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41. 发明专利

JPH01308522A CATHETER FOR DIAGNOSTS AND TREATMENT 失效
公开(公告)号：JPH01308522A
公开(公告)日：1989-12-13
申请号：JP13875588
申请日：1988-06-06
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KANAZAWA SHINICHI , YOTSUYA SACHIRO , SOGAWA ICHIRO , KAMIMIYA TAKAFUMI , NIWA SHINICHIRO
IPC分类号： A61B18/20 , A61B1/00 , A61B17/22 , A61B18/24
摘要： PURPOSE:To rapidly and certainly perform diagnostic treatment according to working procedure even in a fine lumen, by forming a fine diameter part having at least one pipeline to a leading end part and making two or more optical fibers or tubes accessible to said fine diameter part. CONSTITUTION:A catheter 1 has a fine diameter part 2 provided to the leading end part thereof and two pipelines 5, 6 continuously extending from the leading end part of the fine diameter part 2 to the rear large diameter part 3 are provided in the catheter 1 and the pipeline 5 supplies gas to the fixed balloon 7 provided to the leading end part. The pipeline 6 is formed so as to have a diameter larger than that of the pipeline 5 and has a size capable of easily introducing all of a laser guide fiber 10, an endoscopic image fiber 11, a leading end control wire 12 and a blood excluding liquid bore 13 to be received in the catheter at the part passed through the fine diameter part 2. A plurality of optical fibers or tubes are allowed to stand by in a preliminarily arranged state with respect to the lesion part of a fine lumen and, at a necessary time, only the necessary optical fiber and tube can be inserted in the fine diameter part 2 selectively and instantaneously in an accessible manner.

42. 发明专利

JPH01307708A INCIDENT COUPLING STRUCTURE TO OPTICAL FIBER 失效
公开(公告)号：JPH01307708A
公开(公告)日：1989-12-12
申请号：JP13876188
申请日：1988-06-06
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KAMIMIYA TAKAFUMI , NIWA SHINICHIRO , YOTSUYA SACHIRO , SOGAWA ICHIRO , KANAZAWA SHINICHI
IPC分类号： G02B6/42
摘要： PURPOSE:To allow the incidence of high-energy laser light to an optical fiber by immersing the incident end face of the optical fiber on which the laser light is incident in an inert gas or liquid having low reaction activity and setting a refractive index distribution in this gas or liquid. CONSTITUTION:The incident end face 41 of the optical fiber 4 on which the laser light is incident is covered with an open container 2 and the inside of the container 2 is filled with the gas or the liquid having the low activity, for example, gaseous He. This gas is heated from the ambient by a heater 5 when the gas flows in the container 2. The temp. of the laser optical path is then made lower in the central part and increasingly higher nearer the circumference. Such a refractive index distribution in which the refractive index decreases increasingly toward the circumferential part from the central part is, therefore, realized. The laser light is converged to the central part in this way and is coupled with high efficiency to the optical fiber 4 at the incident surface 41.

43. 发明专利

JPH01305940A LASER OPERATION DEVICE FOR INSIDE VEIN 失效
公开(公告)号：JPH01305940A
公开(公告)日：1989-12-11
申请号：JP13814288
申请日：1988-06-04
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： SOGAWA ICHIRO , NIWA SHINICHIRO , YOTSUYA SACHIRO , KAMIMIYA TAKAFUMI , KANAZAWA SHINICHI
IPC分类号： A61B18/20
摘要： PURPOSE:To proceed the therapeutic operation, always confirming the diagnosis situation by allowing a catheter to be possessed of both of the endoscope fibers and laser light fibers. CONSTITUTION:In a catheter, an endoscope fibers 21 and the laser light irradiation fibers 24 are bound and fixed into a transparent medium 26. The catheter 2 is introduced into a vein. Hemostasis operation is executed by expanding a balloon 6, and a flush liquid is supplied to substituent blood and make the blood transparent, and observation on a monitor TV is carried out, and further the reduced output of the irradiation laser light is irradiated onto a tissue, and the spectrum diagnosis 3 is carried out by the fluorescent light spectrum obtained through the endoscope fibers 21, and the laser light is irradiated by driving a laser device 1, and a diseased part is destroyed. Since, at this time, the laser light can be irradiated, carrying out observation and diagnosis by using the endoscope fibers 21, it can be judged if the destroy can be carried out perfectly or not.

