WO2007018093A1 - 癒着防止膜 - Google Patents
癒着防止膜 Download PDFInfo
- Publication number
- WO2007018093A1 WO2007018093A1 PCT/JP2006/315306 JP2006315306W WO2007018093A1 WO 2007018093 A1 WO2007018093 A1 WO 2007018093A1 JP 2006315306 W JP2006315306 W JP 2006315306W WO 2007018093 A1 WO2007018093 A1 WO 2007018093A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- adhesion
- gelatin
- weight
- material according
- film
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title abstract description 9
- 238000004132 cross linking Methods 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 58
- 108010025899 gelatin film Proteins 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- LOKCTEFSRHRXRJ-UHFFFAOYSA-I dipotassium trisodium dihydrogen phosphate hydrogen phosphate dichloride Chemical compound P(=O)(O)(O)[O-].[K+].P(=O)(O)([O-])[O-].[Na+].[Na+].[Cl-].[K+].[Cl-].[Na+] LOKCTEFSRHRXRJ-UHFFFAOYSA-I 0.000 claims abstract description 11
- 239000002953 phosphate buffered saline Substances 0.000 claims abstract description 11
- 108010010803 Gelatin Proteins 0.000 claims description 51
- 239000008273 gelatin Substances 0.000 claims description 49
- 229920000159 gelatin Polymers 0.000 claims description 49
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- 238000010438 heat treatment Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 210000003516 pericardium Anatomy 0.000 claims 1
- 239000000499 gel Substances 0.000 abstract description 6
- 231100000331 toxic Toxicity 0.000 abstract description 6
- 230000002588 toxic effect Effects 0.000 abstract description 6
- 239000000243 solution Substances 0.000 description 10
- 239000003431 cross linking reagent Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 229910052731 fluorine Inorganic materials 0.000 description 7
- 239000011737 fluorine Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 238000010382 chemical cross-linking Methods 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 5
- 238000001727 in vivo Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
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- 238000001356 surgical procedure Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 206010034486 Pericarditis adhesive Diseases 0.000 description 2
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- 235000015277 pork Nutrition 0.000 description 2
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- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 description 1
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- 241000283690 Bos taurus Species 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
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- 229920000954 Polyglycolide Polymers 0.000 description 1
- 241000700157 Rattus norvegicus Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- 210000000683 abdominal cavity Anatomy 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
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- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000005485 electric heating Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000002158 endotoxin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 235000011187 glycerol Nutrition 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 229920002674 hyaluronan Polymers 0.000 description 1
- 229960003160 hyaluronic acid Drugs 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 239000011259 mixed solution Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
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Classifications
-
- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
-
- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/043—Proteins; Polypeptides; Degradation products thereof
- A61L31/045—Gelatin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/42—Proteins; Polypeptides; Degradation products thereof; Derivatives thereof, e.g. albumin, gelatin or zein
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/04—Drugs for skeletal disorders for non-specific disorders of the connective tissue
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
- C07K14/78—Connective tissue peptides, e.g. collagen, elastin, laminin, fibronectin, vitronectin or cold insoluble globulin [CIG]
Definitions
- the present invention is a hydrous gel that is toxic to the living body and has flexibility to fit the affected area, is homogeneous in cross-linking, retains its form in the living body for a certain period of time, and then rapidly enters the living body. It relates to an anti-adhesion film that is absorbed.
- Adhesion between living tissues often occurs after surgery, causing pain and dysfunction. Severe cases require surgery to remove the adhesions. Also, if such adhesions occur, the risk of re-operation of the original disease increases.
- As a method for preventing such adhesion between living tissues there has been proposed a method of isolating a site where adhesion may occur using a film called an adhesion preventing material.
- the performance required for the anti-adhesion material is that it has flexibility to fit the affected area as a hydrous gel, and retains the form in vivo for a certain period of time, and then is rapidly absorbed by the living body. And that the tissue reaction is slight.
- a material using a film containing gelatin has been proposed (for example, Patent Documents 1 to 6).
- Gelatin is a polymer derived from living organisms and has excellent biocompatibility.
- Patent Documents 1 to 6 impart appropriate water content and degradability by crosslinking a gelatin-containing film by an appropriate method.
- Patent Documents 1, 4, 5, and 6 describe ultraviolet crosslinking
- Patent Documents 2 and 3 describe the use of a chemical crosslinking agent in combination.
