WO2011105663A1 - 무세포 진피 기질의 제조 방법 및 그로부터 제조된 무세포 진피 기질 - Google Patents
무세포 진피 기질의 제조 방법 및 그로부터 제조된 무세포 진피 기질 Download PDFInfo
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- WO2011105663A1 WO2011105663A1 PCT/KR2010/003783 KR2010003783W WO2011105663A1 WO 2011105663 A1 WO2011105663 A1 WO 2011105663A1 KR 2010003783 W KR2010003783 W KR 2010003783W WO 2011105663 A1 WO2011105663 A1 WO 2011105663A1
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- skin
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- cryoprotectant
- sucrose
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- 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
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- 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
- A61L27/3687—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 characterised by the use of chemical agents in the treatment, e.g. specific enzymes, detergents, capping agents, crosslinkers, anticalcification agents
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- 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
- A61L27/60—Materials for use in artificial skin
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- 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 present invention relates to a method for producing an acellular dermal matrix (ADM) and to an acellular dermal matrix prepared therefrom, and more particularly, based on glycerol, propylene glycol, and a basic solvent or solution.
- ADM acellular dermal matrix
- Cross-linking is added to make a cryoprotectant, and the solution is penetrated into the skin from which the cells in the epidermis and dermis have been removed, and then freeze-dried to prepare a cell-free dermal matrix.
- Skin is the largest organ covering the entire human body surface, preventing the loss of body fluids and the influx of harmful substances and microorganisms from outside, and protecting the body from physical and chemical stimuli.
- Patients with severe skin loss due to severe burns, trauma, epithelial cancer resection and skin diseases, etc. have a protective function that prevents infection and loss of fluids, and does not leave scars on the patient's wounds. Prevent serious contractions that may occur during the process.
- Autograft is the most ideal of these methods, but in the case of a wide range of burns, there is a restriction on the area where tissue can be secured, and there is a difficulty that the collection site remains as a new wound site. Allografts help the movement and healing of cells around the wound rather than permanent engraftment.
- the dead epidermis and dermis layer are first removed, and the acellular dermis is removed by removing the epidermis by using donor carcass skin to eliminate the immune rejection reaction. Perform a skin transplant using. The cultured keratinocytes then complete the intact skin thereon. The finished skin contains a basement membrane layer, which can play a role in protecting our body from external harmful substances such as actual skin.
- U. S. Patent No. 5,336, 616 discloses a method for preparing collagen-based tissue for transplantation.
- the composition of the cryoprotectant does not sufficiently penetrate into the collagen tissue, and the low concentration of sugar component does not sufficiently release the moisture in the tissue due to the nature of the collagen tissue that absorbs much water.
- ice crystals form in the tissue. These ice crystals create many holes in the tissues during the drying process, destroy collagen tissues, and break down quickly after transplantation, so that they do not retain their shape and are absorbed.
- the technical problem of the present invention is to provide a method for producing a new cell-free dermal matrix that can enhance the stability of tissues and minimize changes in biological properties more effectively than conventional methods.
- the present invention to achieve the above object
- cryoprotectant penetrates the skin from which the cells in the epidermis and dermis have been removed;
- the present invention also provides an acellular dermal matrix prepared by the above method of treatment.
- allogeneic skin is removed cells in the dermis after the epidermis is removed to eliminate the immune rejection reaction.
- Removal of cells in the epidermis and dermis can be carried out according to various methods known in the art, without particular limitation. Removal of the epidermis may be carried out, for example, by treatment with an NaCl solution or an enzyme such as trypsin, collagenase or dispase. Removal of cells in the dermis can be performed, for example, by treatment with Triton X100, Tween 20, Tween 40, Tween 60, Tween 80 or SDS (sodium dodecylsulfate).
- the basic component of the cryoprotectant glycerol, propylene glycol, and a basic solvent or solution are used.
- the basic solvent or solution means a solvent or solution which is a base when preparing a cryoprotectant, and a distilled water, normal saline, buffer solution or animal cell culture medium used for treating animal cells may be used. Can be.
- the buffer solution may be used without particular limitation as long as it is used in the treatment of animal cells in the art.
