Unidirectional flexion clip

1. A flexion coupling for a respiratory interface device, the respiratory interface device including a mask and a support assembly having at least one strap, the flexion coupling comprising:

an elongated flexure body with at least one mask coupling and at least one strap coupling;

the at least one mask coupling structured to be coupled to the mask; and

the at least one strap coupling structured to be coupled to the at least one strap.

2. The flexion coupling of claim 1 , wherein:

the flexure body includes a first material and a second material;

the flexure body first material having a first hardness;

the flexure body second material having a second hardness; and

the flexure body second material second hardness being greater than the flexure body first material first hardness.

3. The flexion coupling of claim 2 , wherein:

the flexure body first material is substantially flexible and forms an elongated web;

the flexure body second material is substantially inflexible and includes a plurality of elements; and

the flexure body second material plurality of elements being coupled to the flexure body first material web.

4. The flexion coupling of claim 3 , wherein:

the web includes at least two pockets; and

the flexure body second material plurality of elements are disposed within the flexure body first material web pockets.

5. The flexion coupling of claim 3 , wherein the flexure body second material plurality of elements are disposed in an interference pattern.

6. The flexion coupling of claim 3 , wherein:

the flexure body second material plurality of elements each have a substantially similar size and shape; and

the flexure body second material plurality of elements are spaced between about 0.5 mm and about 5.0 mm from each other.

7. The flexion coupling of claim 6 , wherein the flexure body second material plurality of elements are spaced about 1.0 mm from each other.

8. The flexion coupling of claim 6 , wherein:

the flexure body is generally planar and has an inner side and an outer side;

at least one element of the flexure body second material plurality of elements includes a stop member;

each stop member disposed on one of the inner side or outer side of the associated second material element; and

each stop member extending toward an adjacent second material element and structured to engage the adjacent second material element upon a selected amount of flexure of the flexure body.

9. The flexion coupling of claim 2 , wherein:

the flexure body is generally planar and has an inner side and an outer side; and

the flexure body including at least one curve within the plane of the flexure body.

10. The flexion coupling of claim, 2 wherein:

the first material is silicone; and

the second material is a rigid polymer.

11. A respiratory interface device comprising:

a mask and a support assembly;

the support assembly having at least one strap and at least one flexion coupling;

the flexion coupling having an elongated flexure body with at least one mask coupling and at least one strap coupling;

the at least one mask coupling structured to be coupled to the mask;

the at least one strap coupling structured to be coupled to the at least one strap;

the flexion coupling at least one mask coupling coupled to the mask; and

the flexion coupling at least one strap coupling coupled to the at least one strap.

12. The respiratory interface device of claim 11 , wherein:

the flexure body includes a first material and a second material;

the flexure body first material having a first hardness;

the flexure body second material having a second hardness; and

the flexure body second material second hardness being greater than the flexure body first material first hardness.

13. The respiratory interface device of claim 12 , wherein:

the flexure body first material is substantially flexible and forms an elongated web;

the flexure body second material is substantially inflexible and includes a plurality of elements; and

the flexure body second material plurality of elements being coupled to the flexure body first material web.

14. The respiratory interface device of claim 13 , wherein:

the web includes at least two pockets; and

the flexure body second material plurality of elements are disposed within the flexure body first material web pockets.

15. The respiratory interface device of claim 13 , wherein the flexure body second material plurality of elements are disposed in an interference pattern.

16. The respiratory interface device of claim, 13 wherein:

the flexure body second material plurality of elements each have a substantially similar size and shape; and

the flexure body second material plurality of elements are spaced between about 0.5 mm and about 5.0 mm from each other.

17. The respiratory interface device of claim 16 , wherein the flexure body second material plurality of elements are spaced about 1.0 mm from each other.

18. The respiratory interface device of claim 16 , wherein:

the flexure body is generally planar and has an inner side and an outer side;

at least one element of the flexure body second material plurality of elements includes a stop member;

each stop member disposed on one of the inner side or outer side of the associated second material element; and

each stop member extending toward an adjacent second material element and structured to engage the adjacent second material element upon a selected amount of flexure of the flexure body.

19. The respiratory interface device of claim 12 , wherein the first material is silicone; and the second material is a rigid polymer.

20. A method of using a respiratory interface device, the respiratory interface device having a mask and a support assembly, the support assembly having at least one strap and at least one flexion coupling, the flexion coupling having an elongated flexure body with at least one mask coupling and at least one strap coupling, the at least one mask coupling structured to be coupled to the mask, the at least one strap coupling structured to be coupled to the at least one strap, the flexion coupling at least one mask coupling coupled to the mask, and the flexion coupling at least one strap coupling coupled to the at least one strap, the method comprising:

positioning the mask on a user's face with the mask disposed over at least one of the user's nose or mouth;

positioning the at least one strap about the user's head; and

allowing the flexion coupling to flex in a direction generally normal to the portion of the user's face under the flexion coupling.