CPR Training Device with Elastic Chest Piece and Adjustable Stops

The patent creates a simplified copy of the essential functional elements of a real patient (lungs as elastic bags, thorax as deformable structure) rather than attempting to replicate the entire human body. This copying approach maintains safety while capturing the critical breathing and thoracic movement characteristics needed for effective CPR training.

The patent employs adjustable parameters including different lung volumes, varying elastic coefficients of the thorax material, and adjustable deformation limits through stops. These parameter changes allow the dummy to simulate different patient conditions and response characteristics, improving simulation accuracy while maintaining safety.

The patent uses an elastic chest piece made of flexible material that naturally deforms under manual pressure applied during CPR practice. This flexible shell approach provides realistic thoracic movement simulation without requiring complex mechanical actuation systems, motors, or electronic controls, thereby maintaining structural simplicity.

The elastic chest piece automatically returns to its original position after deformation through its inherent elastic properties, eliminating the need for external reset mechanisms or active control systems. This self-service characteristic simplifies the device structure while maintaining realistic simulation of thoracic recoil.

The patent incorporates adjustable height stops that can be positioned at different levels to limit chest piece deformation, allowing the same device to simulate different patient types (adults with greater tolerance, children with lesser tolerance). This dynamic adjustability provides versatility without requiring multiple separate dummies or complex electronic control systems.

The single chest piece structure serves multiple functions by accommodating different stop positions, enabling it to simulate both adult and pediatric patient responses. This universal design eliminates the need for separate specialized dummies for different patient populations, reducing overall device complexity while maintaining adaptability.

The patent uses a simple elastic bag shaped to resemble lungs, which can be manufactured using basic molding or fabrication techniques. This flexible membrane approach achieves realistic breathing simulation through simple inflation and deflation, avoiding complex mechanical pump systems or electronic actuators that would increase manufacturing complexity.

The lung-shaped bag is inflated and deflated using pneumatic pressure, likely through a simple pump or breath-based inflation mechanism. This pneumatic approach provides realistic breathing motion without requiring complex mechanical linkages, motors, or control systems, thereby maintaining ease of manufacture while achieving high simulation realism.