Journal of Medical Devices-Transactions of the Asme最新文献_第5页

Multi-Manipulator Robotic System for Ultrasound Tomography: Design, Calibration, and Image Results 超声断层扫描的多机械手机器人系统:设计、校准和图像结果

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-09-16 DOI: 10.1115/1.4055655

Xiang Zhang, G. Ely, Bonghun Shin, B. Anthony

{"title":"Multi-Manipulator Robotic System for Ultrasound Tomography: Design, Calibration, and Image Results","authors":"Xiang Zhang, G. Ely, Bonghun Shin, B. Anthony","doi":"10.1115/1.4055655","DOIUrl":"https://doi.org/10.1115/1.4055655","url":null,"abstract":"\u0000 In this article, we present the design, validation, and imaging capabilities of a MEchanically Discretized Ultrasound Scanning Apparatus (MEDUSA) that supports flexible development of UST algorithms for complex tissue structures. Ultrasound tomography (UST) in the recent decade has shown promising results in quantitative soft-tissue imaging for clinical breast cancer diagnostics. There is growing interest in applying tomographic techniques to image broader tissue structures that include bone, where imaging is significantly more challenging due to strong impedance mismatches and complex wave propagation within the region. Changes in data acquisition strategy, algorithms, and system design are necessary to enable quantitative imaging of soft-tissue with bone inclusions. The 36 degree of freedom MEDUSA system allows free space positioning of acoustic transducers around an imaging target and enables investigation of imaging strategies not available in other UST systems. We present the mechanical design, parameter calibration, and tomographic imaging results using MEDUSA. Mono/Bi-static imaging and full-waveform inversion (FWI) results on real targets are presented and validates system performance capabilities for broader UST algorithm development for more complex tissue structures","PeriodicalId":49305,"journal":{"name":"Journal of Medical Devices-Transactions of the Asme","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43277648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design, Analysis, and Control of A User-Adaptive 用户自适应的设计、分析和控制

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-09-05 DOI: 10.1115/1.4055521

Yuan Zhou, Lu Liu

引用次数: 0

Research on Movement Intentions of Human's Left and Right Legs Based on EEG Signals 基于脑电图信号的人左右腿运动意图研究

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-09-02 DOI: 10.1115/1.4055435

Fangyan Dong, Liangdan Wu, Yongfei Feng, Dongtai Liang

{"title":"Research on Movement Intentions of Human's Left and Right Legs Based on EEG Signals","authors":"Fangyan Dong, Liangdan Wu, Yongfei Feng, Dongtai Liang","doi":"10.1115/1.4055435","DOIUrl":"https://doi.org/10.1115/1.4055435","url":null,"abstract":"\u0000 Active rehabilitation training method can help stroke patients recover better and faster. However, the lower limb rehabilitation robot based on electroencephalogram (EEG) has low recognition accuracy now. A classification method based on EEG signals of motor imagery is proposed to enable patients to accurately control their left and right legs. Firstly, aiming at the unstable characteristics of EEG signals, an experimental protocl of motor imagery was constructed based on multi-joint motion coupling of left and right legs. The signals with time-frequency analysis and ERD/S analysis have proved the reliability and validity of the collected EEG signals. Then, the EEG signals generated by the protocol were preprocessed and Common Space Pattern (CSP) was used to extract their features. Support Vector Machine (SVM) and Linear Discriminant Analysis (LDA) are adapted and their accuracy of classification results are compared. Finally, on the basis of the proposed classifier with excellent performance, the classifier is used in the active control strategy of the lower limb rehabilitation robot, and the experiment verified that the average accuracy of two volunteers in controlling the lower limb rehabilitation robot reached 95.1%. This research provides a good theoretical basis for the realization and application of brain-computer interface in rehabilitation training.","PeriodicalId":49305,"journal":{"name":"Journal of Medical Devices-Transactions of the Asme","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47492728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

On the Design and Testing of an Origami Inspired Nasal Cover: Mitigating Aerosol Risks During Endoscopic Sinus Procedures 折纸启发的鼻罩的设计和测试：降低鼻窦内窥镜手术中的气溶胶风险

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-08-16 DOI: 10.1115/1.4055251

