1. A fixation device comprising:
a base portion including a first leg, a second leg, and a groove located between the first and second legs;
a top portion extending from the base portion; and
a threaded interference device including a cannulation, the cannulation including a uniform diameter, the threads located on an outer surface of the interference device.
2. The fixation device of claim 1 wherein the groove is U-shaped.
3. A tissue repair assembly comprising:
a fixation device comprising a base portion including a first leg, a second leg, and a groove located between the first and second legs, and a cylindrical top portion extending from the base portion; and
an interference device coupled to the fixation device, the interference device including a cannulation along its length, the cannulation including a uniform diameter.
4. The tissue repair assembly of claim 3 wherein the interference device includes threads on an outer surface of the interference device.
5. The tissue repair assembly of claim 3 wherein the interference device is configured for rotary advancement into a target tissue.
6. A method of tissue repair comprising:
preparing a hole in a bone; and
fixating a soft tissue into the hole via the use of a tissue repair assembly comprising a fixation device comprising a base portion including a first leg, a second leg, and a groove located between the first and second legs, and a cylindrical top portion extending from the base portion; and an interference device coupled to the fixation device,
wherein the soft tissue is located within the groove of the fixation device when the soft tissue is fixated within the hole and the interference device includes threads on an outer surface of the interference device and a cannulation along its length, the cannulation including a uniform diameter.
7. The method of claim 6 wherein the step of fixating a soft tissue into the hole further comprises inserting the soft tissue into the hole and inserting the tissue repair assembly into the hole to fixate the soft tissue within the hole.
8. The method of claim 6 wherein the step of fixating a soft tissue into the hole further comprises inserting the soft tissue and the tissue repair assembly into the hole together.
9. The method of claim 6 wherein the threads allow for compression of the graft against the bone.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A moving armature receiver suitable for a hearing aid, comprising:
a housing including at least a sound aperture for delivering an acoustical signal in response to an input signal,
a coil tunnel including at least first and second drive coils,
a deflectable armature including an armature portion extending through the coil tunnel, and
a frequency divider adapted to split the input signal into a first audio signal of a first predetermined frequency range for the first drive coil and into a second audio signal of a second predetermined frequency range for the second drive coil.
2. A moving armature receiver according to claim 1, wherein the frequency divider includes at least one or more passive components.
3. A moving armature receiver according to claims 2, wherein the passive components comprise a capacitor.
4. A moving armature receiver according to claim 1, wherein the first and second drive coils are connected in cascade between a pair of externally accessible input terminals on the moving armature receiver housing.
5. A moving armature receiver according to claim 1, wherein respective first ends of the first and second drive coils are connected to a common node operatively connected to a first externally accessible input terminal and second ends of the first and second drive coils are connected to a second and third externally accessible input terminals, respectively, so as to form a three terminal receiver.
6. A moving armature receiver according to claim 4, wherein an inductance ratio between the first and second drive coils is between 1 and 5, preferably between 2 and 3.
7. A moving armature receiver according to claim 5, wherein an inductance ratio between the first and second drive coils is between 1 and 5, preferably between 2 and 3.
8. A moving armature receiver according to claim 1, further comprising an amplifier operatively coupled between a receiver input terminal and the frequency divider.
9. A moving armature receiver according to claim 1, further comprising an amplifier operatively coupled between an output of the frequency divider and the first or the second drive coil.
10. A moving armature receiver according to claim 9, comprising
a first amplifier operatively coupled to a first output of the frequency divider to receive the first audio signal and adapted to drive the first drive coil in the first predetermined frequency range, and
a second amplifier operatively coupled to a second output of the frequency divider to receive the second audio signal and adapted to drive the second drive coil in the second predetermined frequency range.
11. A moving armature receiver according to claim 10, wherein the frequency divider is adapted to receive and process a digitally coded input signal and generate the first and second audio signals in form of respective digitally coded audio signals and the first and second amplifiers comprise respective digital amplifiers.
12. A moving armature receiver according to claim 1, wherein the frequency divider has crossover frequency between 1 and 5 kHz.
13. A moving armature receiver according to claim 12, wherein the first predetermined frequency range is limited to substantially extend above the crossover frequency.
14. A moving armature receiver according to claim 13, wherein the second predetermined frequency range is limited to substantially extend below the crossover frequency.
15. A moving armature receiver according to claim 1, further comprising
a third drive coil, and
wherein the frequency divider is adapted to split the input signal into a third electrical audio signal of a third predetermined audio frequency range for the third drive coil.
16. A hearing aid output stage, comprising
an output stage input terminal adapted to receive a digitally coded input signal,
digital frequency divider operatively connected to the output stage input terminal and adapted to split the digitally coded audio signal into first and second audio signals of first and second predetermined frequency ranges, respectively,
a first receiver coil driver operatively connected to a first output of the digital frequency divider to receive the first audio signal,
a second receiver coil driver operatively connected to a second output of the digital frequency divider to receive the second audio signal.
17. A hearing aid output stage according to claim 16, wherein the first and second receiver coil drivers comprise a respective pair of differential output terminals.
18. Portable communication device comprising a moving armature receiver according to claim 1.
19. Hearing aid comprising an output stage according to claim 16.
20. Hearing aid comprising an output stage according to claim 17.