GB1123365A - Portable neuromuscular blockade monitor - Google Patents

Portable neuromuscular blockade monitor

Info

Publication number
GB1123365A
GB1123365A GB53427/65A GB5342765A GB1123365A GB 1123365 A GB1123365 A GB 1123365A GB 53427/65 A GB53427/65 A GB 53427/65A GB 5342765 A GB5342765 A GB 5342765A GB 1123365 A GB1123365 A GB 1123365A
Authority
GB
United Kingdom
Prior art keywords
determining
monitor
muscle
transformer
relaxant
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.)
Expired
Application number
GB53427/65A
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.)
Wellcome Foundation Ltd
Original Assignee
Wellcome Foundation 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 Wellcome Foundation Ltd filed Critical Wellcome Foundation Ltd
Publication of GB1123365A publication Critical patent/GB1123365A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1104—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb induced by stimuli or drugs
    • A61B5/1106—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb induced by stimuli or drugs to assess neuromuscular blockade, e.g. to estimate depth of anaesthesia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/36014—External stimulators, e.g. with patch electrodes
    • A61N1/36021—External stimulators, e.g. with patch electrodes for treatment of pain
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2505/00—Evaluating, monitoring or diagnosing in the context of a particular type of medical care
    • A61B2505/05—Surgical care
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6825—Hand
    • A61B5/6826—Finger

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Pathology (AREA)
  • Neurology (AREA)
  • Physiology (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Medicinal Chemistry (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Chemical & Material Sciences (AREA)
  • Anesthesiology (AREA)
  • Pain & Pain Management (AREA)
  • Electrotherapy Devices (AREA)

Abstract

A portable neuromuscular blockade monitor having application for (i) determining the type and degree of blockade present in a patient, (ii) determining the correct time for administration of muscle-relaxant drug or antagonistic drug, or (iii) determining the amount of muscle-relaxant or antagonist to be administered, comprises a dry battery of greater than zero but up to 12V output, a transistorized oscillator circuit to convert the D.C. energy from the battery into a series of electrical pulses which are of two fixed frequencies, the first being in the range of 1 pulse per second to 1 pulse per 10 seconds and the second being in the range p 25 to 250 pulses per second, a switch means for enabling either of these frequencies to be selected and maintained, a step-up transformer and potential divider on the stepped up voltage side of the transformer and a pair of terminals to take the pulse output from the device via the potential divider.
GB53427/65A 1964-12-21 1965-12-16 Portable neuromuscular blockade monitor Expired GB1123365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US419949A US3364929A (en) 1964-12-21 1964-12-21 Method for administering muscle relaxant drug

Publications (1)

Publication Number Publication Date
GB1123365A true GB1123365A (en) 1968-08-14

Family

ID=23664430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53427/65A Expired GB1123365A (en) 1964-12-21 1965-12-16 Portable neuromuscular blockade monitor

Country Status (9)

Country Link
US (1) US3364929A (en)
BE (1) BE674054A (en)
CH (1) CH428965A (en)
DE (1) DE1539104B2 (en)
FR (1) FR1466608A (en)
GB (1) GB1123365A (en)
IL (1) IL24839A (en)
NL (1) NL6516659A (en)
SE (1) SE340324B (en)

