Comprising Flexible Bowls Embraced By Pockets Provided Therefor In Carrier Patents (Class 494/21)
  • Patent number: 4493691
    Abstract: The device comprises a rotor formed with a circumferential groove including a widening with an apertured bottom whereat two monitoring stroboscopes are arranged, the groove being provided for engaging with the red cell and plasma exit end of a disposable bag, the other end whereof is so designed and arranged as to receive whole blood.
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: January 15, 1985
    Assignee: Dideco S.P.A.
    Inventor: Alessandro Calari
  • Patent number: 4482342
    Abstract: A cell washing method and apparatus which utilizes centrifugation to separate blood components in a flexible bag. The less dense separated components e.g., supernatant, is expressed from the bag by centrifugal force acting on a plate adjacent the bag and the more dense component e.g., RBC's, remains. The bag is oriented at a double angle in the centrifuge so that less dense component accumulates at one location and more dense at a second location diagonally opposite the first location, thus facilitating removal of the less dense and washing of the more dense component.
    Type: Grant
    Filed: June 17, 1982
    Date of Patent: November 13, 1984
    Assignee: Haemonetics Corporation
    Inventors: Richard M. Lueptow, Jeffrey J. Peterson
  • Patent number: 4445883
    Abstract: A deformable support for a pressure plate blood processing centrifuge apparatus is described. A plate 50 is disposed adjacent a deformable support 10 having a recess for a flexible bag 8 in which blood is processed. Under the influence of centrifugal force the plate 50, which is disposed inwardly nearer the center of rotation than the bag 8, exerts a force against the support 10 and bag 8 and expels a separated blood component from the bag into a receiver container 6.The support 10 absorbs forces in the bag 8 thereby enabling the bag to be made of thin walled inexpensive material which would otherwise rupture under the separation forces. Yet the support 10 is sufficiently yielding to enable the pressure plate 50 to move and create an expelling force.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: May 1, 1984
    Assignee: Haemonetics Corporation
    Inventor: Donald W. Schroendorfer
  • Patent number: 4413772
    Abstract: A blood bag is described which aids in maintaining the separation of blood components. This bag is constructed of a flexible plastic, has a conical top leading to an outlet line and internal septa to reduce swirling of the bag's contents during rotor deceleration. The bag is adapted to be placed in a split sleeve prior to placement in the swinging bucket of a centrifuge rotor. A collar is placed over the top of the bag to aid in reducing wrinkles in the bag.Methods are described for reducing contamination of separated blood components by reducing bag wrinkles, reducing swirling of the blood fractions during rotor deceleration, and reducing mixing during expression.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: November 8, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Vernon C. Rohde, William A. Romanauskas
  • Patent number: 4413771
    Abstract: A blood bag is described which aids in maintaining the separation of blood components. This bag is constructed of a flexible plastic, has a conical top leading to an outlet line and internal septa to reduce swirling of the bag's contents during rotor deceleration. The bag is adapted to be placed in a split sleeve prior to placement in the swinging bucket of a centrifuge rotor. A collar is placed over the top of the bag to aid in reducing wrinkles in the bag.Methods are described for reducing contamination of separated blood components by reducing bag wrinkles, reducing swirling of the blood fractions during rotor deceleration, and reducing mixing during expression.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: November 8, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Vernon C. Rohde, William A. Romanauskas
  • Patent number: 4413773
    Abstract: A blood bag is described which aids in maintaining the separation of blood components. This bag is constructed of a flexible plastic, has a conical top leading to an outlet line and internal septa to reduce swirling of the bag's contents during rotor deceleration. The bag is adapted to be placed in a split sleeve prior to placement in the swinging bucket of a centrifuge rotor. A collar is placed over the top of the bag to aid in reducing wrinkles in the bag.Methods are described for reducing contamination of separated blood components by reducing bag wrinkles, reducing swirling of the blood fractions during rotor deceleration, and reducing mixing during expression.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: November 8, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Vernon C. Rohde, William A. Romanauskas
  • Patent number: 4395257
    Abstract: A separating vessel, intended to be inserted into a separating centrifuge, consists in a hollow cylinder manufactured from a soft PVC, whereby connection conduits for the feed of the liquid to be separated and for the discharge of the separated fractions open into said hollow cylinder. The separating centrifuge comprises a centrifuge rotor which is rotatable around a first axis of rotation and is driven by a driving motor via a driving arrangement. There is provided further a support mounted to the centrifuge rotor to rotate around a second axis of rotation. The two axis of rotation extend perpendicularly to each other. There is provided furthermore a connecting part receiving the connection conduits, which connecting part is mounted at one end against rotation and lies on the first axis of rotation. The supporting device rotates in order to equalize a twisting of the connecting conduits.
    Type: Grant
    Filed: May 28, 1981
    Date of Patent: July 26, 1983
    Assignee: Doltron AG
    Inventor: Paul Manella