CA2111617A1 - Current Sensor for Medical Devices Including Connector Cables - Google Patents
Current Sensor for Medical Devices Including Connector CablesInfo
- Publication number
- CA2111617A1 CA2111617A1 CA2111617A CA2111617A CA2111617A1 CA 2111617 A1 CA2111617 A1 CA 2111617A1 CA 2111617 A CA2111617 A CA 2111617A CA 2111617 A CA2111617 A CA 2111617A CA 2111617 A1 CA2111617 A1 CA 2111617A1
- Authority
- CA
- Canada
- Prior art keywords
- current
- source
- load
- conductor
- primary conductor
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3476—Powered trocars, e.g. electrosurgical cutting, lasers, powered knives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1487—Trocar-like, i.e. devices producing an enlarged transcutaneous opening
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
- A61B18/1233—Generators therefor with circuits for assuring patient safety
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00738—Depth, e.g. depth of ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00827—Current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
- A61B2018/1246—Generators therefor characterised by the output polarity
- A61B2018/126—Generators therefor characterised by the output polarity bipolar
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S128/00—Surgery
- Y10S128/908—Patient protection from electric shock
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Public Health (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Otolaryngology (AREA)
- Surgical Instruments (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
A current sensing device enables sensing the current being delivered from a source to a load at a medical implement connected to the distal end of a primary conductor connected between the source and the load in situations wherein distributed capacitance between the primary conductor and a return path to the source prevents a measurement of current at the source end of the primary conductor from being an accurate measurement of the delivered current. The current sensing device comprises a reference conductor which is located beside and twisted together with the primary conductor along the length thereof but which terminates short of, and is not connected to, the medical implement load, and a subtractor for subtracting the current flowing through the reference conductor from the total load current flowing to the medical implement so as to offset the effect of the distributed capacitance and to thereby produce a current measurement corresponding to the delivered current. The subtractor can comprise a current transformer through which the conductors extend in opposing relation. An integrity detector monitors whether the reference conductor is intact.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/009,598 | 1993-01-27 | ||
US08/009,598 US5432459A (en) | 1992-03-17 | 1993-01-27 | Leakage capacitance compensating current sensor for current supplied to medical device loads with unconnected reference conductor |
DE4405822A DE4405822A1 (en) | 1993-01-27 | 1994-02-23 | Current sensor for medical device e.g. electrosurgical trocars and RF ablation device |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2111617A1 true CA2111617A1 (en) | 1994-07-28 |
CA2111617C CA2111617C (en) | 1999-01-26 |
Family
ID=25934073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002111617A Expired - Lifetime CA2111617C (en) | 1993-01-27 | 1993-12-16 | Current sensor for medical devices including connector cables |
Country Status (7)
Country | Link |
---|---|
US (1) | US5432459A (en) |
JP (1) | JP3426311B2 (en) |
AU (1) | AU660866B2 (en) |
CA (1) | CA2111617C (en) |
FR (1) | FR2700857B1 (en) |
GB (1) | GB2274592B (en) |
IT (1) | ITGE940003A1 (en) |
Families Citing this family (73)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU671902B2 (en) * | 1993-06-01 | 1996-09-12 | Conmed Corporation | Current sensor for medical devices with continuity monitor |
