Hearing testing probe apparatus with digital interface

1. A probe tube comprising:

an outer tube wall extending from an open proximal end to an open distal end, wherein the outer tube wall comprises a constant outer diameter;

a plurality of stimulus lumens extending within the outer tube wall from the open proximal end to the open distal end of the probe tube, the plurality of stimulus lumens operable to receive and carry a stimulus from the open proximal end of the probe tube for output at the open distal end of the probe tube; and

at least one microphone lumen extending within the outer tube wall from the open proximal end to the open distal end of the probe tube, the at least one microphone lumen operable to receive and carry at least one measured response from the open distal end of the probe tube for output at the open proximal end of the probe tube,

wherein the plurality of stimulus lumens and the at least one microphone lumen are arranged symmetrically within the outer tube wall, the outer tube wall enclosed between the open proximal end and the open distal end, and

wherein the probe tube comprises a rigidity such that a shape of the probe tube is maintained when inserted in an eartip.

2. The probe tube of claim 1 , wherein the eartip is detachably coupled to the probe tube.

3. The probe tube of claim 1 , wherein the eartip is bonded directly to the probe tube to provide a single assembly.

4. The probe tube of claim 3 , wherein the single assembly is a single-use disposable component.

5. The probe tube of claim 1 , wherein the probe tube is operably attached to a hearing testing probe irrespective of the orientation about a longitudinal axis of the probe tube.

6. The probe tube of claim 1 , wherein the outer tube wall is a uniform thickness.

7. The probe tube of claim 6 , wherein the at least one microphone lumen comprises a cylindrical central lumen defined by an inner wall within the outer tube wall.

8. The probe tube of claim 7 , wherein the plurality of stimulus lumens are located circumferentially about the cylindrical central lumen, each of the plurality of stimulus lumens being defined by two radial walls extending from the inner wall to the outer tube wall.

9. The probe tube of claim 8 , wherein the probe tube comprises eight radial walls extending from the inner wall to the outer tube wall such that the plurality of stimulus lumens is eight lumens.

10. The probe tube of claim 1 , wherein the probe tube comprises an inner wall and a plurality of radial walls, the inner wall and the plurality of radial walls within the outer tube wall.

11. The probe tube of claim 10 , wherein a cross-sectional area of the inner wall, the outer tube wall and the plurality of radial walls is less than 40% of a total cross-sectional area of the probe tube.

12. The probe tube of claim 10 , wherein the thickness of the inner wall, the outer tube wall and the plurality of radial walls is approximately 0.012 millimeters (0.005 inches).

13. The probe tube of claim 1 , wherein the probe tube is extruded using a thermoplastic elastomer.

14. The probe tube of claim 13 , wherein a net durometer of the thermoplastic elastomer is 72 Shore A.

15. The probe tube of claim 1 , wherein the eartip is coupled to the probe tube, and wherein the open distal end of the probe tube aligns flush to, or extends slightly beyond, an ear canal end of the eartip.

16. A hearing testing probe apparatus comprising:

a probe tube comprising an outer tube wall extending from an open proximal end to an open distal end, the outer tube wall enclosed between the open proximal end and the open distal end, wherein the outer tube wall comprises a constant outer diameter, the probe tube detachably coupled at the open proximal end to a probe body and extending through a center hole in an eartip to align the open distal end proximate a face of the eartip, wherein the probe tube comprises a rigidity such that a shape of the probe tube is maintained when inserted in the eartip, the probe tube comprising:

a plurality of stimulus lumens extending within the outer tube wall from the open proximal end to the open distal end of the probe tube, the plurality of stimulus lumens operable to receive a stimulus from at least one receiver at the open proximal end and to carry the stimulus from the open proximal end of the probe tube for output at the open distal end of the probe tube, and

at least one microphone lumen extending within the outer tube wall from the open proximal end to the open distal end of the probe tube, the at least one microphone lumen operable to receive at least one measured response at the open distal end and to carry the at least one measured response from the open distal end of the probe tube to at least one microphone at the open proximal end of the probe tube.

17. The apparatus of claim 16 , wherein the probe tube is operably attached to the hearing testing probe irrespective of the orientation about a longitudinal axis of the probe tube.

18. The apparatus of claim 16 , wherein the probe tube is fixably attached to the eartip to form a single entity, wherein the single entity is a single-use disposable component.

19. The apparatus of claim 16 , wherein the at least one microphone lumen is a central receiving lumen and the plurality of stimulus lumens are located peripherally to the at least one microphone lumen, the at least one microphone lumen operable to form at least one distinct receiving channel for receiving the at least one measured response, and the plurality of stimulus lumens operable to form at least one transmitting channel for transmitting the stimulus.

20. The apparatus of claim 16 , wherein the probe tube terminates flush at, or extends slightly beyond, an ear canal end of the eartip.

21. The apparatus of claim 16 , wherein the outer tube wall is a uniform thickness.

22. The apparatus of claim 16 , wherein the plurality of stimulus lumens and the at least one microphone lumen are arranged symmetrically within the outer tube wall.