DE102016107517B4 - Middle ear implant - Google Patents

Middle ear implant

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Publication number
DE102016107517B4
DE102016107517B4 DE102016107517.5A DE102016107517A DE102016107517B4 DE 102016107517 B4 DE102016107517 B4 DE 102016107517B4 DE 102016107517 A DE102016107517 A DE 102016107517A DE 102016107517 B4 DE102016107517 B4 DE 102016107517B4
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DE
Germany
Prior art keywords
hydraulic
middle ear
actuator
cochlea
ear implant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DE102016107517.5A
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German (de)
Other versions
DE102016107517A1 (en
Inventor
Daniel Schurzig
Omid Majdani
Thomas Lenarz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medizinische Hochschule Hannover
Original Assignee
Medizinische Hochschule Hannover
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Priority to DE102016107517.5A priority Critical patent/DE102016107517B4/en
Publication of DE102016107517A1 publication Critical patent/DE102016107517A1/en
Application granted granted Critical
Publication of DE102016107517B4 publication Critical patent/DE102016107517B4/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • H04R25/606Mounting 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/18Internal ear or nose parts, e.g. ear-drums
    • A61F2002/183Ear parts
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/67Implantable hearing aids or parts thereof not covered by H04R25/606
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/55Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
    • H04R25/554Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired using a wireless connection, e.g. between microphone and amplifier or using Tcoils

Abstract

Middle ear implant for direct mechanical stimulation of the cochlear fluid (19) in the human cochlea (1), the middle ear implant having at least:
a) an electronic signal processing unit (5, 8) which is set up to process a received signal by means of electronics,
b) an actuator (4), which is coupled to the electronic signal processing unit (5, 8) and is acted upon by this electrical drive signals corresponding to the processed received signal, wherein the actuator (4) is adapted to generate a mechanical movement in Consequence of the application by the electrical drive signals, characterized in that the middle ear implant has at least the following:
c) a separate from the actuator (4) hydraulic master cylinder (3) having at least one mechanical biasing member (31, 33) and at least one to be filled with a hydraulic fluid hydraulic chamber (34), wherein
d) the mechanical loading element (31, 34) is mechanically coupled to the actuator (4) and
e) the hydraulic chamber (34) is coupled hydraulically directly or via at least one separating membrane to a chamber (11, 12) of the cochlea (1) containing the cochlear fluid (19) or can be coupled thereto,
f) so that hydraulic pressure waves can be fed directly into the cochlear fluid (19) by mechanical movements, which are delivered by the actuator (4) as a result of the action of the electrical control signals, by the master cylinder (3).

