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Robert F Gremel

age ~74

from Ladera Ranch, CA

Also known as:
  • F Robert
  • Robert F Gremer
  • Robert F r f Gremel
  • Robt F Gremel

Robert Gremel Phones & Addresses

  • Ladera Ranch, CA
  • 5621 Selkirk Dr, Huntington Beach, CA 92649 • (714)8460976
  • Orange, CA
  • 3 Queensberry Dr, Ladera Ranch, CA 92694 • (714)4938090

Work

  • Position:
    Transportation and Material Moving Occupations

Education

  • Degree:
    Bachelor's degree or higher

Emails

Us Patents

  • Pleat Construction For Bellows Heat Exchanger Manifold

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  • US Patent:
    6423269, Jul 23, 2002
  • Filed:
    Aug 9, 1999
  • Appl. No.:
    09/370357
  • Inventors:
    Robert F. Gremel - Huntington Beach CA
  • Assignee:
    Medtronic, Inc. - Minneapolis MN
  • International Classification:
    A61M 114
  • US Classification:
    422 46, 165164
  • Abstract:
    Heat exchanging contact of water and blood with a pleated metal bellow heat exchanging surface in a heat exchanger for an extracorporeal blood circuit is improved by so forming the pleats of the bellows that the fluid chamber inside each pleat continuously narrows from the mouth of the pleat toward the inner end of the chamber. Uniform water distribution along the bellows is accomplished by making the water manifold in the heat exchanger core much larger in cross section than the inlet fitting to the manifold.
  • Outlet Connector For Oxygenator

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  • US Patent:
    5974648, Nov 2, 1999
  • Filed:
    Mar 10, 1998
  • Appl. No.:
    9/037839
  • Inventors:
    Robert F. Gremel - Huntington Beach CA
  • Assignee:
    Medtronic, Inc. - Minneapolis MN
  • International Classification:
    B23P 1102
  • US Classification:
    29450
  • Abstract:
    The present invention is direct to a method of connecting a piece of tubing to an outlet manifold of an oxygenator that prevents excessively high positive or negative pressure from forming in the oxygenator and helps to minimize the possibility of misidentifyig the outlet connector. The outlet connector is hollow and substantially cylindrically tubular in shape so that a hollow inner conduit is formed. The outlet connector is in fluid communication with the outlet manifold of an oxygenator through the inner conduit. In one embodiment, the outlet connector has an elongated hole extending through the tubular material of the outlet connector into the hollow inner conduit formed therein. The elongated hole is preferable large enough to be felt by the fingers of the person connecting tubing to the outlet connector. The elongated hole is preferably arrow shaped with the arrow pointing in the direction of fluid flow out of the outlet manifold.
  • Transition Manifold For Blood Oxygenator Apparatus

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  • US Patent:
    5858233, Jan 12, 1999
  • Filed:
    Jan 11, 1996
  • Appl. No.:
    8/586163
  • Inventors:
    Roger J. Elgas - Anaheim Hills CA
    Robert F. Gremel - Huntington Beach CA
    Robert Cushing Hamlen - St. Paul MN
  • Assignee:
    Medtronic, Inc. - Minneapolis MN
  • International Classification:
    B01D 6100
    A61M 114
  • US Classification:
    210456
  • Abstract:
    A transition manifold is provided for use in association with the upper end of a generally cylindrical heat exchanger fiber bundle having a plurality of vertically extending conduits with open upper ends terminating in substantially co-planar fashion. The transition manifold is specially configured for redirecting blood flowing out of the upper end of the heat exchanger fiber bundle radially outwardly around the fibers of a concentric, surrounding oxygenator fiber bundle. The transition manifold includes a generally conical wall member defining a surface which extends at a relatively flat angle with respect to a plane perpendicular to a vertical central axis of the heat exchanger fiber bundle. The surface of the conical wall member diverges away from the upper end of the heat exchanger fiber bundle in a direction moving radially outwardly from the central axis. The transition manifold spreads the blood substantially uniformally around an upper portion of the generally cylindrical oxygenator fiber bundle while minimizing shear forces that traumatize blood cells and platelets and minimizing recirculations which can lead to clotting.
  • Core Structure For Blood Oxygenators

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  • US Patent:
    5762875, Jun 9, 1998
  • Filed:
    Jan 16, 1996
  • Appl. No.:
    8/586523
  • Inventors:
    Robert F. Gremel - Huntington Beach CA
    Roger J. Elgas - Anaheim Hills CA
  • Assignee:
    Medtronic, Inc. - Minneapolis MN
  • International Classification:
    A61M 114
  • US Classification:
    422 45
  • Abstract:
    The obstruction of a curved blood manifold window in a blood oxygenator by oxygenation fibers which lie along a chord of a curved window when wound upon the oxygenator core is avoided by recessing the manifold wall portions most closely adjacent the window sufficiently so that the fibers lying on that chord remain sufficiently spaced from those closest wall portions to allow blood flow between those wall portions and the closest fibers.
  • Inlet Manifold For Blood Oxygenator Apparatus

