Abstract: In some aspects, a switching device for a medical apparatus includes a first switching member adapted to select an assigned operating function of the medical apparatus; and a second switching member adapted to permit the selecting of the assigned operating function of the first switching member. The second switching member is adapted such that it has a detection space in which it detects a presence of an operating object; and the first switching member is arranged in the detection space of the second switching member.

Abstract: A method for generating a flow by a peristaltic hose pump, a generated fluid pressure being limited to 500 mbar and being achieved and maintained without a pressure measurement during operation of the pump. A length of a flexible and elastic pump segment of a hose is adjusted such that, while a roller wheel is stationary, and while the segment is guided under tension around the roller wheel, and when applying a fluid pressure in the range from 10 to 400 mbar to one end of the pump segment, a backflow leakage in the opposite direction to the direction of rotation of the roller wheel is created, and a flow of the fluid of at least 0.01 l/min through the pump segment is obtained, taking into account the backflow leakage. The distance of fixing points of each end of the pump segment to the roller wheel rotation axis is fixed.

Abstract: A method for generating a flow by a peristaltic hose pump, a generated fluid pressure being limited to 500 mbar and being achieved and maintained without a pressure measurement during operation of the pump. A length of a flexible and elastic pump segment of a hose is adjusted such that, while a roller wheel is stationary, and while the segment is guided under tension around the roller wheel, and when applying a fluid pressure in the range from 10 to 400 mbar to one end of the pump segment, a backflow leakage in the opposite direction to the direction of rotation of the roller wheel is created, and a flow of the fluid of at least 0.01 l/min through the pump segment is obtained, taking into account the backflow leakage. The distance of fixing points of each end of the pump segment to the roller wheel rotation axis is fixed.

Abstract: In some aspects, a switching device for a medical apparatus includes a first switching member adapted to select an assigned operating function of the medical apparatus; and a second switching member adapted to permit the selecting of the assigned operating function of the first switching member. The second switching member is adapted such that it has a detection space in which it detects a presence of an operating object; and the first switching member is arranged in the detection space of the second switching member.

Abstract: The invention concerns a peristaltic hose pump comprising a roller wheel (1) rotatable about a roller wheel axis (D), which roller wheel has rollers that are mounted thereon (2), the roller wheel rotation axes (R) of which are arranged on a circle concentric with the roller wheel axis (D), the rollers (2) partly projecting beyond the roller wheel (1), comprising a hose (3), which has a flexible and elastic pump segment (4), and the pump segment (4) being fixable in the axial direction at its two opposite ends (5, 6) by means of one fixing point (P1, P2) each, and the pump segment (4) being guided around the roller wheel (1) under elastic tension, wherein the length (L1) of the pump segment (4) when not under tension in proportion to the distance (A) of the fixing points (P1, P2) to the roller wheel rotation axis (D) is adjusted with the provision that while the roller wheel (1) is stationary and when applying a fluid pressure in the range from 10 to 400 mbar to one end (P1, P2) of the pump segment (4), a flow

Abstract: A medical device with a medical apparatus (2) includes an accessory port, and with at least one accessory piece (1) having a connection element that is complementary to the accessory port. The connection element includes a storage unit where coded identification information is stored. With accessory piece (1) connected to device (2) coded or un-coded identification information is readable by a readout unit disposed in the section of the accessory port. In the case of reading coded identification information, de-codable, read-out and de-coded identification information is compared to identification information stored in readout unit. The medical device is activated when the identification information matches the desired identification information. The device is blocked when the identification information does not match. The coded identification information is de-coded by means of a proprietary key code.

Abstract: A medical device with a medical apparatus (2) comprising an accessory port, and with at least one accessory piece (1) comprising a connection element being complementary to said accessory port, the connection element including a storage unit (K) where coded identification information are stored, with accessory piece (1) connected to device (2) coded or un-coded identification information being readable by means of a readout unit (P) disposed in the section of said accessory port and, in the case of reading coded identification information, being de-codable, read-out and de-coded identification information being compared to identification information stored in readout unit (P), and the medical device being activated when the identification information match the desired identification information, and being blocked when the identification information do not match, and coded identification information being de-codable by means of a proprietary key code

Abstract: An expansion compensator suitable for controlling the thermal expansion of a pipeline between fixedly disposed components, which comprises a linear pipeline extending between a pair of longitudinally spaced stress-susceptible pipeline components, a longitudinally spaced pair of linear strain equalizers interposed in the linear pipeline between and spaced inwardly from the components, and a pair of overlapping longitudinal anchors affixed to the linear pipeline, each of the anchors further overlapping one of the strain equalizers the combined distances between the outer end of each of the anchors and the adjacent component being substantially equal to the amount of overlap of the anchors.