ES2227872T3 - Cabeza de aspiracion para el tratamiento de heridas y combinacion con un paño quirurgico. - Google Patents
Cabeza de aspiracion para el tratamiento de heridas y combinacion con un paño quirurgico.Info
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- ES2227872T3 ES2227872T3 ES98941623T ES98941623T ES2227872T3 ES 2227872 T3 ES2227872 T3 ES 2227872T3 ES 98941623 T ES98941623 T ES 98941623T ES 98941623 T ES98941623 T ES 98941623T ES 2227872 T3 ES2227872 T3 ES 2227872T3
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive bandages or dressings
- A61F13/023—Adhesive bandages or dressings wound covering film layers without a fluid retention layer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B46/00—Surgical drapes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B46/00—Surgical drapes
- A61B46/20—Surgical drapes specially adapted for patients
- A61B46/23—Surgical drapes specially adapted for patients with means to retain or hold surgical implements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/912—Connectors between dressing and drainage tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B46/00—Surgical drapes
- A61B46/20—Surgical drapes specially adapted for patients
- A61B2046/205—Adhesive drapes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B46/00—Surgical drapes
- A61B46/20—Surgical drapes specially adapted for patients
- A61B46/23—Surgical drapes specially adapted for patients with means to retain or hold surgical implements
- A61B2046/236—Surgical drapes specially adapted for patients with means to retain or hold surgical implements with means for collecting drain fluid, e.g. drain tubes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/005—Auxiliary appliance with suction drainage system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Materials For Medical Uses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Adhesive Tapes (AREA)
- External Artificial Organs (AREA)
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Abstract
Una cabeza de aspiración para aplicar aspiración a una zona de herida, la cual comprende una porción (30) de reborde genéricamente plana y una pieza (35) conector tubular sobre una primera cara para conectar un tubo (106) de aspiración a una abertura (25) a través de la porción (30) de reborde hasta la otra cara; caracterizada porque la mencionada otra cara tiene salientes (32) que definen canales (33) de flujo para facilitar el flujo de fluidos hasta la mencionada abertura.
Description
Cabeza de aspiración para el tratamiento de
heridas y combinación con un paño quirúrgico.
Esta invención se refiere a cabezas de aspiración
para el tratamiento de heridas, y a la combinación de una cabeza de
aspiración con un paño quirúrgico.
Paños quirúrgicos son ampliamente utilizados en
operaciones quirúrgicas con el propósito de reducir infección y
facilitar la manipulación de la piel alrededor de las incisiones.
Normalmente, son transparentes o traslúcidos. Típicamente, constan
de una película flexible en plástico la cual está revestida de
adhesivo y la cual se aplica a la zona de la operación, antes de
realizar la incisión. Los paños quirúrgicos también se usan para
fijar dispositivos de tratamiento a pacientes tras una operación,
tales como catéteres o tubos de drenaje.
Un uso adicional, recientemente desarrollado, es
para conectar un tubo de aspiración a una herida con el propósito de
estimular la cicatrización de la herida. Dicho uso se describe en
los documentos de nuestras solicitudes PCT previas n^{os} WO
96/05873 y WO 97/18007.
Se han realizado diversas propuestas en el pasado
para diseñar el paño quirúrgico de tal forma que se facilite la
manipulación de la película pegajosa, flexible en plástico. Por
ejemplo, la patente de los Estados Unidos nº 5.437.622 describe un
paño quirúrgico el cual es un estratificado de tres materiales. El
primer material comprende una delgada película transparente en
plástico la cual está revestida de adhesivo y ésta está protegida
con una capa de papel revestido para ser retirado. La otra cara de
la película revestida de adhesivo está reforzada con una capa de
refuerzo de una película en plástico menos flexible. Las barras o
tiras de manipulación están fijadas a la película flexible en
plástico en sus bordes laterales para facilitar la manipulación de
la película flexible en plástico tras arrancar la capa protectora
retirable.
Allí donde se desee usar un paño quirúrgico
principalmente para fijar un dispositivo, tal como un catéter, a una
herida tras una operación o para un tratamiento de larga duración,
no es adecuado que el cirujano o la enfermera tenga que adaptar un
paño quirúrgico estándar a este propósito. Será más adecuado tener
un paño quirúrgico que sea adecuado, sin adaptación, para acomodar
el dispositivo de tratamiento.
