EP0969696A2 - Appareil medical implantable - Google Patents

Appareil medical implantable Download PDF

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Publication number
EP0969696A2
EP0969696A2 EP98115845A EP98115845A EP0969696A2 EP 0969696 A2 EP0969696 A2 EP 0969696A2 EP 98115845 A EP98115845 A EP 98115845A EP 98115845 A EP98115845 A EP 98115845A EP 0969696 A2 EP0969696 A2 EP 0969696A2
Authority
EP
European Patent Office
Prior art keywords
housing
medical implant
implant according
range
angle
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.)
Withdrawn
Application number
EP98115845A
Other languages
German (de)
English (en)
Inventor
Gabriele E. Dipl.-Ing. Reischl (FH)
Rolf Martin Dipl.-Ing. Lehner
Dieter Dr. Müller
Hans Dr.-Ing. Dipl.-Ing. Leysieffer
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.)
Cochlear Ltd
Original Assignee
Implex GmbH
Implex Spezialhorgerate GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Implex GmbH, Implex Spezialhorgerate GmbH filed Critical Implex GmbH
Publication of EP0969696A2 publication Critical patent/EP0969696A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a medical implant for implantation in a Outside of the skull, especially in the area of the planum mastoid Bone bed is suitable and has a hermetically sealed housing, in which an electronic arrangement and possibly further components or Assemblies are housed.
  • Implants of this type are, inter alia, from DE 39 18 086 C1 and DE 39 18 329 A1 known.
  • Size especially the depth, of the bone bed must be kept as small as possible and is limited by the anatomical conditions, and that on the other hand a An unwanted protrusion of the housing over the outer edge of the bone bed Bulging of the skin over the implant would result and therefore as far as possible is possible to avoid.
  • the problem worsens the larger the volume requirement in the housing, for example because of the complexity of the electronics to be accommodated or other components, such as a power supply unit or parts of one such unity.
  • the flexibility of the flap adapts to the shape of the skull, is however with regard to a risk of breaking the connections between those in the Rag added components and the components problematic in the Titanium case are housed.
  • the thickness of the flexible flap is that is maximum permissible so that the skin over the rag does not interfere bulges, so severely restricted that this solution also for many reasons of space Implant components.
  • the invention has for its object a medical implant of the beginning to create the type mentioned, which allows, given a given size, in particular depth, the bone bed to provide a particularly large housing volume, while at the same time, a projection of the housing completely over the outer wheel of the bone bed or at least largely avoided.
  • a medical Implant that is intended for implantation in one on the outside of the skull, in particular in the area of the planum mastoid, trained bone bed is suitable and has a hermetically sealed housing in which an electronic arrangement and, if necessary, further components or assemblies are accommodated Housing is provided in at least one level with at least one kink that is dimensioned such that a tangent to a plane perpendicular to the direction of buckling the bottom of the housing at one end of the housing with a tangent to the bottom of the housing at the other end of the housing forms an angle in the range of 5 ° to 25 °.
  • the housing is preferably in the region of its middle third, in particular approximately in the middle, in at least one plane through an angle in the range of 5 ° to 25 ° kinked.
  • the housing in at least to bend or bend a layer several times.
  • the angle that the tangents to the bottom of the case on one and the other Forming the housing end together is preferably in the range of 7 ° to 15 °. As An angle of approximately 10 ° has proven particularly favorable.
  • the largest dimension of the housing is in Range from 30 to 55 mm, and preferably in the range from 38 to 50 mm, while the direction of buckling is perpendicular to this largest dimension.
  • the smallest dimension (thickness) of the housing is expediently in the range from 4 to 8 mm.
  • the housing is advantageously rigid, which creates mechanical stresses the components housed therein and their mutual connections as far as possible be avoided.
  • the housing can at least partly consist of ceramic material and in particular with a Ceramic housing part and a metal housing part.
