摘要:
A device (20) for the topical dispensing of a powder, typically a powder medicament, comprises, or is adapted to be coupled to, a powder receptacle (31) and a gasflow generator. The gasflow generator is adapted, in use, to cause gas to flow through the device (20), which further comprises an agitator by which the powder and/or the powder receptacle (31) can be mechanically agitated. Actuation of the gasflow generator, which causes gas to flow through the device (20) and to entrain powder from the powder receptacle (31), thereby to dispense powder from the device (20), is accompanied by actuation of the agitator, causing the powder receptacle (31) to be mechanically agitated, thereby facilitating the release of powder from the powder receptacle (31).
摘要:
A method and a device for separating a component, such as fibrin monomer from blood, by centrifugation, involve feeding of blood admixed an anticoagulant to a first annular chamber in a device, where the annular chamber is defined by a cylindrical outer wall and a cylindrical inner wall, both walls extending coaxially about a common axis, as well as by a top wall and a bottom wall. The top wall or the bottom wall is formed by a piston body displaceable within the first chamber. This method involves furthermore a centrifugation of the device about the said common axis to substantially separate blood into a cell fraction and a plasma fraction followed by the resulting plasma fraction being transferred while influenced by the piston body to a second chamber defined by an outer cylindrical wall. The outer cylindrical wall extends coaxially with the said common axis, whereby a fraction with fibrin I is caused to be separated in the second chamber while a suitable enzyme is being added. The separation of fibrin monomer from the plasma fraction in the second chamber is carried out during continued centrifugation whereby a fibrin polymer is deposited on the cylindrical outer wall of said second chamber, whereafter the fluid fraction collected at the bottom of the second chamber is transferred while influenced by the piston body to the first chamber. The fraction with fibrin polymer remaining in the second chamber is substantially deposited on the cylindrical wall and is caused to be dissolved by addition of a solvent and by centrifugation, whereafter it is transferred to a receiving container by passing after addition of a binder to the enzyme through a filter removing said enzyme, whereby a fibrin monomer containing solution is provided.
摘要:
An apparatus for separating e.g., a fibrin monomer from blood includes a container (110) with a reaction chamber defined by an outer wall for receiving plasma and a means for supplying the chamber with an agent for converting the fibrinogen content of the plasma into a non-cross-linked fibrin polymer. The apparatus includes a device for centrifuging the plasma and the agent within the chamber to a degree sufficient for separating the fibrin polymer from the plasma, depositing the polymer on the outer wall of the chamber and expelling the remaining plasma from the chamber. The container (110) includes means for supplying the chamber with a solvent for dissolving the fibrin polymer. The apparatus includes a measuring device (130) for measuring the amount of the deposit of the fibrin polymer on the outer wall of the container (110) and a control unit (131) for controlling the addition of solvent in response to the amount of polymer.
摘要:
L'invention a pour objet une poche (1) destinée à la défibrination d'un fluide biologique tel que le sang ou le plasma sanguin, du type comprenant une enveloppe extérieure (2) formant un volume intérieur (6) pour ledit fluide, ladite enveloppe (2) étant munie d'au moins un orifice d'entrée (7) et/ou de sortie (8) du fluide, dans laquelle au moins un élément textile (9) apte à fixer la fibrine du fluide est disposé dans le volume intérieur (6). L'invention concerne également un système à poches comprenant une telle poche, des procédés de défibrination ainsi que l'utilisation d'un élément textile (9) pour la défibrination d'un fluide biologique.
摘要:
A method for separating a blood component, e.g., fibrin monomer, from blood or plasma. The method utilizes a container with a reaction chamber for receiving the plasma. The reaction chamber is defined by a wall and an agent is supplied to the reaction chamber for converting the fibrinogen content of the plasma into a non-cross-linked fibrin polymer. The method also utilizes a device for centrifuging the reaction chamber with the plasma and the agent to a degree sufficient for separating the non-cross-linked fibrin polymer from the plasma, for depositing the polymer on the outer wall of the reaction chamber, and for expelling the remaining plasma from the reaction chamber. A solvent is supplied to the reaction chamber for dissolving the non-cross-linked fibrin polymer. The solvent is supplied to the reaction chamber in a first amount for dissolving the non-cross-linked fibrin polymer which is less than the total amount of solvent for dissolving the polymer. The remaining solvent is supplied to the reaction chamber in one or more portions to flush the reaction chamber and other portions of the device and recover additional non-cross-linked fibrin polymer.