US5785708A (en) * | 1995-09-19 | 1998-07-28 | Lp Systems Corporation | Epilator probeholder |
US7901400B2 (en) | 1998-10-23 | 2011-03-08 | Covidien Ag | Method and system for controlling output of RF medical generator |
US7364577B2 (en) | 2002-02-11 | 2008-04-29 | Sherwood Services Ag | Vessel sealing system |
US7137980B2 (en) | 1998-10-23 | 2006-11-21 | Sherwood Services Ag | Method and system for controlling output of RF medical generator |
GB2377175A (en) * | 2001-04-02 | 2003-01-08 | Smiths Group Plc | Automatic calibration of electro-surgery systems |
EP1501435B1 (en) | 2002-05-06 | 2007-08-29 | Covidien AG | Blood detector for controlling an esu |
CA2485904C (en) | 2002-05-31 | 2013-05-21 | Vidacare Corporation | Apparatus and method to access the bone marrow |
US20070049945A1 (en) | 2002-05-31 | 2007-03-01 | Miller Larry J | Apparatus and methods to install, support and/or monitor performance of intraosseous devices |
US10973545B2 (en) | 2002-05-31 | 2021-04-13 | Teleflex Life Sciences Limited | Powered drivers, intraosseous devices and methods to access bone marrow |
US8641715B2 (en) | 2002-05-31 | 2014-02-04 | Vidacare Corporation | Manual intraosseous device |
US11337728B2 (en) | 2002-05-31 | 2022-05-24 | Teleflex Life Sciences Limited | Powered drivers, intraosseous devices and methods to access bone marrow |
US8668698B2 (en) | 2002-05-31 | 2014-03-11 | Vidacare Corporation | Assembly for coupling powered driver with intraosseous device |
US7044948B2 (en) | 2002-12-10 | 2006-05-16 | Sherwood Services Ag | Circuit for controlling arc energy from an electrosurgical generator |
WO2004098385A2 (en) | 2003-05-01 | 2004-11-18 | Sherwood Services Ag | Method and system for programing and controlling an electrosurgical generator system |
US9504477B2 (en) | 2003-05-30 | 2016-11-29 | Vidacare LLC | Powered driver |
CA2542798C (en) | 2003-10-23 | 2015-06-23 | Sherwood Services Ag | Thermocouple measurement circuit |
EP1675499B1 (en) | 2003-10-23 | 2011-10-19 | Covidien AG | Redundant temperature monitoring in electrosurgical systems for safety mitigation |
US7396336B2 (en) | 2003-10-30 | 2008-07-08 | Sherwood Services Ag | Switched resonant ultrasonic power amplifier system |
US7131860B2 (en) | 2003-11-20 | 2006-11-07 | Sherwood Services Ag | Connector systems for electrosurgical generator |
US7300435B2 (en) * | 2003-11-21 | 2007-11-27 | Sherwood Services Ag | Automatic control system for an electrosurgical generator |
US7766905B2 (en) | 2004-02-12 | 2010-08-03 | Covidien Ag | Method and system for continuity testing of medical electrodes |
US7780662B2 (en) | 2004-03-02 | 2010-08-24 | Covidien Ag | Vessel sealing system using capacitive RF dielectric heating |
US20060041252A1 (en) | 2004-08-17 | 2006-02-23 | Odell Roger C | System and method for monitoring electrosurgical instruments |
US7422589B2 (en) * | 2004-08-17 | 2008-09-09 | Encision, Inc. | System and method for performing an electrosurgical procedure |
US7465302B2 (en) * | 2004-08-17 | 2008-12-16 | Encision, Inc. | System and method for performing an electrosurgical procedure |
US7628786B2 (en) | 2004-10-13 | 2009-12-08 | Covidien Ag | Universal foot switch contact port |
US9474564B2 (en) | 2005-03-31 | 2016-10-25 | Covidien Ag | Method and system for compensating for external impedance of an energy carrying component when controlling an electrosurgical generator |
US20070066971A1 (en) * | 2005-09-21 | 2007-03-22 | Podhajsky Ronald J | Method and system for treating pain during an electrosurgical procedure |
US8734438B2 (en) | 2005-10-21 | 2014-05-27 | Covidien Ag | Circuit and method for reducing stored energy in an electrosurgical generator |
US7947039B2 (en) | 2005-12-12 | 2011-05-24 | Covidien Ag | Laparoscopic apparatus for performing electrosurgical procedures |
