WO2006109109A1 - Body impedance measuring device - Google Patents

Body impedance measuring device Download PDF

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Publication number
WO2006109109A1
WO2006109109A1 PCT/IB2005/003115 IB2005003115W WO2006109109A1 WO 2006109109 A1 WO2006109109 A1 WO 2006109109A1 IB 2005003115 W IB2005003115 W IB 2005003115W WO 2006109109 A1 WO2006109109 A1 WO 2006109109A1
Authority
WO
WIPO (PCT)
Prior art keywords
therapy
impedance measuring
measuring device
body impedance
keeping
Prior art date
Application number
PCT/IB2005/003115
Other languages
French (fr)
Inventor
Antonio La Gatta
Original Assignee
Antonio La Gatta
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 Antonio La Gatta filed Critical Antonio La Gatta
Publication of WO2006109109A1 publication Critical patent/WO2006109109A1/en

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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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00022—Sensing or detecting at the treatment site
    • A61B2017/00026—Conductivity or impedance, e.g. of tissue
    • 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
    • A61B2018/00875—Resistance or impedance

Definitions

  • the system called "BODY IMPEDANCE MEASURING DEVICE” is an innovative' equipment devoted to monitor the impedance in different body areas, which works combined to an electric generator for body treatment, and is useful in medical, aesthetic, sports, fitness and veterinary field.
  • the system is endowed of particular characteristics that grant the maximum comfort for the treated subject and the maximum security for the operator in all the work phases.
  • the proposed device is just implemented in radiofrequency devices such as: • Endothermic
  • the human body can be assimilated to an electric bipolar, endowed of resistive, capacitive, inductive effects.
  • Z V/I, where V and I are the complex representation of applied tension and current.
  • Z it's a complex value, which real part Re(Z) will be dependent on the body resistance, meanwhile the imaginary part Im(Z) is in strict dependence with the capacitive and inductive body effects.
  • the measuring is performed, by the procedures that will be specifically i explained next, both for the real part and for the imaginary about the impedance. Practically the Re(Z) (real part of the complex impedance Z) and Im(Z) (imaginary part of the complex Z) reading.
  • the visualisation is effectuated after an elaboration of these values, and can be related to (see picture n. 1):
  • the measuring is performed quantitatively valuing in the absorbed current by the final stage (picture 3).
  • RF GENERATOR is a device that generates electric signals for therapy to which one associates the equipment "body impedance measuring device";
  • the successive block so as to allow: o
  • the real part visualization o
  • the imaginary part visualization o
  • the module visualization o
  • the phase angle visualization o
  • this block allows to put in a desired (logarithmic, exponential, etc%) scale the signal.
  • DATA LOGGER obtains the impedance value at predefined times passed by the signal conditioning block.
  • Memorise it in a memory with suitable dimension and eventually transmit informations to the user interface; video graphic/ printer,
  • VISUALISATOR PRINTER
  • PC various user interfaces to visualize in real time the body impedance value, or to visualize the impedance variation among the time;
  • TREATMENTS EXIT parts in contact with the patient's/user's body (electrodes, handles, etc.);
  • FEEDBACK gives to the Generator RP the instantaneous value (but not necessarily) instantaneous of body impedance. In this way it can be implement into the RP Generator a system to keep the current or the exit tension (or a combination of this) constant.
  • This system can be realised almost in two forms: o Automatic control microprocessor: the system regulates the generator power in an automatic way. The user formulate some initial parameters, then the microprocessor automatically of the power of the regulation, in the regulation power, to keep constant the chosen value ( current, tension or o something else) .
  • o Powered handle control the system behaves in the same way of the previous, moreover the power regulation handle of the RF generator is enlivened by an electric starter in agreement with the variation power.

Abstract

Body impedance measuring device which can determine the impedance value in various body areas, and particularly its variations caused by various factors like electromedical radiofrequency devices in. The aim is to catch an impedance value, to memorize and visualize it by a digital or printing analogical indicator. The Body impedance measuring device allows to improve considerably the efficacy of the treatments, allowing to the operator constantly to monitor the impedance treated tissues state. Moreover the device grants the maximum comfort for the treated subject and the maximum security for the operator in all the work phases.

