中国医疗器械杂志最新文献_第6页

[Clinical Application and Clinical Evaluation Concerns of Embolization Microspheres]. 【栓塞微球的临床应用及临床评价问题】。

中国医疗器械杂志 Pub Date : 2024-11-30 DOI: 10.12455/j.issn.1671-7104.240205

Jing Liu, Jiaying Guo

引用次数: 0

[Intestinal Polyp Segmentation Based on Histogram Equalization ResNet (PE-ResNet)]. 基于直方图均衡化ResNet （PE-ResNet）的肠息肉分割[j]。

中国医疗器械杂志 Pub Date : 2024-11-30 DOI: 10.12455/j.issn.1671-7104.240235

Yukun An, Biao Zhang, Ming Yang, Qiyong Lin, Ping Zhou

引用次数: 0

[Treatment Couch Path Planning for Proton Therapy Systems]. [质子治疗系统的治疗通道规划]。

中国医疗器械杂志 Pub Date : 2024-11-30 DOI: 10.12455/j.issn.1671-7104.240122

Rong Xie, Jianchun Deng, Hai Ma, Zhiyong Yang

引用次数: 0

[Design of a Conformal Ablation System Based on Independent Control of Radiofrequency Electrode Arrays]. [基于射频电极阵列独立控制的共形消融系统设计]。

中国医疗器械杂志 Pub Date : 2024-09-30 DOI: 10.12455/j.issn.1671-7104.240171

Jincheng Zou, Aili Zhang

引用次数: 0

[Research Progress of Transcatheter Tricuspid Regurgitation Repair Device]. [经导管三尖瓣反流修复装置的研究进展]。

中国医疗器械杂志 Pub Date : 2024-09-30 DOI: 10.12455/j.issn.1671-7104.240097

Fengtao Hao, Yixin He

引用次数: 0

[Bowel Sounds Detection Method Based on ResNet-BiLSTM and Attention Mechanism]. [基于 ResNet-BiLSTM 和注意力机制的肠鸣音检测方法]。

中国医疗器械杂志 Pub Date : 2024-09-30 DOI: 10.12455/j.issn.1671-7104.240043

Yali Hao, Xianrong Wan, Congqing Jiang, Xianghai Ren, Xiaoming Zhang, Xiang Zhai

{"title":"[Bowel Sounds Detection Method Based on ResNet-BiLSTM and Attention Mechanism].","authors":"Yali Hao, Xianrong Wan, Congqing Jiang, Xianghai Ren, Xiaoming Zhang, Xiang Zhai","doi":"10.12455/j.issn.1671-7104.240043","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.240043","url":null,"abstract":"Bowel sounds can reflect the movement and health status of the gastrointestinal tract. However, the traditional manual auscultation method has subjective deviation and is time-consuming and labor-intensive. In order to better assist doctors in diagnosing bowel sounds and improve the reliability and efficiency of bowel sound detection, this study proposed a deep neural network model that combines a residual neural network (ResNet), a bidirectional long short-term memory network (BiLSTM), and an attention mechanism. Firstly, a large number of labeled clinical data was collected using the self-developed multi-channel bowel sound acquisition system, and the multi-scale wavelet decomposition and reconstruction method was used to preprocess the bowel sounds. Then, log Mel spectrogram features were extracted and sent to the network for training. Finally, the performance and effectiveness of the model were evaluated and verified by 10-fold cross-validation and an ablation experiment. The experimental results showed that the precision, recall, and F 1 score of the model reached 83%, 76%, and 79%, respectively, and it could effectively detect bowel sound segments and locate their start and end times, performing better than previous algorithms. This algorithm can not only provide auxiliary information for doctors in clinical practice but also offer technical support for further analysis and research of bowel sounds.","PeriodicalId":52535,"journal":{"name":"中国医疗器械杂志","volume":"48 5","pages":"498-504"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512728","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

[Discussion on Progress of Intracranial Aneurysm Interventional Therapy Instruments]. [颅内动脉瘤介入治疗仪器进展讨论]。

中国医疗器械杂志 Pub Date : 2024-09-30 DOI: 10.12455/j.issn.1671-7104.230326

Han Zhang, Ping Liu, Qinglong Liu

引用次数: 0

[Magnetically Induced Displacement Force Test Method for Ultralight Implants Based on Counterweight Correction Method]. [基于配重校正法的超轻植入体磁感应位移力测试方法]。

