ES2737524B2 - DEEPITELIZED CONNECTIVE TISSUE EXTRACTION DEVICE - Google Patents
DEEPITELIZED CONNECTIVE TISSUE EXTRACTION DEVICE Download PDFInfo
- Publication number
- ES2737524B2 ES2737524B2 ES201830689A ES201830689A ES2737524B2 ES 2737524 B2 ES2737524 B2 ES 2737524B2 ES 201830689 A ES201830689 A ES 201830689A ES 201830689 A ES201830689 A ES 201830689A ES 2737524 B2 ES2737524 B2 ES 2737524B2
- Authority
- ES
- Spain
- Prior art keywords
- cutting element
- stop
- connective tissue
- epithelium
- soft tissue
- 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.)
- Expired - Fee Related
Links
- 210000002808 connective tissue Anatomy 0.000 title claims description 21
- 238000000605 extraction Methods 0.000 title claims description 12
- 210000000981 epithelium Anatomy 0.000 claims description 20
- 210000004872 soft tissue Anatomy 0.000 claims description 14
- 230000035515 penetration Effects 0.000 claims description 4
- 210000003128 head Anatomy 0.000 description 6
- 210000001519 tissue Anatomy 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 210000000214 mouth Anatomy 0.000 description 3
- 210000003484 anatomy Anatomy 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 210000003254 palate Anatomy 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 210000002469 basement membrane Anatomy 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 201000005562 gingival recession Diseases 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 210000004379 membrane Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- 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
- A61B17/322—Skin grafting apparatus
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C3/00—Dental tools or instruments
- A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
Description
DESCRIPCIÓNDESCRIPTION
DISPOSITIVO DE EXTRACCIÓN DE TEJIDOS CONECTIVOS DESEPITELIZADOS DEEPITELIZED CONNECTIVE TISSUE EXTRACTION DEVICE
OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION
La presente invención se encuadra en el campo técnico de los instrumentos quirúrgicos, más concretamente en el de los instrumentos quirúrgicos de corte, y se refiere en particular a un dispositivo destinado a realizar la incisión y corte en tejidos blandos, preferentemente del paladar, que permite obtener injertos de tejido conectivo totalmente desepitelizados y con una morfología homogénea en una sola incisión.The present invention falls within the technical field of surgical instruments, more specifically in that of surgical cutting instruments, and relates in particular to a device intended to incise and cut soft tissue, preferably the palate, which allows obtain totally de-epithelialized connective tissue grafts with a homogeneous morphology in a single incision.
ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION
Se conoce como tejido epitelial o epitelio a un tejido compuesto por células adyacentes sin sustancias intercelulares que las separen, e incluye todas las membranas compuestas por células que recubren tanto el exterior del organismo como las superficies internas. El epitelio es avascular, es decir, no contiene vasos y por lo tanto carece de irrigación sanguínea, pero todos los epitelios crecen sobre un tejido conectivo subyacente rico en vasos, del que lo separa una capa extracelular de sostén, conocida como membrana basal. El epitelio tiene funciones esencialmente protectoras, actuando como barrera.It is known as epithelial tissue or epithelium to a tissue made up of adjacent cells without intercellular substances that separate them, and includes all the membranes made up of cells that cover both the exterior of the organism and the internal surfaces. The epithelium is avascular, that is, it does not contain vessels and therefore lacks blood supply, but all epithelia grow on an underlying connective tissue rich in vessels, separated by an extracellular supportive layer, known as the basement membrane. The epithelium has essentially protective functions, acting as a barrier.
