JP2004255044A - Humor treating apparatus - Google Patents

Humor treating apparatus Download PDF

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Publication number
JP2004255044A
JP2004255044A JP2003051401A JP2003051401A JP2004255044A JP 2004255044 A JP2004255044 A JP 2004255044A JP 2003051401 A JP2003051401 A JP 2003051401A JP 2003051401 A JP2003051401 A JP 2003051401A JP 2004255044 A JP2004255044 A JP 2004255044A
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Prior art keywords
laser light
housing
port
absorptivity
laser
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JP2003051401A
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JP4421827B2 (en
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Michio Abe
道夫 安部
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SB Kawasumi Laboratories Inc
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Kawasumi Laboratories Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/021—Manufacturing thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/021—Manufacturing thereof
    • B01D63/0233—Manufacturing thereof forming the bundle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12449—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being asymmetric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • B29C66/12464—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered being V-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/04—Specific sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/04—Specific sealing means
    • B01D2313/042—Adhesives or glues
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/168—Laser beams making use of an absorber or impact modifier placed at the interface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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    • B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a humor treating apparatus that can remove the cause of pollution of a clean room as a place of manufacturing as compared with a conventional ultrasonic welding. <P>SOLUTION: The humor treating apparatus (1A) is made by arranging a hollow thread bundle (5) in the length direction of the lumen of a housing (4), fixing both ends of the hollow thread bundle (5) to both inside peripheries of the housing (4) with a filler (3), and welding a port (1) to the end of the housing (4) by laser light (L). One of the two members of the port (1) and the housing (4) transmits the laser light (L) and the other absorbs the laser light (L). By making the absorbent member absorb the laser light (L) to perform heat evolution, the housing (4) is welded to the port (1). <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、血液透析、血液ろ過、血液透析ろ過、血漿分離等に用いられる体液処理装置であって、中空糸束をハウジングの内部に装填した体液処理装置の改良に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】
