EP3395083B1 - Implantierbares mikrofon für eine implantierbare ohrprothese - Google Patents

Implantierbares mikrofon für eine implantierbare ohrprothese Download PDF

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Publication number
EP3395083B1
EP3395083B1 EP16822184.4A EP16822184A EP3395083B1 EP 3395083 B1 EP3395083 B1 EP 3395083B1 EP 16822184 A EP16822184 A EP 16822184A EP 3395083 B1 EP3395083 B1 EP 3395083B1
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EP
European Patent Office
Prior art keywords
sheath
coupler
microphone
cylindrical
sensor
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EP16822184.4A
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English (en)
French (fr)
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EP3395083A1 (de
Inventor
Laurent BADIH
Arnaud Philippe DEVEZE
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Aix Marseille Universite
Assistance Publique Hopitaux de Marseille APHM
Institut Francais des Sciences et Technologirs des Transports de lAmenagement et des Reseaux
Original Assignee
Aix Marseille Universite
Assistance Publique Hopitaux de Marseille APHM
Institut Francais des Sciences et Technologirs des Transports de lAmenagement et des Reseaux
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • H04R25/606—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/67—Implantable hearing aids or parts thereof not covered by H04R25/606

Definitions

  • the present invention relates to the field of hearing implants and in particular to devices intended to be implanted in the middle ear, the inner ear or else bone conduction implants. More specifically, the device according to the invention is an implantable microphone for collecting natural acoustic vibrations.
  • the human ear the seat of the sense organ of hearing, is often described as consisting of three parts as shown in figure 1 : the outer ear 2 , the middle ear 3 and the inner ear 4 .
  • the sound waves picked up by the external ear 2, more precisely by the auricle 1, are guided by the external auditory canal to a membrane called the eardrum 11.
  • the eardrum 11, which marks the separation between outer ear 2 and middle ear 3 is set in vibration by the acoustic waves and transmits its vibrations to a system formed by three ossicles called hammer, anvil and stirrup 9.
  • This chain of ossicles transmits the signal to the organs which form the ear 4 , in particular the cochlea 6.
  • the organs forming the inner ear translate the signals into nerve stimulation sent via the auditory nerve 5 to the brain and interpreted as sound.
  • the dysfunction of one or more parts of the ear can lead to hearing defects which can be more or less important, up to partial or total deafness.
  • the reception of the sound signal and its conversion into an electrical signal are carried out by a microphone. Most often the microphone is placed outside the body. The sound signal picked up by the microphone is then transmitted in the form of an electrical signal to the part of the device implanted for example at the level of the middle ear and responsible for restoring the signal to the auditory system.
  • a source of energy for example a battery
  • the microphone and its battery therefore remain outside the patient's body, which can create reluctance of an aesthetic nature or else uncomfortable situations, for example in the presence of water or during sleep.
  • WO 99/04600 A1 discloses an implantable microphone for a middle ear prosthesis comprising: means adapted to be attached to bone proximate an individual's middle ear; a cylindrical holding sheath, said sheath being adapted to be fixed by means of said fixing means and being of a shape adapted to extend from the fixing bone towards the ossicular chain of the individual; a sensor for converting a mechanical signal into an electrical signal; and means for translating said sensor along the axis of the cylindrical sheath, the translation means comprising a feed screw, a sliding ring and a positioning piece.
  • the longitudinal axis of the sensor is oriented along the axis of the cylindrical sheath, and the positioning part is formed integrally with the sensor.
  • the sliding ring is housed in the cylindrical sheath and the sensor does not extend along the axis of the cylindrical sheath.
  • US 2008/293998 A1 discloses a device for coupling an implantable transducer, comprising a coupler adapted to be placed in contact with the ossicular chain in a reversible manner.
  • WO 00/48426 A2 discloses an implantable microphone comprising a cylindrical holding sheath, translation means and a sensor.
  • the present invention aims to provide an implantable microphone for a middle ear hearing implant, a bone conduction implant or a cochlear implant, said microphone having an adaptive coupling between the ossicular chain and the linear actuator.
  • a fixing system formed for example by a support arm, the said arm comprising an end intended to receive a fixing screw and a other end intended to support the cylindrical sheath.
  • the fixation screw used is for example an osteosynthesis screw.
  • osteosynthesis screw is meant a screw used in known manner for placing an implant and in particular for fixing the implant to a bone.
  • a bone close to the ear is for example the mastoid bone.
  • Coupler is understood to mean a rod integral with an end piece, said end piece having different shapes depending on the location of the ossicular chain with which it is intended to be brought into contact and the type of contact desired.
  • the shape of the tip is such that it can be positioned on the ossicular chain without altering the shape of the ossicular chain or breaking it. This property makes the implant perfectly reversible: the patient's auditory system can be brought back to the configuration prior to the placement of the implantable microphone.
