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WO1996010358A1 - Procede et dispositif principalement concu pour l'electrogastrographie et l'electro-urographie - Google Patents

Procede et dispositif principalement concu pour l'electrogastrographie et l'electro-urographie Download PDF

Info

Publication number
WO1996010358A1
WO1996010358A1 PCT/SE1995/001120 SE9501120W WO9610358A1 WO 1996010358 A1 WO1996010358 A1 WO 1996010358A1 SE 9501120 W SE9501120 W SE 9501120W WO 9610358 A1 WO9610358 A1 WO 9610358A1
Authority
WO
WIPO (PCT)
Prior art keywords
signals
patient
impedance
primarily
bladder
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/SE1995/001120
Other languages
English (en)
Inventor
Anders Essen-Möller
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.)
Medtronic Inc
Original Assignee
Synectics Medical AB
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 claimed from SE9403321A external-priority patent/SE9403321D0/xx
Application filed by Synectics Medical AB filed Critical Synectics Medical AB
Priority to AU36246/95A priority Critical patent/AU3624695A/en
Publication of WO1996010358A1 publication Critical patent/WO1996010358A1/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
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/389—Electromyography [EMG]
    • A61B5/391—Electromyography [EMG] of genito-urinary organs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/389—Electromyography [EMG]
    • A61B5/392—Detecting gastrointestinal contractions

