摘要:
A method for determining a sintering shrinkage of a pre-sintered body. The method includes providing a green preform with at least one design feature. The green-preform is pre-sintered to form a white body. At least one change in the at least one design feature with the pre-sintering is recorded. An expected sintering shrinkage to a dense-sintered component is determined using the recorded change.
摘要:
A method for producing a porous ceramic surface layer on a substrate includes providing a mixture including at least one polymer and at least one ceramic material and applying the mixture to the substrate.
摘要:
A method for determining a sintering shrinkage of a pre-sintered body. The method includes providing a green preform with at least one design feature. The green-preform is pre-sintered to form a white body. At least one change in the at least one design feature with the pre-sintering is recorded. An expected sintering shrinkage to a dense-sintered component is determined using the recorded change.
摘要:
The device in accordance with the invention for the sterilization of a hose coupling device (in its connected condition) of dialysis apparatus, comprises an opening housing into which the coupling device is placed. The coupling device is subjected to infrared radiation from heating elements in the housing whose heating effect is monitored and automatically controlled by a temperature probe arranged under the coupling device in the housing. Since the temperature probe is designed to have such an infrared absorption characteristic that the temperature increase rate of the probe is substantially the same as that of the coupling device, one may be certain that the coupling device will have reached the desired temperature (which is detected at the temperature probe) with only a slight delay if any. At the same time there is the advantage that the interior of the coupling device is heated to substantially above the minimum necessary sterilization temperature.
摘要:
A method and apparatus for the continuous conditioning of a cell suspension, more particularly whole blood, in order to obtain an erythrocyte concentrate which is returned to the patient by autotransfusion. In accordance with the invention there are three treatment stages, that is to say sedimentation of the cell suspension, the addition of washing solution to the cell concentrate and renewed sedimentation and separation of the washing solution.
摘要:
The invention relates to a closure cap (1) for dialyzers which is suitable for a so-called in-line sterilization. For this purpose the closure cap (1) comprises two cap parts (2, 3) of which the first cap part (2) is adapted to be mounted on a dialyzer flange (4) while the second cap part (3) is arranged movably in a receiving compartment (5) of the first cap part (2) between an open position and a closure position. In an open position passage of a sterilization medium is possible so that all the parts, sealing and guide surfaces can be reliably sterilized. In the closure position the second cap part (3) is pushed into a sealing position within the first cap part (2) so that contamination of the dialyzer after removal from the sterilization apparatus can be prevented with certainty.
摘要:
A filter comprising a filter housing with an interior within which between two closure members filter membranes in the form of hollow fibers are disposed. Between the hollow fibers a free flow space remains to which are connected two connecting pieces disposed inclined on the housing. Through said connecting pieces blood is supplied to the interior so that a filtration from the outside to the inside into the hollow fibers is possible. This and the arrangement of the connecting pieces gives an extremely favourable flow approach to the hollow fibers so that the blood flow is hardly influenced in its velocity and flow behaviour because in addition to the cross-section of the free flow space is adapted to the cross section of the blood supply line. For making such a filter at least two filters are arranged parallel and spaced apart in a plane, the support surface for the filters being rotatably mounted and the axis of rotation not intersecting any of the two longitudinal axes of the filters. During the rotation and supplying of the casting or sealing compound for the closure members through end-face supply means into the interior inclined faces are formed which in their angle correspond to the angle (.alpha., .beta.) of the connecting pieces.
摘要:
A device is disclosed for draining flexible fluid containers, in particular blood bags which form part of an extracorporeal system in a single needle-type arrangement, having a movable plate (4b) and a fixed plate (4a) in which both plates are configured to confront a flexible fluid container. A force member (14), and a force transfer means (8, 18), are arranged in such a way that the force acting upon the movable plate (4b) increases as the container is drained.
摘要:
This invention relates to a method for sterilizing a medical unit having at least two connections for a fluid flow pathway where a sterilizing medium flows through the medical unit.Medical units of this type are e.g. medical filters, in particular dialyzers. A high degree of sterility is here required. This is accomplished through the steps of:(a) inserting the medical unit into a system under pressure-tight coupling of the at least two connections to a feed conduit and discharge conduit of the system under atmospheric conditions;(b) passing the sterilizing medium from the system through the medical unit for a given period of time;(c) closing the at least two connections in the coupled state and in a germproof manner, without the same being opened, on completion of the sterilization operation; and(d) removing said medical unit from said system as a sterile medical unit with closed connections.All steps, including the removal of the medical unit, are therefore carried out in a system where the sterility obtained is constantly maintained. This "inline sterilization" guarantees a high degree of sterility of the medical units treated.
摘要:
The invention relates to a centrifuge arrangement having a centrifuge rotor comprising a drive disc (18) connected to a drive source. Furthermore, the centrifuge rotor comprises at least one separation container (1, 32) which comprises a separation passage (6) and a separation chamber (9) whose outlet and inlet passages lead to the center of the drive disc (18). Advantageously, the separation container (1, 32) is made as self-supporting part of rigid or semi-rigid but flexible material and this makes it possible to insert said container easily into the drive disc (18) and in addition provides advantages in the production of the centrifuge arrangement according to the invention.