- the anti-adhesive material that also has the strength of UV-crosslinked gelatin film is highly effective for cross-linking. Regardless, there is a problem that the form may be lost early in vivo.
- the method using a chemical cross-linking agent has a problem that the cross-linking agent remains or a by-product derived from the cross-linking agent is generated when it is decomposed in the body.
- Patent Document 1 Japanese Patent Laid-Open No. 11-47258
- Patent Document 2 Japanese Patent Laid-Open No. 11-279296
- Patent Document 3 Japanese Patent Laid-Open No. 2000-212286
- Patent Document 4 Japanese Patent Laid-Open No. 2003-62063
- Patent Document 5 Japanese Unexamined Patent Application Publication No. 2004-209228
- Patent Document 6 Japanese Patent No. 3517358
- the inventors of the present invention have found that the cause of the loss of the morphology of the anti-adhesive material having the strength of the UV-crosslinked gelatin film in the living body at an early stage in the living body despite the high cross-linking is non-uniformity in the anti-adhesive material. It was. That is, when crosslinking is performed by irradiating the gelatin film with ultraviolet rays, since ultraviolet rays are absorbed by the gelatin, the crosslinking is relatively high in the vicinity of the surface, whereas the crosslinking in the deep part in the thickness direction is performed. Lower.
- the method using a chemical cross-linking agent is problematic in that the cross-linking agent remains or the low-molecular weight substance is released due to the decomposition of the cross-linked portion.
- the present invention has flexibility to fit an affected part as a hydrous gel that is not toxic to a living body, has a uniform cross-linking, maintains a form in vivo for a certain period of time, and It is another object of the present invention to provide an anti-adhesion membrane that is rapidly absorbed by a living body.
- the present invention is an anti-adhesion material having a heat-crosslinked gelatin film strength and having a moisture content of 60 to 85% calculated by the following formula (1).
- Ws represents the weight (wet weight) of the antiadhesive material immersed in phosphate buffered saline for 1 hour at 25 ° C.
- Wd represents the antiadhesive material with a vacuum dryer. This represents the weight (dry weight) when completely used.
- the adhesion-preventing material of the present invention also has a heat-crosslinked gelatin film strength.
- the gelatin used as the raw material for the gelatin film is not particularly limited, and for example, gelatin derived from bones, tendons, skins, etc. of cattle, pigs, chickens, and cocoons can be used.
- the gelatin as the raw material for the gelatin film has a preferable lower limit of 100,000 and a preferable upper limit of 300,000 for the weight average molecular weight as measured by GPC. If it is less than 100,000, the resulting anti-adhesion material of the present invention may have a lower tensile strength. On the other hand, the upper limit of gelatin does not exceed 300,000, so this is the upper limit. A more preferable lower limit is 150,000, and a more preferable upper limit is 300,000.
- Gelatin used as a raw material for the gelatin film has a preferable lower limit of jelly strength of 150 g and a preferable upper limit of 350 g. If it is less than 150 g, the resulting anti-adhesion material of the present invention may have a high deformation rate or a low tensile strength, and it is difficult to produce a product exceeding 350 g. .
- a more preferable lower limit is 250 g, and a more preferable upper limit is 350 g.
- jelly strength is defined in JIS K 6503-2001. This means jelly strength, and the surface of the jelly prepared by cooling a 67% by weight gelatin aqueous solution at 10 ° C for 17 hours is pushed down 4mm at a speed of lmm per second with a 12.7mm diameter plunger. It can be measured by reading the load necessary for the measurement.
- Gelatin used as a raw material for the above gelatin film has a very low endotoxin content, and alkali-processed gelatin excellent in safety is preferred. Specifically, ushi-derived alkali-processed gelatin manufactured by Futsubi Co., Ltd. And pork-derived alkali-treated gelatin
- Gelatin which is a raw material for the gelatin film, may be added with glycerin, polyethylene glycol, hyaluronic acid or the like, for example, for the purpose of imparting flexibility to the film within a range not impairing the object of the present invention.
- conventionally known additives such as antibacterial agents and anti-inflammatory agents may be blended.
