WO2023092202A1 - Dressing for negative pressure wound therapy - Google Patents
Dressing for negative pressure wound therapy Download PDFInfo
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- WO2023092202A1 WO2023092202A1 PCT/BR2022/050168 BR2022050168W WO2023092202A1 WO 2023092202 A1 WO2023092202 A1 WO 2023092202A1 BR 2022050168 W BR2022050168 W BR 2022050168W WO 2023092202 A1 WO2023092202 A1 WO 2023092202A1
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- Prior art keywords
- wound
- dressing
- negative pressure
- fat
- therapy
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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
-
- 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
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
Definitions
- This utility model patent is applied in the medical field specifically in the industry of products for the care and treatment of wounds, including plastic surgery and other medical specialties, and refers to the arrangement applied in dressings for the application of skin grafts fat using negative pressure wound therapy (TFPN).
- TFPN negative pressure wound therapy
- TFPN can effectively contribute to reducing the size of the wound, fighting its infection and accelerating healing. With TFPN, continuous removal of exudate from the wound will be provided, edema reduction and stimulation of increased local blood flow.
- TFPN TFPN alone does not provide adequate closure of the wound.
- solutions for modifying the dressing with TFPN, in order to optimize it such as the dressing in the form of a tunnel or tunneled inside the wound for use with TFPN (tunnel dressing for NPWT), as well as the dressing with channels and internal holes in polyurethane foam, for instillation of liquids and medications on the wound under the application of TFPN.
- TFPN TFPN-derived neurotrophic factor
- biological matrices such as autologous skin grafting, acellular heterologous dermal matrix grafting, and autologous fat grafting.
- Patent BR102015028154-4 - "Dressage acting under negative pressure concomitantly with the application of liquid substances in the wound bed” - refers to the dressing (1 ) developed in a structural unit (2) based on ready-made polymer, which comprises a tight void to be filled with a hydrophobic polyurethane sponge (3) with a synthetic resin plate covered with self-adhesive tape (P) and a lateral extension (9) in polyurethane film (4) to help fix the dressing on the skin, and on one side of this unit (2) there is an inlet (5) for connecting the negative pressure (6), and on the symmetrical and opposite side a second entrance (7) for positioning the connection to the equipment with the liquid substance (8) to irrigate the wound bed (F) concomitantly with the therapeutic action of negative pressure.
- a structural unit (2) based on ready-made polymer, which comprises a tight void to be filled with a hydrophobic polyurethane sponge (3) with a synthetic resin plate covered with self-adhesive
- the present model of dressing envisages using a sculpted foam block or one with a central concavity/reservoir, shaped proportionally to the wound bed, which is already available pre-inserted in the set that makes up the dressing.
- Patent BR 202017012658-2 “Negative pressure therapy dressing” - refers to a negative pressure therapy dressing (101) comprising two base structural units (figure 6 and figure 7) that are joined together with the aid of two pressure rings (110, 106), in which this connection is guaranteed by a third clamp type ring (111).
- the first structural unit (figure 6) is equipped with a watertight void, filled with foam (103), preferably hydrophobic polyurethane with two pipes inserting one opposite the other, symmetrically.
- the second structural unit (figure 7) holds a synthetic resin plate (P) with jagged cutouts (D) and self-adhesive tape and a lateral extension in polyurethane film (109) to ensure adequate fixation in the wound bed. It differs from the present patent because it is a dressing model that does not provide space for containment and accommodation of adipose tissue aspirated within the limits of the wound to be treated. While the present model of dressing envisages using a carved foam block or with central concavity I reservoir, shaped proportionally to the wound bed, to contain adipose tissue grafted along the entire length of the wound.
- PI 0412215-1 "Wound dressing to be used under negative pressure" - is a wound care dressing for applying negative pressure wound therapy to an extremity wound, as in heel of a foot.
- the dressing comprises a fluid dispenser positioned within a fenestrated sling to form a contoured occlusive wrap to be placed over a wound at one extremity.
- a contoured porous pad is placed adjacent to or within the wound such that the contoured pad (26) is enclosed by the occlusive wrap.
- Flexible tubing is attached to or through a fluid communicating port which forms an opening to the outer layer of the occlusive wrap to allow negative pressure fluid communication to the contoured pad from a source of connected negative pressure. to an opposite end of the flexible tubing.
- Negative gauge pressure is communicated from the source, through the tube, through the fenestrations of the occlusive wrap, such that negative gauge pressure is applied to the extremity wound.
