Patents by Inventor Otto Frey

Otto Frey has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4936859
    Abstract: The reinforcement is formed of a peg from which a plurality of flaps extend with slots formed between adjacent flaps. The flaps serve to separate a bone cement bed within the interior of the reinforcement from a layer of a compacted spongy tissue externally of the reinforcement. The slots between the flaps extend over the entire height of the reinforcement and permit substantial spreading or widening of the flaps radially in order to adapt to the individual operation cavity and to anchoring stems of different cross-sectional sizes and shapes.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: June 26, 1990
    Assignees: Sulzer Brothers Limited, Protek AG
    Inventors: Erwin W. Morscher, Otto Frey
  • Patent number: 4936861
    Abstract: The plastic cup-comprising member and the hemispherical shell of the two-part acetabular cup prosthesis are secured relative to one another in snap-fitted manner. The plastic member is centered and guided during pressing-in via a centering pin and concentric annular web on the plastic member. The annular web is also locally deformable so as to deform against a screw head during pressing-in without the annular web losing its centering guiding action.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: June 26, 1990
    Assignees: Sulzer Brothers Limited, Protek AG
    Inventors: Maurice E. Muller, Otto Frey, Roland Willi
  • Patent number: 4932969
    Abstract: The joint endoprosthesis is formed of a compressible elastic hollow body which is disposed between two anchoring elements. The hollow body defines a closed cavity which is filled with an incompressible fluid medium. Compressive loadings near the edges of the endoprosthesis cause a displacement of the liquid into relieved regions of the prosthesis so as to avoid tensile forces from occurring in the anchoring of the prosthesis to the bones.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: June 12, 1990
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Rudolf Koch, Heinrich M. F. Planck
  • Patent number: 4919677
    Abstract: The turns of the self-tapping screwthread formed on the outside surface of the metal hemispherical shell have front portions of constant thickness which extend over one third of the cross sectional length of the thread turn. The remainder of the thread turns is wedge-shaped. The shape of the thread turns facilitates the cutting in of the screw thread when the hemispherical shell is being implanted.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: April 24, 1990
    Assignee: Sulzer Brothers Limited
    Inventors: Karl-Gerhart Stubmer, Rudolf Koch, Otto Frey
  • Patent number: 4917704
    Abstract: The intervertebral prosthesis provides a replacement for a damaged disk. The prosthesis is formed as a solid body of kidney-shape and is provided with a metal mesh covering for the ingrowth of tissue. Raised parts are formed on the opposite surfaces of the kidney-shaped body impart lateral stability when in situ.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: April 17, 1990
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Rudolf Koch
  • Patent number: 4908033
    Abstract: The hip joint acetabulum uses a synthetic ring for snap-fitting the acetabulum body within the outer bowl. The ring is slit to provide for the snap fit connection and is provided with an annular lug which projects into an annular groove within the outer bowl. Recesses are also provided to permit a tool to penetrate into the acetabulum to separate the lug from the remainder of the ring to permit ready detachment of the body from the bowl.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: March 13, 1990
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Rudolf Koch
  • Patent number: 4892548
    Abstract: The external surface of the hip joint socket is provided with a contrast ring in a diametric plane of the joint head receiving cavity as well as with a metallic measuring ring in the upper surface of the socket body. The measuring ring is concentric to the axis of rotation of the body and is parallel to the plane of the contrast ring. By measuring the distance of the two metallic rings from each other in an X-ray picture, a determination can be made as to whether a displacement of the center of the spherical joint head is due in part to a cold flow of the socket material or exclusively to abrasion.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: January 9, 1990
    Assignees: Gebruder Sulzer, Protek AG
    Inventors: Gino Niederer, Otto Frey
  • Patent number: 4883492
    Abstract: The implanted is constructed with a metal base element and a plastic part which is elastically mounted on the base element and carries a metal grid structure for the ingrowth of bone tissue. The elastic mounting is provided by a prop which extends from a body portion of the plastic part into a depression in the base element. The prop is received in the depression with lateral play to not only hold the mutually facing surfaces of the base element and plastic part from each other but to permit lateral play. The floating suspension permits inevitable micromovements between the metal implant and the plastic part to be absorbed and not transmitted directly to the bone tissue which grows into the metal grid structure.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: November 28, 1989
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Rudolf Koch
  • Patent number: 4834759
    Abstract: The external bowl of the hip joint endoprosthesis is provided with a plurality of circumferential rows of projections. In addition, each projection is provided with a flank in a plane perpendicular to the axis of symmetry of the bowl and a second flank which faces the equatorial plane of the bowl which defines an angle of from 15.degree. to 45.degree. with the other flank. Upon penetration into bone tissue, the flanks displace and condense the tissue to approximately the same extent so that the axial force components acting on the flanks are approximately equal. This reduces the tendency of the endoprosthesis to be expelled from the bone.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: May 30, 1989
    Assignees: Sulzer Brothers Ltd., Protek AG
    Inventors: Lorenzo Spotorno, Otto Frey
  • Patent number: 4800639
    Abstract: The metal bone implant is constructed with thin sheets of superplastic material which are deformed into irregular contours. The sheets are welded to the solid base element of the implant and thereafter deformed outwardly under fluid presure to an irregular shape.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: January 31, 1989