- the buffer solution that can be used in the present invention is, for example, phosphate buffered saline (PBS), HBSS (Hank's balanced salt solution), TBS (Tris buffered saline), TAPS (N-Tris (hydroxymethyl) methyl-3 -aminopropanesulfonic acid) buffer, Bicine (N, N-Bis (2-hydroxyethyl) glycine) buffer, HEPES (4- (2-hydroxyethyl) -1-piperazineethanesulfonic acid) buffer, TES (N-Tris (hydroxymethyl) methyl-2-aminoethanesulfonicd acid (PIPES) buffer, piperazine-N, N'-bis (2-ethanesulfonic acid) buffer, cacodylate buffer, MES (2- (N-morpholino) ethanesulfonic acid) Buffer cells, etc.
- PBS phosphate buffered saline
- HBSS Hank's balanced salt solution
- the animal cell culture medium may be any medium known in the art.
- the animal cell culture medium that may be used in the present invention may be, for example, MEM ( Minimum Essential Media, DMEM (Dulbecco's Modified Eagle Media), RPMI 1640, IMDM (Iscove's Modified Dulbecco's Media), Defined Keratinocyte-SFM (without Bovine Pituitary Extract (BPE), Keratinocyte-SFM (with BPE), KnockOut D-MEM, AmnioMAX-II Complete Medium and AmnioMAX-C100 Complete Medium, etc.), but are not limited thereto.
- Glycerol, propylene glycol and the base solvent or solution are preferably 0.5 to 2: 0.5 to 2: 6 to 10, more preferably 0.8 to 1.5: 0.8 to 1.5: 7 to 9, most preferably 1: It is used in a mixing ratio of 1: 8.
- the mixing ratio of glycerol and propylene glycol is less than 0.5, there may be a problem due to freezing upon freezing, and when it exceeds 2, degeneration of tissue after lyophilization may be induced.
- the cryoprotectant is prepared by dissolving sucrose in a solution in which the basic components are mixed so that the final concentration is 20 to 40% by weight.
- the freezing formed in the cells physically destroys cells and tissues.
- condensation of tissues occurs due to evaporation of moisture during freeze-drying. If tissue breakdown occurs due to freezing, the binding strength of collagen fibers constituting most of the tissues is weakened or broken. Is accelerated.
- the acellular dermal matrix thus produced is weak in tensile strength, so it is difficult to expect a good prognosis after surgery when implanted into the joint area of a burn patient who uses a lot of acellular dermal matrix.
- the present invention protects the tissue from physical destruction caused by freezing of glycerol having high membrane permeability, high concentration of sucrose and non-permeable propylene glycol. It was used as the main material of the cryopreservation solution to stabilize.
- the propylene glycol used in the present invention is less toxic than other glycols, and has an antimicrobial effect of inhibiting the growth of bacteria and fungi as a substance used in food additives and cosmetics. Thus, tissues can be protected from contamination after freeze drying.
- the cell-free dermal matrix according to the present invention can improve the stability of the tissue, and can further improve the safety of the dermal tissue with an ideal mixing ratio of sucrose, glycerol, propylene glycol, and a basic solvent or solution.
- sucrose when sucrose is included in the cryoprotectant less than 20% by weight, the stability of the tissue may be weakened due to ice crystals during freezing, and when included in excess of 40% by weight, the tissue after lyophilization due to the high concentration of sugar components. Sugar crystals are produced, affecting the safety of tissues.
- the cryoprotectant in the present invention is most preferably prepared by dissolving sucrose in a solution in which the base component is mixed such that the final concentration is 30% by weight.
- the penetration of the cryoprotectant into the skin in which the epidermal and dermal cells have been prepared in the present invention can be accomplished according to various methods known in the art, preferably in the cryoprotectant in the cold reactor.
- the sugar component is a source of nutrition of microorganisms, it may be a source of contamination during skin processing, so it is preferable to react the cryoprotectant at low temperature.
- the reaction of the cryoprotectant at room temperature can induce degeneration of the collagen tissue as a raw material, infiltration of the cryoprotectant at low temperature is more preferable than that at room temperature.
