Medical Device Notes

MedTech in Ireland

  • Ireland is a major exporter of medical devices in the EU and globally.
  • The Irish Medical Device Association (IMDA) represents the medical technology industry in Ireland.
  • There are over 300 medtech companies in Ireland, employing around 25,000 people.
  • Annual value of Irish medtech exports is significant.

Medical Device Definition

  • A medical device includes any product (excluding medicines) used in healthcare for diagnosis, prevention, monitoring, or treatment of illness or disability.
  • EU Definition:
    • Includes instruments, apparatus, software, implants, reagents, etc., intended for medical purposes like diagnosis, treatment, or modification of anatomy.
    • Does not achieve its primary action through pharmacological, immunological, or metabolic means.
    • Includes devices for conception control and products for cleaning/sterilization of devices.
  • US Definition:
    • Similar to the EU definition, covering instruments, apparatus, implants, reagents, etc.
    • Intended for use in diagnosing, treating, or preventing disease, or affecting the body's structure/function.
    • Does not achieve its primary purpose through chemical action or metabolism.

In-Vitro Diagnostics

  • EU Definition:
    • Includes reagents, kits, instruments, software, or systems used in vitro for examining specimens from the human body.
    • Provides information on physiological/pathological states, congenital impairments, predisposition to diseases, safety/compatibility with recipients, treatment response, or therapeutic measures.
  • US Definition:
    • Reagents, instruments, and systems for diagnosing diseases or determining health states.
    • Used for collecting, preparing, and examining specimens from the human body.

Examples of Medical Devices

  • Implants, dressings, patient monitoring equipment, X-ray systems, wheelchairs, hearing aids, and blood glucose measurement devices.

Software as a Medical Device (SaMD)

  • Software with a medical purpose that is not incorporated into another medical device.
  • Examples include mental health apps, medical imaging software, stand-alone software for segmentation and 3D printing, heart rate measurements and cloud-based ECG interpretation.
  • Decision-making process:
    • If the software program performs an action on data for the benefit of an individual patient, it may be considered a medical device.

EU Regulatory Framework

  • Medical Devices Regulation (MDR EU) 2017/745
  • In Vitro Diagnostic Medical Devices Regulation (EU) 2017/746
  • These regulations govern the clinical investigation, production, and distribution of medical devices in Europe.

Medical Device Regulation (MDR) 2017/745 Key Improvements:

  • Improved performance of notified bodies.
  • Clearer requirements for clinical data.
  • More specific product requirements (including Unique Device Identifier - UDI).
  • Improved pre-market assessment of high-risk devices.
  • Enhanced market surveillance.
  • Improved governance, coordination, and cooperation through EUDAMED (European Database on Medical Devices).

Classifications (EU)

  • Devices are grouped into four classes based on risk:
    • Class I: Low risk.
    • Class IIa: Medium risk (short-term use).
    • Class IIb: Medium risk (long-term use).
    • Class III: High risk.

Device Classification (EU) Examples

  • Class Is (sterile): sterile gauze, personal protection kits, stethoscopes, examination gloves, colostomy bags, or oxygen masks
  • Class Im (measuring): thermometers, droppers, and non-evasive blood pressure measuring devices
  • Class Ir (reusable): surgical instruments, endoscope
  • Class I (non-sterile, nonmeasuring, or non-reusable surgical instrument): bandages, compression hosiery, walking aids, wheelchair, hospital beds
  • Class IIa devices: hearing-aids, blood transfusion tubes, and catheters
  • Class IIb Devices: ventilators and intensive care monitoring equipment
  • Class III Devices: balloon catheters, prosthetic heart valves, pacemakers, etc.

US Device Classification

  • Class I: Low risk, general controls.
  • Class II: Moderate/controlled risk, may require 510(k) clearance (substantially equivalent to a predicate device).
  • Class III: High risk, requires PMA (premarket approval) with reasonable assurance of safety and efficacy.

Medical Device Market

  • The European and U.S. medical device markets are substantial, with significant annual values.
  • Figures for 2018-2025 (projected) show the market size in USD billion for various countries and the U.S.

FDA Medical Device Recalls

  • Recalls are classified into Class I (high risk), Class II, and Class III.
  • Data from 2009-2021 indicates the number of recalls for each class.

Medical Device Reporting

  • Manufacturers, importers, and device user facilities (e.g., hospitals) have requirements for reporting adverse events related to medical devices to the FDA.