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  • US Patent:
    5922202, Jul 13, 1999
  • Filed:
    Jan 11, 1996
  • Appl. No.:
    8/584185
  • Inventors:
    Roger J. Elgas - Anaheim Hills CA
    Robert F. Gremel - Huntington Beach CA
    Robert Cushing Hamlen - St. Paul MN
  • Assignee:
    Medtronic, Inc. - Minneapolis MN
  • International Classification:
    B01D 6500
    B01D 6302
  • US Classification:
    210456
  • Abstract:
    A blood inlet manifold is provided for connection to a first end of a blood heat exchanger including a plurality of hollow conduits arranged in a bundle. A plurality of first ends of the conduits terminate adjacent the first end of the blood heat exchanger and a plurality of second ends of the conduits terminate adjacent a second end of the blood heat exchanger. The blood inlet manifold includes a blood inlet nozzle having an upstream segment and a downstream segment. The upstream segment is connectable to a tube for conveying blood. The blood inlet manifold further includes a generally conical wall member connected to the downstream segment of the blood inlet nozzle and connectable to the first end of the blood heat exchanger. The connection of the blood inlet manifold to the blood heat exchanger defines a chamber between the conical wall member and the first set of ends of the conduits. An interior of the downstream segment of the blood inlet nozzle opens into this chamber.
  • Blood Heat Exchange System Employing Micro-Conduit

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  • US Patent:
    5876667, Mar 2, 1999
  • Filed:
    Jan 11, 1996
  • Appl. No.:
    8/584275
  • Inventors:
    Robert F. Gremel - Huntington Beach CA
    Sean D. Plunkett - Mission Viejo CA
    Henry W. Palermo - Burbank CA
    Gary D. Reeder - Morrison CO
    Peter Z. Kubisa - Littleton CO
    Peter J. Hier - Castle Rock CO
  • Assignee:
    Medtronic, Inc. - Minneapolis MN
  • International Classification:
    A61M 136
  • US Classification:
    422 44
  • Abstract:
    Micro-conduit with enhanced wetting characteristics for use in providing a blood heat exchanger apparatus with improved heat exchange capability. The micro-conduit comprises a plurality of elongated fibers, which may be made of a hydrophobic material such as polypropylene or polyethylene. Each fiber is open at two opposing ends, and has an inner surface between the open ends. The inner surface is coated with a wetting agent, such as phosphatidyl choline or another ampiphilic material with a hydrophilic end and a hydrophobic end. The fibers may have a shape and size that without presence of the wetting agent, would otherwise substantially impair free passage of water. The micro-conduit may be provided as a heat exchanger micro-conduit wrapping material, wherein micro-conduit fibers are attached to a thin flexible interconnect, such as woven netting, to maintain the fibers at predetermined spacings in substantially parallel alignment with each other. The wrapping material is wrapped about an elongated spindle to provide a generally cylindrical heat exchange core. Opposing first and second seals are created by applying potting compound between fibers proximate the spindle's first end and proximate the spindle's second end.
  • Outlet Connector For Oxygenator

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  • US Patent:
    5788287, Aug 4, 1998
  • Filed:
    Jan 17, 1996
  • Appl. No.:
    8/591240
  • Inventors:
    Robert F. Gremel - Huntington Beach CA
  • Assignee:
    Medtronic, Inc. - Minneapolis MN
  • International Classification:
    A61M 103
  • US Classification:
    285 13
  • Abstract:
    The present invention is an outlet connector configuration for an oxygenator that prevents excessively high positive or negative pressure from forming in the oxygenator and helps to minimize the possibility of misidentifying the outlet connector. The outlet connector is hollow and substantially cylindrically tubular in shape so that a hollow inner conduit is formed. The outlet connector is in fluid communication with the outlet manifold of an oxygenator through the inner conduit. In one embodiment, the outlet connector has an elongated hole extending through the tubular material of the outlet connector into the hollow inner conduit formed therein. The elongated hole is preferable large enough to be felt by the fingers of the person connecting tubing to the outlet connector. The elongated hole is preferably arrow shaped with the arrow pointing in the direction of fluid flow out of the outlet manifold. In an alternate embodiment, the outlet connector has a channel formed in the outer surface of the outlet connector.
  • Blood Filter

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  • US Patent:
    4743371, May 10, 1988
  • Filed:
    Feb 28, 1986
  • Appl. No.:
    6/837334
  • Inventors:
    Frank M. Servas - San Juan Capistrano CA
    Robert F. Gremel - Huntington Beach CA
    Timothy C. Ryan - Laguna Hills CA
  • Assignee:
    Shiley, Inc. - Irvine CA
  • International Classification:
    B01D 2904
  • US Classification:
    210188
  • Abstract:
    A filter device for a cardiotomy reservoir comprises multiple layers of concentric, tubular elements with a central passage for supply of blood, purified by passage through the device. A first, inner element for defoaming the blood comprises a porous sponge material within a second element comprising a depth filter medium for filtering the blood. The depth filter is surrounded by a third element of porous sponge material spacing apart the depth filter and the outer, fourth element, a fine-filter screen for removing substantially all remaining, undesirable particulate matter in the blood.

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