Abstract: A first medical device for obstructive sleep apnea therapy includes therapy delivery circuitry coupled to a first set of electrodes implantable proximate to a first hypoglossal nerve within a tongue of the patient and configured to deliver a first electrical stimulation signal to the first hypoglossal nerve that causes the tongue of the patient to advance and includes information to communicate to a second medical device implantable within the head or neck of the patient and coupled to a second set of electrodes implantable proximate to a second hypoglossal nerve within the tongue of the patient; and sensing circuitry coupled to the first set of electrodes and configured to receive a second electrical stimulation signal, delivered to the second hypoglossal nerve by the second medical device, that includes information that the second medical device communicates to the first medical device.

Abstract: A process for porting air inflated flexible resin impregnated cured in place liner by pulling without loss of pressure is provided. A selectively openable bulkhead fitting is installed at the pull-in end. The filling may be installed in the end of a pull-in liner; on a porting sleeve or secured to an inflated pulled in or inverted liner. A port is formed through the bulkhead fitting by cutting a hole through the valve assembly. A steam fitting with an exhaust hose is coupled to the bulkhead fitting while maintaining pressure in the inflation bladder. Steam for curing the resin is then introduced into the inversion apparatus to cure the resin and is exhausted through the exhaust hose.

Abstract: An apparatus for installing a liner within a service pipe having an access end and a terminal end wherein the terminal end is transversely connected to a main pipe for allowing fluid to flow therebetween. The apparatus includes a flexible tubular member having a leading end and a trailing end. The leading end includes a flexible retainer secured thereto for being positioned within the main pipe proximate the service pipe terminal end. The flexible tubular member is impregnated with a thermosetting resin which cures after the flexible tubular member is positioned within the service pipe. Guiding and forcing members are provided for positioning the flexible tubular member within the service pipe such that the flexible retainer is seated within the main pipe proximate the service pipe terminal end and the trailing end is positioned proximate the service pipe access end.