  • the shapes of the tip are chosen to obtain contact by simple pressure or by clip with at least one point of the ossicular chain.
  • sensor or linear actuator or transducer an element capable of translating a vibrational signal into an electrical signal.
  • An example of sensor is a piezoelectric, electromechanical or micro-membrane transducer.
  • Means for translating said coupler along the axis of the cylinder means means making it possible to translate the coupler along the axis of the cylinder individualized by the sheath.
  • This translation makes it possible to adjust the pressure exerted by the coupler on the chain of ossicles and therefore to adapt the intensity of the coupling between the sensor and the ossicular chain.
  • This adjustment makes it possible to modify the coupling to the ossicular chain even after having implanted the microphone, for example to adapt it to the anatomical changes of the auditory system of the patient.
  • the invention consists of a microphone implantable at the level of the middle ear for the collection of acoustic vibrations.
  • This microphone comprises a coupler, formed by a rod secured to a tip, said coupler being in contact with the patient's ossicular chain.
  • the eardrum 11 is vibrated. These vibrations are transmitted to the ossicular chain of the individual made up of three ossicles: the hammer, the anvil and the stirrup.
  • the present invention exploits the movement of the ossicles to collect acoustic vibrations.
  • the coupler is in contact by simple pressure or by clip with a place of the ossicular chain, which makes it possible to transmit the mechanical energy of the vibrations to a sensor.
  • the sensor can for example be a piezoelectric transducer, an electromechanical transducer or a transducer of the micro-membrane type. The sensor translates the mechanical signal thus collected into an electrical signal.
  • a remarkable advantage of the device according to the invention is that the microphone is configured to be put in place reversibly.
  • the implantation of the microphone does not require the rupture of the ossicular chain of the individual and the auditory system of the patient can be returned to the configuration prior to the placement of the implant.
  • Another remarkable advantage of the device according to the invention is the possibility of adjusting the position of the coupler by translation along the axis of the cylinder.
  • the pressure exerted by the tip on the ossicular chain is modified.
  • This setting provides better control of the coupling between the sensor or transducer or linear actuator and the ossicular chain as well as than modifying the intensity of the coupling over time to adapt the coupling to the anatomical changes of the patient's auditory system.
  • the sensor for example a piezoelectric transducer, an electromechanical transducer or a micro-membrane transducer, is integral with a positioning part.
  • the positioning part comprises a non-threaded part consisting of a location in which the sensor fits.
  • the positioning part also comprises a threaded part in which a micrometric advancement screw is inserted.
  • the sensor is also attached to a coupler consisting of a rod attached to an end piece.
  • the shape of the tip varies according to the location of the ossicular chain and the characteristics of the coupling that one wishes to achieve.
  • the tip can, for example, be in the shape of a point, a ball, a three-pronged pliers or a two-pronged pliers.
  • the device is equipped with at least one pass-through in order to guarantee its connectivity.
  • the device is encapsulated in titanium in order to be able to be implanted.
  • the microphone is connected to the main body of the implant which contains a source of energy for the functioning of the hearing aid and electronic components for the processing of the signal collected by the microphone and its restitution to the auditory system of the patient.
  • the picture 3 shows an exploded overall view of the device 100 according to the invention.
  • the figure 4 shows a view in three dimensions and in section of the device 100 of the picture 3 .
  • the means 301 are the means for attaching the microphone to a bone near the ear.
  • said fixing means 301 comprise at least one arm 303, one end of the arm comprising at least one slot 302 for a fixing screw, another end supporting the cylindrical sheath 30.
  • a plurality of means 301 having this function can be present, for example the device according to the picture 3 shows three mounting arms 303.
  • An advantage of this embodiment is to be able to fix the implant in a stable manner close to the place of the ossicular chain of interest.
  • each arm 303 can comprise several locations 302, thus improving the attachment of the device to the bone, in particular the mastoid bone.
  • the translation means 70 of the coupler 60 comprise a micrometric advancement screw 10, a slide 20, a positioning piece 40, said slide ring 20 being a hollow cylinder concentric with the cylindrical retaining sheath 30.
  • An advantage of this embodiment is to allow the translation of the coupler 60 in a simple way for the operator, while maintaining good positioning accuracy thanks to the presence of the micrometric screw 10.
  • the positioning part 40 by screwing onto the micrometric screw 10, can move forward or backward along the axis 101 of the cylinder 30, which corresponds to a rimpedement or a distance with respect to the ossicular chain.
  • the cylindrical sheath 30 therefore has a dual function: holding the system formed by the sensor 50 integral with the coupler 60 and housing the translation means 20, 10, 40 of the coupler 60.