Definitions

  • the present invention relates a method for principally electrogast ⁇ rography (EGG) and electrourography (EUG) comprizing a measuring of principally rythmic depolarization signals of mainly a gastrointestinal origin or a vesical origin.
  • the invention also relates to a device for perfo ⁇ iiing the method.
  • Gastric depolarization signals normally occur with a frequency of about three cycles per minut. Other frequencies occur in other other parts. Some, but not all depolarization signals are considered to provoke gast ⁇ ric contractions, but all gastric contractions are considered, as also with EKG, to be preceded by electric depolarization signals. Inadequate depolarization signals might occur and it has proved that anormal signals occur with e.g. stomach suffering, such as indisposition, nervous bladder, incontinence, etc. Moreover, EGG presents thus a new way to achieve gastric motility with the advantage to be a noninvasive method to replace and/or complement other, more known methods, such as ultrasonics, gastric emptying, etc. Ambulatoric EGG can provide an easily usable, noninvasive and inexpensive method to analyse gastric activity e.g. in a domestic environment and can in the medical science facilitate a diag ⁇ nosis of gastric motility and to prescribe an adequate therapy.
  • EUG is a new method for a noninvasive examination of the urinary bladder.
  • the desciption is con ⁇ centrated to EGG, but all that may be stated in this respect is generally applicable even to EUG.
  • EGG electrical cyclic signals from the stomach
  • the present invention provides the possibility for an accurate EGG in such a way that a diagnosis can be achieved with essentially improved accuracy and stringency, the adaptation to research purposes thus being essentially increased.
  • the improved diagnosis are, as is well known, en ⁇ tailing secondary advantages in form of a reduced convalescence, etc.
  • the invention thus relates to a method according to the first part of claim 1.
  • the method is especially characterized in what is stated in the characterizing part of said claim.
  • the invention further relates to a device according to the first part of claim 8.
  • the device is especially characterized in what is stated in the xharacterizing part of said last mentioned claim.
  • Figure 1 schematically shows the general configuration of a preferred embodiment of a portable system for EGG data recording according to the invention
  • Figure 2 shows a block diagram illustrating the overall logic circuit function of an EGG data recording device acccording to the invention.
  • the portable EGG and analyzing system comprises a data recording device 10 connected to external lines 11 ending in impe ⁇ dance converting electrodes 20 which then are connected to to skin based readable electrodes 22, preferably to at least two.
  • the recording device is accomplished as a modification of the Digitrapper Mklll for recording pH-data (available from Synectics Medical Inc., Irving, Texas).
  • a set of four keys 12 are adapted to control the data recording device and to let the patient register periodical data for events during recording.
  • a display 13 cooperates to service the device 10 by (1) showing a menue driven control system during the preparation and the analys of the recording and (2) showing the recorded data on line during recording.
  • the impedance converting electrodes 20 comprize a field effect transistor circuit operating as an impedance converter with an amplifying factor 1.
  • the electrodes 20 are connected to surface electrodes 22 placed on top of the patients stomach 23, small intestine, bladder, etc.
  • the EGG or EUG signals are recorded and sent through said impedance converting electrodes 20 and further through said lines 11 to the data recording device 10.
  • the device 10 When the EGG or EUG recording operations are completed, data are sent from the device 10 into a computer 15, e.g. a PC, to analyze the recorded gastric signals as to the gastric function and generates a report of analysis (not shown).
  • a computer e.g. a PC
  • the device 10 may comprise a computer for a corresponding handling of said data.
  • the standard report shows a spectrum of variables calculated by means of a fast frequency conversion, FFT, of the EGG signals from e.g. three preprandial periods and three selected postprandial periods.
  • the recording device is sampling EGG data with a sampling freequency of about 2Hz during recording. These data are used and each line of the spectrum of variables uses 512 samplings during each cycle of four minutes.
  • the X-axis shows the cycles per minut and the Y-axis the variable.
  • the Z-axis shows the time intervals.
  • next line of four minutes is using both the samplings from the previous line and new samplings and overlaps the previous line by 75 percent and the second line thus differs from the first one by one minute. Thereafter, a third line is achieved in the same way etc. until a complete period of interest may be presented.
  • the data recording system is adapted so, that retractable kolyt electrodes with low polarization 22 are recording the EGG signals with 20 to 100 microvolt and transfer said signals to an impedance converter 20 with an amplifying factor 1.
  • the signals are then sent to the data recording device 10 via an eight pin phone adapter 60, figure 2. Moreover, the signals are according to figure 2, after an analogue amplifying step with an optimal automatic offset 61 and an amplifying portion regulator 62, sent to an anologue/di- gital converter in the microprocessor unit 63.
  • the sampling speed is set by the operative system (OS) and is controlled by means of a real time clock 64.
  • OS operative system
  • a RAM 65 is used to save data.
  • the OS is programmed in a PROM 66.
  • An ASIC-circuit is used for address decoding.
  • the display 68 has 2 x 16 alfanumeric characters for recording the menue and the periodical values.
  • the keyboard 69 is a board with four keys to control any menue events and patients events and for an automatic ON/OFF control.
  • a contact 70 with 15 pins is the output channel to a computer or a printer 71.
  • the voltage control unit 72 is supplied by a 9 volt standard alkali battery. As a part of this unit a chargeable litium battery is provided as a backup for the RAM 65 and the clock 64.
  • a control circuit 73 takes care of any eventual absence of current by means of a NMI 74 and is also part of the current dsitribution system.
  • the microprocessor unit 63 has six inputs with item 74 being ana ⁇ logue inputs, 76 and 77 are used for data and addresses, 78 and 79 are used for parallel communication and 80 is used for serial communica ⁇ tion.
  • EGG based gastointestinal measurements also comple ⁇ mentary measurements/researches can be performed according to the invention to achieve improved diagnostic possibilities and a more reliable diagnosis.
  • the EGG measurements are supplemented with impedance measurements with a larger or smaller number of sensors of a convenient type applied to the skin at interesting measuring spots, i.a. in connection to the EGG electrodes.
  • gastric ultrasonis studies can be performed as a supple ⁇ ment, contractions and stomach emptying and bladder emptying possibly be detected by means of ultrasonics, the results being correlated with the EGG or EUG measurements.
  • the measuring of high frequency vibrations according to GB-2,211,094 might also be performed as a supplement to the EGG measurements, any sound then being analyzed.
  • a preferably portable or ambulatoric recording device for i.a. EGG data with an analysing system for said data can thus be used, a real time analysis then possibly being performed and presented to the device or dealt with afterwards by means of a computer and presented on the screen or by printed matter.
  • EGG Digitrapper EGG Digitrapper
  • EGG Digitrapper EGG Digitrapper
  • This latter collects EGG sampling values from the patient antrum or corrsponding part, e.g. four times each second and stores the mean value each second in a digital memory.
  • the patient can store events such as meals, etc.
  • the stored values can be electrically transmitted to the examiner or in form of the device 10 and an analysis might be performed after a transmission to a computer or by means of the analysis system in the device.
  • the invention also includes a special auto-offset and an automatic amplifying control to standardize the EGG signals from the patients with various stomach wall ticknesses, skin resistance, non identical electrode positions, etc.
  • EGG measurements are combined with further measure ⁇ ments the results of these measurements are aslo recorded by means of the device, Digitrapper, and are used as a basis for a total analysis.
  • the analysing system comprising pro ⁇ grams, the soft ware, is adapted to interpret the recorded signals in a fil ⁇ tered form and relate these to i.a. gastric performance.
  • the system for an EGG analysis is preferably based on the Multigram Version 5.10 for motility procedures from Gastrosoft Inc., Irving, Texas, this version being essentially changed to analyse the EGG and to report the EGG function in such a form as to be clinically and scientifically usable.
  • the main menue of the system cocmprises in one embodiment six choices: Patient Records, Read Digitrapper, Review Procedure, Print Report, System Constants and Quit.
  • the system software is instructing the user to con ⁇ nect the Digitrapper to the computer with an interface cable and to place the Digitrapper in a communication mode.
  • data are charged and stored automatically in a patient file on the computer hard disk.
  • the user can print a standard analysis report by using the choice Print Report.
  • Said report can be achieved by the choice Sys ⁇ tem Constants to be described here below.
  • Design Pro ⁇ cedure provides the user with a screen with analysis periods to be selec ⁇ ted in accordance with appendix 2.
  • the procedure can be formed further on the next screen which ap ⁇ pears when pressing the Page Down key.
  • bradygastria and tachygastria and other conditions as well as selecting the software filter and amplifying factors can be ac ⁇ hieved on the screen according to appendix 3.
  • Selecting -Desi n Diary shown in appendix 4 provides the user with the possibility to arrange the study in preselected periods.
  • Selecting Set Environment permits the user to adapt the Path to the patient data file to specify the type of monitor to be used and to specify, if the scanned data are to be used and if a light signal should be on (to indicate to the user, that the connection between the Digitrapper and the computer during charging is not correct).
  • Selecting Set Printer Parameter is shown in appendix 5 and let the user select a printer and configurate the size and the position of the writ ⁇ ten report.
  • Selecting Back to Main Menue carries the user back to the main menue and selecting Quit in the main menue ends the programme.
  • the invention provides essential advantages and new possibilities in comparison with what is known in the art.
  • the invention provides improved diagnostic possibilities, an examination in the home, etc.
  • said signals can thus be recorded in real time for a real time detection of a postsurgical or equivalent start of gas trie activity.
  • said signals are recorded nonin- vasively or invasively and are correlated with an induced activity by means of a gastrointestinal pace maker, a desired pace maker influence then being adjusted on the base of a feedback information in form of said signals in the condition preferably achieved by means of said apparatus.
  • the measuring with a refined technique according to the invention provides the possibility of a noninvasive detection of gastric stops and a phase detection.
  • the data recording device 10 might thus in special applications be stationary or semistationary and not necessarily be portable or ambula- toric.
  • the main application of the invention is however related to portable or ambulatory variations and its weight is preferably less than about 2 kg.
  • the application of the method and the device according to the invention is not limited to the stomach, but other parts of the gastrointestinal part as well as the bladder, etc. can become the object for measurements etc. according to the invention.
  • the patient wall impedance might be recor ⁇ ded this being achieved by recording electric signals related to said wall impedance, said signals providing the basis for a calibration/standardi ⁇ zation of the recorded gastric or corresponding depolarisation signals, preferably of the amplitude.
  • the analysis system is conveninetly adapted to decide by means of a comparison with data for gastric activi ⁇ ty, if it has started and exists to such an extent that nourishment may be administered to the patient
  • the result of a nourishment administration can in a corresponding way be decided under a corresponding or a similar condition.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Urology & Nephrology (AREA)
  • Endocrinology (AREA)
  • Physiology (AREA)
  • Electrotherapy Devices (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

