×

Compatible internal bone fixation plate

  • US 4,403,607 A
  • Filed: 05/09/1980
  • Issued: 09/13/1983
  • Est. Priority Date: 05/09/1980
  • Status: Expired due to Term
First Claim
Patent Images

1. A compatible internal fixation plate for diaphyseal bone fractures comprising:

  • a hollow elongated flat metal plate formed of biologically inert tubular material;

    said plate being provided with a plurality of transverse openings at each end for securing the plate to the bone on both sides of the fracture;

    said plate including means for providing high bending and torsional stiffness, but relatively low axial stiffness relative to a conventional solid metal fixation plate, said means including a continuous outer tubular metallic member, extending integrally between the transverse openings at the two ends of said plate;

    to form a hollow metal-free central zone; and

    means for precluding bone ingrowth into the metal-free central zone of said plate;

    whereby bending and torsional rigidity is provided for early fracture healing, and the low axial stiffness of the plate inhibits osteoporosis and bone weakening during later stages of bone remodeling before the plate is removed.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×