Patents by Inventor Franz Copf

Franz Copf 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: 6287342
    Abstract: A prosthesis part can be implanted without the use of cement. The prosthesis part comprises: a cage structure, which unites with the spongy substance of the bone; a carrier plate which is connected to the cage structure; and a carrier post for a joint part. The carrier post is supported by the carrier plate. The carrier plate has openings through which a severing instrument, such as a chisel or milling cutter, is introducable in order to separate the cage structure at least to a large extent from the cortical substance of the bone.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: September 11, 2001
    Inventors: Franz Copf, Ulrich Holz
  • Publication number: 20010018617
    Abstract: A prosthetic part includes an anchorage section that is introducable into a bone recess, the anchorage section comprising at least partially a cage structure, a plate section that extends in a lateral direction beyond the anchorage section, and a supporting section for a joint part. The plate section is provided with at least one opening or at least one indentation, through which a severing instrument is introducable to cut a connection between the anchoring section and corticalis substance of a bone. The plate section has a marginal region having a circumferential arrangement of indentations, and the at least one opening or the at least one indentation is elongated and extends parallel to an edge of the plate section.
    Type: Application
    Filed: May 10, 2001
    Publication date: August 30, 2001
    Inventors: Franz Copf, Ulrich Holz
  • Patent number: 6221110
    Abstract: A set of prostheses of different sizes comprises in each case a pair of prostheses (10, 10*), which apart from the clear external contour of their anchoring sections (20, 20*) have the same geometry. The anchoring section (20) of a first prosthesis (10) of the pair is constructed as an anchoring section with a cage structure which can be implanted in a cement-free manner, whilst the anchoring section (20*) of the second prosthesis of the pair is constructed as an anchoring section with smooth boundary surfaces which is to be cemented in place. The clear external surface of the anchoring section (20) of the prosthesis (10) which is to be implanted in a cement-free manner lies at a substantially constant distance beyond the clear external surface of the anchoring section (20*) of the prosthesis (10*) which is to be cemented in place.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: April 24, 2001
    Inventor: Franz Copf
  • Patent number: 6193760
    Abstract: A prosthesis element for a thigh prosthesis has a shaft which can be inserted into the upper end of a femur. The upper end of the shaft carries an inclined transverse support plate and a support post onto which a condyle can be fitted. The shaft has an upper proximal shaft section and a lower distal shaft section. These two shaft sections are tilted relative to one another to an acute angle. The shaft sections have substantially rectangular cross section and taper to the distal end of the shaft. One of the shaft sections comprises a lower section, which is twisted about the longitudinal axis of this shaft section.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: February 27, 2001
    Inventor: Franz Copf
  • Patent number: 5997576
    Abstract: A prosthesis which is to be incorporated with the aid of cement has a support plate (24), which projects beyond a shaft (32) on all sides. Constructed in the shaft is an axial supply duct (36) for cement and a suction aperture (56) is provided in a projecting lateral section (28) of the support plate (24). The distal boundary surface of the support plate (24) supports a plastically deformable sealing frame (52). In this manner, the space between the corticalis internal surface and the shaft external surface is closed in a sealing-tight manner and can be evacuated by a suction pump (64). As a result, the intermediate space between the corticalis and the shaft can be filled with cement in an inclusion-free manner.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: December 7, 1999
    Inventor: Franz Copf
  • Patent number: 5776202
    Abstract: A joint prothesis, which is suitable for small joints and can be implanted without using a cement, comprises two prothesis members (12, 14), each having a joint element (20, 22) made from from PE as well as an anchoring unit (16, 18) cast from titan. The anchoring unit (16, 18) each have a mounting plate (28) and at least one anchoring element (38) carried by the latter, which includes a core portion (40) and anchoring disks (42) carried by the latter. At least an end portion of the anchoring elements (38) is elastically and/or plastically deformable thus enabling the enchoring elements to conform to the contour of a cavity cut into a bone.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: July 7, 1998
    Inventors: Franz Copf, Gunter Rentsch, Peter Reill, Srecko Herman
  • Patent number: 5002579
    Abstract: An orthopedic prothesis component comprising a joint member and an anchoring member coupled thereto, said anchoring member including a plurality of elongated rod shaped anchoring posts and a support plate having an upper surface for carrying said joint member, and a lower surface configured to abut a resected surface of the bone and being connected to said anchoring posts, each of said anchoring posts containing a plurality of anchoring collars disposed at predetermined intervals along said posts, each of said collars having radial surfaces extending beyond the perimeter of said posts, whereby said collars serve to transfer loads imposed on the anchoring posts to spongiose material that is packed around said posts after the posts are positioned in the skeleton bone cavity.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: March 26, 1991
    Inventors: Franz Copf, Ulrich Holz, Savo Vesel