Abstract: An ostomy pouch includes a body-side wall and a distal-side wall joined at an outer periphery and defining an interior volume comprising a collection area. The ostomy pouch also includes an inlet for receiving ostomy effluent. an outlet for egress of gas collected in the collection area. and a filter assembly covering the outlet. The ostomy pouch is configured to have an airflow rate @ 0.18 psi of greater than about 10 cc/s and less than about 40 cc/ss and a liquid (water) hold-out of greater than about 0.9 psi and less than about 6.0 psi.

Abstract: An ostomy appliance includes a filter assembly and a multi-stage filter protection. The multi-stage filter protection may include a prefilter formed from a foam and a microperforated protective panel covering the prefilter.