Medical Device Eng.
IEC 60601, FDA 510(k), biocompatibility, biosignal electronics, and medical device design/compliance.
320 topics · 1 with articles
Intern Engineer· 40
- Acoustic Properties of Tissue: Ultrasound Impedance, Attenuation
- Autonomic Nervous System: Sympathetic and Parasympathetic Indicators
- Biophotonics: Fluorescence, Raman Spectroscopy in Medicine
- Blood Glucose Reference Range: Fasting, Postprandial, HbA1c
- Blood Pressure: Systolic, Diastolic, Pulse Pressure, MAP
- Body Impedance: Bioimpedance Analysis (BIA) for Composition
- Brain Waves: Delta, Theta, Alpha, Beta, Gamma EEG Bands
- CT Hounsfield Units: Tissue Density Classification
- Cardiac Action Potential: Phases 0–4 and Ion Currents
- Cardiac Conduction System: SA Node, AV Node, Bundle of His
- Cardiac Cycle: Systole, Diastole, Stroke Volume, Cardiac Output
- Cell Membrane Potential: Resting and Action Potential
- Coagulation: INR, PT, aPTT and Anticoagulation Monitoring
- ECG Lead System: Einthoven Limb Leads, Chest Leads V1–V6
- ECG Waveform: P Wave, QRS Complex, T Wave, U Wave
- EMG Signal: Motor Unit Action Potential (MUAP), Amplitude
- Galvanic Skin Response (GSR): Sympathetic Nervous Indicator
- Glucose Metabolism: Insulin Resistance, Glycemic Index
- HRV Frequency Domain: LF, HF, LF/HF Ratio
- Heart Rate Variability (HRV): Time-Domain (SDNN, RMSSD)
- Hemodynamics: Ohm's Law Analog (CO = MAP/SVR)
- Intracranial Pressure (ICP): Normal Range, Monitoring
- Intraocular Pressure (IOP): Tonometry Measurement Methods
- Ion Channels: Na⁺, K⁺, Ca²⁺, Cl⁻ and Nernst Equation
- Korotkoff Sounds: Oscillometric BP Measurement Principle
- Lambert-Beer Law: SpO2 Calculation from R Ratio
- MRI Physics: Proton Spin, Larmor Frequency, T1/T2 Relaxation
- Microbiome and Point-of-Care Diagnostics
- Near-Infrared Spectroscopy (NIRS): Tissue Oxygenation
- Neonatal Monitoring Parameters: SpO2, HR, RR, Temp, BG
- Nerve Conduction Velocity (NCV): Normal vs. Pathological
- Organ-on-Chip: Microfluidic Cell Culture and Biosensing
- Pharmacokinetics: Drug Absorption, Distribution, Metabolism, Excretion
- Photoplethysmography (PPG): AC/DC Components, Perfusion Index
- Pulse Oximetry: Oxyhemoglobin vs. Deoxyhemoglobin Absorption
- Pulse Wave Velocity (PWV) and Arterial Stiffness
- Renal Biomarkers: GFR, Creatinine, BUN for Kidney Function
- Respiratory Physiology: Tidal Volume, RR, FRC, FVC, FEV1
- Sleep Stages: PSG (Polysomnography) Sensors and Signals
- X-Ray Interaction: Photoelectric Effect, Compton Scattering
Junior Engineer· 40
- AED (Automated External Defibrillator): Capacitor Charge/Discharge
- Accelerometer for Fall Detection and Activity Classification
- Bioimpedance Spectroscopy (BIS): Frequency Sweep 1 kHz–1 MHz
- Body Area Network (BAN): IEEE 802.15.6 Physical Layer
- Body Temperature Measurement: Core vs. Wrist vs. Tympanic
- Cochlear Implant Signal Processing: Filterbank, Channel, Pulse
- Continuous Glucose Monitor (CGM): Calibration and Factory Cal
- ECG AFE ICs: ADS1291/1292, MAX30003, AD8232
- ECG Analog Front-End: Right Leg Drive (RLD) Circuit Design
- EEG Amplifier: Input Impedance >10 GΩ, Noise <1 µV rms
- EMG Amplifier: Bandwidth 20 Hz–2 kHz, 60 dB CMRR
- Electrocorticography (ECoG) Array: Electrode Pitch, Biocompatibility
- Electrode Contact Impedance: Frequency-Dependent Model
- Electrode-Skin Interface: Ag/AgCl, Dry, Textile Electrodes
- Electrosurgery RF Generator: Cut, Coag, Blend Mode
- Enzyme-Based Glucose Sensor: GOx Reaction and Mediator
- Galvanic Skin Response Circuit: 0.05–1 Hz Bandwidth
