WO1982001655A1 - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
WO1982001655A1
WO1982001655A1 PCT/AU1981/000163 AU8100163W WO8201655A1 WO 1982001655 A1 WO1982001655 A1 WO 1982001655A1 AU 8100163 W AU8100163 W AU 8100163W WO 8201655 A1 WO8201655 A1 WO 8201655A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
array
unit
contact
electrical
Prior art date
Application number
PCT/AU1981/000163
Other languages
French (fr)
Inventor
Australia Commw
Original Assignee
Daly Christopher N
Money David K
Patrick James F
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
Priority to AU74561/81A priority Critical patent/AU7456181A/en
Application filed by Daly Christopher N, Money David K, Patrick James F filed Critical Daly Christopher N
Publication of WO1982001655A1 publication Critical patent/WO1982001655A1/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H05K7/10—Plug-in assemblages of components, e.g. IC sockets
    • H05K7/1053—Plug-in assemblages of components, e.g. IC sockets having interior leads
    • H05K7/1076—Plug-in assemblages of components, e.g. IC sockets having interior leads co-operating by sliding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/07—Endoradiosondes
    • A61B5/076—Permanent implantations
    • 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
    • A61F11/04—Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense, e.g. through the touch sense
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/86—Parallel contacts arranged about a common axis
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0001—Means for transferring electromagnetic energy to implants
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/67—Implantable hearing aids or parts thereof not covered by H04R25/606

Definitions

  • This invention relates to improvements in connectors and articles having connectors thereon and is specifically designed for electronic connectors and articles including such connectors which are used in hostile environments; such as exist within the human body.
  • the connectors are specifically designed for use in multiple electrode applications such as for hearing prostheses, visual prostheses and other in vivo electronic systems, such as control of muscle functions.
  • the invention is not, however, to be considered restricted to such functions.
  • the object of the invention is to provide a connector which can be used in multiple electrode applications and which is physically small, but which permits the formation of effective and durable electrical connections whilst being capable of being sealed.
  • Australian patent specification 40981/78 was concerned with this problem. It sought to achieve electrical contact between a plurality of individual contacts without emphasizing the need for absolute electrical insulation between the individual contacts of the array. However to ensure that electrical contact was maintained for all contacts, it needed to be maintained under pressure. Patent applications 40981/78 sought to achieve this by providing an elastomeric connector.
  • This elastomeric connector in its preferred form, is a layered connector and in this the conductive and nonconductive zones are formed and located side by side with the conductive zones extending fully through the connector so that the connector can be cut to any required size, provided the cut is transverse to the zones whilst still having effective conducting zones. If the connector is used in an implanted prosthesis, the individual conductors of the outgoing electrode group are located in the patient's body, and where these are being used to stimulate, say, the inner ear, they are located to terminate adjacent the particular areas to be stimulated.
  • the prosthesis unit ceases to operate, it will be understood that it is only necessary to open the patient's skin near the point of location of this unit, undo the screws holding the upper metal plate in position and replace the prosthesis unit with a new unit using the same upper connector assembly. In this way, there is no need to disturb the location of the conductors.
  • a connector should fulfill the following criteria:
  • the present invention provides a connector comprising a first array of discrete electrical contacts mounted on the external surface of a first unit, a second array of discrete electrical contacts mounted on the internal surface of a second unit, wherein said first unit is shaped to resiliently fit within said second unit so that electrical contact occurs between each contact of the first array and each contact of the second array.
  • each electrical contact of one of said arrays is resiliently mounted on its unit not only to ensure permanent electrical contact but also to retain the first unit within the second unit.
  • the two units are preferably cylindrical and composed of ceramic material. This construction means that the connection can be separated by simply pulling the two units apart.
  • the electronics module in a material transparent to the frequencies used to provide power and signals for the prosthesis.
  • the connector is intended for use in implantable prostheses in which one unit is connected via electrical leads to the nerve endings of the patient while the second unit incorporates an electronicsmodule for receiving and generating signals.
  • the prosthesis is for use and the electronics module for receiving and transmitting auditory signals is incorporated within the connector body and can be easily surgically removed.
  • the connector system is shown in an exploded view in Fig. 1. It consists of an electronics module package 4 and a connector body 9.
  • the design of the packaging for the electronics module is integral with the connector design: the package 4 is circular with each pinout being in the form of a band 5 of retallization running down the side of the package 4: a small spring 6 is welded to each band 5.
  • One spring is made larger than the others, to act as a key for the otherwise unkeyed system. It is of course possible to arrange the spring electrical contacts on the connector or body 9 as an alternative.
  • the package 4 shown is made of ceramic material to allow the use of a high frequency link to a coil unit inside the package, other inert materials could be used.
  • the connector body consists of a cylindrical section 9 closed at one end 10, with a groove 11 of triangular cross section machined into the inside face.
  • a precision '0' ring 13 is held in compression between this groove 11 and a corresponding groove 15 in a circular plate 14 pressed inside it: this seal satisfies the above leakage current requirements.
  • a silicone rubber boot not shown is placed over the top of the connector to prevent the ingrowth of tissue into the
  • the plate 14 incorporates a keyed recess 19 to enable easy opening of the connector for removal of the module 4.
  • Connector plates 16 pass through silicone rubber lined holes 17 in the base 18 of the connector and lie in vertical grooves in the connector body 9.
  • the leads from the electrode array implanted in the body are terminated by being welded to the butt of the plates 16 which are exposed on the bottom surface 18 of the connector body 9: subsequently this area is sealed with a coat of adhesive silicone rubber.
  • the connector of our invention is extremely suitable for use where multiple electrode connections are required and it is also of value as it enables the prosthesis or transducer assembly to be removed without the necessity of permanently displacing the electrodes or other connections.
  • the size of the connector of the present invention is very much smaller than has previously been obtainable.