Por otro lado, en el campo técnico de la periodoncia, se conoce como injerto de tejido conectivo a un procedimiento mínimamente invasivo consistente en extraer tejido conectivo del paladar, generalmente en forma de franja, de una zona de la boca, y disponerlo en un área en la que se necesite, ya sea para, por ejemplo, cubrir un diente o para colocarlo alrededor de implantes. Las principales indicaciones de la realización de un injerto de tejido conectivo son las recesiones gingivales.On the other hand, in the technical field of periodontics, a minimally invasive procedure consisting of removing connective tissue from the palate, generally in the form of a stripe, from an area of the mouth, and arranging it in an area is known as connective tissue grafting. where it is needed, either to cover a tooth, for example, or to place it around implants. The main indications for performing a connective tissue graft are gingival recessions.
En la extracción o remoción de la encía se obtiene una franja consistente tanto en el tejido conectivo como en el epitelio, vinculados entre sí. En la mayoría de las técnicas de periodoncia es necesario proceder a la separación y eliminación de dicho epitelio como paso previo a la re-inserción del tejido conectivo en la zona donde se necesite, aunque para los injertos llamados de encía libre sí que se conserva el epitelio como parte del injerto.In the extraction or removal of the gum, a strip is obtained consisting of both the connective tissue and the epithelium, linked together. In most periodontic techniques it is necessary to proceed to the separation and removal of said epithelium as a previous step to the re-insertion of the connective tissue in the area where it is needed, Although for the so-called free gum grafts, the epithelium is preserved as part of the graft.
Los actuales procedimientos de extracción son complejos y prolongados, necesitándose en ocasiones la realización de una pluralidad de incisiones en el paciente para poder obtener una franja útil. Asimismo, las técnicas y dispositivos habitualmente empleados en la separación y eliminación del epitelio para obtener el injerto útil de tejido conectivo no aseguran la obtención de tejidos de morfología homogénea y completamente desepitelizados, listos para su inserción.The current extraction procedures are complex and prolonged, sometimes requiring the performance of a plurality of incisions in the patient in order to obtain a useful strip. Likewise, the techniques and devices commonly used in the separation and elimination of the epithelium to obtain the useful graft of connective tissue do not ensure the obtaining of tissues of homogeneous morphology and completely de-epithelialized, ready for insertion.
DESCRIPCIÓN DE LA INVENCIÓNDESCRIPTION OF THE INVENTION
El objeto de la invención consiste en un dispositivo quirúrgico concebido para una obtención rápida, sencilla y mediante una única operación de tejidos conectivos homogéneos y desepitelizados, listos para su posterior injerto en un área anatómica donde se necesite. El dispositivo está preferentemente diseñado para su empleo en la obtención de tejidos de la cavidad bucal para su uso en periodoncia y cirugía odontológica, aunque su uso no está limitado a dicho campo.The object of the invention consists of a surgical device conceived for a quick, easy and simple operation to obtain homogeneous and de-epithelialized connective tissues, ready for subsequent grafting in an anatomical area where needed. The device is preferably designed for use in obtaining tissues from the oral cavity for use in periodontics and dental surgery, although its use is not limited to this field.
Para ello, el dispositivo está conformado básicamente por un mango de asido y manipulación, y un cabezal de corte vinculado a uno de los extremos del mango. El cabezal comprende a su vez un tope, para lim itar la penetración en el tejido blando del que se pretende extraer el tejido conectivo, y dos elementos cortantes, preferentemente cuchillas, situados a distintas alturas, para extracción por corte en el tejido blando de, en primer lugar, la capa externa de epitelio y, en segundo lugar, una franja de tejido conectivo libre de epitelio. Dos láminas perpendiculares a las cuchillas actúan como soporte de éstas, así como limitan la anchura del corte realizado.For this, the device is basically made up of a handle for handling and handling, and a cutting head linked to one of the ends of the handle. The head in turn comprises a stop, to limit the penetration into the soft tissue from which it is intended to extract the connective tissue, and two cutting elements, preferably blades, located at different heights, for extraction by cutting into the soft tissue of, firstly, the outer layer of epithelium and, secondly, a strip of connective tissue free of epithelium. Two blades perpendicular to the blades act as support for the blades, as well as limiting the width of the cut made.