- Glucose Amperometric Sensor: Working, Reference, Counter Electrode
- Gyroscope for Tremor Measurement and Posture Monitoring
- High-Voltage Pulse Generator for Therapeutic Devices
- Impedance Cardiography (ICG): Thoracic Impedance for CO
- Inductive Power Transfer for Implants: ISM 6.78 MHz Band
- Instrumentation Amplifier for Biopotentials: CMRR > 100 dB
- Local Field Potential (LFP) Recording: 1–300 Hz Bandwidth
- Low-Power ADC Selection for Medical Wearable: 16-bit, 1 kSPS
- MEMS Microphone for Auscultation: Frequency, Sensitivity
- Motion Artifact Reduction in PPG: Accelerometer-Based Cancel
- NFC-Powered Implant: ISO 15693 Communication
- Neural Recording Amplifier for Implants: < 5 µA, < 5 µV rms
- Optical Coherence Tomography (OCT) Signal Chain
- PPG AFE ICs: MAX30101, MAX86150 (ECG+PPG), AFE4404
- PPG Optical Design: LED Wavelength (660 nm, 940 nm) Selection
- PPG Photodiode: Responsivity, Dark Current, Capacitance
- Photoplethysmography Wearable PCB Layout: Optical Crosstalk
- Pressure Sensor for BP: MEMS Piezoresistive, Capacitive
- TENS (Transcutaneous Electrical Nerve Stimulation) Circuit
- Temperature Sensor: NTC, RTD Pt100, Infrared Thermopile
- Transimpedance Amplifier (TIA) for Photodiode: Noise Optimization
- Ultrasound Pulser and T/R Switch Circuit Design
- Ultrasound Transducer: Piezoelectric Material (PZT), CMUT
Middle Engineer· 80
- 21 CFR Part 820: FDA Quality System Regulation (QSR)
- Alarm System Design: Priority Levels (High, Medium, Low) per IEC 60601-1-8
- Antenna Design for Wearable Medical: MICS Band (402–405 MHz)
- Australia TGA: Conformity Assessment and ARTG Listing
- Battery Runtime Analysis: Current Profile × Capacity
- Battery Selection for Medical Wearables: Primary vs. Secondary
- Biocompatibility: ISO 10993-1 Risk-Based Evaluation Framework
- CE Marking Routes: Self-Declaration vs. Notified Body
- China NMPA: Medical Device Registration (Class I/II/III)
- Cleanroom Design: ISO Class 7 (10,000) and Class 8 (100,000)
- Combination Product Regulatory Strategy (FDA 21 CFR Part 3)
- Design Freeze and Design Freeze Change Control Process
- Design History File (DHF): Complete Development Record
- Design Input Requirements: Clinical, Regulatory, Performance
- Design Output: Drawings, Software, Labeling, Manufacturing Specs
- Design Transfer to Manufacturing: Process Validation
- Device Master Record (DMR): Manufacturing and Test Documentation
- Display Interface for Patient Monitor: LVDS, eDP
- EN 60601-1: General Requirements for Safety and Performance
- EU IVDR 2017/746: In-Vitro Diagnostics Classification
- EU MDR 2017/745: Technical Documentation Requirements
- EU MDR Annex XIV: Clinical Evaluation Procedure
- EU MDR Annex XV: Clinical Investigations in EU
- EU MDR Article 61: Clinical Evidence for CE Marking
- EU MDR EUDAMED Registration and UDI Assignment
- Enclosure Design: IP Rating, Drop Test, Biocompatibility
- FDA 510(k) Premarket Notification: Process and Predicate
- FDA 510(k) Substantial Equivalence Decision Tree
- FDA Breakthrough Device Designation: Expedited Review Path
- FDA De Novo Classification: Novel Low-to-Moderate Risk
- FDA Pre-Submission (Q-Sub) Meeting: Strategy and Use
- FDA Premarket Approval (PMA): Class III High-Risk Device
- FDA SaMD Guidance: Software as a Medical Device Framework
- Flex PCB for Wearable Medical: Bend Radius, Trace Reliability
- Hermetic Seal: Laser Weld, Glass Frit, Ceramic Feedthrough
- IEC 60601-1-11: Home Healthcare Environment Requirements
- IEC 60601-1-2: EMC for Medical Electrical Equipment (4th Ed.)
