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EP3700591A1 - Matériau composite biocompatible à introduire dans un organisme humain - Google Patents

Matériau composite biocompatible à introduire dans un organisme humain

Info

Publication number
EP3700591A1
EP3700591A1 EP18793653.9A EP18793653A EP3700591A1 EP 3700591 A1 EP3700591 A1 EP 3700591A1 EP 18793653 A EP18793653 A EP 18793653A EP 3700591 A1 EP3700591 A1 EP 3700591A1
Authority
EP
European Patent Office
Prior art keywords
composite material
textile fabric
elastomeric
layer
biocompatible composite
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.)
Withdrawn
Application number
EP18793653.9A
Other languages
German (de)
English (en)
Inventor
Karl-Heinz HEFFELS
Denis Reibel
Dirk Grafahrend
Alexandra KAUL
Yosuke KADOMAE
Guenter Germann
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP3700591A1 publication Critical patent/EP3700591A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • A61F2/20—Larynxes; Tracheae combined with larynxes or for use therewith
    • 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
    • A61L27/18—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
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    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/14—Macromolecular materials
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    • A61L27/227—Other specific proteins or polypeptides not covered by A61L27/222, A61L27/225 or A61L27/24
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    • A61L27/28—Materials for coating prostheses
    • A61L27/34—Macromolecular materials
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    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
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    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
    • A61L27/44—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
    • A61L27/48—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix with macromolecular fillers
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    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A61L27/54—Biologically active materials, e.g. therapeutic substances
    • 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
    • A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A61L27/56—Porous materials, e.g. foams or sponges
    • 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
    • A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A61L27/58—Materials at least partially resorbable by the body
    • 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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/04—Macromolecular materials
    • A61L29/044—Proteins; Polypeptides; Degradation products thereof
    • A61L29/045—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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/04—Macromolecular materials
    • A61L29/044—Proteins; Polypeptides; Degradation products thereof
    • A61L29/046—Gelatin
    • 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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/04—Macromolecular materials
    • A61L29/044—Proteins; Polypeptides; Degradation products thereof
    • A61L29/048—Other specific proteins or polypeptides not covered by A61L29/045 - A61L29/047
    • 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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/04—Macromolecular materials
    • A61L29/06—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/08—Materials for coatings
    • A61L29/085—Macromolecular materials
    • 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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/12—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
    • A61L29/126—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
    • 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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
    • A61L29/146—Porous materials, e.g. foams or sponges
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    • 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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
    • A61L29/148—Materials at least partially resorbable by the body
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    • 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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
    • A61L29/16—Biologically active materials, e.g. therapeutic substances
    • 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
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0076—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof multilayered, e.g. laminated structures
    • 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
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Definitions

