"Suitable devices include, but are not limited to, analyte measuring devices, cell transplantation devices, drug delivery devices, electrical signal delivery and measurement devices, and other devices such as those described in U.S. Pat. Nos. 4,703,756 and 4,994,167 to Shults et al.; U.S. Pat. No. 4,703,756 to Gough et al., U.S. Pat. No. 4,431,004 to Bessman et al., and Bindra et al., Anal." . . . .