Patents Assigned to Asmund S. Laerdal A/S
  • Patent number: 6227864
    Abstract: A dummy for practicing cardiopulmonary resuscitation (CPR) of a human being has a simulation of the thorax in the form of a torso, a head simulation and a trachea/lungs simulation in the form of a bag. The thorax simulation formed by the torso is made of an elastically compressively deformable foam and further includes a chest plate accommodated under the chest side of the torso. The back of the torso is shaped to provide support bodies, such that compressive deformation of the foam of the torso and flexural deformation of the chest plate upon compression in the context of cardiac massage jointly simulate the natural deformation of a human thorax. That design can allow the dummy to be economically produced in spite of a realistic simulation and natural deformation characteristics.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: May 8, 2001
    Assignee: Asmund S. Laerdal A/S
    Inventors: Einar Egelandsdal, Ove Aske, Larry T. McKinney, Russell R. Mohberg
  • Patent number: 5468151
    Abstract: A dummy for practicing cardiopulmonary resuscitation (CPR) of a human being comprising a simulation of the thorax and the head and a lungs simulation in the form of a bag which can be inflated through the mouth or nose opening of the head. The thorax is formed by a hollow body of plastic material, which is in air exchange relationship with the atmosphere and which has stiffening ribs which reproduce approximately human ribs. In that arrangement the number and size of the stiffening ribs are so selected that the compressibility and return force of the thorax correspond to those of a human thorax not only in regard to extent but also in terms of their nature and form, and thus provide a particularly good approximation to the behavior of a human thorax.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: November 21, 1995
    Assignee: Asmund S. Laerdal A/S
    Inventors: Einar Egelandsdal, Geoffrey C. Garth, John Hamilton, David Johnson, Tore Laerdal, Charles A. Patterson
  • Patent number: 5330514
    Abstract: A dummy for practicing cardiopulmonary resuscitation (CPR) of a human being comprising a simulation of the thorax and the head and a lungs simulation in the form of a bag which can be inflated through the mouth or nose opening of the head. The thorax is formed by a hollow body of plastic material, which is in air exchange relationship with the atmosphere and which has stiffening ribs which reproduce approximately human ribs. In that arrangement the number and size of the stiffening ribs are so selected that the compressibility and return force of the thorax correspond to those of a human thorax not only in regard to extent but also in terms of their nature and form, and thus provide a particularly good approximation to the behavior of a human thorax (FIG. 1).
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: July 19, 1994
    Assignee: Asmund S. Laerdal A/S
    Inventors: Einar Egelandsdal, Geoffrey C. Garth, John Hamilton, David Johnson, Tore Laerdal, Charles A. Patterson
  • Patent number: 5256070
    Abstract: A dummy for practicing cardiopulmonary resuscitation (CPR) of a human being comprises a simulation of the thorax, the head and the lungs, with a spring device arranged in the thorax simulation to simulate the compression resistance of the thorax. The thorax simulation is a three-dimensional structure with a thorax cavity, which is cut out of flat foldable web material, for example, cardboard, along predetermined contour lines, folded along predetermined fold lines to provide the three-dimensional structure, and joined.
    Type: Grant
    Filed: July 28, 1992
    Date of Patent: October 26, 1993
    Assignee: Asmund S. Laerdal A/S
    Inventors: Geoffrey C. Garth, John Hamilton, Charles A. Patterson