  • the present invention relates to a composite material for wholly or partially introducing it into a human body and in particular for implantation in a human body.
  • the invention further relates to a method for producing the composite material and its use for producing a medical device for complete or partial
  • Biocompatibility refers to the property of materials in a biological environment adapted to the situation
  • implants have to meet high requirements because they are intended to remain there permanently or at least for a period of a few days as materials implanted in the body.
  • Medical implants have the task To support or replace body functions, while in plastic implants, the shape, possibly destroyed, body parts to be restored or changed.
  • the silicone often used in implants is basically
  • the immune system of the host body is activated after implantation and tries to resorb the foreign material. If the immune cells do not resorb due to the foreign material properties, the body begins to surround the implant with a fibrous sheath and thereby separate from the surrounding tissue. This separation is at least then of concern when the capsule of scar tissue hardens and to
  • biocompatible materials for the surface of implants that can interact with the host body. These can be bioresorbable materials that can be decomposed and metabolized by the body's own cells. When these materials are designed as support structures, cells can migrate into these structures to build new, endogenous tissue.
  • Supporting structure material is absorbed during this time. There are currently no products on the market that follow this approach. Presumably, this is because the implants would lose their function in the course of absorption.
  • the invention is based on the object
  • a biocompatible composite material for complete or partial introduction into a human body comprising at least one layer comprising an elastomeric material, and at least one disposed on this layer and the surface of the
  • Fabric bioresorbable fibers which are at least partially embedded in the position of elastomeric material.
  • the bond between the fabric and the elastomeric material may be communicated through the bioabsorbable fibers which are at least partially embedded in the layer of elastomeric material.
  • This embedding can be obtained, for example, by applying the textile fabric to an elastomeric precursor material, for example an unvulcanized silicone layer, and pressing it into it.
  • the impressions have the purpose of introducing the fibers of the textile fabric into the precursor layer.
  • the composite for example by vulcanization of the precursor to form the solidified elastomeric material and cured in its elastomeric portion.
  • elastomeric material can be a stable composite material with high
  • a high layer adhesion means that the composite material can be handled in the usual way and, for example, can be introduced into the human body without the adhesion between the elastomeric material and the textile material
  • the composite material it is advantageous for the composite material to have a surface formed from a bioresorbable fiber-containing fabric, since biocompatibility-enhancing interaction with the surrounding tissue is possible as a result.
  • Textile fabrics have a three-dimensional structure due to their fiber structure. As explained above, structured surfaces can reduce the frequency of occurrence of
  • Nonwovens are particularly preferred since the fibers are present there as a random knit and have a strong three-dimensional structuring.
  • One possible measure of the extent of the three-dimensional structuring of the surface is the average pore size of the textile fabric.
  • the textile fabric preferably has an average pore size of 50 ⁇ to 300 ⁇ , preferably from 70 to 250 ⁇ , more preferably from 100 to 200 ⁇ on.
  • the pore size is measured before introduction into the elastomeric material. It is measured according to ASTM E 1294 (1989).
  • the bioresorbable fibers may be resorbed after being introduced into the body over time. It is advantageous that the bioresorbable fibers are also present within the elastomeric layer, since in the bioresorption cavities are formed in the position of elastomeric material, comparable to a dynamically changing, three-dimensional structuring on the surface of the composite material. Over time, the layer of elastomeric material is thus provided with cavities.
  • the formation of the cavities takes place continuously, with preferably more than half, more preferably more than 75% by weight, in particular more than 90% by weight, of the textile fabric being absorbed after 60 days.
  • the layer of elastomeric material is successively to the surface layer of
  • the composite material according to the invention allows ingrowth of body tissue and consequently a stepwise replacement of the textile
  • Another advantage of the composite material according to the invention is that at least in the first time after introduction into the body by the bioresorbable coating, the surface of the elastomeric material in the body can be separated from the tissue, what its acceptance and
  • the composite material according to the invention is characterized in that it can have excellent elasticity due to the use of an elastomeric material. As a result, a good adaptation to deforming forces outside and inside the body can be ensured.
  • the high elasticity is particularly advantageous if the
  • Composite material for example, as an implant is to be introduced through the smallest possible body opening in the body. Its high elasticity allows the composite material to deform severely, for example, to be lengthened so as to be able to be introduced into the body through the small body opening.
  • the composite material is characterized by an elasticity measured according to DIN 53504 S2 at a rate of 200 mm / min from 50% to 500%, preferably from 200% to 500%, more preferably from 400% to 500%. It was surprising for the person skilled in the art that the composite material according to the invention can have such a high elasticity. In particular, it was expected that at
  • the beneficial effects come into effect the longer the time that the composite material is to remain in the human body.
  • the effects caused by the three-dimensionally structured surface become more pronounced the greater the proportion of the textile fabric on the surface of the implant.
  • the proportion of the textile fabric at the surface of the composite material is more than 50%, more preferably more than 70%, even more preferably more than 90%, and in particular 100%.