Description

  • The invention relates to a middle ear implant for the direct mechanical stimulation of the cochlea fluid in the human cochlea.
  • In the area of the hearing prostheses middle ear implants are used with still sufficient remaining hearing, in order to mechanically stimulate the ossicles or the border structures between middle and inner ear (oval and round window) in the area of the middle ear. The oval and the round window and their properties are important for middle ear implants, since their vibration amplitudes dictate those amplitudes of the inner ear structure (basilar membrane) responsible for the auditory impression. The greater the vibration amplitudes of these connections between the middle and inner ear, the stronger the vibrations of the basilar membrane, i. the more intense is the listening experience for the patient.
  • With an intact hearing, the incoming acoustic signals are first passed as sound waves on the eardrum to be transferred from there via the middle ear located bone on the oval window of the liquid-filled cochlea (inner ear). Here, the movements of the ossicles cause oscillations of the oval window, which continue in the perilymph of the scala vestibuli of the cochlea. The pressure wave in the Scala Vestibuli, in turn, is directed via the movement of Reissner's membrane to the endolymph-filled Scala Media via the Corti organ. This leads to a sensory perception of the hearing receptors (hair cells) of the organ of Corti. The pressure wave finally reaches the perilymph of the scala tympani in the cochlea, which is limited by the pressure-compensating round window. Middle ear implants for the targeted stimulation of structures of the middle ear are eg from the US 2009/0306458 A1 known. There it is proposed to act by means of an actuator from the outside of the membrane of the round window with movements. Accordingly, in this solution, the perilymph in the cochlea is stimulated only indirectly, namely via the membrane of the round window, whereby the possibilities of influencing the perilymph are limited by the properties of the membrane. Thus, retrograde stimulation of the basilar membrane occurs via the round window.
  • Also known is the Direct Acoustic Cochlear Stimulation (DACS) implant, which directly stimulates the perilymph. In this case, a plunger is guided through a playful hole in the stapes foot plate of the oval window in the inner ear and there excited to oscillate in the perilymph. The disadvantage here is that the relatively small plunger of the implant can cause only correspondingly small volume shifts and, accordingly, can not achieve a large signal transmission. In addition, leaking problems may occur due to the playful bore in the stapes footplate, i. it can leak perilymph from the cochlea. If the implant lingers longer in the patient, the plunger can also grow together with the stapes footplate, so that the function of the implant is no longer satisfactory.
  • From the EP 0 400 630 B1 is an implantable hearing aid known. From US 2010/0 324 355 A1 an apparatus and a method for improving the hearing is known.
  • The invention has for its object to provide an improved middle ear implant that allows efficient signal transmission with good patient compatibility.
  • This object is achieved by a middle ear implant according to claim 1.
  • The invention thus allows an immediate hydraulic loading of the liquid in the cochlea, without this being influenced by the membrane or the stapes foot plate of the oval or round window. In addition, no relative movement in the coupling of the hydraulic master cylinder to the cochlea is required. Rather, the master cylinder or associated hydraulic connection conduit may be passed through an aperture provided in the stapes footplate or the membrane of the round window and sealed within that aperture, e.g. through cement. There is thus no play and, accordingly, no leakage problems can occur since the coupling of the middle ear implant to the cochlea is sealed. Thus, antegrade stimulation of the basilar membrane can be accomplished with the invention.
  • The hydraulic chamber may e.g. be coupled via at least one separation membrane with a cochlea-containing chamber of the cochlea. This makes it possible to use a different liquid in the hydraulic chamber than the liquid located in the cochlea, without causing mixing of the different liquids. The separation membrane may e.g. be attached to the outlet of the hydraulic chamber. The separation membrane can be designed as an extremely thin and flexible membrane.
  • If the liquid present in the cochlea is present in sufficient quantity, there can also be a direct hydraulic connection between the liquid present in the cochlea and the hydraulic chamber of the master cylinder be created so that the hydraulic chamber can also be filled with the liquid in the cochlea. In this way, the liquid present in the cochlea can be used directly to fill the hydraulic chamber with the hydraulic fluid, so that the hydraulic fluid is finally formed by the liquid already present in the cochlea. An additional hydraulic fluid is therefore not required. In this way, the invention can be realized in a biocompatible manner particularly favorable.
