| 摘要 |
<p>A two-piece ostomy appliance (10) comprising a pouch component (11) and a faceplate component (12). The faceplate component has disposed thereon a dual-state, bistable coupling ring (20) with a latching member (25) for sealingly engaging the periphery of an opening in the pouch component. The coupling ring has an annular base (21) defining a central opening and a contact face thereon surrounding the central opening. An annular collar (23) extends from the base and a bistable latching member is joined to the collar along an annular hinge line (28), the latching member providing a contact surface and being pivotable about said hinge line. The latching member pivots about the hinge line between a stable, substantially untensioned first state wherein the latching member projects generally axially away from the collar and a stable, tensioned second state wherein the latching member extends in a reverse directon towards the annular base with said contact face of the latching member being positioned for tight engagement with the annular base's contact face or with the annular periphery of the pouch component clamped between the base and the latching member. <IMAGE></p> |