- the fluid dispenser serves to direct negative pressure from a position away from the wound site to the contoured pad at the wound site. It differs from the present one in that it is a model only of negative pressure distribution over the wound bed to be treated, with the possibility of instilling liquids or fluids, also without prediction or ability to graft or contain adipose tissue on the treated wound.
- the current dressing model provides for the use of sculpted foam block or with a central concavity / reservoir, shaped proportionally to the wound bed, which is already available pre-inserted in the set that makes up the dressing
- US20120253302 "Curative for therapy of negative pressure wounds” - refers to a wound dressing suitable for use in a negative pressure therapy system includes a cover layer adapted to establish a reservoir over a wound in which negative pressure can be maintained.
- the cover layer includes an opening through which atmospheric gases and wound exudates can pass through the cover layer.
- a vacuum port is attached to the cover layer and establishes a substantially tight seal around the opening in the cover layer.
- the vacuum port includes a hollow interior in fluid communication with the opening in the cover layer and a connector to facilitate connection to a vacuum source.
- a gasket member is affixed to the cover layer to provide a dressing that can be applied in a one-step process. It differs from the present one because it is a model only for the application and distribution of negative pressure over the treated wound bed, without additives.
- the current dressing model provides for the use of sculpted foam block or with central concavity / reservoir, shaped proportionally to the wound bed, which is already available pre-inserted in the set that makes up the dressing.
- the present dressing was developed, which refers to the modification of the dressing for the application of TFPN associated with the application of a fat graft on the wound.
- the present model of disposition applied to the dressing foresees using a sculpted polyurethane foam block or with a central concavity / reservoir, shaped proportionally to the wound bed to be applied on the wound. Since the sculpted block of polyurethane foam will occupy the area around the wound, according to the shape of the wound, and will allow a concavity/reservoir after partial removal of foam in its central portion.
- the conformation of the dressing results in a central space defined between the wound and the pre-shaped foam portion, contoured by foam, to contain adipose tissue prepared for direct grafting onto the wound bed, which corresponds to the space obtained by removing the dressing. polyurethane in the central portion of the first layer added to the ulcerated space of the wound.
- Figure 1 illustrates the exploded view of the dressing composed of successive layers.
- Figure 2 illustrates a profile cut of the arrangement of the layers of the dressing.
- Figure 3 illustrates the cross-sectional view (profile cut) of the arrangement of the layers of the dressing for the application of negative pressure therapy with fat grafting, with the foam in monobloc.
- Figure 4 illustrates the view of the sculpted monoblocks of polyurethane foam organized and aligned to cover an extensive wound in a "T" shape and allow space or central concavity to contain the fat graft along the entire length of the wound.
- Figure 5 illustrates a view of the sculpted polyurethane foam monoblocks organized and aligned to cover an extensive linear wound with an "I" shape (longitudinal axis) and allow space or central concavity to contain the fat graft along the entire wound extension.
- Figure 6 illustrates a view of the sculpted monoblocks of polyurethane foam organized and aligned to cover an extensive wound in an "L" shape and allow space or central concavity to contain the fat graft along the entire length of the wound.
- the dressing (1) is composed of the exit point (5) of the negative pressure line; monoblock (4) of polyurethane foam; protective screen (3) of rayon or vaseline gauze; models of pieces or monoblocks (6, 7, 8, 9) of sculpted polyurethane foam, with removal of its central portion and designed or organized according to the proportion or extent of the wound (to be attached to the margins of the wound (1), along with a rayon protective mesh bag or sutured vaseline gauze), (6,7,8 and 9) pieces or sculpted polyurethane foam monoblocks.
- the monoblock foam (4) must have a mesh (7) made of polypropylene or similar material, vaseline, under its entire lower extension, to protect the grafted adipose tissue (2), the mesh must be fixed or sutured around the wound, in order to obtain a pocket to retain and protect the grafted fat and the skin immediately adjacent to the wound.
- the sculpted polyurethane block (4) is applied with an adhesive plastic film to seal the environment around the wound (1), in order to avoid leaks and maintain the constant application of TFPN on the wound. Foam with a central cavity can remain on the wound for up to seven consecutive days.
- a single layer of foam will be applied corresponding to a monoblock (10), that is, in a single piece with a central cavity. Under it, apply, in the same way, to protect the skin, a vaseline polypropylene mesh (3), sutured on the margins of the wound in order to obtain a kind of bag to retain the fat (fat bag dressing or “fat bag dressing”.
Abstract
The present utility model is applied in the medical field, specifically in the wound care and treatment product industry, including plastic surgery and other medical specialities, and relates to an arrangement applied to a dressing for applying a fat graft in association with negative pressure wound therapy (NPWT).
