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WO2023092202A1 - Pansement pour le traitement de plaies par pression négative - Google Patents

Pansement pour le traitement de plaies par pression négative Download PDF

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Publication number
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
Authority
WO
WIPO (PCT)
Prior art keywords
wound
dressing
negative pressure
fat
therapy
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.)
Ceased
Application number
PCT/BR2022/050168
Other languages
English (en)
Portuguese (pt)
Inventor
Gustavo MOREIRA COSTA DE SOUZA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from BR202021023670-7U external-priority patent/BR202021023670U2/pt
Application filed by Individual filed Critical Individual
Publication of WO2023092202A1 publication Critical patent/WO2023092202A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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”.

Landscapes

  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Otolaryngology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Le présente brevet de modèle d'utilité trouve une application dans le domaine médical, notamment dans l'industrie des produits pour le soin et le traitement de plaies, y compris la chirurgie plastique et d'autres spécialités médicales, et concerne un agencement destiné à un pansement pour l'application d'un greffon de graisse dans le cadre d'un traitement de plaie par pression négative (TPN).
PCT/BR2022/050168 2021-11-24 2022-05-19 Pansement pour le traitement de plaies par pression négative Ceased WO2023092202A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR2020210236707 2021-11-24
BR202021023670-7U BR202021023670U2 (pt) 2021-11-24 Curativo para terapia de feridas com pressão negativa

Publications (1)

Publication Number Publication Date
WO2023092202A1 true WO2023092202A1 (fr) 2023-06-01

Family

ID=86538411

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2022/050168 Ceased WO2023092202A1 (fr) 2021-11-24 2022-05-19 Pansement pour le traitement de plaies par pression négative

Country Status (1)

Country Link
WO (1) WO2023092202A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010120470A1 (fr) * 2009-04-01 2010-10-21 Aalnex, Inc. Systèmes et procédés pour la protection d'une plaie et la gestion d'exsudat
US20120253302A1 (en) * 2011-04-04 2012-10-04 Tyco Healthcare Group Lp Negative Pressure Wound Therapy Dressing
WO2018226650A1 (fr) * 2017-06-07 2018-12-13 Kci Licensing, Inc. Systèmes, appareils et méthodes de traitement par pression négative avec croissance tissulaire réduite
WO2018226669A1 (fr) * 2017-06-07 2018-12-13 Kci Licensing, Inc. Pansement pour cavité de plaie multicouche pour duree d'utilisation prolongée
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 (fr) * 2019-11-26 2021-06-03 Moreira Costa De Souza Gustavo Pansement pour le traitement de plaies par pression négative

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010120470A1 (fr) * 2009-04-01 2010-10-21 Aalnex, Inc. Systèmes et procédés pour la protection d'une plaie et la gestion d'exsudat
US20120253302A1 (en) * 2011-04-04 2012-10-04 Tyco Healthcare Group Lp Negative Pressure Wound Therapy Dressing
WO2018226650A1 (fr) * 2017-06-07 2018-12-13 Kci Licensing, Inc. Systèmes, appareils et méthodes de traitement par pression négative avec croissance tissulaire réduite
WO2018226669A1 (fr) * 2017-06-07 2018-12-13 Kci Licensing, Inc. Pansement pour cavité de plaie multicouche pour duree d'utilisation prolongée
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 (fr) * 2019-11-26 2021-06-03 Moreira Costa De Souza Gustavo Pansement pour le traitement de plaies par pression négative

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