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Controlled release devices for therapeutic treatments of spinal discs

  • US 7,771,414 B2
  • Filed: 04/24/2006
  • Issued: 08/10/2010
  • Est. Priority Date: 04/24/2006
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a first reservoir;

    a second reservoir;

    a first valve in fluid communication with the first reservoir, the first valve configured to open based on a first tissue condition of pressure or hydration;

    a second valve in fluid communication with the second reservoir, the second valve configured to open based on a second tissue condition and wherein the second valve is configured to close based on the first tissue condition; and

    a first osmotic driver coupled to the first reservoir, wherein the first osmotic driver is configured to adjust a pressure of the first reservoir based on a condition of a tissue of pressure or hydration.

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