44. 发明专利

JP2001000844A POROUS FILTER AND ITS PRODUCTION 失效
公开(公告)号：JP2001000844A
公开(公告)日：2001-01-09
申请号：JP17789999
申请日：1999-06-24
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KANAZAWA SHINICHI , BESSHO HISAMI , NISHIMURA AKIRA
IPC分类号： B01D71/36 , B01J16/00
摘要： PROBLEM TO BE SOLVED: To permeate various kinds of liquids and gases into a stretched porous body of a polytetrafluoroethylene(PTFE) resin consisting of fibers and knots and to enable the efficient execution of chemical reaction by active materials by immobilizing the active materials to a hydrophilic resin layer formed on a resin surface inclusive of the inside of the porous body described above. SOLUTION: When the porous body filter for treating the liquids or gases passing the inside of the porous material by utilizing the chemical reaction of enzyme and catalyst is efficiently manufactured, the inside of the stretched porous filter of the PTFE resin is impregnated with the aqueous hydrophilic resin solution dispersed with the active materials and thereafter, the hydrophilic resin is crosslinked and fixed, by which the active materials are fixed to the PTFE surface. Polyvinyl alcohol(PVA), acrylate base resin, etc., are usable as the hydrophilic resin and if the PTFE porous filter is impregnated with the PVA, the phenomenon that the PVA is thinly and uniformly adsorbed on the PTFE surface appears and the formation of the uniform coating layer of the hydrophilic resin having a high space retaining property is facilitated.

45. 发明专利

JP2000033245A FLUORORESIN COMPOSITE MEMBRANE AND ITS PRODUCTION 失效
公开(公告)号：JP2000033245A
公开(公告)日：2000-02-02
申请号：JP2228999
申请日：1999-01-29
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KANAZAWA SHINICHI , MORITA TORU
IPC分类号： B01D63/06 , B01D63/10 , B01D63/14 , B01D69/12 , B01D71/36
摘要： PROBLEM TO BE SOLVED: To increase gas permeability and to bear a large intermembrane differential pressure by forming a multilayer structure in which at least one layer of porous membrane comprising a polytetrafluoroethylene and at least one layer of a nonporous membrane comprising a fluororesin are integrated. SOLUTION: A fluororesin composite membrane has a multilayer structure in which at least one layer of a porous polytetrafluoroethylene(PTFE) membrane 1 and at least one layer of a nonporous fluororesin membrane 2 are integrated. Namely, the membrane 1 has a fibrous structure in which numbers of fine fibers 4 are formed between a number of nodes, and a nonporous fluororesin membrane 2 is integrated on its surface. The porous membrane 1 functions mainly as a reinforcing layer. The nonporous membrane 2 functions as a gas permeable membrane and contributes to the separation or permeation of gas. the composite membrane is formed usually in the shape of a tube or a sheet.

46. 发明专利

JPH09173438A IN VIVO GRAFTING MATERIAL AND ITS MANUFACTURE 失效
公开(公告)号：JPH09173438A
公开(公告)日：1997-07-08
申请号：JP33472195
申请日：1995-12-22
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HAYASHI FUMIHIRO , KANAZAWA SHINICHI
IPC分类号： A61L27/00 , A61F2/04
摘要： PROBLEM TO BE SOLVED: To obtain an in vivo grafting material which holds the flexibility of a tetrafluoroethylene resin porous body, hardly causes an in vasion into tissue in a living body, has high tearing strength and be used for a septum in a living body. SOLUTION: A fluororesin coating layer 2 for blocking up holes between continuous knots from the inside of a porous body 1 is provided on the outer surface of a tetrafluoroethylene resin porous body 1 having a microfiber structure comprising knots connected to each other by the fiber, the fluororesin coating layer 2 is an in vivo grafting material having holes with a diameter of 0.05-0.5μm. The in vivo grafting material is manufactured by a method of sticking a porous drawn polytetrafluoroethylene sheet to the tetrafluoroethylene resin porous body 1 by hot pressing, or a method of applying fluororesin powder to the outer surface of the porous body and heating the same above a melting point to provide a fluororesin layer.

