Headwear and implantable cochlear stimulation system including same

Abstract

A headset includes a housing, a headset magnet carried by the housing, and a headset antenna carried by the housing.

Description

[0001] This application is a divisional application of the invention patent application with application number "201780096182.9" filed on April 22, 2020 and invention name "Headgear and implantable cochlear stimulation system including the same". background 1. Technical Field

[0003] The present disclosure generally relates to implantable cochlear stimulation (or "ICS") systems. 2. Background technology

[0004] The ICS system is used to help severely deaf people perceive the sensation of sound by directly stimulating the intact auditory nerve with controlled current pulses. An externally worn microphone picks up ambient sound pressure waves and converts them into electrical signals. These electrical signals are in turn processed by a sound processor and converted into a pulse train with varying pulse widths, rates and / or amplitudes, and transmitted to the implanted receiver circuit of the ICS system. The implanted receiver circuit is connected to an implantable electrode array that has been inserted into the cochlea of ​​the inner ear, and an electrical stimulation current is applied to the varying electrode combinations to produce the perception of sound. Alternatively, the electrode array can be inserted directly into the cochlear nerve without residing in the cochlea. A representative ICS system is disclosed in U.S. Patent No. 5,824,022, entitled "Cochlear stimulation system using a behind-the-ear sound processor with a remote control," the entire contents of which are incorporated herein by reference. Examples of commercially available ICS sound processors include, but are not limited to, the Harmony TM BTE sound processor, Naida TM CIQ Series Sound Processors and Neptune TM Body-worn sound processors, which are available from Advanced Bionics.

[0005] As described above, some ICS systems include an implantable cochlear stimulator (or "cochlear implant"), a sound processor unit (e.g., a body-worn processor or a behind-the-ear processor), and a microphone that is part of or in communication with the sound processor unit. The cochlear implant communicates with the sound processor unit, and some ICS systems include a headgear that communicates with both the sound processor unit and the cochlear implant. The headgear communicates with the cochlear implant via a transmitter (e.g., an antenna) on the headgear and a receiver (e.g., an antenna) on the implant. The headgear and cochlear implant may include respective magnets (or respective multiple magnets) that attract each other, thereby maintaining the headgear on the head and maintaining the position of the headgear transmitter on the head over the implant receiver. The skin and subcutaneous tissue separating the headgear magnet and the implant magnet is sometimes referred to as a "flap."

[0006] An example of a conventional headgear is Figure 1-4 . The headgear 10 is shown in FIG. 1 . The headgear 10 includes a housing 12 in which components such as a microphone and a printed circuit board carrying an antenna 14 and other electronic components are placed, and a removable cap 16 that can be fixed to the housing. An electrical connector 18 connects the circuit board to a sound processor (e.g., a BTE sound processor) via a cable 20. A plurality of axially magnetized headgear magnets 22 (note axis A) or a combination of magnets and non-magnetic spacers are located within a receiving portion 24 that extends to a top wall 26 of the housing 12. The cap 16 holds the magnets 22 and spacers (if any) within the receiving portion 24 and can be removed and reattached so that the respective number of magnets and spacers can be changed to adjust the magnetic strength of the headgear. The headgear 10 can be used in conjunction with a cochlear implant 30 that includes a housing 32, an antenna 34, an axially magnetized positioning magnet 36, and a cochlear lead 38.

[0007] Proper retention of the headgear 10 on the skull and the cochlear implant 30 depends on the normal retention force NRF and the lateral retention force LRF. The normal retention force NRF is a function of the strength of the headgear and implant magnets 18 and 30 and the thickness of the skin flap and hair (if any), while the lateral retention force LRF is a function of the normal retention force NRF and the coefficient of friction between the headgear and the associated head surface. When the normal retention force NRF is too high, pressure on the skin flap can cause discomfort and tissue necrosis, while when the normal retention force NRF is too low, the headgear will not be retained.

[0008] Certain headgear (including Figure 1-4 The headgear 10 (shown) is constructed so that the magnetic strength associated therewith can be adjusted for each patient as needed. The magnetic strength of the headgear 10 is determined by the number of magnets 22 placed in the receiving portion 24. The inventors have determined that the headgear 10 is susceptible to modification. For example, the magnets 22 have a standard disc shape, and therefore, the patient (or other non-audiologist) may replace the magnets 22 with stronger, similarly sized disc magnets in an attempt to improve retention. However, such attempts are misguided because the additional pressure created on the skin may cause tissue necrosis. This issue is particularly important for pediatric patients and their parents because the skin flaps of pediatric patients are very thin (i.e., approximately 2-4 mm thick). Therefore, the inventors have determined that it would be beneficial to prevent the use of any magnets other than those specifically used with the associated headgear.

[0009] Other headgear is provided with a magnet system that includes a plurality of magnets of different strengths that can be individually installed (i.e., only one at a time) in an associated headgear. Such magnets sometimes have a locking feature that engages the headgear in response to, for example, rotation of the magnet relative to the headgear. The inventors have determined that the ways of attaching a magnet to an associated headgear are somewhat limited, and that different methods of attaching the magnets will result in a greater number of magnetic strength options using the same number of magnets.

[0010] Other problems discovered by the inventors also relate to the use of diametrically magnetized magnets in cochlear implants. Figure 3 Stacking multiple diametrically magnetized magnets in the receiving portion in the manner of magnets 22 in the receiving portion, where the N poles will align with the S poles of adjacent magnets in the receiving portion, however, has a low magnetic efficiency compared to a stack where all magnets are oriented in the same NS direction. Another problem is related to the fact that for a given normal holding force NRF, the lateral holding force LRF is maximized when the NS axis is aligned with the gravity direction G. Considering that headgear is usually worn with a headgear cable ( Figure 4 ), some conventional headbands have a fixed arrangement of the NS orientation of the headband magnets, which may be problematic for people who do not wear their headbands in a typical manner. Summary of the invention

[0011] A cochlear implant headset according to one of the present inventions comprises: a housing including a bottom wall and a magnet receiving portion and defining an axis extending through the magnet receiving portion in a direction perpendicular to the bottom wall, the magnet receiving portion defining a non-circular shape in a plane perpendicular to the axis; a headset magnet defining the non-circular shape in a plane perpendicular to the axis and removably located within the magnet receiving portion; and a headset antenna carried by the housing. The present invention also includes a cochlear stimulation system having a sound processor and / or a cochlear implant in combination with such a headset.

