An improved gastrostomy or like percutaneous transport tube includes, at the end exterior to the abdominal wall, a nutrient supply coupling assembly including a mechanically simple one-way valve. A threaded cap closes the assembly, and may be replaced by a coupling member having a fitting for disconnectable...http://www.google.fr/patents/US4393873?utm_source=gb-gplus-shareBrevet US4393873 - Gastrostomy and other percutaneous transport tubes
Gastrostomy and other percutaneous transport tubes
