Open head bone screw closure with threaded boss

  • US 6,440,132 B1
  • Filed: 05/24/2000
  • Issued: 08/27/2002
  • Est. Priority Date: 05/24/2000
  • Status: Expired due to Fees
First Claim
Patent Images

1. A closure cap for operably closing an open ended medical implant by being threadably received on a pair of spaced arms of such an implant in combination with said medical implant;

  • said implant having an open head with a pair of spaced and interiorly threaded upright arms;

    the cap comprising;

    a) a top plate having a central axis and a side to side width and a length;

    said plate being substantially greater in length during use in the direction of said arms compared to said width;

    b) a radially outward threaded cylindrical shaped boss depending from said plate and adapted to be threadably received on said arms; and

    c) a pair of flanges depending from said plate and being spaced from and on opposite sides of said boss;

    said flanges being sized and shaped to abut against the outside of the implant arms during use to maintain spacing of the arms when said boss is screwed between said arms;

    said flanges further being sized and shaped to not extend substantially in width beyond said arms so as to maintain and overall side to side low profile for the cap.

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