  • the cylindrical sheath 30 advantageously comprises a pin 320 and the sliding ring 20 comprises a notch (not visible in the figure) of a shape suitable for fitting into the pin for locking in rotation around the axis of the cylinder and in translation. along the axis 101 of the cylinder, said micrometric screw 10 being arranged along the axis of the sliding ring 20 and locked in rotation and translation at the level of the face of the sliding ring 201 close to the fixing bone.
  • the sliding ring 20 is thus secured to the cylindrical holding sheath 30 both in rotation and in translation.
  • the sliding ring 20 and the holding sheath 30 are configured as two concentric cylinders, therefore having the same axis 101.
  • the face 201 of the sliding ring close to the fixation bone comprises a housing for the head of the screw micrometric 10. Said micrometric screw 10 is therefore arranged parallel to the axis of the cylinder 101 and locked in rotation and translation.
  • An advantage of this arrangement is to secure in translation and in rotation the sheath 30, the sliding ring 20 and the micrometric screw 10.
  • the cylindrical sheath 30 being fixed to a bone, the sliding ring 20 and the micrometric screw are themselves same frozen.
  • the positioning piece 40 can therefore be screwed onto the positioning screw 10 by translating the positioning piece relative to the cylindrical sheath 30. By translating along the axis 101 of the cylinder, the positioning piece 40 slides inside the ring 20 and can therefore move sensor 50 (attached to part 40) closer to or further away from the ossicular chain.
  • Another advantage of this arrangement is to give stability to the implant and in particular to the sensor 50 so as to be able to more effectively collect the mechanical vibrations of the chain of ossicles.
  • the positioning part 40 comprises an unthreaded part intended to accommodate the sensor 50 and a threaded part into which the micrometric advancement screw 10 is inserted.
  • An advantage is to fix the sensor 50 to the positioning part 40 by placing it in the non-threaded part of the positioning part 40.
  • Said positioning part 40 being able to translate with respect to the sheath 30 and slide inside the ring 20, it makes it possible to translate the sensor 50 using the micrometric advancement screw 10. By translating along the axis of the cylinder 101 the sensor can therefore approach or move away from the ossicular chain.
  • the positioning part 40, the sensor 50 and the coupler 60 are secured in translation along the axis 101 of the cylinder 30.
  • An advantage of this variant is to allow the translation of the system formed by the positioning part 40, the receiver 50 and the coupler 60 simply by screwing the positioning part 40 onto the micrometric advancement screw 10. This translation makes it possible to change the position of said coupler 60 and therefore to bring it closer to or further from the ossicular chain of the individual.
  • the parts 10, 20 and 40 constitute the translation means 70 of the sensor 50 integral with the coupler 60. More precisely, by screwing the threaded part of the positioning part 40 of the receiver onto the micrometric advancement screw, a translation integral with the system composed of the receiver 50, its positioning part 40 and the coupler 60.
  • coupler 60 modifies the contact pressure of said coupler 60 on the ossicular chain.
  • This adjustment in translation makes it possible to change the intensity of the coupling between the sensor 50 and the chain of ossicles. This makes it possible to adapt the implant to the evolution of the system hearing of the patient over time, for example to take into account anatomical changes.
  • Another advantage of the adjustable position of the coupler 60 is to be able to seek the optimum coupling to the ossicular chain through an in situ impedance measurement.
  • optimal coupling of the sensor 50 to the ossicular chain is meant a coupling such that the mechanical vibrations are effectively transmitted to the sensor 50 without thereby altering the mechanical properties of the chain of ossicles.
  • the ossicular chain is intended to vibrate following the collection of vibrations from the eardrum 11. This vibration can be prevented when an object such as the coupler 60 of the microphone presses against one of the ossicles.
  • the response of the ossicular chain can be altered over certain frequency ranges.
  • the optimum contact pressure can be determined by carrying out an impedance measurement in situ. This measurement makes it possible to check whether the quality of the transmission of the vibrations at the different frequencies is altered by the presence of the coupler 60. If an excessive alteration is observed, the position of the coupler 60 can be changed until the optimum coupling is obtained.
  • Sensor 50 may be a piezoelectric transducer.
  • Sensor 50 can also be an electromechanical transducer.
  • the sensor 50 can also be a micro-membrane type sensor.
  • An advantage of this type of sensor is the use of a transducer 50 for converting a mechanical signal into an electrical signal. Any electromechanical transducer capable of translating a mechanical signal into an electrical signal can be used.
  • the coupler comprises a rod 60 secured to a tip (601, 602, 603 or 604), said tip providing contact between the coupler 60 and the ossicular chain of the individual.
  • An advantage of this preferred embodiment is to guarantee contact between the ossicular chain of the individual and the sensor 50 thanks to the presence of the tip at the end of the coupler 60.
  • the tip has a spherical shape 601.
