10/15/2026
EMS equipment spotlight:
Stryker LUCAS 3 Chest Compression System
What is the LUCAS 3 Device?
The Stryker LUCAS 3 is an automated, battery-powered mechanical chest compression system. In a cardiac arrest scenario where CPR is required, this device is designed to deliver high-quality, uninterrupted, and consistent chest compressions, following the latest resuscitation guidelines.
Why Use It? The Primary Purpose
The main purpose of the LUCAS device is to replace a human rescuer in performing chest compressions. This is critical because manual CPR is incredibly strenuous, and even trained professionals experience fatigue, which can lead to a significant drop in compression quality within just a couple of minutes. The LUCAS device ensures that compression depth, rate, and chest recoil remain perfect and continuous for as long as it has power.
How It is Used: Application Steps
The system is designed for rapid deployment, often while other rescuers are performing initial manual CPR and rhythm assessment. The key steps, as illustrated by the diagram on the back plate, are:
Stop Manual CPR: Briefly pause compressions.
Slide the Back Plate: Immediately place the rigid yellow back plate (the "LUCAS" branded side with the human-shaped diagram visible in your photos) underneath the patient at the level of the armpits. This provides the stable surface needed.
Attach the Upper Device: The main unit (the white "Stryker" and "LUCAS 3" branded assembly with the piston) is placed over the patient’s chest, and its side legs (with the large black grips and straps) are securely clicked into the yellow back plate.
Position the Piston: The transparent suction cup is centered over the patient's sternum, right on the compression point depicted in the diagram.
Start Compressions: Once in place, the device is powered on and started, instantly taking over with perfect-depth, consistent-rate compressions.
Key Educational Benefits
Consistency: Eliminates rescuer fatigue and variance in manual CPR, maintaining optimal circulation.
Uninterrupted Therapy: Compressions continue during patient transport (to the ambulance, into the hospital, or on stairs) and during other interventions like shock delivery and line placement.
Rescuer Safety: During transport, rescuers can remain belted rather than performing CPR while moving, enhancing safety.
Improved Workload Management: Frees up the CPR operator to perform other critical tasks, such as airway management, medication administration, and monitoring.
Paramedic Jeff, left side of video
Paramedic Jay, right side of Video
Assistant chief, Paramedic Brian-narration