A medicated patch for extracting beewasp sting toxins from the human skin includes a flexible substrate layer that has a planar adhesive surface and an annular shape. A PI correction circuit performs an error correction process on a PI and causes a completion signal to go high whenever processing of 182 bytes of data is completed. The execution of derivative product transaction may be contingent on the existence of an appropriate hedge transaction. In some aspects, the blade segments are in a circumferential alignment, and the stator includes an alignment element operatively arranged to control the circumferential alignment, for example, in response to pressure from fluid in the stator upon the blade. The bar type patterns has an overhang at the first end thereof.