Abstract: A delivery system for forming a stent in-situ may comprise an elongate shaft having a proximal end and a distal end and a lumen extending from the proximal end towards the distal end of the elongate shaft. A plurality of apertures may be positioned adjacent to a distal end region of the elongate shaft. The plurality of apertures may extend from an outer surface to an inner surface of the elongate shaft and be in fluid communication with the lumen. A port may be affixed to the proximal end of the elongate shaft and in fluid communication with the lumen.

Abstract: A pressure measuring instrument that utilizes the change of the refractive index of a gas as a function of pressure and the coherent nature of a laser light to determine the barometric pressure within an environment. As the gas pressure in a closed environment varies, the index of refraction of the gas changes. The amount of change is a function of the gas pressure. By illuminating the gas with a laser light source, causing the wavelength of the light to change, pressure can be quantified by measuring the shift in fringes (alternating light and dark bands produced when coherent light is mixed) in an interferometer.