Description

DESCRIPTION
Description of the industrial invention called "'BODY IMPEDANCE .MEASURING DEVICE" on behalf of TSEM S. P-A., via Alessandro Volta 20/A, 35033 Teolo (Padova).
DESCRIPTION TEXT
The system called "BODY IMPEDANCE MEASURING DEVICE", is an innovative' equipment devoted to monitor the impedance in different body areas, which works combined to an electric generator for body treatment, and is useful in medical, aesthetic, sports, fitness and veterinary field.
The system is endowed of particular characteristics that grant the maximum comfort for the treated subject and the maximum security for the operator in all the work phases.
The reference problem from which we have started to create the "BODY IMPEDANCE MEASURING DEVICE" is the absence in market of valid devices that allows a continuous and precise monitoring of the body impedance during all the phases of the treatment of a patient
by radiofrequency treatments.
The proposed device is just implemented in radiofrequency devices such as: • Endothermic
• Marconi-therapy
• Radar-therapy
• Energetic capacitive/resistive transfer (Tecar-therapy)
• Equipment produced in the Italian patent-keeping EP893140 (TecnoSix) ambit.
The human body can be assimilated to an electric bipolar, endowed of resistive, capacitive, inductive effects. Speaking about body impedance, and its value is given by: Z= V/I, where V and I are the complex representation of applied tension and current. Also Z it's a complex value, which real part Re(Z) will be dependent on the body resistance, meanwhile the imaginary part Im(Z) is in strict dependence with the capacitive and inductive body effects. The measuring is performed, by the procedures that will be specifically i explained next, both for the real part and for the imaginary about the impedance. Practically the Re(Z) (real part of the complex impedance Z) and Im(Z) (imaginary part of the complex Z) reading. The visualisation is effectuated after an elaboration of these values, and can be related to (see picture n. 1):
)
• The real component Re(Z) value
• The imaginary component Im(Z) value
• The module |Z|
• The phase angle 0
• A linear or non-linear combination of all or some of the previous values The measuring is performed by one of the two methods explained below:
1. Volt-Amperometric method
Calculating the relation between (vectorial but not necessarily) tension and current applied by the electrodes use on the patient's body.
2. Absorbed Current method
The measuring is performed quantitatively valuing in the absorbed current by the final stage (picture 3).
In this way we manage to have the real component measure of the complex impedance.
The equipment that realises the "body impedance measuring device" is schematized in the picture 4. A short explication about the various components is given below:
• RF GENERATOR : is a device that generates electric signals for therapy to which one associates the equipment "body impedance measuring device";
• IMPEDENCE MEASURING: device that realises the real impedance value measure, with the Volt- Amperometric method or the absorbed current method;
• CONDITIONING SIGNAL: indispensable block to define in which way the signal have to be transmitted to
the successive block, so as to allow: o The real part visualization o The imaginary part visualization o The module visualization o The phase angle visualization o The linear or non-linear combination visualisation of all these elements;
Moreover this block allows to put in a desired (logarithmic, exponential, etc...) scale the signal.
• DATA LOGGER: obtains the impedance value at predefined times passed by the signal conditioning block. Memorise it in a memory with suitable dimension and eventually transmit informations to the user interface; video graphic/ printer,
• VISUALISATOR, PRINTER, PC: various user interfaces to visualize in real time the body impedance value, or to visualize the impedance variation among the time;
• TREATMENTS EXIT: parts in contact with the patient's/user's body (electrodes, handles, etc.);
• FEEDBACK: gives to the Generator RP the instantaneous value (but not necessarily) instantaneous of body impedance. In this way it can be implement into the RP Generator a system to keep the current or the exit tension (or a combination of this) constant. This system can be realised almost in two forms: o Automatic control microprocessor: the system regulates the generator power in an automatic way. The user formulate some initial parameters, then the microprocessor automatically of the power of the regulation, in the regulation power, to keep constant the chosen value ( current, tension or o something else) . o Powered handle control: the system behaves in the same way of the previous, moreover the power regulation handle of the RF generator is enlivened by an electric starter in agreement with the variation power.