  • The invention allows a very efficient stimulation of the basilar membrane. In particular, due to the non-compressible properties of hydraulic media such as the cochlear fluid (perilymph), the basilar membrane can be stimulated particularly efficiently, since comparatively large volume movements can be generated in the fluid. This can be adjusted by appropriate selection of the hydraulic master cylinder to the desired size. In particular, a master cylinder can be selected with relatively large-area mechanical loading element, so that a kind of "hydraulic ratio" can be realized. Thus, a liquid column can be led out of the cochlea and enlarged in the hydraulic master cylinder. Such an enlargement allows even small vibration amplitudes of the actuator to cause large volume shifts in the cochlea.
  • The cochlear fluid in the human cochlea may be the perilymph or a replacement fluid with which the perilymph is replaced.
  • The term "cylinder" in the hydraulic master cylinder is understood in a functional sense. The master cylinder does not have to be exactly cylindrical in shape. Depending on the embodiment, it may also be tapered in the longitudinal direction or similarly non-cylindrical. Of course, the master cylinder can also be designed as a cylindrical component.
  • According to an advantageous embodiment of the invention it is provided that the master cylinder is designed as a piston cylinder, diaphragm cylinder or combination thereof. If the master cylinder is designed as a piston cylinder, then the master cylinder has at least one piston, which is movable in a longitudinal direction in a housing of the master cylinder. If the master cylinder is designed as a diaphragm cylinder, then the master cylinder has at least one diaphragm, which is fastened to the housing of the master cylinder and can be deflected in the sense of bending oscillations. The master cylinder may also be formed as a combination of piston and diaphragm cylinders, e.g. in that an additional membrane is arranged in an inner region of the loading surface of a piston. The piston or the membrane close off the hydraulic chamber liquid-tight. The piston may e.g. have a circumferential piston ring for sealing.
  • If the master cylinder is designed as a piston cylinder, then the mechanical biasing element can be designed as the at least one piston. If the master cylinder is designed as a diaphragm cylinder, then the mechanical urging element can be designed as the at least one diaphragm. If the master cylinder is designed as a combination of piston and diaphragm cylinder, then the mechanical acting element can be designed as at least one combined piston-diaphragm arrangement. In these cases, it is advantageous if the housing of the master cylinder is coupled directly or via at least one hydraulic line to the cochlea-containing chamber of the cochlea.
  • In reverse arrangement, it is also possible that the housing of the master cylinder acts as the mechanical urging member and is acted upon by the actuator. In this case, it is advantageous if the at least one piston, the at least one membrane or the at least one combined piston-membrane arrangement is coupled directly or via at least one hydraulic line to the cochlea-containing chamber of the cochlea.
  • The master cylinder may be round in shape or cross-sectional area of its hydraulic chamber or in any other suitable geometry, e.g. rectangular, square or polygonal. Accordingly, the piston or the membrane is adapted to this geometric shape.
  • According to an advantageous embodiment of the invention it is provided that the master cylinder is liquid-tightly coupled via a seal with the cochlea-containing chamber of the cochlea. In this way, an undesirable escape of liquid from the chamber of the cochlea can be avoided. The seal may e.g. as a separate sealing member or through a fastener in the opening of the stapes footplate, e.g. the mentioned cement, be realized.
  • According to an advantageous embodiment of the invention, it is provided that the master cylinder is guided liquid-tight directly or via at least one hydraulic connection line through an opening of the stapes foot plate of the oval window or an opening of the membrane of the round window of the cochlea. Is the master cylinder led directly through the opening of the stapes foot plate or the membrane of the round window, it is for example also directly attached to the stapes foot plate or the membrane of the round window. If instead a connecting line is used for the connection to the master cylinder, then this is fixed in the opening of the stapes foot plate or the membrane of the round window. In this way, the mechanical loading of the stapes foot plate or the membrane of the round window is minimized by elements arranged thereon. The hydraulic connection line may, as mentioned, be passed through the stapes foot plate or the membrane of the round window, or be introduced into it through another opening in the cochlea.