Landscapes

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

Abstract

A connector for hearing prothesis comprising two portions (4), (9) which interfit resiliently. The outer surface of the first portion (4) carries electrical contacts (5) each of which includes a spring (6). This first portion fits into a second portion (9) which carries on its internal surface electrical contacts (16) which contact the electrical contacts (5).

Description

ELECTRICAL CONNECTOR
This invention relates to improvements in connectors and articles having connectors thereon and is specifically designed for electronic connectors and articles including such connectors which are used in hostile environments; such as exist within the human body.
The connectors are specifically designed for use in multiple electrode applications such as for hearing prostheses, visual prostheses and other in vivo electronic systems, such as control of muscle functions. The invention is not, however, to be considered restricted to such functions.
The object of the invention is to provide a connector which can be used in multiple electrode applications and which is physically small, but which permits the formation of effective and durable electrical connections whilst being capable of being sealed. Australian patent specification 40981/78 was concerned with this problem. It sought to achieve electrical contact between a plurality of individual contacts without emphasizing the need for absolute electrical insulation between the individual contacts of the array. However to ensure that electrical contact was maintained for all contacts, it needed to be maintained under pressure. Patent applications 40981/78 sought to achieve this by providing an elastomeric connector.
This elastomeric connector in its preferred form, is a layered connector and in this the conductive and nonconductive zones are formed and located side by side with the conductive zones extending fully through the connector so that the connector can be cut to any required size, provided the cut is transverse to the zones whilst still having effective conducting zones. If the connector is used in an implanted prosthesis, the individual conductors of the outgoing electrode group are located in the patient's body, and where these are being used to stimulate, say, the inner ear, they are located to terminate adjacent the particular areas to be stimulated.
After some time, there may well be a fibrous growth around these conductor members and it would be difficult to remove these and, certainly, it would be difficult to remove them and replace them with another group of electrodes. If the prosthesis unit ceases to operate, it will be understood that it is only necessary to open the patient's skin near the point of location of this unit, undo the screws holding the upper metal plate in position and replace the prosthesis unit with a new unit using the same upper connector assembly. In this way, there is no need to disturb the location of the conductors.
The drawbacks of this development are primarily the size of the unit which is not inherently constructed to facilitate miniturization; screws or other fastening means are needed to hold the unit together and to maintain electrical contact and do not facilitate surgical simplicity, as well as being prone to loosen in some cases.
While it is possible to design electronic modules with very high reliability for chronic implantation in vivo, some failures must still be expected. In the situation where such a module is providing multipoint stimulation through an array of electrodes, which once implanted in the stimulus site cannot necessarily be replaced, it is desirable that the module be connected to the electrode array in such a way as to allow disconnection of the faulty module and reconnection to an operational module. This approach also allows modules to be replaced, should circuit improvements make this desirable.
Generally a connector should fulfill the following criteria:
1. It should connect typically 10-20 electrodes to the electronics module.
2. It should be as small as possible.
3. While it is desirable that all connections be isolated by a high impedance, some current shunting is acceptable inside the connector, provided that it does not result in a significant change of stimulus current. To this end the present invention provides a connector comprising a first array of discrete electrical contacts mounted on the external surface of a first unit, a second array of discrete electrical contacts mounted on the internal surface of a second unit, wherein said first unit is shaped to resiliently fit within said second unit so that electrical contact occurs between each contact of the first array and each contact of the second array. Preferably each electrical contact of one of said arrays is resiliently mounted on its unit not only to ensure permanent electrical contact but also to retain the first unit within the second unit.
The two units are preferably cylindrical and composed of ceramic material. This construction means that the connection can be separated by simply pulling the two units apart.
In another aspect it is an object of this invention to avoid prior art problems of corrosion of electrodes and connector materials when implanted within a patient's body.