[0012] A cochlear implant headset according to one of the present inventions comprises: a housing including a bottom wall and a magnet receiving portion; a headset magnet including a magnetic member and a compressible non-magnetic member permanently secured to the magnetic member, the headset magnet being removably located within the magnet receiving portion; and a headset antenna carried by the housing. The present invention also includes a cochlear stimulation system having a sound processor and / or a cochlear implant in combination with such a headset.

[0013] According to one of the present inventions, a magnet kit includes: a first magnet device, which has a first magnetic strength and includes a first magnetic member, which defines a NS magnetization direction and defines a cross shape in a plane parallel to the NS magnetization direction; and a second magnet device, which has a second magnetic strength greater than the first magnetic strength and includes a second magnetic member, which defines a NS magnetization direction and defines a cross shape in a plane parallel to the NS magnetization direction.

[0014] According to one of the present inventions, a magnet kit includes: a first magnet device, which has a first magnetic strength and includes a first magnetic member and a first compressible non-magnetic member permanently fixed to the first magnetic member; and a second magnet device, which has a second magnetic strength greater than the first magnetic strength and includes a second magnetic member and a second compressible non-magnetic member permanently fixed to the second magnetic member.

[0015] Such headgear, systems and kits have a variety of advantages. By way of example and not limitation, some or all of the present inventions reduce the likelihood that a stronger similarly sized magnet may be substituted for (or stacked with) a desired magnet, increase the number of magnetic strength options associated with a given number of magnets within a magnet set, are well suited for use with diametrically magnetized cochlear implant magnets, and are well suited for those who do not wear their headgear in a typical manner relative to the direction of gravity.

[0016] The present invention will become better understood, and the above and many other features of the present invention will become apparent, by referring to the following detailed description when considered in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Exemplary embodiments will be described in detail below with reference to the accompanying drawings.

[0018] Figure 1 It is a three-dimensional picture of a traditional headgear;

[0019] Figure 2 yes Figure 1 A perspective view of a portion of the headgear shown.

[0020] Figure 3 yes Figure 1 An exploded perspective view of the headgear shown.

[0021] Figure 4 yes Figure 1 A simplified side cross-sectional view of a headgear and cochlear implant is shown.

[0022] Figure 5is a perspective view of a headgear according to an embodiment of the present invention.

[0023] Figure 6 yes Figure 5 A perspective view of a portion of the headgear is shown.

[0024] Figure 7 yes Figure 5 An exploded perspective view of the headgear shown.

[0025] Figure 8 yes Figure 5 An exploded perspective view of the headgear shown.

[0026] Fig. 9 yes Figure 5 A perspective view of a portion of the headgear is shown.

[0027] Fig.10 yes Figure 5 A top view of a portion of the headgear is shown.

[0028] Fig.11 is a perspective view of a magnet system according to an embodiment of the present invention.

[0029] Fig.12 yes Fig.11 A top view of one of the magnets shown.

[0030] Fig.13 yes Fig.11 A perspective view of one of the magnets shown.

[0031] Fig.14 yes Figure 5 A perspective view of a portion of the headgear is shown.

[0032] Fig.15 yes Figure 5 A simplified side cross-sectional view of a headgear and cochlear implant is shown.

[0033] Fig.15A is a perspective view of an exemplary implant magnet device.

[0034] Fig. 15B yes Fig.15A A perspective view of a portion of an implant magnet device is shown.

[0035] Fig. 15C yes Fig.15A An exploded view of the implant magnet device is shown.

[0036] Fig.15D It is along Fig.15A A cross-sectional view taken along line 15D-15D in FIG.

[0037] Fig.16 yes Figure 5 A simplified side cross-sectional view of portions of a headgear and cochlear implant is shown.

[0038] Fig.17 yes Figure 5 A simplified side cross-sectional view of portions of a headgear and cochlear implant is shown.

[0039] Fig.18 FIG. 4 is an exploded perspective view of a headgear according to an embodiment of the present invention.

[0040] Fig.19 yes Fig.18 A perspective view of a portion of the headgear is shown.

[0041] Fig. 20 is a perspective view of a magnet according to an embodiment of the present invention.

[0042] Fig.21 is a side view of a magnet system according to one embodiment of the present invention.

[0043] Fig. 22 yes Fig.18 A simplified side cross-sectional view of portions of a headgear and cochlear implant is shown.

[0044] Fig.23 yes Fig.18 A simplified side cross-sectional view of portions of a headgear and cochlear implant is shown.

[0045] Fig.24 is a perspective view of a headgear according to an embodiment of the present invention.

[0046] Fig.25 yes Fig.24 A perspective view of a portion of the headgear is shown.

[0047] Fig.26 yes Fig.24 An exploded perspective view of the headgear shown.

[0048] Fig. 27 yes Fig.24 An exploded perspective view of the headgear shown.

[0049] Fig.28 is a side view of a magnet according to one embodiment of the present invention.

[0050] Fig.29 yes Fig.28 A perspective view of the magnet shown.

[0051] Fig.30 yes Fig.24 A perspective view of a portion of the headgear is shown.

[0052] Fig.31 yes Fig.24 A top view of a portion of the headgear is shown.

[0053] Fig.32 It is the non-magnetic part of the magnet before it is compressed. Fig.24 A perspective view of a portion of the headgear is shown.

[0054] Fig.33 It is the non-magnetic part of the magnet before it is compressed. Fig.24 A top view of a portion of the headgear is shown.

[0055] Fig.34 After the non-magnetic part of the magnet is compressed Fig.24 A top view of a portion of the headgear is shown.

[0056] Fig.35 After the non-magnetic part of the magnet is compressed Fig.24 A top view of a portion of the headgear is shown.

[0057] Fig.36 is a perspective view of a magnet system according to an embodiment of the present invention.

[0058] Fig.37 yes Fig.36 Side view of the magnet system shown.

[0059] Fig.38 yes Fig.36 Bottom view of the magnet system shown.

[0060] Fig.39 yes Fig.24 A simplified side cross-sectional view of portions of a headgear and cochlear implant is shown.

[0061] Fig.40 yes Fig.24 A simplified side cross-sectional view of portions of a headgear and cochlear implant is shown.

[0062] FIG. 41A to FIG. 41C is a top view showing various marking examples.

[0063] Fig.42 is a perspective view of a tool according to one embodiment of the present invention.