En una realización preferente el tope consiste en una pletina perpendicular al extremo del mango, y las cuchillas se disponen paralelas entre sí y paralelas a su vez a dicha pletina, para obtención de franjas homogéneas de tejido.In a preferred embodiment, the stop consists of a plate perpendicular to the end of the handle, and the blades are arranged parallel to each other and in turn parallel to said plate, to obtain homogeneous strips of tissue.
La principal característica diferenciadora de este dispositivo reside en la simplificación de la técnica de extracción de tejido y en la reducción de los tiempos operatorios, obteniéndose un tejido conectivo totalmente desepitelizado, y por tanto listo para su injerto, en el mismo momento de la remoción.The main distinguishing feature of this device lies in the simplification of the tissue removal technique and in the reduction of operating times, obtaining a totally de-epithelialized connective tissue, and therefore ready for grafting, at the same time of removal.
Desde el punto de vista del profesional sanitario, otras ventajas adicionales radican en el bajo riesgo existente en su uso en extracciones, y en la posibilidad de realizar una única incisión, en lugar de varias como hasta ahora. La curva de aprendizaje del dispositivo es prácticamente inexistente, y el tejido obtenido para el injerto es perfectamente homogéneo y libre de epitelio.From the point of view of the healthcare professional, other additional advantages lie in the low risk existing in its use in extractions, and in the possibility of making a single incision, instead of several as until now. The learning curve of the device is practically non-existent, and the tissue obtained for the graft is perfectly homogeneous and free of epithelium.
En una realización alternativa del dispositivo de invención, destinada a la obtención de injertos de encía libre, se suprime una de las cuchillas, para la obtención de una única franja de tejido blando que incluye al epitelio.In an alternative embodiment of the device of the invention, intended to obtain free gum grafts, one of the blades is removed, to obtain a single strip of soft tissue that includes the epithelium.
DESCRIPCIÓN DE LOS DIBUJOSDESCRIPTION OF THE DRAWINGS
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, de acuerdo con un ejemplo preferente de realización práctica de la misma, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical embodiment thereof, a set of drawings is included as an integral part of said description. where, by way of illustration and not limitation, the following has been represented:
Figura 1.- Muestra una vista en perspectiva del dispositivo, en la que se aprecian sus principales elementos constituyentes.Figure 1.- Shows a perspective view of the device, showing its main constituent elements.
Figura 2.- Muestra una vista en perspectiva de un detalle del cabezal del dispositivo.Figure 2.- Shows a perspective view of a detail of the device head.
Figura 3.- Muestra una vista esquemática del dispositivo en uso.Figure 3.- Shows a schematic view of the device in use.
REALIZACIÓN PREFERENTE DE LA INVENCIÓNPREFERRED EMBODIMENT OF THE INVENTION
Seguidamente se proporciona, con ayuda de las figuras anteriormente referidas, una explicación detallada de un ejemplo de realización preferente del objeto de la presente invención. A detailed explanation of a preferred embodiment of the object of the present invention is provided below with the aid of the aforementioned figures.
El dispositivo de extracción de tejidos conectivos desepitelizados que se describe, mostrado esquemáticamente en la figura 1, está conformado por un mango (1) de asido, y un cabezal (2) de corte, vinculado a uno de los extremos del mango (1).The device for removing de-epithelialized connective tissues that is described, shown schematically in Figure 1, is made up of a handle (1) for gripping, and a cutting head (2), linked to one of the ends of the handle (1) .
Como se observa en las figuras adjuntas, en esta realización preferente el mango (1) presenta un primer sector (3) y un segundo sector (4), acodado respecto al primer sector (3) para facilitar la introducción y el manejo del dispositivo en el interior de zonas anatómicas de reducidas dimensiones, como la cavidad bucal.As seen in the attached figures, in this preferred embodiment the handle (1) has a first sector (3) and a second sector (4), angled with respect to the first sector (3) to facilitate the introduction and handling of the device in the interior of small anatomical areas, such as the oral cavity.
