EP4355272A1 - Prothese biologique destinee a la reconstruction de la plaque areolo-mamelonnaire - Google Patents
Prothese biologique destinee a la reconstruction de la plaque areolo-mamelonnaireInfo
- Publication number
- EP4355272A1 EP4355272A1 EP22735379.4A EP22735379A EP4355272A1 EP 4355272 A1 EP4355272 A1 EP 4355272A1 EP 22735379 A EP22735379 A EP 22735379A EP 4355272 A1 EP4355272 A1 EP 4355272A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- prosthesis
- biological
- nipple
- section
- biological prosthesis
- 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.)
- Pending
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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/52—Mammary prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3604—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
- A61L27/362—Skin, e.g. dermal papillae
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/12—Mammary prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/22—Polypeptides or derivatives thereof, e.g. degradation products
- A61L27/24—Collagen
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3604—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3683—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix subjected to a specific treatment prior to implantation, e.g. decellularising, demineralising, grinding, cellular disruption/non-collagenous protein removal, anti-calcification, crosslinking, supercritical fluid extraction, enzyme treatment
-
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/52—Mammary prostheses
- A61F2002/526—Nipples
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
- A61F2230/0008—Rounded shapes, e.g. with rounded corners elliptical or oval
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/04—Materials or treatment for tissue regeneration for mammary reconstruction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/40—Preparation and treatment of biological tissue for implantation, e.g. decellularisation, cross-linking
Definitions
- the invention relates to a new biological prosthesis made from an animal nipple-areolar plaque, useful in particular in breast reconstruction after mastectomy.
- a mastectomy is a surgical procedure that involves removing the breast in which the tumor is located in its entirety, including the areola and the nipple. It is known that approximately 1 in 8 women will develop invasive breast cancer during her lifetime. A third of these cancers require a mastectomy. Nipple-areolar plaque (PAM) reconstruction is the final step in the post-mastectomy reconstruction journey. Different methods exist to recreate the lost anatomical portion with a risk mainly associated with a loss of projection or flattening of the nipple. It is therefore necessary to associate a prosthetic material with the surgery.
- PAM Nipple-areolar plaque
- the surgical techniques used involve autologous skin grafts for the areola and local flaps for the nipple. It can also be proposed the creation of a tattoo for the areola.
- the removal of an autologous graft necessarily implies the creation of a loss of substance on another anatomical portion, therefore potential complications with a non-guaranteed aesthetic result.
- the creation of a tattoo does not restore the lost anatomical portion.
- the reconstruction of the MAP must make it possible to better integrate the reconstructed breast into the patient's personal psychological scheme.
- a synthetic silicone prosthetic material has recently been introduced (under the name Fixnip). Complications related to the use of silicone implants in breast implants are widely described in the literature. In addition, recent restrictions (prohibition of macro-textured implants, ASIA syndrome, etc.) plead for the use of biological materials in this type of reconstruction, as well as the use of a silicone prosthetic material in surgery of the PAM does not appear to be consistent. In addition, placing subcutaneous implants presents a risk of ulceration with exposure of the implant.
- the objective of the invention is to meet this need by proposing a biological prosthesis overcoming the problems of the prior art.
- the present invention proposes using an areola-nipple plaque taken from an animal.
- Animal skin in particular porcine skin, has already been used for several years for the manufacture of biological prostheses in wall surgery and breast reconstruction.
- animal dermis for the manufacture of prostheses in the case of the reconstruction of the PAM would require many manipulations and assemblies of parts of dermis to obtain the desired shape, which seems difficult to achieve both from a technical point of view and from an economic point of view.
- the present invention relates to a biological prosthesis made from a very specific part of the animal, adapted to the shape of a human PAM, which avoids these problems.
- the invention relates to a biological prosthesis constituted in whole or in part by an areola-nipple plate belonging to the family of pigs, cattle or goats, said areola-nipple plate having been treated to allow use in the being human, preferably at least by acellularization and/or deantigenization and/or viral inactivation.
- the prosthesis according to the invention therefore comprises a flat or substantially flat section, and a protruding section preferably disposed substantially at the center of said flat section.
- such a prosthesis has a shape quite suitable for the reconstruction of the PAM in a woman since it is obtained from the anatomical section (PAM) in the animal, and this without having to manipulate and assemble different parts of the dermis. It is simple to manufacture, and being a biological prosthesis, it replaces the autologous grafts usually used in this type of surgical intervention.
- FIG. 1 represents a diagram of the prosthesis according to the invention.
- FIG. 2 represents a diagram of the removal of the part of the animal to manufacture the prosthesis according to the invention.
- FIG. 3 represents a photograph of a prosthesis according to the invention.