Evan Heatherington, Xiaoyue Zhao, N. Goyal, Z. Ounaies, M. Frecker

{"title":"On the Design and Testing of an Origami Inspired Nasal Cover: Mitigating Aerosol Risks During Endoscopic Sinus Procedures","authors":"Evan Heatherington, Xiaoyue Zhao, N. Goyal, Z. Ounaies, M. Frecker","doi":"10.1115/1.4055251","DOIUrl":"https://doi.org/10.1115/1.4055251","url":null,"abstract":"\u0000 Aerosols generated during endoscopic sinus procedures present a concern to the health and safety of healthcare personnel especially with the presence of COVID-19. The purpose of this study is to describe the design and testing of a nasal cover to restrict aerosolized pathogens. The nasal cover was designed to sit overtop the nose with conformal slits for insertion of endoscopic instrumentation. Polydimethylsiloxane (PDMS) was chosen as the nasal mask material and its composition, thickness, and slit geometry were selected using a Taguchi experimental design and survey with clinical collaborators at Penn State Milton S. Hershey Medical Center. The nasal cover was designed using principles of origami engineering to be manufactured flat then folded into its operating state. Form and functionality were evaluated by surgeons, fellows, and residents in the aforementioned survey. Aerosol containment was evaluated by measuring smoke, representative of surgical aerosols, with an optical particle counter. A 25:1 composition PDMS with 3mm thickness and vertical slit geometry was chosen for the nasal cover design. Survey results demonstrated that the origami cover sat well on the nose and did not significantly impact the surgical conditions with single instrumentation. On average, this nasal cover was found to restrict more than 93% of 0.3µm aerosols, and more than 99% of all aerosols larger than 0.5µm in size. Use of a patient worn nasal cover has the potential to drastically reduce the risk to hospital personnel during endonasal surgeries by reducing aerosol generation and potential pathogen spread.","PeriodicalId":49305,"journal":{"name":"Journal of Medical Devices-Transactions of the Asme","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46127152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbiota Sampling Capsule: Design, Prototyping and Assessment of a Sealing Solution Based on a Bistable Mechanism 微生物取样胶囊:基于双稳态机制的密封溶液的设计、原型和评估

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-08-16 DOI: 10.1115/1.4055250

Mouna Ben Salem, Guillaume Aiche, Y. Haddab, L. Rubbert, P. Renaud

{"title":"Microbiota Sampling Capsule: Design, Prototyping and Assessment of a Sealing Solution Based on a Bistable Mechanism","authors":"Mouna Ben Salem, Guillaume Aiche, Y. Haddab, L. Rubbert, P. Renaud","doi":"10.1115/1.4055250","DOIUrl":"https://doi.org/10.1115/1.4055250","url":null,"abstract":"\u0000 The diagnosis and the treatment of gastrointestinal pathologies have experienced significant development in recent years with the invention of endoscopic capsules which facilitate the access to different sections of the gastrointestinal tract. At a research level, the concept of capsules has been used to perform several functions such as gastrointestinal tract inspection and drug delivery. Despite that, microbiota sampling still requires surgery in order to collect intestinal liquid samples. In this paper, we propose a microbiota sampling device that navigates through the gastrointestinal tract, takes a sample of the intestinal liquid and protects it from any contamination as the device navigates out of the human body. We use a bistable structure to close the capsule after sampling actuated by a foam. The device is safe for the human body and eco friendly, as it does not contain electronic components, batteries and does not require any external intervention. To manufacture the microbiota sampling capsule, we use additive manufacturing. This technology allows fast prototyping cycle at a relatively low cost. It also offers the use of biocompatible material in advanced stages of development.","PeriodicalId":49305,"journal":{"name":"Journal of Medical Devices-Transactions of the Asme","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46347609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D Printing in Combined Cartesian and Curvilinear Coordinates 笛卡尔坐标系和曲线坐标系下的三维打印

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-07-23 DOI: 10.1115/1.4055064

