WO2020136305A1 - Device for the curettage of fistulous tracts - Google Patents

Device for the curettage of fistulous tracts Download PDF

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Publication number
WO2020136305A1
WO2020136305A1 PCT/ES2019/070894 ES2019070894W WO2020136305A1 WO 2020136305 A1 WO2020136305 A1 WO 2020136305A1 ES 2019070894 W ES2019070894 W ES 2019070894W WO 2020136305 A1 WO2020136305 A1 WO 2020136305A1
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Prior art keywords
cylindrical body
fistulous
curettage
conical
distal end
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PCT/ES2019/070894
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Spanish (es)
French (fr)
Inventor
Fernando DE LA PORTILLA DE JUAN
Francisco José CALERO CASTRO
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Servicio Andaluz De Salud
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Publication of WO2020136305A1 publication Critical patent/WO2020136305A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments

Definitions

  • the present invention belongs generally to the field of medicine, and more particularly to the treatment of perianal fistulas.
  • the object of the present invention is a novel device to facilitate the curettage of a patient's fistulous tract.
  • perianal fistulas are a major problem for the patient and the surgeon.
  • An incidence of 1.04 has been registered for every 10,000 people a year in Spain; between 8.6 and 10 per 100,000 people and year in the European Union; And we could also refer to the more than 20,000 new cases of anal fistula that are registered in the US every year.
  • All existing surgical techniques have in common the curettage of the fistula for cleaning in its first steps.
  • Fistula curettage is curettage or debridement of the fistulous tract with a rough or sharp instrument to remove unwanted substances adhering to the internal surface for the purpose of removing the source of infection and remnants of epithelial tissue. In this way, the subsequent healing of the fistulous tract is promoted to revive new granulation tissue.
  • the inventor of the present application has developed a novel device particularly designed to facilitate the cure of fistulous tracts for the medical professional in a simple and convenient way.
  • This device constitutes an important improvement in relation to the craft instruments used today.
  • the device for the curettage of fistulous tracts of the present invention is essentially formed by a cylindrical body comprising: a gripping element, a conical tip, and conical projections. Each of these components is described in more detail below. a) Gripping element
  • the grasping element located at the proximal end of the body, is configured to facilitate grasping of the device by a user. Consequently, the grasping element always remains outside the fistulous tract.
  • the gripping element can in principle have any shape as long as it allows a firm hold during the use of the device.
  • the gripping element may be in the form of a rectangular prismatic plate or an ergonomic handle.
  • the conical tip located at the distal end of the body, is configured to facilitate the introduction of the cylindrical body into the fistulous canal.
  • a distal end of the device body is provided with a tapered shape that facilitates insertion.
  • the conical tip may have a rounded distal edge to prevent patient damage during insertion.
  • Tapered projections It is a plurality of protrusions of truncated conical shape oriented distally and whose longitudinal axis is common with the cylindrical body. These conical protrusions are located in a distal portion of the body close to its distal end, and are responsible for the curettage of the fistula itself.
  • the device comprises five equally spaced conical projections.
  • the number of protrusions and their precise position may vary depending on the needs of each application.
  • This device makes it easier for the user, that is, the medical professional, to perform the fistula curettage thanks to its optimized design.
  • the practitioner grasps the device using the grasping element and carefully inserts the conical tip into the fistulous canal to the distal portion where the conical protrusions meet.
  • the healthcare provider then prints a reciprocating motion to the device in which the conical projections alternately move in and out of the fistulous canal, thereby generating a curettage effect.