Claims

1) The claimed system, called "BODY IMPEDANCE MEASURING DEVICE" combined to therapy equipments for electric current (Endothermic; Marconi-therapy; Radar- therapy; Energetic capacitive /resistive Transfer (Tecar- therapy); Equipment produced in the patent-keeping EP893140 (Tecnosix) ambit can execute the body impedance measuring with the Volt-Amperonometric method (very precise method);
2) The claimed system called "BODY IMPEDANCE MEASURING DEVICE" joined to therapy equipments which use electric current (Endothermic; Marconi-therapy; Radar-therapy; Energetic capacitive/resistive Transfer (Tecar- therapy); Equipment produced in the patent-keeping EP893140 (Tecnosix) ambit can execute the body impedance measuring with the absorbed current method less precise than the Volt-Amperonometric one, but simpler than this). This system is reliable by inserting a shunt resistance between the final stadium and the mass, or between the positive reference and the final stadium;
3) The "BODY IMPEDANCE MEASURING DEVICE" combined to the equipments which use electric currents (Endothermic; Marconi-therapy, Radar-therapy, electric capacitive/resistive transfer (Tecar-therapy); Equipment produced in the patent-keeping EP893140 (Tecnosix) ambit is endowed of a conditioning signal circuit, which allows to put this in a desired stair , for example, but ma not necessarily logarithmic; 4) The BODY IMPEDANCE MEASURING DEVICE" combined to the equipments which use electric currents (Endothermic; Marconi-therapy, Radar-therapy, electric capacitive/resistive transfer (Tecar-therapy); Equipment produced in the Italian patent-keeping EP893140 (Tecnosix) ambit is endowed of a Data Logger, to memorise the acquired signals during the time;
5) The "BODY IMPEDANCE MEASURING DEVICE" combined to the equipments which use electric currents (Endothermic; Marconi-therapy, Radar-therapy, electric capacitive/resistive transfer (Tecar-therapy); Equipment produced in the Italian patent-keeping EP893140 (Tecnosix) ambit is endowed of a feedback to transmit to the RF generator Of the (instant or past) read impedance value;
6) The "BODY IMPEDANCE MEASURING DEVICE" combined to the equipments which use electric currents (Endothermic; Marconi-therapy, Radar-therapy, electric capacitive/resistive transfer (Tecar-therapy); Equipment produced in the Italian patent-keeping EP893140 (Tecnosix) ambit thanks to the possibility to use the supplied by a feedback, allows to realise a powered handle in the RF equipment. In particular the RF generator can vary the power (automatically rotating the handle) keeping constant one or more parameters, such as the absorbed current, the exit tension or a linear combination or none of these.
PCT/IB2005/003115 2005-04-12 2005-10-06 Body impedance measuring device WO2006109109A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD2005000023 2005-04-12
IT000023U ITPD20050023U1 (en) 2005-04-12 2005-04-12 BODY IMPEDENZIMETER

Publications (1)

Publication Number Publication Date
WO2006109109A1 true WO2006109109A1 (en) 2006-10-19

Family

ID=40164704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/003115 WO2006109109A1 (en) 2005-04-12 2005-10-06 Body impedance measuring device

Country Status (2)

Country Link
IT (1) ITPD20050023U1 (en)
WO (1) WO2006109109A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014223487A (en) * 2011-05-03 2014-12-04 エルベ エレクトロメディジン ゲーエムベーハーＥｒｂｅ Ｅｌｅｋｔｒｏｍｅｄｉｚｉｎ ＧｍｂＨ Device for tissue fusion or coagulation by tissue resistance-dependent voltage-controlled electrical action
US10350423B2 (en) 2016-02-04 2019-07-16 Cardiac Pacemakers, Inc. Delivery system with force sensor for leadless cardiac device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658819A (en) * 1983-09-13 1987-04-21 Valleylab, Inc. Electrosurgical generator
EP0893140A2 (en) * 1997-07-24 1999-01-27 Indiba, S.A. Hyperthermia device
US6080149A (en) * 1998-01-09 2000-06-27 Radiotherapeutics, Corporation Method and apparatus for monitoring solid tissue heating
US6423057B1 (en) * 1999-01-25 2002-07-23 The Arizona Board Of Regents On Behalf Of The University Of Arizona Method and apparatus for monitoring and controlling tissue temperature and lesion formation in radio-frequency ablation procedures

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658819A (en) * 1983-09-13 1987-04-21 Valleylab, Inc. Electrosurgical generator
EP0893140A2 (en) * 1997-07-24 1999-01-27 Indiba, S.A. Hyperthermia device
US6080149A (en) * 1998-01-09 2000-06-27 Radiotherapeutics, Corporation Method and apparatus for monitoring solid tissue heating
US6423057B1 (en) * 1999-01-25 2002-07-23 The Arizona Board Of Regents On Behalf Of The University Of Arizona Method and apparatus for monitoring and controlling tissue temperature and lesion formation in radio-frequency ablation procedures

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014223487A (en) * 2011-05-03 2014-12-04 エルベ エレクトロメディジン ゲーエムベーハーＥｒｂｅ Ｅｌｅｋｔｒｏｍｅｄｉｚｉｎ ＧｍｂＨ Device for tissue fusion or coagulation by tissue resistance-dependent voltage-controlled electrical action
US10350423B2 (en) 2016-02-04 2019-07-16 Cardiac Pacemakers, Inc. Delivery system with force sensor for leadless cardiac device

Also Published As

Publication number Publication date
ITPD20050023U1 (en) 2006-10-13

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