Abstract: A porous silicon implant impregnated with a beneficial substance, such as a micromineral required for healthy physiology, is implanted subcutaneously and is entirely corroded away over the following months/year to release the beneficial substance in a controlled manner. In a second embodiment the implant may have a large number of holes which contain beneficial substance and which are closed by bio-erodible doors of different thickness so as to stagger the release of the beneficial substance over time as the doors are breached.
Type:
Grant
Filed:
December 4, 2013
Date of Patent:
December 8, 2015
Assignee:
pSiMedica Limited, Inc.
Inventors:
Leigh T. Canham, Christopher P. Barrett, Timothy I. Cox, Peter J. Wright, Andrew P. Bowditch