A dressing includes a drape, a metal coating provided on a skin-facing surface of the drape, a pressure-sensitive adhesive provided on a lower surface of the metal coating, and a gasket having a frame shape. The drape is a thin film. The gasket includes an inner edge defining an opening and an outer edge offset inwardly from an outer periphery of the drape. The gasket is in contact with the metal coating and leaves a margin of pressure-sensitive adhesive around the gasket.

A method of pressure control in the pneumatic compression bandage and a pneumatic compression bandage includes a cuff with a chamber to be filled with a pressurized fluid. The device has a harness to fasten the cuff in the wound area and a control and pumping unit (6) connected pneumatically to the chamber in the cuff via a hose. The unit includes an electrical pump, an electromechanical valve connected electrically with the unit, a pressure sensor connected electrically with the unit (6). The controller of the pressure in the cuff chamber is of the PID type, including a proportional, integral and derivative modules, to control the electric pump to increase pressure in the cuff chamber and to control the valve to reduce pressure in the cuff chamber.

A valve arrangement for administering an instillation and/or negative pressure therapy through at least a first wound dressing and a second wound dressing includes a valve arrangement including a first flow path, a first valve, a second flow path, and a second valve. The first flow path extends between a source port and a first wound dressing port structured for fluid communication with the first wound dressing. The first valve is positioned in the first flow path. The second flow path extends between the source port and a second wound dressing port structured for fluid communication with the second wound dressing. The second valve is positioned in the second flow path.

The present invention relates to wound dressings for use in cases of a patient suffering a penetrating chest trauma. The wound dressing comprises a base layer having a lower surface facing the wound and an upper surface facing away from the wound, and an aperture therethrough for locating over the wound, and a top layer extending over the aperture and at least a part of the upper surface. The base layer is connected to the top layer such that the wound dressing can transition from an open configuration in which the aperture and an area external to the wound dressing are in fluid communication via at least one opening at a perimeter between the base layer and the top layer, to a closed configuration in which the top layer forms a seal over the aperture.

A medical dressing configured to be applied to a chest wound, the dressing including: a flexible main membrane including a front surface configured to face a chest of a patient and a back surface opposite to the front surface, wherein the flexible main membrane includes an opening; an adhesive layer on the front surface of the main membrane wherein the adhesive layer extends entirely around the opening; a flexible sealing membrane entirely covering the opening of the flexible main and overlapping at least a portion of the main membrane; an annular array of joints sandwiched between the sealing membrane and the main membrane, wherein the array of joints extends around the opening; and vent passages sandwiched between the main membrane and the sealing membrane, wherein vent passages each extend between an adjacent pair of the joints and defines an air passage from the opening and to an outer edge of the sealing membrane.

Wound dressings for use in cases of a patient suffering a penetrating chest trauma. The wound dressing includes a base layer having a lower surface facing the wound and an upper surface facing away from the wound, and an aperture therethrough for locating over the wound, and a top layer extending over the aperture and at least a part of the upper surface. The base layer is connected to the top layer such that the wound dressing can transition from an open configuration in which the aperture and an area external to the wound dressing are in fluid communication via at least one opening at a perimeter between the base layer and the top layer, to a closed configuration in which the top layer forms a seal over the aperture.

A chest seal includes a seal body, a hub port at the seal body, at least one main channel at the seal body, and a first secondary channel at the seal body. The hub port extends from a first seal body side toward a second seal body side. The at least one main channel is in fluid communication with the hub port, and the at least one main channel includes a main channel inlet at the hub port and a main channel outlet at a perimeter of the seal body. The first secondary channel includes a first secondary channel inlet at the at least one main channel and a first secondary channel outlet at the perimeter of the seal body. The first secondary channel outlet is spaced apart about the perimeter of the seal body from the main channel outlet.