Description
CURATIVO PARA TERAPIA DE FERIDAS COM PRESSÃO NEGATIVA DRESSING FOR NEGATIVE PRESSURE WOUND THERAPY
[01 ] A presente patente de modelo de utilidade é aplicada na área médica especificamente na indústria de produtos para cuidados e tratamento de feridas, incluindo a cirurgia plástica e outras especialidades médicas, e refere-se a disposição aplicada em curativo para aplicação de enxerto de gordura em uso de terapia de ferida com pressão negativa (TFPN). [01] This utility model patent is applied in the medical field specifically in the industry of products for the care and treatment of wounds, including plastic surgery and other medical specialties, and refers to the arrangement applied in dressings for the application of skin grafts fat using negative pressure wound therapy (TFPN).
[02] O tratamento de feridas extensas e complexas, como úlceras de decúbito, queimaduras profundas, osteomielite crônica, mediastinites, nem sempre concorre para o fechamento imediato com cirurgias e podem-se prolongar por muito tempo. A TFPN pode contribuir efetivamente na redução do tamanho da ferida, no combate a infecção desta e na aceleração da cicatrização. Com a TFPN será propiciada a contínua remoção do exsudato da ferida, a redução do edema e o estímulo ao aumento do fluxo sanguíneo local. [02] The treatment of extensive and complex wounds, such as decubitus ulcers, deep burns, chronic osteomyelitis, mediastinitis, does not always contribute to immediate closure with surgery and can last for a long time. TFPN can effectively contribute to reducing the size of the wound, fighting its infection and accelerating healing. With TFPN, continuous removal of exudate from the wound will be provided, edema reduction and stimulation of increased local blood flow.
[03] Contudo, em algumas situações específicas, somente a TFPN por si só não propicia o fechamento adequado da ferida. Existem algumas soluções para modificações do curativo com TFPN, no sentido de otimizá-lo, como o curativo em forma de túnel ou tunelizado no interior da ferida para uso com TFPN (tunnel dressing for NPWT), bem como o curativo com canais e furos internos na espuma de poliuretano, para instilação de líquidos e medicamentos sobre a ferida sob a aplicação de TFPN. [03] However, in some specific situations, only TFPN alone does not provide adequate closure of the wound. There are some solutions for modifying the dressing with TFPN, in order to optimize it, such as the dressing in the form of a tunnel or tunneled inside the wound for use with TFPN (tunnel dressing for NPWT), as well as the dressing with channels and internal holes in polyurethane foam, for instillation of liquids and medications on the wound under the application of TFPN.
[04] Outra maneira de se otimizar a TFPN na cicatrização de ferimentos é a sua associação com matrizes biológicas, como o enxerto de pele autólogo, como o enxerto de matriz dérmica heteróloga acelular e como o enxerto de gordura autóloga. [04] Another way to optimize TFPN in wound healing is its association with biological matrices, such as autologous skin grafting, acellular heterologous dermal matrix grafting, and autologous fat grafting.
[05] Contudo, para a aplicação de enxerto de gordura, torna-se necessária a modificação do curativo tradicional aplicado para TFPN, de maneira que se crie, dentro do curativo, um espaço para contenção do tecido adiposo a ser enxertado sobre o leito da ferida. [05] However, for the application of fat grafting, it is necessary to modify the traditional dressing applied for TFPN, so that a space is created within the dressing to contain the adipose tissue to be grafted on the bed of the wound.
[06] A Patente BR102015028154-4 - “Curativo de atuação sob pressão negativa concomitante a aplicação de substâncias líquidas no leito de feridas” -
refere-se a curativo (1 ) desenvolvido em uma unidade (2) estrutural base em polímero pronto, que compreende um vazio estanque a ser preenchido por esponja (3) hidrofóbica de poliuretano com placa de resina sintética recoberta com fita autocolante(P) e um prolongamento lateral (9) em filme de poliuretano (4) para auxiliar a fixação do curativo na pele, sendo que de um lado de tal unidade (2) se destaca uma entrada (5) para ligação da pressão negativa (6), e no lado simétrico e oposto uma segunda entrada (7) para posicionamento da conexão ao equipo com a substância (8) líquida a irrigar o leito da ferida (F) concomitante a ação terapêutica da pressão negativa. Difere-se da presente por ser um modelo que não prevê a colocação associada de tecido adiposo aspirado sobre a ferida a ser tratada, e não prevê um compartimento específico para contenção e acomodação da gordura, para que esta não se espalhe além dos limites da ferida. Por sua vez, o presente modelo de curativo prevê utilizar bloco de espuma esculpido ou com concavidade central / reservatório, conformado proporcional ao leito da ferida, que já vem disponibilizada pré-inserida no conjunto que compõe o curativo. [06] Patent BR102015028154-4 - "Dressage acting under negative pressure concomitantly with the application of liquid substances in the wound bed" - refers to the dressing (1 ) developed in a structural unit (2) based on ready-made polymer, which comprises a tight void to be filled with a hydrophobic polyurethane sponge (3) with a synthetic resin plate covered with self-adhesive tape (P) and a lateral extension (9) in polyurethane film (4) to help fix the dressing on the skin, and on one side of this unit (2) there is an inlet (5) for connecting the negative pressure (6), and on the symmetrical and opposite side a second entrance (7) for positioning the connection to the equipment with the liquid substance (8) to irrigate the wound bed (F) concomitantly with the therapeutic action of negative pressure. It differs from the present one because it is a model that does not foresee the associated placement of adipose tissue aspirated over the wound to be treated, and does not foresee a specific compartment for containment and accommodation of the fat, so that it does not spread beyond the limits of the wound. . In turn, the present model of dressing envisages using a sculpted foam block or one with a central concavity/reservoir, shaped proportionally to the wound bed, which is already available pre-inserted in the set that makes up the dressing.