- the time to infiltrate may vary depending on the size of the skin tissue and the like, and may be infiltrated for about 6 to 24 hours, for example, in a low temperature reactor at 4 ° C.
- the skin in which the cryoprotectant is penetrated is preferably frozen using a freeze dryer capable of temperature control.
- a freeze dryer with adjustable temperature during freezing can freeze the skin at the desired rate.
- the rate of freezing the skin using the temperature control lyophilizer is preferably -0.1 ° C to -5 ° C per minute, most preferably -1 ° C per minute.
- the cell-free dermal matrix for transplantation prepared according to the treatment method of the present invention has high tissue stability, the extracellular matrix structure and the basement membrane are maintained intact, and the biological properties of the cell-free dermal matrix are small. It can increase the transplant rate and shorten the treatment period.
- FIG. 1 is a photograph taken by re-hydrating the cell-free dermal substrate lyophilized with a cryopreservation solution using sucrose by concentration, H & E staining, and magnified 100 times with an optical microscope.
- A 5% sucrose
- B 10% sucrose
- C 15% sucrose
- D 20% sucrose
- E 25% sucrose
- F 30% sucrose
- Figure 2 is a photograph taken at 150 and 1,000 times magnification of the cell-free dermal substrate lyophilized with a cryopreservation solution using sucrose by concentration electron microscope.
- A 0% sucrose, 150 times
- B 0% sucrose, 1,000 times
- C 10% sucrose, 150 times
- D 10% sucrose, 1,000 times
- E 30% sucrose, 150 times
- F 30% sucrose, 1,000 times
- Figure 3 is a photograph taken by 100 times magnification of the cell-free dermal substrate of Example, and Comparative Examples 1 and 2 with an optical microscope after H & E staining.
- A Example; B: Comparative Example 1; C: Comparative Example 2
- Figure 4 shows the results of measuring the degradation of collagen degrading enzymes for the cryopreserved acellular dermal substrate treated with a cryoprotectant containing sucrose at a final concentration of 30% by weight and the acellular dermal matrix of Comparative Examples 1 and 2 It is a graph.
- Positive control Collagen powder to collagen degrading enzyme
- Negative control Collagen degrading enzyme not treated
- cell-free dermal substrates were prepared according to the following steps.
- the washed dermis was placed in 0.5% SDS, and stirred at room temperature for 1 hour to react to remove cells in the dermis.
- Glycerol (10) Glycerol (Sigma, USA), propylene glycol (Sigma, USA) and phosphate buffer solution (GIBCO, USA) were mixed at a weight ratio of 1: 1: 1.
- a lyophilizer (Genesis 25XL, VirTis, USA) was prepared.
- the Tyvek bag of (14) was placed in a lyophilizer and frozen at -70 ° C at a rate of -1 ° C per minute, and placed in a lyophilizer with a vacuum of 5 torr for 24 hours to form a lyophilized acellular dermal matrix. .
- dextran (MWT 70,000), 6% sucrose, 7.5% polyvinylpyrrolidone (MWT 40,000), 1.25% raffinose in HBSS according to the method disclosed in Example 1 of US Pat. No. 5,336,616 using pig skin.
- Acellular dermal substrates were prepared in the same manner as described using one containing 1 mM disodium ethylenediamine tetraacetic acid.
- Pig skin was used to prepare lyophilized skin according to the following steps.
- the washed dermis was added to 0.1% SDS, and stirred at room temperature for 1 hour to react to remove cells in the dermis.
- the Tyvek bag of (13) was placed in a lyophilizer and frozen at -70 ° C at a rate of -1 ° C per minute, and placed in a lyophilizer with a vacuum of 5 torr for 24 hours to form a lyophilized acellular dermal substrate. .
- paraffin blocks were cut into 4 ⁇ m thick and dried to prepare paraffin sections.
- the sample was pre-fixed in 2.5% glutaraldehyde solution (fixative solution) for 2 hours, washed with 0.1M phosphate buffer and then fixed with 1% OsO 4 solution.