L'invention concerne un procédé principalement conçu pour l'électrogastrographie (EGG) du tractus gastro-intestinal et l'électro-urographie (EUG) de la vessie, qui consiste à mesurer des signaux de dépolarisation rythmiques principalement d'origine gastro-intestinale et/ou vésicale, des électrodes (22) étant placées sur le corps du patient pour détecter lesdits signaux. Le procédé se caractérise en ce que lesdits signaux, de préférence filtrés, sont enregistrés au moyen d'un dispositif d'enregistrement de données (10) et sont manipulés par ce dernier et/ou un ordinateur (15) principalement en direct et/ou en différé, et sont mis en corrélation par rapport à l'état gastro-intestinal, urodynamique ou correspondant du patient. L'invention porte également sur un dispositif permettant de mettre ledit procédé en ÷uvre.
PCT/SE1995/001120 1994-09-30 1995-10-02 Procede et dispositif principalement concu pour l'electrogastrographie et l'electro-urographie Ceased WO1996010358A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU36246/95A AU3624695A (en) 1994-09-30 1995-10-02 Method and device at primarily electrogastrography and electrourography

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9403321A SE9403321D0 (sv) 1994-09-30 1994-09-30 Förfarande och anordning vid fränst elektrogastrografi
SE9403321-4 1994-09-30
SE9403344A SE9403344L (sv) 1994-09-30 1994-10-03 Förfarande och anordning vid främst elektrogastrografi och elektrourografi
SE9403344-6 1994-10-03

Publications (1)

