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WO1993024058A1 - Instrument permettant d'introduire une electrode - Google Patents

Instrument permettant d'introduire une electrode Download PDF

Info

Publication number
WO1993024058A1
WO1993024058A1 PCT/AU1993/000242 AU9300242W WO9324058A1 WO 1993024058 A1 WO1993024058 A1 WO 1993024058A1 AU 9300242 W AU9300242 W AU 9300242W WO 9324058 A1 WO9324058 A1 WO 9324058A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
item
suction
tip
electrode
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.)
Ceased
Application number
PCT/AU1993/000242
Other languages
English (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 WO1993024058A1 publication Critical patent/WO1993024058A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/30—Surgical pincettes, i.e. surgical tweezers without pivotal connections
    • 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

  • the present invention relates to an insertion tool for a body implantable lead or similar device such as an electrode array for a cochlear implant.
  • a typical intra-cochlear electrode assembly for example, includes an electrode array for insertion into the cochlea of a patient, the array being formed largely from silicone material with electrodes on the surface.
  • the diameter of the array is less than 1 mm, it will be appreciated that the insertion of these small flexible electrode arrays into specific regions of the human body such as the scala tympani is a delicate task for a surgeon.
  • Some tools developed are used to direct and force the electrode into the cochlear canal. This method of insertion is not entirely effective and can cause damage to the electrode structure. In addition, there is a tendency for surgeons to also use miniature crocodile forceps or tweezers to aid with the insertion. This method also tends to cause damage to the electrode structure.
  • insertion tool for cochlear electrodes has been developed to insert curved electrodes.
  • the curved electrode is initially straightened as it is loaded into an introducer tube. This tube is then positioned to allow the electrode to be pushed into the cochlear canal by a mechanical ejection method.
  • This insertion technique does not give a desirable level of control over the insertion to allow the surgeon to feel for obstructions which can damage the electrode.
  • the present invention provides an insertion tool for an item to be surgically implanted, said tool having a body comprising means to releasably engage by suction at least part of the item.
  • the present invention provides a tip for an insertion tool for an item to be surgically implanted, said tip comprising means to releasably engage by suction at least part of the item.
  • the present invention provides an insertion tool for a body implantable device, said tool having a tip comprising means to releasably engage by suction at least part of the device.
  • the means to releasably engage is shaped so as to at least partly receive the item to be implanted.
  • the insertion tool and tip of the invention are suitably adapted for releasably engaging an electrode array for a cochlear electrode assembly.
  • the present invention provides, in combination an intra- cochlear electrode assembly comprising at least one electrode array for insertion into the cochlea, and an insertion tool for inserting one end of a said array into the cochlea, said tool having a body comprising means to releasably engage by suction at least part of the array.
  • the present invention provides, in combination, an intra- cochlear electrode assembly comprising at least one electrode array for insertion into the cochlea, and a tip for an insertion tool for inserting an end of the array into the cochlear, said tip comprising means to releasably engage by suction at least part of the array.
  • the present invention provides a method of implanting an item in the body of a patient, comprising, providing an insertion tool having engaging means to releasably engage by suction at least part of the item, providing a source of suction for the insertion tool, engaging said engaging means with said at least part of the item by suction, implanting the item into the body, removing the suction from the insertion tool, thereby releasing the item from the tool, and withdrawing the tool from the body.
  • the tool of the present invention has the advantage that it is very gentle with the body implantable device such as an electrode array, and its use gives the surgeon both the necessary full control over the force used to direct for example an electrode into the cochlea, and full control in handling during initial manipulation of the electrode.
  • the tool of the present invention is suitably powered from a central vacuum installation or vacuum pump commonly used in operating theatres.
  • the tip and tool of the present invention are conveniently made from a bio- compatible material such as a hard plastic material, or from an autoclavable material such as stainless steel, or from any other suitable material.