  • a housing training leads to a housing that is at least partially for electrical, magnetic and electromagnetic fields is transparent. This is essential if, for example a receiving and / or transmitting antenna is to be accommodated in the housing.
  • the housing can also be a metal housing.
  • a housing with a ceramic housing part and a metal housing part advantageous the kink near the meeting point of the ceramic housing part and metal housing part.
  • an energy supply unit or the implantable part of such a unit and an electronics unit his.
  • the implant can in particular be part of an at least partially implantable Hearing aid, in particular an active hearing aid for mechanical or electrical irritation of the inner ear, such as that described in DE 39 18 086 C1, DE 39 18 329 A1, DE 39 40 632 C1, DE 41 04 359 C2 and US Pat. No. 4,419,995 are known or are described in the older DE patent application 196 38 159.2.
  • the invention is in no way limited to this. Rather, it is suitable in in the same way for any other implants in which the implantation site is Skull, especially in the area of the planum mastoid, comes into question. Examples of such implants, to name a few, are tinnitus suppression systems, Drug pumps and retinal stimulators.
  • the illustrated implant 10 has a housing 11 with a ceramic housing part 12 and a metal housing part 13.
  • the housing 11 is inserted into a bone bed 14, that on the outside 15 of a skull cap 16, in particular in the area of the Planum mastoid, is formed.
  • the ceramic housing part 12 the receiving coil of an energy charging system for recharging an energy store of the implant.
  • an energy charging system is from DE 41 04 359 C2 is known and therefore does not require any further explanation in the present case.
  • the Metal housing part 13 can accommodate an electronic module that is connected to the receiving coil is in electrical connection and is fed from the rechargeable energy store.
  • the electronics module can in turn be part of an active hearing aid for mechanical or electrical irritation to the middle ear.
  • Such electronic modules can also trained in a conventional manner (see the references mentioned above) his.
  • the housing 11 is in the region of its middle One-third kinked, the kink line 18 running perpendicular to the longitudinal dimension of the housing.
  • the kink 18 is near the meeting point of the ceramic housing part 12 and Metal housing part 13.
  • the kink is dimensioned such that in one to the direction of buckling vertical plane a tangent to the housing bottom 19 at one Housing end 20 with a tangent to the housing underside at the other housing end 21 forms an angle ⁇ in the range from 5 ° to 25 °.
  • The is preferably Angle ⁇ about 10 °.
  • the largest dimension of the housing 11, that is Longitudinal housing dimension can suitably be in the range of 30 to 55 mm, and the housing 11 can generally have a smallest dimension (thickness) in the range of 4 to 8 mm.
  • One or more connecting cables 23 can be made from the hermetically sealed housing 11 be led out.
  • a contact arrangement of the type known from DE 196 22 669 A1 can be provided, these Contact arrangement sits under a removable cover 25 of the implant 10.
  • the aforementioned reception coil is shown schematically at 26 in FIG. 2.
  • the coil 26 can additionally or instead also be used as a transmitter coil, for example around To transmit information from the implant to an extracorporeal receiving device.
  • FIG. 4 shows a housing 11 'which is bent twice, while in FIG. 5 a curved one Housing 11 '' is illustrated. This is also a requirement for housings 11 'and 11' ' fulfilled that in a plane perpendicular to the direction of buckling a tangent to the underside of the housing 19 at one housing end 20 with a tangent to the housing underside at the other housing end 21 forms an angle ⁇ in the range from 5 ° to 25 °.
  • the housing materials can be selected in a known manner.
  • metallic materials come in particular titanium, titanium alloys, niobium, niobium alloys, cobalt-chromium alloys and stainless steels are considered, which are biocompatible and corrosion-resistant are.
  • Suitable ceramic materials include aluminum oxide and boron nitride.
EP98115845A 1998-07-02 1998-08-21 Appareil medical implantable Withdrawn EP0969696A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19829637A DE19829637C2 (de) 1998-07-02 1998-07-02 Medizinisches Implantat
DE19829637 1998-07-02