  • According to an advantageous embodiment of the invention it is provided that the hydraulic connection line is designed as a tube, hose or combination thereof. In this way, the hydraulic connection line can be realized in a simple and secure manner. Thus, the hydraulic connection line may e.g. also be composed of several pieces of pipes and / or hoses. The parts of the hydraulic connection line and their connecting elements should be as rigid as possible in order to avoid energy being lost through elastic deformations.
  • According to an advantageous development of the invention, it is provided that the hydraulic connecting line has a smaller passage cross section than the effective hydraulic loading surface of the mechanical loading element, with which the mechanical loading element comes into contact with the hydraulic fluid present in the hydraulic chamber. In this way, the mentioned "hydraulic ratio" can be realized, i. It can be caused over a large hydraulically effective loading surface, a large volume displacement of the liquid in the cochlea. Accordingly, the signals can be fed particularly efficiently into the basilar membrane.
  • According to an advantageous embodiment of the invention it is provided that the hydraulic connection line is curved one or more times. This has the advantage that directly at the entrance to the cochlea not necessarily all elements of the middle ear implant must be arranged, but only the hydraulic connection line must be connected there. The other elements, such as the master cylinder and / or the actuator, may be further spaced therefrom and routed into more favorable areas of the middle ear which have more space. By such a hydraulic connecting line, the liquid column can be deflected in principle arbitrarily.
  • According to an advantageous development of the invention it is provided that the hydraulic connecting line has at least 0.5 times the length of the diameter of the master cylinder. This allows a favorable accommodation of the master cylinder at a certain distance from the entrance to the cochlea.
  • According to an advantageous development of the invention it is provided that the hydraulic connecting line is formed in several parts with at least one connecting piece between adjacent line sections. This allows flexible installation options of the components of the middle ear implant on the patient. The connector may e.g. be designed as a plug-in connection element, similar to a connector. In this way, the individual line sections of the hydraulic connection line can be easily assembled and separated again.
  • According to an advantageous embodiment of the invention it is provided that the actuator is designed as an electromechanical and / or piezoelectric actuator. If the actuator is designed as an electromechanical actuator, then e.g. an electromagnet arrangement for the mechanical loading of the master cylinder be present. In this way, a reliable and compact actuator can be realized.
  • The mechanical biasing member of the master cylinder may be e.g. be coupled via a coupling rod with the actuator, e.g. a piston rod of a piston when the master cylinder is designed as a piston cylinder. The actuator may also be coupled directly to the master cylinder, e.g. such that a movement surface of the actuator, which emits the mechanical movement delivered by the actuator, is connected directly to the mechanical loading element of the master cylinder.
  • The invention will be explained in more detail by means of embodiments using drawings.
  • Show it
    • 1 a schematic representation of the unrolled cochlea of a human and
    • 2 - A first embodiment of a hydraulic master cylinder to a cochlea and
    • 3 - A second embodiment of a hydraulic master cylinder to a cochlea and
    • 4 - The coupling of a middle ear implant to the cochlea.
  • In the figures, like reference numerals are used for corresponding elements.
  • The cochlea is part of the mammalian inner ear. Due to its spiral-shaped structure, which is sometimes called snail-shaped, it is also known as the cochlea in the German language. To simplify the illustration, the cochlea is 1 in the 1 to 3 in a stretched representation reproduced in a simplified form. There are two recognizable in the cochlea 1 formed chambers 11 . 12 , namely the Scala Vestibuli 11 and the Scala Tympani 12 passing through the basilar membrane 10 are separated from each other. Both chambers 11 . 12 are with liquid 19 filled, the so-called Perilymph. The chambers 11 . 12 are via a connection point 13 connected with each other. At the entrance to the cochlea 1 is on the side of the chamber 11 the so-called oval window 14 that in the 1 below the cochlea 1 is enlarged in front view reproduced. The chamber 12 is through the underlying, so-called round window 17 limited in the 1 below the cochlea 1 also enlarged in front view is reproduced. The round window 17 is a membrane made of a soft membranous tissue 18 locked. The oval window 14 is due to the comparatively hard, bony stapes footplate 16 and a surrounding membrane ring (Ligular Anulares Stapedis) 15 locked. Accordingly, the arrangement is at the oval window 14 much stiffer than the round window 17 , which limits the achievable vibration amplitudes of the entire inner ear system. Meets an acoustic vibration 25 as by the arrow 26 shown on the stapes footplate 16 , it is stimulated to vibrate. This leads to a volume shift 27 the liquid 19 in the chamber 11 that leads to a vibration 28 the basilar membrane 10 leads. This is decisive for the intensity of the listening impression. The one in the chamber 11 emerging pressure waves are over the junction 13 , the chamber 12 and the relatively soft membrane 18 cushioned and sound accordingly.