Publication Number Publication Date
WO1996010358A1 true WO1996010358A1 (fr) 1996-04-11

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PCT/SE1995/001120 Ceased WO1996010358A1 (fr) 1994-09-30 1995-10-02 Procede et dispositif principalement concu pour l'electrogastrographie et l'electro-urographie

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Country Link
AU (1) AU3624695A (fr)
SE (1) SE9403344L (fr)
WO (1) WO1996010358A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0965303A3 (fr) * 1998-06-15 2000-09-13 Gram Corporation Electrogastrograph et méthode d'analyse de données électrographiques
US6947792B2 (en) 1997-07-16 2005-09-20 Impulse Dynamics N.V. Smooth muscle controller
US7006871B1 (en) 1997-07-16 2006-02-28 Metacure N.V. Blood glucose level control
EP1182967A4 (fr) * 1999-05-07 2009-03-25 Kenneth L Koch Procede et dispositif permettant d'evaluer des signaux myoelectriques et d'identifier des artefacts
US20130046150A1 (en) * 2010-11-01 2013-02-21 G-Tech Method for diagnosis and treatment of disorders of the gastrointestinal tract, and apparatus for use therewith
US8934975B2 (en) 2010-02-01 2015-01-13 Metacure Limited Gastrointestinal electrical therapy
US8958872B2 (en) 1996-01-08 2015-02-17 Impulse Dynamics, N.V. Electrical muscle controller
US8977353B2 (en) 2004-03-10 2015-03-10 Impulse Dynamics Nv Protein activity modification
US9101765B2 (en) 1999-03-05 2015-08-11 Metacure Limited Non-immediate effects of therapy
US9289618B1 (en) 1996-01-08 2016-03-22 Impulse Dynamics Nv Electrical muscle controller
US9713723B2 (en) 1996-01-11 2017-07-25 Impulse Dynamics Nv Signal delivery through the right ventricular septum
US9931503B2 (en) 2003-03-10 2018-04-03 Impulse Dynamics Nv Protein activity modification
US9943264B2 (en) 2012-10-10 2018-04-17 G-Tech Medical, Inc. Wearable wireless patches containing electrode pair arrays for gastrointestinal electrodiagnostics
US10485444B2 (en) 2014-10-17 2019-11-26 G-Tech Medical, Inc. Systems and methods for processing electromyographic signals of the gastrointestinal tract
US10499829B2 (en) 2010-11-01 2019-12-10 G-Tech Medical, Inc. Wearable wireless patches containing electrode pair arrays for gastrointestinal electrodiagnostics
US10512414B2 (en) 2015-08-29 2019-12-24 G-Tech Medical, Inc. Apparatus and method for detecting gastrointestinal motor activity during post-operative recovery
US11439815B2 (en) 2003-03-10 2022-09-13 Impulse Dynamics Nv Protein activity modification
US11779768B2 (en) 2004-03-10 2023-10-10 Impulse Dynamics Nv Protein activity modification
US11826170B2 (en) 2012-10-10 2023-11-28 G-Tech Medical, Inc. Artificial intelligence models for wireless patch data acquisition for gastrointestinal electrodiagnostics
US12178580B2 (en) 2019-12-23 2024-12-31 Alimetry Limited Electrode patch and connection system

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Publication number Priority date Publication date Assignee Title
GB2210713A (en) * 1987-10-02 1989-06-14 Intelligent Decision Systems S Installation for assisting the diagnosis of cardiovascular and pulmonary pathologies
WO1992006634A1 (fr) * 1990-10-18 1992-04-30 Centrum för Dentalteknik och Biomaterial Dispositif permettant de mesurer l'impedance electrique de materiaux organiques et biologiques
CN1079379A (zh) * 1993-03-04 1993-12-15 中国科学院合肥分院 一种新的胃肠电信号检测处理装置和方法
WO1994001172A1 (fr) * 1992-07-10 1994-01-20 Douglas Donald D Stimulateur intestinal electrique percutane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210713A (en) * 1987-10-02 1989-06-14 Intelligent Decision Systems S Installation for assisting the diagnosis of cardiovascular and pulmonary pathologies
WO1992006634A1 (fr) * 1990-10-18 1992-04-30 Centrum för Dentalteknik och Biomaterial Dispositif permettant de mesurer l'impedance electrique de materiaux organiques et biologiques
WO1994001172A1 (fr) * 1992-07-10 1994-01-20 Douglas Donald D Stimulateur intestinal electrique percutane
CN1079379A (zh) * 1993-03-04 1993-12-15 中国科学院合肥分院 一种新的胃肠电信号检测处理装置和方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE CHINESE PATENT ABSTRACTS IN ENGLISH ON DIALOG, Week 9533, INPADOC, (Vienna, Austria), No. 4049378; & CN,A,1 079 379, (HEFEI DIVISION CHINESE ACADEMY). *