従来、血液透析、血液ろ過等で用いられる体液処理装置のポートのハウジングへの固定方法には▲１▼超音波溶着機により溶着固定する手段、▲２▼ハウジングの外周端部及びポートの内周に相互嵌合できるネジを形成し締め込む手段がある。
前記▲１▼超音波溶着機により溶着固定する手段の場合、ポートとハウジングの溶着部に振動を与えて発熱溶着させる為、微小な樹脂紛が発生し、製造場所であるクリーンルームの汚染の原因となっている。
また超音波の発振が不足したり又過剰になると、溶着部に隙間が生じ体液漏れが起きることが懸念される。
【０００３】
前記▲２▼ハウジングの外周端部及びポートの内周に相互嵌合できるネジを形成し締め込む手段の場合、滅菌時または輸送時に、ポートとハウジングの緩みが生じ、前記同様体液漏れが起きることが懸念される。この対策として、前記ネジ部を溶剤等で接着したり、超音波で溶着している。
体液処理装置を高圧蒸気滅菌した後、前記ネジ部に水滴が残り、除去のために乾燥を長時間行う必要がある。
【０００４】
例えば特許文献１のように、ポートとハウジングの装着手段は前記段落番号［０００２］で記載した手段があり微小な樹脂紛が発生、超音波発振の過不足による溶着部の割れ及び液漏れが懸念される。
【特許文献１】
特開２０００−４２１００公報（第２図、［００３８］、［００４０］）
【０００５】
【課題を解決する為の手段】
そこで本発明者は以上の課題を解決する為に、鋭意検討を重ねた結果次の発明に到達した。
［１］本発明は、ハウジング（４）の内空長さ方向に、中空糸束（５）を配置し、該中空糸束（５）の両端を、充填剤（３）で前記ハウジング（４）両端内周に固着し、
前記ハウジング（４）の端部に、ポート（１）をレーザー光（Ｌ）で溶着した体液処理装置（１Ａ）を提供する。
［２］本発明は、前記ポート（１）とハウジング（４）の二つの部材のうち一方は、前記レーザー光（Ｌ）の透過性を有する部材であり、他方は前記レーザー光（Ｌ）の吸収性を有する部材であり、前記レーザー光（Ｌ）を当該レーザー光の吸収性を有する部材に吸収させて発熱させることにより前記ポート（１）にハウジング（４）を溶着させた前記［１］に記載の体液処理装置（１Ａ）を提供する。
［３］本発明は、前記レーザー光（Ｌ）の照射側に前記レーザー光（Ｌ）の透過性を有する部材を配置し、前記レーザー光（Ｌ）の透過性を有する部材の反対側に前記透過性を有する部材に接触するように、前記レーザー光（Ｌ）の吸収性を有する部材を配置した前記［１］ないし［２］に記載の体液処理装置（１Ａ）を提供する。
［４］本発明は、前記［２］、［３］に記載のレーザー光（Ｌ）の吸収性を有する部材が、▲１▼レーザー光（Ｌ）の吸収性を有する材料そのもの、または▲２▼レーザー光（Ｌ）の透過性を有する材料に前記レーザー光（Ｌ）の吸収性を有する微粉末を添加した材料である前記［１］ないし［３］に記載の体液処理装置（１Ａ）を提供する。
［５］本発明は、レーザー光の透過性を有する材料からなるハウジング（４）とポート１の溶着部（１４、１４ａ）の間に、
（Ａ）レーザー光（Ｌ）の吸収性を有する合成樹脂、または
（Ｂ）レーザー光（Ｌ）の透過性を有する合成樹脂に、レーザー光（Ｌ）の吸収性を有する微粉末を添加した合成樹脂、または
（Ｃ）レーザー光（Ｌ）の吸収性を有する合成樹脂フィルムまたは塗料、
何れかのレーザー吸収性部材を介在させ、レーザー光（Ｌ）をポート（１）に照射して、前記（Ａ）（Ｂ）（Ｃ）のレーザー光の吸収性を有する部材に吸収させて発熱させることにおいて、前記ポート（１）とハウジング（４）を溶着した前記［１］に記載の体液処理装置（１Ａ）を提供する。
［６］本発明は、前記ポート（１）とハウジング（４）は、前記レーザー光（Ｌ）の透過性を有する部材であり、前記ハウジング（４）の内周端部にフランジ（６）を装着し、当該フランジ（６）を前記レーザー光の吸収性を有する合成樹脂、またはレーザー光の透過性を有する合成樹脂にレーザー光の吸収性を有する微粉末を添加した合成樹脂より形成した前記［１］に記載の体液処理装置（１Ａ）を提供する。
［７］本発明は、前記レーザー光の吸収性を有する材料は、前記ポート（１）とハウジング（４）のレーザー光の透過性を有する材料よりも融点の低い材料である前記［１］ないし［６］に記載の体液処理装置（１Ａ）を提供する。
【０００６】
【発明の実施の形態】
図１は本発明の体液処理装置１Ａの概略図である。図２はポート１とハウジング４のレーザー溶着部Ａ近傍の拡大図である。図３は前記レーザー溶着部Ａのその他の実施例を示すレーザー溶着部Ｂ近傍の拡大図、図４は前記レーザー溶着部Ｂのその他の実施例を示すレーザー溶着部Ｃ近傍の拡大図、図５は前記レーザー溶着部Ｃのその他の実施例を示すレーザー溶着部Ｄ近傍の拡大図である。
［体液処理装置１Ａ］
本発明の体液処理装置１Ａは略円盤状のポート１と略円筒形のハウジング４と中空糸束５から構成されている。
前記ポート１は端面中央部に体液の流出入口１ａが形成され、他端面の内周にＯ−リング２が装着されている。
前記ハウジング４は両端外周に垂直に延設した透析液流出入口４ａが形成されている。
前記中空糸束５は中空糸状の透析膜５ａを円筒形に束ね、前記中空糸束５の両端は充填剤３を介して前記ハウジング４内に収納し固定されている。
体液処理装置１Ａはハウジング４の内空の長さ方向に、中空糸束５を配置し、該中空糸束５の端部を、充填剤３でハウジング４端部内周に固着し、前記ハウジング４の端部にポート１を装着しレーザー光で溶着されている。
【０００７】
［レーザー光溶着の原理］
レーザー光溶着の原理は、（１）ポート１とハウジング４の二つの部材のうち一方はレーザー光の透過性を有する部材（以下「透過性部材」と略記する）であり、他方は前記レーザー光の吸収性を有する部材（以下「吸収性部材」と略記する）であり、前記レーザー光を当該吸収性部材に吸収させて発熱させることにより前記ポート１にハウジング４を溶着させる。
