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WO1998034679A1 - Reusable neutral electrode for electrosurgery - Google Patents

Reusable neutral electrode for electrosurgery Download PDF

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Publication number
WO1998034679A1
WO1998034679A1 PCT/ES1998/000028 ES9800028W WO9834679A1 WO 1998034679 A1 WO1998034679 A1 WO 1998034679A1 ES 9800028 W ES9800028 W ES 9800028W WO 9834679 A1 WO9834679 A1 WO 9834679A1
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WO
WIPO (PCT)
Prior art keywords
electrode
neutral electrode
reusable
neutral
electrosurgery
Prior art date
Application number
PCT/ES1998/000028
Other languages
Spanish (es)
French (fr)
Inventor
Carlos Gonzalez Garcia
Original Assignee
Carlos Gonzalez Garcia
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 Carlos Gonzalez Garcia filed Critical Carlos Gonzalez Garcia
Publication of WO1998034679A1 publication Critical patent/WO1998034679A1/en

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Classifications

    • 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
    • A61B18/08—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by means of electrically-heated probes
    • 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
    • A61B18/16—Indifferent or passive electrodes for grounding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/04—Electrodes
    • A61N1/06—Electrodes for high-frequency therapy

Definitions

  • the present invention relates to a new concept of the element of an electrosurgery known as dispersive electrode, neutral electrode, or return electrode, used in electrosurgery.
  • An electrosurgical device is a surgical instrument consisting of three elements reflected in Figure 1: a high frequency generator -1-, an active electrode -2- and a neutral or dispersive electrode -3-.
  • a problem presented by current electrodes is that, when they are designed for single use, they are economically expensive to manufacture and use.
  • a second problem is the high volume and toxicity of waste generated due to the components used in its manufacture, mainly based on acrylic and thermoplastic products, making it difficult to eliminate it by generating a high level of dioxin emission in its incineration.
  • a third problem is the skin trauma caused by the withdrawal of the return electrode after surgery due to the high adhesive capacity of the adhesive element.
  • a fourth problem is, despite the compatibility of existing systems, that a neutral electrode will only be fully operational with its specific high frequency generator model.
  • the object of the present invention is to offer the possibility of having a device that is economically less expensive, that is adequate to the current safety requirements for both the patient and the professional, that is functionally more effective in response to a wide range of Surgical needs, that is of simple application without increasing the conventional scheme of work of the personnel of the hospital center and that its use generates a minimum volume of non-polluting residues thanks to the easy elimination of the integral components of the disposable element.
  • Second figure.- Shows in detail the neutral electrode object of the present invention.
  • Third figure.- It illustrates some of the different forms that the neutral electrode object of the present invention can take.
  • the neutral electrode object of this invention patent whose scheme is presented in figure no. 2 allows to reuse the elements that do not have direct contact with the patient, that is, the connection cable to the generator -4- and the electrode itself -6-, which will be integrated and protected by a flexible backup support -5- that will avoid any accidental high-frequency referral to hospital staff and effective protection against fluids occasionally spilled on the contact electrode -6-, which may be single -8- or double -6-, depending on the generator used and the User body structure, allowing to reuse this element
  • the patient contact element is formed by a disposable sheet of conductive wet gel -7- with adhesive properties on both sides.
  • the new neutral electrode object of the present invention has a reusable element independent of the disposable conductive contact gel with the patient.
  • the reusable element is provided with a connection cable with the high frequency generator that has an encapsulated connection system designed in such a way that minimizes the fatigue produced in the cable as consequence of multiple reconnections to the generator.
  • the cable -4- is made of a flexible material resistant to torsion and tensile and insulating, with a length between 3 and 5 meters whose conductive cores will have a suitable section according to the maximum power in high frequency generators (normally 300 watts) and with a resistance, in any case, less than 1 ohm.
  • connection of the cable cores with the electrode -6- integrated in the backing material -5- is carried out by means of joining clips or any type of welding that does not affect the total resistance of the assembly, the connection of the connection cable being with the metal electrode coated and integrated, for its isolation, in the backup material as shown in figure 3. Its dimensions will be determined by the patient's body surface and the generator output power used in the intervention.
  • the backing material is composed of a support made of a flexible and waterproof material such as silicone. It may take different forms that will condition the format of the conductive gel, some of which are schematically illustrated in Figure num. 3 designated with the letters a), b), c) and d), the preferred forms being a) and b). Its fundamental function is to act as carrier support of the contact or metallic contacts arranged in sheets that configure the dispersion zone -6-.
  • the fundamental element is the disposable conductive gel, which is in contact with the patient's tissue and the support element described above, whose purpose is to transfer to the generator, by fixing the back support of the gel, the high frequency induced by the electrode active. Its dimensions will match those of the back support, which will be sized according to the patient's body surface. It is configured as a sheet of an approximate thickness of one to three millimeters with a jelly-like consistency and composed of a water base of at least 38%, and metallic particles in suspension predominantly, among others, magnesium and, to a lesser extent, silicon , zinc and aluminum, which increase the conductivity of the base and significantly reduce the contact impedance of the electrode.
  • This composition makes it possible to avoid unwanted separations between the disposable gel sheet or contact area and the skin resting below effectively supporting the usual working conditions in terms of adhesion, surface formability and fluid tolerance, minimizing the risk of electrosurgical burns.
  • the use is especially suitable for high frequency generators that have the contact quality control system, totally eliminating the risk of electrosurgical burns.
  • the disposable gel provides bacterial protection on the applied surface.
  • the reusable element is long lasting and low maintenance because it does not require special storage conditions; It is easy to clean after use because it lacks pronounced angles and cavities, even supporting the sterilization commonly used in operating rooms.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Otolaryngology (AREA)
  • Plasma & Fusion (AREA)
  • Radiology & Medical Imaging (AREA)
  • Electrotherapy Devices (AREA)
  • Surgical Instruments (AREA)

