Customizable respiratory mask
A customizable mask including a conforming seal is configured to utilize the physical process of granular jamming to enable it to adapt to a wide range of facial geometries. The mask may include a frame having a perimeter and a conduit connection, a conforming seal positioned along the perimeter of the frame. The conforming seal may include a sealing surface and a connecting surface, the connecting surface configured to mate with the perimeter of the frame, and the sealing surface configured to conform to a users' face. The conforming seal may further include an outer casing, granular material contained within the outer casing, and a vacuum connection. The mask may also include a similarly configured conforming frame. Further disclosed are methods of forming such masks.
1. A headgear arrangement for retaining a mask, the headgear arrangement comprising:
a granular jamming layer in one or more portions of the headgear arrangement, the granular jamming layer providing a variable stiffness portion configured to selectively transition between a decreased stiffness state and an increased stiffness state, wherein the granular jamming layer comprises a density-dependent, variable viscosity material contained in a compressible chamber, and wherein the headgear arrangement comprises a crown strap, a rear portion, an upper strap, a lower strap, an upper connection and a lower connection, the upper and lower connections being configured to connect a mask to the headgear arrangement.
2. The headgear arrangement according to claim 1 , wherein the compressible chamber is an air-tight bladder configured to maintain a vacuum therein and so as to collapse against a granular material, increase the density thereof and thereby increase the viscosity of the granular material therein and transition the variable stiffness portion to the increased stiffness state.
3. The headgear arrangement according to claim 2 , wherein the air-tight bladder includes a vacuum connection.
4. The headgear arrangement according to claim 1 , wherein the variable viscosity material is a granular material.
5. The headgear arrangement according to claim 1 , wherein the variable stiffness portion defines at least about 60-80% of the one or more portions of the headgear arrangement.
6. The headgear arrangement according to claim 1 , wherein the variable stiffness portion extends across at least about substantially an entire width of the headgear arrangement.
7. The headgear arrangement according to claim 1 , wherein the granular jamming layer is included in at least first and second granular jamming chambers.
8. The headgear arrangement according to claim 7 , wherein the first granular jamming chamber comprises a first variable viscosity material and the second granular jamming chamber comprises a second variable viscosity material, the first variable viscosity material being different from the second variable viscosity material.
9. The headgear arrangement according to claim 7 , wherein at least one of the granular jamming chambers includes a vacuum connection.
10. The headgear arrangement according to claim 1 , wherein the one or more portions of the headgear arrangement includes a granular layer casing containing the variable viscosity material.
11. The headgear arrangement according to claim 10 , wherein the granular layer casing is configured to compress the variable viscosity material when a vacuum is applied to the granular casing, to transition the granular layer into a jammed state.
12. The headgear arrangement according to claim 10 , wherein the granular layer casing comprises a flexible and/or elastic material.
13. The headgear arrangement according to claim 12 , wherein a vacuum is applied manually by pressing on the granular layer casing.
14. The headgear arrangement according to claim 10 , wherein the granular layer casing includes a vacuum connection.
15. The headgear arrangement according to claim 1 , wherein the compressible chamber is configured to maintain a vacuum therein and includes a vacuum connection.
16. The headgear arrangement according to claim 15 , wherein the vacuum connection comprises a one-way valve.
17. The headgear arrangement according to claim 1 , wherein the headgear arrangement is configured to be applied to the head of a user with the granular jamming layer in a neutral state.
18. The headgear arrangement according to claim 1 , wherein the granular jamming layer is configured to act as a sizing adjustment mechanism.
19. The headgear arrangement according to claim 1 , wherein the headgear arrangement further includes a shape sustaining layer.
20. The headgear arrangement according to claim 19 , wherein the shape sustaining layer comprises a semi-rigid material, such that the shape sustaining layer provides structural support to the headgear arrangement when the granular jamming layer is in a flexible neutral state.
21. The headgear arrangement according to claim 19 , wherein the shape sustaining layer is configured to keep the headgear arrangement in a substantially open, three-dimensional shape.
22. The headgear arrangement according to claim 19 , wherein the headgear arrangement includes a cushioning layer positioned on an inner side of the granular jamming layer and/or the shape sustaining layer.
23. The headgear arrangement according to claim 22 , wherein the cushioning layer comprises a foam, textile, elastomer, or spacer fabric.
24. The headgear arrangement according to claim 22 , wherein the cushioning layer is elastic.