Hearing testing probe apparatus with digital interface
Certain embodiments provide a hearing testing probe apparatus. The hearing testing probe apparatus includes a probe tube detachably coupled at a first end to a probe body and extending through a center hole in an eartip to align proximate a face of the eartip at a second end. The probe tube includes a plurality of stimulus lumens for receiving and carrying stimulus from the first end of the probe tube for output at the second end of the probe tube. The probe tube includes one or more microphone lumens for receiving and carrying one or more measured responses from the second end of the probe tube to one or more microphones at the first end of the probe tube.
1. A hearing testing probe apparatus comprising:
a plurality of drivers within a probe body, the plurality of drivers operable to generate a test stimulus from received test signals;
at least one microphone within the probe body, the at least one microphone operable to receive at least one measured response;
a plurality of stimulus channels within the probe body, the plurality of stimulus channels operable to carry the generated test stimulus from the plurality of drivers, each of the plurality of stimulus channels coupled to a separate one of the plurality of drivers;
an eartip having a center hole; and
a probe tube having a first end and a second end, the probe tube detachably coupled at the first end to the plurality of stimulus channels within the probe body, wherein the probe tube extends through the center hole of the eartip to an ear canal distal end of the eartip at the second end, the probe tube including a plurality of separate stimulus lumens corresponding to each of the plurality of stimulus channels, the plurality of separate stimulus lumens extending from the first end to the second end of the probe tube and being configured for receiving and carrying the generated test stimulus from the first end of the probe tube for output from the second end of the probe tube, and at least one separate microphone lumen extending from the first end to the second end of the probe tube and being configured for receiving and carrying the at least one measured response received at the second end of the probe tube to the at least one microphone at the first end of the probe tube.
2. The apparatus of claim 1 comprising a sealing and mating surface, wherein the probe tube is detachably coupled at the first end to the plurality of stimulus channels at the sealing and mating surface within the probe body.
3. The apparatus of claim 1 , wherein the eartip is detachably coupled to the probe body.
4. The apparatus of claim 1 , wherein the probe tube is removable from the eartip.
5. The apparatus of claim 1 , wherein the eartip is bonded directly to the probe tube to provide a single assembly.
6. The apparatus of claim 5 , wherein the single assembly is a single-use disposable component.
7. The apparatus of claim 1 , wherein the probe tube is operably attached to the hearing testing probe irrespective of the orientation about a longitudinal axis of the probe tube.
8. The apparatus of claim 1 , wherein the at least one separate microphone lumen and the plurality of separate stimulus lumens are configured symmetrically within the probe tube.
9. The apparatus of claim 8 , wherein the at least one separate microphone lumen comprises a cylindrical central lumen defined by an inner wall within the probe tube.
10. The apparatus of claim 9 , wherein the plurality of separate stimulus lumens are located circumferentially about the cylindrical central lumen, each of the plurality of separate stimulus lumens being defined by two radial walls extending from the inner wall to an outer wall within the probe tube.
11. The apparatus of claim 10 , wherein the probe tube comprises eight radial walls extending from the inner wall to the outer wall within the probe tube such that the plurality of separate stimulus lumens is eight lumens.
12. The apparatus of claim 1 , wherein the probe tube comprises an inner wall, an outer wall and a plurality of radial walls, the inner wall and the plurality of radial walls within the outer wall of the probe tube.
13. The apparatus of claim 12 , wherein a cross-sectional area of the inner wall, the outer wall and the plurality of radial walls is less than 40% of a total cross-sectional area of the probe tube.
14. The apparatus of claim 12 , wherein the thickness of the inner wall, the outer wall and the plurality of radial walls is approximately 0.012 millimeters (0.005 inches).
15. The apparatus of claim 1 , wherein the probe tube is extruded using a thermoplastic elastomer.
16. The apparatus of claim 15 , wherein a net durometer of the thermoplastic elastomer is 72 Shore A.
17. The apparatus of claim 1 comprising at least one microphone tube operably attached at a first end to the at least one microphone, and extending into the at least one separate microphone lumen when the probe tube is coupled within the probe body.
18. The apparatus of claim 1 , wherein the second end of the probe tube aligns flush to, or extends slightly beyond, the ear canal distal end of the eartip.