Institute of Critical Care Medicine

Weil Institute of Critical Care Medicine

Sunlife Science Inc.

Carlos Castillo

Max Harry Weil

Joe Bisera

Wanchun Tang

Clayton Young

A chest compressor includes a piston () that moves in downward and upward strokes within a cylinder (), with the piston undergoing a smooth reversal at the bottom of the downward stroke. A compression spring, such as a wave spring (), is positioned to engage the piston only near the end of its downward stroke, to smoothly reverse the piston motion, limit downward force on the patient at the end of the stroke, and avoid a downward pulse due to the momentum of the downwardly-moving piston. A stop () is latchable in an inward position to allow reduction in the piston stroke by engaging an outward flange () on the piston before the piston has moved fully downward. In one embodiment the piston () is made as an outer piston part () and an inner piston part () that telescope in one another in which the outer piston part is slidably engaged with and guided by the cylinder along a path and the inner piston part is slidably engaged with and guided by the outer piston part and the spring () engages the inner piston part near the end of its downward stroke, to smoothly reverse the piston motion, limit downward force on the patient at the end of the stroke, and avoid a downward pulse due to the momentum of the downwardly-moving piston.

Enhanced chest compressor

A chest compressor includes a piston () that moves in downward and upward strokes, with the piston undergoing a smooth reversal at the bottom of the downward stroke. A compression spring such as a wave spring (), is positioned to engage the piston only near the end of its downward stroke, to smoothly reverse the piston motion, limit downward force on the patient at the end of the stroke, and avoid a downward pulse due to the momentum of the downwardly-moving piston. A stop () is latchable in an inward position to allow reduction in the piston stroke by engaging an outward flange () on the piston before the piston has moved fully downward.

An automatic chest compressor () for repeatedly compressing the chest of a patient, is constructed to have a small thickness (H) and light weight so it can be readily carried by an emergency worker. The chest compressor includes a piston support () at the top, a pressing part () at the bottom that presses towards the chest of the patient, and piston side walls () that repeatedly elongate to depress the pressing part. The piston side wall are flexible material that is repeatedly curled and uncurled as the side walls move the pressing part respectively up and down.

Low profile chest compressor

Devices for treating a patient by measuring a condition, such as the partial pressure of CO, at a location on a mucosal membrane surface in the mouth region of the patient, includes a sensor () with an end () that lies against the mucosal surface, and a seal () that extends 360&#xb0; around the sensor end and presses against the mucosal surface. The sensor end and the seal lie on the first end portion () of a holder () which has a second end portion () that presses against the outside of the patient at a location opposite the sensor and seal. The holder is a clasp which can be formed as a single piece of resilient material that extends in a loop, or which can be formed in the manner of a clothespin with a spring that pivots two bars to urge their end portions towards each other.

Growing community of inventors

Cathedral City, CA, United States of America

Carlos Castillo