中国医疗器械杂志 Pub Date : 2024-09-30 DOI: 10.12455/j.issn.1671-7104.230711

Yong Yin, Jin Deng, Xiaomei Wu

{"title":"[Magnetically Induced Displacement Force Test Method for Ultralight Implants Based on Counterweight Correction Method].","authors":"Yong Yin, Jin Deng, Xiaomei Wu","doi":"10.12455/j.issn.1671-7104.230711","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.230711","url":null,"abstract":"ASTM (American Society for Testing and Materials) F2052-21 (Chinese corresponding standard titled as YY/T 0987.2) introduces a test method to measure the magnetically induced displacement force on medical devices in the magnetic resonance environment. This method has been widely accepted and utilized globally, which is intended for implantable medical devices that can be suspended from a string. The angular deflection of the string from the vertical is measured and thereby measuring out the magnitude of the magnetically induced deflection force relative to gravity. When applying this method on ultralight implants, it is practically almost impossible to use a suspension string that weighs less than 1% of the mass of the implant. That study proposes a method for measuring the magnetically induced displacement force on ultralight implants based on counterweight correction by using a string and clamp that exceed 1% of the weight of the implant. And then to measure the deflection angle according to the standard requirement, following that to correct the deflection angle by using the proportion of the mass of the implant under test to the total mass of the tested object, to obtain the measurement result. That study also provides theoretical calculations and experimental verification to the counterweight correction method, the results prove that the proposed method can effectively measure the magnetically induced displacement force on ultralight implants.","PeriodicalId":52535,"journal":{"name":"中国医疗器械杂志","volume":"48 5","pages":"473-477"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512751","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

[Research on Test Method of Active Medical Device Preset Service Life Evaluation]. [有源医疗器械预设使用寿命评估测试方法研究]。

中国医疗器械杂志 Pub Date : 2024-09-30 DOI: 10.12455/j.issn.1671-7104.240046

Fei He, Weiming Wang

{"title":"[Research on Test Method of Active Medical Device Preset Service Life Evaluation].","authors":"Fei He, Weiming Wang","doi":"10.12455/j.issn.1671-7104.240046","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.240046","url":null,"abstract":"When applying for registration of an active medical device, it is necessary to submit research and verification data regarding the device's service life. This study primarily proposes how to verify and evaluate the preset service life of active medical devices through reliability testing. Initially, the definition of the product's service life is introduced. Subsequently, the determination of the test sample size, the type and magnitude of the test stress, the conventional test duration, the accelerated test duration, and the evaluation of the service life of the active medical device based on the test results are elucidated. Finally, an example of evaluating the service life of a non-invasive ventilator is provided for further illustration. This study offers a comprehensive closed-loop process for verifying and evaluating the preset service life of active medical devices using the test method, providing a scientific, reasonable, practical, and exhaustive test evaluation approach for enterprises and regulatory agencies. This has broad significance for universal dissemination and aids enterprises and testing institutions in conducting pertinent research and verification tasks.","PeriodicalId":52535,"journal":{"name":"中国医疗器械杂志","volume":"48 5","pages":"586-590"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512780","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

[Discussion on Magnetic Resonance Compatibility of Implantable Brain-Computer Interface Devices]. [讨论植入式脑机接口设备的磁共振兼容性]。

中国医疗器械杂志 Pub Date : 2024-09-30 DOI: 10.12455/j.issn.1671-7104.240232

Kaixiang Jin, Xun Liu, Sheng Hu, Yonghua Li, Yuetong Wu, Jiaxing Li, Chenghuai Mo

{"title":"[Discussion on Magnetic Resonance Compatibility of Implantable Brain-Computer Interface Devices].","authors":"Kaixiang Jin, Xun Liu, Sheng Hu, Yonghua Li, Yuetong Wu, Jiaxing Li, Chenghuai Mo","doi":"10.12455/j.issn.1671-7104.240232","DOIUrl":"https://doi.org/10.12455/j.issn.1671-7104.240232","url":null,"abstract":"Brain-computer interface (BCI) devices are crucial tools for neural stimulation and recording, offering broad prospects in the diagnosis and treatment of neurological disorders. Furthermore, magnetic resonance imaging (MRI) is an effective and non-invasive technique for capturing whole-brain signals, providing detailed information on brain structures and activation patterns. Integrating the neural stimulation/recording capabilities of BCI devices with the non-invasive detection function of MRI is considered highly significant for brain function analysis. However, this combination imposes specific requirements on the magnetic and electronic performance of neural interface devices. The interaction between BCI devices and MRI is initially explored. Subsequently, potential safety risks arising from their combination are summarized and organized. Starting from the source of these hazards, such as the metallic electrodes and wires of BCI devices, the issues are analyzed, and current research countermeasures are summarized. In conclusion, the regulatory oversight of BCI's magnetic resonance safety is briefly discussed, and suggestions for enhancing the magnetic resonance compatibility of related BCI devices are proposed.","PeriodicalId":52535,"journal":{"name":"中国医疗器械杂志","volume":"48 5","pages":"486-492"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142512747","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