Sealing retainer for extended wear hearing devices
First Claim
1. A seal for retaining a hearing device within a portion of the ear canal, the seal comprising:
- a curved shell having a wall and an opening at an apex portion of the shell, the shell wall defining a cavity for retention of a hearing device component, at least a portion of the shell comprising a resilient material having sound attenuating properties;
wherein the shell wall is configured to distribute compressive forces applied to a shell perimeter such that when the shell is positioned in the ear canal, the shell wall dynamically conforms to changes in the shape of the ear canal to maintain an acoustical seal between an exterior surface of the shell and the walls of the ear canal,wherein the shell wall is configured such that a spring pressure exerted by the shell on the walls of the ear canal does not exceed the capillary venous return pressure of the vasculature of the epithelial layer of the ear canal.
2 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the invention provide seals for retaining hearing devices in the ear canal. An embodiment provides a seal for a hearing device comprising a curved shell having a wall and an opening at a shell apex portion. The shell defines a cavity for retention of a device component. The shell wall has a shape configured to distribute compressive forces applied to the shell perimeter such that when the shell is positioned in the canal, the shell wall dynamically conforms to changes in the shape of the canal to maintain an acoustical seal between a shell exterior surface and the canal walls. The shell can include an anti-microbial coating to produce a reduction in bacteria contacting the coating. Also, the shell wall can have a water vapor transmission rate to reduce moisture accumulation in the canal during periods of extended wear to reduce the incidence of infection and otitis.
93 Citations
57 Claims
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1. A seal for retaining a hearing device within a portion of the ear canal, the seal comprising:
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a curved shell having a wall and an opening at an apex portion of the shell, the shell wall defining a cavity for retention of a hearing device component, at least a portion of the shell comprising a resilient material having sound attenuating properties; wherein the shell wall is configured to distribute compressive forces applied to a shell perimeter such that when the shell is positioned in the ear canal, the shell wall dynamically conforms to changes in the shape of the ear canal to maintain an acoustical seal between an exterior surface of the shell and the walls of the ear canal, wherein the shell wall is configured such that a spring pressure exerted by the shell on the walls of the ear canal does not exceed the capillary venous return pressure of the vasculature of the epithelial layer of the ear canal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A seal for retaining a hearing device within a portion of the ear canal, the seal comprising:
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a curved shell having a wall and an opening at an apex portion of the shell, the shell wall defining a cavity for retention of a hearing device component, at least a portion of the shell comprising a resilient material having sound attenuating properties and at least a portion of the shell including an anti-microbial coating configured to produce at least about a three log reduction in colony forming units of bacteria contacting the coating; wherein the shell wall is configured to distribute compressive forces applied to a shell perimeter such that when the shell is positioned in the ear canal, the shell wall dynamically conforms to changes in the shape of the ear canal to maintain an acoustical seal between an exterior surface of the shell and the walls of the ear canal, wherein the shell wall is configured such that a spring pressure exerted by the shell on the walls of the ear canal does not exceed the capillary venous return pressure of the vasculature of the epithelial layer of the ear canal.
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37. A seal for retaining a hearing device within a portion of the ear canal, the seal comprising:
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a curved shell having a wall and an opening at an apex portion of the shell, the shell wall defining a cavity for retention of a hearing device component, at least a portion of the shell comprising a resilient material having sound attenuating properties wherein the shell wall has an in situ water vapor permeance of at least about 50 grams/day/m2/mmHg, wherein the shell wall is configured such that a spring pressure exerted by the shell on the walls of the ear canal does not exceed the capillary venous return pressure of the vasculature of the epithelial layer of the ear canal. - View Dependent Claims (38)
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39. A method for wearing a hearing device in the ear canal of a user, the method comprising:
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providing a hearing device having a retaining seal configured to retain the device in the ear canal, the seal allowing a water vapor transmission rate between a portion of the ear canal medial to the hearing device and a portion lateral to the hearing device of at least about 2.0×
10−
3 grams/day/mmHg;positioning the hearing device at a location in the ear canal; and wearing the device in the canal on a substantially continuous basis while substantially preserving an integrity of an epithelial layer in contact with the seal. - View Dependent Claims (40, 41, 42, 43, 44, 45)
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46. A seal for retaining a hearing device within a portion of the ear canal, the seal comprising:
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a curved shell having a wall and an opening at an apex portion of the shell, the shell wall defining a cavity for retention of a hearing device component, at least a portion of the shell comprising a resilient material having sound attenuating properties; wherein the shell wall is configured to distribute compressive forces applied to a shell perimeter such that when the shell is positioned in the ear canal, the shell wall dynamically conforms to changes in the shape of the ear canal to maintain an acoustical seal between an exterior surface of the shell and the walls of the ear canal, and wherein the shell is configured such that a spring pressure exerted by the shell on the walls of the ear canal does not exceed about 12 mmHg. - View Dependent Claims (47, 48)
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49. A CIC hearing aid for operation in a portion of an ear canal of a user, the hear aid comprising:
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a microphone assembly; a receiver assembly configured to supply acoustic signals received from the microphone assembly to a tympanic membrane of the user; a battery assembly for powering the hearing aid, the battery assembly electrically coupled to at least one of the microphone assembly or the receiver assembly; and a seal for retaining a hearing device within a portion of the ear canal, the seal being coupled to one of the battery assembly, the microphone assembly or the receiver assembly, wherein the seal comprises; a curved shell having a wall and an opening at an apex portion of the shell, the shell wall defining a cavity for retention of a hearing device component, at least a portion of the shell comprising a resilient material having sound attenuating properties; wherein the shell wall is configured to distribute compressive forces applied to a shell perimeter such that when the shell is positioned in the ear canal, the shell wall dynamically conforms to changes in the shape of the ear canal to maintain an acoustical seal between an exterior surface of the shell and the walls of the ear canal, and wherein the seal comprises a first seal and a second seal. - View Dependent Claims (50, 51, 52, 53, 54)
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55. A CIC hearing aid for operation in a portion of an ear canal of a user, the hear aid comprising:
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a microphone assembly; a receiver assembly configured to supply acoustic signals received from the microphone assembly to a tympanic membrane of the user; a battery assembly for powering the hearing aid, the battery assembly electrically coupled to at least one of the microphone assembly or the receiver assembly; and a seal for retaining a hearing device within a portion of the ear canal, the seal being coupled to one of the battery assembly, the microphone assembly or the receiver assembly, wherein the seal comprises; a curved shell having a wall and an opening at an apex portion of the shell, the shell wall defining a cavity for retention of a hearing device component, at least a portion of the shell comprising a resilient material having sound attenuating properties; wherein the shell wall is configured to distribute compressive forces applied to a shell perimeter such that when the shell is positioned in the ear canal, the shell wall dynamically conforms to changes in the shape of the ear canal to maintain an acoustical seal between an exterior surface of the shell and the walls of the ear canal, and wherein the hearing aid has a water vapor transmission rate configured to reduce an incidence of otitis of the ear canal. - View Dependent Claims (56, 57)
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Specification