A sewing machine for forming running-stitch seams, comprises a needle provided with an open eye and orientated with the axis substantially perpendicular to a surface for supporting the sewn item and is actuated with a reciprocating motion to pass cyclically through the supporting surface. One embodiment of the system provides a tissue anchor for holding a tissue mass within a human body. The tunable inter-stage matching circuit includes a tunable capacitor that can be varied in discrete steps to adjust impedance matching between the first and second active circuits. A rotatably positionable cover is carried by the container for covering the plurality of radially extending slots. The hub is secured to the end of the shaft by a single nut. In some embodiments, it may only be necessary for the application processor to issue an initial read request andor receive a completion confirmation from the NVM.