An apparatus (10) for draining bodily debris from the rectum or urinary tract, the apparatus comprises a distal portion configured for insertion into the rectum, intestinal or urinary tract, and the apparatus further comprises: (a) a sleeve (26) in the distal portion for coupling body tissue； (b) an elastically deformable device (28) to force the distension of the sleeve (26), the elastically deformable device (28) is configured to elastically deform when the sleeve (26) is compressed, the elastic deformation generates a return force to counteract compression and force distension； (c) a chamber containing fluid (30) of variable volume depending on at least one selected from: degree of distension of the sleeve (26)； degree of deformation of the elastically deformable device (28)； characterized by a fluid transfer gate (32) to restrict fluid flow with respect to the fluid-containing chamber (30) when the chamber changes size (30), at least when the change corresponds to compression of the sleeve ( 26), where the fluid transfer gate (32) is placed in a port that has one side that communicates with the fluid-containing chamber (30) and another side that communicates with the ambient atmosphere.Un aparato (10) para drenar residuos corporales del recto o tracto urinario, el aparato comprende una porción distal configurada para la inserción en el recto, tracto intestinal o urinario, y el aparato comprende adicionalmente: (a) un manguito (26) en la porción distal para acoplar tejido corporal； (b) un dispositivo elásticamente deformable (28) para forzar la distensión del manguito (26), el dispositivo elásticamente deformable (28) se configura para deformarse elásticamente cuando el manguito (26) se comprime, la deformación elástica genera una fuerza de retorno para contrarrestar la compresión y forzar la distensión； (c) una cámara que contiene fluido (30) de volumen variable que depende de al menos uno seleccionado de: grado de distensión del manguito (26)； grado de deformac