  • the device further comprises a hole located in a position adjacent to the distal end of the cylindrical body for the introduction of a guide line for debridement.
  • This hole may be located, for example, in a section of the cylindrical body that separates the last conical projection from the conical distal tip.
  • the dimensions of the device of the present invention will be chosen based on each particular application.
  • the cylindrical body has a length of between 98 mm and 140 mm and a radius of between 1.5 mm and 1.05 mm, and the conical projections have a radius of greater than 3 0.0mm and 2.1mm.
  • This range of dimensions allows the treatment of most patients.
  • the full dimensions of various examples of devices according to the invention will be provided later in this document.
  • Another preferred embodiment of the invention is directed to a set of several devices, preferably four, of the characteristics described in this document. and that they have different dimensions. This set or kit of devices, which could be marketed together as a single unit, would allow the medical professional to select the most appropriate device size for the treatment of each patient based on their specific anatomical characteristics.
  • Fig. 1 shows a perspective view of an example of a device of the present invention.
  • Figs. 2a-2c show respectively an elevation, plan and profile of the device example of the present invention.
  • Fig. 3 shows the plan of the example device of the present invention dimensioned according to preferred dimensions.
  • Fig. 4 shows the profile of the example device of the present invention dimensioned according to preferred dimensions.
  • Fig. 5 shows the distal end portion of the device of the present invention dimensioned according to preferred dimensions.
  • Figs. 1 and 2a-2c show different views of the device (1) formed by a cylindrical body (2) that extends between a proximal end and a distal end.
  • proximal G and" distar are interpreted in the usual way within the medical field, so that the proximal end is closest to the body of the medical professional who handles the device (1) and the proximal end it is the farthest from the body of the medical professional who handles the device (1).
  • a gripping element (3) designed to facilitate the holding of the device (1) by the medical professional.
  • the gripping element (3) is simply a rectangular prismatic shaped plate. That is, it is an essentially flat plate with a rectangular shape and a certain thickness much less than the other two dimensions.
  • the distal end of the cylindrical body (2) ends in a conical tip (4) oriented longitudinally and provided with rounded edges to facilitate insertion of the device (1) in the fistulous tract.
  • a hole (6) has also been arranged, designed for the introduction of a line that serves as a guide for the debridement operation.
  • a distal portion of the device (1) of the invention comprises several conical projections (5) responsible for the curettage action itself provided by the device (1).
  • the distal portion in which said projections (5) are separated from the conical tip (4) a small section in which the hole (6) is arranged, and can occupy a space of between approximately one third and one fourth of the full length of the device (1).
  • the projections (5) are equispaced from each other, and as previously mentioned in this document they have a truncated conical shape and are oriented distally with a longitudinal axis common with the cylindrical body.
  • the conical shape of the projections (5) allows a simple introduction of the device (1) in the fistulous tract.
  • the device alternately moves in and out, and consequently the edges of the larger base of the protrusions ( 5) conical rubs against the walls of said tract, causing curettage.
  • the device of the invention can be provided in packages or sets of several units with different dimensions.
  • a set can consist of four devices (1) of the following dimensions:
  • Figs. 3-5 graphically show the intervals corresponding to the dimensions of this tool set in an example of a device (1) comprising four conical projections (5) and where the hole (6) for the guide line in the debridement operation is located at the conical tip itself (4).

