Medical Equipment Expert Witnesses

Christopher M. Daft, PhD, is an award winning, Oxford Educated Materials Scientist whose areas of expertise include medical imaging, electronics, semiconductors, medical devices, sensors, MEMS, signal processing, and image processing.

A serial inventor who holds 22 United States Patents with several pending, Dr. Daft has diverse industry experience including multi-nationals such as GE, Medtronic, Fujifilm, Samsung, and Siemens as well as several start-ups. He is a well-published winner of grants from the National Institute of Health.

Dr. Daft has been an Institute of Electrical and Electronic Engineers (IEEE ) Senior Member since 2004. He has three years of experience teaching electrical and computer engineering at the University of Illinois. Dr. Daft holds a BA and MA in Physics from Oxford University as well as Doctorate from Oxford in Materials Science.

Litigation Support - Dr. Daft provides litigation support in the areas of Intellectual Property and Medical Devices including Imaging, particularly Medical, Patents, Minimally Invasive Surgical Guidance, and more. His experience includes a variety of cases in the areas of wearable electronics, imaging systems, and surgical technology. Dr. Daft has extensive deposition and trial testimony experience.

Areas of Expertise:

Design Engineering Electrical Engineering Electromagnetic Engineering Microelectronics Medical Imaging Electronics Semiconductors

Medical Devices Sensors Software Engineering MEMS Signal Processing Image Processing Physics

View Dr. Christopher Daft's Consulting Profile.

Georgia J. Persky RN, MBA, PhD, CLNC, CNOR is a Columbia University trained nurse researcher with over 40 years of broad Clinical Nursing experience and 25 years of senior leadership in Hospitals, Nursing Homes and Home Health organizations. She also has 20 years of Surgical Nursing and Operating Room experience. Dr. Persky has expertise in the micro issues in nursing for adult patient care and the broad management, quality, and regulatory issues in hospitals. 

Background Experience - Dr. Persky served as Vice-President of Nursing and Patient Care Services for the past 25 years and most recently at New York Presbyterian Hospital/Columbia University Medical Center. For nine years, she was responsible for Patient Care Services, Risk and Quality Management and Patient Satisfaction for a 750-bed academic hospital. She directed a $200 million budget with 33 patient care units and Care Management, Respiratory Therapy, Social Work and Admitting Departments with 9 direct reports and 2,000 patient care employees.

Litigation Support - As a Certified Legal Nurse Consultant and Quality Reviewer, Dr. Persky has investigated hundreds of Malpractice and Injury cases as a quality reviewer and can assist in legal case review with chronologies, timelines, and evidence-based reports. She has testifying experience in malpractice and personal injury cases, as well as, with human resource and employee discrimination with an ability to attest to standards of care in clinical litigation. Dr. Persky's services are available to attorneys for the plaintiff and defense seeking an expert in nursing and patient care with a strong understanding of how heath care organizations work.

Areas of Expertise:

Nursing/Hospital Standards of Care Nursing Home and Skilled Nursing Surgical and Perioperative Nursing Quality and Risk Management Fall and Pressure Ulcer Prevention

Hospital Policy and Procedure Medication Safety Medical Device Safety Hospital Administration State, Federal, Joint Commission Regulatory Compliance

View Dr. Persky's Consulting Profile.

Medical Devices, Biotech, Failure Analysis, Mechanical Eng, Materials, Reliability, Expert Witness