- IEC 60601-1-6: Usability Engineering (references IEC 62366)
- IEC 60601-1-8: Alarm Systems in Medical Electrical Equipment
- IEC 62304: Medical Device Software Lifecycle Processes
- IEC 62366-1: Application of Usability Engineering to Medical
- IEC 80001-1: Risk Management for IT Networks with Medical Devices
- IEC 82304-1: Health Software — General Requirements for Safety
- IMDRF Cybersecurity Guidance: Device Security Framework
- ISO 10993-10: Sensitization and Intracutaneous Reactivity
- ISO 10993-18: Chemical Characterization of Materials
- ISO 10993-5: In-Vitro Cytotoxicity Test
- ISO 11135: Validation of EO Sterilization Process
- ISO 11137: Radiation Sterilization Dose Setting
- ISO 13485 Clause 7.3: Design and Development Controls
- ISO 13485: Medical Device Quality Management System
- ISO 14971 Integration with Design Control (see Risk column)
- Implant Housing: Titanium, PEEK, Biocompatible Epoxy
- Infusion Pump Mechanism: Peristaltic, Syringe, Volumetric
- Japan PMDA: Shonin and Ninsho Approval Pathways
- MDSAP: Multi-Market Audit (FDA + Health Canada + TGA + ANVISA + PMDA)
- MedRadio Band: 2360–2400 MHz for Body-Area Network
- Medical Adhesive: Pressure-Sensitive, Hydrogel, Acrylate
- Medical Device Classification: FDA Class I, II, III
- Medical-Grade Material Selection: Polymer, Metal, Adhesive
- Notified Body Audit: ISO 13485 and EU MDR Technical File
- PCB Design for Medical: Creepage and Clearance per IEC 60601-1
- Phase Gate Review: Concept, Feasibility, Design, Validation
- Post-Market Clinical Follow-Up (PMCF) Protocol Design
- Post-Market Surveillance (PMS) Plan Requirements
- Product Requirement Document (PRD): User Needs to HW Specs
- Recall and Field Safety Corrective Action (FSCA) Process
- Reliability Analysis: FMEA, FTA, Reliability Block Diagram
- Risk Classification Criteria: Intended Use, Duration, Body Contact
- Single-Use vs. Reusable Device Design Considerations
- South Korea MFDS: Medical Device Registration Process
- Sterility Assurance Level (SAL): 10⁻⁶ for Sterile Devices
- Sterilization: EO Gas, Gamma, E-Beam, Steam (Autoclave)
- Surgical Robot Mechanism: Haptic Feedback, Force Sensing
- UDI (Unique Device Identification): GUDID Submission Process
- USB Type-C Charging for Class II Medical Device
- User Interface Design: HMI Hardware (Touchscreen, Buttons)
- Ventilator Circuit Design: Flow Sensor, Pressure Control
- Vigilance Reporting: MDR to Competent Authority
- Wireless Communication in Medical: BLE, Wi-Fi, Zigbee
Senior Engineer· 80
- Accelerated Aging: ASTM F1980 Real-Time Equivalent Calculation
- Acoustic Noise Limits for Patient Environment
- Bench Testing Protocol Design for Medical Devices
- Bioburden Testing: ISO 11737-1 Enumeration Methods
- Biocompatibility Risk: ISO 10993 Endpoint Assessment
- Bland-Altman Plot for Method Comparison Studies
- Blood Pressure Accuracy: ISO 81060-2 Clinical Validation
- CAPA (Corrective and Preventive Action): 8D Report
- Clinical Data Analysis: Sensitivity, Specificity, PPV, NPV