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
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  • Heart & Thoracic Surgery (AREA)
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Abstract

The invention discloses a device (1) for the curettage of fistulous tracts, formed by a cylindrical body (2) comprising: a grip element (3) at its proximal extremity configured to facilitate the holding by a user; a conical point (4) at its distal extremity, configured to facilitate the insertion of the cylindrical body (2) into the fistulous channel; and a plurality of truncated conical protuberances (5) oriented in a distal direction and whose longitudinal axis is common with the cylindrical body (2), and which are located at a distal portion of the cylindrical body (2) in the proximity of its distal extremity.

Description

DESCRIPCIÓN DESCRIPTION
Dispositivo para el legrado de tractos fistulosos OBJETO DE LA INVENCIÓN Device for the curettage of fistulous tracts OBJECT OF THE INVENTION
La presente invención pertenece en general al campo de la medicina, y más particularmente al tratamiento de las fístulas perianales. El objeto de la presente invención es un novedoso dispositivo para facilitar el legrado del tracto fistuloso de un paciente. The present invention belongs generally to the field of medicine, and more particularly to the treatment of perianal fistulas. The object of the present invention is a novel device to facilitate the curettage of a patient's fistulous tract.
ANTECEDENTES DE LA INVENCIÓN Hoy en día las fístulas perianales suponen un importante problema para el paciente y el cirujano. Se ha registrado una incidencia del 1 ,04 por cada 10.000 personas al año en España; entre 8,6 y 10 por cada 100.000 personas y año en la Unión Europea; y podríamos referirnos también a los más de 20.000 casos nuevos de fístula anal que se registran en EEUU cada año. En nuestro medio, aunque existen pocos datos acerca de su verdadera prevalencia, se estima que puede significar entre el 10 al 30% de las intervenciones colo-proctológicas. Todas las técnicas quirúrgicas existentes, tienen en común el curetaje de la fístula para su limpieza en sus primeros pasos. BACKGROUND OF THE INVENTION Today, perianal fistulas are a major problem for the patient and the surgeon. An incidence of 1.04 has been registered for every 10,000 people a year in Spain; between 8.6 and 10 per 100,000 people and year in the European Union; And we could also refer to the more than 20,000 new cases of anal fistula that are registered in the US every year. In our setting, although there are few data about its true prevalence, it is estimated that it can mean between 10 to 30% of colo-proctological interventions. All existing surgical techniques have in common the curettage of the fistula for cleaning in its first steps.
El curetaje de la fístula es el legrado o desbridamiento del trayecto fistuloso con un instrumento áspero o cortante para eliminar las sustancias indeseadas adheridas a la superficie interna con el propósito de eliminar la fuente de infección y los restos de tejido epitelial. De ese modo, se promueve la posterior cicatrización del tracto fistuloso para reavivar un nuevo tejido de granulación. Aunque existen varios métodos para llevar a cabo este procedimiento, actualmente no hay un instrumental que permita el legrado de la fístula anal de forma eficaz, sin agrandar el orificio interno, sin dañar las estructuras adyacentes y que se introduzca con facilidad desde el exterior de la fístula hasta el interior. En la mayoría de los casos, se utilizan instrumentos desarrollados de manera artesana, y en cualquiera de los casos los instrumentos existentes no cumplen las expectativas esperadas. DESCRIPCIÓN DE LA INVENCIÓN Fistula curettage is curettage or debridement of the fistulous tract with a rough or sharp instrument to remove unwanted substances adhering to the internal surface for the purpose of removing the source of infection and remnants of epithelial tissue. In this way, the subsequent healing of the fistulous tract is promoted to revive new granulation tissue. Although there are several methods to carry out this procedure, currently there is no instruments that allow the anal fistula to cure effectively, without enlarging the internal orifice, without damaging the adjacent structures and that is easily inserted from the outside of the fistula to the interior. In most cases, artisanally developed instruments are used, and in either case the existing instruments do not meet expected expectations. DESCRIPTION OF THE INVENTION