（２）レーザー光の透過性を有する部材からなるハウジング４とポート１の溶着部１４（１４ａ）の間に、レーザー光の吸収性を有する部材を介在させて、レーザー光をポート１の外周に照射して、前記レーザー光の吸収性を有する部材に吸収させて発熱させることにより前記ポート１とハウジング４を溶着させる。
【０００８】
前記レーザー光（Ｌ）の吸収性を有する部材が、▲１▼レーザー光（Ｌ）の吸収性を有する材料そのもの、または▲２▼レーザー光（Ｌ）の透過性を有する材料に前記レーザー光（Ｌ）の吸収性を有する微粉末を添加した材料であり、照射したレーザー光は、少なくとも前記レーザー光の吸収性を有する材料に吸収させて発熱させることにより溶着させる。
【０００９】
本発明の体液処理装置１Ａのレーザー光の吸収性を有する合成樹脂は、前記ハウジング４とポート１のレーザー光の透過性を有する合成樹脂よりも融点の低い合成樹脂を使用することが好ましい。前記レーザー光の吸収性を有する合成樹脂は、前記レーザー光の透過性を有する合成樹脂より融点の低い合成樹脂であることにより、照射するレーザー光の熱量が少なくても溶着することができ、前記ハウジング４とポート１の透過性樹脂の融点よりも低い温度で溶融する為前記ポート１とハウジング４の変形がなく溶着することができる。
【００１０】
［ポート１とハウジング４の直接溶着の一例］
本発明の体液処理装置１Ａのハウジング４は前記透過性部材で形成し、ポート１は吸収性部材で形成されている。
体液処理装置１Ａは、レーザー光（Ｌ）の照射側に前記レーザー光（Ｌ）の透過性を有する部材を配置し、前記レーザー光（Ｌ）の透過性を有する部材の反対側に、透過性を有する部材に接触するように前記レーザー光（Ｌ）の吸収性を有する部材を配置する。
前記ポート１の後端面は、後端の内側から外側に向け鋭角に形成され、前記ハウジング４の形状は、該ハウジング４の端部外周に鋭角な斜面４ｃを備えた突部４ｂが形成されている。前記斜面４ｃは前記ポート１の後端面と直接接合されている。前記ポート１と前記ハウジング４の形状はレーザー光溶着をする上で好ましい形状である。
前記ハウジング４にポート１を装着し、前記ポート１を前記ハウジング４の長さ方向に押圧して、前記ポート１の後端面と前記斜面４ｃを密着させ、レーザー光（Ｌ）を前記突部４ｂの外周に向けて照射する。前記レーザー光（Ｌ）は前記突部４ｂを透過して前記ポート１の接合面に吸収させ発熱させることにより前記ポート１の後端面と前記ハウジング４の斜面４ｃが直接溶着される。
【００１１】
［ポート１とハウジング４の溶着部１４、１４ａに各吸収性部材を介在して溶着する手段の一例］
前記レーザー光の透過性を有する材料からなるハウジング（４）とポート１の溶着部（１４、１４ａ）の間に、（Ａ）レーザー光の吸収性を有する合成樹脂、または（Ｂ）透過性を有する合成樹脂にレーザー光の吸収性を有する微粉末を添加した合成樹脂、または（Ｃ）レーザー光の吸収性を有する合成樹脂フィルムまたは塗料、何れかのレーザー吸収性樹脂を介在させ、レーザー光Ｌをポート１に照射して、前記（Ａ）（Ｂ）（Ｃ）のレーザー光の吸収性を有する部材に吸収させて発熱させることにおいて、前記ポート１とハウジング４を溶着することができる。
【００１２】
図３に例示するように溶着部１４は、前記ハウジング４の外周端部と前記ポート１の間に形成され、前記溶着部１４に前記各レーザー吸収性樹脂を介在させて照射するレーザー光（Ｌ）は、前記ポート１の外周に向けて照射する。
図４に例示するように溶着部１４ａは、前記ハウジング４の端面と前記ポート１の間に形成され、前記溶着部１４ａに前記各レーザー吸収性樹脂を介在させて照射するレーザー光（Ｌ）は、前記ポート１の肩部１ｂに向けて照射する。
【００１３】
前記（Ａ）レーザー光の吸収性を有する合成樹脂（吸収性樹脂）は、一度当該吸収性樹脂を溶融して前記溶着部１４（１４ａ）に介在させる。
照射したレーザー光（Ｌ）は前記ポート１を透過して、前記溶着部１４（１４ａ）に介在した吸収性樹脂に吸収させ発熱させて溶着する。
前記溶着部１４（１４ａ）に前記（Ｂ）透過性を有する合成樹脂に、レーザー光の吸収性を有する微粉末を添加した合成樹脂（以下「吸収性樹脂（微粉末添加）」と略記する）を介在させる。当該吸収性樹脂（微粉末添加）は、レーザー光を吸収する合成樹脂となる。従って照射したレーザー光（Ｌ）は前記（Ａ）の吸収性樹脂と同様に、前記ポート１を透過して、前記溶着部１４（１４ａ）に介在した吸収性樹脂（微粉末添加）に吸収させ発熱させて溶着する。
前記溶着部１４（１４ａ）に前記（Ｃ）レーザー光の吸収性を有する合成樹脂（吸収性樹脂）フィルムまたは塗料を介在させることができる。前記吸収性樹脂をフィルム状または塗料に加工して、前記溶着部１４（１４ａ）の前記ハウジング４の両端外周またはポート１の円周内面に前記フィルムを装着または前記塗料を塗布する。照射したレーザー光（Ｌ）は、前記（Ａ）吸収性樹脂及び（Ｂ）吸収性樹脂（微粉末添加）と同様に、前記ポート１を透過して、フィルム状または塗料に加工した吸収性樹脂に吸収させ発熱させて溶着する。
【００１４】
［フランジ６］
前記ポート１とハウジング４は、前記レーザー光（Ｌ）の透過性を有する部材であり、前記ハウジング４の内周端部にフランジ６を装着し、当該フランジ６を前記レーザー光の吸収性を有する合成樹脂、またはレーザー光の透過性を有する合成樹脂にレーザー光の吸収性を有する微粉末を添加した合成樹脂より形成して装着している。
図５に例示するようにハウジング４の内周端部に前記フランジ６を装着し、前記フランジ４の端部にポート１を装着する。レーザー光（Ｌ）を前記ポート１の肩部１ｂに照射すると、前記レーザー光はポート１を透過して前記フランジ６に吸収され、発熱して前記ポート１と前記フランジ６が溶着されることで、ハウジング４と溶着される。
【００１５】
［透過性樹脂の材質］
透過性樹脂の材質は例えばポリプロピレン、ポリエチレン、ポリカーボネート、アクリル、ポリスチレン、ＰＥＴ等を採用することができる。前記透過性樹脂は少なくともレーザー光の透過性を有し且つ熱可塑性の樹脂であれば何でも採用することができる。なお前記ＰＥＴは、後述する吸収性樹脂（微粉末添加）のＰＥＴとのみ熱溶着できる。
［吸収性樹脂の材質］
吸収性樹脂の材質はポリエチレン、エチレン・酢酸ビニル共重合体、アイオノマー等を採用することができる。
［吸収性樹脂（微粉末添加）の材質］