Abstract

Electric bistoury neutral electrode which can be reused with an independent disposable conductor gel formed by a sheet of adhesive conductor gel which optimizes the contact with the patient skin and which adheres to a flexible and reusable back material integrating the return electrode and the connexion cable to the generator. Said neutral electrode enhances the safety for the patient and generates a minor amount of residues. Application to surgical operations carried out with high frequency generators.

Description

ELECTRODO NEUTRO REUTILIZABLE PARA ELECTROCIRUGIA NEUTRAL REUSABLE ELECTRODE FOR ELECTROCIRUGIA
DESCRIPCIÓNDESCRIPTION
La presente invención se refiere a un nuevo concepto del elemento de un electrobisturi conocido como electrodo dispersivo, electrodo neutro, o electrodo de retorno, empleado en electrocirugia.The present invention relates to a new concept of the element of an electrosurgery known as dispersive electrode, neutral electrode, or return electrode, used in electrosurgery.
Un electrobisturi es un instrumento quirúrgico que consta de tres elementos reflejados en la figura núm 1: un generador de alta frecuencia -1-, un electrodo activo -2- y un electrodo neutro o dispersivo -3-.An electrosurgical device is a surgical instrument consisting of three elements reflected in Figure 1: a high frequency generator -1-, an active electrode -2- and a neutral or dispersive electrode -3-.
El análisis teórico y experimental ha demostrado que el contacto deficiente del electrodo neutro con la piel del paciente origina un aumento de la temperatura del tejido cutáneo, provocando las denominadas quemaduras electroquirúrgicas en el paciente a la vez que se producen deficiencias en el funcionamiento del equipo electromédico . Además, las actuales exigencias en materia de asepsia y seguridad hospitalaria imponen la necesidad de emplear productos fungibles.Theoretical and experimental analysis has shown that poor contact of the neutral electrode with the patient's skin causes an increase in skin tissue temperature, causing so-called electrosurgical burns in the patient while causing deficiencies in the operation of electromedical equipment. . In addition, current requirements regarding aseptic and hospital safety impose the need to use fungible products.
Hasta ahora, los electrodos neutros actuales más avanzados estaban diseñados como un accesorio compacto del generador de alta frecuencia, integrado por el cable de conexión al generador, el electrodo conductor propiamente dicho y el material adhesivo de fijación al paciente.Until now, the most advanced current neutral electrodes were designed as a compact accessory of the high frequency generator, integrated by the generator connection cable, the conductive electrode itself and the patient fixing adhesive material.
Un problema que presentan los electrodos actuales es que, al ser concebidos para un solo uso, son económicamente costosos en su fabricación y utilización. Un segundo problema es el alto volumen y toxicidad de residuos que generan debido a los componentes empleados en su fabricación, fundamentalmente a base de productos acrilicos y termoplásticos, dificultando su eliminación por generar un alto nivel de emisión de dioxinas en su incineración.A problem presented by current electrodes is that, when they are designed for single use, they are economically expensive to manufacture and use. A second problem is the high volume and toxicity of waste generated due to the components used in its manufacture, mainly based on acrylic and thermoplastic products, making it difficult to eliminate it by generating a high level of dioxin emission in its incineration.
HOJA DE SUSTITUCIÓN (REGLA 26) Un tercer problema son los traumatismos cutáneos que provoca la retirada del electrodo de retorno tras la intervención quirúrgica por la alta capacidad adherente del elemento adhesivo. Un cuarto problema es, a pesar de la compatibilidad de sistemas existentes, que un electrodo neutro solamente será plenamente operativo con su modelo concreto de generador de alta frecuencia.SUBSTITUTE SHEET (RULE 26) A third problem is the skin trauma caused by the withdrawal of the return electrode after surgery due to the high adhesive capacity of the adhesive element. A fourth problem is, despite the compatibility of existing systems, that a neutral electrode will only be fully operational with its specific high frequency generator model.
El crecimiento en el volumen de intervenciones quirúrgicas y las exigencias de seguridad han provocado el empleo masivo de electrodos neutros desechables.The growth in the volume of surgical interventions and safety requirements have led to the massive use of disposable neutral electrodes.
