Tissue expander inflating due to osmotic driving forces of a shaped body of hydrogel and an aqueous solution
OwnerK. Gu/ nter Wieseinventor
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Abstract
A self-inflating tissue expander (1) serves to create cavities for the insertion of implants or to provide tissue for a self transplantation. The tissue expander itself is implanted into the tissue, where it absorbs body fluid, especially water from the surrounding tissue due to an osmotic driving force. The tissue expander (1) has a shaped body (5) made from hydrogel (2).
Claims6
A tissue expander for creating cavities for the insertion of implants or to provide tissue for a self transplantation comprising a hydrogel having a shaped body with a surface, said surface acting as a membrane disposed therearound, said hydrogel being capable of inflating due to an osmotic driving force of said hydrogel, a second selectively permeable membrane disposed around said first mentioned membrane and defining a space therebetween, and an aqueous solution disposed in said space between said membranes and generating an osmotic driving force for inflating the tissue expander.
Dependencies are inferred from the claim text.