Dual path implantable hearing assistance device

• US 6,010,532 A
• Filed: 11/25/1996
• Issued: 01/04/2000
• Est. Priority Date: 11/25/1996
• Status: Expired due to Term

• Current Assignee: Envoy Medical Corporation
• Original Assignee: St Croix Medical Incorporated
• Inventors: Kroll, Kai, Kennedy, Joel A.
• Primary Examiner(s): Milano, Michael J.
• Application Number:
  US08/755,180
• Time in Patent Office: 1,135 Days
• Field of Search: 623/10
• US Class Current: 623/10
• CPC Class Codes: H04R 25/505 using digital signal processing
• CPC Class Codes: H04R 25/554 using a wireless connection, e.g. between microphone and amplifier or using Tcoils
• CPC Class Codes: H04R 25/606 acting directly on the eardrum, the ossicles or the skull, e.g. mastoid, tooth, maxillary or mandibular bone, or mechanically stimulating the cochlea, e.g. at the oval window

Abstract

A dual path implantable hearing assistance system transduces sound vibrations of the malleus in one or both ears into electrical signals, processes the electrical signals to provide one or more resulting output electrical signals, and transduces the output signals into mechanical vibrations provided to the stapes in one or both ears. Communication between an electronics device and at least one ear is either wireless or through subcutaneous lead wires. The system may have two input paths and two output paths, programmable to provide the function of two separate single path systems, but capable of combining the signals such as by weighted summing. The system may have also have two input paths and one output path; or, one input path and two output paths; or, one input path and one output path, each associated with a different ear.

Claims

1. A hearing assist system at least partially implantable in a middle ear, the system comprising:

a first-ear input transducer, proportioned for disposition within a first ear of a person, for transducing received mechanical sound vibrations within the first ear into an electrical first-ear input signal;

a second-ear output transducer, proportioned for disposition within a second ear of the person, for transducing an electrical second-ear output signal into mechanical sound vibrations within the second ear; and

an electronics unit electrically coupled to the first-ear input transducer for receiving and processing the first-ear input signal, and electrically coupled to the second-ear output transducer for providing the electrical second-ear output signal.

2. The system of claim 1, wherein the first-ear input transducer is mechanically coupled to a malleus bone of the first ear and the second-ear output transducer is mechanically coupled to a stapes bone of the second ear.

3. The system of claim 1, further comprising a second-ear input transducer, proportioned for disposition within the second ear of the person, for transducing received mechanical sound vibrations within the second ear into an electrical second-ear input signal, and wherein the electronics unit is electrically coupled to the second-ear input transducer for receiving and processing the second-ear input signal.

4. The system of claim 3, wherein the second-ear input transducer is mechanically coupled to a malleus bone of the second ear.

5. The system of claim 3, wherein the first-ear output signal is produced from each of the first-ear and second-ear input signals by the electronics unit.

6. The system of claim 1, further comprising a first-ear output transducer, proportioned for disposition within the first ear of the person, for transducing an electrical first-ear output signal into mechanical sound vibrations within the first ear, and wherein the electronics unit is electrically coupled for providing the first-ear output signal to the first-ear output transducer.

7. The system of claim 6, wherein the first-ear output transducer is mechanically coupled to a stapes bone of the first ear.

8. The system of claim 6, wherein the electrical first-ear and second-ear output signals are produced from the first-ear input signal by the electronics unit.

9. The system of claim 6, wherein the electrical first-ear and second-ear output signals are produced from the second-ear input signal by the electronics unit.

10. A hearing assist system at least partially implantable in a middle ear, the system comprising:

a first-ear input transducer disposed within a first ear of a person for transducing received mechanical sound vibrations within the first ear into a corresponding electrical first-ear input signal;

a second-ear input transducer disposed within a second ear of the person for transducing received mechanical sound vibrations within the second ear into a corresponding electrical second-ear input signal;

a first-ear output transducer disposed within the first ear for transducing an electrical first-ear output signal into mechanical sound vibrations;

a second-ear output transducer disposed within the second ear for transducing an electrical second-ear output signal into mechanical sound vibrations;

an electronic device having first-ear and second-ear inputs for receiving respective electrical first-ear and second-ear input signals, and capable of processing the electrical first-ear and second-ear input signals and providing resulting respective first-ear and second-ear output signals at first-ear and second-ear outputs to the first-ear and second-ear output transducers, said communication of each of the second-ear input and output signals between the device and respective second-ear input and output transducers includes wireless communication.

11. The system of claim 10, further comprising:

a first transmitter/receiver, electrically coupled to each of the second-ear input and second-ear outputs of the device; and

a second transmitter/receiver electrically coupled to each of the second-ear input and second-ear output transducers, and electromagnetically coupled to the first transmitter/receiver.

12. A dual path implantable hearing assistance device adapted to be implantable in a middle ear, the device comprising:

a first-ear input transducer adapted for installation in a middle ear section of a patient'"'"'s first-ear;

a second-ear output transducer adapted for installation in a middle ear section of a patient'"'"'s second-ear; and

an electronics unit in electromagnetic communication with the first-ear input transducer and the second-ear output transducer,

wherein,

a first-ear input signal is provided by the first-ear input transducer,

the first-ear input signal is processed by the electronics unit into a second-ear output signal, and

the second-ear output signal is provided to the output transducer.

13. The device of claim 12, further comprising:

a second-ear input transducer adapted for installation in a second middle ear;

means for transmitting a second-ear input signal from the second-ear input transducer to the electronics unit in response to sound vibrations in the second-ear; and

means for processing the second-ear input signal by the electronics unit into a second-ear output signal.

14. The device of claim 13, further comprising:

a first-ear output transducer adapted for installation in the first middle ear; and

means for transmitting a first-ear output signal from the electronics unit to the first-ear output transducer, thereby producing auditory vibrations in the first middle ear.

15. The device of claim 14, further comprising means for transmitting the first-ear output signal in response to the first-ear input signal.

16. The device of claim 14, further comprising means for transmitting the second-ear output signal in response to the second-ear input signal.

17. The device of claim 14, wherein at least one of said means for transmitting the first-ear output signal and means for transmitting the second-ear output signal is in response to a combination of the first-ear and second-ear input signals.

18. The device of claim 14, wherein at least one of said means for transmitting the first-ear output signals and means for transmitting the second-ear output signals is in response to a weighted sum of the first-ear and second-ear input signals.

19. The device of claim 14, wherein the electronics unit is electrically coupled to each of the first-ear input and output transducers.

20. The device of claim 19, further comprising a first transmitter/receiver electrically coupled to the electronics unit and a second transmitter/receiver electrically coupled to at least one of the second-ear input transducer and the second-ear output transducer, wherein at least one of said second-ear input transducer and said second-ear output transducer is in wireless communication with the receiver/transmitter.

21. The device of claim 14, wherein said first-ear output signal transmitting means is carried out in a device electrically coupled to the first-ear input transducer.

22. The device of claim 21, further comprising means for wireless communication between a first transmitter/receiver electrically coupled to the device and a second transmitter/receiver electrically coupled to at least one of the second-ear input or output transducers, wherein the second-ear input signal is received and the second-ear output signal is provided.