T. Kim Parnell, PhD, PE is a Professional Mechanical Engineering consultant and is Principal & Founder of Parnell Engineering & Consulting (PEC). Dr. Parnell holds PhD and MSME degrees in Mechanical Engineering from Stanford University, a BES from Georgia Tech, and is a registered Professional Mechanical Engineer (PE) in the State of California.  He is an ASME Fellow, an IEEE Senior Member, and a Member of ASM and SAE.  Dr. Parnell is Past-Chair of the IEEE Santa Clara Valley Section (IEEE-SCV) (over 12,000 members) and Past-Chair/Board Member of the IEEE Consultants' Network of Silicon Valley (IEEE-CNSV). Dr.Parnell is an experienced Expert Witness, has provided testimony in both trial and deposition, and has authored numerous expert reports PGR and IPR declarations.  He has worked extensively as an expert in medical devices, patents, product failure, product liability, and personal injury. Dr. Parnell has been retained in medical device litigation cases that are in the news and adjudicated in MDLs.  Products include IVC Filters (Inferior Vena Cava Filters), Pelvic Mesh, Transvaginal Mesh, Intragastric Abdominal Balloon Weight Loss Systems, Back Pain Reduction Systems, and others. Dr. Parnell brings both breadth and depth of experience to clients.  He has over 34 years of professional consulting experience, has taught both graduate and undergraduate University classes (Visiting Professor at Stanford University & Adjunct Professor at Santa Clara University), and has also worked in industry.  His industrial positions include sectors such as software, hardware, medical devices, and telecommunications equipment. He has extensive experience in areas including patents, medical devices, Nitinol shape memory alloy material, mechanical failure of products or equipment, and material failure by fracture or fatigue. Dr.Parnell frequently works with early-stage companies as both a technical consultant and a business advisor in sectors including medical devices and flash memory technology.

Areas of Expertise:

Patents and Intellectual Property Medical Devices Medical Instrumentation Composite Materials Finite Element Analysis (FEA) & Simulation Cell Phones, Personal Electronic Devices Gas Leaks, Pipe Failure, Vapor Cloud Explosions

Shape Memory Materials Heavy Truck Crashworthiness Consumer Products Product Design Refinement Piping, Pressure Vessels Failure Analysis Reliability

Selected Professional Memberships:

• Registered Professional Engineer (Mechanical), California
• ASME (American Society of Mechanical Engineers), Fellow
• SAE (Society of Automotive Engineers), Member
• IEEE (Institute of Electrical & Electronics Engineers), Senior Member
• ASM International, Member
• SMST (Shape Memory and Superelastic Technologies), Member

View Dr. Parnell's Consulting Profile.

Mari S. Truman, PE, has more than 37 years of experience in Orthopedic Product Design and Development. As Principal Engineer with her company, Orthobiomech, LLC, she acts as an R&D design and development consultant to the orthopaedic industry and an injury biomechanics and medical device forensic expert.

Ms. Truman's design experience includes implants and instrumentation systems used to repair fractured bones, torn ligaments and/or to reconstruct spine, knee, wrist, hip, ankle, elbow, thumb based cmc, and other finger and toe joints for many of the USA based orthopaedic conglomerates and a few Asian, Australian and European firms.

Having designed and developed implants and instruments used for both human joint reconstruction and skeletal trauma repair, Ms. Truman is named on 12 Orthopaedic Patents and frequently gives talks on implant design and injury biomechanics on topics such as: knee and thumb-based joint surfaces and kinematics, joint design, rapid prototyping, medical device design control, and injury biomechanics.

Litigation Support - Ms. Truman has been providing Forensic Impact and Injury Biomechanics and Orthopedic Biomechanics to the legal industry for over 15 years. She draws on her strong knowledge of FDA and ISO EN13485 compliant design control processes, failure modes and effects analysis, clinically relevant tissue loading, and design safety assurance, including device performance requirements and warnings, during her medical device litigation reviews. Ms. Truman has a strong knowledge of the production and quality assurance processes used in the manufacture, cleaning, and sterilization of medical devices and the effects of such processes on product performance.

Analysis of Traumatic Injuries Related To:

Falls and Fall Recovery Vehicular Collisions Assaults and Fights Projectile Impacts Occupation or Workplace

Failed Medical Implants Assistive Devices Orthotics Consumer Products Sports and Recreation, Occupational Overuse / Injury

View OrthoBioMech LLC's Consulting Profile.

John Lawrence Stevens, RAC, has over 20 years of FDA Regulatory Compliance experience encompassing virtually all FDA field positions. He also has 18 years of industry experience as a mid-level manager and senior executive in clinical, regulatory, and quality in the Medical Device Industry, including several large and small cardiovascular companies.

Mr. Stevens has personally designed quality systems, prepared regulatory submissions (510(k), IDE and PMA) and managed 7 multi-center clinical trials for class 3 medical devices. From 1989-1993, he was the Industry Representative on the FDA Circulatory Systems panel which reviewed over 30 PMA clinical studies for cardiovascular devices. He regularly perform webinars regarding FDA and issues regarding Clinical Studies and Medical Devices. 

