US Patent No: 7,765,005

Number of patents in Portfolio can not be more than 2000

Apparatus and process for reducing the susceptability of active implantable medical devices to medical procedures such as magnetic resonance imaging

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ALSO PUBLISHED AS: 20050197677
ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

A feedthrough terminal assembly for an active implantable medical device (AIMD) includes a plurality of leadwires extending from electronic circuitry of the AIMD, and a lossy ferrite inductor through which the leadwires extend in non-conductive relation for increasing the impedance of the leadwires at selected RF frequencies and reducing magnetic flux core saturation of the lossy ferrite inductor through phase cancellation of signals carried by the leadwires. A process is also provided for filtering electromagnetic interference (EMI) in an implanted leadwire extending from an AIMD into body fluids or tissue, wherein the leadwire is subjected to occasional high-power electromagnetic fields such as those produced by medical diagnostic equipment including magnetic resonance imaging.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GREATBATCH LTD.CLARENCE, NY548
GREATBATCH-SIERRA, INC.CLARENCE, NY1

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Stevenson, Robert A Canyon Country, CA 192 2736

Cited Art

Patent Info (Count) # Cites Year
 
BIOPHAN TECHNOLOGIES, INC. (9)
6,506,972 Magnetically shielded conductor 76 2002
6,760,628 Electromagnetic interference immune tissue invasive system 41 2002
6,778,856 Electromagnetic interference immune tissue invasive system 32 2002
6,819,958 Electromagnetic interference immune tissue invasive system 32 2002
6,673,999 Magnetically shielded assembly 71 2002
6,713,671 Magnetically shielded assembly 68 2002
6,768,053 Optical fiber assembly 10 2003
6,765,144 Magnetic resonance imaging coated assembly 86 2003
6,815,609 Nanomagnetic composition 53 2003
 
MEDTRONIC, INC. (5)
5,070,605 Method for making an in-line pacemaker connector system 107 1990
5,735,884 Filtered feedthrough assembly for implantable medical device 57 1994
5,531,003 Fabricating a combination feedthrough/capacitor including a metallized tantalum or niobium pin 72 1994
5,759,197 Protective feedthrough 54 1995
6,349,025 Leak testable capacitive filtered feedthrough for an implantable medical device 36 2000
 
GREATBATCH LTD. (4)
5,650,759 Filtered feedthrough assembly having a mounted chip capacitor for medical implantable devices and method of manufacture therefor 115 1995
6,008,980 Hermetically sealed EMI feedthrough filter capacitor for human implant and other applications 80 1997
5,973,906 Chip capacitors and chip capacitor electromagnetic interference filters 125 1998
6,529,103 Internally grounded feedthrough filter capacitor with improved ground plane design for human implant and other applications 50 2000
 
PACIFIC COAST TECHNOLOGIES, INC. (4)
4,220,813 Terminal for medical instrument 48 1977
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4,421,947 Polycrystalline insulating material seals between spaced members such as a terminal pin and a ferrule 46 1981
4,456,786 Terminal assembly for heart pacemaker 37 1981
 
AMPHENOL CORPORATION (2)
4,500,159 Filter electrical connector 47 1983
4,741,710 Electrical connector having a monolithic capacitor 48 1986
 
ENDRESS + HAUSER GMBH + CO. KG (2)
5,539,611 Interface connection through an insulating part 34 1992
5,670,063 Method for making an interface connection through an insulating part 22 1996
 
BOSTON SCIENTIFIC SCIMED, INC. (1)
4,952,357 Method of making a polyimide balloon catheter 126 1988
 
DELAWARE CAPITAL FORMATION, INC. (1)
5,825,608 Feed-through filter capacitor assembly 54 1996
 
DYNAWAVE INCORPORATED (1)
4,737,601 Hermetically sealed electrical feedthrough and method of making same 51 1986
 
EMERSON ELECTRIC CO. (1)
4,362,792 Conductor seal assembly 37 1980
 
GENERAL ELECTRIC COMPANY (1)
4,951,672 Controlled impedance monitoring lead wires 31 1987
 
GREENWALD, HOWARD J. (1)
5,540,959 Process for preparing a coated substrate 45 1995
 