- the gelatin film is prepared by dissolving the raw material gelatin in an appropriate solvent to prepare a gelatin solution, and a water-repellent treated glass plate or polystyrene sheet (tray) or fluorine-containing resin sheet (tray). It can be obtained by drying it after casting it on a release sheet.
- raw material gelatin is dissolved in a heated solvent.
- a heated solvent for example, distilled water, dimethyl sulfoxide (DMSO), etc., or a mixed solution thereof can be used. Among them, distilled water is preferable in terms of handling.
- the addition ratio of gelatin is not particularly limited, but a preferable lower limit is 0.1 lg per lOOmL of solvent, and a preferable upper limit is 50 g. If it is less than 0.lg, film formation may be difficult, and if it exceeds 5 Og, the solution may have a high viscosity and it may be difficult to cast uniformly. More preferred! /, Lower limit is lg, more preferred! /, Upper limit is 30g.
- the melting temperature is not particularly limited, but the preferred lower limit is 30 ° C and the preferred upper limit is 70 ° C. If it is less than 30 ° C, it may take a long time to dissolve, and if it exceeds 70 ° C, gelatin may be decomposed and reduced in molecular weight, resulting in a decrease in jelly strength.
- a more preferred lower limit is 40 ° C, and a more preferred upper limit is 60 ° C.
- An uncrosslinked gelatin film can be produced by casting the obtained gelatin-dissolved solution on polystyrene or a fluoro-facilitating petri dish and drying it.
- the drying method is not particularly limited, and for example, natural drying, heat drying, reduced pressure drying (vacuum drying), forced exhaust drying, forced circulation convection and the like can be performed.
- the preferable lower limit of the drying temperature is 40 ° C, and the preferable upper limit is 60 ° C. If it is less than 40 ° C, it may take more time than necessary to dry, and if it exceeds 60 ° C, gelatin will be degraded and its molecular weight will be reduced. A more preferred lower limit is 0 ° C, and a more preferred upper limit is 40 ° C.
- the series of steps for producing the gelatin film is preferably performed aseptically in, for example, a clean bench or a clean room. This is to prevent the gelatin film from being contaminated by the propagation of various bacteria during work. Accordingly, it is preferable to use a manufacturing instrument that has been sterilized by, for example, autoclave, EOG (ethylene oxide gas), dry heat, electron beam or the like. Further, the gelatin solution is preferably subjected to, for example, conventionally known filter filtration sterilization and subjected to the above-mentioned step.
- EOG ethylene oxide gas
- gelatin film thus obtained is subjected to thermal crosslinking.
- Thermal cross-linking allows uniform cross-linking compared to UV cross-linking, and does not generate highly toxic or low molecular weight substances compared to methods using chemical cross-linking agents.
- the thermal crosslinking method is not particularly limited, but it is preferable to heat the film evenly on both sides. By heating from both sides, uniform cross-linking can be performed in the thickness direction.
- Heating is preferably performed under a reduced pressure of 1 Torr or less. By reducing the pressure, it is possible to suppress the thermal decomposition of gelatin due to heating.
- thermal crosslinking method of the gelatin film a method of heating under reduced pressure in a state where an uncrosslinked gelatin film is sandwiched between two sheets having the same thermal conductivity is preferable. According to such a method, heat is uniformly conducted from the two sheets to the uncrosslinked gelatin film, so that uniform crosslinking can be performed in the thickness direction and the planar direction of the gelatin film.
- a method for producing an anti-adhesion material having a thermal crosslinking step in which an uncrosslinked gelatin film is sandwiched between two sheets having the same thermal conductivity and heated under reduced pressure is also disclosed in 1 of the present invention.
- uncrosslinked gelatin film and the sheet may be alternately stacked so that the latin film is sandwiched between two sheets having the same thermal conductivity.
- heat may be non-uniform between the end of the stacked portion and the central portion. That is, heat conduction may change depending on the distance from the heat source.
- sandwiching a member having excellent thermal conductivity such as an aluminum plate at an appropriate interval it is possible to conduct heat uniformly and to prevent uneven cross-linking in the lot.
- thermal cross-linking treatment can be performed to achieve more uniform thermal cross-linking.
- FIG. 1 is a schematic diagram showing a preferred embodiment in the case where a large number of uncrosslinked gelatin films are simultaneously subjected to thermal crosslinking.