Families Citing this family (110)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3570473A (en) * 1966-02-28 1971-03-16 Cargille Scient Inc Manually controllable medical aid oscillator instrument
US3468302A (en) * 1966-05-20 1969-09-23 Godfrey Brooke Skin resistance reaction time testing apparatus
US3513834A (en) * 1966-11-21 1970-05-26 Hitachi Ltd Anesthetic depth measuring system
US3618601A (en) * 1969-10-16 1971-11-09 Thatcher W Richardson Iontophoresis unit
US3898983A (en) * 1973-10-03 1975-08-12 James O Elam Device and method for detecting the degree of muscle relaxation of a medical patient
US3908669A (en) * 1973-12-17 1975-09-30 American Acupuncture Medical I Apparatus for use by physicians in acupuncture research
US4291705A (en) * 1979-09-10 1981-09-29 The Regents Of The University Of California Neuromuscular block monitor
US4387723A (en) * 1980-12-09 1983-06-14 Wisconsin Alumni Research Foundation Method and apparatus for determining the level of neuromuscular block in a patient
US4399821A (en) * 1981-02-19 1983-08-23 Bowers David L Free moving animal physiological monitoring and identification system and method
US4411268A (en) * 1982-02-10 1983-10-25 Medtronic, Inc. Muscle stimulator
US4807643A (en) * 1982-08-16 1989-02-28 University Of Iowa Research Foundation Digital electroneurometer
FI73878C (en) * 1983-06-10 1987-12-10 Instrumentarium Oy FOERFARANDE FOER VIDAREUTVECKLING AV NERVMUSKELANSLUTNINGS MAETNING.
US4558704A (en) * 1983-12-15 1985-12-17 Wright State University Hand control system
US4748987A (en) * 1984-02-21 1988-06-07 The University Of Michigan Acoustic myography
IL71537A0 (en) * 1984-04-12 1984-07-31 Calmanovici Sergiu Method of functional assessment of cancer humoral factor
US4832682A (en) * 1984-08-08 1989-05-23 Survival Technology, Inc. Injection method and apparatus with electrical blood absorbing stimulation
US4795433A (en) * 1985-05-20 1989-01-03 Survival Technology, Inc. Automatic injector for emergency treatment
GR861289B (en) * 1985-05-20 1986-09-16 Survival Technology Injection method and apparatus with electrical blood absorbing stimulation
US4817628A (en) * 1985-10-18 1989-04-04 David L. Zealear System and method for evaluating neurological function controlling muscular movements
US4986280A (en) * 1988-07-20 1991-01-22 Arthur D. Little, Inc. Hand position/measurement control system
US4962766A (en) * 1989-07-19 1990-10-16 Herzon Garrett D Nerve locator and stimulator
US5020542A (en) * 1990-04-16 1991-06-04 Charles Rossmann Method of measuring skin sensitivity to electrical stimulation
US5085226A (en) * 1990-05-30 1992-02-04 Trustees Of Boston University Force monitoring apparatus for back muscles
US5284153A (en) * 1992-04-14 1994-02-08 Brigham And Women's Hospital Method for locating a nerve and for protecting nerves from injury during surgery
US5775331A (en) * 1995-06-07 1998-07-07 Uromed Corporation Apparatus and method for locating a nerve
AU3496099A (en) * 1998-04-17 1999-11-08 Stryker Instruments Neuromuscular electrical stimulation for preventing deep vein thrombosis
US6564078B1 (en) 1998-12-23 2003-05-13 Nuvasive, Inc. Nerve surveillance cannula systems
WO2000038574A1 (en) 1998-12-23 2000-07-06 Nuvasive, Inc. Nerve surveillance cannulae systems
CA2591678C (en) * 1999-03-07 2008-05-20 Active Implants Corporation Method and apparatus for computerized surgery
JP4854900B2 (en) * 1999-11-24 2012-01-18 ヌバシブ， インコーポレイテッド EMG measurement method
US6466817B1 (en) * 1999-11-24 2002-10-15 Nuvasive, Inc. Nerve proximity and status detection system and method
US6312392B1 (en) * 2000-04-06 2001-11-06 Garrett D. Herzon Bipolar handheld nerve locator and evaluator
AU2001263239A1 (en) * 2000-05-18 2001-11-26 Nuvasive, Inc. Tissue discrimination and applications in medical procedures
AU2001269768B2 (en) 2000-06-08 2005-09-01 Nuvasive, Inc. Relative nerve movement and status detection system and method
US6553245B1 (en) * 2000-11-02 2003-04-22 Lawrence J. Grace Method and apparatus for self-diagnostic evaluation of nerve sensory latency
US20030105503A1 (en) * 2001-06-08 2003-06-05 Nuvasive, Inc. Relative nerve movement and status detection system and method
EP1417000B1 (en) * 2001-07-11 2018-07-11 Nuvasive, Inc. System for determining nerve proximity during surgery
WO2003026482A2 (en) * 2001-09-25 2003-04-03 Nuvasive, Inc. System and methods for performing surgical procedures and assessments