HITACHI, LTD. (1)
4,853,824 Through-type capacitor 10 1988
 
INVIVO RESEARCH, INC. (1)
4,991,580 Method of improving the quality of an electrocardiogram obtained from a patient undergoing magnetic resonance imaging 31 1989
 
LATHAM, DANIEL W. (1)
5,406,444 Coated tantalum feedthrough pin 51 1993
 
MAXWELL ELECTRONICS COMPONENTS GROUP, INC. (1)
5,751,539 EMI filter for human implantable heart defibrillators and pacemakers 132 1996
 
MAXWELL LABORATORIES, INC., SIERRA CAPACITOR FILTER DIVISION (1)
5,333,095 Feedthrough filter capacitor assembly for human implant 162 1993
 
MAXWELL TECHNOLOGIES ENERGY PRODUCTS DIVISION (1)
5,905,627 Internally grounded feedthrough filter capacitor 163 1997
 
MIROWSKI; MIECZYSLAW (1)
4,254,775 Implantable defibrillator and package therefor 122 1979
 
MORGAN CRUCIBLE COMPANY PLC, THE (1)
5,440,447 High temperature feed-through system and method for making same 22 1993
 
MRA LABORATORIES, INC., NORTH ADAMS, MA A CORP OF DE (1)
4,247,881 Discoidal monolithic ceramic capacitor 56 1979
 
MURATA MANUFACTURING CO., LTD. (1)
4,314,213 Through-type capacitor 47 1979
 
NEEDLE INDUSTRIES LIMITED (1)
4,248,237 Cardiac pacemakers 104 1978
 
NORLAND CORPORATION (1)
4,436,093 Cardiac pacer having active notch filter system 20 1982
 
PACESETTER, INC. (1)
5,620,476 Implantable medical device having shielded and filtered feedthrough assembly and methods for making such assembly 57 1995
 
SOUTHWEST RESEARCH INSTITUTE (1)
4,899,760 Noise rejecting detector for biomedical signals 18 1987
 
THE JOHNS HOPKINS UNIVERSITY (1)
5,217,010 ECG amplifier and cardiac pacemaker for use during magnetic resonance imaging 208 1991
 
THE METHODIST HOSPITAL SYSTEM (1)
4,887,609 Apparatus and method for filtering electrocardiograph signals 23 1987
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY (1)
5,827,997 Metal filaments for electromagnetic interference shielding 69 1994
 
U.S. MICROTEK COMPONENTS CORPORATION, A CORP OF MA (1)
4,424,551 Highly-reliable feed through/filter capacitor and method for making same 101 1982
 
UNITRODE CORPORATION (1)
5,032,692 Process for manufactoring hermetic high temperature filter packages and the products produced thereby 38 1989
 
X2Y ATTENUATORS, LLC (1)
5,142,430 Power line filter and surge protection circuit components and circuits 93 1990

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
CARDIAC PACEMAKERS, INC. (6)
8,049,489 Systems and methods for sensing external magnetic fields in implantable medical devices 1 2006
8,332,050 Medical device lead including a unifilar coil with improved torque transmission capacity and reduced MRI heating 0 2010
8,335,572 Medical device lead including a flared conductive coil 0 2010
8,391,994 MRI conditionally safe lead with low-profile multi-layer conductor for longitudinal expansion 0 2010
8,380,302 Implantable medical device including eddy current reducing capacitor 0 2010
8,401,671 RF rejecting lead 0 2012
 
GREATBATCH LTD. (2)
8,219,208 Frequency selective passive component networks for active implantable medical devices utilizing an energy dissipating surface 1 2010
8,275,466 Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active medical devices 0 2010
 
MRI INTERVENTIONS, INC. (2)
8,380,277 Electrical lead for an electronic device such as an implantable device 0 2011
8,433,421 MRI-safe high impedance lead systems 0 2011
 
BOSTON SCIENTIFIC NEUROMODULATION CORPORATION (1)
8,055,351 MRI-safe high impedance lead systems 2 2006
 
SURGI-VISION, INC. (1)
8,108,028 MRI systems having MRI compatible universal delivery cannulas with cooperating MRI antenna probes and related systems and methods 1 2005

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Jan 27, 2014
7.5 Year Payment $3600.00 $1800.00 $900.00 Jan 27, 2018
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 27, 2022
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00