WO2001082848A3 - Minimally-invasive access into the cochlea for electrode insertion and fluid delivery - Google Patents

Minimally-invasive access into the cochlea for electrode insertion and fluid delivery Download PDF

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Publication number
WO2001082848A3
WO2001082848A3 PCT/US2001/013687 US0113687W WO0182848A3 WO 2001082848 A3 WO2001082848 A3 WO 2001082848A3 US 0113687 W US0113687 W US 0113687W WO 0182848 A3 WO0182848 A3 WO 0182848A3
Authority
WO
WIPO (PCT)
Prior art keywords
cochlea
grommet
electrode array
access hole
access
Prior art date
Application number
PCT/US2001/013687
Other languages
French (fr)
Other versions
WO2001082848A2 (en
Inventor
Janusz A Kuzma
Thomas J Balkany
Thomas H R Lenarz
Original Assignee
Advanced Bionics Corp
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 Advanced Bionics Corp filed Critical Advanced Bionics Corp
Priority to AU2001257369A priority Critical patent/AU2001257369A1/en
Publication of WO2001082848A2 publication Critical patent/WO2001082848A2/en
Publication of WO2001082848A3 publication Critical patent/WO2001082848A3/en

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
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1679—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the ear
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1604—Chisels; Rongeurs; Punches; Stamps

Abstract

A threaded grommet (50), having an axial passageway (56) therethrough, and made from a biocompatible material, such as titanium, is screwed into a cochleostomy (40) made in the bony tissue (34) adjacent the round window (32) in order to provide a minimally-invasive access port into the cochlea (30). Threads (52) included on the outside of the grommet (50) engage the bony tissue (34) and form a tight seal that holds the grommet securely in position. Such tight seal prevents cochlear fluids from escaping from inside of the cochlea. The axial passageway (56) through the center of the grommet provides an opening, i.e., mechanical access, into the base end (the end of the cochlea nearest the round window) of the cochlea. Drugs, steroids, tissue-growth-inhibiting fluids, and the like, may be controllably delivered through the access hole into the cochlea, which access hole may be plugged when not needed. Additionally, an electrode array (10), e.g., a relatively short electrode array may be inserted into the cochlea through the access hole. A preferred electrode array (10) has from four to eight electrode contacts (14) spaced apart along a flexible carrier (12). The flexible carrier is about 6-8 mm in length. The electrode contacts may be connected, in conventional manner, to suitable implantable cochlear stimulator (ICS), or equivalent pulse generator. Neither the grommet nor the short electrode array interfere with the normal hearing processes within the cochlea. Hence, both electrical stimulation and normal hearing processes may occur simultaneously within the cochlea.
PCT/US2001/013687 2000-04-28 2001-04-27 Minimally-invasive access into the cochlea for electrode insertion and fluid delivery WO2001082848A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001257369A AU2001257369A1 (en) 2000-04-28 2001-04-27 Minimally-invasive access into the cochlea for electrode insertion and fluid delivery

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20107600P 2000-04-28 2000-04-28
US60/201,076 2000-04-28

Publications (2)

Publication Number Publication Date
WO2001082848A2 WO2001082848A2 (en) 2001-11-08
WO2001082848A3 true WO2001082848A3 (en) 2002-03-21

Family

ID=22744392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/013687 WO2001082848A2 (en) 2000-04-28 2001-04-27 Minimally-invasive access into the cochlea for electrode insertion and fluid delivery

Country Status (2)

Country Link
AU (1) AU2001257369A1 (en)
WO (1) WO2001082848A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10305349A1 (en) * 2003-02-10 2004-08-26 Cell Center Cologne Gmbh Inner ear plug
AU2003900773A0 (en) * 2003-02-21 2003-03-13 Cochlear Limited Telescopic array for a cochlear implant
AU2009305745B9 (en) * 2008-10-15 2013-07-18 Med-El Elektromedizinische Geraete Gmbh Inner ear drug delivery device and method
US8712554B2 (en) * 2009-07-21 2014-04-29 Advanced Bionics Integrated wire carrier for electrode array

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4645504A (en) * 1985-05-24 1987-02-24 The Regents Of The University Of California Implantable infection barrier seal and method
FR2622790A1 (en) * 1987-11-09 1989-05-12 Matco Prosthetic ligaments with bone screw system
US4832051A (en) * 1985-04-29 1989-05-23 Symbion, Inc. Multiple-electrode intracochlear device
US4892108A (en) * 1987-07-23 1990-01-09 The Regents Of The University Of Michigan Multi-channel extracochlear implant
WO1996031087A1 (en) * 1995-03-30 1996-10-03 Cochlear Limited Cochlear electrode implant assemblies with positioning system therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832051A (en) * 1985-04-29 1989-05-23 Symbion, Inc. Multiple-electrode intracochlear device
US4645504A (en) * 1985-05-24 1987-02-24 The Regents Of The University Of California Implantable infection barrier seal and method
US4892108A (en) * 1987-07-23 1990-01-09 The Regents Of The University Of Michigan Multi-channel extracochlear implant
FR2622790A1 (en) * 1987-11-09 1989-05-12 Matco Prosthetic ligaments with bone screw system
WO1996031087A1 (en) * 1995-03-30 1996-10-03 Cochlear Limited Cochlear electrode implant assemblies with positioning system therefor

Also Published As

Publication number Publication date
AU2001257369A1 (en) 2001-11-12
WO2001082848A2 (en) 2001-11-08

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