4
Equinox® Relieve - User Manual
1. Introduction
1.1. Indications for Use
The O-Two Equinox® Relieve N
2
O/O
2
Analgesic Gas Mixing and
Delivery System is intended for delivering a 50/50% mixture
of nitrous oxide and oxygen, on demand, to a conscious,
spontaneously breathing patient.
The device is suitable for use in:
• Pre-hospital (ambulance) use, and
• In-hospital use (ER, Labor and Delivery etc.)
1.2. Contraindications
The contraindications for this device include, but may not be
limited to:
• Hypersensitivity to the medication
• Head injuries with impaired consciousness
• Maxillofacial injuries
• Artifi cial, traumatic or spontaneous pneumothorax
• Air embolism
• Middle ear occlusion, ear infection
• Decompression sickness
• Abdominal distension / intestinal obstruction
Note:
Nitrous Oxide/Oxygen (N
2
O/O
2
) mixtures must never
be used in any condition where air is trapped in the body and
expansion (up to 3x original size) would be dangerous. For
example, it will exacerbate pneumothorax and increase pressure
from any intracranial air. Air in any other cavities such as the
sinuses, middle ear and gut may also expand.