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Device for the distraction of bones

  • US 5,540,687 A
  • Filed: 05/19/1994
  • Issued: 07/30/1996
  • Est. Priority Date: 05/19/1993
  • Status: Expired due to Fees
First Claim
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1. A device that is adapted for subcutaneous fixation to a patient'"'"'s skull for gradual distraction of bones in craniofacial dysostoses with early stenosis of the cranial sutures, comprising:

  • a first sleeve having internal threads, the first sleeve holding a spindle having an activating point and having an external thread that intermeshes with the internal thread of the first sleeve;

    a second sleeve, said spindle including an extension that is surrounded by, but not secured to, said second sleeve and that rotates freely within said second sleeve;

    a first mounting plate fitted to said first sleeve and being arranged for rotation relative thereto, said first mounting plate including bore holes formed therethrough and being adapted for fixation to a patient'"'"'s skull at a first location with mini-screws; and

    a holding element fitted to said second sleeve and being arranged for rotation relative thereto, wherein said holding element further comprises a second mounting plate, said second mounting plate including bore holes formed therethrough and being adapted for fixation to a patient'"'"'s skull at said second location with mini-screws, wherein said second mounting plate is arranged in a coaxial position in relation to said extension and is affixed to an end of said second sleeve as a universal joint.

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