  • An advantage of this first embodiment is to be able to couple the microphone 100 to the ossicular chain of the individual by simple contact pressure.
  • the fact of not altering the structure of the ossicles makes the implant perfectly reversible.
  • this shape of the tip makes it possible to translate the tip without detaching it from the ossicular chain.
  • the tip 60 has the shape of a two-arm clamp 603.
  • An advantage of this second embodiment is to be able to couple the microphone 100 to the ossicular chain of the individual by clip at the level of the descending branch of the malleus.
  • the fact of not altering the structure of the ossicles makes the implant perfectly reversible.
  • the tip has the shape of a three-pronged clamp 602.
  • An advantage of this third embodiment is to be able to couple the microphone 100 to the ossicular chain of the individual by clip at the level of the head of the hammer.
  • the fact of not altering the structure of the ossicles makes the implant perfectly reversible.
  • the tip has the shape of a tip 604.
  • An advantage of this fourth embodiment is to be able to couple the microphone 100 to the ossicular chain of the individual by simple contact pressure.
  • the fact of not altering the structure of the ossicles makes the implant perfectly reversible.
  • this shape of the tip makes it possible to translate the tip without detaching it from the ossicular chain.
  • the fact of being able to choose from among several tip shapes allows great flexibility in adapting the device during implantation. This allows both to take into account the conformation of the middle ear of the individual and to seek the optimal coupling between the ossicular chain and the sensor thanks to the degree of freedom of translation of the coupler.
  • the microphone is connected to the main body of the implant by a two- or three-point connector.
  • the figure 5a shows an overview of the device once assembled.
  • the fixing means 301 comprising at least one fixing hole for at least one osteosynthesis screw.
  • the means 301 are intended to fix the microphone to a bone close to the ear, for example the mastoid bone.
  • the positioning piece 40 of the receiver 50 and the coupler 60 we also see the positioning piece 40 of the receiver 50 and the coupler 60, as well as the different shapes of end piece for the coupler 601, 602, 603 or 604.
  • the elements 40, 50 and 60 are secured and can translate by screwing the micrometric advancement screw 10 into the positioning part 40.
  • the direction of the translational movement is individuated by the double arrow 500 and follows the axis 101 of the cylindrical sheath 30. This adjustment makes it possible to modify the position of the coupler and therefore the intensity of the coupling between the microphone and the ossicular chain.
  • the cylindrical holding sheath 30 is secured to the fixing system 301 and to the bone to which the microphone is fixed.
  • the sliding ring 20 and the micrometric screw 10 are also integral with the cylindrical sheath 30.
  • the figure 5b shows another sectional view of the system.
  • the face of the cylindrical sheath in contact with the fixing surface forms an angle 330 with the axis 101 of the cylinder.
  • the function of this cutting angle can be appreciated in Figures 6 - 7 - 8. Indeed the angle allows the cylinder forming the sheath 30 to extend from the attachment bone towards the ossicle chain with a direction adapted to bring the coupler into contact with the ossicular chain.
  • the direction of translation of the coupler to obtain the optimum coupling is represented by the double arrow 500.
  • the figure 6a shows a particular embodiment of the device according to the invention.
  • the microphone is implanted in the middle ear.
  • the cylindrical sheath 30 can be seen extending from the mastoid bone towards the chain of ossicles. In the extension of the sheath and along the axis of the cylinder, we see the positioning piece 40 and the sensor 50.
  • This figure also shows how the angle 330 cutting the cylinder 30 makes it possible both to fix the device to the mastoid bone and to bring the coupler 60 into contact with a place in the ossicular chain.
  • the figure 6b is an enlargement that shows in detail the implanted microphone of figure 6a .
  • the sensor 50 secured to the coupler 60 can clearly be seen.
  • the end piece of the coupler 602 has the shape of a three-arm clamp.
  • the advantage of this shape of the tip is to be able to be fixed by wrapping the three branches around the head of the hammer.
  • the translation of the coupler 60 along the axis of the cylinder 30 makes it possible to bring the coupler itself closer to or further away from the chain of ossicles and to modify the contact pressure. Improved coupling can thus be found.
  • the implementation of the device does not require the rupture of the chain of ossicles. On the contrary, its installation is reversible because, once the microphone is removed, the hearing system regains its original functionality.
  • the figure 7a shows a second particular mode of implementation of the microphone 100 .
  • the microphone is implanted in the middle ear.
  • the cylindrical sheath 30 can be seen extending from the mastoid bone towards the chain of ossicles.
  • the positioning piece 40 and the sensor 50 can also be seen. mastoid bone and bring the coupler into contact with a place in the ossicular chain.
  • the figure 7b is an enlargement that shows in detail the implanted microphone 100 of the figure 7a .
  • the sensor 50 secured to the coupler 60 can clearly be seen. to be able to be fixed by wrapping the two branches around the ascending branch of the hammer.