[0064] Fig.43 yes Fig.42 A perspective view of the tool shown.

[0065] Fig.44 is a top view of a magnet kit according to an embodiment of the present invention.

[0066] Fig.45is a block diagram of an ICS system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0067] The following is a detailed description of the best currently known mode of implementing the invention. This description is not limiting but is given merely for the purpose of illustrating the general principles of the invention.

[0068] exist Figure 5-8 An exemplary headgear according to at least one of the present inventions is shown in FIG. 1 and generally indicated by the reference numeral 100. The exemplary headgear 100 may include a housing 102 having a body portion 104 and a cover 106, and a removable cap 108 that may be secured to the housing. A single headgear magnet device (also referred to herein as a "magnet") 110-1 is positioned within a receiving portion 112 that extends to a top wall 114 of the body portion 104. The cap 108 retains the magnet 110-1 within the receiving portion 112 and may be removed and reattached so that the magnet may be removed and replaced. As described below with reference to FIG. Figure 9-13 As discussed in more detail, receiving portion 112 is constructed in such a way that a conventional disc-shaped magnet (i.e., a magnet having a circular cross-section in a plane perpendicular to axis A) must be relatively small to fit into the receiving portion, thereby reducing the likelihood that an individual could use an unauthorized magnet to increase the magnetic strength above the recommended level. The size and shape of magnet 110-1 corresponds to receiving portion 112 ( Figure 6 ) size and shape. Thus, the presence of magnet 110-1 in receiving portion 112 prevents additional magnets (regardless of configuration) from being inserted into the receiving portion, thereby preventing unauthorized use of additional magnets. Magnet 110-1 may also be part of a magnet system that includes multiple similarly shaped magnets with different magnetic strengths, as described below with reference to Figure 11-13 discussed.

[0069] The interior volume (space) of the exemplary housing 102 includes a microphone 116 and a printed circuit board (PCB) 118 that carries the microphone and various other headgear electronic components on one side. The other side of the PCB 118 includes a protective annular cover 122 ( Figure 8 ) within the housing 102. In other embodiments, the antenna may be carried by the cover 106. The PCB 118 also includes an aperture 124 through which the receiving portion 112 extends. A connector 126 (e.g., an RF connector) is connected to the PCB 118 and extends through a tube 128 on the housing body 104. The exemplary cap 108 has a hood 130 to accommodate the connector 126 and the tube 128. The housing 102 and the cap 108 also include microphone ports 132 and 134 that are aligned with the microphone 116. A shield (not shown) may be positioned over the port 132 on the inner surface of the cap 108.

[0070] In the illustrated embodiment, the housing body 104 includes a plurality of walls 136 that define the sides of the receiving portion 112. The housing cover 106 includes a bottom wall 138 that forms the bottom of the receiving portion 112 and an annular recess 140 for the antenna protection cover 122. The bottom (or "outer") surface of the bottom wall 138 can be concave or flat and can include a plurality of protrusions 142. The housing 102 and the cap 108 can be attached to each other using any suitable means (tools). In the illustrated embodiment, the housing body 104 includes a plurality of latch recesses 144 that are provided when the cap is in a Figure 5 When positioned on the housing 102 in the manner shown, the plurality of latch recesses 144 engage with a corresponding plurality of latches 146 on the cap 108 .

[0071] like Fig. 9 and Fig.10 As shown, the exemplary receiving portion 112 has a cross shape in a plane perpendicular to the axis A, and the axis A extends through the receiving portion in a direction perpendicular to the bottom wall 138. Other suitable shapes include, but are not limited to, triangles, ovals, and other non-circular shapes in a plane perpendicular to the axis A, which will limit the size of the circular magnet that can be inserted into the receiving portion. The exemplary receiving portion 112 is defined by the aforementioned cover 106 and the flat wall 136 and the curved corner wall 146. The walls 136 and 146 include a corresponding top end 148 adjacent to the top wall 114 of the housing body portion 104 and a corresponding bottom end 150 adjacent to the housing cover 106. The receiving portion 112 also defines a depth D R (The depth D R is the distance from the top end 148 to the bottom end 150), length L R and width W R Although in the illustrated embodiment the length L R and width W R are the same, but in other embodiments they may be different.

[0072] Steering Figure 11-13 , exemplary magnet 110-1 is one magnet in a multi-magnet system 110, which also includes magnets 110-2, 110-3, and 110-4. The magnets in system 110 have the same shape and size, but have different magnetic strengths. The magnets in system 110 also have the same non-circular shape as receiving portion 112, so that when in the receiving portion, the magnet cannot rotate relative to the receiving portion. In an exemplary embodiment, the magnets in system 110 all have a cross shape similar to the cross shape of receiving portion 112, and all have the same thickness T M Length L M , Width W Mand volume. Although in the embodiment shown the length L M and width W M The lengths L of the magnets 110 - 1 to 110 - 4 are the same, but in other embodiments they may be different. M and width W M The length L of the receiving portion can be R and width W R is the same or at least substantially the same (ie at most greater than the length L of the receiving portion R and width W R 3% smaller). Thickness T M It can be the receiving part depth D R At least 90% of the depth D R is substantially the same (i.e., differs by ±5%). M Greater than the receiving part depth D R In the case where the magnet is larger than the receiving portion 112 (up to 10% larger), the inner surface of the cap 108 may have a small recess (not shown) that can accommodate the portion of the magnet that extends beyond the receiving portion 112.

[0073] There are many ways to make the strengths of magnets in a magnet system such as magnet system 110, in which the overall size and shape of the magnets are the same, different from each other. For example, magnets 110-1 to 110-4 can be formed of materials with different magnetic strengths. Alternatively, or in addition, some parts of the three weaker magnets can be removed (for example, by drilling holes of different sizes in the magnets). In the illustrated embodiment, all magnets except one magnet are two-part structures, which include corresponding magnetic members 152-1 to 152-3 and corresponding non-magnetic members 154-1 to 154-3. In the illustrated embodiment, the magnetic members and non-magnetic members have the same non-circular shape (for example, a cross shape) in corresponding planes perpendicular to axis A. Magnet 110-4 is formed entirely of magnetic material and is therefore composed only of magnetic member 152-4. The strength of magnets 110-1 to 110-3 can be changed by changing the relative thickness of magnetic members 152-1 to 152-3 and non-magnetic members 154-1 to 154-3. For example, the magnetic strength of magnet 110-2 is greater than the magnetic strength of magnet 110-1. Although the overall thickness T of magnets 110-1 and 110-2 is M The same, but the thickness of the magnetic member 152-2 is greater than the thickness of the magnetic member 152-1, and the thickness of the non-magnetic member 154-2 is less than the thickness of the magnetic member 152-1.

