Adjustable resuscitation device and method for using the same

Inventors

Islava, Steve • Cazort, III, John Guy • Van Auken, Richard A.

Assignees

Care 2 Innovations Inc

Abstract

A device and method for adjusting a tidal breath delivered to a patient. The device includes a moving frame which is configured to move over a stationary frame that is nested within the moving frame itself. Disposed between the moving frame and the stationary frame is a compressible bellows which delivers a tidal breath to the patient each time the moving frame is passed over the stationary frame. The specific volume of the tidal breath that is delivered may adjusted according to the estimated weight of the patient, thereby preventing over inflation of the patient's lungs while undergoing treatment. To adjust the tidal breath volume, the user quickly changes the relative position of a slide adjuster which dictates the range of possible movement between the moving frame and the stationary frame, thereby limiting the volume of air/oxygen which may be drawn into the bellows.

Core Innovation

The invention provides an adjustable resuscitation device that limits tidal volume delivered to a patient. The device includes a stationary frame and a moving frame that at least partially encloses the stationary frame, and a bellows having two opposing ends couples the stationary frame and the moving frame so lateral movement between the frames is accommodated by a hollow interior of the moving frame.

Tidal volume limiting is achieved by a means for adjusting the tidal volume coupled to the moving frame. The adjustment is implemented via a slide adjuster that positions a stop-controlled stroke length for bellows intake and compression, and includes user-set measurement markings associated with patient weight. The moving frame also carries an oxygen valve, while a patient valve is coupled to the stationary frame to cooperate with the oxygen delivery during resuscitation.

The oxygen delivery and bellows cycling are supported by fluidic routing between the bellows, the oxygen valve, and a hollow interior of the stationary frame. In operation, the moving frame is disposed at a static position relative to the stationary frame, then moved in a proximal direction toward the patient to compress the bellows and deliver a volume of oxygen, and then moved in a distal direction away from the patient to refill the bellows with a new volume of oxygen. An alternative embodiment is described in which the tidal volume is adjusted using a spring/diaphragm-adjusted internal air volume with a vertically movable diaphragm controlled by a selector rod and marked lines.

Claims Coverage

The disclosed claim set includes two independent claims. The independent claims cover a tidal-volume limiting resuscitation device with a laterally movable moving frame and bellows-driven oxygen delivery, and a corresponding method that uses a slide adjuster based on estimated patient weight and performs proximal/distal frame movement cycles to deliver oxygen and refill the bellows.

Overall, claim coverage centers on a tidal-volume limiting resuscitation device using nested stationary and moving frames with a bellows linking the frames, a tidal volume adjustment means coupled to the moving frame, and an oxygen valve on the moving frame cooperating with a patient valve on the stationary frame. The method claim further requires estimating patient weight, manipulating the slide adjuster accordingly, and then performing proximal compression and distal refill cycles by moving the moving frame over the stationary frame while the stationary frame is disposed within a hollow interior of the moving frame.

Stated Advantages

Documented Applications