Un aspecto de la presente invención se dirige a
resolver este problema. Un segundo aspecto proporciona un paño
quirúrgico y una cabeza de aspiración combinados para aplicar
aspiración a una zona de herida y para facilitar la aplicación de
terapia con presión negativa.
De acuerdo con el segundo aspecto de la presente
invención se proporciona un paño quirúrgico el cual comprende una
delgada película flexible revestida de adhesivo y una capa de
refuerzo aplicada a la cara opuesta del revestimiento adhesivo,
siendo la capa de refuerzo una película en plástico la cual es más
gruesa o menos flexible que la mencionada película revestida de
adhesivo, y una capa protectora retirable aplicada al revestimiento
adhesivo, teniendo el paño una abertura a través de al menos la
película de refuerzo y revestida de adhesivo para permitir, durante
el uso, acceso a la zona de herida, teniendo un primer extremo del
paño barras de manipulación no revestidas de adhesivo para separar
la película revestida de adhesivo de la capa protectora, y en el
cual la capa protectora comprende una tira separada que se extiende
paralela al primer borde del paño, y la cual protege el
revestimiento adhesivo en la región de la abertura y porta un ala
que solapa la porción contigua de la capa protectora, constituyendo
la mencionada ala un mango para facilitar la retirada de la
mencionada tira antes de ser usada. Preferiblemente, las barras de
manipulación no revestidas de adhesivo están posicionadas en bordes
laterales opuestos del paño.
En la práctica, los paños quirúrgicos pueden ser
fabricados laminando una película flexible revestida de adhesivo,
tal como una película de poliuretano, a una capa protectora
retirable, tal como un papel silicionizado. Se puede aplicar una
capa de refuerzo de material plástico más grueso, por ejemplo una
poliolefina tal como polietileno, a la cara no revestida de adhesivo
de la película flexible, de tal forma que se produce un laminado de
tres capas. Estos laminados se producen con una anchura sustancial
y pueden ser cortados en tiras longitudinalmente hasta la anchura
deseada y, a continuación, lateralmente hasta formar paños del
tamaño deseado.
Tras cortar en tiras hasta la anchura deseada,
las barras de manipulación se aplican normalmente a las capas
revestidas de adhesivo en uno o en ambos bordes laterales para
facilitar la separación de la capa protectora retirable. Aunque se
podría cortar una abertura en la posición deseada a través de las
capas para acomodar un catéter o un dispositivo tal como los
descritos en nuestras aplicaciones mencionadas en lo que antecede,
es difícil manipular la película muy plegable y adhesiva una vez
que la capa retirable ha sido arrancada.
Aunque la capa de refuerzo mejora de algún modo
las características de manipulación, no es una respuesta completa al
problema. Sin embargo, las características de manipulación se
mejoran sustancialmente al proporcionar una capa protectora la cual
está en al menos dos partes, una de las cuales está en forma de una
tira, por ejemplo una que se extiende en paralelo con los bordes
laterales del paño, y que cubre la zona periférica alrededor de la
abertura a través del paño. Al proporcionar un ala sobre esta parte
de la capa retirable, puede ser arrancada inicialmente de tal forma
que el paño se posiciona en primer lugar alrededor del dispositivo
el cual se pasa a través de la abertura, y, a continuación, la
parte restante de la capa protectora retirable se arranca para
adherir el paño a la piel del paciente alrededor de la zona a ser
tratada.
En una forma preferida de la invención, en la
cual la terapia con presión negativa se aplica a una zona de herida,
el paño quirúrgico descrito en lo que antecede se combina con una
cabeza de aspiración que tiene una pieza conector la cual esta
adaptada para ser conectada a un tubo de aspiración. De este modo,
en esta realización la cabeza de aspiración se puede adherir a la
piel del paciente en la zona de la herida tras retirar la tira de
capa protectora retirable, a continuación, la parte restante fijada
a la piel del paciente. De este modo, la cabeza de aspiración se
mantiene firmemente en su sitio y, al mismo tiempo, sella la cabeza
de aspiración hasta la zona de herida e impide fugas de aire
procedentes de la atmósfera al interior de la zona de herida.