- gelatin film 2 and fluorine resin sheet 3 are alternately stacked in vacuum dryer 1 so that uncrosslinked gelatin film 2 is sandwiched between two fluorine resin sheets 3. ing.
- a method for producing an anti-adhesion material in which sheets having different thermal conductivities are combined and thermal cross-linking treatment is performed by controlling the thermal conductivities is also one aspect of the present invention.
- sandwiching a sheet-like heat source is also one aspect of the present invention.
- a more uniform thermal cross-linking can be achieved by a powerful method.
- Examples of the sheet-like heat source include a silicon rubber heater, a silicon sheet heater, and a metal heater in which nickel chrome for electric heating is sandwiched between glass fiber reinforced silicone rubber sheets and combined with a temperature controller.
- the thermal crosslinking is performed to some extent with a water content calculated by the following formula (1) of 60 to 85%.
- the moisture content can be used as an index reflecting the degree of cross-linking, and the lower the moisture content, the higher the bridge degree.
- Ws is an anti-adhesive material immersed in phosphate buffered saline at 25 ° C for 1 hour. It represents the weight when dipped (wet weight), and Wd represents the weight (dry weight) when the adhesion-preventing material is completely dried using a vacuum dryer.
- the water content is less than 60%, it has rubber-like elasticity and is excellent in shape retention, but the anti-adhesion performance that degrades slowly when placed in a living body may deteriorate. If it exceeds 85%, the shape retention will be reduced, and the shape will be lost early as soon as it is placed in the living body.
- the lower limit is 65%, preferred! /, And the upper limit is 80%.
- the moisture content is lower as the degree of crosslinking is higher.
- the conditions are appropriately set. However, if the temperature is set to a low temperature, it takes a long time for crosslinking. On the other hand, if the temperature is set at a high temperature, the film becomes brittle. It is easy.
- An example of a more preferable thermal crosslinking condition for obtaining the adhesion preventing material of the present invention is 120 to 150. C, 5-30 hours.
- the adhesion-preventing membrane of the present invention has a tensile strength measured after being immersed in a phosphate buffered saline solution at 25 ° C for 1 hour by a method according to JIS L 1912-1997.
- a preferred lower limit is 1N. If it is less than 1N, it may be difficult to use in practice. There is no particular upper limit, but in reality it is difficult to exceed ION.
- the preferable lower limit of the deformation rate calculated by the following formula (2) is 95%, and the preferable upper limit is 120%.
- the deformation rate can be used as an index reflecting the operability during use, and the operability becomes worse as the deformation rate is far from 100%.
- Ss represents an area when the adhesion preventing material is immersed in phosphate buffered saline for 1 hour at 25 ° C
- Sd represents an area before the adhesion preventing material is immersed. If it is less than 95%, the area necessary to cover the affected area may not be secured. Then, it may become ⁇ operation. (Especially when a reinforcing material is contained, it is hard to handle due to curling S.) A more preferable lower limit is 100%, and a more preferable upper limit is 110%.
- the adhesion-preventing membrane of the present invention may be further reinforced by a reinforcing material having biodegradable absorbable polymer power. Since the reinforcing material having biodegradable absorbable polymer power is decomposed and absorbed in the living body, the anti-adhesion membrane of the present invention requires re-operation or the like by reinforcing with such a reinforcing material. In addition, it is possible to provide strength sufficient to prevent damage by suturing.
- the biodegradable and absorbable polymer is not particularly limited, but polylactic acid, lactic acid-strength prolatatone copolymer, polyglycolic acid, and the like are preferable because they exhibit appropriate strength and degradability.
- the embodiment of the reinforcing material is not particularly limited, and examples thereof include a nonwoven fabric, a woven fabric, a knitted fabric, a braid, and a film.
- a nonwoven fabric Preferably, a long fiber nonwoven fabric, a goose weave, a warp knitting and the like are appropriate from the viewpoint of fraying resistance when fixed with a suture.
- the surface of the reinforcing material may be subjected to a hydrophilic treatment.
- a hydrophilic treatment method is not particularly limited, and examples thereof include plasma treatment, glow discharge treatment, corona discharge treatment, ozone treatment, surface graft treatment, coating treatment, chemical treatment, and ultraviolet irradiation treatment.
- the mode of reinforcement by the reinforcing material is not particularly limited.
