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GB2404255A - Intracavitary impedance measuring probe - Google Patents

Intracavitary impedance measuring probe Download PDF

Info

Publication number
GB2404255A
GB2404255A GB0425884A GB0425884A GB2404255A GB 2404255 A GB2404255 A GB 2404255A GB 0425884 A GB0425884 A GB 0425884A GB 0425884 A GB0425884 A GB 0425884A GB 2404255 A GB2404255 A GB 2404255A
Authority
GB
United Kingdom
Prior art keywords
distance
impedance
intracavitary
measuring probe
impedance measuring
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
Application number
GB0425884A
Other versions
GB2404255B (en
GB0425884D0 (en
Inventor
Donald Fulton Alexa Maclachlan
Peter Mcgeehin
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.)
GAELTEC Ltd
Original Assignee
GAELTEC 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 GAELTEC Ltd filed Critical GAELTEC Ltd
Publication of GB0425884D0 publication Critical patent/GB0425884D0/en
Publication of GB2404255A publication Critical patent/GB2404255A/en
Application granted granted Critical
Publication of GB2404255B publication Critical patent/GB2404255B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0538—Measuring electrical impedance or conductance of a portion of the body invasively, e.g. using a catheter
    • 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
    • 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
    • A61B5/4222—Evaluating particular parts, e.g. particular organs
    • A61B5/4233—Evaluating particular parts, e.g. particular organs oesophagus

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Physiology (AREA)
  • Endocrinology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

A device for measuring conductance within a lumen containing conducting medium and having an average diameter, the device comprising: a body portion positionable within the lumen and having a body diameter; drive means: a sensor driven by the drive means comprising: means for applying a first electrical current across a first distance substantially equal to the body diameter; means for applying a second electrical current across a second distance, the second distance being greater than the first distance; sensing means for sensing the voltage across both the first and the second distance; means for measuring the impedance across both the first and second distances, and means for comparing the impedance across the first distance with the impedance across the second distance.

Description

GB 2404255 A continuation (74) Agent and/or Address for Service: Eric
Potter Clarkson Park View House, 58 The Ropewalk, NOTTINGHAM, NG1 5DD, United Kingdom
GB0425884A 2002-05-02 2003-05-02 Intracavitary impedance measuring probe Expired - Fee Related GB2404255B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0210073.3A GB0210073D0 (en) 2002-05-02 2002-05-02 Improved apparatus and method for investigating the hollow viscera
PCT/GB2003/001929 WO2003092495A1 (en) 2002-05-02 2003-05-02 Intracavitary impedance measuring probe

Publications (3)

Publication Number Publication Date
GB0425884D0 GB0425884D0 (en) 2004-12-29
GB2404255A true GB2404255A (en) 2005-01-26
GB2404255B GB2404255B (en) 2006-02-15

Family

ID=9935953

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0210073.3A Ceased GB0210073D0 (en) 2002-05-02 2002-05-02 Improved apparatus and method for investigating the hollow viscera
GB0425884A Expired - Fee Related GB2404255B (en) 2002-05-02 2003-05-02 Intracavitary impedance measuring probe

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0210073.3A Ceased GB0210073D0 (en) 2002-05-02 2002-05-02 Improved apparatus and method for investigating the hollow viscera

Country Status (3)