La invención también incluye una cabeza de
aspiración que tiene un diseño que facilita la aspiración de fluido
desde una zona de herida.
De acuerdo con el primer aspecto de la invención,
por lo tanto, se provee una cabeza de aspiración para aplicar
aspiración a una zona de herida la cual comprende una porción de ala
y una pieza conector sobre una primera cara, para conectar un tubo
de aspiración a una abertura a través de la porción de reborde hasta
la otra cara, teniendo la mencionada otra cara salientes que definen
canales de flujo que facilitan el flujo de fluido hacia la
mencionada abertura.
Preferiblemente, la cabeza de aspiración descrita
en lo que antecede se combina con un paño quirúrgico, comprendiendo
el paño una delgada película flexible en plástico revestida de
adhesivo, y la pieza conector tubular se extiende a través de una
abertura en la película en plástico con el revestimiento adhesivo
adherido a la mencionada primera cara de la porción de reborde.
Preferiblemente, la cabeza de aspiración se usa
conjuntamente con un soporte flexible de espuma de celda abierta de
tal forma que una superficie del soporte flexible de espuma está
colocado en contacto con una zona de herida y la cabeza de
aspiración está aplicada a la otra superficie del soporte flexible
de espuma. En el caso de heridas profundas la espuma puede estar
conformada y colocada de tal forma que esté empaquetada en la
cavidad de herida como se describe en nuestras solicitudes PCT
citadas en lo que antecede. De acuerdo con otra técnica, la cual es
particularmente aplicable a heridas superficiales, el soporte
flexible de espuma puede ser un soporte flexible relativamente
delgado el cual se coloca sobre la herida. La cabeza de aspiración
se coloca en contacto con la cara abierta del soporte flexible de
espuma y el paño se aplica sobre la cabeza de aspiración para fijar
el conjunto a la piel del paciente.
Se pueden usar diversos tipos de espumas de celda
abierta como se describe en nuestras solicitudes PCT citadas en lo
que antecede. La espuma puede ser una espuma de poliuretano, pero se
prefieren espumas de acetato de polivilino (pva), especialmente
cuando se usan como un soporte flexible el cual se coloca sobre la
herida. Éstas son en algún grado hidrófilas, lo que parece exhibir
propiedades de confort beneficiosas al ser aplicadas a la piel. La
cicatrización de la herida se estimula mediante el mantenimiento de
condiciones de humedad en la zona de herida, y esto se facilita
usando una espuma hidrófila.
Características y ventajas adicionales de la
presente invención serán evidentes a partir de la siguiente
descripción y de los dibujos que se acompañan, de ejemplos no
limitativos de acuerdo con la invención.
Haciendo referencia a los dibujos que se
acompañan:
la figura 1 representa un diseño convencional de
paño quirúrgico;
la figura 2 representa una variación en el diseño
de las barras de manipulación en un extremo del paño mostrado en la
figura 1;
la figura 3 es una vista similar a la figura 1 de
una paño quirúrgico de acuerdo con la invención;
la figura 4 es una vista en planta del paño
quirúrgico mostrado en la figura 3;
la figura 5 es una vista en planta por debajo de
una cabeza de aspiración de acuerdo con la invención; y
la figura 6 es un alzado lateral de la cabeza de
aspiración mostrada en la figura 5;
la figura 7 es una vista similar a la figura 6
pero muestra la cabeza de aspiración afirmada a una superficie de
pile con el paño y con un soporte flexible de espuma situado entre
la cabeza y la superficie de piel.
La figura 8 es una vista en perspectiva del paño
con una porción de tira central de la hoja protectora en el
transcurso de la retirada, y
Las figuras 9(a)\sim9(c)
ilustran las etapas de fijar el conjunto de vestir a una zona de
herida sobre la pierna de un paciente y fijar un conjunto de presión
negativa.