El inventor de la presente solicitud ha desarrollado un novedoso dispositivo particularmente diseñado para facilitar al profesional médico el legrado de tractos fistulosos de una manera sencilla y conveniente. Este dispositivo constituye una importante mejora con relación a los instrumentos artesanales utilizados en la actualidad. El dispositivo para el legrado de tractos fistulosos de la presente invención está formado fundamentalmente por un cuerpo cilindrico que comprende: un elemento de agarre, una punta cónica, y unos salientes cónicos. A continuación, se describe cada uno de estos componentes con mayor detalle. a) Elemento de agarre The inventor of the present application has developed a novel device particularly designed to facilitate the cure of fistulous tracts for the medical professional in a simple and convenient way. This device constitutes an important improvement in relation to the craft instruments used today. The device for the curettage of fistulous tracts of the present invention is essentially formed by a cylindrical body comprising: a gripping element, a conical tip, and conical projections. Each of these components is described in more detail below. a) Gripping element
El elemento de agarre, situado en el extremo proximal del cuerpo, está configurado para facilitar el agarre del dispositivo por parte de un usuario. En consecuencia, el elemento de agarre permanece siempre en el exterior del tracto fistuloso. The grasping element, located at the proximal end of the body, is configured to facilitate grasping of the device by a user. Consequently, the grasping element always remains outside the fistulous tract.
El elemento de agarre puede en principio tener cualquier forma siempre que permita una sujeción firme durante el uso del dispositivo. Por ejemplo, en realizaciones preferidas de la presente invención, el elemento de agarre puede tener forma de placa prismática rectangular o de mango ergonómico. b) Punta cónica The gripping element can in principle have any shape as long as it allows a firm hold during the use of the device. For example, in preferred embodiments of the present invention, the gripping element may be in the form of a rectangular prismatic plate or an ergonomic handle. b) Conical tip
La punta cónica, ubicada en el extremo distal del cuerpo, está configurada para facilitar la introducción del cuerpo cilindrico en el canal fistuloso. Se proporciona así un extremo distal del cuerpo del dispositivo con una forma ahusada que facilita la inserción. La punta cónica puede tener el borde distal redondeado para evitar daños al paciente durante la introducción. c) Salientes cónicos Se trata de una pluralidad de salientes de forma cónica truncada orientados en sentido distal y cuyo eje longitudinal es común con el cuerpo cilindrico. Estos salientes cónicos están ubicados en una porción distal del cuerpo próxima a su extremo distal, y son los responsables del legrado de la fístula propiamente dicho. The conical tip, located at the distal end of the body, is configured to facilitate the introduction of the cylindrical body into the fistulous canal. Thus a distal end of the device body is provided with a tapered shape that facilitates insertion. The conical tip may have a rounded distal edge to prevent patient damage during insertion. c) Tapered projections It is a plurality of protrusions of truncated conical shape oriented distally and whose longitudinal axis is common with the cylindrical body. These conical protrusions are located in a distal portion of the body close to its distal end, and are responsible for the curettage of the fistula itself.
En una realización particular preferida de la invención, el dispositivo comprende cinco salientes cónicos equiespaciados entre sí. Sin embargo, el número de salientes y su posición precisa puede variar en función de las necesidades de cada aplicación. In a particular preferred embodiment of the invention, the device comprises five equally spaced conical projections. However, the number of protrusions and their precise position may vary depending on the needs of each application.
Este dispositivo facilita al usuario, es decir, al profesional médico, la realización del legrado de la fístula gracias a su diseño optimizado. El profesional médico agarra el dispositivo mediante el elemento de agarre e introduce la punta cónica cuidadosamente en el canal fistuloso hasta la porción distal donde se encuentran los salientes cónicos. A continuación, el profesional médico imprime al dispositivo un movimiento de vaivén en el que los salientes cónicos se desplazan de manera alternativa hacia dentro y fuera del canal fistuloso, generando así un efecto de legrado. This device makes it easier for the user, that is, the medical professional, to perform the fistula curettage thanks to its optimized design. The practitioner grasps the device using the grasping element and carefully inserts the conical tip into the fistulous canal to the distal portion where the conical protrusions meet. The healthcare provider then prints a reciprocating motion to the device in which the conical projections alternately move in and out of the fistulous canal, thereby generating a curettage effect.
En una realización particularmente preferida de la invención, el dispositivo además comprende un orificio ubicado en una posición adyacente al extremo distal del cuerpo cilindrico para la introducción de un sedal de guía para el desbridamiento. Este orificio puede estar situado, por ejemplo, en un tramo del cuerpo cilindrico que separa el último saliente cónico de la punta distal cónica. In a particularly preferred embodiment of the invention, the device further comprises a hole located in a position adjacent to the distal end of the cylindrical body for the introduction of a guide line for debridement. This hole may be located, for example, in a section of the cylindrical body that separates the last conical projection from the conical distal tip.
