless steel, corrosion resistant, of machining relatively simple and whose total mass is 690 g; We used software design SolidWorks® and COMSOL Multiphysics® for analysis of efforts, also machines and tools for machining such as conventional lathe and the milling machine. In the second phase re-engineering was applied to the mechanism of 4 bars and built a device with better ergonomics; added a mechanical actuator based on a spring; tested in three patients: one nursing home, one of 16 years, both female and a third with medical history of diabetes, hypertension and heart problems; the two previous phases are described in this document. Results and discussion. At the end of the development of this design we obtain a mechanism for external type polycentric knee, according to the phases of movement, speed, ergonomics, shapes, sizes and weights significant of Mexican patients. Tested for stress analysis using finite element and concluded that the device met with the feature to modify its center of rotation depending on the angle of flexion of the knee and can be considered a polycentric mechanism.","PeriodicalId":255935,"journal":{"name":"2012 Pan American Health Care Exchanges","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127647215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Study of the noise-ventricular late potentials sensibility on the wigner distribution time-frequency plane 噪声-心室晚电位在维格纳分布时频平面上的敏感性研究

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233455

M. Reyna-Carranza, M. Bravo-Zanoguera, H. Arriola, R. López

引用次数: 2

Appropriation of biomedical instruments within the electrophysiologistcardiologist framework 在电生理学和心脏病学框架内使用生物医学仪器

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233457

R. P. Figuerola, L. M. Santos, E. Suaste

引用次数: 0

Dual-mode antenna design microwave imaging and microwave heating: Experimental simulation of detection and treatment of tumor with hyperthermia 双模天线设计微波成像与微波加热:热疗检测与治疗肿瘤的实验模拟

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233451

G. Ramirez-Castillo, A. Vera, L. Leija

引用次数: 1

Humidity Sensor for biological applications via electrospinning 静电纺丝生物湿度传感器

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233449

G. A. Zamora-Perez, C. O. González-Morán, E. Suaste-Gómez

引用次数: 1

Numerical model of vertebral unit for the nucleus pulposus prosthesis analysis 髓核假体椎体单元的数值模型分析

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233423

C. Muller-Karger, N. Santoni, M. Matos, L. Zambrano

引用次数: 0

Possible application of spectral analysis techniques on ultrasonic echo-traces improved for studying changes in blood vessel walls 改进了超声回波迹谱分析技术在血管壁变化研究中的应用

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233453

I. Bazán, C. Negreira, A. Ramos, H. Calás, T. Gómez, A. Ramírez, J. M. De La Rosa, F. Gallegos

{"title":"Possible application of spectral analysis techniques on ultrasonic echo-traces improved for studying changes in blood vessel walls","authors":"I. Bazán, C. Negreira, A. Ramos, H. Calás, T. Gómez, A. Ramírez, J. M. De La Rosa, F. Gallegos","doi":"10.1109/PAHCE.2012.6233453","DOIUrl":"https://doi.org/10.1109/PAHCE.2012.6233453","url":null,"abstract":"Parametric algorithms previously developed by authors for spectral evaluation of biological multi-echo waveforms are adapted and improved here in order to achieve a more elevated frequency resolution. These results permit to undertake viability studies around the possible application of a new auto-regressive spectral technique to estimate physical properties like wall thickness changes in blood vessels, with accuracy enough. These difficult and sophisticated measurements in vessels have an increasing interest as tools to estimate basic parameters for calculating elastic properties in the vessel walls. Laboratory thickness data obtained for a latex phantom (mimicking vessel properties) are shown, giving a promising expectative for this improved estimation technique in blood vessels characterization, a diagnostic tool nowadays of growing attention by the researches. In fact, the results suggest clear improvement in spatial resolution, over the classic cross-correlation and non-parametric techniques, to estimate delays between pulsed signals. But, still further efforts and rigorous analyses of ultrasonic echo-signals acquired from well-controlled sanguineous tissues phantoms are needed in order to optimize the potential resolution of this new thickness measurement procedure and also to evaluate its possible clinic limitations.","PeriodicalId":255935,"journal":{"name":"2012 Pan American Health Care Exchanges","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129239682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Morphological analysis for feature extraction and classification of breast calcifications 形态学分析用于乳腺钙化的特征提取和分类

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233438

F. Elpidio, L. Brasil, J. Lamas, C. Miosso, L. A. Lemos

引用次数: 2

Dealing with uncertainties in the monitoring of patients through sensors networks 通过传感器网络处理患者监测中的不确定性

2012 Pan American Health Care Exchanges Pub Date : 2012-03-26 DOI: 10.1109/PAHCE.2012.6233439

K. Neles, W. Malvezzi, G. Bressan

引用次数: 2