Haciendo referencia a las figuras 1 y 2 de los
dibujos que acompañan, un estratificado convencional para usar como
paño quirúrgico comprende una delgada película 1 flexible y
transparente en plástico la cual está revestida de adhesivo sobre
una cara 2, normalmente con un adhesivo de gran pegajosidad sensible
a la presión, y está protegido con una capa 3 retirable. La delgada
película en plástico es convenientemente de poliuretano pues
transmite presión. La capa 3 es considerablemente más gruesa que la
película 1 y está revestida sobre la superficie contigua al adhesivo
con un material retirable tal como una silicona para facilitar el
arrancado de la película revestida de adhesivo.
Con el fin de facilitar la retirada de la
película revestida de adhesivo antes del uso del dispositivo, las
barras 4 de manipulación se unen por cada extremo a la película 1
revestida de adhesivo. De este modo, manteniendo sujetas una de las
barras 4, la capa 3 protectora puede ser arrancada y la cara de
adhesivo aplicada a la piel del paciente. Para facilitar la
manipulación de la delgada película flexible, se aplica
frecuentemente una película 5 de refuerzo en plástico a la cara
libre de la película 1 en plástico. Ésta también es genéricamente
transparente o traslúcida. La película 5 preferiblemente no está
pegada con adhesivo a la película 1, sino que permanece en contacto
debido a fuerzas electrostáticas o debido al estrecho contacto
entre las dos superficies de conformado de la película 1 y película
5.
Normalmente, el cirujano o la enfermera querrá
arrancar la capa 5 protectora una vez que la película 1 ha sido
correctamente colocada sobre la piel del paciente y esto se puede
facilitar haciendo cortes 6 parciales a través de las películas 1 y
5, de tal forma que a medida que la barra 4 de manipulación se
retira hacia arriba desde la piel del paciente, la película 1
adhesiva permanece adherida al paciente, mientras los cortes 6
parciales causan separación de la película flexible desde la
película 5 de refuerzo. Se pueden proporcionar las barras 7 de
refuerzo para mantener los bordes laterales de la película 5 de
refuerzo y de la película 1 juntos con sus partes principales.
Una disposición alternativa se muestra en la
figura 2, en la cual se proporciona la película 5 de refuerzo con
una barra 14 de manipulación separada de solapado para facilitar su
retirada de la película 1 flexible.
Detalles adicionales de la confección y de la
fabricación de paños quirúrgicos se dan en la patente de los
Estados Unidos 5.437.622 y en la solicitud de patente europea nº
0161865 y en la técnica anterior a que se hace referencia en la
presente memoria.
Haciendo referencia a las figuras 3 y 4, el paño
quirúrgico de esta invención comprende una película 20 externa
protectora, estratificada a una delgada película 21 flexible. La
película 21 flexible incluye una capa revestida de adhesivo la cual
está protegida con un material 24 en lámina revestido de liberador.
Los bordes laterales de la película 21 flexible están dotados de
barras 23 de manipulación. Hasta ahora, el diseño es esencialmente
el mismo que el mostrado en las figuras 1 y 2.
El paño de la presente invención difiere del paño
mostrado en las figuras 1 y 2 en que una abertura 25 está cortada a
través de la capa 20 de refuerzo y a través de la capa 21 flexible.
La otra diferencia comparada con los paños de la técnica anterior es
que la capa protectora liberable está formada en al menos dos
secciones.
En las realizaciones mostradas en las figuras 3 y
4, la porción central de la capa retirable comprende una tira 26,
que tiene alas 27 las cuales solapan las porciones restantes por
fuera de la capa retirable. El propósito de esto es permitir que la
tira 26 central sea retirada primero, sin molestar las porciones
restantes de la capa retirable. El paño puede ser colocado alrededor
de la zona de herida y, si se desea, un dispositivo de aspiración u
otro dispositivo de tratamiento se puede pasar a través de la
abertura 25 y afirmado a la piel del paciente con las zonas
periféricas expuestas de película revestida de adhesivo.
Un ejemplo de un dispositivo para aplicar
aspiración a la zona de herida se ilustra en las figuras 5, 6 y
7.