In the prior art implantable devices metal connector bodies were used for housing the electronics module. This necessitated placing the coils used to receive power and signals had outside of the electronics module. The electric leads connecting these coils to the electronics module passed through the wall of the module but any penetration or presence of body fluids about the module or connector body could easily result in an undesired electrical activity between the coil leads and the electrode connection to the nerve endings. Such current leakage would also result in undesirable corrosion occurring.
To overcome this problem it is proposed to manufacture the electronics module in a material transparent to the frequencies used to provide power and signals for the prosthesis.
Once such a transparent material is used it is of course possible to place the coils within the electronics module. This construction means that no electric leads from the coil to the electronics module are exposed at all. This ensures that there is little chance of corrosion occurring and enhances the life and useability of the connector.
A preferred form of connector will now be described. The connector is intended for use in implantable prostheses in which one unit is connected via electrical leads to the nerve endings of the patient while the second unit incorporates an electronicsmodule for receiving and generating signals. In this case the prosthesis is for use and the electronics module for receiving and transmitting auditory signals is incorporated within the connector body and can be easily surgically removed.
The connector system is shown in an exploded view in Fig. 1. It consists of an electronics module package 4 and a connector body 9. The design of the packaging for the electronics module is integral with the connector design: the package 4 is circular with each pinout being in the form of a band 5 of retallization running down the side of the package 4: a small spring 6 is welded to each band 5. One spring is made larger than the others, to act as a key for the otherwise unkeyed system. It is of course possible to arrange the spring electrical contacts on the connector or body 9 as an alternative. While the package 4 shown is made of ceramic material to allow the use of a high frequency link to a coil unit inside the package, other inert materials could be used. The connector body consists of a cylindrical section 9 closed at one end 10, with a groove 11 of triangular cross section machined into the inside face.
A precision '0' ring 13 is held in compression between this groove 11 and a corresponding groove 15 in a circular plate 14 pressed inside it: this seal satisfies the above leakage current requirements. A silicone rubber boot not shown is placed over the top of the connector to prevent the ingrowth of tissue into the
'0' ring groove: this would complicate replacement. The plate 14 incorporates a keyed recess 19 to enable easy opening of the connector for removal of the module 4.
Connector plates 16 pass through silicone rubber lined holes 17 in the base 18 of the connector and lie in vertical grooves in the connector body 9.
The leads from the electrode array implanted in the body are terminated by being welded to the butt of the plates 16 which are exposed on the bottom surface 18 of the connector body 9: subsequently this area is sealed with a coat of adhesive silicone rubber. We have found that the connector of our invention is extremely suitable for use where multiple electrode connections are required and it is also of value as it enables the prosthesis or transducer assembly to be removed without the necessity of permanently displacing the electrodes or other connections. At the same time, the size of the connector of the present invention is very much smaller than has previously been obtainable.

Claims

1. A connector comprising a first array of discrete electrical contacts mounted on the external surface of a first unit, a second array of discrete electrical contacts mounted on the internal surface of a second unit, wherein said first unit is shaped to resiliently fit within said second unit so that electrical contact occurs between each contact of the first array and each contact of the second array.
2. A connector as claimed in claim 1 in which each electrical contact of one of said arrays is resiliently mounted on its unit not only to ensure permanent electrical contact but also to retain the first unit within the second unit.
3. An electrical connector for use in hostile environments comprising a first connector portion adapted to fit within a second connector portion, wherein said first connector portion carries on its external surface a first array of discrete electrical contacts and said second connector portion carries on its internal surface a second array of discrete electrical contacts, and said first connector portion with said first array is resiliently held within said second connector portion to ensure electrical contact between each contact of said first array and the complementary contact of said second array.
4. An electrical connector as claimed in claim
3 wherein the connector is cylindrical and the first and second portions are held together by the resilient interfit provided by the electrical contacts.
PCT/AU1981/000163 1980-11-13 1981-11-13 Electrical connector WO1982001655A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74561/81A AU7456181A (en) 1981-11-13 1981-08-14 Apparatus for regenerating activated carbon

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPE648480 1980-11-13
AU6484/80801113 1980-11-13

Publications (1)

Publication Number Publication Date
WO1982001655A1 true WO1982001655A1 (en) 1982-05-27