US7664544B2 (en) 2002-10-30 2010-02-16 Nuvasive, Inc. System and methods for performing percutaneous pedicle integrity assessments
US8147421B2 (en) * 2003-01-15 2012-04-03 Nuvasive, Inc. System and methods for determining nerve direction to a surgical instrument
US7582058B1 (en) 2002-06-26 2009-09-01 Nuvasive, Inc. Surgical access system and related methods
US8137284B2 (en) * 2002-10-08 2012-03-20 Nuvasive, Inc. Surgical access system and related methods
US7691057B2 (en) 2003-01-16 2010-04-06 Nuvasive, Inc. Surgical access system and related methods
US7819801B2 (en) * 2003-02-27 2010-10-26 Nuvasive, Inc. Surgical access system and related methods
US20040225228A1 (en) * 2003-05-08 2004-11-11 Ferree Bret A. Neurophysiological apparatus and procedures
WO2005013805A2 (en) * 2003-08-05 2005-02-17 Nuvasive, Inc. Systemand methods for performing dynamic pedicle integrity assessments
WO2005030318A1 (en) 2003-09-25 2005-04-07 Nuvasive, Inc. Surgical access system and related methods
US7905840B2 (en) 2003-10-17 2011-03-15 Nuvasive, Inc. Surgical access system and related methods
US8313430B1 (en) 2006-01-11 2012-11-20 Nuvasive, Inc. Surgical access system and related methods
WO2006042241A2 (en) 2004-10-08 2006-04-20 Nuvasive, Inc. Surgical access system and related methods
US7775966B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. Non-invasive pressure measurement in a fluid adjustable restrictive device
US7785253B1 (en) 2005-01-31 2010-08-31 Nuvasive, Inc. Surgical access system and related methods
US20060173374A1 (en) * 2005-01-31 2006-08-03 Neubardt Seth L Electrically insulated surgical probing tool
US7643884B2 (en) 2005-01-31 2010-01-05 Warsaw Orthopedic, Inc. Electrically insulated surgical needle assembly
US8568331B2 (en) * 2005-02-02 2013-10-29 Nuvasive, Inc. System and methods for monitoring during anterior surgery
US8092455B2 (en) * 2005-02-07 2012-01-10 Warsaw Orthopedic, Inc. Device and method for operating a tool relative to bone tissue and detecting neural elements
US20060178594A1 (en) * 2005-02-07 2006-08-10 Neubardt Seth L Apparatus and method for locating defects in bone tissue
US8016744B2 (en) * 2005-02-24 2011-09-13 Ethicon Endo-Surgery, Inc. External pressure-based gastric band adjustment system and method
US7699770B2 (en) 2005-02-24 2010-04-20 Ethicon Endo-Surgery, Inc. Device for non-invasive measurement of fluid pressure in an adjustable restriction device
US7775215B2 (en) 2005-02-24 2010-08-17 Ethicon Endo-Surgery, Inc. System and method for determining implanted device positioning and obtaining pressure data
US8066629B2 (en) 2005-02-24 2011-11-29 Ethicon Endo-Surgery, Inc. Apparatus for adjustment and sensing of gastric band pressure
US7658196B2 (en) 2005-02-24 2010-02-09 Ethicon Endo-Surgery, Inc. System and method for determining implanted device orientation
US7927270B2 (en) * 2005-02-24 2011-04-19 Ethicon Endo-Surgery, Inc. External mechanical pressure sensor for gastric band pressure measurements
US20060200023A1 (en) * 2005-03-04 2006-09-07 Sdgi Holdings, Inc. Instruments and methods for nerve monitoring in spinal surgical procedures
US8740783B2 (en) * 2005-07-20 2014-06-03 Nuvasive, Inc. System and methods for performing neurophysiologic assessments with pressure monitoring
US8328851B2 (en) * 2005-07-28 2012-12-11 Nuvasive, Inc. Total disc replacement system and related methods
US8206312B2 (en) * 2005-09-22 2012-06-26 Nuvasive, Inc. Multi-channel stimulation threshold detection algorithm for use in neurophysiology monitoring
US8568317B1 (en) 2005-09-27 2013-10-29 Nuvasive, Inc. System and methods for nerve monitoring
US20080249806A1 (en) * 2006-04-06 2008-10-09 Ethicon Endo-Surgery, Inc Data Analysis for an Implantable Restriction Device and a Data Logger
US8870742B2 (en) * 2006-04-06 2014-10-28 Ethicon Endo-Surgery, Inc. GUI for an implantable restriction device and a data logger
US8152710B2 (en) * 2006-04-06 2012-04-10 Ethicon Endo-Surgery, Inc. Physiological parameter analysis for an implantable restriction device and a data logger
US20080250341A1 (en) * 2006-04-06 2008-10-09 Ethicon Endo-Surgery, Inc. Gui With Trend Analysis for an Implantable Restriction Device and a Data Logger
AU2008236665B2 (en) * 2007-04-03 2013-08-22 Nuvasive, Inc. Neurophysiologic monitoring system