- Clinical Investigation Plan (CIP): Objectives, Endpoints, Design
- Clinical Safety Data: Adverse Event Rate as Risk Input
- Clinical Study Report (CSR): ICH E3 Structure
- Cognitive Walkthrough: Expert Review of User Interface
- Complaint Handling and Trend Analysis for Risk Monitoring
- Creepage and Clearance: Function of Working Voltage and Pollution Degree
- Drop Test: IEC 60068-2-27 Shock and ISTA Packaging Protocol
- ECG Performance Test: Frequency Response, CMRR, Noise (AAMI EC11)
- ECG Simulator: Fluke ProSim 4, Metron PC-ECG Waveform Source
- EMI Immunity Levels for Medical: EN 55011 Group 1 Class B
- ESD Immunity: IEC 60601-1-2 Basic/Enhanced Performance
- EUDAMED Clinical Investigation Registration (EU MDR)
- Earth Leakage Current: < 5 mA (IEC 60601-1)
- Electrical Protective Means: Double Insulation, Reinforced Insulation
- Electrical Safety Test: Patient Leakage, Earth Continuity, Hi-Pot
- Electromagnetic Compatibility Test: IEC 60601-1-2 Test Plan
- Enclosure Leakage Current: < 500 µA (IEC 60601-1 Table 3)
- Environmental Stress: Temperature, Humidity, Altitude (IEC 60068)
- Environmental Test: IEC 60068-2 Temperature, Humidity, Vibration
- Equivalence and Non-Inferiority Study Design
- Ethics Committee (EC) / IRB Submission and Approval
- Event Tree Analysis (ETA): Bottom-Up Consequence Modeling
- FDA IDE (Investigational Device Exemption) Application
- FMEA for Medical Devices: Design FMEA and Process FMEA
- FMEDA: Failure Modes Effects and Diagnostic Analysis
- Fault Tree Analysis (FTA): Top-Down Deductive Analysis
- Gage R&R (Measurement System Analysis): Repeatability, Reproducibility
- Good Clinical Practice (GCP) ICH E6 Guidelines
- Hazard Identification Methods: Brainstorming, FMEA, FTA, HAZOP
- Hazardous Situation and Sequence of Events Analysis
- Health Technology Assessment (HTA): QALY, Cost-Effectiveness
- Hi-Pot (Dielectric Withstand) Test: 1500 VRMS for 1 Minute
- Human Factors / Usability Risk: Use Error Contribution
- IEC 60601-1 Type B, BF, CF Applied Part Classification
- IEC 62133-2: Secondary Battery Safety for Portable Devices
- IEC 62366-1 Annex A: Application of Summative Evaluation
- IP Rating Test: IEC 60529 IP67, IP68 Ingress Protection
- ISO 14971:2019 Scope and Definitions
- Informed Consent Process: ICF Design and IRB Approval
- Isolation Barriers: Creepage, Clearance, Dielectric Strength
- Measurement Uncertainty: GUM (Guide to Uncertainty in Measurement)
- Mechanical Safety: Drop, Vibration, Crush, Tip-Over Test
- Non-Conformance Product Control: Quarantine, Disposition
- PMCF Evaluation Report and Periodic Safety Update Report (PSUR)
- Patient Leakage Current Limits: B < 100 µA, BF < 100 µA, CF < 10 µA
- Post-Market Clinical Follow-Up (PMCF) Study Design
- Post-Market Risk Update: PMS Data Integration in RMF
- Primary Endpoint Definition: Clinical Performance Criterion
- Protective Earth (PE): Green/Yellow Wire, Continuity < 0.1 Ω
- Randomized Controlled Trial (RCT) Design Considerations
- Real-World Evidence (RWE): Data Sources and Study Design