US9186200B2 (en) | 2006-01-24 | 2015-11-17 | Covidien Ag | System and method for tissue sealing |
US7972328B2 (en) | 2006-01-24 | 2011-07-05 | Covidien Ag | System and method for tissue sealing |
CA2574935A1 (en) | 2006-01-24 | 2007-07-24 | Sherwood Services Ag | A method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm |
US7513896B2 (en) | 2006-01-24 | 2009-04-07 | Covidien Ag | Dual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling |
CA2574934C (en) | 2006-01-24 | 2015-12-29 | Sherwood Services Ag | System and method for closed loop monitoring of monopolar electrosurgical apparatus |
US8216223B2 (en) | 2006-01-24 | 2012-07-10 | Covidien Ag | System and method for tissue sealing |
US8147485B2 (en) | 2006-01-24 | 2012-04-03 | Covidien Ag | System and method for tissue sealing |
US8685016B2 (en) | 2006-01-24 | 2014-04-01 | Covidien Ag | System and method for tissue sealing |
US7651493B2 (en) | 2006-03-03 | 2010-01-26 | Covidien Ag | System and method for controlling electrosurgical snares |
US7648499B2 (en) | 2006-03-21 | 2010-01-19 | Covidien Ag | System and method for generating radio frequency energy |
US7651492B2 (en) | 2006-04-24 | 2010-01-26 | Covidien Ag | Arc based adaptive control system for an electrosurgical unit |
US8753334B2 (en) | 2006-05-10 | 2014-06-17 | Covidien Ag | System and method for reducing leakage current in an electrosurgical generator |
US7731717B2 (en) | 2006-08-08 | 2010-06-08 | Covidien Ag | System and method for controlling RF output during tissue sealing |
US8034049B2 (en) | 2006-08-08 | 2011-10-11 | Covidien Ag | System and method for measuring initial tissue impedance |
US8944069B2 (en) | 2006-09-12 | 2015-02-03 | Vidacare Corporation | Assemblies for coupling intraosseous (IO) devices to powered drivers |
US7794457B2 (en) | 2006-09-28 | 2010-09-14 | Covidien Ag | Transformer for RF voltage sensing |
US8777941B2 (en) | 2007-05-10 | 2014-07-15 | Covidien Lp | Adjustable impedance electrosurgical electrodes |
US7834484B2 (en) | 2007-07-16 | 2010-11-16 | Tyco Healthcare Group Lp | Connection cable and method for activating a voltage-controlled generator |
US8216220B2 (en) | 2007-09-07 | 2012-07-10 | Tyco Healthcare Group Lp | System and method for transmission of combined data stream |
US8512332B2 (en) | 2007-09-21 | 2013-08-20 | Covidien Lp | Real-time arc control in electrosurgical generators |
US8979834B2 (en) * | 2008-03-27 | 2015-03-17 | Bovie Medical Corporation | Laparoscopic electrosurgical electrical leakage detection |
US8100897B2 (en) * | 2008-03-27 | 2012-01-24 | Bovie Medical Corporation | Laparoscopic electrosurgical electrical leakage detection |
EP2265196B9 (en) | 2008-03-31 | 2013-10-02 | Applied Medical Resources Corporation | Electrosurgical system with means for measuring permittivity and conductivity of tissue |
US8226639B2 (en) | 2008-06-10 | 2012-07-24 | Tyco Healthcare Group Lp | System and method for output control of electrosurgical generator |
US8262652B2 (en) | 2009-01-12 | 2012-09-11 | Tyco Healthcare Group Lp | Imaginary impedance process monitoring and intelligent shut-off |
US8882768B2 (en) | 2009-04-24 | 2014-11-11 | Megadyne Medical Products, Inc. | Hand piece with adjustable utility conduit |
US8882767B2 (en) | 2009-04-24 | 2014-11-11 | Megadyne Medical Products, Inc. | Electrosurgical instrument with adjustable utility conduit |
US8790335B2 (en) | 2009-08-28 | 2014-07-29 | Covidien Lp | Electrosurgical generator |
EP2621389B1 (en) | 2010-10-01 | 2015-03-18 | Applied Medical Resources Corporation | Electrosurgical instrument with jaws and with an electrode |
US9259260B2 (en) | 2013-03-14 | 2016-02-16 | Megadyne Medical Products, Inc. | Fluid evacuation device |
US9375253B2 (en) | 2013-03-14 | 2016-06-28 | Megadyne Medical Products, Inc. | Electrosurgical instrument |