[0074] In the illustrated embodiment, the magnetic members 152-1 to 152-3 are permanently fixed to the non-magnetic members 154-1 to 154-3 using an adhesive or other suitable means. As used herein, the term "permanently fixed" means that once connected, the magnetic members will remain attached to the non-magnetic members under normal use conditions and cannot be separated from each other without destroying the magnetic members, the non-magnetic members, and / or the means of fixing the two to each other. Suitable materials for the magnetic members include, but are not limited to, neodymium, while suitable materials for the non-magnetic members include, but are not limited to, plastics and other relatively rigid and lightweight materials.

[0075] The NS magnetization directions of the magnetic members 154-1 to 154-4 will depend on the intended application. In the case where the cochlear implant includes an axially magnetized positioning magnet, when the magnetic member is in the receiving portion 112, the NS magnetization directions of the magnetic members 154-1 to 154-4 can be axially aligned with the axis A ( Fig. 9 ) in the thickness direction of the alignment. In the illustrated embodiment, when the magnet members are in the receiving portion 112, the NS magnetization directions of the magnetic members 154-1 to 154-4 can be in the length (or width) direction perpendicular to the axis A ( Fig. 9 and 14 ), and therefore, perpendicular to axis A.

[0076] In at least some embodiments, the magnets within the magnet system may include visible and / or tactile markings that identify the relative magnetic strength and / or NS magnetization direction of the magnet. For example, exemplary magnets 110-1 to 110-4 may include markings in the form of numbers on the top surfaces of non-magnetic members 154-1 to 154-3 (in the orientation shown), the numbers representing the relative magnetic strength, i.e., "1" being the lowest and "4" being the highest. Alternatively or in addition, non-magnetic members 154-1 to 154-3 may be different colors, where each color corresponds to a relative magnetic strength. Exemplary magnets 110-1 to 110-4 also include "NS" markings on the bottom surfaces of magnetic members 152-1 to 152-4 and the top surfaces of non-magnetic members 154-1 to 154-4.

[0077] The exemplary headgear 100 and magnet system 110 have a number of advantages. For example, Fig.14 As shown, magnet 110-1, like other magnets 110-2 to 110-4, occupies the entire volume of receiving portion 112 (or substantially occupies its entire volume), thereby preventing additional magnets from being inserted into the receiving portion. Headgear 100 is also particularly suitable for cochlear implants, such as Fig.15The cochlear implant 30' shown in the figure, in addition to the housing 32, the antenna 34 and the cochlear lead 38, also includes a rotatable positioning magnet 36' (or the magnet 36' referred to below) which is magnetized in the diameter direction. Figures 15A-15D The cochlear implant 30' also includes a printed circuit board 40 with a stimulation processor ( Fig.45 ), which converts the stimulation data into stimulation signals for stimulating the electrodes of the stimulation lead 38. The NS magnetization direction of the magnet in the system 110 and the corresponding orientation of the receiving portion 112 allow the user to align the NS magnetization direction with the connector 126, such as Fig.14 Thus, when the headgear 100 is worn with the cable 307 (see below) connected to the connector 126 and extending downward along the gravity direction G (as shown in the figure), Fig.45 Discussion), the lateral retention force LRF is maximized because the NS magnetization directions of the headgear magnet 110-1 and the rotatable implant magnet 36' will be aligned with the gravity direction G.

[0078] The headgear of the present invention may also be used in conjunction with a cochlear implant comprising a magnet arrangement having a plurality of diametrically magnetized magnets and having NS magnetization directions rotated into alignment with associated headgear magnets. Figures 15A-15D , an exemplary MRI-compatible magnet apparatus 36" may be used to replace the magnet 36' in the implant 30'. The magnet apparatus 36" includes a housing 52 having a base 54 and a cover 56, a magnet frame 58, and a plurality of elongated diametrically magnetized magnets 60 within the frame and defining an NS direction. The exemplary housing 52 is disc-shaped and defines a central axis A, which is also the central axis of the magnet frame 58. The magnet frame 58 is freely rotatable at 360° about the central axis A relative to the housing 52. The magnets 60 rotate about the central axis A together with the magnet frame 58. Each magnet 60 is also freely rotatable at 360° about its own longitudinal axis A2 relative to the magnet frame 58. The longitudinal axes A2 are parallel to each other and perpendicular to the central axis A.

[0079] There are four elongated diametrically magnetized magnets 60 in the exemplary magnet apparatus 36". In order to efficiently utilize the available volume within the housing 52, two of the otherwise identical magnets 60 are relatively long and two are relatively short. As such, the magnets 60 together define a cross shape similar to the headgear magnet 110-1. The cross-section of the exemplary magnets 60 is circular with rounded corners 62 and is located within a low friction tube 64. The exemplary magnet frame 58 includes a disk 66 and a magnet receiving portion 68 that extends completely through the disk. The magnet receiving portion 68 is configured to hold all of the magnets 60 (four in the illustrated embodiment) and includes a relatively long portion and two relatively short portions. The inner surface of the housing 52 and / or the surface of the frame 58 may be coated with a lubricating layer.

[0080] Given that Figures 15A-15D Due to the ability of each magnet 60 of the illustrated device 36" to freely rotate about its longitudinal axis A2, in the absence of a relatively strong external magnetic field (e.g., an MRI magnetic field), the magnets 60 will be aligned with each other in the NS direction, and the static NS orientation of the magnets 60 will be perpendicular to the central axis A. So oriented, the magnetic field of the diametrically magnetized magnets 60 will be aligned with the magnetic field of the headgear magnets (e.g., headgear magnet 110-1) having the same NS magnetization direction. It should also be noted here that the magnetic fields of the headgear magnets disclosed herein are not strong enough to cause the magnets 60 to rotate out of the static NS orientation shown. Although the frame 58 will rotate as desired, in the presence of the headgear magnets, the magnets 60 will remain in the NS orientation. Fig.15D NS orientation as shown, and will continue to act as a magnetic unit. Figures 15A-15D Further details of the magnet apparatus shown (and other magnet apparatuses) can be found in U.S. Patent Publication No. 2017 / 0239476, the entire contents of which are incorporated herein by reference.