  • the translation of the coupler 60 along the axis 101 of the cylinder 30 makes it possible to bring the coupler itself closer to or further away from the ossicle chain and to modify the contact pressure. Improved coupling can thus be found.
  • the implementation of the device does not require the rupture of the chain of ossicles. On the contrary, its installation is reversible because, once the microphone is removed, the auditory system regains its original functionality.
  • the figure 8a shows a third particular mode of implementation of the device 100 .
  • the microphone is implanted in the middle ear.
  • the positioning piece 40 and the sensor 50 can also be seen. mastoid bone and bring the coupler into contact with a place in the ossicular chain.
  • the figure 8b is an enlargement that shows in detail the implanted microphone of the figure 8a .
  • the sensor 50 secured to the coupler 60 can clearly be seen.
  • the tip of the coupler has the shape of a ball 601.
  • the advantage of this shape of the tip is to be in contact by simple pressure with the head of the hammer.
  • the translation of the coupler 60 along the axis 101 of the cylinder 30 makes it possible to bring the coupler itself closer to or further away from the ossicle chain and to modify the contact pressure. Improved coupling can thus be found.
  • the implementation of the device does not require the rupture of the chain of ossicles. On the contrary, its installation is reversible because, once the microphone is removed, the hearing system regains its original functionality.
  • the figure 9a shows a fourth particular mode of implementation of the device 100 .
  • the microphone is implanted in the middle ear.
  • the cylindrical sheath 30 extends from the mastoid bone towards the chain of ossicles. In the extension of the sheath and along the axis of the cylinder, the positioning piece 40 and the sensor 50 can also be seen. mastoid bone and bring the coupler into contact with a place in the ossicular chain.
  • the figure 9b is an enlargement that shows in detail the implanted microphone of the figure 9a .
  • the sensor 50 secured to the coupler 60 can clearly be seen.
  • the tip of the coupler has the shape of a tip 604. by simple pressure with the head of the hammer.
  • the translation of the coupler 60 along the axis 101 of the cylinder 30 makes it possible to bring the coupler itself closer to or further away from the ossicle chain and to modify the contact pressure. Improved coupling can thus be found.
  • the implementation of the device does not require the rupture of the chain of ossicles. On the contrary, its installation is reversible because, once the microphone is removed, the hearing system regains its original functionality.
  • a ball joint type positioning system allows the three-dimensional adjustment of the coupler 60 with respect to the ossicular chain.
  • the figure 10 shows a sectional view of a first embodiment using a ball joint type positioning system.
  • the sliding ring 20 comprises an outer surface of substantially spherical shape.
  • Cylindrical sheath 30 includes a cavity of substantially hemispherical shape suitable for receiving slip ring 20.
  • Slip ring 20 and sheath 30 cooperate to allow rotation of coupler 60 along the two angles A1 and A2 of the figure10 .
  • a cylindrical clamping ring 21 with a female spherical end compresses the sliding ring 20 and the sheath 30, thanks to a male thread on the cylindrical clamping ring 21 and a female thread on the sheath 30.
  • the clamping ring has lugs on the face opposite to the sheath allowing its tightening.
  • the axial translation of the sensor 50 is controlled using the micrometric screw 10 and the spring 51.
  • Said screw 10 is screwed axially into the positioning part 40.
  • the spring 51 allows the return to the rear of the sensor 50, while blocking the sensor 50 against the micrometric screw 10. In other words, the spring makes it possible to solidarize in translation the screw 10 and the sensor 50.
  • the Figure 11a shows a cross-sectional view of a second particular embodiment, for which “ball joint” type positioning means make it possible to obtain a three-dimensional adjustment of the coupler 60 to the chain of ossicles.
  • the sliding ring 20 comprises an external surface of substantially spherical shape and the cylindrical sheath 30 is, at its end, of hollow or female hemispherical shape.
  • the cylindrical sheath 30 comprises a cavity of substantially hemispherical shape in which the sliding ring 20 is positioned.
  • a cylindrical clamping ring 21 with a hollow or female hemispherical end makes it possible to maintain the sliding ring 20 of spherical shape against the cylindrical sheath 30.
  • the clamping ring 21 is screwed to the cylindrical sheath by a thread on the cylindrical clamping ring 21 and a thread on the cylindrical sheath 30.
  • the cylindrical clamping ring 21 also comprising on the face opposite to the sliding ring 20 means allowing the clamping of the clamping ring 21 such as lugs.
  • these positioning means allow the coupler 60 to have at least 2 degrees of freedom, thus improving the coupling between the coupler 60 and the chain of ossicles.
  • the sliding ring 20 and the sheath 30 cooperate to allow the rotation of the coupler 60 according to the two angles A1 and A2 of the figure 11 .
  • the figures 11a and 11b show a means for adjusting the progress of the sensor, comprising an adjustment screw 101, screwed into the positioning part 40 on the periphery of the sensor 50, so that the threads of the adjustment screw 101 and of the sensor 50 are tangential, making it possible to adjust the progress of the sensor 50 by helical connection.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Neurosurgery (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Prostheses (AREA)