- acellularization within the meaning of the invention is meant the elimination of cellular elements. So that the prosthesis can be implanted in a recipient, the tissues taken from the donor animal are decellularized so as to reduce their immunogenicity. This process involves the elimination of cells from the donor animal while preserving the biological and mechanical qualities of the extracellular matrix.
- deantigenization within the meaning of the invention is meant the elimination of proteins present in the tissue of the donor animal which could not be recognized by the recipient of the prosthesis. thus causing rejection of the implant.
- the donor animal may express enzymes or proteins in the tissue which are not expressed by the recipient. It is therefore important to eliminate these elements, such as in particular the galactose epitope alpha-1,3 galactose (alpha-gai) present in the porcine species, in order to reduce the immune response after implantation in humans.
- protuberance or “protruding section” within the meaning of the invention is meant a bump-shaped projection. This protuberance corresponds to the general shape of a nipple.
- prosthesis within the meaning of the invention is meant a medical device used in surgery.
- biological prosthesis or “bioprosthesis” within the meaning of the invention, a prosthesis obtained from an animal tissue.
- the invention therefore relates to a biological prosthesis 10 as represented in FIG. 1.
- the biological prosthesis according to the invention is a biological prosthesis 10 constituted in whole or in part by an areola-nipple plate 14 of an animal belonging to the family of pigs, cattle or goats, said areola-nipple plate having been treated so as to allow use in humans, preferably by acellularization and/or deantigenization and/or viral inactivation.
- the biological prosthesis according to the invention is therefore a biological tissue corresponding to an areola-nipple plaque 14 taken from an animal belonging to the family of pigs, cattle or goats, then treated, preferably at least by acellularization and/or deantigenization and/or viral inactivation.
- the biological prosthesis 10 comprises a flat or substantially flat section 18 (it is not necessarily perfectly flat due to the natural material used), and a protruding section 16 preferably disposed at the center or substantially at the center of said section 18.
- Section 18 corresponds to the areola and section 16 to the nipple.
- Section 18 is preferably circular or oval or substantially circular or substantially oval in shape.
- the thickness e of the section 18 is between 0.5 and 4 mm, more preferably between 0.5 and 2 mm.
- the thickness e for the same prosthesis can vary and a prosthesis can have different thicknesses or else substantially the same thickness, said thicknesses being preferably between 0.5 and 4 mm, preferably between 0.5 and 2 mm.
- the thickness 12 varies according to the desired mechanical strength, because the greater the thickness, the less flexible the material. To obtain such a thickness, it may be necessary to split the dermis in the thickness, to the desired size, using sharp means such as a knife for example.
- the protruding section 16 has a height h preferably between 0.5 and 20 mm, preferably between 7 and 10 mm.
- the mean diameter D of section 18 is preferably between 10 and 60 mm, even more preferably between 15 and 50 mm. Section 18 may have a larger diameter at the time of sampling and be recut according to the desired final average diameter D.
- the mean diameter d of section 16 is preferably between 5 and 20mm, preferably between 5 and 15mm.
- the removal of the biological prosthesis according to the invention before treatment is carried out on a part of an animal belonging to the family of pigs, cattle or goats (preferably a check mark) corresponding to the ventral part of the animal comprising several nipple-areolar sections of the animal.
- the sample is preferably taken from the ventral part (abdomen and/or thorax) of one or more zones 14, each zone 14 corresponding to an areola-nipple plaque.
- Animal dermis, and in particular porcine dermis is particularly suitable because its mechanical strength allows it to be used in surgery. Furthermore, the composition of the extracellular matrix, particularly collagen, of the porcine dermis is similar to that of human beings.
- the dermis is treated, in particular by acellularization and deantigenization.
- This treatment makes it possible to eliminate in particular the cellular elements and the alpha-gai epitope which can cause an increased immune reaction and acute rejection of the implant of animal origin.
- the mechanical strength of the biological prosthesis 10 according to the invention preferably responds to the following parameters (measured according to the methods described in the US Pharmacopeia Scaffold Bovine Dermis):
- the biological prosthesis 10 according to the invention can be dried. Preferably, it is freeze-dried because this drying technique is particularly suitable for preservation of collagen which is a very temperature sensitive protein. For its use, the prosthesis must be rehydrated by any method known for this purpose.
- the biological prosthesis according to the invention can be manufactured by any suitable method.
- the sample is taken from a dead animal, just after it has been slaughtered, directly in the slaughterhouse.
- the separation of the dermis from the rest of the integument is carried out using any sharp means, such as a knife for example, preferably directly after sampling in the slaughterhouse.
- the dermis is split using any sharp means, such as a knife for example or a splitter. This step must be carried out with precision so as to preferably obtain a substantially uniform thickness over the whole of the prosthesis.