- a mode in which the reinforcing material is arranged on the surface and Z or inside of the gelatin film and integrated is preferable.
- the location of reinforcement is not particularly limited, and the entire gelatin film may be reinforced, or only a part to be sutured may be reinforced.
- the method of reinforcing with the reinforcing material is not particularly limited.
- the reinforcing material is immersed, and the gelatin solution is soaked inside the reinforcing material. Drying method (first method); the above gelatin solution in a petri dish After casting, start gelatin gelatin. Then, before the gelatin is completely gelled, a reinforcing material is placed on the gelatin immediately before the gelling, further completely gelled and dried (second method); and integrated by the second method.
- a method in which a composite of a reinforcing material and a gelatin film is immersed in a gelatin solution so that the reinforcing material faces and dried (third method); a glass plate that has been confronted with a desired thickness in advance
- Examples include a method (fourth method) in which a reinforcing material having a desired shape is held between a glass plate, a gelatin solution is poured between the glass plates, this is cooled and gelled, and then dried (fourth method).
- the adhesion-preventing material of the present invention is a gelatin film that has been thermally cross-linked so as to have a constant water content, so that the degree of cross-linking is uniform as a whole, and gelatin that has been subjected to UV cross-linking. Compared to anti-adhesion materials that also have film strength, it has higher strength and has excellent shape stability in vivo. Furthermore, there are advantages such as no concern about the release of toxic substances having a low molecular weight even when compared with an anti-adhesion material composed of a gelatin film crosslinked with a chemical crosslinking agent.
- the adhesion preventing material of the present invention is particularly suitable for use in preventing pericardial adhesion.
- the pericardial adhesion-preventing material comprising the adhesion-preventing material of the present invention is also one aspect of the present invention.
- the present invention is flexible enough to fit the affected area as a hydrous gel that is not toxic to the living body, has a uniform cross-linking, maintains its form in the living body for a certain period of time, and then quickly absorbs it into the living body.
- An anti-adhesion membrane can be provided.
- Gelatin manufactured by Futsubishi, alkali-treated porcine product, weight average molecular weight 13.20,000, jelly strength 257 g
- distilled water so as to be 5% by weight
- 13 mL was poured into (size 14 cm ⁇ 10 cm) and air-dried as it was to prepare an uncrosslinked gelatin film having a thickness of about 40 m.
- uncrosslinked gelatin films are stacked to form an uncrosslinked gelatin film with a thickness of about 160 m.
- a laminate was obtained.
- the uncrosslinked gelatin gelatins constituting the uncrosslinked gelatin film laminate were numbered 1, 2, 3, and 4 as Uchiforce.
- the obtained uncrosslinked gelatin film laminate is sandwiched from both sides with a 1 mm thick fluorine resin sheet, and further placed on a vacuum dryer shelf with both sides sandwiched between 3 mm thick aluminum plates. It was. In this state, thermal crosslinking was performed at a pressure of 1 Torr or less and 135 ° C. for 8 hours.
- the uncrosslinked gelatin film laminate obtained by the same method as in Example 1 was irradiated with ultraviolet rays from the film 1 side at an intensity of 0.25 mWZcm2 (15 W sterilization lamp, distance 50 cm) for 10 hours to carry out ultraviolet crosslinking.
- the uncrosslinked gelatin film laminate obtained by the same method as in Example 1 was irradiated with ultraviolet rays on the film 1 side force in the same manner as in (Comparative Example 1).
- ultraviolet rays were irradiated from the film 4 side in the same manner, and ultraviolet treatment was performed on both sides. (10 hours on each side, total 20 hours irradiation)
- the moisture content was measured by the following method for each of the four gelatin films constituting the crosslinked gelatin film laminate. That is, the gelatin film was dried for about 24 hours at 25 ° C. under a reduced pressure of 1 Torr or less by a vacuum dryer, and the dry weight was measured. On the other hand, the gelatin film was immersed in 25 ° C phosphate buffered saline for 1 hour, and the wet weight was measured. From the obtained dry weight and wet weight, the water content was determined by the above formula (1).
- This result shows the distribution of moisture content in the depth direction every 40 ⁇ m when an uncrosslinked gelatin film with a thickness of about 160 m is subjected to thermal crosslinking and UV crosslinking on only one side or both sides.