Claims (9)

  1. Implantierbares Mikrofon (100) für eine Mittelohrprothese, umfassend:
    o Mittel (301), die geeignet sind, um an einem Befestigungsknochen in der Nähe des Mittelohres einer Einzelperson befestigt zu sein;
    o eine zylindrische Haltehülle (30), wobei die genannte Hülle geeignet ist, um dank der genannten Befestigungsmittel (301) am Befestigungsknochen befestigt zu sein und geeignet ist, um sich von dem Befestigungsknochen zur Gehörknöchelchenkette der Einzelperson zu erstrecken;
    ∘ einen Koppler (60), umfassend einen Stift (600) und einen Ansatz in geeigneter Form (601, 602, 603, 604), um mit wenigstens einem Punkt der Gehörknöchelchenkette der Einzelperson reversibel in Kontakt gebracht zu sein;
    o einen Sensor (50) für die Umwandlung eines mechanischen Signals in ein elektrisches Signal, wobei der genannte Sensor mit dem Koppler (60) fest verbunden ist, von der zylindrischen Haltehülle (30) gestützt ist und dessen Längsachse gemäß der Achse (101) der zylindrischen Hülle (30) ausgerichtet ist;
    o Translationsmittel (70) des genannten Kopplers gemäß der Achse (101) der zylindrischen Hülle (30), wobei die genannten Mittel in der zylindrischen Hülle (30) aufgenommen sind und eine mikrometrische Vorschubspindel (10), einen Gleitring (20) und ein Positionierungsstück (40) umfassen, wobei das Positionierungsstück (40) einen Teil ohne Gewindebohrung, der zum Aufnehmen des Sensors (50) bestimmt ist, und einen Teil mit Gewindebohrung, in den die mikrometrische Vorschubspindel (10) eingefügt ist, umfasst.
  2. Mikrofon gemäß dem voranstehenden Anspruch, dadurch gekennzeichnet, dass die genannten Mittel (301), die geeignet sind, um an einem Befestigungsknochen in der Nähe des Mittelohrs einer Einzelperson befestigt zu sein, wenigstens einen Arm (303) umfassen, wobei ein Ende des Arms wenigstens eine Einbaustelle (302) für eine Befestigungsschraube umfasst, wobei ein anderes Ende die zylindrische Hülle (30) stützt.
  3. Mikrofon gemäß irgendeinem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass der genannte Gleitring (20) ein an der zylindrischen Haltehüllte (30) konzentrischer Hohlzylinder ist.
  4. Mikrofon gemäß dem voranstehenden Anspruch, dadurch gekennzeichnet, dass die zylindrische Hülle (30) wenigstens einen Zapfen (320) umfasst und der Gleitring (20) wenigstens eine Einkerbung in geeigneter Form umfasst, um auf dem Zapfen zum Blockieren des Rings (20) in Rotation um die Achse des Zylinders und in Translation gemäß der Achse des Zylinders zum Eingreifen zu kommen, wobei die genannte mikrometrische Schraube (10) gemäß der Achse des Gleitrings (20) angeordnet und in Rotation und in Translation an der Seite des Gleitrings (201) in der Nähe des Befestigungsknochens blockiert ist.
  5. Mikrofon gemäß einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, dass das Positionierungsstück (40), der Sensor (50) und der Koppler (60) in Translation gemäß der Achse (101) der zylindrischen Hülle (30) fest verbunden sind.
  6. Mikrofon gemäß einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Gleitring (20) eine externe Fläche in einer deutlich sphärischen Form umfasst und die zylindrische Hülle (30) eine Ausnehmung in einer deutlich halbkugelförmigen Form umfasst, wobei das Mikrofon darüber hinaus einen zylindrischen Sprengring (21) mit weiblichem halbkugelförmigem Ansatz umfasst.
  7. Mikrofon gemäß irgendeinem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass der Sensor ein piezoelektrischer, elektromechanischer ein Wandler vom Mikro-Membrantyp ist.
  8. Mikrofon gemäß irgendeinem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass der Ansatz eine sphärische Form (601) oder eine Klammerform mit zwei Zweigen (603) oder eine Klammerform mit drei Zweigen (602) aufweist.
  9. Vorrichtung, umfassend:
    ∘ ein Mikrofon gemäß irgendeinem der Ansprüche 1 bis 8;
    ∘ ein Implantat, das einen Implantat-Hauptkörper enthält;
    ∘ einen Verbinder mit zwei oder drei Punkten, wobei das genannte Mikrofon mit dem genannten Implantat durch den genannten Verbinder mit zwei oder drei Punkten verbunden ist.
EP16822184.4A 2015-12-24 2016-12-23 Implantierbares mikrofon für eine implantierbare ohrprothese Active EP3395083B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1563344A FR3046323B1 (fr) 2015-12-24 2015-12-24 Microphone implantable pour une prothese d’oreille implantable
PCT/EP2016/082602 WO2017109200A1 (fr) 2015-12-24 2016-12-23 Microphone implantable pour une prothèse d'oreille implantable