Edward Shi, Leo Lou, Linnea Warburton, B. Rubinsky

{"title":"3D Printing in Combined Cartesian and Curvilinear Coordinates","authors":"Edward Shi, Leo Lou, Linnea Warburton, B. Rubinsky","doi":"10.1115/1.4055064","DOIUrl":"https://doi.org/10.1115/1.4055064","url":null,"abstract":"\u0000 A 3D printing technology that facilitates continuous printing along a combination of cartesian and curvilinear coordinates, designed for in vivo and in situ bioprinting is introduced. The combined cartesian/curvilinear printing head motion is accomplished by attaching a biomimetic, flexible, \"tendon cable\" soft robot arm to a conventional cartesian three axis 3D printing carousel. This allows printing along a combination of cartesian and curvilinear coordinates using five independent stepper motors controlled by an Arduino Uno with each motor requiring a microstep driver powered via a 12V power supply. Three of the independent motors control the printing head motion along conventional cartesian coordinates while two of the independent motors control the length of each pair of the four \"tendon cables\" which in turn controls the radius of curvature and the angle displacement of the soft printer head along two orthogonal planes. This combination imparts motion along six independent degrees of freedom in cartesian and curvilinear coordinates. The design of the system is described together with experimental results which demonstrate that this design can print continuously along curved and inclined surfaces while avoiding the \"staircase\" effect, which is typical of conventional three axis 3D printing along curvilinear surfaces.","PeriodicalId":49305,"journal":{"name":"Journal of Medical Devices-Transactions of the Asme","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42704362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Accuracy of an Apparatus for Measuring Glenoid Baseplate Micromotion in Reverse Shoulder Arthroplasty 反向肩关节置换术中关节盂底微运动测量仪的准确性

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-07-22 DOI: 10.1115/1.4055063

L. Torkan, J. T. Bryant, R. Bicknell, H. Ploeg

{"title":"Accuracy of an Apparatus for Measuring Glenoid Baseplate Micromotion in Reverse Shoulder Arthroplasty","authors":"L. Torkan, J. T. Bryant, R. Bicknell, H. Ploeg","doi":"10.1115/1.4055063","DOIUrl":"https://doi.org/10.1115/1.4055063","url":null,"abstract":"\u0000 Reverse shoulder arthroplasty (RSA) is used to treat patients with cuff tear arthropathy. Loosening remains one of the principal modes of implant failure and the main complication leading to revision. Excess micromotion contributes to glenoid loosening. This study assessed the predictive accuracy of an experimental system designed to assess factors contributing to RSA glenoid baseplate micromotion. A half-fractional factorial experiment was designed to assess 4 factors: central element type (screw vs. peg), central element length (13.5 vs. 23.5 mm), anterior posterior peripheral screw type (locking vs. nonlocking) and cancellous bone density (10 vs. 25 pounds per cubic foot [pcf]). Four linear variable differential transducers (LVDTs) recorded micromotion from a stainless-steel disc surrounding a modified glenosphere. The displacements were used to interpolate micromotion at each of the respective peripheral screw positions. The mean absolute percentage error (MAPE) was used to determine the predictive accuracy and error range of the system. The MAPE for each condition ranged from 6.8% to 12.9% for an overall MAPE of (9.5±0.9)%. The system had an error range of 2.7 µm to 20.1 µm, which was lower than those reported by prior studies using optical systems. One of the eight conditions had micromotion that exceeded 150 µm. These findings support the use of displacement transducers, specifically LVDTs, as an accurate system for determining RSA baseplate micromotion in rigid polyurethane foam bone surrogates.","PeriodicalId":49305,"journal":{"name":"Journal of Medical Devices-Transactions of the Asme","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46742864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance and Sensitivity Analysis of an Automated X-Ray Based Total Knee Replacement Mass-Customization Pipeline 基于x射线的全膝关节置换术批量定制管道的性能和灵敏度分析

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-07-15 DOI: 10.1115/1.4055000

T. A. Burge, J. Jeffers, C. Myant

{"title":"Performance and Sensitivity Analysis of an Automated X-Ray Based Total Knee Replacement Mass-Customization Pipeline","authors":"T. A. Burge, J. Jeffers, C. Myant","doi":"10.1115/1.4055000","DOIUrl":"https://doi.org/10.1115/1.4055000","url":null,"abstract":"\u0000 A proof-of-concept, fully automated, mass-customization pipeline for knee replacement surgery is outlined. The pipeline aims to address the limitations of currently available customization solutions by removing the need for 3D imaging and manual design, minimizing lead times, and reducing costs, whilst enabling improved patient outcomes.\u0000 The dataflow of the pipeline and methods for assessing performance are detailed. A digitally reconstructed radiograph method was adopted in the analysis to remove errors stemming from poor X-ray alignment and calibration, and to enable the influence of specific attributes to be evaluated. A sensitivity study was performed to quantify the impact of X-ray alignment and calibration.\u0000 The analysis found better results were achieved for the tibia over the femur in terms of clinically significant component over/under-hang (9% vs 18%). The pipeline was sensitive to subject ethnicity, but this was likely due to limited diversity in the training data. Arthritis severity was found to impact performance, suggesting further work is required to confirm suitability for use with more severe cases. X-ray alignment and dimensional calibration were shown to be paramount for accurate results. The pipeline performance was demonstrated to be superior to results reported for off-the-shelf implants, but customization solutions based on 3D imaging could afford marginally better results.\u0000 In summary, the study validated the pipeline for a broad range of subjects, highlighted its potential advantages over both off-the-shelf and other customization alternatives, and outlined the potential challenges of adopting such a tool.","PeriodicalId":49305,"journal":{"name":"Journal of Medical Devices-Transactions of the Asme","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48801554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Novel Low-Cost 3D Printed Brace Design Method for Early Onset Scoliosis 一种治疗早期脊柱侧凸的低成本3D打印支架设计方法