El objeto de la presente invención es ofrecer la posibilidad de disponer de un dispositivo que sea económicamente menos oneroso, que sea adecuado a los requisitos actuales de seguridad tanto para el paciente como para el profesional, que sea funcionalmente más efectivo respondiendo a una amplia gama de necesidades quirúrgicas, que sea de sencilla aplicación sin incrementar el esquema convencional de trabajo del personal del centro hospitalario y que su utilización genere un minimo volumen de residuos no contaminantes gracias a la fácil eliminación de los componentes integrantes del elemento desechable.The object of the present invention is to offer the possibility of having a device that is economically less expensive, that is adequate to the current safety requirements for both the patient and the professional, that is functionally more effective in response to a wide range of Surgical needs, that is of simple application without increasing the conventional scheme of work of the personnel of the hospital center and that its use generates a minimum volume of non-polluting residues thanks to the easy elimination of the integral components of the disposable element.
Todo esto supondrá una simplificación de uso en el sistema sanitario, siendo válido para la totalidad de los generadores de alta frecuencia del mercado, lo que, en definitiva, supondrá un incremento de productividad y calidad de servicio para el usuario.All this will mean a simplification of use in the sanitary system, being valid for all of the high frequency generators in the market, which, in short, will mean an increase in productivity and quality of service for the user.
Para la debida comprensión del objeto de esta invención, se adjunta a la presente memoria descriptiva dos hojas de planos en la que, a titulo de ejemplo, se representan todas y cada una de las partes que lo forman.For the proper understanding of the object of this invention, two sheets of drawings are attached to the present specification in which, by way of example, each and every one of the parts that form it is represented.
En las citadas hojas de planos queda representado: Figura primera.- Muestra el esquema de trabajo de un electrodo neutro.In the mentioned sheets of plans it is represented: First figure.- Shows the working scheme of a neutral electrode.
Figura segunda.- Muestra de forma desglosada el electrodo neutro objeto de la presente invención. Figura tercera.- Ilustra alguna de las diferentes formas que puede adoptar el electrodo neutro objeto de la presente invención.Second figure.- Shows in detail the neutral electrode object of the present invention. Third figure.- It illustrates some of the different forms that the neutral electrode object of the present invention can take.
En las figuras quedan referenciadas las siguientes partes principales, más las ya referenciadas anteriormente:The following main parts are referenced in the figures, plus those already referenced above:
El electrodo neutro objeto de esta patente de invención, cuyo esquema se presenta en la figura núm. 2 permite reutilizar los elementos que no tienen contacto directo con el paciente, es decir, el cable de conexión al generador -4- y el electrodo propiamente dicho -6-, el cual estará integrado y protegido por un soporte de respaldo flexible -5- que evitará cualquier derivación accidental de alta frecuencia al personal hospitalario y una eficaz protección frente a fluidos derramados ocasionalmente sobre el electrodo de contacto -6-, el cual podrá ser único -8- o doble -6-, dependiendo del generador empleado y de la estructura corporal del usuario, permitiendo poder reutilizar este elemento.The neutral electrode object of this invention patent, whose scheme is presented in figure no. 2 allows to reuse the elements that do not have direct contact with the patient, that is, the connection cable to the generator -4- and the electrode itself -6-, which will be integrated and protected by a flexible backup support -5- that will avoid any accidental high-frequency referral to hospital staff and effective protection against fluids occasionally spilled on the contact electrode -6-, which may be single -8- or double -6-, depending on the generator used and the User body structure, allowing to reuse this element
El elemento de contacto con el paciente lo conforma una lámina desechable de gel húmedo conductor -7- con propiedades adhesivas por ambas caras .The patient contact element is formed by a disposable sheet of conductive wet gel -7- with adhesive properties on both sides.