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8958872B2 (en) 1996-01-08 2015-02-17 Impulse Dynamics, N.V. Electrical muscle controller
US9289618B1 (en) 1996-01-08 2016-03-22 Impulse Dynamics Nv Electrical muscle controller
US9186514B2 (en) 1996-01-08 2015-11-17 Impulse Dynamics Nv Electrical muscle controller
US9713723B2 (en) 1996-01-11 2017-07-25 Impulse Dynamics Nv Signal delivery through the right ventricular septum
US7221978B2 (en) 1997-07-16 2007-05-22 Metacure Nv Smooth muscle controller
US6947792B2 (en) 1997-07-16 2005-09-20 Impulse Dynamics N.V. Smooth muscle controller
US7120497B2 (en) 1997-07-16 2006-10-10 Metacure Nv Smooth muscle controller
US9265930B2 (en) 1997-07-16 2016-02-23 Metacure Limited Methods and devices for modifying vascular parameters
US7006871B1 (en) 1997-07-16 2006-02-28 Metacure N.V. Blood glucose level control
EP0965303A3 (fr) * 1998-06-15 2000-09-13 Gram Corporation Electrogastrograph et méthode d'analyse de données électrographiques
US9101765B2 (en) 1999-03-05 2015-08-11 Metacure Limited Non-immediate effects of therapy
EP1182967A4 (fr) * 1999-05-07 2009-03-25 Kenneth L Koch Procede et dispositif permettant d'evaluer des signaux myoelectriques et d'identifier des artefacts
US11439815B2 (en) 2003-03-10 2022-09-13 Impulse Dynamics Nv Protein activity modification
US9931503B2 (en) 2003-03-10 2018-04-03 Impulse Dynamics Nv Protein activity modification
US10352948B2 (en) 2004-03-10 2019-07-16 Impulse Dynamics Nv Protein activity modification
US11779768B2 (en) 2004-03-10 2023-10-10 Impulse Dynamics Nv Protein activity modification
US9440080B2 (en) 2004-03-10 2016-09-13 Impulse Dynamics Nv Protein activity modification
US8977353B2 (en) 2004-03-10 2015-03-10 Impulse Dynamics Nv Protein activity modification
US12268882B2 (en) 2004-12-09 2025-04-08 Impulse Dynamics Nv Beta blocker therapy with electrical administration
US8934975B2 (en) 2010-02-01 2015-01-13 Metacure Limited Gastrointestinal electrical therapy
US10499829B2 (en) 2010-11-01 2019-12-10 G-Tech Medical, Inc. Wearable wireless patches containing electrode pair arrays for gastrointestinal electrodiagnostics
US11432759B2 (en) 2010-11-01 2022-09-06 G-Tech Method for diagnosis and treatment of disorders of the gastrointestinal tract, and apparatus for use therewith
US9474482B2 (en) * 2010-11-01 2016-10-25 G-Tech Medical, Inc. Method for diagnosis and treatment of disorders of the gastrointestinal tract, and apparatus for use therewith
US20130046150A1 (en) * 2010-11-01 2013-02-21 G-Tech Method for diagnosis and treatment of disorders of the gastrointestinal tract, and apparatus for use therewith
US9943264B2 (en) 2012-10-10 2018-04-17 G-Tech Medical, Inc. Wearable wireless patches containing electrode pair arrays for gastrointestinal electrodiagnostics
US11826170B2 (en) 2012-10-10 2023-11-28 G-Tech Medical, Inc. Artificial intelligence models for wireless patch data acquisition for gastrointestinal electrodiagnostics
US10485444B2 (en) 2014-10-17 2019-11-26 G-Tech Medical, Inc. Systems and methods for processing electromyographic signals of the gastrointestinal tract
US11826157B2 (en) 2014-10-17 2023-11-28 G-Tech Medical, Inc. Systems and methods for processing electromyographic signals of the gastrointestinal tract
US10512414B2 (en) 2015-08-29 2019-12-24 G-Tech Medical, Inc. Apparatus and method for detecting gastrointestinal motor activity during post-operative recovery
US12178580B2 (en) 2019-12-23 2024-12-31 Alimetry Limited Electrode patch and connection system
US12245862B2 (en) 2019-12-23 2025-03-11 Alimetry Limited Electrode patch and connection system

Also Published As

Publication number Publication date
AU3624695A (en) 1996-04-26
SE9403344L (sv) 1996-03-31
SE9403344D0 (sv) 1994-10-03

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