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Home-use applicators for non-invasively removing heat from subcutaneous lipid-rich cells via phase change coolants

  • US 9,844,461 B2
  • Filed: 01/25/2011
  • Issued: 12/19/2017
  • Est. Priority Date: 01/25/2010
  • Status: Active Grant
First Claim
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1. A cooling device for cooling subcutaneous lipid-rich cells in a human, comprising:

  • an applicator releasably positionable against human skin, the applicator including;

    a flexible, fluid-tight envelope having an entry port, an exit port, a fluid chamber, and first and second oppositely-facing internal surfaces positioned on opposite sides of the fluid chamber; and

    a porous internal structure positioned within the envelope between the entry port and the exit port, positioned directly between the first and second internal surfaces of the envelope, and positioned throughout substantially the entire fluid chamber, the internal structure including multiple layers of fibrous material positioned face-to-face such that the layers of fibrous material slidably contact one another along substantially an entire length of the porous internal structure when the flexible, fluid-tight envelope is completely filled with a pressurized fluid, the internal structure;

    (a) having a buckling strength sufficient to prevent the envelope from collapsing on itself when the outlet port is exposed to a pressure below a pressure external to the envelope, and(b) being attached to an inner surface of the envelope to at least restrict the envelope from bulging when a pressurized fluid is applied to an entry port.

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