Abstract: The invention relates to a two-stage blower apparatus 120 for a ventilator for providing a respiratory gas for a patient having a multi-part blower housing 121 comprising at least one first housing part 122 and a second housing part 132. A gas inlet 123 for the respiratory gas is provided on the first housing part 122 and a gas outlet 133 for the respiratory gas is provided on the second housing part 132, wherein the blower apparatus 120 comprises a first blower wheel 140 and a second blower wheel 150. The first blower wheel 140 or the second blower wheel 150 are arranged in sections in the first housing part 122 and are arranged in sections in the second housing part 132.

Abstract: An electro-optical hybrid connection assembly provides an optical connection of at least a first optical fiber and a second optical fiber that define a fiber axis and an electrical connection of at least a first electrical conductor and a second electrical conductor. The assembly includes a first connector and a second connector. The first connector includes a first ferrule that encloses the first optical fiber, a centering sleeve surrounding the first ferrule and projecting beyond at least one end of the first ferrule, and at least one electrical plug-in contact connected to the first electrical conductor. The second connector includes a second ferrule enclosing the second optical fiber, and at least one electrical plug-in contact connected to the second electrical conductor. Each of the two optical fibers has a plane fiber end aligned at right angles to the fiber axis and provided with an anti-reflection coating.

Abstract: An electro-optical hybrid connection assembly provides an optical connection of at least a first optical fiber and a second optical fiber that define a fiber axis and an electrical connection of at least a first electrical conductor and a second electrical conductor. The assembly includes a first connector and a second connector. The first connector includes a first ferrule that encloses the first optical fiber, a centering sleeve surrounding the first ferrule and projecting beyond at least one end of the first ferrule, and at least one electrical plug-in contact connected to the first electrical conductor. The second connector includes a second ferrule enclosing the second optical fiber, and at least one electrical plug-in contact connected to the second electrical conductor. Each of the two optical fibers has a plane fiber end aligned at right angles to the fiber axis and provided with an anti-reflection coating.