Multiple implants and methods for the minimally invasive treatment of spinal stenosis are disclosed. According to one embodiment, a mechanical, non-fluid device is used to distend the gynecological cavity. The network connection of an attached networked device is monitored for a pre-defined trigger event. The signal processing means may further include a plurality of circuits to detect and annunciate varying layers in a media, and to track in real time the location of the projectile. The piece now left loose would be folded over the anchoring device and terminated on the roof or vertical juncture. The encoder may include a base comprising an arc length defined by a first and a second end, one or more magnetic field sensors disposed within the base between the first and second ends, and one or more polarity transition sensors also disposed within the base between the first and second ends.