[07] A Patente BR 202017012658-2 - “Curativo de terapia por pressão negativa” - refere-se a curativo de terapia por pressão negativa (101 ) compreendendo duas unidades estruturais base (figura 6 e figura 7) que se unem com o auxílio de dois anéis de pressão (110,106), em que essa união é garantida por um terceiro anel tipo abraçadeira (11 1 ). A primeira unidade estrutural (figura 6) é dotada de um vazio estanque, preenchido por espuma (103), preferencialmente, hidrofóbica de poliuretano com duas tubulações se inserindo uma oposta à outra, simetricamente. A segunda unidade estrutural (figura 7) detém uma placa de resina sintética (P) com recortes denteados (D) e fita autocolante e um prolongamento lateral em filme de poliuretano (109) para garantir uma fixação adequada no leito da ferida. Difere-se da presente patente por ser modelo de curativo que não prevê espaço para contenção e acomodação do tecido adiposo aspirado nos limites da ferida a ser tratada. Enquanto o presente modelo de curativo prevê utilizar bloco de espuma esculpido ou com
concavidade central I reservatório, conformado proporcional ao leito da ferida, para conter tecido adiposo enxertado em toda extensão da mesma. [07] Patent BR 202017012658-2 - "Negative pressure therapy dressing" - refers to a negative pressure therapy dressing (101) comprising two base structural units (figure 6 and figure 7) that are joined together with the aid of two pressure rings (110, 106), in which this connection is guaranteed by a third clamp type ring (111). The first structural unit (figure 6) is equipped with a watertight void, filled with foam (103), preferably hydrophobic polyurethane with two pipes inserting one opposite the other, symmetrically. The second structural unit (figure 7) holds a synthetic resin plate (P) with jagged cutouts (D) and self-adhesive tape and a lateral extension in polyurethane film (109) to ensure adequate fixation in the wound bed. It differs from the present patent because it is a dressing model that does not provide space for containment and accommodation of adipose tissue aspirated within the limits of the wound to be treated. While the present model of dressing envisages using a carved foam block or with central concavity I reservoir, shaped proportionally to the wound bed, to contain adipose tissue grafted along the entire length of the wound.