吸収性樹脂（微粉末添加）の材質は、前記透過性樹脂であるポリプロピレン、ポリエチレン、ポリカーボネート、アクリル、ポリスチレン、ＰＥＴに、吸収性を有するの微粉末を添加する。前記微粉末は例えばシリカ、ゼオライト、カーボン等を採用することができる。
【００１６】
［レーザー溶着部Ａに使用する材質の実施例］
前記図２に例示するレーザー溶着部Ａは、ハウジング４を例えばポリプロピレン、ポリエチレンのオレフィン系樹脂を採用することが好ましい。ポート１は前記オレフィン系樹脂の透過性樹脂にレーザー光の吸収性を有する微粉末、例えばシリカ、ゼオライト、カーボンの微粉末を添加することが好ましい。
［レーザー溶着部Ｂ（Ｃ）に使用する材質の実施例］
前記図３、４に例示するレーザー溶着部Ｂ（Ｃ）は、前記ハウジング４及びポート１を例えばポリプロピレン、ポリエチレンのオレフィン系樹脂を採用した時、前記段落番号［００１３］に記載の（Ａ）の手段において、前記ハウジング４及びポート１がポリプロピレンの場合、溶着部１４（１４ａ）に介在させる吸収性樹脂はポリエチレン、エチレン・酢酸ビニル共重合体、アイオノマー等か好ましい。
前記ハウジング４及びポート１がポリエチレンの場合、前記吸収性樹脂はエチレン・酢酸ビニル共重合体、アイオノマー等か好ましい。
前記（Ｂ）の手段において、前記ハウジング４及びポート１が、例えばポリプロピレン、ポリエチレンのオレフィン系樹脂を採用することが好ましい。前記オレフィン系樹脂の透過性樹脂にレーザー光の吸収性を有する微粉末は、例えばシリカ、ゼオライト、カーボンで、当該微粉末を添加して吸収性樹脂として前記溶着部１４（１４ａ）に介在することが好ましい。
前記（Ｃ）の手段において、前記ハウジング４及びポート１がポリプロピレンの場合、前記フィルムまたは塗料はポリプロピレン、エチレン・酢酸ビニル共重合体、アイオノマーに前記微粉末のシリカ、ゼオライト、カーボンを添加したフィルムまたは塗料が好ましい。
前記ハウジング４及びポート１がポリエチレンの場合、前記フィルムまたは塗料はポリエチレン、エチレン・酢酸ビニル共重合体、アイオノマーに前記微粉末のシリカ、ゼオライト、カーボンを添加したフィルムまたは塗料が好ましい。
［レーザー溶着部Ｄに使用する材質の実施例］
前記図５に例示するレーザー溶着部Ｄは、前記ハウジング４及びポート１を例えばポリプロピレン、ポリエチレンのオレフィン系樹脂を採用することが好ましい。フランジ６は前記オレフィン系樹脂の透過性樹脂にレーザー光の吸収性を有する微粉末、例えばシリカ、ゼオライト、カーボンの微粉末を添加して形成することが好ましい。
【００１７】
［透過性樹脂より低融点の吸収性樹脂の材質の一例］
レーザー光の吸収性を有する合成樹脂は、前記ポート１とハウジング４のレーザー光の透過性を有する合成樹脂よりも融点の低い合成樹脂が好ましい。
前記ハウジング４および／またはポート１がポリプロピレンの場合、吸収性樹脂はポリエチレン、エチレン・酢酸ビニル共重合体、アイオノマー等か好ましい。
前記ハウジング４および／またはポート１がポリエチレンの場合、吸収性樹脂はエチレン・酢酸ビニル共重合体、アイオノマー等か好ましい。
【００１８】
二つの部材のうちポート１とハウジング４の一方は、レーザー光の透過性を有する部材であり、他方に前記レーザー光の吸収性を有する部材であり、前記レーザー光（Ｌ）を当該レーザー光の吸収性を有する部材に吸収させて発熱させることにより前記ポート１にハウジング４を溶着させることができれば、血液透析、血液ろ過、血液透析ろ過、血漿分離等の体液処理装置のほかに、例えば前記ポート１に代えてキャップ、カバー等の部材を装着して、レーザー光を照射して吸収性樹脂の部材で吸収し発熱し溶着することができれば特に形状は限定しない。
【００１９】
【発明の作用効果】
▲１▼ポート１とハウジング４の二つの部材のうち一方は前記レーザー光の透過性を有する部材であり、他方は前記レーザー光の吸収性を有する部材であり、レーザー光が当該吸収性を有する部材に吸収され発熱して溶着することにより、従来の超音波溶着に比べて微小な樹脂紛の発生がなくなり、製造場所であるクリーンルームの汚染の原因を取り除くことができた。また超音波の発振不足や過剰発振により、溶着部に隙間が生じ体液漏れが起きることが解消される。
▲２▼さらにハウジングとポートが相互嵌合できるネジを形成し締め込む手段に比べて、輸送時や高圧蒸気滅菌後のネジの緩み、または高圧蒸気滅菌によるネジ部分に発生する水滴除去のための乾燥等余分な工程を組込む必要がなくなる。
▲３▼本発明の体液処理装置１Ａのレーザー光の吸収性を有する合成樹脂は、前記ハウジング４とポート１のレーザー光の透過性を有する合成樹脂よりも融点の低い合成樹脂であることにより、照射するレーザー光の熱量が少なくても溶着することができ前記ポート１とハウジング４の変形がなく溶着することができる。
【図面の簡単な説明】
【図１】本発明の体液処理装置１の概略図
【図２】ポート１とハウジング４の溶着部Ａ近傍の拡大図
【図３】前記レーザー溶着部Ａのその他の実施例を示す溶着部Ｂ近傍の拡大図
【図４】前記レーザー溶着部Ｂのその他の実施例を示す溶着部Ｃ近傍の拡大図
【図５】前記レーザー溶着部Ｃのその他の実施例を示す溶着部Ｄ近傍の拡大図
【符号の説明】
１Ａ 体液処理装置
１ ポート
１ａ 流出入口
１ｂ 肩部
２ Ｏ−リング
３ 充填剤
４ ハウジング
４ａ 透析液流出入口
４ｂ 突部
４ｃ 斜面
５ 中空糸束
５ａ 透析膜
６ フランジ
１４、１４ａ 溶着部
Ａ、Ｂ、Ｃ、Ｄ レーザー溶着部
Ｌ レーザー光[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a body fluid treatment device used for hemodialysis, hemofiltration, hemodiafiltration, plasma separation, and the like, and relates to an improvement of a body fluid treatment device in which a hollow fiber bundle is loaded inside a housing.