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Manfred Semlitsch
  • Patent number: 4795466
    Abstract: The artificial crucial ligament is formed of a plurality of tubes which are disposed in concentric relation to define a stem. Alternating tubes extend from the stem to form two branches. The tubes are made of textile structures to impart flexibility and longitudinal elasticity to the ligament. In one embodiment, the tubes are made of a braided construction.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: January 3, 1989
    Assignee: Sulzer Brothers Limited
    Inventors: Karl-Gerhart Stuhmer, Otto Frey, Rudolf Koch
  • Patent number: 4793335
    Abstract: The agraffe is composed of a deformable metal plate having two projections, each of which is provided with a threaded eyelet. In addition, anchored pins are threaded into the respective eyelets and can be selected from a set of pins having different lengths. The deformable plate is arched between the projections and has a plurality of tacks fixably secured in place to increase adhesion of a ligament or tendon to a bone. The instrument for implanting or extracting the agraffe includes a pair of angular sector-shaped grooves of T-shaped cross-sections which are sized to engage with and under the heads of the pins in order to form a connection between the instrument and agraffe.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: December 27, 1988
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Rudolf Koch
  • Patent number: 4787909
    Abstract: The collarless shank is provided with a bore for receiving a screw in order to permit securement of the proximal region of shank to the calcar arc of a femur bone. The bore is arranged in the proximal region and extends at least approximately perpendicularly to the medial arc of the shank as well as perpendicularly to the prosthesis neck axis. The screw may be passed through a continuous bore into the calcar arc or may be passed through the calcar arc into threaded engagement in a blind bore of the shank.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: November 29, 1988
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Rudolf Koch
  • Patent number: 4777942
    Abstract: The milling instrument has a caliper which is inserted into a medullary cavity and a spindle which is linked to the caliper at an angle. The spindle carries a milling cutter as well as a guide shoe at the distal end which slides within a guideway at the distal end of the caliper. The instrument is able to cut a circular arc corresponding to the boundary line between the spongiosa and cortical tissue in the region of the calcar arc.
    Type: Grant
    Filed: September 24, 1987
    Date of Patent: October 18, 1988
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Kurt Bider
  • Patent number: 4776328
    Abstract: The bone nail is provided with a tapered portion having a barbed denticulation and a conical head which has a conical shaped depression at the proximal end for receiving a centering cone of the setting and driving instrument. The instrument carries a movable sleeve at the distal end for engaging and holding the bone nail in alignment with the centering cone during implantation. The sleeve is movable relative to the distal end of the instrument so as to disengage from the conical head of the bone nail to permit removal of the instrument and subsequent replenishment of the instrument with a fresh bone nail. The sleeve includes an expandable distal section for engaging the conical head of the bone nail and a proximal expandable section for engaging about a conical surface of the instrument.
    Type: Grant
    Filed: April 8, 1987
    Date of Patent: October 11, 1988
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Rudolf Koch
  • Patent number: 4752295
    Abstract: The metal bone implant is constructed with thin sheets of superplastic material which are deformed into irregular contours. The sheets are welded to the solid base element of the implant and thereafter deformed outwardly under fluid pressure to an irregular shape.
    Type: Grant
    Filed: January 28, 1986
    Date of Patent: June 21, 1988
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Manfred Semlitsch
  • Patent number: 4745914
    Abstract: The medullary cavity barrier is made of a metal in a rosette manner with leaves which are permanently and elastically deformable. The barrier is porous to the extent of being permeable to blood, fat and gases but impermeable to the passage of bone cement. During implantation, each outwardly extending leaf bends relative to a central core to fix the barrier within a tubular bone.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: May 24, 1988
    Assignees: Sulzer Brothers Ltd., Protek AG
    Inventors: Otto Frey, Rudolf Koch
  • Patent number: 4718914
    Abstract: The prosthesis consists of a sheet metal shell which is formed of two shell parts or half shells to form a closed hollow body. The thickness of the hollow body is in the range of from 1 to 3 millimeters. In addition, the hollow body may be provided with internal supporting elements to rigidify the shell and/or with a filling of an elastic or plastic material.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: January 12, 1988
    Assignee: Sulzer Brothers Limited
    Inventors: Otto Frey, Manfred Semlitsch
  • Patent number: 4704128
    Abstract: The anchoring shank is provided in the proximal region with a rib structure formed of alternating rib crests and troughs. The troughs extend at an angle of inclination to the longitudinal axis of the shank of from 1.degree. to 10.degree. while the rib crests extend at a greater angle of inclination of from 2.degree. to 12.degree.. The troughs and rib crests, each have cross-sectional profiles which are curvilinear while the side walls of each rib are flat. In one embodiment, the radius of curvature of the troughs increase in the distal direction while the radius of curvature of the rib crests decrease in the distal direction.
    Type: Grant
    Filed: July 18, 1984
    Date of Patent: November 3, 1987
    Assignee: Sulzer Brothers Limited
    Inventor: Otto Frey
  • Patent number: 4687488
    Abstract: The femur head prosthesis is constructed with a sleeve for mounting on the pin of an anchoring shank. The sleeve is provided with a slotted end which is of smaller diameter than the end of the pin so as to plastically deform about the pin when mounted therein. The plastic deformation permits a clamped connection which prevents rotation of the femur head prosthesis on the anchoring shank.
    Type: Grant
    Filed: September 11, 1984
    Date of Patent: August 18, 1987
    Assignee: Silver Brothers Limited
    Inventor: Otto Frey