中国医疗器械杂志最新文献_第10页

[FMECA and Failure Data Analysis of Domestic Wheeled Walking-Aid]. [家用轮式助行器的 FMECA 和故障数据分析]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230397

Chen Zheng, Xuanhan Lyu, Qijie Zhou, Jiawei Zhu, Yaqiu Li, Xuehe Yang

引用次数: 0

[Exploration of Application of Essential Principles of Safety and Performance of Medical Devices and IVD Medical Devices: Take Artificial Joint Products as Example]. [医疗器械和 IVD 医疗器械安全和性能基本原则的应用探讨：以人工关节产品为例]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230072

Jiayi Sun, Xinli Shi, Shiqing Zhang

引用次数: 0

[Common Problems and Improvement Suggestions for the Special Review Application of Shanghai's Class Ⅱ Innovative Medical Device]. [上海市Ⅱ类创新医疗器械专项审评申请常见问题及改进建议]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230219

Qiong Xie

引用次数: 0

[Design and Fabrication of Porous Implants Manufactured by 3D Printing]. [利用三维打印技术设计和制造多孔植入物]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230287

Yan Wu, Yudong Wang, Mengxing Liu, Dufang Shi, Nan Hu, Wei Feng

引用次数: 0

[pMBRT: Principles and Design of Advanced Proton Radiotherapy Techniques]. [pMBRT：先进质子放疗技术的原理与设计]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230208

Xiaowa Wang, Ning Du, Lan Wang

引用次数: 0

[Research Progress and Design Strategy of Hemostatic Adhesives]. [止血粘合剂的研究进展与设计策略]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230152

Chenyu Zhao, Han Wang, Qianqian Han

引用次数: 0

[Application Research of Vector Flow Technique on Convex Array Ultrasonic Probe of Abdomen]. [腹部凸阵超声探头的矢量流技术应用研究]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230086

Penghui Hao, Yigang Du, Shuangshuang Li, Lei Zhu, Xujin He

{"title":"[Application Research of Vector Flow Technique on Convex Array Ultrasonic Probe of Abdomen].","authors":"Penghui Hao, Yigang Du, Shuangshuang Li, Lei Zhu, Xujin He","doi":"10.3969/j.issn.1671-7104.230086","DOIUrl":"https://doi.org/10.3969/j.issn.1671-7104.230086","url":null,"abstract":"Vector flow imaging (VFI) is an innovative ultrasound flow measurement technology. Compared with the traditional color Doppler and spectral Doppler, VFI has the advantages of independence of angle correction and direct acquisition of real-time amplitude and direction of flow. Transverse oscillation (TO) method is one of the effective methods for vector flow imaging. However, a complete and detailed algorithm validation process based on commercial ultrasound machines is still lacking due to more complex convex probes. This study starts with introducing the imaging process and principle of transverse oscillation vector flow technique, and calculates the error between the set velocity value and the measured velocity value through the simulation experiment, and verifies the error between the set velocity value and the measured velocity value through the Doppler flow phantom experiment. Among them, the velocity value measured by the TO vector flow technique in the simulation experiment is 0.48 m/s and the preset value is 0.50 m/s, the error between them is -4%. The velocity values are 8.33, 11.14, 14.44 and 16.67 cm/s measured by the Doppler flow phantom experiment, the actual velocity values are 7.97, 10.78, 14.06 and 17.34 cm/s, the errors between them are all within ±5%. Both experiments verify the feasibility of using vector flow technique on abdominal convex probe.","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139934158","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: 0

[Development of a Three-Wavelength Brain Tissue Oxygen Monitoring System Based on Near Infrared Spectrum]. [基于近红外光谱的三波长脑组织氧监测系统的开发]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230207

Zexi Li, Hanlin Li, Qi Yin, Shijie Cai, Jilun Ye, Xu Zhang, Hui Yu, Dahai Gou

引用次数: 0

[Reliability Thermal Design, Simulation and Experimental Verification of Electronic Monitoring Unit for Magnetic Resonance System]. [磁共振系统电子监控装置的可靠性热设计、模拟和实验验证]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230337

Tingwei Liu, Cunli Zhang, Yahong Wang, Huaiyu Dong, Yuehan Jin

{"title":"[Reliability Thermal Design, Simulation and Experimental Verification of Electronic Monitoring Unit for Magnetic Resonance System].","authors":"Tingwei Liu, Cunli Zhang, Yahong Wang, Huaiyu Dong, Yuehan Jin","doi":"10.3969/j.issn.1671-7104.230337","DOIUrl":"https://doi.org/10.3969/j.issn.1671-7104.230337","url":null,"abstract":"The monitoring unit used in the nuclear magnetic resonance system, as an important unit of the system, faces a high thermal risk during its entire life cycle. This paper ensures the high efficiency and reliability of the thermal design of the product module from the two dimensions of structural design and device derating design. In order to reduce the risk of thermal design of electronic modules and comprehensively verify the effectiveness of thermal design of electronic modules, the design verification is carried out by combining simulation and experiment. In the simulation process, by establishing a thermal simulation model at the circuit board level, the crustal temperature of the core device is numerically calculated, and the index is compared with the thermal design index value and the test value, on the one hand, to verify the correctness of the simulation model. On the other hand, the validity of thermal design is verified. In the testing process, a thermal test platform for product modules is built, and the thermal characteristics test values of the core components of the module under extreme electrical conditions are obtained, and the corresponding conversion methods are used to predict the thermal performance and thermal design margin of the product at different altitudes. The results show that the electronic module can meet the thermal design requirements in terms of structural design and derating design of core components, and can ensure that the product module can work safely and reliably during the entire life cycle of the NMR system.","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139934140","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: 0

[Application Progress of Resting-State Functional Magnetic Resonance Imaging in Study of Default Mode Network in Patients with Vascular Cognitive Impairment]. [静息状态功能磁共振成像在血管性认知障碍患者默认模式网络研究中的应用进展]。

Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation Pub Date : 2024-01-30 DOI: 10.3969/j.issn.1671-7104.230141

Xue Wang, Yali Niu, Jing Wang, Xiaona Chen, Chunxiao Wan

{"title":"[Application Progress of Resting-State Functional Magnetic Resonance Imaging in Study of Default Mode Network in Patients with Vascular Cognitive Impairment].","authors":"Xue Wang, Yali Niu, Jing Wang, Xiaona Chen, Chunxiao Wan","doi":"10.3969/j.issn.1671-7104.230141","DOIUrl":"https://doi.org/10.3969/j.issn.1671-7104.230141","url":null,"abstract":"Vascular cognitive impairment（VCI） is a group of syndromes ranging from mild cognitive impairment to dementia caused by cerebrovascular disease, due to the lack of sensitivity and specific biomarkers, it is difficult to identify and diagnose early. Abnormal connectivity is observed in brain regions of patients with vascular cognitive disorders, locates mainly in the default mode network（DMN）, and changes in their abnormal functional connectivity correlated with the degree of patients' cognitive impairment. Resting-state functional magnetic resonance imaging(rs-fMRI) is a commonly used method to detect the internal activity of the brain at resting state. The use of various rs-fMRI to study abnormal changes in the DMN in patients with VCI is useful to further investigate the pathogenesis of VCI and provide an objective basis for imaging. This article mainly reviews the application of rs-fMRI in the DMN in patients with VCI, bringing new perspectives for the correct diagnosis and assessment of VCI.","PeriodicalId":52535,"journal":{"name":"Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139934157","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: 0