[08] A PI 0412215-1 - "Curativo para ferimento para ser utilizado sob pressão negativa" - trata-se de curativo para tratamento de ferimento para a aplicação de terapia de ferimento com pressão negativa a um ferimento de uma extremidade, tal como no calcanhar de um pé. O curativo compreende um distribuidor de fluido posicionado dentro de uma colgadura fenestrada para formar um envoltório oclusivo contornado para ser colocada sobre um ferimento em uma extremidade. Uma almofada porosa contornada é colocada adjacente ou dentro do ferimento, de maneira tal que a almofada contornada (26) é encerrada pelo envoltório oclusivo. Uma tubulação flexível é fixada em uma porta de comunicação de fluido ou através desta, o que forma uma abertura para a camada exterior do envoltório oclusivo, de modo a permitir uma comunicação de fluido de pressão negativa à almofada contornada de uma fonte da pressão negativa conectada a uma extremidade oposta da tubulação flexível. A pressão de calibre negativa é comunicada da fonte, através do tubo, através das fenestrações do envoltório oclusivo, de maneira tal que a pressão de calibre negativa é aplicada ao ferimento na extremidade. O distribuidor de fluido serve para dirigir a pressão negativa de uma posição afastada do local do ferimento para a almofada contornada no local do ferimento. Difere-se da presente por ser um modelo apenas de distribuição de pressão negativa sobre o leito de ferida a ser tratada, com a possibilidade de instilação de líquidos ou fluídos, também sem previsão ou capacidade para enxertar ou conter tecido adiposo sobre a ferida tratada. Já presente modelo de curativo prevê utilizar bloco de espuma esculpido ou com concavidade central / reservatório, conformado proporcional ao leito da ferida, que já vem disponibilizada pré-inserida no conjunto que compõe o curativo, [09] A US20120253302 - "Curativo para terapia de feridas com pressão negativa” - refere-se a curativo de ferida adequado para uso em sistema de terapia por pressão negativa inclui uma camada de cobertura adaptada para estabelecer um reservatório sobre uma ferida na qual uma pressão negativa
pode ser mantida. A camada de cobertura inclui uma abertura através da qual os gases atmosféricos e os exsudatos da ferida podem passar através da camada de cobertura. Uma porta de vácuo é fixada à camada de cobertura e estabelece uma vedação substancialmente estanque ao redor da abertura na camada de cobertura. A porta de vácuo inclui um interior oco em comunicação fluida com a abertura na camada de cobertura e um conector para facilitar a conexão a uma fonte de vácuo. Um membro de gaxeta é afixado à camada de cobertura, para fornecer um curativo que pode ser aplicado em um processo de etapa única. Difere-se da presente por ser um modelo somente para aplicação e distribuição de pressão negativa sobre o leito da ferida tratada, sem aditivos. Já presente modelo de curativo prevê utilizar bloco de espuma esculpido ou com concavidade central / reservatório, conformado proporcional ao leito da ferida, que já vem disponibilizada pré-inserida no conjunto que compõe o curativo. [08] PI 0412215-1 - "Wound dressing to be used under negative pressure" - is a wound care dressing for applying negative pressure wound therapy to an extremity wound, as in heel of a foot. The dressing comprises a fluid dispenser positioned within a fenestrated sling to form a contoured occlusive wrap to be placed over a wound at one extremity. A contoured porous pad is placed adjacent to or within the wound such that the contoured pad (26) is enclosed by the occlusive wrap. Flexible tubing is attached to or through a fluid communicating port which forms an opening to the outer layer of the occlusive wrap to allow negative pressure fluid communication to the contoured pad from a source of connected negative pressure. to an opposite end of the flexible tubing. Negative gauge pressure is communicated from the source, through the tube, through the fenestrations of the occlusive wrap, such that negative gauge pressure is applied to the extremity wound. The fluid dispenser serves to direct negative pressure from a position away from the wound site to the contoured pad at the wound site. It differs from the present one in that it is a model only of negative pressure distribution over the wound bed to be treated, with the possibility of instilling liquids or fluids, also without prediction or ability to graft or contain adipose tissue on the treated wound. The current dressing model provides for the use of sculpted foam block or with a central concavity / reservoir, shaped proportionally to the wound bed, which is already available pre-inserted in the set that makes up the dressing, [09] US20120253302 - "Curative for therapy of negative pressure wounds” - refers to a wound dressing suitable for use in a negative pressure therapy system includes a cover layer adapted to establish a reservoir over a wound in which negative pressure can be maintained. The cover layer includes an opening through which atmospheric gases and wound exudates can pass through the cover layer. A vacuum port is attached to the cover layer and establishes a substantially tight seal around the opening in the cover layer. The vacuum port includes a hollow interior in fluid communication with the opening in the cover layer and a connector to facilitate connection to a vacuum source. A gasket member is affixed to the cover layer to provide a dressing that can be applied in a one-step process. It differs from the present one because it is a model only for the application and distribution of negative pressure over the treated wound bed, without additives. The current dressing model provides for the use of sculpted foam block or with central concavity / reservoir, shaped proportionally to the wound bed, which is already available pre-inserted in the set that makes up the dressing.
[010] A fim de solucionar os problemas até então existentes, foi desenvolvido o presente curativo que se refere a modificação do curativo para aplicação de TFPN associada a aplicação de enxerto de gordura sobre a ferida. [010] In order to solve the problems that existed until then, the present dressing was developed, which refers to the modification of the dressing for the application of TFPN associated with the application of a fat graft on the wound.