- Cryopreservation liquids containing final concentrations of 5%, 10%, 15%, 20%, 25% and 30% sucrose were prepared and then used to prepare free cell dried dermal substrates according to the method of the example.
- the prepared cell-free dermal matrix was rehydrated and subjected to H & E staining according to the above method and photographed with an optical microscope (Olympus BX51, H & E staining).
- the concentration of sucrose was less than 20%, the tissue substrate was destroyed in proportion to the concentration when observed after freeze-drying. However, in the case of 20%, 25%, and 30%, the substrate was destroyed. It can be observed that the shape remains close to the original shape.
- the cell-free dermal substrate prepared by treatment with a cryopreservation solution containing no sucrose and a cryopreservation solution containing 10% and 30% sucrose prepared above were photographed with a scanning electron microscope according to the above method. 2 is shown.
- sucrose-free and treated with cryopreservation solution containing 10% sucrose the acellular dermal matrix was observed to be destroyed after freeze-drying, but treated with cryopreservation solution containing 30% sucrose.
- the tissue matrix maintained its shape well after destruction by freeze drying.
- sucrose containing 20% or more of the destruction of the tissue occurs during the lyophilization process.
- the cell-free dermal substrates of Examples and Comparative Examples 1 and 2 were subjected to H & E staining according to the above method, and photographed by optical microscopy (Olympus BX51, H & E staining).
- Example Compared with Comparative Examples 1 and 2, the cell-free dermal matrix of Example was much more stable than tissue-free dermal matrix of Comparative Examples 1 and 2 from tissue destruction of ice crystals caused by lyophilization due to the superiority of cryopreservation solution. And it was found.
- the calculated L-leucine release amount is shown in FIG. 4.
- the cell-free dermal matrix of the embodiment is higher than the cell-free dermal matrix of Comparative Examples 1 and 2 it can be seen that the degradation rate by the collagen degrading enzyme significantly reduced.
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Abstract
Description
Claims (7)
- i) 동종 피부의 표피를 제거하고;ii) 진피 내 세포를 제거하며;iii) 글리세롤, 프로필렌 글리콜, 및 기본 용매 또는 용액을 혼합하고;iv) 상기 용액에 수크로스를 최종 농도가 20 내지 40 중량%가 되도록 용해하여 동결 보호제를 제조하며;v) 상기 동결 보호제를 상기 표피 및 진피 내 세포가 제거된 피부에 침투시키고;vi) 상기 동결 보호제가 침투된 피부를 동결 건조하는 것을 포함하는 무세포 진피 기질의 제조 방법.
- 제1항에 있어서, 글리세롤, 프로필렌 글리콜 및 기본 용매 또는 용액의 혼합비가 중량 기준으로 0.5 ~ 2 : 0.5 ~ 2 : 6 ~ 10인 것을 특징으로 하는 무세포 진피 기질의 제조 방법.
- 제1항에 있어서, 상기 기본 용매 또는 용액이 증류수, 생리 식염수(normal saline), 인산완충용액(PBS), HBSS(Hank's balanced salt solution), TBS(Tris buffered saline), TAPS(N-Tris(hydroxymethyl)methyl-3-aminopropanesulfonic acid) 완충용액, Bicine(N,N-Bis(2-hydroxyethyl)glycine) 완충용액, HEPES(4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid) 완충용액, TES(N-Tris(hydroxymethyl)methyl-2-aminoethanesulfonicd acid) 완충용액, PIPES(piperazine-N,N'-bis(2-ethanesulfonic acid) 완충용액, 카코딜레이트(cacodylate) 완충용액, MES(2-(N-morpholino)ethanesulfonic acid) 완충용액, MEM(Minimum Essential Media), DMEM(Dulbecco's Modified Eagle Media), RPMI 1640, IMDM(Iscove's Modified Dulbecco's Media), Defined Keratinocyte-SFM(without BPE(Bovine Pituitary Extract)), Keratinocyte-SFM(with BPE), KnockOut D-MEM, AmnioMAX-II Complete Medium 및 AmnioMAX-C100 Complete Medium로 이루어지는 그룹 중에서 선택되는 하나 이상인 것을 특징으로 하는 무세포 진피 기질의 제조 방법.