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-07-15 DOI: 10.1115/1.4054998

Hongwei Li, Zhangkai Yang, Dichen Li, F. Qiao

{"title":"A Novel Low-Cost 3D Printed Brace Design Method for Early Onset Scoliosis","authors":"Hongwei Li, Zhangkai Yang, Dichen Li, F. Qiao","doi":"10.1115/1.4054998","DOIUrl":"https://doi.org/10.1115/1.4054998","url":null,"abstract":"\u0000 Early onset scoliosis (EOS) is a type of spine deformity that presents before 10 years of age. The biomechanical properties in scoliosis have been found to be di?erent, especially in the case of the concave and convex paraverte-bral muscles. Based on this fact, a novel 3d printed patient-specific asymmetric stiffness brace design method is proposed in this paper, aiming to provide asymmetric stiffness to match \"imbalanced\" biomechanical properties of the concave and convex paravertebral muscles, respectively, and treat EOS by applying the block-structure brace.A 3d CAD draft model of the brace contour was implemented from 3D scanning. The asymmetric stiffness block-structure brace was designed in Rhinoceros and the Finite Ele-ment (FE) model was imported into ABAQUS. FE simulation was employed to study the mechanical characteristics of the brace, which provided a quan-titative index for the \"imbalanced\" property of brace stiffness. The results of the FE simulation showed that the stiffnesses of the concave and convex sides were 145.88 N/mm and 35.95 N/mm, respectively. The block-structure brace was fabricated using 3d printing. Asymmetric stiffness was evaluated by corrective force measurements, which were obtained from a thin-film pressure sensor equipped on the brace. The patient-specific asymmetric stiffness brace was applied to clinical practice in a one-year old EOS patient. A novel low-cost 3D printed brace design method for EOS was proposed in this study that could potentially be useful in patient treatment acceptance.","PeriodicalId":49305,"journal":{"name":"Journal of Medical Devices-Transactions of the Asme","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49221053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Design, Improvement and Evaluation of a Novel in Situ Implanted Bionic Artificial Anal Sphincter 一种新型原位植入仿生人工肛门括约肌的设计、改进与评价

IF 0.9 4区医学

Journal of Medical Devices-Transactions of the Asme Pub Date : 2022-07-15 DOI: 10.1115/1.4055001

Lichao Wang, G. Yan, Ding Han, Dasheng Liu, Fangfang Hua, Tong Wu

{"title":"Design, Improvement and Evaluation of a Novel in Situ Implanted Bionic Artificial Anal Sphincter","authors":"Lichao Wang, G. Yan, Ding Han, Dasheng Liu, Fangfang Hua, Tong Wu","doi":"10.1115/1.4055001","DOIUrl":"https://doi.org/10.1115/1.4055001","url":null,"abstract":"\u0000 Artificial anal sphincter has gradually become an emerging means of treating anal incontinence. However, most of the systems cannot be implanted in the human body for a long time due to insufficient reliability. Therefore, this paper has designed and improved a novel bionic artificial anal sphincter (BAAS). In order to make it work reliably for a long time, we first optimized and improved key parts to increase their strength. Given the humid working environment in the body, we optimized the design of the waterproof pressure sensor and carried out experimental research on the sealing of the circuit board and the overall sealing. When evaluating the improved system, I used simulation to analyze the structural strength and motion characteristics of the BAAS and used underwater experiments to simulate the human environment to evaluate the waterproofness of the system. The results showed that the strength of the key joint increased by 49.4%, the average clamping time and opening time of the prosthesis were 14.5s and 13.4s, respectively, and the angular velocity of the pendulum rod approaching the intestine was about 4.5°/s, which was in line with the normal defecation process of the human body. The performance is stable and reliable in the 20-day underwater body fluid simulation experiment. BAAS basically meets the application needs of long-term implantation in the treatment of fecal incontinence.","PeriodicalId":49305,"journal":{"name":"Journal of Medical Devices-Transactions of the Asme","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48436624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0