- thermal crosslinking provides uniform crosslinking compared to ultraviolet crosslinking.
- Gelatin manufactured by Futabi Co., Ltd., pork-derived alkali-treated product, weight average molecular weight 19.10,000, jelly strength 255 g
- This uncrosslinked gelatin film was allowed to stand in a vacuum dryer in the manner shown in FIG. That is, gelatin films and lmm-thick fluorine resin sheets were alternately stacked to ensure that the uncrosslinked gelatin film laminate was sandwiched between two fluorine resin sheets. Furthermore, an aluminum plate with a thickness of 3 mm was sandwiched between every five unbridged gelatin films.
- the uncrosslinked gelatin film was numbered 1, 2, 3,..., 20 from the bottom, and in this state, thermal crosslinking was performed under conditions of a pressure of 1 Torr or less, 135 ° C., and 8 hours.
- Table 2 shows that a nearly constant water content can be obtained regardless of the installation position in the vacuum dryer.
- Gelatin manufactured by Futsubishi, alkali-treated porcine product, weight average molecular weight 13.20,000, jelly strength 257 g
- distilled water so as to be 5% by weight
- 50 mL was poured into (size 14 cm ⁇ 10 cm) and air-dried as it was to obtain an uncrosslinked gelatin film having a thickness of about 160 m.
- the obtained non-crosslinked gelatin film was sandwiched between lmm-thick fluorine resin sheets on both sides and placed on a vacuum dryer shelf with both sides sandwiched between 3mm-thick aluminum plates. In this state, thermal crosslinking was performed at a pressure of 1 Torr or less and 135 ° C. for 8 hours.
- An uncrosslinked gelatin film having a thickness of about 160 m was produced in the same manner as in Example 3.
- the obtained uncrosslinked gelatin film was irradiated with ultraviolet rays at an intensity of 0.25 mWZcm2 (15 W sterilizing lamp, distance 50 cm) for 10 hours on each side, and both sides were UV-crosslinked.
- Example 3 The adhesion preventing materials produced in Example 3 and Comparative Example 3 were evaluated by the following methods. The results are shown in Table 3.
- the sample was cut to a width of 1 cm and a length of 3 cm, and immersed in 25 ° C. phosphate buffered saline for 1 hour. Next, after wiping off excess moisture on the surface, it was set on a tensile tester (Instron Model 4302) with a distance between chucks of lcm, and it was pulled at a crosshead speed of lOOmmZmin, and the stress at break was determined as the tensile strength. .
- the obtained anti-adhesion material was cut into a size of lcm X l.5 cm. This was embedded in the abdominal cavity of Wistar rats (5 weeks old). Incisions were made after 1, 2, 3, 4, 6, and 8 weeks, and the state of the anti-adhesion material was visually observed and evaluated according to the following criteria.
- the present invention has flexibility that allows it to fit into an affected area as a hydrous gel that is not toxic to a living body, and has a uniform cross-linking and maintains a form in vivo for a certain period of time, and then quickly.
- An anti-adhesion membrane that is absorbed by a living body can be provided.
- FIG. 1 is a schematic view showing a preferred embodiment in the case where a large number of uncrosslinked gelatin films are subjected to thermal crosslinking simultaneously.
