Siemens Elema Ab

G&ouml;ran Skog

Erik Krahbichler

Fredrik Jalde

Bruno Slettenmark

Lars Wallen

Carl-Erik Arvidsson

Per-G&ouml;ran Eriksson

Kurt H&ouml;gnelid

Bo Lundin

Lars Wall&eacute;n

An apparatus for supplying a breathing gas to a patient has a gas supply for generating a flow of breathable gas during an inspiration and an expiration phase of a patient breathing cycle. An inspiration line is provided having an inlet through which a flow of breathing gas from the supply can pass as well as an expiration line through which an expiration gas from the patient can flow. A flow controller is provided for selecting, during an inspiration phase, a first flow path for gas from the supply into the inlet and for selecting, during the expiration phase, a second flow path for gas from the supply in a direction across a venturi outlet of the expiration line, to enhance removal of expiration gas therefrom by venturi suction.

Apparatus for the supply of a breathing gas

An arrangement to provide a moisture barrier and bacteria barrier for various medical components that is connected to a measuring tube, arranged in the flow paths of a respirator is simple and inexpensive and exchangeable and does not cause a flow resistance in the flow paths of the respirator. A carrier carries at least two moisture barriers and bacteria barriers such that one barrier, given a carrier introduced in the respirator, is arranged exactly in front of each component.

Moisture barrier and bacteria barrier for medical components

An ultrasonic flow meter for measuring a flow in a measurement channel has a first sensor chamber with a first membrane arranged against the measurement channel and a first transducer arranged at a specific distance from the first membrane, and a second sensor chamber with a second membrane arranged against the measurement channel and a second transducer arranged at a specific distance from the second membrane is described. The first membrane and the second membrane are gas-tight. In order to reduce loads on the membrane, while still allowing the membrane to be made as thin as possible, the first sensor chamber and the second sensor chamber are gas-tight, a first gas line connects the first sensor chamber to the measurement channel and a second gas line connects the second sensor chamber to the measurement channel.

Dual chamber ultrasonic flow meter with membranes having equal pressure on opposite sides thereof

A device for repeated registration of the number of thermal cycles to which a part for medical usage has been subjected has a temperature-sensitive element and/or a pressure-sensitive element arranged in conjunction with the part. This element reversibly changes its physical shape with temperature and/or pressure, variations in pressure being invariably associated with changes in temperature. A registration unit registers this change in shape when it exceeds a specific threshold value, as an indication of the part undergoing, or having undergone, a thermal cycle.

Device for repeated registration of the number of thermal cycles to which a part for medical usage has been subjected

In a method for determining the elastic volume (representing the gas which must be added to compensate for the compression of gas occurring in the tubing system) of a tubing system connected to a patient without the patient's lungs and airways entering into the determination, a determination of the volume of the tubing system is made at two different pressures during one breathing cycle and the elastic volume is calculated from the volumes thus determined. The volume of the tubing system can be established by adding a predetermined flow of a first gas to the tubing system, while constant pressure is maintained in the tubing system, when the flow of breathing gas to/from the patient is virtually zero, determining when the first gas starts flowing out of the tubing system and determining the volume of the added first gas, this volume constituting the volume of the tubing system.

Method for determining the volume of a tubing system and a breathing apparatus system

An apparatus panel for placement at least partially in front of a screen or display or over a printed surface, has at least two stacked, transparent panel plates, a mechanical user interface in the form of at least one mechanically actuated regulating arrangement and a corresponding contact arrangement. In order to reduce the risk of leakage into the panel, the panel is devised so that regulating arrangement and the contact arrangement are physically separated by at least one of the panel plates and can sense each other's relative positions and, accordingly, the mechanical user interface's setting, without touching.

Apparatus panel

A valve arrangement includes a variable aperture through which fluid may flow, a closure element adjustable to vary the size of the aperture, and a sensor unit which generates an output signal dependent on the aperture size. The sensor unit has a light detector disposed downstream of the aperture to detect light passed through the aperture and to generate the output signal dependent on the detection of the light. This signal is supplied to a visual display unit having indicators that are respectively activated to show if the valve is open or closed.

Growing community of inventors

Bromma, Sweden

Göran Skog

Growing community of inventors

Bromma, Sweden

G&ouml;ran Skog

Göran Skog