USD709196S1 (en) | 2013-03-15 | 2014-07-15 | Megadyne Medical Products, Inc. | Hand piece |
US9872719B2 (en) | 2013-07-24 | 2018-01-23 | Covidien Lp | Systems and methods for generating electrosurgical energy using a multistage power converter |
US9655670B2 (en) | 2013-07-29 | 2017-05-23 | Covidien Lp | Systems and methods for measuring tissue impedance through an electrosurgical cable |
AU2015258819B2 (en) | 2014-05-16 | 2019-12-12 | Applied Medical Resources Corporation | Electrosurgical system |
EP3369392A1 (en) | 2014-05-30 | 2018-09-05 | Applied Medical Resources Corporation | Electrosurgical seal and dissection systems |
US10420603B2 (en) | 2014-12-23 | 2019-09-24 | Applied Medical Resources Corporation | Bipolar electrosurgical sealer and divider |
USD748259S1 (en) | 2014-12-29 | 2016-01-26 | Applied Medical Resources Corporation | Electrosurgical instrument |
JP7174427B2 (en) | 2016-11-17 | 2022-11-17 | アピックス メディカル コーポレーション | Electrosurgical device including dynamic leakage current compensation and dynamic RF modulation |
WO2019195221A1 (en) * | 2018-04-06 | 2019-10-10 | Tendonova Corporation | Improved devices for tissue treatment and methods of use thereof |
US11864812B2 (en) | 2018-09-05 | 2024-01-09 | Applied Medical Resources Corporation | Electrosurgical generator control system |
KR20210092263A (en) | 2018-11-16 | 2021-07-23 | 어플라이드 메디컬 리소시스 코포레이션 | electrosurgical system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3946738A (en) * | 1974-10-24 | 1976-03-30 | Newton David W | Leakage current cancelling circuit for use with electrosurgical instrument |
US4094320A (en) * | 1976-09-09 | 1978-06-13 | Valleylab, Inc. | Electrosurgical safety circuit and method of using same |
US4437464A (en) * | 1981-11-09 | 1984-03-20 | C.R. Bard, Inc. | Electrosurgical generator safety apparatus |
US4532510A (en) * | 1982-06-24 | 1985-07-30 | Sereg, S.A. | Measuring apparatus having a sensor located remotely from its electricity power supply |
DE3626698C2 (en) * | 1985-08-26 | 1993-12-02 | Siemens Ag | HF surgery device |
DE3621572C2 (en) * | 1985-12-16 | 1994-07-14 | Siemens Ag | Circuit arrangement for operating an HF surgical device |
EP0239807B1 (en) * | 1986-03-04 | 1991-04-17 | Siemens Aktiengesellschaft | Capacitive intrusion protection system |
US5071419A (en) * | 1990-04-30 | 1991-12-10 | Everest Medical Corporation | Percutaneous laparoscopic cholecystectomy instrument |
US5152762A (en) * | 1990-11-16 | 1992-10-06 | Birtcher Medical Systems, Inc. | Current leakage control for electrosurgical generator |
GB9119695D0 (en) * | 1991-09-14 | 1991-10-30 | Smiths Industries Plc | Electrosurgery equipment |
AU659261B2 (en) * | 1992-06-19 | 1995-05-11 | Conmed Corporation | Electrosurgical trocar assembly |
DE4237761C2 (en) * | 1992-11-09 | 2002-07-11 | Storz Karl Gmbh & Co Kg | High-frequency surgery facility |
-
1993
- 1993-01-27 US US08/009,598 patent/US5432459A/en not_active Expired - Lifetime
- 1993-12-16 CA CA002111617A patent/CA2111617C/en not_active Expired - Lifetime
- 1993-12-16 GB GB9325774A patent/GB2274592B/en not_active Expired - Lifetime
- 1993-12-28 JP JP33469893A patent/JP3426311B2/en not_active Expired - Lifetime
-
1994
- 1994-01-05 AU AU53017/94A patent/AU660866B2/en not_active Expired
- 1994-01-12 IT IT94GE000003A patent/ITGE940003A1/en unknown
- 1994-01-19 FR FR9400556A patent/FR2700857B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2111617C (en) | 1999-01-26 |
AU660866B2 (en) | 1995-07-06 |
GB2274592B (en) | 1996-12-18 |
ITGE940003A0 (en) | 1994-01-12 |
ITGE940003A1 (en) | 1995-07-12 |
JP3426311B2 (en) | 2003-07-14 |
AU5301794A (en) | 1994-08-18 |
GB9325774D0 (en) | 1994-02-16 |
FR2700857B1 (en) | 1996-03-01 |
GB2274592A (en) | 1994-08-03 |
JPH06233780A (en) | 1994-08-23 |
US5432459A (en) | 1995-07-11 |
FR2700857A1 (en) | 1994-07-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20131216 |