Abstract: An in-vivo method and apparatus is disclosed that comprises at least one sensor for determining changes in a human's an animal's body and reporting said changes outside the body. The sensor may be embedded in a sheath. The apparatus may be used to monitor chemical or physical changes in the body fluids. Alternatively, the apparatus may be used to monitor and regulate chemical or physical levels in humans and animals.

Abstract: A method for detecting body condition using nano and microdevices is disclosed. The microdevice or nanodevice is inserted into a fluid stream within a body, and used in detecting a bodily condition. The bodily condition may be myocardial infarction, stroke, sickle cell anemia, phlebitis, or a vascular aneurysm. The micro or nano device may be detected using electron paramagnetic resonance (EPR), electron spin resonance (ESR), and nuclear magnetic resonance (NMR).

Abstract: A method for inserting a microdevice or nanodevice into a body fluid stream is disclosed. The micro or nanodevice may be inserted into or external to a cell, e.g., a red blood cell. For insertion into the cell, techniques such as reversible osmotic lysis, electroporation, microfine needle injection, and particle gun injection may be used. For the external device, it may be chemically modified with an organo hydroxyl, such as poly (ethylene glycol), methoxypoly (ethylene glycol). Also, it may include a lipid anchor.

Abstract: A method and apparatus for attaching a microdevice or nanodevice to a biological member is disclosed. The biological member is one of a blood cell, lipid molecules, a liver cell, a nerve cell, a skin cell, a bone cell, a lymph cell, an endocrine cell, a circulatory cell, a muscle cell. The nanodevice or microdevice includes one of a diagnostic system, a transmitter, a receiver, a battery, a transistor, a capacitor, and a detector.