Country Link
AU (1) AU2003227906A1 (en)
GB (2) GB0210073D0 (en)
WO (1) WO2003092495A1 (en)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9462960B2 (en) 2003-02-21 2016-10-11 3Dt Holdings, Llc Impedance devices and methods of using the same to obtain luminal organ measurements
US10568546B2 (en) 2003-02-21 2020-02-25 3Dt Holdings, Llc Devices and methods for sizing valve apertures and luminal organs
US7818053B2 (en) 2003-02-21 2010-10-19 Dtherapeutics, Llc Devices, systems and methods for plaque type determination
US8886301B2 (en) 2003-02-21 2014-11-11 3Dt Holdings, Llc Impedance devices for obtaining conductance measurements within luminal organs
US8406867B2 (en) 2003-02-21 2013-03-26 Dtherapeutics, Llc Balloon sizing of valve annulus for percutaneous valves
US8465452B2 (en) 2003-02-21 2013-06-18 3Dt Holdings, Llc Devices, systems, and methods for removing stenotic lesions from vessels
NZ579430A (en) * 2003-02-21 2011-03-31 Electro Cat Llc System and method for measuring cross-sectional areas and pressure gradients in luminal organs
US8185194B2 (en) 2003-02-21 2012-05-22 Dtherapeutics, Llc Systems and methods for determining phasic cardiac cycle measurements
US9603545B2 (en) 2003-02-21 2017-03-28 3Dt Holdings, Llc Devices, systems, and methods for removing targeted lesions from vessels
US10413211B2 (en) 2003-02-21 2019-09-17 3Dt Holdings, Llc Systems, devices, and methods for mapping organ profiles
US8078274B2 (en) 2003-02-21 2011-12-13 Dtherapeutics, Llc Device, system and method for measuring cross-sectional areas in luminal organs
US10172538B2 (en) 2003-02-21 2019-01-08 3Dt Holdings, Llc Body lumen junction localization
US8388604B2 (en) 2003-02-21 2013-03-05 Dtherapeutics, Llc Devices, systems, and methods for removing contrast from luminal organs
US20090062684A1 (en) * 2005-03-31 2009-03-05 Globalreach Holding Aps Apparatus and method for a global model of hollow internal organs including the determination of cross-sectional areas and volume in internal hollow organs and wall properties
US8602987B2 (en) 2005-10-18 2013-12-10 Pneumoflex Systems, Llc Techniques for evaluating stress urinary incontinence (SUI) using involuntary reflex cough test
US8597184B2 (en) 2005-10-18 2013-12-03 Pneumoflex Systems, Llc Techniques for evaluating urinary stress incontinence and use of involuntary reflex cough as a medical diagnostic tool
US9028406B2 (en) 2005-10-18 2015-05-12 Pneumoflex Systems, Llc Oral-esophageal-gastric device to diagnose reflux and/or emesis
EP1937143B1 (en) 2005-10-18 2016-11-30 Pneumoflex Systems, LLC Apparatus for evaluating urinary stress incontinence
US9011328B2 (en) 2005-10-18 2015-04-21 Pneumoflex Systems, Llc Oral-esophageal-gastric device with esophageal cuff to reduce gastric reflux and/or emesis
EP1956970A4 (en) 2005-12-09 2010-01-13 Pneumoflex Systems Llc Involuntary contraction induced pressure as a medical diagnostic tool
US8597183B2 (en) 2005-12-09 2013-12-03 Pneumoflex Systems, Llc Involuntary contraction induced pressure as a medical diagnostic tool using involuntary reflex cough test
US8706209B2 (en) 2010-02-05 2014-04-22 3Dt Holdings, Llc Devices, systems, and methods for measuring parallel tissue conductance, luminal cross-sectional areas, fluid velocity, and/or determining plaque vulnerability using temperature
US11373780B2 (en) 2011-10-06 2022-06-28 3Dt Holdings, Llc Methods to generate elongated wires having a metallic substrate thereon and devices comprising the same
US9734938B2 (en) 2011-10-06 2017-08-15 3Dt Holdings, Llc Devices and systems for obtaining conductance data and methods of manufacturing and using the same
US9066672B2 (en) 2011-10-27 2015-06-30 3Dt Holdings, Llc Single injection methods for obtaining conductance measurements within luminal organs using impedance devices
US11759268B2 (en) 2012-04-05 2023-09-19 C. R. Bard, Inc. Apparatus and methods relating to intravascular positioning of distal end of catheter
AU2013243252B2 (en) 2012-04-05 2017-04-06 Bard Access Systems, Inc. Devices and systems for navigation and positioning a central venous catheter within a patient
US10159531B2 (en) 2012-04-05 2018-12-25 C. R. Bard, Inc. Apparatus and methods relating to intravascular positioning of distal end of catheter
US8700133B2 (en) 2012-06-18 2014-04-15 Smart Iv Llc Apparatus and method for monitoring catheter insertion
US9597482B2 (en) 2012-06-18 2017-03-21 Smart Iv Llc Apparatus and method for monitoring catheter insertion
US9675257B2 (en) 2013-03-15 2017-06-13 3Dt Holdings, Llc Impedance devices and methods to use the same to obtain luminal organ measurements
EP3256043B1 (en) 2015-02-12 2020-03-18 Foundry Innovation & Research 1, Ltd. Implantable devices for heart failure monitoring
WO2017024051A1 (en) 2015-08-03 2017-02-09 Foundry Innovation & Research 1, Ltd. Devices and methods for measurement of vena cava dimensions, pressure, and oxygen saturation
US11701018B2 (en) 2016-08-11 2023-07-18 Foundry Innovation & Research 1, Ltd. Wireless resonant circuit and variable inductance vascular monitoring implants and anchoring structures therefore
WO2018102435A1 (en) 2016-11-29 2018-06-07 Foundry Innovation & Research 1, Ltd. Wireless resonant circuit and variable inductance vascular implants for monitoring patient vasculature and fluid status and systems and methods employing same
US11206992B2 (en) 2016-08-11 2021-12-28 Foundry Innovation & Research 1, Ltd. Wireless resonant circuit and variable inductance vascular monitoring implants and anchoring structures therefore
EP3496606A1 (en) 2016-08-11 2019-06-19 Foundry Innovation & Research 1, Ltd. Systems and methods for patient fluid management
US11944495B2 (en) 2017-05-31 2024-04-02 Foundry Innovation & Research 1, Ltd. Implantable ultrasonic vascular sensor
WO2018220146A1 (en) 2017-05-31 2018-12-06 Foundry Innovation & Research 1, Ltd. Implantable sensors for vascular monitoring

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587975A (en) * 1984-07-02 1986-05-13 Cardiac Pacemakers, Inc. Dimension sensitive angioplasty catheter
US5833625A (en) * 1993-10-21 1998-11-10 Synectics Medical Ab Ambulatory reflux monitoring system
RU2154409C1 (en) * 1999-02-15 2000-08-20 Московский городской научно-исследовательский институт скорой помощи им. Н.В. Склифосовского Method and probe for examining motor function of the esophagus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587975A (en) * 1984-07-02 1986-05-13 Cardiac Pacemakers, Inc. Dimension sensitive angioplasty catheter
US5833625A (en) * 1993-10-21 1998-11-10 Synectics Medical Ab Ambulatory reflux monitoring system
RU2154409C1 (en) * 1999-02-15 2000-08-20 Московский городской научно-исследовательский институт скорой помощи им. Н.В. Склифосовского Method and probe for examining motor function of the esophagus

Also Published As

Publication number Publication date
WO2003092495A1 (en) 2003-11-13
GB2404255B (en) 2006-02-15
GB0210073D0 (en) 2002-06-12
GB0425884D0 (en) 2004-12-29
AU2003227906A1 (en) 2003-11-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070502

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20110428 AND 20110504