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Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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BRPI0614396A BRPI0614396B8 (pt) | 2005-08-05 | 2006-08-02 | método para produzir o material de antiadesão que compreende um filme de gelatina termicamente reticulado |
CA2617977A CA2617977C (en) | 2005-08-05 | 2006-08-02 | Method for producing an anti-adhesion membrane comprising thermally crosslinked gelatin film |
KR1020087005262A KR101291950B1 (ko) | 2005-08-05 | 2006-08-02 | 유착 방지재의 제조방법 |
US11/989,701 US8741969B2 (en) | 2005-08-05 | 2006-08-02 | Anti-adhesion membrane |
CN2006800281742A CN101232907B (zh) | 2005-08-05 | 2006-08-02 | 防止粘连膜 |
EP06782175.1A EP1920790B1 (en) | 2005-08-05 | 2006-08-02 | Anti-adhesion membrane |
AU2006277460A AU2006277460B2 (en) | 2005-08-05 | 2006-08-02 | Anti-adhesion membrane |
HK08110913.5A HK1119091A1 (en) | 2005-08-05 | 2008-09-30 | Anti-adhesion membrane |
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JP2005-228641 | 2005-08-05 | ||
JP2005228641A JP4917775B2 (ja) | 2005-08-05 | 2005-08-05 | 癒着防止膜の製造方法 |
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US (1) | US8741969B2 (ja) |
EP (1) | EP1920790B1 (ja) |
JP (1) | JP4917775B2 (ja) |
KR (1) | KR101291950B1 (ja) |
CN (1) | CN101232907B (ja) |
AU (1) | AU2006277460B2 (ja) |
BR (1) | BRPI0614396B8 (ja) |
CA (1) | CA2617977C (ja) |
HK (1) | HK1119091A1 (ja) |
WO (1) | WO2007018093A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013018864A1 (ja) * | 2011-08-03 | 2013-02-07 | グンゼ株式会社 | 癒着防止膜 |
JP2013226166A (ja) * | 2012-04-24 | 2013-11-07 | Gunze Ltd | 生体吸収性癒着防止材料 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012095731A (ja) * | 2010-10-29 | 2012-05-24 | Gunze Ltd | 生体吸収性医療材料 |
DE102011004239A1 (de) * | 2011-02-16 | 2012-08-16 | Gelita Ag | Verwendung eines medizinischen Implantats als Adhäsionsbarriere |
JP5779561B2 (ja) * | 2012-09-10 | 2015-09-16 | 株式会社日立製作所 | 電力変換システム |
WO2015049800A1 (ja) * | 2013-10-04 | 2015-04-09 | ニチバン株式会社 | 生体内付着性の医療用フィルム |
EP3383993A4 (en) * | 2015-12-03 | 2019-07-31 | The Government of the United States of America, as represented by the Secretary of the Navy | BIOPAPIERS AS SUBSTRATE FOR TISSUE CULTURE |
US10050010B1 (en) * | 2017-03-22 | 2018-08-14 | International Business Machines Corporation | Selectively cross-linked thermal interface materials |
JP6989757B2 (ja) * | 2017-06-19 | 2022-02-03 | 澁谷工業株式会社 | ゼラチン架橋体の製造方法および製造装置 |
EP3904377B1 (en) * | 2018-12-26 | 2023-08-02 | National Institute for Materials Science | Powder, wound-covering material, adhesion prevention material, hemostatic material, and production method for powder |
CN111941714B (zh) * | 2020-07-03 | 2022-06-28 | 东莞市天沛塑料有限公司 | 一种eps塑料泡沫脱模工艺 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10113384A (ja) * | 1996-10-14 | 1998-05-06 | Yoshihiko Shimizu | 医用代替膜及びその製造方法 |
JPH10265590A (ja) * | 1997-03-26 | 1998-10-06 | Bmg Kk | 生体吸収性熱処理ゼラチンフィルム |
JPH11279296A (ja) * | 1998-03-25 | 1999-10-12 | Bmg:Kk | 生体吸収性熱処理ゼラチンおよびコラーゲンシート |
JP2004065780A (ja) * | 2002-08-08 | 2004-03-04 | Gunze Ltd | 生体材料およびそれを用いた癒着防止材 |
JP2004117831A (ja) * | 2002-09-26 | 2004-04-15 | Shin Etsu Polymer Co Ltd | 透明衝撃緩和部材および透明積層体 |