En una realización preferida, el nuevo electrodo neutro objeto de la presente invención presenta un elemento reutilizable independiente del gel conductor desechable de contacto con el paciente.In a preferred embodiment, the new neutral electrode object of the present invention has a reusable element independent of the disposable conductive contact gel with the patient.
El elemento reutilizable está provisto de un cable de conexión con el generador de alta frecuencia que dispone de un sistema de conexión encapsulado diseñado de forma tal que minimiza la fatiga producida en el cable como consecuencia de múltiples reconexiones al generador. El cable -4- está fabricado de un material flexible resistente a la torsión y a la tracción y aislante, de una longitud comprendida entre 3 y 5 metros cuyos núcleos conductores tendrán una sección adecuada de acuerdo a la potencia máxima en generadores de alta frecuencia (normalmente 300 watios) y con una resistencia, en cualquier caso, inferior a 1 ohmio. La conexión de los núcleos del cable con el electrodo -6- integrado en el material de respaldo -5- se realiza mediante grapas de unión o cualquier tipo de soldadura que no afecte a la resistencia total del conjunto, estando la unión del cable de conexión con el electrodo metálico recubierta e integrada, para su aislamiento, en el material de respaldo según se aprecia en la figura 3. Sus dimensiones estarán determinadas por la superficie corporal del paciente y la potencia de salida del generador empleada en la intervención. El material de respaldo está compuesto por un soporte fabricado con un material flexible e impermeable tal como la silicona. Podra adoptar diferentes formas que condicionaran el formato del gel conductor, algunas de las cuales se ilustran esquemáticamente en la figura num. 3 designadas con las letras a), b) , c) y d) , siendo las formas preferidas la a) y la b) . Su función fundamental es actuar como portador soporte del contacto o contactos metálicos dispuestos en láminas que configuran la zona de dispersión -6-.The reusable element is provided with a connection cable with the high frequency generator that has an encapsulated connection system designed in such a way that minimizes the fatigue produced in the cable as consequence of multiple reconnections to the generator. The cable -4- is made of a flexible material resistant to torsion and tensile and insulating, with a length between 3 and 5 meters whose conductive cores will have a suitable section according to the maximum power in high frequency generators (normally 300 watts) and with a resistance, in any case, less than 1 ohm. The connection of the cable cores with the electrode -6- integrated in the backing material -5- is carried out by means of joining clips or any type of welding that does not affect the total resistance of the assembly, the connection of the connection cable being with the metal electrode coated and integrated, for its isolation, in the backup material as shown in figure 3. Its dimensions will be determined by the patient's body surface and the generator output power used in the intervention. The backing material is composed of a support made of a flexible and waterproof material such as silicone. It may take different forms that will condition the format of the conductive gel, some of which are schematically illustrated in Figure num. 3 designated with the letters a), b), c) and d), the preferred forms being a) and b). Its fundamental function is to act as carrier support of the contact or metallic contacts arranged in sheets that configure the dispersion zone -6-.
El elemento fundamental es el gel conductor desechable, el cual esta en contacto con el tejido del paciente y el elemento soporte anteriormente descrito, cuya finalidad es transferir al generador, mediante la fijación del soporte de respaldo del gel, la alta frecuencia inducida por el electrodo activo. Sus dimensiones coincidirán con las del soporte de respaldo, las cuales estarán dimensionadas de acuerdo a la superficie corporal del paciente. Está configurado como una lámina de un grosor aproximado de uno a tres milímetros con una consistencia gelatinosa y compuesto por una base al agua al menos en un 38 %, y partículas metálicas en suspensión predominando, entre otros, el magnesio y en menor medida, silicio, zinc y aluminio, los cuales incrementan la conductividad de la base y reducen significativamente la impedancia de contacto del electrodo.The fundamental element is the disposable conductive gel, which is in contact with the patient's tissue and the support element described above, whose purpose is to transfer to the generator, by fixing the back support of the gel, the high frequency induced by the electrode active. Its dimensions will match those of the back support, which will be sized according to the patient's body surface. It is configured as a sheet of an approximate thickness of one to three millimeters with a jelly-like consistency and composed of a water base of at least 38%, and metallic particles in suspension predominantly, among others, magnesium and, to a lesser extent, silicon , zinc and aluminum, which increase the conductivity of the base and significantly reduce the contact impedance of the electrode.