  • the above values refer to the state before introduction into the human body.
  • the bioresorbable fibers may comprise a wide variety of fiber materials.
  • the fibers comprise bioresorbable fiber materials selected from the group consisting of natural polymers, proteins, peptides, sugars, chitosan, chitin, gelatin, collagen, polyvinyl alcohol, polyvinylpyrrolidone, dextran, pullulan, hyaluronic acid, polycapolactones, polylactides, polyglycolides, polyhydroxyalkanolates, polydioxanones,
  • the fiber material consists entirely of the abovementioned materials, with customary auxiliaries, for example catalyst residues, also being present in the fiber material.
  • the fibers exclusively comprise gelatin as bioresorbable fiber material and / or consists of at least 70% by weight, and / or at least 80% by weight, and / or at least 90% by weight, and / or At least 95% by weight of gelatin, in each case based on the total weight of the bioresorbable fibers.
  • Porcine gelatin is preferred according to the invention, since these are not
  • BSE bovine spongiform encephalopathy
  • the bioresorbable fibers usually contain water.
  • the bioresorbable fibers additionally contain at least one hydrophilic additive.
  • the hydrophilic additive is selected from the group consisting of: carbomer [9003-01 -4], ethyl acetate, polymer with 1-ethenyl-2-pyrrolidinone [25086-89-9], 1-ethenyl-2-pyrrolidinone homopolymer [9003- 39-8], cellulose
  • hydroxypropylmethylether [9004-65-3], polycarbophil [9003-97-8], 1-ethylen-2-pyrrolidinone homopolymer [9003-39-8], methylcellulose (E 461), ethylcellulose (E 462), hydroxypropylcellulose (E 463 ), Hydroxypropylmethylcellulose (E 464), methylethylcellulose (E 465), sodium carboxymethylcellulose (E 466),
  • Carboxymethylcellulose cellulose acetate (e.g., available from Chisso, Eastman), cellulose acetate butyrate (e.g., available from Eastman, FMC),
  • Cellulose acetate maleate cellulose acetate phthalate (e.g., available from Eastman, FMC, Parmentier), cellulose acetate trimellitates (e.g., available from Eastman, Parmentier), cellulose fatty acid esters (cellulose dilaurate, cellulose dipalmitate, cellulose distearate, cellulose monopalmitate, cellulose monostearate,
  • pregelatinized starch dextrin [9004-53-9], cellulose, 2-hydroxyethyl ether [9004-62-0], hydroxyethylmethylcellulose [9032-42-2], cellulose, 2-hydroxypropyl ether [9004-64-2], cellulose, 2 Hydroxypropyl ether (low substituted) [9004-64-2], hydroxypropyl starch [1 13894-92-1], ethenol,
  • Polyethylene oxide polyethylene glycol.
  • hydrophilic Additives for example, in an amount of from 0.1% by weight to 30% by weight,
  • Particularly preferred according to the invention are sodium hyaluronate,
  • Hyaluronic acid polyethylene oxide and polyethylene glycol.
  • hydrophilic additives are used with them a particularly high initial wettability of, for example, less than 10 seconds, preferably less than 5 seconds, more preferably less than 2 seconds can be achieved.
  • the high initial wettability is advantageous to the textile
  • Composite material in the human body may be particularly useful if one or more drugs selected from the group consisting of antimicrobials, anesthetics, anti-inflammatory agents, Antinarbensch, antifibrotic agents, chemotherapeutic agents and leukotriene inhibitors present in and / or on the bioresorbable fibers.
  • Antimicrobials and / or antibiotics are particularly suitable for preventing infection.
  • the bioresorbable fibers may be continuous filaments or staple fibers, continuous filaments being understood to be fibers of theoretically unlimited length and staple fibers are fibers of limited length.
  • the bioresorbable fibers are formed as continuous filaments and / or staple fibers with a minimum length of 5 mm, for example of 5 mm to 10 cm. In practical
  • the textile fabric has a basis weight of from 10 to 300 g / m 2 , preferably from 50 to 200 g / m 2 , more preferably from 70 to 150 g / m 2 .
  • a sheet with these basis weights has sufficient stability to be applied wrinkle-free on a variety of layers of elastomeric material three-dimensional geometry can.
  • the textile fabric measured with a width of 20 mm can be given a maximum tensile force of at least 0.5 to 100N, preferably from 1.0 to 50N, more preferably from 2.0 to 30N. This is advantageous because a minimum maximum tensile force for the processing of the textile
  • the period of time within which the textile fabric is absorbed depends on various parameters and, among other things, on the thickness of the textile fabric. Against this background, it has proved to be expedient in most cases the textile fabric, with an average thickness of less than 2 mm, preferably from 5 to 700 nm
  • the textile fabric may in principle comprise one or more fiber layers. Particularly preferably, it comprises only one fiber layer, since adhesion problems, as often occur between multiple fiber layers, can be avoided.
  • the textile fabric can also be present in a wide variety of embodiments, for example as a woven or knitted fabric or as a nonwoven fabric.
  • Nonwovens are particularly preferred according to the invention, in particular nonwovens produced in a rotary spinning process. In rotary spinning processes nonwovens can be produced, for example, by using a fiber material
  • containing fluid which as a melt, solution
  • Dispersion or suspension may be present, the fluid spun by rotation spinning, stretched and deposited into a nonwoven. This technique can be used at low temperatures up to 60 ° C. This allows a particularly gentle processing of the biopolymers and active ingredients.
  • Nonwovens which are particularly preferred according to the invention are nonwovens, as described in WO 2008/107126 A1, WO 2009/036958 A1, EP 2 409 718 A1, EP 2 042 199 A1, EP2129339 B1, CA2682190C.
  • WO 2008/107126 A1 WO 2009/036958 A1
  • EP 2 409 718 A1 EP 2 042 199 A1
  • EP2129339 B1 EP2129339 B1
  • CA2682190C CA2682190C.
  • the layer of elastomeric material may comprise a wide variety of elastomeric materials. Of these materials, silicone elastomers, particularly medical grade silicone elastomers, are particularly preferred because they are relatively inert and do not react with the body.
  • the layer of elastomeric material preferably comprises at least 70% by weight and / or at least 90% by weight and / or at least 95% by weight of the abovementioned silicone elastomers. Most preferably, the layer of elastomeric material to 100 wt.% Of silicone elastomers medical grade, which may contain conventional additives.