En lo que respecta a tamaño, las dimensiones del dispositivo de la presente invención se elegirán en función de cada aplicación particular. Por ejemplo, en una realización preferida de la invención, el cuerpo cilindrico tiene una longitud de entre 98 mm y 140 mm y un radio de entre 1 ,5 mm y 1 ,05 mm, y los salientes cónicos tienen un radio mayor de entre 3,0 mm y 2,1 mm. Este rango de dimensiones permiten el tratamiento de la mayor parte de pacientes. Más adelante en este documento se proporcionarán las dimensiones completas de varios ejemplos de dispositivos según la invención. Otra realización preferida de la invención está dirigida a un conjunto de varios dispositivos, preferentemente cuatro, de las características descritas en este documento y que tienen dimensiones diferentes. Este conjunto o kit de dispositivos, que se podrían comercializar de manera conjunta como una única unidad, permitirían al profesional médico seleccionar el tamaño de dispositivo más adecuado para el tratamiento de cada paciente en función de sus características anatómicas concretas. Regarding size, the dimensions of the device of the present invention will be chosen based on each particular application. For example, in a preferred embodiment of the invention, the cylindrical body has a length of between 98 mm and 140 mm and a radius of between 1.5 mm and 1.05 mm, and the conical projections have a radius of greater than 3 0.0mm and 2.1mm. This range of dimensions allows the treatment of most patients. The full dimensions of various examples of devices according to the invention will be provided later in this document. Another preferred embodiment of the invention is directed to a set of several devices, preferably four, of the characteristics described in this document. and that they have different dimensions. This set or kit of devices, which could be marketed together as a single unit, would allow the medical professional to select the most appropriate device size for the treatment of each patient based on their specific anatomical characteristics.
BREVE DESCRIPCIÓN DE LAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
La Fig. 1 muestra una vista en perspectiva de un ejemplo de dispositivo de la presente invención. Fig. 1 shows a perspective view of an example of a device of the present invention.
Las Figs. 2a-2c muestran respectivamente un alzado, planta y perfil del ejemplo de dispositivo de la presente invención. Figs. 2a-2c show respectively an elevation, plan and profile of the device example of the present invention.
La Fig. 3 muestra la planta del ejemplo de dispositivo de la presente invención acotado de acuerdo con unas dimensiones preferidas. Fig. 3 shows the plan of the example device of the present invention dimensioned according to preferred dimensions.
La Fig. 4 muestra el perfil del ejemplo de dispositivo de la presente invención acotado de acuerdo con unas dimensiones preferidas. Fig. 4 shows the profile of the example device of the present invention dimensioned according to preferred dimensions.
La Fig. 5 muestra la parte de extremo distal del dispositivo de la presente invención acotado de acuerdo con unas dimensiones preferidas. Fig. 5 shows the distal end portion of the device of the present invention dimensioned according to preferred dimensions.
REALIZACIÓN PREFERENTE DE LA INVENCIÓN PREFERRED EMBODIMENT OF THE INVENTION
Se describe a continuación un ejemplo particular de dispositivo (1) según la presente invención haciendo referencia a las figuras adjuntas, en las que se representan las diferentes partes que lo componen. A particular example of device (1) according to the present invention is described below with reference to the attached figures, in which the different parts that compose it are represented.
Las Figs. 1 y 2a-2c muestran diferentes vistas del dispositivo (1) formado por un cuerpo (2) cilindrico que se extiende entre un extremo proximal y un extremo distal. En este contexto, los términos“ próxima G y“distar se interpretan del modo habitual dentro del campo de la medicina, de modo que el extremo proximal es el más cercano al cuerpo del profesional médico que maneja el dispositivo (1) y el extremo proximal es el más alejado del cuerpo del profesional médico que maneja el dispositivo (1). En el extremo proximal del cuerpo (2) cilindrico se encuentra un elemento de agarre (3) diseñado para facilitar la sujeción del dispositivo (1) por el profesional médico. En este ejemplo particular, el elemento de agarre (3) es simplemente una placa de forma prismática rectangular. Es decir, se trata de una placa esencialmente plana de forma rectangular y un determinado grosor mucho menor que las dos dimensiones restantes. Figs. 1 and 2a-2c show different views of the device (1) formed by a cylindrical body (2) that extends between a proximal end and a distal end. In this context, the terms "proximal G and" distar are interpreted in the usual way within the medical field, so that the proximal end is closest to the body of the medical professional who handles the device (1) and the proximal end it is the farthest from the body of the medical professional who handles the device (1). At the proximal end of the cylindrical body (2) is a gripping element (3) designed to facilitate the holding of the device (1) by the medical professional. In this particular example, the gripping element (3) is simply a rectangular prismatic shaped plate. That is, it is an essentially flat plate with a rectangular shape and a certain thickness much less than the other two dimensions.