  • For completeness, it should be mentioned that the Scala Media is still present, which is not shown in the figures. The Scala Media is separated from the Scala Vestibuli only by the very thin Reissner membrane, i. the separation is predominantly chemical and not mechanical. The Scala Media is not filled with perilymph but with endolymph.
  • The 2 shows the inventive coupling of a hydraulic master cylinder 3 to those already using the 1 explained Cochlea 1 , For mounting the master cylinder 3 gets in the stapes footplate 16 operationally created an opening. Through this opening, the hydraulic master cylinder 3 connected, eg by a hydraulic connection line 2 , The hydraulic connection line 2 can eg via a seal 20 in the stapes foot plate 16 be attached sealed. The hydraulic master cylinder 3 then fills with the liquid 19 out of the chamber 11 , This can be done, for example, that the piston 31 first fully retracted and then slowly pulled out.
  • The hydraulic master cylinder 3 is in the embodiment of 2 designed as a piston cylinder. He points as a mechanical Beaufschlagungselement 31 a piston in a housing 30 of the master cylinder 3 is movable back and forth in the longitudinal direction, as by the arrow 32 indicated. Will the mechanical loading element 31 with mechanical movements, ie vibrations applied, this leads to pressure waves in the liquid 19 inside the hydraulic chamber 34 extending over the hydraulic connecting line 2 in the chamber 11 continue and to the desired vibration excitation of the basilar membrane 10 to lead.
  • The 3 shows an embodiment of the invention, in which as a master cylinder 3 a diaphragm cylinder is used. This points as a mechanical Beaufschlagungselement 33 a bendable by bending vibrations membrane, which corresponds to the arrow 32 through the in the 2 and 3 not shown actuator can be moved back and forth.
  • Another difference to 2 is that the hydraulic connection line example of three line sections 21 . 22 . 23 is formed, which are connected to each other liquid-tight. In this way, the hydraulic master cylinder 3 and the associated actuator further away from the entrance to the cochlea 1 be positioned, for example, at a location where appropriate space is available.
  • The 4 shows in a highly schematic way the essential components of a middle ear implant and their connection to the cochlea 1 , For example, a middle ear implant has components to be arranged outside the body of the patient and components to be arranged within the body, ie, only the latter components are implanted. This is in the 4 through the line A indicated. The components to the left of the line A are not implanted, ie they are located outside the body, while the components are to the right of the line A are arranged within the body.
  • The components located outside the body include a microphone 9 Using an extracorporeal electronic signal processing unit 8th , eg with microprocessor control 80 , connected is. The signal processing unit 8th processes those from the microphone 9 coming electrical signals in corresponding drive signals for the components of the middle ear implant located in the body. The drive signals are via a wireless data link 60 from a transmitting device 7 to a receiving device arranged in the body 6 transmitted, eg via inductive coupling by coils. The in the receiving device 6 recorded drive signals are an intracorporeal electronic signal processing unit 5 which also has a microprocessor control 50 may have supplied. Here, the actual electrical drive signals for an electric to the signal processing unit 5 connected actuator 4 generated. The actuator 4 is an electromechanical actuator, ie a unit that is the signal processing unit 5 converts incoming electrical control signals into a mechanical movement. The from the actuator 4 generated mechanical movement is via a mechanical coupling 40 on the mechanical loading element 31 of the master cylinder 3 transfer. This will be the actuator 4 delivered mechanical movement, for example, a vibration, also from the mechanical Beaufschlagungselement 31 executed.
  • The hydraulic chamber 34 of the master cylinder 3 is with the liquid 19 from the cochlea 1 filled. That of the mechanical loading element 31 executed movement becomes in pressure waves within the liquid 19 changed. These are via the hydraulic connection line 2 through the opening in the stapes footplate 16 in the chamber 11 the cochlea 1 fed and cause the desired deflection of the basilar membrane 10 ,