Haciendo referencia a estas figuras, la cabeza de
aspiración comprende una porción 30 de reborde que tiene un borde 31
ahusado, y un perfil el cual puede tener cualquier forma deseada
pero que genéricamente está redondeado en sus bordes. Sobre la cara
del reborde 30 que se pretende para entrar en contacto con la piel
del paciente o con un soporte flexible de espuma hay formada una
serie de salientes 32 la cual está distribuida sobre la superficie
del reborde separado de la porción 31 de borde periférico. El
propósito de estos salientes es el de proporcionar canales 33 de
fluido que faciliten el flujo de fluidos procedentes de cualquier
punto del reborde hasta un punto 34 central, desde el cual se
pretende aplicar aspiración. La cabeza de aspiración incluye un
conector 35 situado por encima de la abertura 34, teniendo un
extremo 36 tubular adaptado para recibir y conectar un catéter. El
extremo tubular puede tener una porción ahusada hacia afuera para
facilitar la alimentación a un catéter en el interior del conector.
La superficie 37 superior de la cabeza de aspiración tiene una
superficie sustancialmente suave.
Durante el uso, la porción 35 conector está
dimensionada de tal forma que ésta se extiende a través de la
abertura 25 en el paño quirúrgico mostrado en las figuras 3 y 4,
con la superficie adhesiva alrededor de la abertura pegada a la
superficie 37 suave del reborde 30. La cabeza de aspiración puede
estar empaquetada en este estado con el paño quirúrgico de tal forma
que durante el uso, la banda 26 se retira tirando de los mangos 27
exponiendo, de este modo, la superficie de adhesivo en la vecindad
de, y rodeando, la cabeza de aspiración. La cabeza de aspiración
puede fijarse, entonces, en la deseada posición sobre la herida del
paciente, y, a continuación, la porción restante de la película
protectora ser retirada para fijar el paño al paciente. El reborde
30 de la cabeza de aspiración puede ser en cierto modo oval como se
muestra en la figura 5, y tener dimensiones como se indica en esta
figura, es decir, una dimensión mayor de aproximadamente 95 mm y
una dimensión pequeña de aproximadamente 70 mm. Alternativamente,
el reborde puede ser circular y ser menor en vista en planta. Por
ejemplo, el diámetro de una cabeza de aspiración circular puede
tener un diámetro entre aproximadamente 30 a 50 mm, por ejemplo ser
de aproximadamente 40 mm. Se ha descubierto que el reborde de cabeza
de aspiración no debería solapar la zona de la herida. De este modo,
en el caso de heridas más pequeñas, está indicada una cabeza de
aspiración menor.
La figura 7 muestra la cabeza de aspiración
fijada a una zona 71 de herida de un paciente 70. La cabeza de
aspiración se presiona para que tenga un firme contacto con una
espuma 73 flexible de celda abierta la cual se presiona para que
entre en contacto con la zona 71 de herida. La cabeza de aspiración
y el soporte flexible de espuma se presionan para que entren en
contacto con la zona de herida mediante un paño 20 quirúrgico que
tenga una superficie 74 adhesiva. La superficie adhesiva se une a
la piel del paciente fuera de la periferia del soporte flexible de
espuma y a la cabeza de aspiración. También está unida a la
superficie 37 superior de la cabeza de aspiración. En el paño está
formada una abertura para permitir que la porción 35 conector se
extienda hacia arriba a través del paño. Con el fin de advertir del
peligro de que se están encajando tubos de catéter incorrectos al
conector 35, el último puede tener una sección transversal a medida
o un saliente interno, tal como un nervio o una chaveta el cual
colabora con una ranura o chavetero correspondiente en el catéter.
Alternativamente, el catéter puede estar moldeado con un saliente o
nervio longitudinal el cual colabora con una ranura correspondiente
o chavetero en la abertura del conector 35.
El soporte flexible de espuma puede estar
empaquetado en un bolsillo en plástico, esterilizado por irradiación
gama y suministrado en la misma caja o en otras unidades de
empaquetado con la cabeza de aspiración y el paño.