El extremo distal del cuerpo (2) cilindrico termina en una punta cónica (4) orientada longitudinalmente y dotada de bordes redondeados para facilitar la inserción del dispositivo (1) en el tracto fistuloso. En una posición directamente adyacente a la base de la punta cónica (4) se ha dispuesto además un orificio (6) diseñado para la introducción de un sedal que sirva de guía para la operación de desbridamiento. The distal end of the cylindrical body (2) ends in a conical tip (4) oriented longitudinally and provided with rounded edges to facilitate insertion of the device (1) in the fistulous tract. In a position directly adjacent to the base of the conical tip (4), a hole (6) has also been arranged, designed for the introduction of a line that serves as a guide for the debridement operation.
Además, una porción distal del dispositivo (1) de la invención comprende varios salientes (5) cónicos responsables de la propia acción de legrado proporcionada por el dispositivo (1). La porción distal en la que están dichos salientes (5) está separada de la punta cónica (4) un pequeño tramo en el que está dispuesto el orificio (6), y puede ocupar un espacio de entre aproximadamente la tercera y la cuarta parte de la longitud completa del dispositivo (1). Los salientes (5) están equiespaciados entre sí, y como se ha comentado con anterioridad en este documento tienen una forma cónica truncada y están orientados en sentido distal con eje longitudinal común con el cuerpo cilindrico. Así, la forma cónica de los salientes (5) permite una introducción sencilla del dispositivo (1) en el tracto fistuloso. Una vez al menos parte de la porción distal donde se encuentran los salientes (5) está introducida dentro del tracto fistuloso, el dispositivo se desplaza de manera alternativa hacia dentro y hacia fuera, y como consecuencia los bordes de la base mayor de los salientes (5) cónicos roza contra las paredes de dicho tracto, provocando el legrado. Furthermore, a distal portion of the device (1) of the invention comprises several conical projections (5) responsible for the curettage action itself provided by the device (1). The distal portion in which said projections (5) are separated from the conical tip (4) a small section in which the hole (6) is arranged, and can occupy a space of between approximately one third and one fourth of the full length of the device (1). The projections (5) are equispaced from each other, and as previously mentioned in this document they have a truncated conical shape and are oriented distally with a longitudinal axis common with the cylindrical body. Thus, the conical shape of the projections (5) allows a simple introduction of the device (1) in the fistulous tract. Once at least part of the distal portion where the protrusions (5) are located is inserted into the fistulous tract, the device alternately moves in and out, and consequently the edges of the larger base of the protrusions ( 5) conical rubs against the walls of said tract, causing curettage.
En cuanto a tamaño, como se ha comentado con anterioridad en este documento, el dispositivo de la invención se puede proporcionar en paquetes o conjuntos de varias unidades con diferentes dimensiones. Por ejemplo, un conjunto puede estar formado por cuatro dispositivos (1) de las siguientes dimensiones: As for size, as discussed earlier in this document, the device of the invention can be provided in packages or sets of several units with different dimensions. For example, a set can consist of four devices (1) of the following dimensions:
Figure imgf000007_0001
Las Figs. 3-5 muestran gráficamente los intervalos correspondientes a las dimensiones de este conjunto de herramientas en un ejemplo de dispositivo (1) que comprende cuatro salientes (5) cónicos y donde el orificio (6) para el sedal de guía en la operación de desbridamiento está ubicado en la propia punta cónica (4).
Figure imgf000007_0001
Figs. 3-5 graphically show the intervals corresponding to the dimensions of this tool set in an example of a device (1) comprising four conical projections (5) and where the hole (6) for the guide line in the debridement operation is located at the conical tip itself (4).
Teniendo esto en cuenta, se proporciona a continuación un cuadro que incluye las dimensiones concretas de cada uno de los dispositivos (1) individuales que forman este conjunto de cuatro dispositivos (1): With this in mind, a table is provided below that includes the specific dimensions of each of the individual devices (1) that make up this set of four devices (1):
Figure imgf000008_0001
Figure imgf000008_0001