摘要:
An apparatus for separating e.g., a fibrin monomer from blood includes a container (110) with a reaction chamber defined by an outer wall for receiving plasma and a means for supplying the chamber with an agent for converting the fibrinogen content of the plasma into a non-cross-linked fibrin polymer. The apparatus includes a device for centrifuging the plasma and the agent within the chamber to a degree sufficient for separating the fibrin polymer from the plasma, depositing the polymer on the outer wall of the chamber and expelling the remaining plasma from the chamber. The container (110) includes means for supplying the chamber with a solvent for dissolving the fibrin polymer. The apparatus includes a measuring device (130) for measuring the amount of the deposit of the fibrin polymer on the outer wall of the container (110) and a control unit (131) for controlling the addition of solvent in response to the amount of polymer.
摘要:
An apparatus for preparing a concentrate of coagulation factors, such as fibrinogen, from a blood sample, comprises a first chamber (14) for collection and separation of said blood sample so as to separate a plasma fraction, and a second chamber (15) for collection of said plasma fraction through a tubing member (22, 30) and a valve (24) and for precipitation of said concentrate. The apparatus comprises furthermore a removable syringe (36) for receiving the concentrate from the second chamber (15) through a tubing member (32). The first and the second chamber (14, 15) are partially defined by the same integrally formed solid container wall (2) and comprise a common partition. The first chamber (14) is further defined by a piston (4) displaceable both in connection with the blood sample collection and the transfer of said plasma fraction to the second chamber (15) and in connection with returning said plasma fraction to the first chamber (14) upon the precipitation of the concentrate.
摘要:
An instrumentality for promulgating the cryoprecipitation of fibrinogen from a blood product. The instrumentality contemplates a container for the blood product, an apparatus for creating the fibrinogen within the container and a method of manipulating the container within the apparatus and subsequently after fibrinogen has been formed. The apparatus includes a receiver within which the container is supported, a motion transfer device for the receiver to impart motion to the container while simultaneously subjecting the container to a temperature differential to cause heat transfer. The motion imparted to the container results in a thin coating of the blood product being disposed on an interior surface of the container which, in turn, is exposed to a heat transfer fluid through the wall of the container. Successive coatings placed on an interior of the container are timed such that each coating is placed on a previous coating that has changed phase. Flexure of the container after the contents of the container have been frozen can occur by providing a vacuum within the container causing an implosion of frozen material. Subsequent phase change back to a liquid and then a second freeze/thaw followed by centrifugation causes a cryo-fraction to be precipitated therefrom. The container within which the blood product is housed includes an opening for admission of the blood product therewithin, an outlet for extraction of fibrinogen and access to a source which can provide a pressure differential vis a vis the interior and exterior of the container. Information of the temperature profile within the container may also be provided.
摘要:
Appareil de préparation d'un concentré de facteurs de coagulation, tel que le fibrinogène, à partir d'un échantillon de sang, qui comprend une première chambre (14) pour recueillir ledit échantillon de sang et en séparer une fraction de plasma et une deuxième chambre (15) pour recueillir ladite fraction de plasma par l'intermédiaire de tubes (22, 30) et d'un clapet (24) et pour précipiter ledit concentré. L'appareil comprend en outre une seringue amovible (36) servant à recevoir le concentré provenant de la deuxième chambre (15) par l'intermédiaire d'un tube (32). La première et la deuxième chambre (14, 15) sont partiellement définies par la même paroi de réservoir solide (2) formée d'un seul bloc et comprennent une paroi commune. La première chambre (14) est, de plus, définie par un piston (4) pouvant se déplacer à la fois pour recueillir ledit échantillon et transférer ladite fraction de plasma à la deuxième chambre (15) et également pour faire revenir ladite fraction de plasma dans la première chambre (14) lors de la précipitation du concentré.