[0081] Steering Fig.16 and Fig.17 , and due to their respective configurations, the number of magnetic strength options provided by the exemplary headgear 100 and magnet system 110 is greater than the number of magnets in the system. In particular, the magnetic attraction between the headgear magnets and the implant magnets is a function of the magnetic strength of the magnets and the distance between the magnets. The magnets 110-1 to 110-3, each of which has a different strength, can be inserted in a manner such that the magnetic members 152-1 to 152-3 face the implant magnet 36' (e.g., Fig.16 1), or inserted with the associated non-magnetic members 154-1 to 154-3 facing the implant magnet (e.g., Fig.171 to 110-3). In other words, magnets 110-1 to 110-3 can be inserted into receiving portion 112 in a manner such that non-magnetic members 154-1 to 154-3 are between associated magnetic members 152-1 to 152-3 and bottom wall 138, or in a manner such that the non-magnetic members are not between the associated magnetic members and the bottom wall. Thus, for each of magnets 110-1 to 110-3, a user can select either of two possible magnetic member-to-implant magnet distances depending on the insertion orientation of the magnet. Magnet 110-4, which lacks a non-magnetic member, does not have this functionality. Thus, each of magnets 110-1 to 110-3 is able to generate two different magnetic attractions with the same implant magnet, compared to conventional magnet systems that limit magnets to having a single insertion orientation.

[0082] The cross-shaped shape of the magnets 110-1 to 110-4 of the present invention can also be used to provide a more volume-efficient headgear compared to a headgear that employs disc-shaped magnets having a circular cross-section. In particular, relatively tall components on the PCB 118 (e.g., the microphone 116) can be positioned closer to the center of the headgear, which facilitates the use of a thinner housing.

[0083] The present invention is not limited to Figure 5-17 The exemplary magnet configuration shown. For example, Fig.18 and Fig.19 The headgear 100a shown in FIG. 1 is substantially similar to the headgear 100, and like elements are indicated by like reference numerals. For example, the headgear 100a includes a housing 102 having the internal components described above, a receiving portion 112, and a removable cap 108 that can be fixed to the housing to cover the receiving portion. The headgear 100a also includes a single headgear magnet device (also referred to herein as a "magnet") 110a-1, which is located within the receiving portion and prevents additional magnets from being inserted into the receiving portion by virtue of its size and shape.

[0084] Magnet 110a-1 may be part of a magnet system that includes a plurality of similarly shaped magnets having different magnetic strengths. Fig. 20 and Fig.21, the exemplary multi-magnet system 110a also includes magnets 110a-2, 110a-3 and 110a-4. The magnets in the system 110a are similar in shape and size, but have different magnetic strengths. Each magnet 110a-1 to 110a-4 in the magnet system 100a includes a corresponding magnetic member 152a-1 to 152a-4, which is configured to be inserted into a similarly shaped receiving portion 112. Each magnet 110a-1 to 110a-3 also includes a corresponding support 154a-1 to 154a-3, while the magnet 110a-4 is composed only of the magnetic member 152a-4. The magnetic members 152a-1 to 152a-4 can be formed of neodymium or any other suitable magnetic material. The pillars 154a-1 to 154a-3 can be separate structures formed of magnetic or non-magnetic materials that are permanently fixed to the associated magnetic members 152a-1 to 152a-3. Alternatively, the magnets 110a-1 to 110a-3 can be one-piece structures, wherein the magnetic members 152a-1 to 152a-3 and pillars 154a-1 to 154a-3 of each magnet 110a-1 to 110a-3 are machined from a single piece of magnetic material. The pillars 154a-1 to 154a-3 can be cylindrical (as shown) or can be other shapes.

[0085] In an exemplary embodiment, each of the magnetic members 152a-1 to 152a-4 has a cross shape similar to the cross shape of the receiving portion 112 and defines a length L of the corresponding magnet 110a-1 to 110a-4. M and width W M , the length L M and width W M The thickness T of the magnets 110a-1 to 110a-3 is the same from magnet to magnet. M is equal to the combined thickness of magnetic members 152a-1 to 152a-3 and pillars 154a-1 to 154a-3, while the thickness of magnet 110a-4 is simply the thickness of magnetic member 152a-4. Although in the illustrated embodiment, length L M and width W M The lengths L of the magnets 110a-1 to 110a-4 are the same, but in other embodiments they may be different. M and width W M The length L of the receiving portion 112 may be R and width W R is the same, or at least substantially the same (ie, at most greater than the length L of the receiving portion 112). R and width W R 3% smaller). Thickness T M It can be the receiving part depth D RAt least 90% of the depth D R In this way, when the magnets 110a-1 to 110a-4 are located in the receiving portion 112, the free ends of the pillars 154a-1 to 154a-3 will be aligned with the receiving portion top 148, and one end of the magnetic member 152a-4 will also be aligned with the receiving portion top 148, thereby preventing the insertion of additional magnets. M Greater than the receiving part depth D R (at most deeper than the receiving part D R In the case of a magnet having a larger diameter (eg, 10% larger), the inner surface of the cap 108 may have a small recess (not shown) that can accommodate the portion of the magnet that extends beyond the receiving portion 112.

[0086] The strength of the magnets 110a-1 to 110a-4 can be changed by changing the relative thickness of the magnetic members 152a-1 to 152a-4 and the pillars 154a-1 to 154a-3 (including the absence of pillars). For example, the magnetic strength of the magnet 110a-2 is greater than that of the magnet 110a-1. Although the overall thickness T of the magnets 110a-1 and 110a-2 is M The same, but the thickness of the magnetic member 152a-2 is greater than the thickness of the magnetic member 152a-1, and the thickness of the support 154a-2 is less than the thickness of the support 152a-1.

[0087] The lengths of the struts 154a-1 to 154a-3 (and the lack of struts) also serve as indicia to identify the relative strengths of the magnets 110a-1 to 110a-4. The longest struts represent the weakest magnets (i.e., magnet 110a-1), while the lack of struts represent the strongest magnets (i.e., magnet 110a-4). Other types of indicia representing strength (e.g., numbers or colors) may also be used. Indicia indicating the direction of the NS magnetization may also be provided on the top and / or bottom surfaces of the magnetic members 152a-1 to 152a-4 ( Fig. 20 ).

