Kim's nasogastric tube

Claim 1

A nasogastric tube assembly comprising a flexible irrigation tube in combination with spaced smaller diameter infusion and sump tubes mounted longitudinally on the inner surface of said irrigation tube, wherein said irrigation tube includes an imperforate inner end wall and perforations spaced from said end wall, said sump tube being connected to an air supply and having an end orifice at a predetermined distance from said irrigation tube end wall, said irrigation tube being connected to vacuum producing means at its outer end, wherein said infusion tube is connected at its outer end to liquid irrigation means and having inner terminal outlet extending through and beyond said end wall a distance sufficiently spaced from said perforations whereby the irrigation liquid issuing from said outlet is not immediately sucked back into the irrigation and whereby said irrigation liquid functions to properly irrigate and dilute stomach contents before being suctioned out via the irrigation tube said tube assembly further including means for internally reinforcing the irrigation tube against radial collapse wherein said means are provided by said tubes, wherein said means comprises portions of said infusion and sump tubes are spirally coiled and in supporting abuttment with the irrigation tube.