Claims

REIVINDICACIONES
1. Dispositivo (1) para el legrado de tractos fistulosos, caracterizado por que está formado por un cuerpo (2) cilindrico que comprende: 1. Device (1) for the curettage of fistulous tracts, characterized in that it is formed by a cylindrical body (2) comprising:
d) un elemento de agarre (3) en su extremo proximal configurado para facilitar el agarre por parte de un usuario; d) a grasping element (3) at its proximal end configured to facilitate grasping by a user;
e) una punta (4) cónica en su extremo distal configurada para facilitar la introducción del cuerpo (2) cilindrico en el canal fistuloso; y e) a conical tip (4) at its distal end configured to facilitate the introduction of the cylindrical body (2) into the fistulous canal; and
f) una pluralidad de salientes (5) de forma cónica truncada orientados en sentido distal y cuyo eje longitudinal es común con el cuerpo (2) cilindrico, que están ubicados en una porción distal del cuerpo (2) cilindrico próxima a su extremo distal. f) a plurality of protrusions (5) of truncated conical shape oriented distally and whose longitudinal axis is common with the cylindrical body (2), which are located in a distal portion of the cylindrical body (2) close to its distal end.
2. Dispositivo (1) de acuerdo con la reivindicación 1 , donde el elemento de agarre (3) es una placa prismática rectangular. 2. Device (1) according to claim 1, wherein the gripping element (3) is a rectangular prismatic plate.
3. Dispositivo (1) de acuerdo con la reivindicación 1 , donde el elemento de agarre (3) es un mango ergonómico. 3. Device (1) according to claim 1, wherein the gripping element (3) is an ergonomic handle.
4. Dispositivo (1) de acuerdo con cualquiera de las reivindicaciones anteriores, que comprende cinco salientes (5) cónicos equiespaciados entre sí. Device (1) according to any of the preceding claims, comprising five equally spaced conical projections (5).
5. Dispositivo (1) de acuerdo con cualquiera de las reivindicaciones anteriores, que además comprende un orificio (6) ubicado en una posición adyacente al extremo distal del cuerpo (2) cilindrico para la introducción de un sedal de guía para el desbridamiento. Device (1) according to any of the preceding claims, further comprising a hole (6) located in a position adjacent to the distal end of the cylindrical body (2) for the introduction of a guide line for debridement.
6. Dispositivo (1) de acuerdo con cualquiera de las reivindicaciones anteriores, donde el cuerpo (2) cilindrico tiene una longitud de entre 98 mm y 140 mm y un radio de entre 1 ,5 mm y 1 ,05 mm, y donde los salientes (5) cónicos tienen un radio mayor de entre 3,0 mm y 2,1 mm. Device (1) according to any of the preceding claims, wherein the cylindrical body (2) has a length of between 98 mm and 140 mm and a radius of between 1.5 mm and 1.05 mm, and where the Tapered projections (5) have a radius greater than 3.0mm to 2.1mm.
7. Conjunto formado por varios dispositivos (1) según la reivindicación 6, que tienen dimensiones diferentes. 7. Set formed by several devices (1) according to claim 6, having different dimensions.
8. Conjunto de acuerdo con la reivindicación 7, que está formado por cuatro dispositivos (1). 8. Assembly according to claim 7, which consists of four devices (1).
PCT/ES2019/070894 2018-12-28 2019-12-27 Device for the curettage of fistulous tracts WO2020136305A1 (en)

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ESP201831289 2018-12-28
ES201831289 2018-12-28

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201282991Y (en) * 2008-10-21 2009-08-05 北京大学第三医院 Scraper for endometrium
WO2015132439A1 (en) * 2014-03-04 2015-09-11 Servicio Andaluz De Salud Curette for fistulas
CN105877809A (en) * 2014-09-03 2016-08-24 孔凡彪 Adjustable fistula channel curettage device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201282991Y (en) * 2008-10-21 2009-08-05 北京大学第三医院 Scraper for endometrium
WO2015132439A1 (en) * 2014-03-04 2015-09-11 Servicio Andaluz De Salud Curette for fistulas
CN105877809A (en) * 2014-09-03 2016-08-24 孔凡彪 Adjustable fistula channel curettage device

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