Patent Application
20140073840
The present disclosure relates generally to an anchor or sleeve for implantation into a bone of a subject such as a human patient. The sleeve receives a component of an implantable hearing aid system such as a microactuator for transducing sound signals.
Active components of an implantable hearing aid system, such as a microactuator for transducing sound signals to convey the impression of sound to the subject receiving the implant, need to be mounted in a way that they can be retrieved and replaced, repaired or upgraded should the need arise.
An implantable receptacle for receiving a hearing aid component includes a body having a proximal portion, a distal cylindrical portion and a joining portion joining the proximal portion to the distal cylindrical portion. First flexible tines extending from an outer wall of the distal cylindrical portion in the general direction of the proximal portion are configured to engage with and lock the distal cylindrical portion to a wall of a fenestration in a bone of the patient in a permanent fashion in response to pressing the sleeve into the fenestration. Second flexible tines extending from an outer wall of the distal cylindrical portion in a direction generally tangential to the circumference of the distal cylindrical portion are configured to engage with and prevent rotation of the distal cylindrical portion within the wall of the fenestration.
The accompanying drawings, which are incorporated into and constitute a part of this specification, illustrate one or more examples of embodiments and, together with the description of example embodiments, serve to explain the principles and implementations of the embodiments.
In the drawings:
Example embodiments are described herein in the context of a microactuator for use with a fully implantable hearing aid. Those of ordinary skill in the art will realize that the following description is illustrative only and is not intended to be in any way limiting. Other embodiments will readily suggest themselves to such skilled persons having the benefit of this disclosure. Reference will now be made in detail to implementations of the example embodiments as illustrated in the accompanying drawings. The same reference indicators will be used to the extent possible throughout the drawings and the following description to refer to the same or like items.
In the interest of clarity, not all of the routine features of the implementations described herein are shown and described. It will, of course, be appreciated that in the development of any such actual implementation, numerous implementation-specific decisions must be made in order to achieve the developer's specific goals, such as compliance with application- and business-related constraints, and that these specific goals will vary from one implementation to another and from one developer to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking of engineering for those of ordinary skill in the art having the benefit of this disclosure.
Proximal portion 14 has a first cross-sectional maximum axial diameter 20 and distal cylindrical portion 16 has a second, smaller, maximum cross-sectional axial diameter 22.
A first plurality of flexible first tines 24 are formed in wall 26 of distal cylindrical portion 16, e.g., by laser cutting and then deforming the tines slightly outwardly, e.g., so that they protrude from the surface of wall 24 by approximately one thickness of the wall material. The first plurality of first tines 24 extend in the general direction 28 of the proximal portion and are configured to engage with and lock distal cylindrical portion 16 to a wall of a fenestration in a bone of a patient in a permanent fashion in response to pressing the sleeve into the fenestration.
A second plurality of flexible second tines 30 are formed in wall 26 of distal cylindrical portion 16, e.g., as described above for the first tines 24. The second plurality of second tines 30 extend in a direction 32 generally tangential to the circumference 34 of distal cylindrical portion 16 and are configured to engage with the wall of the fenestration and prevent rotation of the distal cylindrical portion 16 within the wall of the fenestration.
In one embodiment proximal portion 14 is cylindrical and includes at least one bayonet-type locking sleeve 36 configured to engage with at least one corresponding pin (not shown) extending from the hearing aid component and removably lock the hearing aid component to the receptacle.
In one embodiment the receptacle 10 is formed partially or completely of medical grade titanium for long term implantation into a human subject.
Other configurations of tines are also contemplated. For example,
Additional detail is provided in
While embodiments and applications have been shown and described, it would be apparent to those skilled in the art having the benefit of this disclosure that many more modifications than mentioned above are possible without departing from the inventive concepts disclosed herein. The invention, therefore, is not to be restricted except in the spirit of the appended claims.
This patent application may be considered related to (1) U.S. patent application Ser. No. 11/886134, filed Sep. 11, 2007 entitled “Implantable Therapeutic Appliance for the Cochlea” in the name of inventors George S. Lesinski, Armand P. Neukermans, Richard Grant and Kevyn Irving, now U.S. Pat. No. 8,192,488 issued Jun. 5, 2012; and (2) U.S. patent application Ser. No. 13/468983, filed May 10, 2012 entitled “Microactuator” in the name of Gregory N. Koskowich.
