Cushion for mask system
View Patent ↗A mask system for use between a patient and a device to deliver a breathable gas to the patient includes a frame including a channel and a cushion provided to the frame. The cushion includes an end portion that is inserted and retained within the channel. The frame includes a recess that communicates with the channel and a hole that connects the recess to a frame exterior. The hole and recess provide an exit route for air contained within the channel.
1. A mask system for use between a patient and a device to deliver a breathable gas to the patient, the mask system comprising:
a frame including a channel; and
a cushion provided to the frame, the cushion including an end portion that is inserted and retained within the channel,
wherein the frame includes a recess that communicates with the channel and a hole that connects the recess to a frame exterior, the hole and recess providing an exit route for air contained within the channel.
2. The mask system according to claim 1 , wherein the end portion is tapered and includes a sealing lip, the tapered end portion adapted to be inserted and retained within a channel.
3. The mask system according to claim 2 , wherein the sealing lip provides a seal around the perimeter of the cushion.
4. The mask system according to claim 1 , wherein the hole is tapered.
5. The mask system according to claim 1 , wherein the hole includes an exit diameter in a range of about 1.0-1.3 mm.
6. The mask system according to claim 1 , wherein the frame includes a bead within the channel positioned to interact with the end portion to retain the cushion within the channel.
7. The mask system according to claim 1 , wherein the cushion is a mouth cushion adapted to form a seal around an exterior of a patient's mouth.
8. The mask system according to claim 7 , wherein the mouth cushion includes a side wall adapted to support a pair of nasal prongs.
9. The mask system according to claim 1 , wherein the frame includes a main body having a side frame portion on each lateral side thereof.
10. The mask system according to claim 9 , wherein the main body includes an aperture and a flanged collar member adapted to engage an elbow.
11. The mask system according to claim 9 , wherein each side frame portion includes a headgear attachment point to attach a headgear assembly.
12. The mask system according to claim 11 , wherein each side frame portion includes upper and lower anchors to attach the headgear assembly.