Family

ID=3768823

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1981/000163 WO1982001655A1 (en) 1980-11-13 1981-11-13 Electrical connector

Country Status (4)

Country Link
EP (1) EP0064992A1 (en)
CA (1) CA1187559A (en)
IT (1) IT1139699B (en)
WO (1) WO1982001655A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011174A1 (en) * 1997-09-03 1999-03-11 Medtronic, Inc. Optical window for implantable medical devices
US5951601A (en) * 1996-03-25 1999-09-14 Lesinski; S. George Attaching an implantable hearing aid microactuator
EP1296533A3 (en) * 2001-08-27 2003-07-02 Yamaha Metanix Corporation Microphone holder having connector unit molded together with conductive strips
EP1401053A1 (en) * 2002-09-19 2004-03-24 Yamaha Metanix Corporation Microphone holder having connector unit molded together with conductive strips
US8147544B2 (en) 2001-10-30 2012-04-03 Otokinetics Inc. Therapeutic appliance for cochlea
WO2016018715A1 (en) * 2014-07-31 2016-02-04 Motorola Solutions, Inc. Interface system for communication devices

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2314629A (en) * 1929-10-22 1930-10-21 Leonard Cook Frederick Improved electric lamp holder
US3665509A (en) * 1971-03-22 1972-05-23 Us Navy Underwater electrical connector
AU4638972A (en) * 1971-09-06 1974-03-28 Amp Incorporated Electrical connector
GB1366089A (en) * 1970-10-23 1974-09-11 Socapex Electrical connector
AU6208073A (en) * 1972-11-21 1975-05-01 Bunker Ramo Corporation Electrical connectors with plural simultaneously-actuated insulation-piercing contacts
GB1434058A (en) * 1972-04-20 1976-04-28 Bunker Ramo Connector for printed circuit boards
US4010760A (en) * 1975-05-23 1977-03-08 Medtronic, Inc. Coupling assembly for implantable electromedical devices
AU1045176A (en) * 1975-03-03 1977-07-28 Motorola, Inc. Subminiature connector arrangement
US4119103A (en) * 1976-10-27 1978-10-10 Medtronic, Inc. Detachable power source with low current leakage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2314629A (en) * 1929-10-22 1930-10-21 Leonard Cook Frederick Improved electric lamp holder
GB1366089A (en) * 1970-10-23 1974-09-11 Socapex Electrical connector
US3665509A (en) * 1971-03-22 1972-05-23 Us Navy Underwater electrical connector
AU4638972A (en) * 1971-09-06 1974-03-28 Amp Incorporated Electrical connector
GB1434058A (en) * 1972-04-20 1976-04-28 Bunker Ramo Connector for printed circuit boards
AU6208073A (en) * 1972-11-21 1975-05-01 Bunker Ramo Corporation Electrical connectors with plural simultaneously-actuated insulation-piercing contacts
AU1045176A (en) * 1975-03-03 1977-07-28 Motorola, Inc. Subminiature connector arrangement
US4010760A (en) * 1975-05-23 1977-03-08 Medtronic, Inc. Coupling assembly for implantable electromedical devices
US4119103A (en) * 1976-10-27 1978-10-10 Medtronic, Inc. Detachable power source with low current leakage

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5951601A (en) * 1996-03-25 1999-09-14 Lesinski; S. George Attaching an implantable hearing aid microactuator
WO1999011174A1 (en) * 1997-09-03 1999-03-11 Medtronic, Inc. Optical window for implantable medical devices
EP1296533A3 (en) * 2001-08-27 2003-07-02 Yamaha Metanix Corporation Microphone holder having connector unit molded together with conductive strips
US6856689B2 (en) 2001-08-27 2005-02-15 Yamaha Metanix Corp. Microphone holder having connector unit molded together with conductive strips
US8147544B2 (en) 2001-10-30 2012-04-03 Otokinetics Inc. Therapeutic appliance for cochlea
US8876689B2 (en) 2001-10-30 2014-11-04 Otokinetics Inc. Hearing aid microactuator
EP1401053A1 (en) * 2002-09-19 2004-03-24 Yamaha Metanix Corporation Microphone holder having connector unit molded together with conductive strips
WO2016018715A1 (en) * 2014-07-31 2016-02-04 Motorola Solutions, Inc. Interface system for communication devices
US9407313B2 (en) 2014-07-31 2016-08-02 Motorola Solutions, Inc. Radio housing having through-hole connector for coupling accessories

Also Published As

Publication number Publication date
IT1139699B (en) 1986-09-24
IT8125025A0 (en) 1981-11-12
EP0064992A1 (en) 1982-11-24
CA1187559A (en) 1985-05-21

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