JP2004209228A (ja) * | 2002-12-16 | 2004-07-29 | Gunze Ltd | 医療用フィルム |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5891558A (en) | 1994-11-22 | 1999-04-06 | Tissue Engineering, Inc. | Biopolymer foams for use in tissue repair and reconstruction |
JPH1147258A (ja) | 1997-07-30 | 1999-02-23 | Menicon Co Ltd | ゼラチンとコラーゲンとを含有する医用基材 |
JP3517358B2 (ja) | 1998-07-21 | 2004-04-12 | 株式会社ジェイ・エム・エス | 癒着防止材及びその製造方法 |
JP2000212286A (ja) | 1999-01-25 | 2000-08-02 | Terumo Corp | 耐温水性ゼラチンゲル |
JP4198394B2 (ja) | 2001-06-15 | 2008-12-17 | グンゼ株式会社 | 癒着防止材 |
EP1402906A4 (en) * | 2001-06-15 | 2007-04-25 | Gunze Kk | INHIBITOR MATERIAL OF SYNECHIE |
US7605231B2 (en) | 2002-04-26 | 2009-10-20 | Yasuhiko Tabata | Gelatin derivatives and high-molecular micelle comprising the derivatives |
JP4093001B2 (ja) * | 2002-09-26 | 2008-05-28 | ヤマハ株式会社 | 楽譜表示データを記憶した記憶媒体、その楽譜表示データを用いた楽譜表示装置及びプログラム |
KR100803798B1 (ko) | 2002-12-16 | 2008-02-14 | 군제 가부시키가이샤 | 의료용 필름 |
DE102004024635A1 (de) * | 2004-05-12 | 2005-12-08 | Deutsche Gelatine-Fabriken Stoess Ag | Verfahren zur Herstellung von Formkörpern auf Basis von vernetzter Gelatine |
-
2005
- 2005-08-05 JP JP2005228641A patent/JP4917775B2/ja active Active
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2006
- 2006-08-02 AU AU2006277460A patent/AU2006277460B2/en not_active Ceased
- 2006-08-02 CN CN2006800281742A patent/CN101232907B/zh active Active
- 2006-08-02 WO PCT/JP2006/315306 patent/WO2007018093A1/ja active Application Filing
- 2006-08-02 KR KR1020087005262A patent/KR101291950B1/ko not_active IP Right Cessation
- 2006-08-02 BR BRPI0614396A patent/BRPI0614396B8/pt not_active IP Right Cessation
- 2006-08-02 EP EP06782175.1A patent/EP1920790B1/en not_active Not-in-force
- 2006-08-02 CA CA2617977A patent/CA2617977C/en not_active Expired - Fee Related
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10113384A (ja) * | 1996-10-14 | 1998-05-06 | Yoshihiko Shimizu | 医用代替膜及びその製造方法 |
JPH10265590A (ja) * | 1997-03-26 | 1998-10-06 | Bmg Kk | 生体吸収性熱処理ゼラチンフィルム |
JPH11279296A (ja) * | 1998-03-25 | 1999-10-12 | Bmg:Kk | 生体吸収性熱処理ゼラチンおよびコラーゲンシート |
JP2004065780A (ja) * | 2002-08-08 | 2004-03-04 | Gunze Ltd | 生体材料およびそれを用いた癒着防止材 |
JP2004117831A (ja) * | 2002-09-26 | 2004-04-15 | Shin Etsu Polymer Co Ltd | 透明衝撃緩和部材および透明積層体 |
JP2004209228A (ja) * | 2002-12-16 | 2004-07-29 | Gunze Ltd | 医療用フィルム |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013018864A1 (ja) * | 2011-08-03 | 2013-02-07 | グンゼ株式会社 | 癒着防止膜 |
JPWO2013018864A1 (ja) * | 2011-08-03 | 2015-03-05 | グンゼ株式会社 | 癒着防止膜 |
JP2013226166A (ja) * | 2012-04-24 | 2013-11-07 | Gunze Ltd | 生体吸収性癒着防止材料 |
Also Published As
Publication number | Publication date |
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EP1920790A1 (en) | 2008-05-14 |
JP4917775B2 (ja) | 2012-04-18 |
AU2006277460B2 (en) | 2011-07-14 |
CN101232907B (zh) | 2012-12-26 |
AU2006277460A1 (en) | 2007-02-15 |
CA2617977A1 (en) | 2007-02-15 |
US8741969B2 (en) | 2014-06-03 |
EP1920790A4 (en) | 2011-12-14 |
BRPI0614396B8 (pt) | 2021-06-22 |
CA2617977C (en) | 2013-12-10 |
BRPI0614396A2 (pt) | 2011-03-29 |
CN101232907A (zh) | 2008-07-30 |
HK1119091A1 (en) | 2009-02-27 |
US20090099268A1 (en) | 2009-04-16 |
JP2007044080A (ja) | 2007-02-22 |
KR20080034181A (ko) | 2008-04-18 |
EP1920790B1 (en) | 2013-05-15 |
KR101291950B1 (ko) | 2013-07-31 |
BRPI0614396B1 (pt) | 2018-06-12 |
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