  • the engaging surface of the tip is suitably sized and shaped so as to be compatible with the surface of the body implantable device such as an electrode array.
  • the tip includes a groove for engaging at least part of the device.
  • the inventive tip of the present invention conveniently includes an aperture connectable to a source of suction.
  • the tip is connectable by any means to the insertion tool, and may suitably be integral therewith in a single piece moulded construction.
  • Figure 1 is a perspective view of a tip for an insertion tool in accordance with one aspect of the present invention
  • Figure 2 is an end section of the tip of Figure 1 ;
  • Figure 3 is a top elevation of a tool according to the present invention including the tip of Figures 1 and 2;
  • Figure 4 is a sectional side elevation of the tool of Figure 3;
  • Figure 5 is a close-up of the tip of the present invention engaging an electrode array;
  • Figure 6 illustrates the preferred method of using the insertion tool with the electrode array.
  • Figure 1 shows generally a tip 10 for an insertion tool for implanting an lead type device, such as an intra-cochlear electrode array assembly, into a body cavity.
  • Tip 10 includes a generally cylindrical body 11 having a groove formed along at least a part of its length, defined by ridges 13 and 14, to receive and releasably engage at least part of an electrode array.
  • the groove 12 is configured to complement the size and shape of the electrode array, and in the preferred embodiment is substantially U- or C- shaped as shown. Groove 12 terminates at point 16 in the form of a barb.
  • the tip 10 also includes an aperture 15 of substantially cylindrical configuration which is suitably attached to a handle portion and in turn to a source of suction such as a central vacuum installation or operating theatre vacuum pump (not shown). Any suitable conventional suction source may be used.
  • a source of suction such as a central vacuum installation or operating theatre vacuum pump (not shown). Any suitable conventional suction source may be used.
  • Tip 10 includes a cavity 17 intermediate the groove 12 and aperture 15 ensuring groove 12 and aperture 15 are in fluid communication so that suction may be applied in the region of the groove 12 as required.
  • FIGS 3 and 4 illustrate a preferred insertion tool 20 including the tip 10 of Figures 1 and 2.
  • Insertion tool 20 has a longitudinal axis 21 and comprises tip 10 at one end thereof.
  • the tool includes an intermediate tubular member 22 of circular cross section defining a bore 25 therein.
  • the intermediate tubular member 22 tapers at 23 to a tubular member 24 of larger diameter than the intermediate tubular member 22.
  • Member 24 is also conveniently of circular cross section defining a bore 26 therein.
  • Member 24 defines a handle portion for gripping by a surgeon.
  • the tip 10 may be integral with the tool 20 and can thus be formed as a one piece moulded construction, preferably of bio-compatible material.
  • tip 10 is formed from a plastic material and is intended to be disposable - tool 20 may be reused if desired.
  • the tip 10 and tool 20 may be formed from material can be sterilised and reused, such as stainless steel.
  • the longitudinal axis 27 of tip 10 is not co- axial with the longitudinal axis 21 of the insertion tool 20.
  • This construction is intended to provide sufficient angular displacement of the electrode array from the body of the insertion tool to allow it to be conveniently utilised by the surgeon.
  • the axial displacement of the tip 10 with respect to the insertion tool 20 may be typically of the order of 0 to 20 degrees, preferably 5 to 15 degrees and more preferably approximately 10 degrees.
  • FIGS 5 and 6 show tip 10 engaging an electrode array 30.
  • Electrode array 30 may form part of a cochlear electrode assembly 31.
  • a source of suction 40 is attached to one end of the insertion tool 20 enabling the tip 10 to releasably engage by suction at least a part of the electrode array 30.
  • the surgeon takes the insertion tool 20 in one hand, and an electrode assembly such as a intra-cochlear electrode assembly 31 having an array 30 in the other hand.
  • the surgeon simply lines up the electrode array 30 with the tip 10 and applies suction to the tool 20 and hence the tip 10.
  • the array 30 is readily drawn into and engages the groove 12 of tip 10.
  • the surgeon subsequently inserts the array into the body of the patient such as the cochlear canal.
  • the need for a secondary gripping tool such as a pair of forceps or tweezers is obviated since the application of suction permits full control of the electrode array 30 to be accomplished.
  • the suction to the insertion tool 20 is switched off thereby releasing the electrode array 30 from tip 10. Removal of the insertion tool 20 from the body cavity is then facilitated.
  • the suction may be controlled by any existing arrangement which is found convenient, or if desired a valve arrangement of some type may be provided within tool 20.