Publications (1)

Publication Number Publication Date
EP0969696A2 true EP0969696A2 (fr) 2000-01-05

Family

ID=7872796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98115845A Withdrawn EP0969696A2 (fr) 1998-07-02 1998-08-21 Appareil medical implantable

Country Status (5)

Country Link
US (1) US6176879B1 (fr)
EP (1) EP0969696A2 (fr)
AU (1) AU760215B2 (fr)
CA (1) CA2265221C (fr)
DE (1) DE19829637C2 (fr)

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DE60107062T2 (de) * 2000-03-31 2005-11-24 Advanced Bionics Corp., Sylmar Vollständig implantierbare cochlea-microprothese mit einer vielzahl von kontakten
US6517476B1 (en) * 2000-05-30 2003-02-11 Otologics Llc Connector for implantable hearing aid
US7069080B2 (en) 2000-09-18 2006-06-27 Cameron Health, Inc. Active housing and subcutaneous electrode cardioversion/defibrillating system
US6721597B1 (en) 2000-09-18 2004-04-13 Cameron Health, Inc. Subcutaneous only implantable cardioverter defibrillator and optional pacer
US6754528B2 (en) 2001-11-21 2004-06-22 Cameraon Health, Inc. Apparatus and method of arrhythmia detection in a subcutaneous implantable cardioverter/defibrillator
US7146212B2 (en) * 2000-09-18 2006-12-05 Cameron Health, Inc. Anti-bradycardia pacing for a subcutaneous implantable cardioverter-defibrillator
US7120495B2 (en) * 2000-09-18 2006-10-10 Cameron Health, Inc. Flexible subcutaneous implantable cardioverter-defibrillator
US7194302B2 (en) 2000-09-18 2007-03-20 Cameron Health, Inc. Subcutaneous cardiac stimulator with small contact surface electrodes
US8123814B2 (en) 2001-02-23 2012-02-28 Biomet Manufacturing Corp. Method and appartus for acetabular reconstruction
US7597715B2 (en) 2005-04-21 2009-10-06 Biomet Manufacturing Corp. Method and apparatus for use of porous implants
US7288085B2 (en) * 2001-04-10 2007-10-30 Medtronic, Inc. Permanent magnet solenoid pump for an implantable therapeutic substance delivery device
US6738672B2 (en) * 2001-06-18 2004-05-18 The Alfred E. Mann Foundation For Scientific Research Miniature implantable connectors
DE60235598D1 (de) * 2001-07-19 2010-04-22 Greatbatch Ltd Gewölbtes Gehäuse für eine implantierbare medizinische Vorrichtung
US6977124B2 (en) * 2001-07-19 2005-12-20 Wilson Greatbatch Technologies, Inc. Contoured casing for an electrochemical cell
AU2002363103B2 (en) * 2001-10-24 2008-10-16 Med-El Elektromedizinische Gerate Ges.M.B.H. Implantable fluid delivery apparatuses and implantable electrode
US20070088335A1 (en) * 2001-10-24 2007-04-19 Med-El Elektromedizinische Geraete Gmbh Implantable neuro-stimulation electrode with fluid reservoir
US7596408B2 (en) * 2002-12-09 2009-09-29 Medtronic, Inc. Implantable medical device with anti-infection agent
EP1578493A1 (fr) * 2002-12-09 2005-09-28 Medtronic, Inc. Dispositif medical implantable modulaire
WO2004089240A2 (fr) * 2003-04-04 2004-10-21 Theken Disc, Llc Prothese de disque artificiel
US7263401B2 (en) * 2003-05-16 2007-08-28 Medtronic, Inc. Implantable medical device with a nonhermetic battery
US20050003268A1 (en) * 2003-05-16 2005-01-06 Scott Erik R. Battery housing configuration
US20050004637A1 (en) * 2003-05-16 2005-01-06 Ruchika Singhal Explantation of implantable medical device
US7317947B2 (en) * 2003-05-16 2008-01-08 Medtronic, Inc. Headset recharger for cranially implantable medical devices
WO2005041812A2 (fr) * 2003-10-22 2005-05-12 Implant Brace, Inc. Dispositif orthopedique implantable en cas de fracture et methodes
US7596399B2 (en) * 2004-04-29 2009-09-29 Medtronic, Inc Implantation of implantable medical device
US20050245984A1 (en) * 2004-04-30 2005-11-03 Medtronic, Inc. Implantable medical device with lubricious material
US7887587B2 (en) * 2004-06-04 2011-02-15 Synthes Usa, Llc Soft tissue spacer
BRPI0511838A (pt) * 2004-06-07 2008-01-15 Synthes Gmbh implante, placa óssea, método para emendar um osso quebrado, e, sistema de monitoramento
US7794499B2 (en) * 2004-06-08 2010-09-14 Theken Disc, L.L.C. Prosthetic intervertebral spinal disc with integral microprocessor
US7231256B2 (en) * 2005-03-11 2007-06-12 Medtronic, Inc. Neurostimulation site screening
US7555345B2 (en) * 2005-03-11 2009-06-30 Medtronic, Inc. Implantable neurostimulator device
US8066778B2 (en) * 2005-04-21 2011-11-29 Biomet Manufacturing Corp. Porous metal cup with cobalt bearing surface
US8266780B2 (en) * 2005-04-21 2012-09-18 Biomet Manufacturing Corp. Method and apparatus for use of porous implants
US8292967B2 (en) * 2005-04-21 2012-10-23 Biomet Manufacturing Corp. Method and apparatus for use of porous implants
US8021432B2 (en) 2005-12-05 2011-09-20 Biomet Manufacturing Corp. Apparatus for use of porous implants
US7635447B2 (en) * 2006-02-17 2009-12-22 Biomet Manufacturing Corp. Method and apparatus for forming porous metal implants
AR059786A1 (es) * 2006-03-09 2008-04-30 Med El Elektromed Geraete Gmbh Configuracion de electrodo de implante coclear para eluir farmacos
US9084901B2 (en) * 2006-04-28 2015-07-21 Medtronic, Inc. Cranial implant
EP1870130A1 (fr) * 2006-06-19 2007-12-26 Lifestim S.r.l. Stimulateur électrique implantable avec boitier courbé
EP2205188B1 (fr) * 2007-09-25 2014-04-09 Biomet Manufacturing Corp. Plateau tibial sans ciment
US9008782B2 (en) 2007-10-26 2015-04-14 Medtronic, Inc. Occipital nerve stimulation
US20090281623A1 (en) * 2008-05-12 2009-11-12 Medtronic, Inc. Customization of implantable medical devices
US20100030227A1 (en) * 2008-07-31 2010-02-04 Medtronic, Inc. Medical lead implantation
EP2337607B1 (fr) * 2008-10-15 2018-06-13 Med-El Elektromedizinische Geräte GmbH Dispositif d administration de médicaments dans l oreille interne
US9393432B2 (en) 2008-10-31 2016-07-19 Medtronic, Inc. Non-hermetic direct current interconnect
CA2745453C (fr) 2008-11-10 2015-06-16 Med-El Elektromedizinische Geraete Gmbh Reservoirs d'administration de medicaments remplis d'hydrogel
US10912648B2 (en) 2016-08-30 2021-02-09 Longeviti Neuro Solutions Llc Method for manufacturing a low-profile intercranial device and the low-profile intercranial device manufactured thereby

Citations (5)

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Publication number Priority date Publication date Assignee Title
US4419995A (en) 1981-09-18 1983-12-13 Hochmair Ingeborg Single channel auditory stimulation system
DE3918086C1 (fr) 1989-06-02 1990-09-27 Hortmann Gmbh, 7449 Neckartenzlingen, De
DE3918329A1 (de) 1989-06-05 1990-12-06 Hortmann Gmbh Hoergeraet zur elektrischen reizung des innenohres
US4991582A (en) 1989-09-22 1991-02-12 Alfred E. Mann Foundation For Scientific Research Hermetically sealed ceramic and metal package for electronic devices implantable in living bodies
DE4104359C2 (fr) 1991-02-13 1992-11-19 Implex Gmbh, 7449 Neckartenzlingen, De

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Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
US4419995A (en) 1981-09-18 1983-12-13 Hochmair Ingeborg Single channel auditory stimulation system
DE3918086C1 (fr) 1989-06-02 1990-09-27 Hortmann Gmbh, 7449 Neckartenzlingen, De
DE3940632C1 (en) 1989-06-02 1990-12-06 Hortmann Gmbh, 7449 Neckartenzlingen, De Hearing aid directly exciting inner ear - has microphone encapsulated for implantation in tympanic cavity or mastoid region
DE3918329A1 (de) 1989-06-05 1990-12-06 Hortmann Gmbh Hoergeraet zur elektrischen reizung des innenohres
US4991582A (en) 1989-09-22 1991-02-12 Alfred E. Mann Foundation For Scientific Research Hermetically sealed ceramic and metal package for electronic devices implantable in living bodies
DE4104359C2 (fr) 1991-02-13 1992-11-19 Implex Gmbh, 7449 Neckartenzlingen, De

Also Published As

Publication number Publication date
DE19829637C2 (de) 2000-10-19
AU760215B2 (en) 2003-05-08
CA2265221A1 (fr) 2000-01-02
DE19829637A1 (de) 2000-01-20
US6176879B1 (en) 2001-01-23
AU2697099A (en) 2000-01-20
CA2265221C (fr) 2002-05-28

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