Litigation Support - An FDA expert and seasoned business professional, Mr. Stevens is uniquely qualified to opine on cases involving the FDA's regulation of medical devices. He has served as an expert witness for over 10 court cases involving the FDA regulation of medical device firms. His services include thorough reporting, depositions, and trial testimony. 

Areas of Expertise:

• Submissions (510(k), IDE, PMA, De Novo)
• Medical Device Quality Systems
• FDA Inspections

View Mr. Stevens' Consulting Profile.

mdi Consultants, Inc - Experts in FDA regulatory affairs, quality assurance and ISO 9000 certification. With 6 years in the FDA and 26 years consulting to the industry, mdi Consultants, Inc. has been an invited Speaker worldwide on FDA regulations and policies and has obtained FDA expert status as third party auditors.

OUR APPROACH

We utilize the following three part approach to providing high quality services to our clients:

Unsurpassed consultant experience – we identify and recruit only top quality consultants with deep industry knowledge to provide the most complete and insightful advice to our clients

Up-to-date systems and processes – we have highly defined systems (e.g. manuals, training programs, technical files) and processes (e.g. audit methodologies, 510(k) submission, validations) that are constantly refined and kept current across the ever changing regulatory environment

Involvement in regulation development – we stay ahead of policies by participating in the development of regulation (e.g. HACCP, Scientific Advisor to U.S. Congressmen)

Rabbie K. Hanna, MD, specializes in Gynecologic Oncology. Dr. Hanna is certified by the American Board of Obstetrics and Gynecology in both Obstetrics and Gynecology and Gynecologic Oncology. He has special expertise in Robotic-assisted Surgery.

Licensed to practice in Michigan, Dr. Hanna is a Member of the Society of Gynecologic Oncology, American Society of Clinical Oncology (ASCO) and the American College of Obstetrics and Gynecology (ACOG), among others. He is currently a Clinical Assistant Professor in Obstetrics and Gynecology at Wayne State University, Detroit, MI.

Dr. Hanna is an attending physician of Gynecologic Oncology at the Henry Ford Health System in Detroit, Michigan, in addition to Genesys Health System in Grand Blanc, MI and Hurley Medical Center in Flint, MI.

Areas of Specialization:

Gynecologic Cancer Minimally Invasive Surgery Robotic Surgery Gynecologic Surgery Endometrial Cancer Ovarian Cancer Fallopian Tube Cancer Primary Peritoneal Cancer

Cervical Cancer Vulvar Cancer Vaginal Cancer Laparoscopically Assisted Vaginal Hysterectomy Robotic Hysterectomy Endometrial Biopsy Leiomyoma Ovarian Cancer

Author - Dr. Hanna has published numerous book chapters, peer-reviewed articles, and abstracts on topics within his expertise.

Speaker - Dr. Hanna has delivered Gynecologic Oncology seminars and presentations around the nation to such entities as the Society of Gynecologic Oncology and others.

Honors and Awards - Throughout the years, Dr. Hanna has been recognized for his outstanding achievement and ability. Among many include the 2015 nomination for membership into the Gold Humanism Honor Society. In 2012, he was honored with the “Outstanding Teaching Award” presented by the Henry Ford Hospital/Wayne State University Obstetrics and Gynecology Residents and other teaching awards.

Mary B. Gloeckner, RN, MS, APN, is a Medical-Surgical Clinical Nurse Specialist who specializes in Wound Care and Ostomy Nursing. She has been a nursing consultant at Trinity Medical Center in Rock Island, Illinois, a 500 Bed hospital, for over 35 years. Ms. Gloeckner started the Wound & Ostomy Clinic (WOC) program at Trinity when she began there in 1983. She currently sits on 2 National Boards, the WOC Certification Board, and the Friends of Ostomates Worldwide. Ms. Gloeckner was also elected to sit on the International Board(ISTAP) on Skin Tears. She was honored with receiving the 2011 Iowa Affiliate Wound, Ostomy and Continence Nurses Society's (WOCN) Nurse of the Year Award and the 2016 USA WOC Nurse of the Year Award. Ms. Gloeckner provides litigation support service to attorneys for Plaintiff and Defense. Her cases include issues related to Wound Care and Colon and Rectal Surgery. Ms. Gloeckner is available to review medical records for standard of care and causation. Areas of Expertise and Consultation:

Wound Care Decubitus Ulcers Colostomy Ileostomy Urostomy

Pressure Ulcers Venous ulcers Vascular ulcers Fistulas Diabetes

Envista Forensics is a global leader in Forensic Engineering & Recovery Solutions. They provide Cause & Origin, Failure Analysis, Fire and Explosion Investigations, Accident Reconstruction, Damage Evaluations and Equipment Restoration Services following disasters of all kinds. Envista has offered Consulting Services to the insurance, legal and risk management industries, as well as businesses, public entities, and universities for over 25 years. Their Experts travel globally from 30 offices located across the U.S., Canada, Mexico, the U.K., Australia and Singapore.

Envista's experience counts when equipment, systems, structures, or data have been threatened by catastrophe or litigation. Their experts and advisors determine cause and responsibility, and identify the nature and extent of damage or loss and provide a full range of solutions to protect their assets. Envista's technical professionals are trusted advisors and industry leaders. Their expertise is broad and deep, capable of withstanding all forms of scrutiny. Envista's services are available globally so that certainty is assured no matter where in the world it is needed. As the recovery from disasters has grown more complex, Envista has developed a comprehensive array of services to help their clients and has associates located around the globe to provide assurance no matter the type of loss or location of the disaster.

Envista helps attorneys quickly get to meaningful answers on the many technical issues at the center of a dispute. Their engineers have decades of experience working with both defendants and plaintiffs. They offer effective Expert Witness Testimony, with the ability to communicate effectively, build rapport with juries and judges, and maintain adherence to structured, methodical approaches in drawing conclusions are all extremely critical. Envista Forensics understands how critical the selection of an expert can be, and we understand what makes experts effective. Their court qualified experts have extensive experience providing expert testimony on a wide variety of engineering and technical matters.

Areas of Expertise:

Aviation & Aerospace Biomechanics Construction Defects Digital Forensics Electrical Injury & Electrocutions Causation Chemical Computer / Network Equipment Failure Construction Defect Disputes over Reparability of Damage Electrical Failure Equipment Restoration Fire & Explosion Analysis Equipment Restoration

Industrial / Manufacturing Equipment Materials Failure Mechanical Accidents Mechanical Failure Medical / Laboratory Equipment Product Failure / Liability Project Management Structural Failure Subrogation Utility & Energy Valuation of Structures or Equipment Vehicle Accident Investigation Workplace / Premises Accidents

View Envista's Consulting Profile.

Dr. Yadin B. David has over 35 years experience in Managing Medical Technologies from Pre-Purchasing Evaluation phase, to Installation, Training, Servicing and Incidents Investigation. His expertise includes wide variety of medical devices and accessories including infusion pump, laser, electrosurgery unit, monitors, X-ray, defibrillators, implants, monitors, warmers, surgical instruments and catheters. Dr. David is also an expert in Electromagnetic interferences (EMI) medical devices and in Telemedicine and TeleHealth systems. His experience includes review and analysis of patent infringements allegation and validity. Dr. David serves a Consultant for industry and institutions including the Food and Drug Administration (FDA), General Hospital and Personal Use Devices Panels, World health Organization (WHO)and medical devices manufacturers. His services include testing, adverse events investigation, engineering reports, equipment management program review and risk assessment. Dr. David has given many national and international presentations about medical technology management, telemedicine and medical devices regulations.He authored manuscripts, chapters and books.

Peter A. Crosby has over 35 years experience in the Medical Devices Industry. He has been the CEO of six medical device companies (public and private) in four countries, and has been a member of the board (including chairman of the board) of over 10 companies.

Mr. Crosby is an accomplished entrepreneur and company builder, and has brought many medical device products to the world market. In 2017, he retired as CEO from Mainstay Medical, after spending over 8 years as the founding CEO, doing several rounds of financing, taking the company public in Europe, and bringing Mainstay’s ReActiv8 to market in Europe. Although he continues to work with the company on a consulting basis, he has shifted his focus to helping other companies grow, as a board member, advisor, and in interim management.