[0088] Here, due to their respective configurations, the number of magnetic strength options provided by the exemplary headgear 100a and magnet system 110a is also greater than the number of magnets in the system. Magnets 110a-1 to 110a-3, each having a different strength, can be inserted with magnetic members 152a-1 to 152a-3 facing toward the implant magnet 36' (e.g., Fig. 22 1), or inserted with the associated struts 154a-1 to 154a-3 facing the implant magnet (e.g., Fig.23In other words, magnets 110a-1 to 110a-3 can be inserted into receiving portion 112 in a manner such that pillars 154a-1 to 154a-3 are between the associated magnetic members 152a-1 to 152a-3 and bottom wall 138, or in a manner such that the pillars are not between the associated magnetic members and the bottom wall. Therefore, for each of magnets 110a-1 to 110a-3, the user can select either of two possible distances of the magnetic member from the implant magnet depending on the insertion orientation of the magnet. Magnet 110a-4, which lacks a pillar, does not have this function. Therefore, each of magnets 110a-1 to 110a-3 is capable of generating two different magnetic attractions with the same implant magnet.

[0089] Another exemplary headgear is Figure 24-27 100b. The headgear 100b may include a housing 102b having a body portion 104b and a cover 106b, and a removable cap 108b that may be secured to the housing. A single headgear magnet device (also referred to herein as a "magnet") 110b-2 is located within a receiving portion 112b that extends to a top wall 114b of the body portion 104b. The cap 108b retains the magnet 110b-2 within the receiving portion 112b and may be removed and reattached so that the magnet may be removed and replaced. As described below with reference to Figure 28-35 As discussed in more detail, the magnet 110b-2 and the receiving portion 112b are each configured in a manner such that the magnet can be fixed in any desired rotational orientation relative to the rest of the headgear. When the magnet 110b-2 is fully inserted into the receiving portion 112b, the magnet 110b-2 will prevent additional magnets (regardless of configuration) from being inserted into the receiving portion. The magnet 110b-2 may also be part of a magnet system that includes a plurality of similar magnets having different magnetic strengths, as described below with reference to Figure 36-38 Just as described.

[0090] The interior volume (space) of the exemplary housing 102b includes a microphone 116 and a printed circuit board (PCB) 118b that carries the microphone and various other headgear electronic components on one side. The other side of the PCB 118b includes a protective annular cover 122 ( Fig. 27) within the housing 102b. In other embodiments, the antenna may be carried by the cover 106b. The PCB 118b also includes an aperture 124b through which the receiving portion 112b extends. A connector 126 (e.g., an RF connector) is connected to the PCB 118b and extends through a tube 128b on the housing body 104b. The exemplary cap 108b has a hood 130 to accommodate the connector 126 and the tube 128b. The housing 102b and the cap 108b also include microphone ports 132 and 134 aligned with the microphone 116. A shield (not shown) may be positioned on the inner surface of the cap 108b over the port 132.

[0091] In the illustrated embodiment, the housing body portion 104b and the cover 106b include respective annular walls 136b and 137b that together define the receiving portion 112b. The housing cover 106b also includes a bottom wall 138b that forms the bottom of the receiving portion 112b and an annular recess 140 for the antenna protection cover 122. The bottom surface of the bottom wall 138 can be concave or flat and can include a plurality of protrusions 142. The housing 102b and the cap 108b can be attached to each other by any suitable means. In the illustrated embodiment, the housing body portion 104b also includes a plurality of latch recesses 144 that are provided when the cap is in a Fig.24 When positioned on the housing 102 in the manner shown, the plurality of latch recesses 144 engage with a corresponding plurality of latches 146 on the cap 108b.

[0092] refer to Figure 28-31 , the exemplary magnet 110b-2 is a two-part structure, which includes a magnetic member 152b-2 and a non-magnetic member 154b-2 that can be permanently fixed to the magnetic member. The magnetic member 152b-2 is disc-shaped, magnetized in the diameter direction, and has a diameter DI of the receiving portion. R The same or at least substantially the same diameter DI MM The non-magnetic member 154b-2, which is compressible and formed of foam or another compressible material, includes a disc-shaped body 156b-2 and one or more protrusions 158b-2 extending radially outward from the body. The diameter DI of the body 156b-2 of the compressible non-magnetic member 154b-2 is MB and the receiving part diameter DI R The uncompressed thickness T of the magnet 110b-2 is the same or at least substantially the same. MU Greater than depth D R Thus, when magnet 110b-2 is placed in receiving portion 112b (with magnetic member 152b closest to housing cover 106b), a portion of each protrusion 158b-2 will extend beyond the perimeter of the receiving portion at the top of the receiving portion and extend above top wall 114, as shown in FIG. Fig.32 and Fig.33Then, the non-magnetic member 154b-2 can be compressed into the receiving portion 112b (eg, by using fingers or a tool, or by attaching the cover 108b to the housing 102b). Fig.34 154b-2, particularly at protrusion 158b-2, presses against the inner surface of receiving portion 112b to generate sufficient friction to retain magnet 112b within the receiving portion and prevent the non-magnetic member from expanding back to its uncompressed state. The presence of magnet 110b-2 in receiving portion 112b also prevents additional magnets (regardless of configuration) from being inserted into the receiving portion, thereby preventing unauthorized use of additional magnets.

[0093] The exemplary magnet 110b-2 also includes a marking 160b that can be used to indicate the NS direction of the associated diametrically magnetized magnetic member 152b-2 and the strength of the magnet relative to other magnets in the associated magnet system, as described below with reference to Figure 36-38 In the illustrated embodiment, the marking 160b is in the form of one or more chevrons pointing in the N (or S) direction. When the headgear 100b is combined with a cochlear implant (e.g., Fig.15 In the case of use in combination with implant 30' in or one of the implants described in U.S. Patent Publication No. 2017 / 0239476), for example, by marking 160b, the user will be able to align the NS magnetization direction of magnetic member 152b-2 with the gravity direction G ( Fig.34 ). Moreover, because the magnet 110b-2 can be fixed in any desired rotational orientation about the axis A relative to the receiving portion 112b and the rest of the headgear, the connector 126 (within the tube 128b) and the associated cable are not oriented in the direction of gravity G (see, for example, FIG. Fig.35 ) in the present case, the NS magnetization direction of the magnetic component 152b-2 can be aligned with the gravity direction G.