Claims (10)

  1. Middle ear implant for direct mechanical stimulation of the cochlea fluid (19) in the human cochlea (1), the middle ear implant comprising at least: a) an electronic signal processing unit (5, 8) adapted to process a received signal by means of a Electronics, b) an actuator (4), which is coupled to the electronic signal processing unit (5, 8) and is acted upon by this electrical drive signals corresponding to the processed received signal, wherein the actuator (4) is adapted to generate a mechanical Movement in response to the action of the electrical control signals, characterized in that the middle ear implant has at least the following: c) one of the actuator (4) separate hydraulic master cylinder (3), the at least one mechanical biasing element (31, 33) and at least one with a Hydraulic fluid to be filled Hydrauli d) the mechanical loading element (31, 34) is mechanically coupled to the actuator (4) and e) the hydraulic chamber (34) hydraulically directly or via at least one separating membrane with a cochlea liquid (19) f) so that by mechanical movements, which are discharged from the actuator (4) as a result of the action of the electrical drive signals by the master cylinder (3) hydraulic Pressure waves in the cochlear fluid (19) are directly fed.
  2. Middle ear implant according to the preceding claim, characterized in that the master cylinder (3) is designed as a piston cylinder, diaphragm cylinder or combination thereof.
  3. Middle ear implant according to one of the preceding claims, characterized in that the master cylinder (3) via a seal (20) liquid-tight with the cochlea liquid (19) containing chamber (11, 12) of the cochlea (1) is coupled.
  4. Middle ear implant according to one of the preceding claims, characterized in that the master cylinder (3) directly or via at least one hydraulic connection line (2) liquid-tight through an opening of the stapes foot plate (16) of the oval window (14) or an opening of the membrane (18 ) of the round window (17) of the cochlea (1) is guided.
  5. Middle ear implant according to the preceding claim, characterized in that the hydraulic connecting line (2) is designed as a tube, hose or combination thereof.
  6. Middle ear implant after one of Claims 4 to 5 characterized in that the hydraulic connection line (2) has a smaller passage cross-section than the effective hydraulic loading surface of the mechanical loading element (31, 33), with which the mechanical loading element (31, 33) in contact with that in the hydraulic chamber (34) hydraulic fluid comes.
  7. Middle ear implant after one of Claims 4 to 6 , characterized in that the hydraulic connecting line (2) is curved one or more times.
  8. Middle ear implant according to one of the preceding claims, characterized in that the hydraulic connecting line (2) has at least 0.5 times the length of the diameter of the master cylinder (3).
  9. Middle ear implant according to one of the preceding claims, characterized in that the hydraulic connecting line (2) is designed in several parts with at least one connecting piece (22) between adjacent line sections (21, 23).
  10. Middle ear implant according to one of the preceding claims, characterized in that the actuator (4) is designed as an electromechanical and / or piezoelectric actuator.
DE102016107517.5A 2016-04-22 2016-04-22 Middle ear implant Active DE102016107517B4 (en)

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DE102016107517.5A DE102016107517B4 (en) 2016-04-22 2016-04-22 Middle ear implant

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Application Number Priority Date Filing Date Title
DE102016107517.5A DE102016107517B4 (en) 2016-04-22 2016-04-22 Middle ear implant

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DE102016107517B4 true DE102016107517B4 (en) 2019-06-06

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0400630A2 (en) 1989-06-02 1990-12-05 IMPLEX GmbH Spezialhörgeräte Implantable hearing aid
US20090306458A1 (en) 2008-03-31 2009-12-10 Cochlear Limited Direct acoustic cochlear stimulator for round window access
US20100324355A1 (en) * 2006-12-26 2010-12-23 3Win N.V. Device and method for improving hearing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0400630A2 (en) 1989-06-02 1990-12-05 IMPLEX GmbH Spezialhörgeräte Implantable hearing aid
US20100324355A1 (en) * 2006-12-26 2010-12-23 3Win N.V. Device and method for improving hearing
US20090306458A1 (en) 2008-03-31 2009-12-10 Cochlear Limited Direct acoustic cochlear stimulator for round window access

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