| 摘要 |
PCT No. PCT/AU90/00569 Sec. 371 Date May 29, 1992 Sec. 102(e) Date May 29, 1992 PCT Filed Nov. 27, 1990 PCT Pub. No. WO91/08012 PCT Pub. Date Jun. 13, 1991.An endoscopic mouth guard having a smoothly contoured, waisted tube merging into a peripheral flange at the front end of said tube, a manifold integral with the front face of said flange defining a closed ended, transverse distribution duct, and two open ended, upwardly directed branch ducts ending, in use, closely below the nostrils of a patient fitted with the guard, two further, open ended branch ducts extending rearwardly from said distributor duct into the bore of said tube, and a laterally and rearwardly directed tapered spigot on said manifold, defining an extension of said distributor duct, adapted to enter the bore of a gas supply tube. The finished guard is a single article of plastics material having a smooth hard surface. |