[0094] Steering Figure 36-38, exemplary magnet 110b-2 is a magnet in a multi-magnet system 110b, which also includes magnets 110b-1, 110b-3 and 110b-4. The magnets in system 110b are similar in shape and size, but have different magnetic strengths. By changing the size of the magnetic member and the compressible non-magnetic member, the magnetic strength is changed between the magnets. In particular, each of magnets 110b-1 to 110b-4 is a two-part structure, wherein each magnet includes a disk-shaped magnetic member 152b-1 to 152b-4 magnetized in the diameter direction and a compressible non-magnetic member 154b-1 to 154b-4 permanently fixed to the associated magnetic member. The compressible non-magnetic members 154b-1 to 154b-4 each include a disk-shaped body 156b-1 to 156b-4 and one or more protrusions 158b-1 to 158b-4 extending radially outward from the body. In some cases, a compressible spacer 111 (eg, a foam spacer) may also be provided in the system 110b. The inner surface of the cap 108b may have a small recess (not shown) that may accommodate the portion of the magnet that extends beyond the receiving portion 112b.

[0095] The corresponding uncompressed thickness T of the magnets 110b-1 to 110b-4 is MU ( Fig.28 ) is greater than the receiving portion depth D R (except for the slightly shorter magnet 110b-1), and the diameter DI MM The respective thickness (and strength) of the magnetic members increases from magnetic member 152b-1 to magnetic member 152b-4, while the uncompressed thickness of the non-magnetic members decreases from non-magnetic member 154b-1 to non-magnetic member 154b-4.

[0096] In the illustrated embodiment, the number of chevrons 160a identifies the relative strength of magnets 110b-1 to 110b-4. A single chevron 160b represents the weakest magnet (i.e., magnet 110b-1), and four chevrons represent the strongest magnet (i.e., magnet 110b-4). Alternatively or in addition, other types of markings representing strength (e.g., numbers or colors) may also be used. Chevrons 160a (or other markings) may also be provided on the top and bottom surfaces of magnets 110b-1 to 110-4. Chevrons 160b or other markings may, for example, be provided on adhesive labels 162b (as shown) or formed directly on associated surfaces.

[0097] As described above in the context of magnet systems 110 and 110a, the number of magnetic strength options provided by the exemplary headgear 100b and magnet system 110b is greater than the number of magnets in the system. Magnets 110b-1 to 110b-4, each having a different strength, can be inserted with magnetic members 152b-1 to 152b-4 facing toward implant magnet 36' (e.g., Fig.39 152b-2 in the implant), or inserted with the associated compressible non-magnetic members 154b-1 to 154b-4 facing the implant magnet (e.g., Fig.40 154b-2 in the receiving portion 112b). In other words, magnets 110b-1 to 110b-4 can be inserted into the receiving portion 112b in a manner such that the non-magnetic members 154-1 to 154-4 are between the associated magnetic members 152b-1 to 152b-4 and the bottom wall 138, or in a manner such that the non-magnetic members are not between the associated magnetic members and the bottom wall. Therefore, for each of magnets 110b-1 to 110b-4, the user can select either of two possible distances between the magnetic member and the implant magnet depending on the insertion orientation of the magnet. In addition, considering that the thickness of magnet 110b-1 is slightly smaller, when magnet 110b-1 is in either orientation, the compressible spacer 111b can be placed between magnet 110b-1 and the bottom end of storage portion 112b. Thus, each of the magnets 110b-2 to 110b-4 can generate two different magnetic attractive forces with the same implant magnet, while the magnet 110b-1 can generate four different magnetic attractive forces with the same implant magnet.

[0098] As mentioned above, the magnet system of the present invention is not limited to any particular type of marker. By way of example and not limitation, the marker may be an elongated rectangular shape 160c extending in the NS magnetization direction ( Fig.41A and Fig.41B ) in the form of a . The number of elongated rectangles 160c will increase with the magnetic strength. The rectangles 160c can be printed on the adhesive label 162c (as shown) or formed directly on the associated surface. Fig.41A and Fig.41C , a single rectangle 160c extending in the NS magnetization direction may be used for each magnet in the magnet system, and color and / or texture may be used to indicate magnetic strength. For example, white ( Fig.41A Label 162c), yellow, green and red ( Fig.41C Label 162d in.

[0099] The present invention also includes a tool configured to insert the magnets described above into their associated headgear and to remove the magnets from the headgear. An exemplary tool is Fig.42 and Fig.43 2. The exemplary tool 200 includes a handle 202 having recesses 204 and 206, a diametrically magnetized magnet 208, and a wedge-shaped portion 210. The tool 200 may be used, for example, to insert a magnet 110b-2 into a headgear 100b (eg, by placing the magnet 208 against the end of the magnet 110b-2 located at the top of the receiving portion. Fig.24 and Fig.25 ) in the groove 112b. Although this end may be an end formed by the compressible material of the non-magnetic member 154b-2, the attraction between the magnetic member 152b-2 and the magnet 208 will be sufficient to secure the magnet 110b-2. The tool 200 can then be used to push the magnet 110b-2 into the groove 112b and fully compress the non-magnetic member 154b-2 into the groove. The tool 200 can be separated from the magnet 110b-2 by moving the magnet 208 laterally over the top edge of the groove 112b. The tool 200 can also be used to remove the magnet 110b-2 from the headgear 100b by placing the magnet 208 close to or against the exposed surface of the magnet above the open end of the groove 112b. When the tool 200 is moved away from the receiving portion in the axial direction, the magnetic attraction between the magnet 208 and the magnetic member 152b-2 will cause the magnet 110b-2 to be pulled out of the receiving portion 112b. The tool 200 can also be used to insert and / or remove other magnets described herein in substantially the same manner. The wedge 210 can be used to remove the cap 108 from the housing 102. In particular, the wedge 210 can be pressed between the housing tube 128 and the cap cover 130 and then pivoted to force the latch 146 out of the recess 144.

[0100] For example, Fig.44 As shown, the exemplary magnet system 100 (or 110a or 110b) can be provided as part of a kit 70 to, for example, an audiologist so that the most appropriate magnet can be selected during the fitting process. Here, the magnets 110-1 to 110-4 of the system 100 can be located in a package 72, which in the illustrated embodiment includes a box or other enclosure 74 with a cover 76 for shipping and storage. The cover 76 can be transparent (as shown) or opaque. In some cases, the tool 200 can be provided in the package 72 as part of the kit 70. In other embodiments, the kit can also include the headgear itself. Here, the magnet system (e.g., magnet system 110) can be provided in the same package as the headgear (e.g., headgear 100). The tool 200 can also be provided in the same package as the magnet system and the headgear.