  • the thickness of the layer comprising the elastomeric material may vary depending on the materials used and the intended use. As a rule, have thicknesses in the range of 100 ⁇ to 5000 ⁇ , preferably from 100 ⁇ to 4000 ⁇ more preferably from 100 ⁇ to 3000 ⁇ proven.
  • the layer of elastomeric material may in principle comprise one or more layers
  • the composite material has a
  • the carrier layer is made of a biocompatible material, since this can remain in the composite material and meets the requirements for introduction into the human body.
  • the carrier layer preferably consists of an elastomeric material, in particular silicone. It is also conceivable the use of others
  • Carrier layers such as films, plates or impression body.
  • Another object of the present invention is the formation of the composite material as a medical device to complete or partial
  • an implant is to be understood as a material implanted in the body which is to remain there permanently or at least for a period of time, for example from a few days to 10 years.
  • a particularly preferred embodiment of the invention that is
  • Composite material as a medical device for a body access in particular as a catheter, and has the following features: the layer of elastomeric material is in the form of a shell, the bioresorbable fibers having textile fabrics is arranged as a coating on the outside of the shell.
  • the entire surface of the coating can be formed, so that the aforementioned advantages can be exploited particularly efficiently.
  • the coating completely covers the outside of the envelope.
  • the soft tissue implant is shaped so that it can fill a cavity in shape and size in the human body.
  • the composite material according to the invention can in a preferred
  • the first method step comprises providing a carrier layer.
  • the carrier layer preferably consists of an elastomeric material, in particular silicone. It is also conceivable the use of others
  • the second method step comprises applying a biocompatible elastomeric precursor material, in particular unvulcanized silicone, to one side of the carrier layer.
  • a biocompatible elastomeric precursor material in particular unvulcanized silicone
  • elastomeric precursor material a wide variety of materials, such as unvulcanized and / or incompletely vulcanized silicone can be used. These materials can be converted into elastomeric materials by crosslinking in the form of vulcanization.
  • silicone in the carrier layer and an elastomeric silicone precursor material is advantageous that forms a particularly homogeneous connection between the layers, since then both layers have the same properties.
  • the third method step comprises the application of a bioresorbable fibers having textile fabric on the elastomeric precursor material such that the fibers of the fabric at least partially penetrate into the elastomeric precursor material.
  • the penetration of the fibers of the textile fabric into the elastomeric precursor material can be accomplished, for example, by pressurizing the composite of textile fabric and elastomeric precursor material.
  • the elastomeric precursor material preferably has a viscosity of 200 mPa * s to 4000 mPa * s, more preferably from 300 mPa * s to 3000 mPa * s and in particular from 500 mPa * s to 2000 mPa * s.
  • a textile fabric are preferably the above-mentioned textile
  • the fourth process step comprises crosslinking the elastomeric precursor material to an elastomeric material.
  • the crosslinking can be easily carried out by heating (vulcanization). It was surprising to the person skilled in the art that the crosslinking also works in the presence of a gelatin-containing textile fabric, since gelatin
  • Another object of the present invention is therefore the use of the composite material according to the invention for producing a
  • Medical device for complete or partial introduction into the human body in particular as an implant, for example as
  • Voice prosthesis and / or for a body access for example as a catheter or fistula adapter.
  • this also includes the medical device itself.
  • MED-6400A component A
  • MED-6400B component B
  • NuSil technology Components A and B are mixed at a weight ratio of 1: 1 at room temperature. The mixture is further processed bubble-free.
  • the resulting elastomeric precursor material is poured onto the surface of a POM plate as a support layer with an area of 225 cm 2 .
  • the elastomeric precursor material coated plate is kept level for 30 minutes to level and evaporate the solvent.
  • a gelatin fleece is placed on the surface of the coated plate.
  • the gelatin nonwoven composite and silicone coated POM sheet is produced by crosslinking the elastomeric precursor. This is done in a programmable oven with the following
  • a silicone / gelatin composite nonwoven fabric is obtained by peeling off the POM plate.
  • Tensile tests are carried out for the resultant composite material according to the invention using a tensile testing machine according to DIN 53504 S2 with a head speed of 200 mm / min.
  • FIG. 1 Result tensile test of pure silicone layer as reference FIG. 2: result of tensile test of the composite material from example 1
  • FIG. 3 Microscopic image of the surface of the composite material from Example 1 after two weeks of storage at 37 ° C. in PBS.
  • FIG. 4 Schematic cross-section of a device according to the invention
  • Fig. 5 Schematic cross-section of a device according to the invention
  • Fig.6 Microscopic view of the sectional view of a
  • FIG. 1 shows as a reference the result of a tensile test with a pure silicone layer.
  • FIG. 2 shows the result of a tensile test of the composite material from Example 1.
  • the gelatin nonwoven in the composite causes a high
  • FIG. 4 shows the schematic cross section of a device according to the invention
  • Composite material (1) comprising a layer (2) of an elastomeric
  • FIG. 5 shows the schematic cross section of a device according to the invention
  • Composite material (1) in its embodiment as a catheter.
  • the catheter has a sheath (4) of elastomeric material, here silicone.
  • elastomeric material here silicone.
  • the catheter on a bioresorbable fibers exhibiting textile fabric (3), wherein the bioresorbable fibers, the sheath (4) made of elastomeric material at least partially
  • FIG. 6 shows an electron micrograph of the sectional view of a composite material according to the invention.
  • Material here silicone, is a gelatine fleece as textile fabric