Como consecuencia de su concepción, presenta, entre otras, las siguientes ventajas.As a consequence of its conception, it presents, among others, the following advantages.
Esta composición permite evitar separaciones no deseadas entre la lámina de gel desechable o área de contacto y la piel que descansa debajo soportando eficazmente las condiciones habituales de trabajo en lo que se refiere a adherencia, conformabilidad a superficies y tolerancia de fluidos, minimizando el riesgo de quemaduras electroquirúrgicas . La utilización es especialmente adecuada para generadores de alta frecuencia que dispongan del sistema de control de calidad de contacto, eliminando totalmente el riesgo de quemaduras electroquirúrgicas.This composition makes it possible to avoid unwanted separations between the disposable gel sheet or contact area and the skin resting below effectively supporting the usual working conditions in terms of adhesion, surface formability and fluid tolerance, minimizing the risk of electrosurgical burns. The use is especially suitable for high frequency generators that have the contact quality control system, totally eliminating the risk of electrosurgical burns.
Evita los traumatismos cutáneos durante su aplicación debido a su bajo Índice de irritabilidad sobre la piel, asi como los que se producen en la retirada tras la intervención ya que, una vez liberado el elemento reutilizable del paciente, es posible eliminar el gel desechable posteriormente con un sencillo lavado con agua. La fabricación industrial es sencilla y económicamente rentable, dado el bajo coste de las materias primas utilizadas.Avoid skin trauma during application due to its low index of irritability on the skin, as well as those that occur in the withdrawal after the intervention since, once the reusable element of the patient is released, it is possible to remove the disposable gel later with A simple wash with water. Industrial manufacturing is simple and economically profitable, given the low cost of raw materials used.
Permite optimizar los recursos económicos del centro, sin sacrificar la seguridad ni la higiene, al ser reutilizables las partes que no entran en contacto con la piel del paciente.It allows to optimize the economic resources of the center, without sacrificing safety or hygiene, being Reusable parts that do not come in contact with the patient's skin.
Es de aplicación rápida por el personal sanitario.It is quickly applied by health personnel.
Aumenta la seguridad del paciente y del personal hospitalario al evitar derivaciones de corriente.Increases the safety of the patient and hospital staff by avoiding power shunts.
El gel desechable proporciona una protección bacteriana sobre la superficie aplicada.The disposable gel provides bacterial protection on the applied surface.
El elemento reutilizable es de larga duración y de bajo mantenimiento al no precisar condiciones especiales de conservación; es de sencilla limpieza tras su utilización al carecer de ángulos pronunciados y cavidades, soportando incluso la esterilización de uso habitual en los quirófanos.The reusable element is long lasting and low maintenance because it does not require special storage conditions; It is easy to clean after use because it lacks pronounced angles and cavities, even supporting the sterilization commonly used in operating rooms.
Su beneficio es mucho mayor pues incrementa notablemente su versatilidad en relación con los electrodos convencionales, siendo, por lo tanto, recomendable en centros quirúrgicos con un elevado volumen de intervenciones y sometidos a un riguroso control del gasto y, en general, siempre que se quieran emplear los recursos de forma racional. Its benefit is much greater because it significantly increases its versatility in relation to conventional electrodes, being, therefore, recommended in surgical centers with a high volume of interventions and subject to a rigorous control of expenditure and, in general, whenever they want Use resources rationally.