[01 1 ] O presente modelo de disposição aplicada a curativo prevê utilizar bloco de espuma de poliuretano esculpido ou com concavidade central / reservatório, conformado proporcional ao leito da ferida a ser aplicada sobre a ferida. Sendo que o bloco esculpido de espuma de poliuretano ocupará a área ao redor da ferida, de acordo com a forma da ferida, e possibilitará uma concavidade/ reservatório após a remoção parcial de espuma na sua porção central. A conformação do curativo resulta que entre a ferida e a porção de espuma pré- moldada define-se um espaço central, contornado por espuma, para conter tecido adiposo preparado para enxertia direta sobre o leito do ferimento, que corresponde ao espaço obtido pela remoção do poliuretano na porção central da primeira camada somado ao espaço ulcerado da ferida. [01 1] The present model of disposition applied to the dressing foresees using a sculpted polyurethane foam block or with a central concavity / reservoir, shaped proportionally to the wound bed to be applied on the wound. Since the sculpted block of polyurethane foam will occupy the area around the wound, according to the shape of the wound, and will allow a concavity/reservoir after partial removal of foam in its central portion. The conformation of the dressing results in a central space defined between the wound and the pre-shaped foam portion, contoured by foam, to contain adipose tissue prepared for direct grafting onto the wound bed, which corresponds to the space obtained by removing the dressing. polyurethane in the central portion of the first layer added to the ulcerated space of the wound.
[012] O presente curativo por pressão negativa ora descrito apresenta as seguintes vantagens: [012] The present negative pressure dressing described herein has the following advantages:
[013] - protege a pele íntegra ao redor da ferida;
[014] - propicia a remoção do exsudato da ferida; [013] - protects the intact skin around the wound; [014] - promotes the removal of exudate from the wound;
[015] - prevê um espaço para contenção da gordura dentro dos limites da ferida; [015] - provides a space for fat containment within the limits of the wound;
[016] - não remove a gordura enxertada com sua pressão negativa; [016] - does not remove the grafted fat with its negative pressure;
[017] - compacta e estabiliza a gordura no leito da ferida, criando condição melhor para sua integração; [017] - compacts and stabilizes the fat in the wound bed, creating better conditions for its integration;
[018] - reduz a ação bacteriana sobre a gordura; [018] - reduces bacterial action on fat;
[019] - melhora a oxigenação da gordura; [019] - improves fat oxygenation;
[020] - promove neoangiogenese não só pelo efeito da pressão negativa, como também pelo propriedade dos fatores inflamatórios da gordura enxertada; [020] - promotes neoangiogenesis not only by the effect of negative pressure, but also by the property of the inflammatory factors of the grafted fat;
[021] O presente curativo poderá ser compreendido pelas figuras anexas, que é uma das formas de realização do curativo, onde: [021] This dressing can be understood by the attached figures, which is one of the embodiments of the dressing, where:
[022] A Figura 1 ilustra a vista explodida do curativo composto por sucessivas camadas. [022] Figure 1 illustrates the exploded view of the dressing composed of successive layers.
[023] A Figura 2 ilustra corte de perfil da disposição das camadas do curativo. [024] A Figura 3 ilustra a visão de secção transversal (corte de perfil) da disposição das camadas do curativo para aplicação de terapia de pressão negativa com enxerto de gordura, com a espuma em monobloco. [023] Figure 2 illustrates a profile cut of the arrangement of the layers of the dressing. [024] Figure 3 illustrates the cross-sectional view (profile cut) of the arrangement of the layers of the dressing for the application of negative pressure therapy with fat grafting, with the foam in monobloc.
[025] A Figura 4 ilustra a vista dos monoblocos esculpidos de espuma de poliuretano organizados e alinhados para cobrir ferida extensa em forma de "T" e permitir espaço ou concavidade central para conter o enxerto de gordura ao longo de toda extensão da ferida. [025] Figure 4 illustrates the view of the sculpted monoblocks of polyurethane foam organized and aligned to cover an extensive wound in a "T" shape and allow space or central concavity to contain the fat graft along the entire length of the wound.
[026] A Figura 5 ilustra vista dos monoblocos esculpidos de espuma de poliuretano organizados e alinhados para cobrir ferida extensa linear com (eixo longitudinal) em forma de "I" e permitir espaço ou concavidade central para conter o enxerto de gordura ao longo de toda extensão da ferida. [026] Figure 5 illustrates a view of the sculpted polyurethane foam monoblocks organized and aligned to cover an extensive linear wound with an "I" shape (longitudinal axis) and allow space or central concavity to contain the fat graft along the entire wound extension.
[027] A Figura 6 ilustra vista dos monoblocos esculpidos de espuma de poliuretano organizados e alinhados para cobrir ferida extensa em forma de "L" e permitir espaço ou concavidade central para conter o enxerto de gordura ao longo de toda extensão da ferida.