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  • Medicinal Chemistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Dermatology (AREA)
  • Engineering & Computer Science (AREA)
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  • Composite Materials (AREA)
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  • Materials For Medical Uses (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un matériau composite (1) biocompatible à introduire en partie ou en totalité dans un organisme humain, comprenant au moins une couche (2) comportant un matériau élastomère et, disposée sur cette couche (2), au moins une surface textile (3) formant la surface du matériau composite (1), la surface textile (3) présentant des fibres biorésorbables qui sont incorporées au moins en partie dans la couche (2) en matériau élastomère.
EP18793653.9A 2017-10-26 2018-10-26 Matériau composite biocompatible à introduire dans un organisme humain Withdrawn EP3700591A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017009989.8A DE102017009989A1 (de) 2017-10-26 2017-10-26 Biokompatibles Verbundmaterial zum Einbringen in einen menschlichen Körper
PCT/EP2018/079394 WO2019081700A1 (fr) 2017-10-26 2018-10-26 Matériau composite biocompatible à introduire dans un organisme humain

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EP3700591A1 true EP3700591A1 (fr) 2020-09-02

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EP18795509.1A Withdrawn EP3700592A1 (fr) 2017-10-26 2018-10-26 Implant partie molle biocompatible

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EP (2) EP3700591A1 (fr)
JP (2) JP2021500178A (fr)
CN (2) CN111278474A (fr)
BR (2) BR112020006403A2 (fr)
DE (1) DE102017009989A1 (fr)
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WO (2) WO2019081700A1 (fr)

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JP7329384B2 (ja) * 2019-08-08 2023-08-18 グンゼ株式会社 組織再生基材
CN116056663A (zh) * 2020-08-04 2023-05-02 Bvw控股公司 微结构软组织移植
EP4292618A4 (fr) * 2021-02-09 2025-01-08 Shin-Etsu Chemical Co., Ltd. Dispositif contenant de la gélatine
CN115770125A (zh) * 2021-09-08 2023-03-10 苏州诺普再生医学有限公司 一种3d打印多孔鼻部整形假体
CN120570716B (zh) * 2025-08-05 2025-11-04 四川大学华西医院 一种植入假体和义肢密封的固定装置

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WO2019081700A1 (fr) 2019-05-02
EP3700592A1 (fr) 2020-09-02
CN111315418A (zh) 2020-06-19
BR112020006394A2 (pt) 2020-09-24
BR112020006403A2 (pt) 2020-09-24
JP2021500178A (ja) 2021-01-07
WO2019081708A1 (fr) 2019-05-02
CN111278474A (zh) 2020-06-12
DE102017009989A1 (de) 2019-05-02
RU2020117044A3 (fr) 2021-11-26
JP2021500170A (ja) 2021-01-07
US20200289716A1 (en) 2020-09-17
RU2020117044A (ru) 2021-11-26
US20200289715A1 (en) 2020-09-17

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