Biomedical Engineers TV - Anesthesia Machines

Introduction

Continuous Flow Machines: Concept popularized by Boyle's anesthetic machine in 1917.
- Invented by Henry Boyle, UK.
- Similar machines existed in France and the UK.
Development: Early anesthesiologists carried equipment; advancements led to non-portability.
Boyle's Machine: Modern machines sometimes referred to as such.
Innovations in the US: Contributions by Richard von Forager and the Forager Company.

Gas Connections:
- Piped oxygen, medical air, nitrous oxide from wall supply or reserve cylinders.
- Pin index safety system yoke with a bodox seal.
Safety and Monitoring:
- Pressure gauges, regulators, pop-off valves.
- Flow meters (rotameters).
- Vaporizers for dosage control.
- High-flow oxygen flush.
- Gas monitoring systems.
- Patient monitoring options: heart rate, ECG, blood pressure, oxygen saturation, etc.
Breathing Systems:
- Manual reservoir bag, adjustable pressure-limiting valve.
- Integrated mechanical ventilator.
Distinction:
- Different from anesthesia carts (which hold adjuncts).
- Dentistry use: Relative analgesia machines.

Portable Anesthesia Machines:
- Lightweight, portable, versatile, and easy to operate.
- Used in veterinary hospitals.
Conventional Anesthesia Machines:
- Fixed in operation theaters, cath labs, induction rooms.
- Movable within hospital settings.
Pendant Mount Anesthesia Machines:
- Used in space-compromised areas.
- Mounted on pendant, easy floor cleaning.
MRI Compatible Anesthesia Machines:
- Safe for use in MR rooms.
- Withstands up to 1,000 gauss, 3.0 Tesla approved.
- Tested with MRI scanners, doesn't affect diagnostic images.