Medical headgear
A medical headgear is disclosed having a flexible band having an inner surface and an opposite outer surface. The band includes a non-stretch central portion having a first side and an opposite second side, a first elastic portion connected to the first side, and a second elastic portion connected to the second side.
1. A medical headgear comprising:
a flexible band having
an inner surface,
an opposite outer surface,
a non-stretch central portion having a first side and an opposite second side,
a first elastic portion connected to the first side, and
a second elastic portion connected to the second side, wherein an area of the flexible band as a whole between the first elastic portion and the second elastic portion stretches less than the first elastic portion and the second elastic portion, the first and second elastic portions are bifurcated, each having an upper strap and a corresponding lower strap extending approximately along a longitudinal axis and defining an earcup receiving space therebetween; and
an earcup positioned in each earcup receiving space, the earcup is a frequency-dependent auditory filter providing sound attenuation generally increasing as a function of frequency.
2. The medical headgear of claim 1 , wherein the flexible band further comprises a first terminating end portion connected to the first elastic portion.
3. The medical headgear of claim 2 , wherein the first terminating end portion is formed to be non-stretching.
4. The medical headgear of claim 3 , wherein the flexible band further comprises a second terminating end portion connected to the second elastic portion and formed to be non-stretching.
5. The medical headgear of claim 2 , wherein the first terminating end portion is formed to have an elastic first part, and a non-stretch second part.
6. The medical headgear of claim 2 , wherein the flexible band further comprises a first fastener positioned on a surface the first terminating end portion.
7. The medical headgear of claim 6 , wherein the flexible band further comprises a first friction pad positioned on an inner surface of the first terminating end portion when the first fastener is positioned on an outer surface.
8. The medical headgear of claim 6 , wherein the flexible band further comprises a second terminating end portion connected to the second elastic portion.
9. The medical headgear of claim 8 , wherein the flexible band further comprises a second fastener complimentary to the first fastener, and positioned on a surface of the second terminating end portion opposite to that of the first fastener.
10. The medical headgear of claim 8 , wherein the second terminating end portion is formed to be non-stretching.
11. The medical headgear of claim 8 , wherein the second terminating end portion is formed to have an elastic first part, and a non-stretch second part.
12. The medical headgear of claim 1 , wherein the upper and lower straps are elastically displaced by the earcup, and exert opposing elastic forces against the earcup to secure the earcup in the earcup receiving space.
13. The medical headgear of claim 12 , wherein the earcup is held in the earcup receiving space only by the opposing elastic forces of the upper strap and the lower strap.
14. The medical headgear of claim 13 , wherein the opposing elastic forces extend along a direction perpendicular to the longitudinal axis.
15. The medical headgear of claim 1 , wherein the earcup provides at least 12 dBA in sound reduction.
16. The medical headgear of claim 1 , wherein the earcup provides at least an 8 dB noise reduction rating (NRR).
17. The medical headgear of claim 1 , wherein the frequency-dependent auditory filter attenuates sounds between 300-500 Hz.
18. The medical headgear of claim 1 , wherein the frequency-dependent auditory filter substantially blocks sounds above 2000 Hz.
19. The medical headgear of claim 1 , wherein the earcup comprises:
a base,
a sidewall having a first sidewall edge continuously connected along a peripheral edge of the base, extending approximately orthogonally from the base, and an opposite second sidewall edge;
an ear receiving space formed from the base and sidewall; and
a flange extending radially from the second sidewall edge and having a contoured inner flange contact surface with a cross-sectional half having a peak on each of a pair of opposing ends and a valley disposed therebetween.
20. The medical headgear of claim 19 , further comprising a gasket positioned on the contoured inner flange contact surface and having a thickness of 1-6 mm.
21. The medical headgear of claim 20 , wherein the gasket has a compression force range for 25% deflection of 0.3-8 psi.
22. The medical headgear of claim 19 , wherein the earcup includes a retaining flange extending radially from the sidewall and forming a circumferentially extending band receiving space defined by the retaining flange, the flange, and the sidewall.
23. The medical headgear of claim 22 , wherein the upper strap and the lower strap are positioned in the band receiving space.
24. The medical headgear of claim 1 , wherein an applied circumferential tensile force across the band is specifically isolated against the earcups.
25. The medical headgear of claim 1 , wherein the band further comprises one or more medical device fasteners positioned on an outer surface.
26. The medical headgear of claim 1 , further comprising an eyeshade connected to the band.
27. The medical headgear of claim 1 , wherein the first and the second elastic portions extend continuously from the first and the second sides of the non-stretch central portion.
28. The medical headgear of claim 1 , wherein the earcup is optically transparent, translucent, or opaque.
29. The medical headgear of claim 1 , wherein the earcup is a frequency-dependent auditory filter providing sound attenuation that approximates the sound attenuation characteristics of a mother's gravid uterus and abdominal cavity.
30. The medical headgear of claim 1 , wherein a width of the upper strap is different than a width of the lower strap.
31. The medical headgear of claim 1 , wherein the earcup is removably positioned in the earcup receiving space and rotatable within the earcup receiving space.
32. The medical headgear of claim 1 , wherein the area of the flexible band as a whole between the first elastic portion and the second elastic portion stretches less than the first elastic portion and the second elastic portion from a relaxed state of the flexible band.
33. A medical headgear comprising:
a flexible band formed of an elastic material and having
an inner surface configured to face a user,
an opposite outer surface,
a non-stretch central portion having a first side and an opposite second side, the non-stretch central portion including a layer of silicone rubber adhered to the inner surface of the flexible band and limiting stretching of the flexible band in the non-stretch central portion,
a first elastic portion connected to the first side, and
a second elastic portion connected to the second side.
34. The medical headgear of claim 33 , wherein the layer of silicone rubber forms a friction pad positioned in the non-stretch central portion on the inner surface.
35. A medical headgear comprising:
a flexible band having
an inner surface,
an opposite outer surface,
a non-stretch central portion having a first side and an opposite second side,
a first elastic portion connected to the first side, and
a second elastic portion connected to the second side, wherein an area of the flexible band as a whole between the first elastic portion and the second elastic portion stretches less than the first elastic portion and the second elastic portion, the first and second elastic portions are bifurcated, each having an upper strap and a corresponding lower strap extending approximately along a longitudinal axis, connected at opposite ends, and defining an earcup receiving space therebetween; and
an earcup positioned in each earcup receiving space, the earcup includes a base and a sidewall continuously connected along a peripheral edge of the base and extending approximately orthogonally from the base, the upper and lower straps are elastically displaced by the sidewall and exert opposing elastic forces against the sidewall to secure the earcup in the earcup receiving space, the earcup is removably and rotatably held in the earcup receiving space only by the opposing elastic forces of the upper strap and the lower strap.
36. The medical headgear of claim 35 , wherein the sidewall has a first sidewall edge continuously connected along the peripheral edge of the base and an opposite second sidewall edge, the earcup includes an ear receiving space formed from the base and sidewall and a flange extending radially from the second sidewall edge.
37. The medical headgear of claim 36 , wherein the earcup includes a retaining flange extending radially from the sidewall and forming a circumferentially extending band receiving space defined by the retaining flange, the flange, and the sidewall.
38. The medical headgear of claim 37 , wherein the upper strap and the lower strap are positioned in the band receiving space.