With a university education in Biomedical Engineering, Mr. Crosby is the inventor on over 30 US patents and applications pending. He has managed the intellectual property portfolio of several companies. His clinical domain experience includes ophthalmology, otolaryngology, cardiology, cardiac surgery, orthopedics, pain management, anesthesia, and intensive care.

Litigation Support - Mr. Crosby has served as an expert witness in many cases including product liability, intellectual property (patent disputes), and commercial contracts disputes. He has testified in three cases in which the outcome hinged on interpretation of “commercially reasonable efforts.” Mr. Crosby's services are available to attorneys representing plaintiff and defendant.

Product Expertise:

Implantable Devices Cochlear Implants Cardiac Pacemakers Implantable Defibrillators Artificial Hearts and LVADs

Neurostimulation Devices In Vitro Diagnostics Medical Device Software Patient Monitoring Imaging / Ultrasound and X-Ray)

View Peter Crosby's Consulting Profile.

Karl R. Leinsing, MSME, PE, President of ATech Designs, Inc., is a Professional Mechanical Engineer who specializes in Medical Device Product Development from concept to production. Mr. Leinsing has been granted over 32 patents (needle free IV valves, laparoscopic devices, needlescopic devices, suture lockers, catheters, mitral valve repair devices, knitting machines) and excels in solving the most complicated problems and design challenges. His company has a fully equipped medical lab with calibrated measurement and test equipment and all is fully documented with high quality reports with pictures and video to provide credible results and easy to understand compelling data. The winner of five design awards, Mr. Leinsing is recognized as one of the top 100 medical device professionals in the nation by MD&DI. For dedication to his industry, he was made the 2014 Chairman of the Medical Device and Manufacturing Conference in Anaheim, CA. Mr. Leinsing has also been acknowledged for his work in a publication by Life Magazine. Mr. Leinsing offers litigation support services to the legal community. He has extensive experience with Patent and Product Liability cases including report writing, depositions, and testimony. Areas of Expertise:

Intravenous (IV) Systems & Disposables Hernia Repair Endometrial Ablation Laparoscopic Instruments Injection Ports Catheters Heart Valve Repair / Replacement Subcutaneous Ports

Bed Rails Cervical Screws Syringes, pen injectors, auto-injectors IV / Insulin Pumps Glucose Monitors Peritoneal Dialysis Pumps Abdominal Aortic Aneurysm (AAA) Repair Sleep Apnea Devices (CPAP)

View Karl Leinsing's Consulting Profile.

John B. Everlove, Paramedic, BA has over 25 years of experience providing Emergency Medical Services. Currently licensed and practicing in California, Mr. Everlove has the following licenses and credentials:

• State of California Paramedic License P03889
• Ventura County Paramedic Certificate of Accreditation
• Advanced Cardiac Life Support Provider
• Pediatric Advanced Life Support Provider
• Basic Life Support Healthcare Instructor
• Basic Life Support Healthcare Provider
• Drug Abuse Recognition Evaluator
• Federal Emergency Management Agency Emergency Response Team Member
• National Association of Emergency Medical Services Association of Education Instructor
• National Incident Management Systems Provider
• Emergency Vehicle Operations Course Instructor

Litigation Support - Mr. Everlove provides dependable and professional litigation and support services for both plaintiffs and defendants. As a Supervisor and Clinical Manager for an organization of 150 employees, he conducted numerous investigations related to all aspects of Pre-Hospital Emergency Care from inception, to final review and root cause analysis. Mr. Everlove has participated in the research, development and implementation of clinical care equipment, policy and procedure design and implementation, as well as clinical educational services for Paramedics and EMTs. Areas of Expertise:

Pre-hospital Standard of Care EMT / Paramedic Standard of Care EMT / Paramedic Misconduct Ambulance Driving & Operations Patient Transportation Patient Care Documentation

Electronic Patient Care Records Medical Legal Consent EMT / Paramedic Training & Education CPR / AED Lifting Opiates / Antidotes

View John Everlove's Consulting Profile.