Medical Vest for High Frequency Chest Wall Oscillation (HFCWO) System

1 . Medical vest for High Frequency Chest Wall Oscillation (HFCWO) system, comprising at least a device comprising a deformable chamber and at least a port in communication with the chamber configured to let a pressurized fluid flowing alternatively in and out the chamber so that the inflatable device alternatively passes from an inflated configuration to a deflated configuration, characterized in that the device is configured to essentially expand along one single direction when passing from the deflated configuration to the inflated configuration and wherein the device comprises a body forming at least a part of the chamber, the body comprising bellows arranged for automatically decreasing the length of the body and bringing the device back to its deflated configuration when the chamber is not supplied with pressurized air.

2 . Medical vest according to claim 1 , wherein the device comprises a head operating repetitive back and forth movements and having an impact portion configured to transfer pulsations onto the body of the patient at each forth movement during usage and wherein the head and the body are made of a single part.

3 . Medical vest according to claim 1 , wherein the device comprises the body, a head configured to stroke the body of the patient during usage, and a base, the body extending between the base and the head, wherein the base comprises at least: an inlet port for feeding the chamber with pressurized fluid and at least an outlet port for communication between the chamber and a valve.

4 . Medical vest according to claim 1 , wherein the body is arranged to expand along said one single direction when the device passes from the deflated configuration to the inflated configuration.

5 . Medical vest according to claim 4 , wherein the body is arranged to expand according to a transverse direction that is substantially perpendicular to said one single direction and to retract along said single direction when the device passes from the inflated configuration to the deflated configuration.

6 . Medical vest according to claim 5 , wherein the expansion along said one single direction is higher than the expansion according to the transverse direction.

7 . Medical vest according to claim 1 , wherein the body comprises at least a wall forming the bellows, the thickness of the wall forming the bellows being comprised between 0.4 mm and 1.8 mm.

8 . Medical vest according to claim 1 , wherein the device comprises a head configured to stroke the body of the patient during usage, the body being substantially deformable along said one single direction and a base, the body extending between the base and the head, wherein the head is essentially not deformable in use and wherein the base is essentially not deformable in use.

9 . Medical vest according to claim 8 , wherein the base comprises the port and wherein the chamber is formed by the body, the head and the base.

10 . Medical vest according to claim 8 , wherein the head and the body are made of a single part made of silicon.

11 . Medical vest according to claim 1 , comprising a plurality of housings, at least some of the housing comprising a device.

12 . Medical vest according to claim 11 , wherein a housing has a first wall arranged to be in regard with the patient's body and a second wall arranged to be in regard with the outside during usage of the medical vest, the device comprising a head configured to be in contact with the first wall, a base configured to be in contact with the second wall and the body extending between the base and the head.

13 . High Frequency Chest Wall Oscillation (HFCWO) system comprising a medical vest according to claim 1 , and comprising means for delivering a pressurized fluid to the device.

14 . High Frequency Chest Wall Oscillation (HFCWO) system according to claim 13 , wherein at least some of the devices are independently provided with a pressurized fluid