US8187163B2 (en) * 2007-12-10 2012-05-29 Ethicon Endo-Surgery, Inc. Methods for implanting a gastric restriction device
US8100870B2 (en) 2007-12-14 2012-01-24 Ethicon Endo-Surgery, Inc. Adjustable height gastric restriction devices and methods
US8142452B2 (en) * 2007-12-27 2012-03-27 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8377079B2 (en) 2007-12-27 2013-02-19 Ethicon Endo-Surgery, Inc. Constant force mechanisms for regulating restriction devices
US20090171379A1 (en) * 2007-12-27 2009-07-02 Ethicon Endo-Surgery, Inc. Fluid logic for regulating restriction devices
US8192350B2 (en) 2008-01-28 2012-06-05 Ethicon Endo-Surgery, Inc. Methods and devices for measuring impedance in a gastric restriction system
US8591395B2 (en) 2008-01-28 2013-11-26 Ethicon Endo-Surgery, Inc. Gastric restriction device data handling devices and methods
US8337389B2 (en) 2008-01-28 2012-12-25 Ethicon Endo-Surgery, Inc. Methods and devices for diagnosing performance of a gastric restriction system
US20090192534A1 (en) * 2008-01-29 2009-07-30 Ethicon Endo-Surgery, Inc. Sensor trigger
US8221439B2 (en) * 2008-02-07 2012-07-17 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using kinetic motion
US7844342B2 (en) 2008-02-07 2010-11-30 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using light
US20090204179A1 (en) * 2008-02-07 2009-08-13 Ethicon Endo-Surgery, Inc. Powering implantable restriction systems using temperature
US8114345B2 (en) * 2008-02-08 2012-02-14 Ethicon Endo-Surgery, Inc. System and method of sterilizing an implantable medical device
US8057492B2 (en) * 2008-02-12 2011-11-15 Ethicon Endo-Surgery, Inc. Automatically adjusting band system with MEMS pump
US8591532B2 (en) 2008-02-12 2013-11-26 Ethicon Endo-Sugery, Inc. Automatically adjusting band system
US8034065B2 (en) * 2008-02-26 2011-10-11 Ethicon Endo-Surgery, Inc. Controlling pressure in adjustable restriction devices
US8187162B2 (en) * 2008-03-06 2012-05-29 Ethicon Endo-Surgery, Inc. Reorientation port
US20090228063A1 (en) * 2008-03-06 2009-09-10 Ethicon Endo-Surgery, Inc. System and method of communicating with an implantable antenna
US8233995B2 (en) * 2008-03-06 2012-07-31 Ethicon Endo-Surgery, Inc. System and method of aligning an implantable antenna
US20090299439A1 (en) * 2008-06-02 2009-12-03 Warsaw Orthopedic, Inc. Method, system and tool for surgical procedures
US8287597B1 (en) 2009-04-16 2012-10-16 Nuvasive, Inc. Method and apparatus for performing spine surgery
US9351845B1 (en) 2009-04-16 2016-05-31 Nuvasive, Inc. Method and apparatus for performing spine surgery
US9392953B1 (en) 2010-09-17 2016-07-19 Nuvasive, Inc. Neurophysiologic monitoring
US8790406B1 (en) 2011-04-01 2014-07-29 William D. Smith Systems and methods for performing spine surgery
WO2013028571A1 (en) 2011-08-19 2013-02-28 Lanx, Inc. Surgical retractor system and methods of use
US9198765B1 (en) 2011-10-31 2015-12-01 Nuvasive, Inc. Expandable spinal fusion implants and related methods
US11877860B2 (en) 2012-11-06 2024-01-23 Nuvasive, Inc. Systems and methods for performing neurophysiologic monitoring during spine surgery
US11259737B2 (en) 2012-11-06 2022-03-01 Nuvasive, Inc. Systems and methods for performing neurophysiologic monitoring during spine surgery
US9757067B1 (en) 2012-11-09 2017-09-12 Nuvasive, Inc. Systems and methods for performing neurophysiologic monitoring during spine surgery
US9757072B1 (en) 2013-02-11 2017-09-12 Nuvasive, Inc. Waveform marker placement algorithm for use in neurophysiologic monitoring
ES2959159T3 (en) 2013-02-15 2024-02-21 Senzime Ab Publ Electrode systems for use with medical monitoring systems
US10098585B2 (en) 2013-03-15 2018-10-16 Cadwell Laboratories, Inc. Neuromonitoring systems and methods
US10420480B1 (en) 2014-09-16 2019-09-24 Nuvasive, Inc. Systems and methods for performing neurophysiologic monitoring
EP3223692B1 (en) 2014-11-26 2022-02-02 SafeOp Surgical, Inc. A device and means of assessing neuromuscular junction status with higher fidelity
US9935395B1 (en) 2017-01-23 2018-04-03 Cadwell Laboratories, Inc. Mass connection plate for electrical connectors
US11253182B2 (en) 2018-05-04 2022-02-22 Cadwell Laboratories, Inc. Apparatus and method for polyphasic multi-output constant-current and constant-voltage neurophysiological stimulation
US11443649B2 (en) 2018-06-29 2022-09-13 Cadwell Laboratories, Inc. Neurophysiological monitoring training simulator