Las figuras 8 y 9 (a)\sim(b)
ilustran el modo en el cual la combinación de paño/cabeza de
aspiración se coloca sobre la piel de un paciente. En la figura 8,
una lámina 101 de respaldo que tiene una superficie revestida se
retira en la primera etapa de la cara 102 adhesiva del paño expuesto
a la cara del conector 30. Un soporte flexible 103 de espuma está
situado sobre la zona de herida y el paño se coloca sobre el soporte
flexible de espuma, estando adherido el paño a la piel por encima y
por debajo del soporte flexible (figura 9a). Las tiras 104 y 105
laterales protectoras se retiran a su vez del paño y el conjunto se
adhiere a la piel (figuras 9[b] y 9[c]). Por último,
la boca 36 de descarga se conecta a un tubo 106 el cual se conecta
entonces a una fuente de aspiración, por ejemplo una bomba, como se
describe en lo que antecede en nuestra solicitud PCT, con el fin de
aplicar presión negativa a la herida. El conjunto de cabeza de
aspiración y paño se muestra en la figura 8, con la superficie 37
suave adherida al paño, convenientemente empaquetado en una bolsa o
saco en plástico de fácil apertura y esterilizado para su uso
inmediato.
Claims (6)
1. Una cabeza de aspiración para aplicar
aspiración a una zona de herida, la cual comprende una porción (30)
de reborde genéricamente plana y una pieza (35) conector tubular
sobre una primera cara para conectar un tubo (106) de aspiración a
una abertura (25) a través de la porción (30) de reborde hasta la
otra cara; caracterizada porque la mencionada otra cara tiene
salientes (32) que definen canales (33) de flujo para facilitar el
flujo de fluidos hasta la mencionada abertura.
2. Una cabeza de aspiración según la
reivindicación 1, la cual se combina con un paño quirúrgico,
comprendiendo el paño una delgada película (21) flexible en plástico
revestida de adhesivo, extendiéndose la pieza (35) conector tubular
a través de una abertura en la película (21) en plástico con el
revestimiento adhesivo adherido a la mencionada primera cara de la
porción (30) de reborde.
3. Una combinación de cabeza de aspiración y de
paño quirúrgico según la reivindicación 2, en la cual la película
(21) revestida de adhesivo está reforzada con una segunda película
(20) en plástico, la cual es más gruesa o menos flexible que la
mencionada película revestida de adhesivo.
4. Una combinación de cabeza de aspiración y de
paño quirúrgico según las reivindicaciones 2 ó 3, en la cual el
revestimiento de adhesivo sobre la mencionada película flexible está
protegido con una capa (24) protectora retirable, que cubre la zona
del adhesivo, comprendiendo la mencionada capa retirable una tira
separada que protege el revestimiento adhesivo en la vecindad de la
cabeza de aspiración y portando la mencionada tira un ala (27) que
solapa una porción contigua de la capa liberable y que construye un
mango para facilitar la retirada de la mencionada tira antes de ser
usada.
5. Un conjunto para ser usado con una fuente de
aspiración para estimular la cicatrización de heridas el cual
comprende un soporte flexible de espuma, una espuma de polímero
flexible de celda abierta y una cabeza de aspiración y paño según la
reivindicación 4.
6. Una cabeza de aspiración según la
reivindicación 1 combinada con un paño quirúrgico el cual comprende
una delgada película (21) flexible en plástico revestida de adhesivo
y una capa (20) de refuerzo aplicada a la cara opuesta del
revestimiento de adhesivo, siendo la capa de refuerzo una película
en plástico que es más gruesa o menos flexible que la mencionada
película revestida de adhesivo, y una capa (24) protectora retirable
aplicada al revestimiento adhesivo, teniendo el paño una abertura
(25) a través de al menos la película de refuerzo y película
revestida de adhesivo para permitir, durante el uso, acceso a una
zona de herida, teniendo al menos un primer borde del paño una barra
(23) de manipulación no revestida de adhesivo para separar la
película revestida de adhesivo de la capa protectora, y en la cual
la capa protectora comprende una tira separada que se extiende