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EP3395083A1 EP3395083A1 (de) 2018-10-31
EP3395083B1 true EP3395083B1 (de) 2022-01-26

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US (1) US11006228B2 (de)
EP (1) EP3395083B1 (de)
CN (1) CN108713325B (de)
FR (1) FR3046323B1 (de)
WO (1) WO2017109200A1 (de)

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US11128967B2 (en) * 2017-02-23 2021-09-21 Cochlear Limited Transducer placement for growth accommodation
US20240214753A1 (en) * 2021-05-04 2024-06-27 Cochlear Limited Rotatably adjustable fixation system for medical implant

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US20090124849A1 (en) * 2007-11-08 2009-05-14 Nicholas Pergola Spanning connector for implantable hearing instrument
US20120078368A1 (en) * 2010-09-24 2012-03-29 Thomas Lenarz Device for variable-length fixing of the actuator end piece of an active hearing implant in the middle ear

Also Published As

Publication number Publication date
FR3046323B1 (fr) 2018-02-02
FR3046323A1 (fr) 2017-06-30
EP3395083A1 (de) 2018-10-31
WO2017109200A1 (fr) 2017-06-29
CN108713325A (zh) 2018-10-26
CN108713325B (zh) 2021-03-02
US11006228B2 (en) 2021-05-11
US20180376262A1 (en) 2018-12-27

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