- Receiver Operating Characteristic (ROC) Curve Analysis
- Registry-Based Post-Market Study Protocol
- Residual Risk Evaluation: Per Hazard and Overall Benefit-Risk
- Risk Control Measure Verification: Confirm Effectiveness
- Risk Control Option Analysis: Inherent Safety, Protective, Info
- Risk Estimation: Severity × Probability Risk Matrix
- Risk Evaluation: Acceptable, ALARP, Unacceptable Regions
- Risk Management File Review Before Production Release
- Risk Management Plan (RMP): Scope, Activities, Responsibilities
- Risk-Benefit Analysis for Residual Risk Acceptance
- SOUP (Software of Unknown Provenance): Risk Control Plan
- Sample Size Calculation: Statistical Power (1-β) and α
- Shelf Life Validation: Packaging Integrity and Performance
- Software Hazard Analysis: Software FMEA and Use Case Analysis
- SpO2 Performance: Accuracy Study vs. CO-Oximetry Reference
- Sterility Test: USP <71> Sterility Test and SAL Validation
- Temperature Accuracy: ASTM E1112, IEC 80601-2-56
- Usability Formative Testing: Iterative Design and Feedback
- Usability Summative Evaluation: Representative Users, Use Scenarios
- Use Error Analysis: Reasonably Foreseeable Misuse
Staff Engineer· 40
- 12-Lead ECG AI: Arrhythmia Classification (AliveCor, DeepMind)
- AI Bias: Demographic Subgroup Performance Evaluation
- AI Model Drift Monitoring in Clinical Production
- AI Model Transparency: Model Card and Intended Use Statement
- AI-Driven Drug Discovery Interface: Target Prediction
- Atrial Fibrillation Detection: CNN on Single-Lead PPG
- Chest X-Ray AI: Pneumonia, Effusion Detection (CheXNet)
- Clinical Decision Support (CDS): FDA Guidance and Exemptions
- Continual Learning for Deployed Medical AI Models
- Continuous Glucose Monitor AI: Predictive Low Glucose Alert
- DICOM Standard: SOP Classes, WADO-RS for Imaging
- Data Anonymization and De-Identification: Safe Harbor, Expert
- Differential Privacy Application in Medical Data Analysis
- Digital Therapeutics (DTx): FDA Breakthrough Designation
- EHR Integration: Epic SMART on FHIR App Framework
- EU MDR and AI Act: Classification for High-Risk Medical AI
- Explainable AI (XAI) in Medical: Grad-CAM, SHAP, LIME
- FDA AI/ML-Based SaMD Action Plan (2021) Key Points
- Fairness Metrics for Medical AI: Equal Opportunity, Equalized Odds
- Federated Learning for Medical AI: Privacy-Preserving Training
- Foundation Models for Medical AI: Med-PaLM 2, BioGPT
- GDPR Article 9: Special Category Health Data Processing
- HIPAA: Protected Health Information (PHI) Technical Safeguards
- HL7 FHIR R4 API: Resource Types (Patient, Observation, Device)
- IEC 62304 for AI Software: Class C Lifecycle Requirements
- IHE Profiles: XDS, PIX, PDQ for Health Information Exchange
- IoT Medical Security: Encryption, Secure Boot, OTA Integrity
- MRI Brain Segmentation: nnU-Net for Gray/White Matter
- Medical Device Interoperability: IEEE 11073, IHE PCD
- Multimodal AI: Imaging + EHR + Genomics for Precision Medicine
- Pathology AI: Whole Slide Image for Cancer Grading
