Ostomy appliance closure

An ostomy appliance comprising collection means for receiving effluent from the stomal opening of an ostomate;

• and a base adapted to be secured to the body of said ostomate adjacent said stomal opening and to be releasably connected to said collection means while providing fluid communication between said stomal opening and said collection means;
• said collection means comprising a liquid impervious container having an opening therein, and a first generally annular collar means symmetrically aligned about an axis extending from said opening;
• said base comprising a second generally annular collar means symmetrically aligned about said axis and adapted for insertion partially into the confines of said first collar means with a portion thereof remaining outside the confines of said first collar means, and a flexible radially extending flange disposed circumferentially about the portion of said second collar means remaining outside the confines of said first collar means, said flange being spaced axially apart from the confronting end of said first annular collar means;
• sealing means cooperatively disposed on the confronting surfaces of said first and second collar means for providing a liquid impermeable seal therebetween;
• said flange extending a sufficient radial distance beyond the outer periphery of said first annular collar means such that in response to an axial force on said flange in a direction toward said first collar means, said flange will deflect into engagement with said confronting end of said first collar means and produce a force tending to tighten the sealing action of said cooperative sealing means, and means on said flange for securing said base to the body of said ostomate.