Method and system for creating non-occluding earpieces

Patent metadata

Field	Value
Publication number	US-10021496-B2
Application number	US-27828507-A
Country	US
Kind code	B2
Filing date	Feb 9, 2007
Priority date	Feb 10, 2006
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

The present invention provides a method for computer-controlled creation of non-occluding earpieces with tube bore. The non-occluding earpieces are created based on a three-dimensional computer model of at least part of the outer ear and at least part of the auditory canal. The said model is created by a laser scanner, in the ear scanner or by other means. The said three-dimensional computer model is virtually modified to create the non-occluding earpieces and the tube bore. Finally the physical non-occluding earpieces are manufactured using rapid prototyping equipment.

First claim

The invention claimed is:

1. A method for producing a computer-generated non-occluding earpiece model, the method comprising:
obtaining a scan of a conchal bowl in an outer ear and an auditory canal adjacent to the conchal bowl or of an impression of the conchal bowl in the outer ear and the auditory canal;
creating a three-dimensional occlusive computer model of at least a part of the conchal bowl and at least a part of the auditory canal from the scan, said three-dimensional occlusive computer model substantially conforming to a shape of the part of the conchal bowl or the part of the auditory canal or both, said model further including a feature to enable cooperation with electronics located outside of the ear to aid hearing without occluding the conchal bowl and the auditory canal;
selecting an area of interest of the three-dimensional model resulting in an earpiece model having a non-occluding conchal bowl part and a non-occluding auditory canal part, the area of interest including a portion of the conchal bowl part and a portion of the auditory canal part of the three-dimensional model, the area of interest of the three-dimensional model being selected so as to create an earpiece model that is substantially open in the conchal bowl portion and in the auditory canal part to ensure that the earpiece model is non-occlusive; and
removing the portion of the three-dimensional occlusive computer model that does not include the area of interest, thereby obtaining an earpiece computer model for a hearing aid having a non-occluding conchal bowl part, a non-occluding canal area part, and a feature to enable cooperation with electronics located outside of the ear to aid hearing without occluding the conchal bowl and the auditory canal.

2. The method according to claim 1 , wherein at least a part of the canal part is cut to obtain a trimmed surface before selecting the area of interest.

3. The method according to claim 2 , wherein the trimmed surface corresponds to the canal area.

4. The method according to claim 1 , wherein the method further comprises creating a tube bore in the non-occluding earpiece model.

5. The method according to claim 4 , wherein the tube bore is provided by applying a model of a tube to the non-occluding canal area.

6. The method according to claim 5 , wherein a bore in the tube bore is provided by subtracting a fixed shape from the model of the tube.

7. The method according to claim 4 , wherein the tube bore is created by defining a control path through the canal part of the occlusive model, and generating a tube bore shape from said control path.

8. The method according to claim 4 , wherein the tube bore is generated by boolean addition and/or subtraction from the canal part of the occlusive model to obtain the tube bore.

9. The method according to claim 4 , wherein the tube bore is generated from the canal part of the occlusive model.

10. The method according to claim 4 , wherein the tube bore is generated by applying a model of a tube to the non-occluding canal area and subsequently modifying the shape of the tube model by defining a control path through the canal part of the occlusive model, and generating a tube bore shape from said control path.

11. The method according to claim 1 , said method further comprising defining a fixed shape to be applied to the non-occluding earpiece model for fixing a tube from a hearing aid device.

12. The method according to claim 1 , wherein the step of selecting an area of interest of the three-dimensional model, also results in an earpiece model having a non-occluding conchal bowl part.

13. A method for producing a non-occluding earpiece for a behind-the-ear hearing aid, said method comprising providing a prototyping machine, and providing a non-occluding earpiece model as produced by the method of claim 1 , and producing on said prototyping machine a non-occluding earpiece from said non-occluding earpiece model.

14. The method according to claim 1 , wherein the outer ear portion includes a ring of material for contacting the conchal bowl of the ear.

15. The method according to claim 1 , wherein the feature enables connection with a behind-the-ear hearing aid.

16. A nontransitory computer readable medium, said nontransitory computer readable medium having a computer program stored thereon, said program for producing a non-occluding earpiece model comprising program code for conducting the steps of:
obtaining a scan of a conchal bowl in an outer ear and an auditory canal adjacent to the conchal bowl or of an impression of the conchal bowl in the outer ear and the auditory canal;
creating a three-dimensional occlusive computer model of at least a part of the conchal bowl and at least a part of the auditory canal from the scan, said three-dimensional occlusive computer model substantially conforming to a shape of the part of the conchal bowl or the part of the auditory canal or both, said model further including a feature to enable cooperation with electronics located outside of the ear to aid hearing without occluding the conchal bowl and the auditory canal;
selecting an area of interest of the three-dimensional model resulting in an earpiece model having a non-occluding conchal bowl part and a non-occluding auditory canal part, the area of interest including a portion of the conchal bowl part and a portion of the auditory canal part of the three-dimensional model, the area of interest of the three-dimensional model being selected so as to create an earpiece model that is substantially open in the conchal bowl portion and in the auditory canal part to ensure that the earpiece model is non-occlusive; and
removing the portion of the three-dimensional occlusive computer model that does not include the area of interest, thereby obtaining an earpiece computer model for a hearing aid having a non-occluding conchal bowl part, a non-occluding canal area part, and a feature to enable cooperation with electronics located outside of the ear to aid hearing without occluding the conchal bowl and the auditory canal.

17. A system for producing a non-occluding earpiece for a hearing aid, said system comprising:
a nontransitory computer readable memory having one or more computer instructions stored thereon, and
a computer controllable prototyping machine, said prototyping machine being connected to the system to form an earpiece for a hearing aid from the non-occluding earpiece model generated by the system, and
said instructions comprising instructions for conducting the steps of:
obtaining a scan of a conchal bowl in an outer ear and an auditory canal adjacent to the conchal bowl or of an impression of the conchal bowl in the outer ear and the auditory canal;
creating a three-dimensional occlusive computer model of at least a part of the conchal bowl and at least a part of the auditory canal from the scan, said three-dimensional occlusive computer model substantially conforming to a shape of the part of the conchal bowl or the part of the auditory canal or both, said model further including a feature to enable cooperation with electronics located outside of the ear to aid hearing without occluding the conchal bowl and the auditory canal;
selecting an area of interest of the three-dimensional model resulting in an earpiece model having a non-occluding conchal bowl part and a non-occluding auditory canal part, the area of interest including a portion of the conchal bowl part and a portion of the auditory canal part of the three-dimensional model, the area of interest of the three-dimensional model being selected so as to create an earpi

Assignees

• Clausen Tais
• Fisker Rune
• Deichmann Nikolaj
• Fischer David
• 3Shape As

Inventors

• Clausen Tais
• Fisker Rune
• Deichmann Nikolaj
• Fischer David

Classifications

• B33Y50/00

  Data acquisition or data processing for additive manufacturing · CPC title

• H04R2225/77

  Design aspects, e.g. CAD, of hearing aid tips, moulds or housings · CPC title

• H04R1/1016

  Earpieces of the intra-aural type · CPC title

• G06F30/00

  Computer-aided design [CAD] · CPC title

• H04R2460/11

  Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion · CPC title