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493155A (en) * 1947-01-09 1950-01-03 Mine Safety Appliances Co Apparatus for treating skin diseases
US2979055A (en) * 1954-06-18 1961-04-11 Burroughs Wellcome Co Method for the administration of muscle relaxant drugs
US2840069A (en) * 1954-09-25 1958-06-24 Nat Res Dev Penetrating instruments such as hypodermic needles and their use in an imbibition pressure meter
US2808826A (en) * 1956-01-19 1957-10-08 Teca Corp Electro-diagnostic apparatus and a circuit therefor
US2830578A (en) * 1957-01-31 1958-04-15 Mark E Degroff Electro-sonic apparatus
GB990296A (en) * 1961-09-27 1965-04-28 Tateisi Denki Kabushikikaisha An instrument for locating particular cutaneous points caused by viscero-vascular reflex
US3200814A (en) * 1963-03-12 1965-08-17 Ellis R Taylor Apparatus for measuring reflexes, tremors and the like
US3258007A (en) * 1963-07-19 1966-06-28 Peter V Karpovich Rotary electrogoniometer for measuring degree of rotation of the forearm
US3292620A (en) * 1963-07-30 1966-12-20 Instro Dynamics Corp Electric desensitizer

Also Published As

Publication number Publication date
NL6516659A (en) 1966-06-22
DE1539104A1 (en) 1970-03-12
SE340324B (en) 1971-11-15
IL24839A (en) 1969-07-30
FR1466608A (en) 1967-01-20
BE674054A (en) 1966-06-20
US3364929A (en) 1968-01-23
CH428965A (en) 1967-01-31
DE1539104B2 (en) 1971-02-25

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