Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 39 for “"implantable medical devices"”.
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Mass transport in implantable medical devices
Thesis (Ph. D.)--Massachusetts Institute of Technology, Whitaker College of Health Sciences and Technology, 1998.
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Model Validation and Inversion of Active Implantable Medical Devices
The model validation and inversion for active implantable medical devices (AIMD) used for safety evaluations under magnetic resonance imaging (MRI) radio frequency (RF) coil emission were discussed. A mathematical derivation is presented to provide guidance on selecting meaningful pathways for the …
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Encryption on the air : non-Invasive security for implantable medical devices
Modern implantable medical devices (IMDs) including pacemakers, cardiac defibrillators and nerve stimulators feature wireless connectivity that enables remote monitoring and post-implantation adjustment. However, recent work has demonstrated that flawed security tempers these medical benefits. In …
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Ultra-low-power circuits and systems for wearable and implantable medical devices
… in the health industry. In the area of wearable devices, the miniaturization of electronics has spurred the rapid development of wearable vital signs, activity, and fitness monitors. Maximizing the time between battery recharge places stringent requirements on power consumption by the device. For …
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Use of Bioheat Modeling to Characterize and Optimize Implantable Medical Devices and Neuromodulation Technologies
<p>Medical device development includes prototyping, benchtop characterization, preclinical studies, and clinical trials. Understanding the limitations and potential adverse effects of medical devices prior to their administration in humans is a crucial first step. Optimizing medical devices is …
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MRI Safety Evaluation of Dual Leads and Fractured Leads Active Implantable Medical Devices in MRI
… is of great concern for patients with active implantable medical devices (AIMDs) undergo MR scanning. RF safety evaluation of AIMDs consists of two steps: (1) the development of the AIMD model (i.e., transfer function (TF) method), and (2) the extraction of the incident E-field along …
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Advancing Next-Generation Active Implantable Medical Devices - System Design and Integration for Long-Term Therapeutic Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
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Novel Methods of RF-induced Heating Assessment and Heating Reduction Techniques for Active Implantable Medical Devices in MRI
Radiofrequency (RF)-induced heating of active implantable medical devices (AIMDs) is a significant concern during magnetic resonance imaging (MRI). According to the tier-three approach proposed in ISO 10974, the device model (i.e., the transfer function [TF]) of AIMD should be developed and …
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Universal Engineering Programmer – An In-House Development Tool for Developing and Testing Implantable Medical Devices in St. Jude Medical
… defibrillator device, engineers in the St. Jude Medical Cardiac Rhythm Management Division use an in-house development tool called Universal Engineering Programmer (UEP) to ensure the device functions as expected, before it can be used to test on an animal or a human during the implantation …
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Comprehensive MRI Safety Assessment: Impact of Strain-Relief Loop Position, Lateral Movement, and Varying Field Strengths on RF-Induced Heating of Medical Implants
… Despite its benefits, individuals with active implantable medical devices (AIMDs) and passive implantable medical devices (PIMDs) are often restricted from undergoing MRI due to potential RF interactions with the metallic components of these implants, which can lead to thermal damage to …
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Measurements of MRI Induced Heating
… can however be problematic for patients with implantable medical devices. The RF induced heating on twenty-four titanium rods with different diameters, coatings, and lengths, were placed, within a phantom of gelled saline, inside a 1.5 T, 64 MHz test system for 15 minutes, one-by-one. Thermal …
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An Effective Transcutaneous Energy Transfer (TET) System for Artificial Hearts
Smart implantable medical devices such as cochlear implants, cardiac pacemakers and artificial heart pumps, consume electrical energy for the lifetime of the patient. The method of power delivery in these devices is principally dependent on their power requirements. Low power implantable devices, …
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A 0.45 V low power high PSRR subthreshold CMOS voltage reference
… such as passive RFID’s, wearable and implantable medical devices. Also, BGRs use resistors that need more area on silicon. One possible solution to meet the low power requirement is to operate MOSFETs in subthreshold region. Most often, forward biased PN-junctions of BGRs are …
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Low power data acquisition for microImplant biometric monitoring of tremors
In recent years, trends in the medical industry have created a growing demand for implantable medical devices. In particular, the need to provide doctors a means to continuously monitor biometrics over long time scales with increased precision is paramount to efficient healthcare. To make medical …
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Effect of Physical and Chemical Cues on Candida albicans Morphological Expression and Biofilm Formation
… for annually causing 100,000 deaths and medical expenses estimated to be $35-45 billion. Physical and chemical surface modification techniques are thought to be critical in the fight against biofilm formation within medical settings. Nanoscale structural features have been found to have …
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Digitally-assisted, ultra-low power circuits and systems for medical applications
In recent years, trends in the medical industry have created a growing demand for a variety of implantable medical devices. At the same time, advances in integrated circuits techniques, particularly in CMOS, have opened possibilities for advanced implantable systems that are very small and consume …
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Energy-Efficient Security Solutions for Next-Generation Embedded Systems
… Firstly, it proposed to improve the security of implantable medical devices through dual-factor authentications that incorporate human responses alongside cryptographic security. Secondly, this thesis also examines the side-channel security vulnerabilities of embedded Neural Network …
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Energy-efficient protocol and hardware for security of implantable devices
… of microelectronic has fueled the development of implantable and wearable devices by enabling them with increased functionality and features. According to the report, global active implantable medical devices (IMDs) market was valued at approximately USD 16.47 billion in 2017 and is expected to …
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Techniques for low power analog, digital and mixed signal CMOS integrated circuit design
… continuously expanding of market for portable devices such as wireless communication devices, portable computers, consumer electronics and implantable medical devices, low power is becoming increasingly important in integrated circuits. The low power design can increase operation time and/or …
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Asic Design of RF Energy Harvester Using 0.13UM CMOS Technology
… in wireless sensor nodes, data acquisition devices, wearable and implantable medical devices have paved way for low power (sub 50uW) devices. These devices generally use small solid state or thin film batteries for power supply which need replacement or need to be removed for charging. RF …
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