- Predetermined Change Control Plan (PCCP): AI Model Updates
- Regulatory Science for AI: FDA CDRH Innovation Pathway
- Remote Patient Monitoring (RPM) Platform Architecture
- Retinal Image AI: Diabetic Retinopathy Grading (IDx-DR)
- Sepsis Early Warning Score: AI on EHR Vital Signs
- Software as a Medical Device (SaMD): FDA Functional Categories
- Telehealth Integration: Video Consultation, Store-and-Forward
- Wearable Medical Device Cybersecurity: FDA 2023 Guidance
- mHealth App Classification: FDA Mobile Medical Applications
Distinguished Engineer· 40
- BCI (Brain-Computer Interface): P300, SSVEP, Motor Imagery
- CRISPR Diagnostic Interface: SHERLOCK, DETECTR Electronics
- CT-Compatible Device: Metal Artifact Minimization Design
- Cardiac Resynchronization Therapy (CRT) Biventricular Pacing
- Ceramic Feedthrough: Al₂O₃, Platinum Conductor, Biocompatible
- Closed-Loop DBS: Neural Biomarker-Driven Adaptive Stimulation
- Cochlear Implant: 22-Channel Electrode, Sound Processor Design
- Deep Brain Stimulation (DBS): Pulse Width, Amplitude, Frequency
- Digital Pathology: Whole Slide Scanner Hardware and Algorithm
- ECoG-Based BCI: High-Frequency Gamma Band Decoding
- Exoskeleton Control: EMG-Triggered, Impedance Control
- Hermetic Packaging: Titanium Laser Weld, Glass Frit Feedthrough
- High-Density Neural Recording: 1024+ Channel Multiplexed ASIC
- ICD (Implantable Cardioverter-Defibrillator): HV Capacitor, Shock
- Implantable CGM: Factory Calibration, 14-Day Wear Life
- Implantable Device Power Constraints: µW to mW Budget
- Inductive Power Transfer for Implants: Coil Design, SAR Limit
- Left Ventricular Assist Device (LVAD): Motor Drive and Controller
- MRI-Compatible Implants: RF Heating, MRI Conditional Design
- Microfluidic Lab-on-Chip: PCR, Electrophoresis, ELISA Integration
- Microneedle Array: Hollow, Solid, Dissolvable Drug Delivery
- Neural Probe: Silicon Shanks, PEDOT Coating, Impedance Spec
- Neuropixels Probe: 384 Sites, 30 kHz Sampling, 10 µm Pitch
- Next-Gen Implant: Biodegradable Electronics and Transient Devices
- Non-Invasive BCI: EEG SSVEP Speller, 40–90 Hz Flicker
- Optogenetics: Light-Activated Neuron Stimulation Circuit
- Organ-on-Chip Interrogation Electronics: Impedance Spectroscopy
- Pacemaker: Sensing, Pacing, Telemetry Circuit Architecture
- Photoacoustic Imaging: Pulsed Laser Source, US Transducer
- Primary Battery for Implants: Li/SOCl₂, Li/I₂, Li/MnO₂
- Quantum Dot Biosensor: Fluorescence-Based Molecular Detection
- Quantum Sensing for Medical: NV-Center Diamond Magnetometry
- Rechargeable Implant Battery: Li-Ion, Li-PPS, SiC MOSFET Charger
- Retinal Prosthesis (Bionic Eye): Sub-Retinal vs. Epi-Retinal
- Single-Cell Sequencing Electronics: Droplet Microfluidics
- Smart Drug Delivery: MEMS Valve, Electroosmotic Pump
- Soft Robotics Actuator for Rehabilitation: Pneumatic, SMA
- Spinal Cord Stimulation (SCS): Epidural Lead Placement
- Synthetic Biology Sensor: Cell-Based Biodetection Interface
- Wireless Power: ISM 6.78 MHz, MICS 402–405 MHz, Medical 2.4 GHz