47. 发明专利

JPH0740442A METHOD OF STICKING POROUS TETRAFLUOROETHYLENE RESIN AND STRUCTURE THEREOF 失效
公开(公告)号：JPH0740442A
公开(公告)日：1995-02-10
申请号：JP20985893
申请日：1993-08-02
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KANAZAWA SHINICHI , HAYASHI FUMIHIRO
IPC分类号： B29C65/40 , B29C65/00 , B29C65/50 , B29K27/18 , B29K105/04 , C08J5/12
摘要： PURPOSE:To enable application to be performed to a hydrophilic porous body without impairing the porous structure by arranging thermoplastic resin having a specific melting point or lower, and subsequently compressing the part to be stuck at a temperature of the specific melting point or lower, and further permitting the melted thermoplastic resin to enter the porous cavities of a specific resin porous body. CONSTITUTION:This method is to stick porous tetrafluoroethylene resin each other. Folding back one end of a sheet-like porous tetrafluoroethylene resin(PTFE) 1, a sheet-like thermoplastic resin 5 is held in the recession of the folded end. The sheet-like thermoplastic resin 5 is superimposed on the external face of the folded end, and then one end of another sheet-like porous PTFE or another end 2 of the same sheet-like porous PTFE is laid thereon. Following this, the five-layered part is compressed from both the outsides at a temperature of molten point or higher and 250 deg.C or lower of the thermoplastic resin 5. As a result, they enter the porous cavities of the thermoplastic resin porous PTFE, thereby allowing the porous PTFE to be stuck each other.

48. 发明专利

JPH0724072A STENT AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JPH0724072A
公开(公告)日：1995-01-27
申请号：JP28574993
申请日：1993-10-20
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KANAZAWA SHINICHI
IPC分类号： A61L33/00 , A61F2/84 , A61M29/02
摘要： PURPOSE:To obtain a stent with excellent biocompatibility, especially antithrombogenesity, and least danger of renarrowing by setting up a cover layer consisting of a porous membrane of tetra-fluoroethylene resin on outer and inner faces of a tube-shaped structure composed of an elastic wire rod. CONSTITUTION:A tube-shaped structure is formed by bending down a stainless wire rod in zigzag and placing stainless coil wires in a circle on the ring formed at each bent part. The outer and inner faces are covered with porous tetrafluoroethylene membrane 1 and 2, and a stent rod is inserted into it and spot-adhered to make a stent. This stent can prevent in vivo blood flow and cell immersional wetting. For example, the blood flow interception is attempted for necrosis and suppression of growth of cancer by inserting the stent in a blood vessel branch corresponding to the affective part in medical treatment of malignant neoplasm or cancer, or it can be used for medical treatment to block the outflow of cancer cell to prevent metastasis of cancer.

49. 发明专利

JPH06228360A PRODUCTION OF COLORED POROUS POLYTETRAFLUOROETHYLENE OBJECT 失效
公开(公告)号：JPH06228360A
公开(公告)日：1994-08-16
申请号：JP4051093
申请日：1993-02-04
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KANAZAWA SHINICHI
IPC分类号： C08J9/42
摘要： PURPOSE:To provide method in which a colorant is used to produce a colored porous polytetrafluoroethylene object inhibited from suffering colorant bleeding without impairing the porosity and material properties of the porous object. CONSTITUTION:A porous polytetrafluoroethylene(PTFE) object having a finely porous structure consisting of fibers and nodes connected with one another by the fibers is coated with a solution obtained by dissolving or dispersing a colorant and PTFE particles in a solvent. At least the coated part is heated to or above the melting point of the PTFE to obtain the desired object.

50. 发明专利

JPH05176947A ARTIFICIAL BLOOD VESSEL AND ITS PRODUCTION 失效
公开(公告)号：JPH05176947A
公开(公告)日：1993-07-20
申请号：JP35992291
申请日：1991-12-26
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： KANAZAWA SHINICHI
IPC分类号： A61F2/06 , A61L27/00
摘要： PURPOSE:To provide the artificial blood vessel imparted with elasticity to puncture by combining a porous polytetrafluoroethylene(PTFE) tube with an elastic resin while maintaining various characteristics of the porous PTFE tube, such as surface characteristics, bioadaptability, flexibility and tensile strength. CONSTITUTION:This artificial blood vessel has the structure which is formed by laminating the elastic resin layer 2 on the inside surface of the porous PTFE tube 1 and in which the elastic resin layer 2 partly infiltrates the inside of the porous spaces on the inside surface side of the porous PTFE tube 1. This process for production of the artificial blood vessel having the structure laminated with the elastic resin layer 2 on the inside surface of the porous PTFE tube 1 consists in inserting the tube of the elastic resin 2 into the cavity of the porous PTFE tube 1, then heating the tube to melt a part or the whole of the tube of the elastic resin 2 and infiltrating a part of the molten elastic resin 2 into the porous spaces of the porous PTFE tube 1 from its inside surface side.

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