[0002]
Problems to be solved by the prior art and the invention
Conventionally, a method of fixing a port of a body fluid treatment device used in hemodialysis, hemofiltration, etc. to a housing includes (1) means for welding and fixing by an ultrasonic welding machine, (2) outer peripheral end of the housing and inner periphery of the port. There is a means for forming and tightening a screw which can be fitted to each other.
(1) In the case of means for welding and fixing by means of an ultrasonic welding machine, vibration is applied to the welding portion of the port and the housing to cause heat welding, so that fine resin powder is generated, which causes contamination of the clean room as a manufacturing place. Has become.
Further, if the oscillation of the ultrasonic waves is insufficient or excessive, there is a concern that a gap may be formed in the welded portion and body fluid may leak.
[0003]
(2) In the case of means for forming and tightening a screw that can be fitted to the outer peripheral end of the housing and the inner periphery of the port, the port and the housing may be loosened during sterilization or transportation, and body fluid leakage may occur as described above. Is concerned. As a countermeasure, the screw portion is bonded with a solvent or the like or welded by ultrasonic waves.
After the body fluid treatment device is subjected to high-pressure steam sterilization, water droplets remain on the screw portion, and it is necessary to perform drying for a long time for removal.
[0004]
For example, as in Patent Document 1, there is a means for mounting the port and the housing as described in the paragraph number [0002], and fine resin powder is generated, and there is a concern that cracks in the welded portion and liquid leakage due to excessive or insufficient ultrasonic oscillation. Is done.
[Patent Document 1]
JP-A-2000-42100 (FIG. 2, [0038], [0040])
[0005]
[Means for solving the problem]
The inventor of the present invention has made intensive studies to solve the above-described problems, and as a result, has arrived at the next invention.
[1] In the present invention, a hollow fiber bundle (5) is arranged in a length direction of the inner space of a housing (4), and both ends of the hollow fiber bundle (5) are filled with a filler (3) in the housing (4). ) Adhered to the inner circumference of both ends,
A body fluid treatment device (1A) is provided in which a port (1) is welded to an end of the housing (4) with a laser beam (L).
[2] In the present invention, one of the two members, the port (1) and the housing (4), is a member having transparency of the laser beam (L), and the other is a member having a transmittance for the laser beam (L). [1] wherein the housing (4) is welded to the port (1) by causing the laser beam (L) to be absorbed by the laser beam absorbing member and generating heat by absorbing the laser beam (L). The body fluid treatment device (1A) according to the above is provided.
[3] In the present invention, a member having transparency of the laser light (L) is arranged on the irradiation side of the laser light (L), and the member having a transparency of the laser light (L) is arranged on the opposite side. The body fluid treatment device (1A) according to [1] or [2], wherein a member having absorptivity of the laser light (L) is arranged so as to be in contact with a member having a transmissive property.
[4] In the present invention, the member having the absorptivity of the laser beam (L) according to the above [2] or [3] may be (1) a material itself having the absorptivity of the laser beam (L) or (2) ▼ The body fluid treatment device (1A) according to any one of the above [1] to [3], which is a material obtained by adding a fine powder having a laser light (L) absorbing property to a material having a laser light (L) transmitting property. provide.
[5] The present invention provides a method in which a housing (4) made of a material having laser light permeability and a welded portion (14, 14a) of a port 1 are provided.
Synthesis of (A) a synthetic resin having laser light (L) absorption properties or (B) a synthetic resin having laser light (L) transmission properties, to which fine powder having laser light (L) absorption properties is added. Resin, or (C) a synthetic resin film or paint having laser light (L) absorbency,
The laser beam (L) is irradiated to the port (1) through any one of the laser absorbing members, and the port (1) absorbs the laser beam (A), (B), and (C) to generate heat. In this case, the body fluid treatment device (1A) according to [1], wherein the port (1) and the housing (4) are welded.
[6] In the present invention, the port (1) and the housing (4) are members having transparency of the laser beam (L), and a flange (6) is provided at an inner peripheral end of the housing (4). The flange (6) was formed from the synthetic resin having the laser light absorbing property or the synthetic resin obtained by adding a fine powder having the laser light absorbing property to the synthetic resin having the laser light transmitting property. [1] A body fluid treatment device (1A) according to [1].
[7] In the present invention, the material having a laser light absorbing property is a material having a lower melting point than a material having a laser light transmitting property of the port (1) and the housing (4). The body fluid treatment device (1A) according to [6] is provided.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a schematic view of a body fluid treatment apparatus 1A of the present invention. FIG. 2 is an enlarged view of the vicinity of the laser welding portion A between the port 1 and the housing 4. FIG. 3 is an enlarged view near a laser welded portion B showing another embodiment of the laser welded portion A, FIG. 4 is an enlarged view near a laser welded portion C showing another embodiment of the laser welded portion B, and FIG. FIG. 4 is an enlarged view of the vicinity of a laser welded portion D showing another embodiment of the laser welded portion C.
[Body fluid treatment device 1A]
The body fluid treatment device 1A of the present invention includes a substantially disk-shaped port 1, a substantially cylindrical housing 4, and a hollow fiber bundle 5.
The port 1 has an outflow / inlet 1a for bodily fluid formed at the center of the end face, and an O-ring 2 mounted on the inner periphery of the other end face.
The housing 4 has a dialysate outflow port 4a extending vertically at the outer periphery of both ends.
The hollow fiber bundle 5 bundles a hollow fiber dialysis membrane 5 a into a cylindrical shape, and both ends of the hollow fiber bundle 5 are housed and fixed in the housing 4 via a filler 3.
The body fluid treatment device 1A has a hollow fiber bundle 5 arranged in the longitudinal direction of the inner space of the housing 4, and the end of the hollow fiber bundle 5 is fixed to the inner periphery of the end of the housing 4 with a filler 3; The port 1 is attached to the end of the laser beam and is welded by a laser beam.
[0007]
[Principle of laser beam welding]
The principle of laser light welding is as follows: (1) One of the two members of the port 1 and the housing 4 is a member having a laser light transmitting property (hereinafter, abbreviated as “transmitting member”), and the other is the laser light. (Hereinafter, abbreviated as “absorbing member”), and the housing 4 is welded to the port 1 by causing the laser beam to be absorbed by the absorbing member to generate heat.
(2) A laser light absorbing member is interposed between the housing 4 made of a member having a laser light transmitting member and the welded portion 14 (14a) of the port 1 so that the laser light is applied to the outer periphery of the port 1. The port 1 and the housing 4 are welded by irradiating the laser beam and causing the member to absorb the laser light to generate heat.
[0008]
The member having absorptivity of the laser light (L) may be selected from the group consisting of (1) the material itself having the absorptivity of the laser light (L) or (2) the material having the absorptivity of the laser light (L). L) is a material to which fine powder having absorptivity is added, and the irradiated laser light is absorbed by at least the material having the absorptivity of the laser light to generate heat and weld.
[0009]
It is preferable to use a synthetic resin having a lower melting point than the synthetic resin having laser light permeability of the housing 4 and the port 1 for the synthetic resin having laser light absorbency of the body fluid treatment apparatus 1A of the present invention. The synthetic resin having absorptivity of the laser light is a synthetic resin having a lower melting point than the synthetic resin having the laser light transmissivity, so that it can be welded even with a small amount of heat of the irradiated laser light, Since the housing 4 and the port 1 are melted at a temperature lower than the melting point of the transparent resin, the port 1 and the housing 4 can be welded without deformation.
[0010]
[Example of direct welding of port 1 and housing 4]
The housing 4 of the body fluid treatment device 1A of the present invention is formed of the above-described permeable member, and the port 1 is formed of an absorbent member.
The body fluid treatment device 1A includes a member having the laser light (L) transmitting property disposed on the laser light (L) irradiation side, and a light transmitting property opposite to the laser light (L) transmitting member disposed on the opposite side. A member having absorptivity of the laser light (L) is arranged so as to be in contact with the member having the.
The rear end face of the port 1 is formed at an acute angle from the inside to the outside of the rear end, and the shape of the housing 4 is such that a projection 4b having an acute slope 4c is formed on the outer periphery of the end of the housing 4. I have. The slope 4c is directly joined to the rear end face of the port 1. The shapes of the port 1 and the housing 4 are preferable shapes for performing laser beam welding.
The port 1 is mounted on the housing 4, the port 1 is pressed in the longitudinal direction of the housing 4, the rear end face of the port 1 is brought into close contact with the slope 4c, and the laser beam (L) is projected on the projection 4b. Irradiation toward the outer periphery of. The laser beam (L) passes through the protrusion 4b and is absorbed by the joint surface of the port 1 to generate heat, so that the rear end surface of the port 1 and the slope 4c of the housing 4 are directly welded.
[0011]
[Example of Means for Welding Port 1 and Welding Portions 14 and 14a of Housing 4 with Each Absorbent Member Interposed]
Between the housing (4) made of the material having the laser light transmitting property and the welded portions (14, 14a) of the port 1, (A) a synthetic resin having laser light absorbing properties, or (B) a transmitting property. A synthetic resin obtained by adding a fine powder having absorptivity of laser light to a synthetic resin having the same, or (C) a synthetic resin film or paint having absorptivity of laser light, or a laser absorptive resin The port 1 and the housing 4 can be welded by irradiating the port 1 with the port 1 and causing the member (A), (B), and (C) to absorb the laser light and generate heat.
[0012]
As illustrated in FIG. 3, the welding portion 14 is formed between the outer peripheral end of the housing 4 and the port 1, and irradiates the welding portion 14 with the laser light (L ) Is directed toward the outer periphery of the port 1.
As illustrated in FIG. 4, the welding portion 14 a is formed between the end surface of the housing 4 and the port 1, and the laser beam (L) that irradiates the welding portion 14 a with the laser-absorbing resin interposed therebetween is used. Irradiates toward the shoulder 1b of the port 1.
[0013]
The (A) synthetic resin (absorbing resin) having absorptivity of laser light once melts the absorptive resin and intervenes in the welded portion 14 (14a).
The irradiated laser light (L) passes through the port 1 and is absorbed by the absorbent resin interposed in the welding portion 14 (14a), and generates heat to be welded.
Synthetic resin obtained by adding fine powder having laser light absorbability to the (B) transparent synthetic resin in the welded portion 14 (14a) (hereinafter abbreviated as "absorbent resin (fine powder addition)") Intervene. The absorbing resin (addition of fine powder) becomes a synthetic resin that absorbs laser light. Therefore, the irradiated laser beam (L) passes through the port 1 and is absorbed by the absorbing resin (fine powder addition) interposed in the welding portion 14 (14a), similarly to the absorbing resin (A). Generates heat and welds.
The (C) synthetic resin (absorbent resin) film or paint having laser light absorbability can be interposed in the welded portion 14 (14a). The absorbent resin is processed into a film or paint, and the film is mounted or the paint is applied to the outer periphery of both ends of the housing 4 or the inner peripheral surface of the port 1 of the welding portion 14 (14a). The irradiated laser light (L) passes through the port 1 and is processed into a film-like or paint-like absorbent resin in the same manner as (A) the absorbent resin and (B) the absorbent resin (fine powder added). And generate heat to fuse.
[0014]
[Flange 6]
The port 1 and the housing 4 are members having a property of transmitting the laser light (L). A flange 6 is attached to an inner peripheral end of the housing 4, and the flange 6 has an absorptivity of the laser light. It is formed and attached from a synthetic resin or a synthetic resin having a laser light transmitting property and a fine powder having a laser light absorbing property added thereto.
As illustrated in FIG. 5, the flange 6 is attached to the inner peripheral end of the housing 4, and the port 1 is attached to the end of the flange 4. When a laser beam (L) is applied to the shoulder 1b of the port 1, the laser beam passes through the port 1 and is absorbed by the flange 6 to generate heat, so that the port 1 and the flange 6 are welded. Is welded to the housing 4.
[0015]
[Material of permeable resin]
As the material of the transparent resin, for example, polypropylene, polyethylene, polycarbonate, acrylic, polystyrene, PET, or the like can be adopted. As the transparent resin, any resin can be used as long as it has at least laser beam transmission properties and is a thermoplastic resin. Note that the PET can be heat-welded only to PET of an absorbent resin (addition of fine powder) described later.
[Material of absorbent resin]
As the material of the absorbent resin, polyethylene, ethylene / vinyl acetate copolymer, ionomer and the like can be adopted.
[Material of absorbent resin (fine powder added)]
As a material of the absorbent resin (addition of fine powder), fine powder having absorbency is added to the above-mentioned transparent resin such as polypropylene, polyethylene, polycarbonate, acryl, polystyrene, and PET. As the fine powder, for example, silica, zeolite, carbon and the like can be adopted.
[0016]
[Example of material used for laser welding part A]
In the laser welded portion A illustrated in FIG. 2, the housing 4 is preferably made of, for example, an olefin resin such as polypropylene or polyethylene. In the port 1, it is preferable to add a fine powder having absorptivity of laser light, for example, a fine powder of silica, zeolite, or carbon to the transparent resin of the olefin resin.
[Example of material used for laser welded part B (C)]
When the housing 4 and the port 1 are made of, for example, an olefin resin such as polypropylene or polyethylene, the laser-welded portion B (C) illustrated in FIGS. When the housing 4 and the port 1 are made of polypropylene, the absorbent resin interposed in the welding portion 14 (14a) is preferably polyethylene, ethylene / vinyl acetate copolymer, ionomer, or the like.
When the housing 4 and the port 1 are made of polyethylene, the absorbent resin is preferably an ethylene / vinyl acetate copolymer, an ionomer, or the like.
In the means (B), it is preferable that the housing 4 and the port 1 employ an olefin resin such as polypropylene or polyethylene. The fine powder having a laser light absorbing property in the olefin resin transparent resin is, for example, silica, zeolite, or carbon. The fine powder is added and interposed in the welding portion 14 (14a) as the absorbing resin. Is preferred.
In the means (C), when the housing 4 and the port 1 are made of polypropylene, the film or coating is made of polypropylene, an ethylene / vinyl acetate copolymer, a film obtained by adding the fine powder of silica, zeolite or carbon to an ionomer or Paints are preferred.
When the housing 4 and the port 1 are made of polyethylene, the film or paint is preferably a film or paint obtained by adding the fine powder of silica, zeolite, or carbon to polyethylene, ethylene / vinyl acetate copolymer, or ionomer.
