Manual resuscitation bag with improved PEP exhaust valve

Inventors

Alberici, Luca • BUGATTI, Ottorino • MASSARO, Paolo • MASSERDOTTI, Fulvio

Assignees

Air Liquide Medical Systems SA

Abstract

The invention concerns a manual resuscitation bag having a first PEP exhaust valve (4) arranged in a first conduit element (3) and fluidly communicating with the ambient atmosphere for venting gas to the atmosphere when the gas pressure, into the first conduit element (3), exceeds a given pressure threshold. The first PEP exhaust valve (4) has a valve body (5) and a calibration mechanism (6, 12; 7-10) for setting a desired pressure threshold. The calibration mechanism (6, 12; 7-10) is a rotatable member (6), actuatable by a user, arranged on the valve body (5) and cooperating with a pressure adjusting device (7-10) arranged into the valve body (5), and a support member (12) comprising several markings (11) corresponding to several settable pressure values, arranged between the rotatable member (6) and the valve body (5).

Core Innovation

The invention relates to a manual resuscitation bag for cardiac arrest that comprises a deformable bag with a gas inlet and a gas outlet, and a first conduit element fluidly connected to the gas inlet. A first PEP exhaust valve is arranged in the first conduit element and fluidly communicates with the ambient atmosphere, and is configured for venting gas to the atmosphere when the gas pressure into the first conduit element exceeds a given pressure threshold.

The valve includes a valve body and a calibration mechanism for setting a desired pressure threshold. The calibration mechanism comprises a user-actuatable rotatable member arranged on the valve body that cooperates with a pressure adjusting device arranged into the valve body, and a support member comprising several markings corresponding to several settable pressure values is arranged between the rotatable member and the valve body.

The rotatable member further comprises a reading window that can be positioned so as to face one of the markings when the user actuates the rotatable member, thereby selecting a pressure threshold corresponding to one of the pressure values indicated by the markings readable through the reading window. In described embodiments, the calibration mechanism is implemented with a co-axial arrangement and a disk-shaped support member with fixation legs into valve body grooves, and a cup-like rotatable member with the reading window.

Additional configurations include a gas reservoir with an outlet, one-way admission and one-way downstream valves, and an oxygen entry or oxygen port for connecting an oxygen source to the first conduit element. Overpressure or relief and pneumatic control elements and conduits to patient interfaces are also described as optional features, together with patient interfaces such as a mask or tracheal cannula.

Claims Coverage

The document provides one independent claim. It contains 2 main inventive features: a PEP exhaust valve that vents to ambient when the pressure into a conduit exceeds a threshold, and a user-actuated calibration mechanism using a rotatable member with a reading window cooperating with a pressure adjusting device and a support member with markings for selecting the pressure threshold.

Overall, claim coverage centers on a manual resuscitation bag where a PEP exhaust valve vents to ambient above a set pressure threshold, and on a calibration mechanism that allows a user to select the threshold using a rotatable member, a support member with markings, and a reading window cooperating with an internal pressure adjusting device.

Stated Advantages

Documented Applications

No documented applications found