Abstract:
An arrangement for coupling at least partially a hearing device implantable in a middle ear or a passive auditory ossicles prosthesis on an ascending bracket of a human ossicle chain, the arrangement has a body, and a clip provided on the body and formed so as to automatically mount on an ascending bracket.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    The present invention relates to an arrangement for coupling a hearing implant which is at least partially implantable in a middle ear or a passive auditory ossicles prosthesis on an ascending bracket of a human ossicle chain.  
           [0002]    Nowadays both active and passive hearing implants are mounted on an auditory ossicles by mounting elements formed as a sleeve and subsequently the mounting element is fixed by a crimping tool on the auditory ossicle permanently. Such a mounting method is disclosed for example in the German patent document DE 197 38 587. These known mounting possibilities for middle ear prostheses or hearing devices are however relatively expensive. After fitting the sleeve-shaped mounting element on the auditory ossicles, a crimping tool must be exactly placed to provide a position-accurate and reliable mounting of the implant.  
         SUMMARY OF THE INVENTION  
         [0003]    Accordingly, it is an object of the present invention to provide an arrangement for coupling a hearing implant, which makes possible mounting of both active and passive hearing implants in a simple manner and with a guarantee of reliable hold of the prosthesis.  
           [0004]    In keeping with these objects and with others which will become apparent hereinafter, one feature of present invention resides, briefly stated, in an arrangement for coupling a hearing device which is implantable at least partially in a middle ear, or a passive auditory ossicle prosthesis on an ascending bracket of a human ossicle chain, which in accordance with the present invention has a clip mountable automatically on the ascending bracket.  
           [0005]    When the arrangement is provided with the clamp, then the active or passive hearing implant can be mounted without the use of tool, fast and reliable on the ascending bracket. The clip can have spring tongs which are axially displaceable over the ascending bracket. An especially reliable hold is guaranteed when the clip engages around the ascending bracket at four sides.  
           [0006]    Since the sides at the relative position of the auditory ossicles for each person is different, it is advantageous when the clip has a movable connection to a hearing device or an auditory ossicles prosthesis. Then an adjustment of the prosthesis or the hearing device of the corresponding characteristics in the middle ear is possible in situ. The movable connection can be performed for example by a shaft of a flexible material. It is however possible to provide a spherical joint between the clip and the hearing device or the prosthesis.  
           [0007]    In accordance with another feature of the present invention, the clip can be formed of one piece of the hearing device or the auditory ossicles prosthesis for a connection with a flexible shaft. It forms in this case one end of the prosthesis or the hearing device implant.  
           [0008]    The clip connection, whether in form of a flexible shaft or a spherical joint, can be mounted by means of a plug or clamp connection on the hearing device or the auditory ossicles prosthesis.  
           [0009]    The whole coupling arrangement can be composed of a biocompatible material, such as titanium or a titanium alloy, to prevent rejection reactions of the body.  
       
    
    
       [0010]    The novel features which are considered as characteristic for the present invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.  
       BRIEF DESCRIPTION OF THE DRAWINGS  
       [0011]    [0011]FIG. 1 is a perspective view of a coupling device in accordance with the first embodiment of the present invention;  
         [0012]    [0012]FIG. 2 is a perspective view of a coupling device in accordance with the second embodiment of the present invention;  
         [0013]    [0013]FIG. 3 is a perspective view of a coupling device in accordance with the third embodiment of the present invention;  
         [0014]    [0014]FIG. 4 is a perspective view of a coupling device in accordance with the fourth embodiment of the present invention;  
         [0015]    [0015]FIG. 5 is a perspective view of a coupling arrangement which is formed of one piece with a prosthesis; and  
         [0016]    [0016]FIG. 6 is a perspective view of a coupling arrangement with an auditory ossicles prosthesis.  
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0017]    [0017]FIG. 1 is a view showing a first coupling arrangement  10  for coupling of a not shown hearing implant on an ascending bracket  11  of a human ossicles chain. The coupling arrangement  10  has a clip  12  provided on its lower end and having several springy tongs  13 . The tongs are displaceable in an axial direction over the ascending bracket  11  and engage around the ascending bracket  11  from four sides. A shaft  14  extends from the clip  12  and is composed of a flexible material. It transits into a plug sleeve  15 . The actuator of an active hearing implant or the shaft of an auditory ossicles prosthesis is for example anchorable in the plug sleeve  15 . The flexible shaft  14  makes possible an adaptation of the position of the total prosthesis to the specific anatomical characteristics of the patient.  
         [0018]    [0018]FIG. 2 shows a coupling device  20 . On its lower end it also has a springy clip  21  of the same construction as the clip  12  in FIG. 1. On the upper end it also has a plug sleeve  22  which corresponds in its appearance to the sleeve  15  of FIG. 1. The coupling device  20  is different from the coupling device  10  by a movable connection between the sleeve  22  and the clip  21 . This movable connection is performed here not by the flexible shaft, but instead by a spherical joint  23 .  
         [0019]    [0019]FIG. 3 shows a coupling device  30  which is similar to the coupling device  10  of FIG. 1. Here however a springy clip  31  is provided which has the same construction as the clip  10  of FIG. 1. A shaft  32  of a flexible material extends from the clip. In the coupling device  30  the coupling on the hearing implant is not performed by a plug sleeve, but instead by clamps  33  and the clamping action of these clamps.  
         [0020]    [0020]FIG. 4 shows a coupling device  40  which substantially corresponds to the coupling device shown in FIG. 3. Here however the flexible shaft  32  is replaced by a spherical joint  42 . The mounting of the coupling device on the prosthesis is performed here also by clamps  43 .  
         [0021]    [0021]FIG. 5 shows a coupling device  50  for an auditory ossicles prosthesis  41 . In this case it is composed strictly of the springy clip of the same type as the clip  12  of FIG. 1. A shaft  52  which is connected to the clip  50  forms simultaneously the shaft of the prosthesis  51  and can be composed for example of a flexible material. On the opposite end of the shaft  52 , a grating plate  53  is arranged. It is brought in abutment against the eardrum skin.  
         [0022]    A completely similar coupling device  60  for a prosthesis  61  is shown in FIG. 6. Here however both the shaft  62  of the coupling device  60  and the shaft  63  of the prosthesis  61  are composed of a rigid material. In order however to provide a flexible adjustment of the prosthesis  61  to the anatomical characteristics of the patient, a spherical joint  64  is arranged  5  between the shafts  62  and  63 .  
         [0023]    It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of constructions differing from the types described above.  
         [0024]    While the invention has been illustrated and described as embodied in arrangement for coupling hearing implant, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.  
         [0025]    Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.  
         [0026]    What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims.