[go: up one dir, main page]

EP0328597A1 - Appareil et procede d'introduction d'une unite a electrode cochleaire - Google Patents

Appareil et procede d'introduction d'une unite a electrode cochleaire

Info

Publication number
EP0328597A1
EP0328597A1 EP88907147A EP88907147A EP0328597A1 EP 0328597 A1 EP0328597 A1 EP 0328597A1 EP 88907147 A EP88907147 A EP 88907147A EP 88907147 A EP88907147 A EP 88907147A EP 0328597 A1 EP0328597 A1 EP 0328597A1
Authority
EP
European Patent Office
Prior art keywords
lead
collar
electrode
gripping tool
electrode lead
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Withdrawn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
EP88907147A
Other languages
German (de)
English (en)
Other versions
EP0328597A4 (en
Inventor
Janusz Kuzma
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
Cochlear Ltd
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 Cochlear Ltd filed Critical Cochlear Ltd
Publication of EP0328597A1 publication Critical patent/EP0328597A1/fr
Publication of EP0328597A4 publication Critical patent/EP0328597A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/04—Electrodes
    • A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
    • A61N1/0526—Head electrodes
    • A61N1/0541—Cochlear electrodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/20—Ear surgery

Definitions

  • This invention relates to an insertion tool for a cochlear implant, and a method for using that tool to insert a cochlear electrode lead into a patient's ear.
  • the stimulating electrode assembly of a cochlear implant is placed inside the cochlear partition, commonly into the scala tympani.
  • a major problem with conventional electrode leads is in inserting them into the cochlea without irreversibly damaging the auditory nerve fibers, and the electrodes and lead wires of the electrode lead.
  • electrode leads are surgically inserted along the line of sight through the round window and along the basal turn of the cochlea, either with an alligator forceps or with Y-shaped claws.
  • the alligator forceps adequately control the force and direction of the electrode insertion, but risk of damage to the electrodes is high.
  • the forceps also must be periodically removed and replaced to correctly orient the electrode array in the cochlea, since it can grip the electrode lead only through a limited angle of rotation.
  • the Y-shaped claws minimize damage to the electrode, but it cannot be used to apply insertion force in the optimum direction, along the line of sight. Since it cannot grip the electrode lead, it also cannot be used to rotate the electrode to correctly place it in the cochlea.
  • An object of my invention is to provide an insertion tool and a technique for insertion of the electrode lead which both protects the electrode assembly and allows successful manipulation of the electrode lead into the cochlea.
  • the electrode lead is provided with a collar, preferably made of silicone rubber.
  • the collar is affixed to the rear of the electrode lead at a predetermined point above the electrode assembly.
  • the collar is expanded in Freon or
  • Glue preferable silastic A
  • the insertion or gripping tool has a rounded end, configured like a thumbnail at the tip, designed to fit between the collar and the lead.
  • a major advantage of my invention is that the squeeze or friction fit of the gripping tool to the electrode lead (through the collar) completely prohibits possible damage to the electrode array as may occur with use of alligator forceps. This mode of attachment also permits optimum application of the insertion force directly along the axis. Further, the surgeon can use the gripping tool to rotate the electrode lead without fear that the tool will slip off the lead and damage the electrode assembly or the delicate tissues of the patient's ear. This contrasts with the prior art Y-shaped claws which cannot be used to apply force along the line of sight or to grip and rotate the electrode lead.
  • My invention can also be used with both symmetric and non-symmetric electrodes.
  • the gripping tool is placed under the collar so that 0 '
  • the active electrodes e.g. 180 degrees away
  • a mark is placed on the front of the handle of the gripping tool so that when the surgeon inserts the electrode lead into the cochlea and the electrode assembly is no longer visible, the surgeon is able to determine he orienta ⁇ tion of the active electrodes and to rotate the electrode lead to correctly place the active electrode assembly in the cochlea.
  • the placement of the tool with respect to the array is not important.
  • the gripping tool is removed by sliding it along the axis of the lead; the lead can be held steady (so that removal of the tool does not remove the lead) by temporary placement of the Y-shaped claws on the collar.
  • FIG. 1A is an illustration of a prior art non- symmetric electrode lead
  • FIG. IB is an illustration of a prior art symmetric electrode lead
  • FIG. 2 illustrates the prior art method of inserting the electrode lead into the cochlea
  • FIGS. 3A-C illustrate the preferred method of
  • FIG. 4A is an illustration of the gripping tool
  • FIG. 4B is an enlarged view of the tip of the gripping tool
  • FIG. 5A-C illustrate the preferred method of u ⁇ in ⁇ the insertion tool with the electrode lead.
  • Fig. 1A is an illustration of a prior art non- symmetric or localized electrode lead 2, with active electrodes 4 and electrode lead wires 6.
  • Fig. IB shows a prior art symmetric or banded electrode lead 8, with active electrodes 10 and electrode lead wires 12.
  • the prior art method of inserting an electrode lead into the cochlea is shown in Fig. 2. To achieve insertion, force must be - 4 -
  • a collar is placed on the electrode lead to the rear of the electrode assembly.
  • Figs. 3A-3C the preferred method of placing collar 20 around electrode lead 8 is illustrated.
  • a 5-6mm length collar 20 made of silastic tubing, silicone rubber or other suitable material, is slipped over the front end of lead 8 to rest at a point approximately 26mm behind the last electrode.
  • Collar 20 is expanded in Freon to produce an inner diameter of 0.6 mm, which is slightly larger than the outer diameter of electrode lead 8, so as to facilitate placement of collar 20 over lead 8 and to allow for a snug friction fit after evaporation of the Freon.
  • Collar 20 has a wall thickness of
  • Fig. 3B shows the placement of collar 20 on lead
  • FIGs. 4A and 4B show gripping tool 24 which is adapted for use with collar 20.
  • FIG. 4A is an illustration of gripping tool 24, with a 110 mm length handle 26 and a
  • Fig. 4B is an enlarged view of the front of tip 28, with all sharp edges removed to form a rounded end
  • rounded end 30 is placed gently under the rear end of collar 20, allowing the tip of the insertion tool to be attached to lead 8, removed - 5 -
  • Fig. 5B is an enlarged view of the location of rounded groove 30 under collar 20.
  • This technique of attachment permits the surgeon to apply force directly along the axis r in the optimum direction along the line of sight through the round window. Possible damage to the electrode lead is minimized, and the surgeon does not need to periodically remove and replace the gripping tool to push the lead forward.
  • the friction fit of the gripping tool to the lead also permits the surgeon to rotate the lead and correctly orient it in- the cochlea without fear that the tool may slip off the lead.
  • the gripping tool is placed 180 degrees from active electrodes 4, and a mark is placed on the front of handle 26, indicated the direction of the active elec ⁇ trodes. This enables the surgeon to determine the location of active electrodes 4 when the lead has been inserted through the round window and the active electrodes are no longer visible, permitting the surgeon to correctly orient the active electrodes with respect to the cochlear nerves.
  • the collar is located outside the round window. Removal of the gripping tool from the collar is accomplished by sliding the tool along the axis of the lead; the lead can be held steady (so that removal of the tool does not remove the electrode assembly from the cochlea) by the temporary placement of prior art Y-shaped claws on the collar.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Psychology (AREA)
  • Biophysics (AREA)
  • Acoustics & Sound (AREA)
  • Surgery (AREA)
  • Cardiology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Electrotherapy Devices (AREA)
  • Prostheses (AREA)

Abstract

L'appareil et le procédé décrits servent à introduire un implant cochléaire. Le procédé consiste à faire glisser une bague (20) sur l'extrémité postérieure de la tête (2) d'une électrode cochléaire (4), à appliquer de la colle sur l'extrémité antérieure de la bague et à placer un outil de préhension (24) dont la forme est conçue pour permettre son placement par serrage par pression dans l'extrémité postérieure libre de la bague.
EP19880907147 1987-07-24 1988-07-22 Apparatus and method for insertion of cochlear electrode assembly Withdrawn EP0328597A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7744587A 1987-07-24 1987-07-24
US77445 1987-07-24

Publications (2)

Publication Number Publication Date
EP0328597A1 true EP0328597A1 (fr) 1989-08-23
EP0328597A4 EP0328597A4 (en) 1992-07-08

Family

ID=22138097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880907147 Withdrawn EP0328597A4 (en) 1987-07-24 1988-07-22 Apparatus and method for insertion of cochlear electrode assembly

Country Status (4)

Country Link
EP (1) EP0328597A4 (fr)
JP (1) JPH02500814A (fr)
AU (1) AU605343B2 (fr)
WO (1) WO1989000870A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8452421B2 (en) 2009-07-08 2013-05-28 Advanced Bionics, Llc Lead insertion tools
US8753352B2 (en) 2010-06-25 2014-06-17 Advanced Bionics Ag Tools, systems, and methods for inserting a pre-curved electrode array portion of a lead into a bodily orifice
US8753353B2 (en) 2010-06-25 2014-06-17 Advanced Bionics Ag Tools, systems, and methods for inserting an electrode array portion of a lead into a bodily orifice
US8774944B2 (en) 2010-06-25 2014-07-08 Advanced Bionics Ag Tools, systems, and methods for inserting an electrode array portion of a lead into a bodily orifice
US8915926B2 (en) 2006-11-08 2014-12-23 Advanced Bionics Ag Pre-curved electrode array loading tools
US8939993B1 (en) 2006-11-08 2015-01-27 Advanced Bionics Ag Pre-curved electrode array loading tools
US9474546B1 (en) 2008-04-18 2016-10-25 Advanced Bionics Ag Pre-curved electrode array insertion tools

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69733813T2 (de) * 1996-02-26 2006-03-16 Med-El Elektromedizinische Geräte GmbH Implantierbare hörprothese
US6968238B1 (en) 1998-08-26 2005-11-22 Kuzma Janusz A Method for inserting cochlear electrode and insertion tool for use therewith
JP4354656B2 (ja) * 1999-05-21 2009-10-28 コックレア リミティド 蝸牛インプラント電極配列
EP1370205B1 (fr) 2001-03-19 2013-08-14 Cochlear Limited Systeme d'outil d'insertion pour reseau d'electrodes
JP2005517493A (ja) 2002-02-22 2005-06-16 コークリア リミテッド 電極アレー用挿入装置
US8954169B2 (en) 2010-05-07 2015-02-10 Advanced Bionics Ag Systems and methods for loading a pre-curved electrode array onto a straightening member
WO2011140452A2 (fr) 2010-05-07 2011-11-10 Advanced Bionics Ag Systèmes et procédés de chargement d'une rangée d'électrodes pré-incurvées sur un élément de redressage
CN111544771B (zh) * 2020-05-18 2023-06-23 中国医学科学院北京协和医院 人工耳蜗电极植入装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK140364B (da) * 1977-11-22 1979-08-13 Carl Christian Hansen Elektrode til indsætning i ørets snegl (cochlea), fremgangsmåde til dens fremstilling og hjælpeværktøj til anvendelse i forbindelse med elektroden.
AU529974B2 (en) * 1978-05-04 1983-06-30 University Of Melbourne, The Electrode for human cochlea
WO1980002231A1 (fr) * 1979-04-24 1980-10-30 J Donachy Cable d'electrode flexible a longue duree
GB2057272B (en) * 1979-08-29 1983-10-19 Cardiac Recorders Ltd Defibrillator
DE3134896C2 (de) * 1981-09-03 1985-03-28 W.C. Heraeus Gmbh, 6450 Hanau Kabelzuleitung für Herzschrittmacher-Elektroden
US4414986A (en) * 1982-01-29 1983-11-15 Medtronic, Inc. Biomedical stimulation lead
EP0109304B1 (fr) * 1982-11-15 1987-06-03 Minnesota Mining And Manufacturing Company Elément d'ancrage et outil d'insertion pour l'ancrage des conducteurs d'électrode utilisés pour l'implantation cochléaire
EP0215726A3 (fr) * 1985-08-19 1989-04-19 The University Of Melbourne Groupe d'électrodes pour une prothèse
CA1292285C (fr) * 1985-08-21 1991-11-19 Paul H. Stypulkowski Electrode pouvant etre placees dans le canal auditif externe pres du tympan et methode de stimulation et d'enregistrement des signaux electriques emis
NL8602043A (nl) * 1986-08-08 1988-03-01 Forelec N V Werkwijze voor het verpakken van een implantaat, bijvoorbeeld een electronisch circuit, verpakking en implantaat.
FR2629710B1 (fr) * 1988-04-08 1997-10-24 Mxm Dispositifs porte-electrodes implantables dans la cochlee pour stimuler electriquement le nerf auditif

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8915926B2 (en) 2006-11-08 2014-12-23 Advanced Bionics Ag Pre-curved electrode array loading tools
US8939993B1 (en) 2006-11-08 2015-01-27 Advanced Bionics Ag Pre-curved electrode array loading tools
US9474546B1 (en) 2008-04-18 2016-10-25 Advanced Bionics Ag Pre-curved electrode array insertion tools
US8452421B2 (en) 2009-07-08 2013-05-28 Advanced Bionics, Llc Lead insertion tools
US8753352B2 (en) 2010-06-25 2014-06-17 Advanced Bionics Ag Tools, systems, and methods for inserting a pre-curved electrode array portion of a lead into a bodily orifice
US8753353B2 (en) 2010-06-25 2014-06-17 Advanced Bionics Ag Tools, systems, and methods for inserting an electrode array portion of a lead into a bodily orifice
US8774944B2 (en) 2010-06-25 2014-07-08 Advanced Bionics Ag Tools, systems, and methods for inserting an electrode array portion of a lead into a bodily orifice

Also Published As

Publication number Publication date
EP0328597A4 (en) 1992-07-08
AU605343B2 (en) 1991-01-10
JPH02500814A (ja) 1990-03-22
WO1989000870A1 (fr) 1989-02-09
AU2089388A (en) 1989-03-01

Similar Documents

Publication Publication Date Title
US4898183A (en) Apparatus and method for insertion of cochlear electrode assembly
EP0328597A1 (fr) Appareil et procede d'introduction d'une unite a electrode cochleaire
US8460315B2 (en) Insertion tool system for an electrode array
US10543125B2 (en) Cartridge for an electrode array insertion device
US4462402A (en) Method and anchor for anchoring
US6321125B1 (en) Cochlear electrode system including distally attached flexible positioner
US6070105A (en) Modiolus-hugging cochlear electrodes
US5033477A (en) Method and apparatus for providing intrapericardial access and inserting intrapericardial electrodes
US6078841A (en) Flexible positioner for use with implantable cochlear electrode array
EP0517494B1 (fr) Outil pour introduire et ouvrir un tunnel pour une électrode souscutanée à treillis en fil
US7050858B1 (en) Insertion tool for placement of electrode system inside the cochlear lumen
US8065020B2 (en) System for medical lead tunneling
US6163729A (en) Method of positioning an implantable cochlear electrode array within a cochlea
US6968238B1 (en) Method for inserting cochlear electrode and insertion tool for use therewith
US4462401A (en) Method and anchor for anchoring electrode leads used in cochlear implantation
US6149657A (en) Insertion tool for placement of a flexible silicone mold or positioner within a cochlea
US5139033A (en) Sutureless myocardial lead implantation device
EP2858714B1 (fr) Électrode ayant une butée d'insertion mobile
US4487210A (en) Anchor for anchoring electrode leads used in cochlear implantation
EP0109304B1 (fr) Elément d'ancrage et outil d'insertion pour l'ancrage des conducteurs d'électrode utilisés pour l'implantation cochléaire
US20030125785A1 (en) Disconnection system for two-part cochlear electrode and method of making same
WO1993024058A1 (fr) Instrument permettant d'introduire une electrode
US8126572B2 (en) Cochlear implant electrode with adjustable subdivision for middle ear functions
CN109923876B (zh) 微创耳蜗植入手术中的激励电极引线
CN105169553B (zh) 电极导线保护装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19890809

A4 Supplementary search report drawn up and despatched

Effective date: 19920518

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): DE FR GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19920908