paralela respecto del primer borde del paño, y la cual protege el
revestimiento adhesivo en la región de la abertura (25) y porta al
menos un ala (27) que solapa la porción contigua de la capa
protectora, constituyendo la mencionada ala un mango para facilitar
la retirada de la mencionada tira antes de ser usada.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9719520.0A GB9719520D0 (en) | 1997-09-12 | 1997-09-12 | Surgical drape and suction heads for wound treatment |
| GB9719520 | 1997-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2227872T3 true ES2227872T3 (es) | 2005-04-01 |
Family
ID=10819033
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES04009482T Expired - Lifetime ES2258748T3 (es) | 1997-09-12 | 1998-09-09 | Paño quirurgico. |
| ES98941623T Expired - Lifetime ES2227872T3 (es) | 1997-09-12 | 1998-09-09 | Cabeza de aspiracion para el tratamiento de heridas y combinacion con un paño quirurgico. |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES04009482T Expired - Lifetime ES2258748T3 (es) | 1997-09-12 | 1998-09-09 | Paño quirurgico. |
Country Status (13)
| Country | Link |
|---|---|
| US (5) | US6345623B1 (es) |
| EP (4) | EP1018967B1 (es) |
| JP (1) | JP4169243B2 (es) |
| KR (1) | KR100516288B1 (es) |
| AT (3) | ATE454857T1 (es) |
| AU (1) | AU745271B2 (es) |
| CA (1) | CA2303085C (es) |
| DE (3) | DE69825767T2 (es) |
| DK (2) | DK1018967T3 (es) |
| ES (2) | ES2258748T3 (es) |
| GB (3) | GB9719520D0 (es) |
| PT (1) | PT1440667E (es) |
| WO (1) | WO1999013793A1 (es) |
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1997
- 1997-09-12 GB GBGB9719520.0A patent/GB9719520D0/en not_active Ceased
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1998
- 1998-09-09 EP EP98941623A patent/EP1018967B1/en not_active Expired - Lifetime
- 1998-09-09 JP JP2000511426A patent/JP4169243B2/ja not_active Expired - Lifetime
- 1998-09-09 AT AT05112409T patent/ATE454857T1/de active
- 1998-09-09 GB GB9819678A patent/GB2329127B/en not_active Expired - Lifetime
- 1998-09-09 EP EP04009482A patent/EP1440667B1/en not_active Expired - Lifetime
- 1998-09-09 EP EP05112409A patent/EP1637088B1/en not_active Revoked
- 1998-09-09 AT AT98941623T patent/ATE273666T1/de active
- 1998-09-09 ES ES04009482T patent/ES2258748T3/es not_active Expired - Lifetime
- 1998-09-09 ES ES98941623T patent/ES2227872T3/es not_active Expired - Lifetime
- 1998-09-09 EP EP09181022.6A patent/EP2172164B2/en not_active Expired - Lifetime
- 1998-09-09 AU AU89934/98A patent/AU745271B2/en not_active Expired
- 1998-09-09 DE DE69825767T patent/DE69825767T2/de not_active Expired - Lifetime
- 1998-09-09 DK DK98941623T patent/DK1018967T3/da active
- 1998-09-09 CA CA002303085A patent/CA2303085C/en not_active Expired - Lifetime
- 1998-09-09 PT PT04009482T patent/PT1440667E/pt unknown
- 1998-09-09 DE DE69841451T patent/DE69841451D1/de not_active Expired - Lifetime
- 1998-09-09 DK DK04009482T patent/DK1440667T3/da active
- 1998-09-09 AT AT04009482T patent/ATE318550T1/de active
- 1998-09-09 KR KR10-2000-7002640A patent/KR100516288B1/ko not_active Expired - Lifetime
- 1998-09-09 WO PCT/GB1998/002713 patent/WO1999013793A1/en not_active Ceased
- 1998-09-09 DE DE69833579T patent/DE69833579T2/de not_active Expired - Lifetime
- 1998-09-09 GB GB9909575A patent/GB2333965B/en not_active Expired - Lifetime
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1999
- 1999-07-09 US US09/350,581 patent/US6345623B1/en not_active Expired - Lifetime
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2001
- 2001-04-16 US US09/835,500 patent/US6553998B2/en not_active Expired - Lifetime
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2003
- 2003-02-13 US US10/366,227 patent/US6814079B2/en not_active Expired - Lifetime
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2004
- 2004-09-09 US US10/937,680 patent/US7117869B2/en not_active Expired - Lifetime
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2006
- 2006-10-10 US US11/545,321 patent/US7886746B2/en not_active Expired - Fee Related
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