Tissue expander inflating due to osmotic driving forces of a shaped body of hydrogel and an aqueous solution

摘要

PCT No. PCT/EP93/01490 Sec. 371 Date Feb. 2, 1994 Sec. 102(e) Date Feb. 2, 1994 PCT Filed Jun. 12, 1993 PCT Pub. No. WO93/25266 PCT Pub. Date Dec. 23, 1993.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).