- the method may include a freeze-drying step.
- the biological prosthesis according to the invention is preferably packaged in sterile packaging.
- the biological prosthesis retains the qualities of the extracellular matrix from which it is extracted and promotes tissue integration, thus avoiding the erosion of adjacent tissues.
- the prosthesis according to the invention must not be removed, unlike synthetic prostheses. Indeed its biological nature will at worst lead to a simple resorption
- the prosthesis is used according to any suitable technique. According to one embodiment, it is used by a method comprising the implementation of the following steps:
- the invention is now illustrated by a specific example of sampling and obtaining and examples of biological prostheses according to the invention, obtained according to this method.
- Example of a process for manufacturing a prosthesis according to the invention All the PAMs of a notch are taken after slaughter and before any other processing process.
- the dermis of the MAP is then separated with a knife from the other subcutaneous anatomical elements of the MAP so as to preserve the cutaneous sheath as much as possible.
- the dermis can be split using a knife or other sharp tools over the entire lower surface and in a uniform manner without cutting into the nipple.
- the prosthesis thus obtained is then treated by various chemical treatments in order to eliminate the cellular elements and other molecules specific to the organism of the donor.
- the prosthesis is then freeze-dried for optimal conservation but can also be preserved by impregnation with an appropriate chemical solution.
- a final cut is made to obtain the desired final dimensions.
- the implants are then sterilized by conventional techniques (ETO, radiation, supercritical C02, peracetic acid).
- the PAM was taken from a sow aged 5 to 9 months and then treated according to the method described above.
- Example 2
- the PAM was taken from a sow aged 20 months and then treated according to the method described above.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Medicinal Chemistry (AREA)
- Dermatology (AREA)
- Molecular Biology (AREA)
- Botany (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Urology & Nephrology (AREA)
- Zoology (AREA)
- Biophysics (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
- Cosmetics (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2106446A FR3124076B1 (fr) | 2021-06-17 | 2021-06-17 | Prothese biologique destinee a la reconstruction de la plaque areolo-mamelonnaire |
| PCT/EP2022/066562 WO2022263631A1 (fr) | 2021-06-17 | 2022-06-17 | Prothese biologique destinee a la reconstruction de la plaque areolo-mamelonnaire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4355272A1 true EP4355272A1 (fr) | 2024-04-24 |
Family
ID=77226903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22735379.4A Pending EP4355272A1 (fr) | 2021-06-17 | 2022-06-17 | Prothese biologique destinee a la reconstruction de la plaque areolo-mamelonnaire |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20240277897A1 (fr) |
| EP (1) | EP4355272A1 (fr) |
| KR (1) | KR20240038958A (fr) |
| BR (1) | BR112023026579A2 (fr) |
| CA (1) | CA3220761A1 (fr) |
| FR (1) | FR3124076B1 (fr) |
| WO (1) | WO2022263631A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3212247B1 (fr) * | 2014-10-31 | 2021-04-07 | The Administrators of the Tulane Educational Fund | Greffes chirurgicales visant à remplacer le mamelon et l'aréole ou un épiderme endommagé |
| US20170224869A1 (en) * | 2016-02-08 | 2017-08-10 | Lifecell Corporation | Biologic breast implant |
| FR3052669B1 (fr) * | 2016-06-17 | 2018-06-15 | Meccellis Biotech | Prothese biologique destinee au traitement des hernies parastomales |
| US20210052774A1 (en) * | 2019-08-21 | 2021-02-25 | Lifecell Corporation | Fixed-shape tissue matrix and related methods |
-
2021
- 2021-06-17 FR FR2106446A patent/FR3124076B1/fr active Active
-
2022
- 2022-06-17 BR BR112023026579A patent/BR112023026579A2/pt unknown
- 2022-06-17 EP EP22735379.4A patent/EP4355272A1/fr active Pending
- 2022-06-17 KR KR1020247000627A patent/KR20240038958A/ko active Pending
- 2022-06-17 WO PCT/EP2022/066562 patent/WO2022263631A1/fr not_active Ceased
- 2022-06-17 US US18/570,730 patent/US20240277897A1/en active Pending
- 2022-06-17 CA CA3220761A patent/CA3220761A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA3220761A1 (fr) | 2022-12-22 |
| KR20240038958A (ko) | 2024-03-26 |
| FR3124076A1 (fr) | 2022-12-23 |
| WO2022263631A1 (fr) | 2022-12-22 |
| US20240277897A1 (en) | 2024-08-22 |
| FR3124076B1 (fr) | 2024-08-30 |
| BR112023026579A2 (pt) | 2024-03-05 |
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