- 제1항에 있어서, 수크로스의 최종 농도가 30 중량%인 것을 특징으로 하는 무세포 진피 기질의 제조 방법.
- 제1항에 있어서, 동결 보호제를 분리된 피부에 침투시키는 것이 4℃의 저온 반응기에서 6시간 내지 24시간 동안 침투시키는 것을 특징으로 하는 무세포 진피 기질의 제조 방법.
- 제1항에 있어서, 동결 보호제가 침투된 피부를 분당 -1℃의 속도로 동결하는 것을 특징으로 하는 무세포 진피 기질의 제조 방법.
- 제1항 내지 제6항 중 어느 한 항의 방법에 의하여 제조된 무세포 진피 기질.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US13/580,248 US9623149B2 (en) | 2010-02-26 | 2010-06-11 | Method for producing an acellular dermal matrix, and acellular dermal matrix produced by same |
CN201080064799.0A CN102869392B (zh) | 2010-02-26 | 2010-06-11 | 无细胞真皮基质的制备方法及由其制备的无细胞真皮基质 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020100018134A KR101089614B1 (ko) | 2010-02-26 | 2010-02-26 | 무세포 진피 기질의 제조 방법 및 그로부터 제조된 무세포 진피 기질 |
KR10-2010-0018134 | 2010-02-26 |
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WO2011105663A1 true WO2011105663A1 (ko) | 2011-09-01 |
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PCT/KR2010/003783 WO2011105663A1 (ko) | 2010-02-26 | 2010-06-11 | 무세포 진피 기질의 제조 방법 및 그로부터 제조된 무세포 진피 기질 |
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US (1) | US9623149B2 (ko) |
KR (1) | KR101089614B1 (ko) |
CN (1) | CN102869392B (ko) |
WO (1) | WO2011105663A1 (ko) |
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US9532866B2 (en) * | 2012-03-15 | 2017-01-03 | L&C Bio Co., Ltd. | Acellular dermal graft |
EP2967835B1 (en) | 2013-03-14 | 2018-08-08 | Musculoskeletal Transplant Foundation | Soft tissue repair allografts and methods for preparing same |
CN103285420B (zh) * | 2013-03-28 | 2015-03-25 | 北京桀亚莱福生物技术有限责任公司 | 一种用于覆盖烧伤创伤创面的人体生物敷料的制作方法 |
MX2016001247A (es) | 2013-07-30 | 2016-08-17 | Musculoskeletal Transplant Foundation | Matrices derivadas de tejido suave acelular y metodos para preparar las mismas. |
US10912864B2 (en) | 2015-07-24 | 2021-02-09 | Musculoskeletal Transplant Foundation | Acellular soft tissue-derived matrices and methods for preparing same |
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KR20170049784A (ko) * | 2015-10-28 | 2017-05-11 | 재단법인 아산사회복지재단 | 섬유화 무세포 진피 기질 및 생체적합성 고분자를 포함하는 창상 피복재 및 이의 제조 방법 |
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USD856517S1 (en) | 2016-06-03 | 2019-08-13 | Musculoskeletal Transplant Foundation | Asymmetric tissue graft |
KR102232847B1 (ko) * | 2017-04-28 | 2021-03-26 | (주)시지바이오 | 섬유화 무세포 진피 기질 및 생체적합성 고분자를 포함하는 조성물 및 이의 제조 방법 |
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USD895812S1 (en) | 2018-09-07 | 2020-09-08 | Musculoskeletal Transplant Foundation | Soft tissue repair graft |
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CN115226393A (zh) * | 2021-02-15 | 2022-10-21 | 爱恩斯生物科技(昆山)有限公司 | 用于乳房重建的无细胞皮肤替代材料及其制备方法 |
KR102366303B1 (ko) * | 2021-07-05 | 2022-02-23 | 주식회사 이레텍코리아 | 식물성 복합 천연 계면활성제를 이용한 무세포 진피 기질 및 그 제조방법 |
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US20120329034A1 (en) | 2012-12-27 |
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