Claims

REIVINDICACIONES
Ia.- Electrodo neutro o dispersivo para electrocirugia que consiste en un elemento soporte flexible reutilizable y una lámina de gel viscoso conductor desechable.I a .- Neutral or dispersive electrode for electrosurgery consisting of a reusable flexible support element and a disposable conductive viscous gel sheet.
2a.- Electrodo neutro según la reivindicación Ia en el que el soporte flexible reutilizable integra αn cable de conexión. 3a.- Electrodo neutro según las reivindicaciones Ia y 2a en el que el soporte flexible reutilizable integra una lámina de material conductor que actúa como electrodo.2 .- neutral electrode according to claim I wherein the reusable flexible support wire integrates αn connection. 3 .- neutral electrode according to claims I and 2 nd in the reusable flexible support integrates a sheet of conductive material serving as electrode.
4a.- Electrodo neutro según las reivindicaciones Ia y 2a en el que el soporte flexible reutilizable integra dos láminas de material conductor que actúan como electrodo.4 .- neutral electrode according to claims I and 2 nd wherein the flexible support reusable integrates two sheets of conductive material acting as an electrode.
5a.- Electrodo neutro según las reivindicaciones Ia, 2a y 3a con unas dimensiones variables de 8 a 22 centímetros de ancho y de 8 a 14 centímetros de largo.5 .- neutral electrode according to claims I, 2 and 3 with a variable size of 8 to 22 centimeters wide and 14 centimeters 8 to long.
6a.- Electrodo neutro según las reivindicaciones Ia, 2a y 4a con unas dimensiones variables de 8 a 22 centímetros de ancho y 8 a 14 centímetros de largo.6 .- neutral Electrode according to claims I to, 2 and 4 with a variable size of 8 to 22 centimeters wide and 14 centimeters to the 8 long.
7a.- Electrodo neutro para electrocirugia según las reivindicaciones Ia a 6a en el que el soporte reutilizable está fabricado en un material flexible. 8a.- Electrodo neutro para electrocirugia según las reivindicaciones Ia a 6a en el que el gel conductor desechable está fabricado con un material compuesto de una base acuosa que incorpora partículas metálicas. 7 .- neutral electrode for electrosurgery according to claims I to 6 wherein the reusable support is made of a flexible material. 8 .- neutral electrode for electrosurgery according to claims I to 6 wherein the disposable liner gel is made of a composite material of metal particles incorporating aqueous base.
PCT/ES1998/000028 1997-02-10 1998-02-10 Reusable neutral electrode for electrosurgery WO1998034679A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP9700378 1997-02-10
ES9700378A ES2128973B1 (en) 1997-02-10 1997-02-10 NEUTRAL ELECTRODE OF REUSABLE ELECTRO-SCALPEL WITH INDEPENDENT DISPOSABLE CONDUCTIVE GEL.

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WO1998034679A1 true WO1998034679A1 (en) 1998-08-13

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WO2011033485A1 (en) 2009-09-18 2011-03-24 Sugherificio Colla E Fresu S.R.L. Cork and its method of manufacture
ITMI20100750A1 (en) * 2010-04-30 2011-10-31 Fis Srl ELECTROMEDICAL EQUIPMENT FOR DIATHERMIC APPLICATIONS

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US5330526A (en) * 1992-05-01 1994-07-19 Zmd Corporation Combined defibrillation and pacing electrode
US5263481A (en) * 1992-05-21 1993-11-23 Jens Axelgaard Electrode system with disposable gel
WO1994015527A1 (en) * 1993-01-11 1994-07-21 Jens Axelgaard Medical electrode system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011033485A1 (en) 2009-09-18 2011-03-24 Sugherificio Colla E Fresu S.R.L. Cork and its method of manufacture
ITMI20100750A1 (en) * 2010-04-30 2011-10-31 Fis Srl ELECTROMEDICAL EQUIPMENT FOR DIATHERMIC APPLICATIONS

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ES2128973A1 (en) 1999-05-16

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