Landscapes

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

Abstract

Instrument (20) utilisé pour manipuler de petits objets destinés à l'implantation chirurgicale, tels que des réseaux (30) d'électrodes destinés à des implants intra-cochléaires (31). Ledit instrument saisit l'objet en l'aspirant et le retient par une source (40) de succion et dès lors que l'objet est en place la succion s'arrête, l'objet étant alors libéré.
PCT/AU1993/000242 1992-05-29 1993-05-26 Instrument permettant d'introduire une electrode Ceased WO1993024058A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPL2691 1992-05-29
AUPL269192 1992-05-29

Publications (1)

Publication Number Publication Date
WO1993024058A1 true WO1993024058A1 (fr) 1993-12-09

Family

ID=3776195

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1993/000242 Ceased WO1993024058A1 (fr) 1992-05-29 1993-05-26 Instrument permettant d'introduire une electrode

Country Status (1)

Country Link
WO (1) WO1993024058A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029366A1 (fr) * 1997-12-08 1999-06-17 Axon Engineering, Inc. Instrument d'implantation d'electrode a manchon spirale pour nerfs
WO2002074211A1 (fr) * 2001-03-19 2002-09-26 Cochlear Limited Systeme d'outil d'insertion pour reseau d'electrodes
GB2406277A (en) * 2003-09-24 2005-03-30 Biomet Merck Ltd A device for gripping a prosthesis or part of a prosthesis
US7792586B2 (en) 2002-02-22 2010-09-07 Cochlear Limited Insertion device for an electrode array
US8452421B2 (en) 2009-07-08 2013-05-28 Advanced Bionics, Llc Lead insertion tools
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
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
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
US8855790B2 (en) 2010-05-07 2014-10-07 Advanced Bionics Ag Systems and methods for loading a pre-curved electrode array onto a straightening member
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
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
US9474546B1 (en) 2008-04-18 2016-10-25 Advanced Bionics Ag Pre-curved electrode array insertion tools
CN109954210A (zh) * 2019-03-18 2019-07-02 上海力声特医学科技有限公司 人工耳蜗弯电极植入器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2379629A (en) * 1943-10-13 1945-07-03 Eric W Eweson Device for manipulating contact lenses
US3074407A (en) * 1956-09-17 1963-01-22 Marguerite Barr Moon Eye Res F Surgical devices for keratoplasty and methods thereof
US3859992A (en) * 1973-06-06 1975-01-14 Harlan C Amstutz Vacuum-operated acetabular cup holder and positioner
GB1388858A (en) * 1971-04-29 1975-03-26 Pearce G H Introduction of medicinal capsules into body passages
US4047532A (en) * 1975-04-21 1977-09-13 Phillips Jack L Vacuum forcep and method of using same
US4123098A (en) * 1977-07-25 1978-10-31 Shoup Leo E Contact lens insertion and retraction device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2379629A (en) * 1943-10-13 1945-07-03 Eric W Eweson Device for manipulating contact lenses
US3074407A (en) * 1956-09-17 1963-01-22 Marguerite Barr Moon Eye Res F Surgical devices for keratoplasty and methods thereof
GB1388858A (en) * 1971-04-29 1975-03-26 Pearce G H Introduction of medicinal capsules into body passages
US3859992A (en) * 1973-06-06 1975-01-14 Harlan C Amstutz Vacuum-operated acetabular cup holder and positioner
US4047532A (en) * 1975-04-21 1977-09-13 Phillips Jack L Vacuum forcep and method of using same
US4123098A (en) * 1977-07-25 1978-10-31 Shoup Leo E Contact lens insertion and retraction device

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6093197A (en) * 1997-12-08 2000-07-25 Axon Engineering, Inc. Spiral nerve cuff electrode implantation tool
WO1999029366A1 (fr) * 1997-12-08 1999-06-17 Axon Engineering, Inc. Instrument d'implantation d'electrode a manchon spirale pour nerfs
WO2002074211A1 (fr) * 2001-03-19 2002-09-26 Cochlear Limited Systeme d'outil d'insertion pour reseau d'electrodes
US7063708B2 (en) 2001-03-19 2006-06-20 Cochlear Limited Insertion tool system for an electrode array
US8460315B2 (en) 2001-03-19 2013-06-11 Cochlear Limited Insertion tool system for an electrode array
US8909349B2 (en) 2002-02-22 2014-12-09 Cochlear Limited Cartridge for an electrode array insertion device
US7792586B2 (en) 2002-02-22 2010-09-07 Cochlear Limited Insertion device for an electrode array
US10543125B2 (en) 2002-02-22 2020-01-28 Cochlear Limited Cartridge for an electrode array insertion device
GB2406277A (en) * 2003-09-24 2005-03-30 Biomet Merck Ltd A device for gripping a prosthesis or part of a prosthesis
GB2406277B (en) * 2003-09-24 2007-12-19 Biomet Merck Ltd Device for gripping a prosthesis or a part of a prosthesis
US8939993B1 (en) 2006-11-08 2015-01-27 Advanced Bionics Ag Pre-curved electrode array loading tools
US8915926B2 (en) 2006-11-08 2014-12-23 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
US8855790B2 (en) 2010-05-07 2014-10-07 Advanced Bionics Ag Systems and methods for loading a pre-curved electrode array onto a straightening member
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
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
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
CN109954210A (zh) * 2019-03-18 2019-07-02 上海力声特医学科技有限公司 人工耳蜗弯电极植入器

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