En la figura 2 se ilustra un detalle del cabezal (2) de corte, destinado a elim inar mediante corte una franja de tejido blando. Dicho cabezal (2) comprende a su vez, en primer lugar, un tope (5) limitador, que en esta realización preferente consiste en una pletina horizontal que se prolonga perpendicularmente desde el extremo del mango (1) donde se sitúa el cabezal (2), estando dicho tope (5) destinado a impedir una penetración excesiva del cabezal (2) en el tejido blando a cortar.Figure 2 illustrates a detail of the cutting head (2), intended to cut off a strip of soft tissue. Said head (2) in turn comprises, first of all, a limiting stop (5), which in this preferred embodiment consists of a horizontal plate that extends perpendicularly from the end of the handle (1) where the head (2) is located. ), said stop (5) being intended to prevent excessive penetration of the head (2) into the soft tissue to be cut.
Del tope (5) parten perpendicularmente dos pletinas de soporte (6), paralelas entre sí. Entre ambas pletinas de soporte (6), y solidaria y perpendicularmente a ellas, se disponen un elemento cortante intermedio (7) y un elemento cortante distal (8). En esta realización preferente, ambos elementos cortantes (7,8) son sendas cuchillas paralelas entre sí y paralelas a su vez a la pletina lim itadora que conforma el tope (5).From the stop (5) two support plates (6) start perpendicularly, parallel to each other. Between both support plates (6), and integrally and perpendicularly to them, an intermediate cutting element (7) and a distal cutting element (8) are arranged. In this preferred embodiment, both cutting elements (7,8) are blades parallel to each other and parallel to the limiting plate that forms the stop (5).
El elemento cortante intermedio (7), más próximo al tope (5) está dotado de un filo (9) y elimina mediante corte la capa externa de epitelio (10) del tejido blando. El elemento cortante distal (8), por su parte, está vinculado a unos respectivos extremos libres (11) de las pletinas de soporte (6), también presenta un correspondiente filo (9), y está destinado a elim inar mediante corte una franja de tejido conectivo (12) del tejido blando, más concretamente la franja más externa, situada en la zona inmediatamente próxima al epitelio.The intermediate cutting element (7), closest to the stop (5) is provided with a cutting edge (9) and cuts off the outer layer of epithelium (10) from the soft tissue. The distal cutting element (8), on the other hand, is linked to respective free ends (11) of the support plates (6), it also has a corresponding edge (9), and is intended to eliminate by cutting a fringe connective tissue (12) of soft tissue, more specifically the outermost stripe, located in the area immediately next to the epithelium.
La distancia de separación entre ambas pletinas de soporte (6) determina la anchura de la franja del tejido blando extraído. Por su parte, la distancia de separación existente entre el elemento cortante intermedio (7) y el elemento cortante distal (8) determina el grosor de la franja de tejido conectivo (12) extraído, mientras que la distancia entre el elemento cortante intermedio (7) y el tope (5) determina el grosor del epitelio (10) eliminado.The separation distance between both support plates (6) determines the width of the strip of the extracted soft tissue. For its part, the separation distance between the intermediate cutting element (7) and the distal cutting element (8) determines the thickness of the strip of connective tissue (12) removed, while the distance between the intermediate cutting element (7) and the stop (5) determines the thickness of the removed epithelium (10).
Estudios experimentales han determinado que de media el epitelio (10) bucal presenta grosores comprendidos en el intervalo de 0.2 mm a 0.3 mm, por lo que en la realización preferente del dispositivo se ha fijado dicha distancia de separación entre elemento cortante intermedio (7) y tope (5) en 0.4 mm, para de esa manera asegurar la remoción completa del epitelio (10).Experimental studies have determined that, on average, the buccal epithelium (10) has thicknesses in the range of 0.2 mm to 0.3 mm, therefore, in the preferred embodiment of the device, said separation distance has been set between the intermediate cutting element (7) and stop (5) in 0.4 mm, in order to ensure complete removal of the epithelium (10).