[028] De acordo com as Figuras 1 a 6, o curativo (1 ) é composto de ponto de saída (5) da linha de pressão negativa; monobloco (4) de espuma de poliuretano; tela de proteção (3) de rayon ou gaze vaselinada; modelos de peças ou monoblocos (6, 7, 8, 9) de espuma de poliuretano esculpidos, com remoção da sua porção central e desenhados ou organizados conforme a proporção ou extensão da ferida ( a serem acopladas nas margens da ferida (1 ), junto com uma bolsa de tela de proteção de rayon ou gaze vaselinada suturada), ( 6,7,8 e 9) peças ou monoblocos de espuma de poliuretano esculpidos. [027] Figure 6 illustrates a view of the sculpted monoblocks of polyurethane foam organized and aligned to cover an extensive wound in an "L" shape and allow space or central concavity to contain the fat graft along the entire length of the wound. [028] According to Figures 1 to 6, the dressing (1) is composed of the exit point (5) of the negative pressure line; monoblock (4) of polyurethane foam; protective screen (3) of rayon or vaseline gauze; models of pieces or monoblocks (6, 7, 8, 9) of sculpted polyurethane foam, with removal of its central portion and designed or organized according to the proportion or extent of the wound (to be attached to the margins of the wound (1), along with a rayon protective mesh bag or sutured vaseline gauze), (6,7,8 and 9) pieces or sculpted polyurethane foam monoblocks.
[029] A espuma monobloco (4) deverá ter sob toda a sua extensão inferior uma tela (7) de polipropileno ou material similar, vaselinada, para proteção do tecido adiposo enxertado (2), a tela deverá ser fixada ou suturada ao redor da ferida, de modo a se obter uma bolsa para reter e proteger a gordura enxertada e a pele logo adjacente a ferida. O bloco esculpido poliuretano (4) aplica-se um plástico filme adesivo para vedação do ambiente ao redor da ferida (1 ), para que se evitem vazamentos e consiga-se a manutenção da aplicação de TFPN de maneira constante sobre a ferida. A espuma com cavidade central poderá permanecer por até sete dias corridos sobre a ferida. [029] The monoblock foam (4) must have a mesh (7) made of polypropylene or similar material, vaseline, under its entire lower extension, to protect the grafted adipose tissue (2), the mesh must be fixed or sutured around the wound, in order to obtain a pocket to retain and protect the grafted fat and the skin immediately adjacent to the wound. The sculpted polyurethane block (4) is applied with an adhesive plastic film to seal the environment around the wound (1), in order to avoid leaks and maintain the constant application of TFPN on the wound. Foam with a central cavity can remain on the wound for up to seven consecutive days.
[030] De acordo com a figura 3, será aplicada uma única camada de espuma correspondendo a um monobloco (10), ou seja, em peça única com cavidade central. Sob o mesmo, aplica-se, da mesma maneira, para proteger a pele, uma tela (3) de polipropileno vaselinada, suturada nas margens da ferida de modo a se obter uma espécie de bolsa para se reter a gordura (curativo bolsa de gordura ou “fat bag dressing”.
[030] According to figure 3, a single layer of foam will be applied corresponding to a monoblock (10), that is, in a single piece with a central cavity. Under it, apply, in the same way, to protect the skin, a vaseline polypropylene mesh (3), sutured on the margins of the wound in order to obtain a kind of bag to retain the fat (fat bag dressing or “fat bag dressing”.
Claims
1. “CURATIVO PARA TERAPIA DE FERIDAS COM PRESSÃO NEGATIVA” caracterizado por o curativo (1 ) é composto de ponto de saída (5) da linha de pressão negativa; monobloco (4); tela de proteção (3); peças ou monoblocos (6, 7, 8, 9) esculpidos. 1. “DRESSING FOR THERAPY OF WOUNDS WITH NEGATIVE PRESSURE” characterized in that the dressing (1) is composed of the exit point (5) of the negative pressure line; monoblock (4); protective screen (3); pieces or monoblocks (6, 7, 8, 9) carved.
2. “CURATIVO PARA TERAPIA DE FERIDAS COM PRESSÃO NEGATIVA”, de acordo com a reivindicação 1 caracterizado por a espuma monobloco (4) deverá ter sob toda a sua extensão inferior uma tela (7) de polipropileno, vaselinada, para proteção do tecido adiposo enxertado (2), a tela deverá ser fixada ou suturada ao redor da ferida (1 ), de modo a se obter uma bolsa para reter e proteger a gordura enxertada e a pele logo adjacente a ferida; o bloco esculpido poliuretano (4) aplica- se um plástico filme adesivo para vedação do ambiente ao redor da ferida. 2. "CURATIVE FOR THERAPY OF WOUNDS WITH NEGATIVE PRESSURE", according to claim 1, characterized in that the monobloc foam (4) must have a polypropylene mesh (7) under its entire lower extension, vaselined, to protect the adipose tissue grafted (2), the mesh should be fixed or sutured around the wound (1), in order to obtain a bag to retain and protect the grafted fat and the skin immediately adjacent to the wound; the polyurethane sculpted block (4) is applied an adhesive plastic film to seal the environment around the wound.
