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Mechanical tissue expander

  • US 5,882,353 A
  • Filed: 04/11/1994
  • Issued: 03/16/1999
  • Est. Priority Date: 04/11/1994
  • Status: Expired due to Fees
First Claim
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1. A removable mechanical tissue expansion appliance comprising a pair of tissue expansion plates mounted to a means for incremental expansion for separating said tissue expansion plates outwardly from each other for establishment of a cavity whereby said cavity is filled with ingrowth over time of natural tissue for permanent tissue expansion, said means for expansion comprising:

  • (a) a cylinder and at least two rods telescopically engaged to each other and to said cylinder, said cylinder having a channel and a valve in flow communication therewith;

    (b) an operating means in flow communication with said channel for incremental expansion of said rod from said cylinder; and

    (c) a spring means for actuating said valve into a sealed and closed position terminating communication between said cylinder and said operating means.

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