[0101] For an exemplary ICS system including the headgear of the present invention, Fig.45The illustrated exemplary ICS system 80 includes a cochlear implant 30', a headgear 100 (or 100a or 100b), and a sound processor 300, such as a body-worn sound processor or a behind-the-ear sound processor.

[0102] The exemplary sound processor 300 is a body-worn sound processor that includes a housing 302 in which and / or on which various components are supported. Such components may include, but are not limited to, a sound processor circuit 304, a headset port 306 that may be connected to the headset 100 via a cable 307, an auxiliary device port 308 for an auxiliary device such as a mobile phone or music player, a control panel 310, one or more microphones 312, and a power receiving portion 314 for a removable battery or other removable power source 316 (e.g., rechargeable and disposable batteries or other electrochemical cells). The sound processor circuit 304 converts electrical signals from the microphone 312 into stimulation data.

[0103] During use, one of the headgear magnets (e.g., 110-1) will be attracted to the implant magnet 36', thereby aligning the headgear antenna 120 with the implant antenna 34. Stimulation data and in many cases power are supplied to the headgear 100, and the headgear 100 transmits the stimulation data and in many cases power transcutaneously to the cochlear implant 30' via a wireless link between the antennas. In at least some embodiments, the cable 307 will be configured for a 49 MHz forward telemetry power signal and a 10.7 MHz backward telemetry signal. It should be noted that in other embodiments, communication between the sound processor and the headgear and / or auxiliary device can be achieved through wireless communication technology. In addition, given the presence of the microphone 312 on the sound processor 300, the headgear microphone 116 can be omitted in some cases.

[0104] It should be noted that the magnets and magnet systems of the present invention can be used in an ICS system that is configured such that all components (e.g., battery, microphone, sound processor, and antenna coil) are carried within a single headgear. An example of such a system is disclosed in U.S. Patent Publication No. 2010 / 0046778, entitled "Integrated Cochlear Implant Headgear," and the entire contents of which are incorporated herein by reference.

[0105] Although the invention disclosed herein has been described according to the above preferred embodiments, it will be apparent to those skilled in the art that various modifications and / or supplements to the above preferred embodiments will be apparent. The present invention also includes any combination of elements from the various species and embodiments disclosed in the specification that have not yet been described. It is intended that the scope of the present invention be extended to all such modifications and / or supplements, and the scope of the present invention is limited only by the claims set forth below.

Claims

1. A cochlear implant headgear for a cochlear implant, the cochlear implant headgear comprising: a housing, the housing comprising a bottom wall and a magnet receiving portion; a headgear magnet comprising a magnetic member and a compressible non-magnetic member permanently secured to the magnetic member and removably positioned within the magnet receiving portion; as well as A headgear antenna is carried by the housing.

2. The cochlear implant headgear according to claim 1, wherein: The housing defines an axis extending through the magnet receiving portion in a direction perpendicular to the bottom wall; and The magnet receiving portion defines a circular shape in a plane perpendicular to the axis.

3. The cochlear implant headgear according to claim 2, wherein: The compressible non-magnetic member is compressible in an axial direction.

4. The cochlear implant headgear according to any one of claims 1 to 3, wherein: The magnet receiving portion defines a receiving portion depth; The headgear magnet defines an uncompressed magnet thickness greater than a depth of the receiving portion; and The headgear magnet is compressible to a compressed thickness no greater than a depth of the receiving portion.

5. The cochlear implant headgear according to any one of claims 1 to 4, wherein: The magnet receiving portion and the compressible non-magnetic member are configured to generate a friction force therebetween when the compressible non-magnetic member is compressed, the friction force being sufficient to retain the headgear magnet within the receiving portion and to prevent the compressible non-magnetic member from expanding back to its uncompressed state.

6. The cochlear implant headgear according to any one of claims 1 to 5, wherein: The compressible non-magnetic member is formed of foam.

7. The cochlear implant headgear according to any one of claims 1 to 7, wherein: The compressible non-magnetic member includes a radially extending protrusion.

8. The cochlear implant headgear according to claim 7, wherein: The receiving portion defines a perimeter; and When in an uncompressed state, the radially extending protrusions extend beyond the perimeter.

9. The cochlear implant headgear according to any one of claims 1 to 8, wherein: The magnetic member includes a disk-shaped magnetic member magnetized in a diameter direction.

10. The cochlear implant headgear according to any one of claims 1 to 9, wherein: The headgear magnet and the magnet receiving portion are respectively configured such that the headgear magnet can be inserted into the magnet receiving portion in a first orientation in which the compressible non-magnetic member is located between the magnetic member and the bottom wall of the housing and in a second orientation in which the compressible non-magnetic member is not located between the magnetic member and the bottom wall of the housing.

11. A cochlear implant headgear according to any one of claims 2 to 10, wherein: The orientation of the headgear magnet may be fixed within the magnet receiving portion in any desired rotational orientation about the axis.

12. A cochlear implant headgear according to any one of claims 1 to 11, wherein: The headgear magnet defines a first headgear magnet having a first magnetic strength, the cochlear implant headgear further comprising: and a second headgear magnet that is insertable into the magnet recess in place of the first headgear magnet, the second headgear magnet comprising a magnetic member and a compressible non-magnetic member permanently secured to the magnetic member, and having a second magnetic strength greater than the first magnetic strength.

13. The cochlear implant headgear according to claim 12, wherein: The magnetic members and compressible non-magnetic members of the first and second magnets define respective thicknesses; The thickness of the magnetic member of the second magnet is greater than the thickness of the magnetic member of the first magnet; and The uncompressed thickness of the compressible non-magnetic member of the second magnet is less than the uncompressed thickness of the compressible non-magnetic member of the first magnet.

14. A cochlear stimulation system comprising: A cochlear implant headgear according to any one of claims 1 to 13; and A cochlear implant comprises a cochlear implant magnet and a cochlear implant antenna.

15. A cochlear stimulation system comprising: A cochlear implant headgear according to any one of claims 1 to 13; and A sound processor, the sound processor comprising: housing, and A sound processor circuit is carried within the housing and operably connected to the headgear antenna.

16. The cochlear implant system of claim 15, further comprising: A cochlear implant comprises a cochlear implant magnet and a cochlear implant antenna.

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