3. “CURATIVO PARA TERAPIA DE FERIDAS COM PRESSÃO NEGATIVA”, de acordo com a reivindicação 1 caracterizado por ser aplicada uma única camada de espuma correspondendo a um monobloco (10), em peça única com cavidade central; sob o mesmo, aplica-se uma tela (3) de polipropileno vaselinada, suturada nas margens da ferida de modo a se obter uma espécie de bolsa para se reter a gordura (curativo bolsa de gordura ou “fat bag dressing”).
3. "CURATIVE FOR THERAPY OF WOUNDS WITH NEGATIVE PRESSURE", according to claim 1, characterized in that a single layer of foam is applied corresponding to a monoblock (10), in a single piece with a central cavity; under it, a vaseline polypropylene mesh (3) is applied, sutured to the edges of the wound in order to obtain a kind of bag to retain the fat (fat bag dressing).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR2020210236707 | 2021-11-24 | ||
| BR202021023670-7U BR202021023670U2 (en) | 2021-11-24 | DRESSING FOR NEGATIVE PRESSURE WOUND THERAPY |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023092202A1 true WO2023092202A1 (en) | 2023-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2022/050168 WO2023092202A1 (en) | 2021-11-24 | 2022-05-19 | Dressing for negative pressure wound therapy |
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| Country | Link |
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| WO (1) | WO2023092202A1 (en) |
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| WO2010120470A1 (en) * | 2009-04-01 | 2010-10-21 | Aalnex, Inc. | Systems and methods for wound protection and exudate management |
| US20120253302A1 (en) * | 2011-04-04 | 2012-10-04 | Tyco Healthcare Group Lp | Negative Pressure Wound Therapy Dressing |
| WO2018226669A1 (en) * | 2017-06-07 | 2018-12-13 | Kci Licensing, Inc. | Multi-layer wound filler for extended wear time |
| WO2018226650A1 (en) * | 2017-06-07 | 2018-12-13 | Kci Licensing, Inc. | Systems, apparatuses, and methods for negative-pressure treatment with reduced tissue in-growth |
| US20200038283A1 (en) * | 2018-08-01 | 2020-02-06 | Kci Licensing, Inc. | Soft-Tissue Treatment With Negative Pressure |
| US20200323692A1 (en) * | 2017-11-03 | 2020-10-15 | Kci Licensing, Inc. | Extended Wear-Time Dressing |
| US20200330285A1 (en) * | 2017-10-23 | 2020-10-22 | Kci Licensing, Inc. | Area management of tissue sites on articulating joints |
| WO2021102529A1 (en) * | 2019-11-26 | 2021-06-03 | Moreira Costa De Souza Gustavo | Dressing for negative pressure wound therapy |
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- 2022-05-19 WO PCT/BR2022/050168 patent/WO2023092202A1/en unknown
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| WO2010120470A1 (en) * | 2009-04-01 | 2010-10-21 | Aalnex, Inc. | Systems and methods for wound protection and exudate management |
| US20120253302A1 (en) * | 2011-04-04 | 2012-10-04 | Tyco Healthcare Group Lp | Negative Pressure Wound Therapy Dressing |
| WO2018226669A1 (en) * | 2017-06-07 | 2018-12-13 | Kci Licensing, Inc. | Multi-layer wound filler for extended wear time |
| WO2018226650A1 (en) * | 2017-06-07 | 2018-12-13 | Kci Licensing, Inc. | Systems, apparatuses, and methods for negative-pressure treatment with reduced tissue in-growth |
| US20200330285A1 (en) * | 2017-10-23 | 2020-10-22 | Kci Licensing, Inc. | Area management of tissue sites on articulating joints |
| US20200323692A1 (en) * | 2017-11-03 | 2020-10-15 | Kci Licensing, Inc. | Extended Wear-Time Dressing |
| US20200038283A1 (en) * | 2018-08-01 | 2020-02-06 | Kci Licensing, Inc. | Soft-Tissue Treatment With Negative Pressure |
| WO2021102529A1 (en) * | 2019-11-26 | 2021-06-03 | Moreira Costa De Souza Gustavo | Dressing for negative pressure wound therapy |
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