The Hospital for Sick Children

Doreen Engelberts

Thomas Looi

Peter Alexander Gordon

Brian Patrick Kavanagh

Rami Saab

Takeshi Yoshida

Kevin Al Xin Jue Luo

Kevin Ai Xin Jue Luo

This disclosure relates to device for providing continuous negative abdominal pressure (CNAP) which selectively recruits (inflates) the dorsal (spinal region) collapsed areas of the lung, while enabling the patient to remain in the supine (usual) position. The CNAP device includes a rigid frame configured to have a shape and size to envelop a patient's lower chest and abdominal area while in a supine position with the frame having opposed edges which sit on a surface on which the supine patient is resting. A series of panels are mounted in the frame such that the series of panels extend around the patient's lower chest and abdominal area. A flexible sheet wrapped around the outside of the panels and is long enough to extend up to the patient's upper chest and down to the patient's thighs and wide enough to envelop the supine patient's lower chest and abdominal area. Sealing members are to seal the flexible sheet over the frame and panels and around the patient's lower chest and pelvis, wherein a chamber is formed between the patient and said device when the patient is enveloped by the device. An air inlet coupling extends through one of the panels and is attachable to a suction source which is configured to generate negative pressure of between about &#x2212;5 to about &#x2212;10 cm HO inside the chamber.

Device for producing continuous negative abdominal pressure

This disclosure relates to device for providing continuous negative abdominal pressure (CNAP) which selectively recruits (inflates) the dorsal (spinal region) collapsed areas of the lung, while enabling the patient to remain in the supine (usual) position. The CNAP device includes a rigid frame configured to have a shape and size to envelop a patient's lower chest and abdominal area while in a supine position with the frame having opposed edges which sit on a surface on which the supine patient is resting. A pressure sensor is mounted to the frame for measuring a pressure inside the chamber and is connected to a display for displaying the pressure inside the chamber. An active pressure controller is connected to the pressure sensor, and a vacuum pump is in flow communication with inside the chamber and connected to the active pressure controller. The device includes a top up pump in flow communication with inside the chamber and connected to the active pressure controller which is programmed to instruct the vacuum pump to provide negative pressure in the chamber to start decompressing the chamber, and to instruct the top up pump to maintain the negative pressure in the chamber.

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Toronto, Canada

Doreen Engelberts