Dichas medidas se incluyen únicamente a modo ilustrativo y no limitativo, puesto que pueden existir variaciones debidas tanto a factores genéticos (raza, sexo, edad) como a factores ambientales (dieta, tabaquismo, existencia de prótesis, etc.)These measures are included for illustrative and non-limiting purposes only, since there may be variations due to both genetic factors (race, sex, age) and environmental factors (diet, smoking, existence of prostheses, etc.)
En la figura 3 se muestra esquemáticamente el uso del dispositivo para obtención de tejido conectivo desepitelizado. Tras la inserción previa del cabezal (2) en el tejido blando, con una penetración limitada por el tope (5), el desplazamiento de dicho dispositivo permite obtener en una sola intervención, una franja de epitelio (10) y una franja de tejido conectivo (12), de grosor homogéneo y libre de epitelio (10), lista para ser injertado. Figure 3 schematically shows the use of the device to obtain de-epithelialized connective tissue. After the previous insertion of the head (2) in the soft tissue, with a limited penetration by the stop (5), the displacement of said device allows to obtain, in a single operation, a strip of epithelium (10) and a strip of connective tissue (12), of homogeneous thickness and free of epithelium (10), ready to be grafted.
Claims (5)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201830689A ES2737524B2 (en) | 2018-07-11 | 2018-07-11 | DEEPITELIZED CONNECTIVE TISSUE EXTRACTION DEVICE |
| PCT/ES2019/070471 WO2020012048A1 (en) | 2018-07-11 | 2019-07-04 | Device for extracting de-epithelialised connective tissue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201830689A ES2737524B2 (en) | 2018-07-11 | 2018-07-11 | DEEPITELIZED CONNECTIVE TISSUE EXTRACTION DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2737524A1 ES2737524A1 (en) | 2020-01-14 |
| ES2737524B2 true ES2737524B2 (en) | 2020-06-02 |
Family
ID=69138061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES201830689A Expired - Fee Related ES2737524B2 (en) | 2018-07-11 | 2018-07-11 | DEEPITELIZED CONNECTIVE TISSUE EXTRACTION DEVICE |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES2737524B2 (en) |
| WO (1) | WO2020012048A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4221222A (en) * | 1978-06-12 | 1980-09-09 | Detsch Steven G | Medical cutting instrument |
| DE19958855C2 (en) * | 1999-12-07 | 2003-07-03 | Klaus Kasten | Handheld device for the preparation of a full-skin graft by removing layers of skin tissue |
| DE10137916A1 (en) * | 2001-08-02 | 2003-02-27 | Aesculap Ag & Co Kg | Surgical knife |
| AU2004211977A1 (en) * | 2003-02-10 | 2004-08-26 | Applied Tissue Technologies, Llc | Apparatus for dermal tissue harvesting |
| KR100798683B1 (en) * | 2007-08-27 | 2008-01-28 | 주식회사 메가젠임플란트 | Dental instrument for cutting soft tissue |
| KR100946270B1 (en) * | 2008-08-12 | 2010-03-09 | 주식회사 메가젠임플란트 | Dental instrument for cutting soft tissue |
| CN103211639B (en) * | 2013-03-19 | 2015-08-19 | 中国人民解放军第三军医大学第三附属医院 | A kind of subcutaneous fat remover |
| CN104983451A (en) * | 2015-07-10 | 2015-10-21 | 郭秀丽 | Skin transplanting device for dermatological department operations |
-
2018
- 2018-07-11 ES ES201830689A patent/ES2737524B2/en not_active Expired - Fee Related
-
2019
- 2019-07-04 WO PCT/ES2019/070471 patent/WO2020012048A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| ES2737524A1 (en) | 2020-01-14 |
| WO2020012048A1 (en) | 2020-01-16 |
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