Patents by Inventor Mark A. Lazzeri

Mark A. Lazzeri 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: 6579503
    Abstract: An implant sterilization tray includes an integral torquing fixture for holding an implant stationary. By incorporating the fixture into the instrument tray, a large, stable base is provided for holding the implant. The user can more readily hold the implant in a stable position with the implant resting in the case and the case resting on a table.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: June 17, 2003
    Assignee: Zimmer, Inc.
    Inventors: Linggawati Tanamal, Vincent Webster, Mark A. Lazzeri, Petrus Krafft, Verlon C. Caldwell, Jr.
  • Patent number: 5391181
    Abstract: An orthopaedic holding forceps 1 for simultaneously holding a screw 60 and a screwdriver 70. The forceps 1 includes a distal tip 42 having an upper chamber 43 adapted for receiving an enlarged gripping head 72 of the screwdriver 70 and a lower chamber 44 adapted for receiving the enlarged head 61 of screw 60. The distal tip 42 also includes an interconnecting chamber 45 between the upper and lower chambers 43 and 44 adapted for receiving the distal driving tip 73 of the screwdriver 70.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: February 21, 1995
    Assignee: Zimmer, Inc.
    Inventors: Erin M. Johnson, Mark A. Lazzeri
  • Patent number: 5163964
    Abstract: An orthopaedic prosthesis for implanation in a bone, the prosthesis including a collar extending outwardly therefrom. The collar includes an access recess aligned above the bone cement when the stem is implanted with cement in bone, or aligned above the bone/implant interface when the stem is biologically affixed to the bone. The access recess may be a dimple partially extending into the collar or it may be a through hole. The dimple provides a preset drill start for a drill to be aligned therewith for drilling through the collar to form a hole therethrough. In either case, whether starting with a dimple and then forming a hole or starting directly with a through hole, the hole may be progressively enlarged by use of sequentially larger drill sizes.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: November 17, 1992
    Assignee: Zimmer, Inc.
    Inventors: Mark A. Lazzeri, Roy Y. Hori
  • Patent number: 4963155
    Abstract: A set of surgical products which includes an attachment mechanism for modular surgical products. The set includes a plurality of first components and a plurality of second components. One of the first components and one of the second components are to be selected for engagement with each other. The components each include an indexing means including a key on the first components and a corresponding slot on the second components for mating with the key. The orientations of the keys and slots vary, so that only first components having a key orientation that is similar to and aligns with the slot orientation of a second component will properly mate together and so that first components will not properly align and mate with second components having slot orientations that are different from the respective key orientation.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: October 16, 1990
    Assignee: Zimmer, Inc.
    Inventors: Mark A. Lazzeri, Roy Y. Hori, James C. Harris
  • Patent number: 4959066
    Abstract: An osteotomy guide assembly for femoral neck osteotomy includes a saddle locator assembly and a saw guide attachment. The saddle locator assembly includes a barrel-shaped locating device that locates the saddle region of the proximal femur. The barrel further includes a transverse support bar extending from the barrel. The barrel is positioned over an intramedullary shaft which is temporarily positioned in and extends from the medullary canal of the femur. A saw guide is used in conjunction with the saddle locator assembly. The saw guide is attached to the support bar by a single locking means which provides for positional adjustment of the saw guide relative to the support bar in two directions, including adjustment in the anterior-posterior direction along the transverse support bar and axially along the femur via a post which extends from the saw guide.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: September 25, 1990
    Assignee: Zimmer, Inc.
    Inventors: Harold K. Dunn, Mark A. Lazzeri, Jeffrey M. Ondrla
  • Patent number: 4813963
    Abstract: A femoral component for a hip prosthesis includes a proximal end shaped in an anatomic manner to form asymmetrical sides. In particular, a lateral side forms an acute angle with an anterior side and a medial side forms an arcuate surface.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: March 21, 1989
    Assignee: Zimmer, Inc.
    Inventors: Roy Y. Hori, Mark A. Lazzeri, Clayton R. Miller, Dale A. DeGroff, Ted L. Dock
  • Patent number: 4716894
    Abstract: An acetabular cup inserting instrument comprises a first handle and a second handle extending therefrom. The second handle is selectively rotatable about the first handle and selectively lockable in a desired position with respect to the first handle.
    Type: Grant
    Filed: August 27, 1986
    Date of Patent: January 5, 1988
    Assignee: Zimmer, Inc.
    Inventors: Mark A. Lazzeri, John E. Hamm
  • Patent number: D339634
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: September 21, 1993
    Assignee: Zimmer, Inc.
    Inventors: Roy Y. Hori, David C. Bernens, Dale A. DeGroff, Ted L. Dock, Mark A. Lazzeri, Clayton R. Miller