[Example of material used for laser welding part D]
In the laser welding portion D illustrated in FIG. 5, it is preferable that the housing 4 and the port 1 employ, for example, an olefin resin such as polypropylene or polyethylene. The flange 6 is preferably formed by adding a fine powder having absorptivity of laser light, for example, a fine powder of silica, zeolite, or carbon to the transparent resin of the olefin resin.
[0017]
[An example of an absorbent resin material having a lower melting point than the transparent resin]
The synthetic resin having a laser light absorbing property is preferably a synthetic resin having a lower melting point than the synthetic resin having the laser light transmitting property of the port 1 and the housing 4.
When the housing 4 and / or the port 1 are made of polypropylene, the absorbent resin is preferably polyethylene, ethylene / vinyl acetate copolymer, ionomer, or the like.
When the housing 4 and / or the port 1 are made of polyethylene, the absorbent resin is preferably an ethylene / vinyl acetate copolymer, an ionomer, or the like.
[0018]
Of the two members, one of the port 1 and the housing 4 is a member having a laser light transmitting property, and the other is a member having the laser light absorbing property. If the housing 4 can be welded to the port 1 by absorbing heat and absorbing heat by a member having an absorptive property, in addition to the body fluid processing device such as hemodialysis, blood filtration, hemodiafiltration, and plasma separation, for example, the port The shape is not particularly limited as long as a member such as a cap and a cover can be mounted instead of 1 and laser light can be applied to absorb and generate heat by welding with an absorptive resin member.
[0019]
Effects of the Invention
{Circle around (1)} One of the two members of the port 1 and the housing 4 is a member having the laser light transmitting property, the other is a member having the laser light absorbing property, and the laser light has the absorbing property. As a result of being absorbed by the members and being heated and welded, the generation of fine resin powder was eliminated as compared with conventional ultrasonic welding, and the cause of contamination in the clean room, which is the manufacturing location, could be eliminated. In addition, it is possible to prevent a gap from being generated in the welded portion due to insufficient or excessive oscillation of ultrasonic waves, thereby preventing body fluid leakage.
(2) Compared to means for forming and tightening a screw that allows the housing and port to fit together, loosening of the screw during transportation or after high-pressure steam sterilization, or removal of water droplets generated on the screw portion due to high-pressure steam sterilization. There is no need to incorporate extra steps such as drying.
{Circle around (3)} The synthetic resin having a laser light absorbing property of the body fluid treatment apparatus 1A of the present invention is a synthetic resin having a lower melting point than the synthetic resin having the laser light transmitting property of the housing 4 and the port 1; Even if the amount of heat of the laser beam to be irradiated is small, welding can be performed, and the port 1 and the housing 4 can be welded without deformation.
[Brief description of the drawings]
FIG. 1 is a schematic view of a body fluid treatment apparatus 1 of the present invention. FIG. 2 is an enlarged view of the vicinity of a welded portion A between a port 1 and a housing 4. FIG. 3 is a welded portion B showing another embodiment of the laser welded portion A. FIG. 4 is an enlarged view of a vicinity of a welded portion C showing another embodiment of the laser welded portion B. FIG. 5 is an enlarged view of a vicinity of a welded portion D showing another embodiment of the laser welded portion C. [Explanation of symbols]
1A Body Fluid Treatment Device 1 Port 1a Outlet 1b Shoulder 2 O-ring 3 Filler 4 Housing 4a Dialysate Outlet 4b Protrusion 4c Slope 5 Hollow Fiber Bundle 5a Dialysis Membrane 6 Flange 14, 14a Welding Parts A, B, C , D Laser welding part L Laser light

Claims (7)

ハウジング（４）の内空長さ方向に、中空糸束（５）を配置し、該中空糸束（５）の両端を、充填剤（３）で前記ハウジング（４）両端内周に固着し、
前記ハウジング（４）の端部に、ポート（１）をレーザー光（Ｌ）で溶着したことを特徴とする体液処理装置（１Ａ）。A hollow fiber bundle (5) is arranged in the inner space length direction of the housing (4), and both ends of the hollow fiber bundle (5) are fixed to the inner periphery of both ends of the housing (4) with a filler (3). ,
A body fluid treatment device (1A), wherein a port (1) is welded to an end of the housing (4) with a laser beam (L). 前記ポート（１）とハウジング（４）の二つの部材のうち一方は、前記レーザー光（Ｌ）の透過性を有する部材であり、他方は前記レーザー光（Ｌ）の吸収性を有する部材であり、前記レーザー光（Ｌ）を当該レーザー光の吸収性を有する部材に吸収させて発熱させることにより前記ポート（１）にハウジング（４）を溶着させたことを特徴とする前記請求項１に記載の体液処理装置（１Ａ）。One of the two members, the port (1) and the housing (4), is a member having a transmittance of the laser light (L), and the other is a member having an absorptivity of the laser light (L). The housing (4) is welded to the port (1) by causing the laser light (L) to be absorbed by a member having absorptivity of the laser light to generate heat. (1A). 前記レーザー光（Ｌ）の照射側に前記レーザー光（Ｌ）の透過性を有する部材を配置し、前記レーザー光（Ｌ）の透過性を有する部材の反対側に前記透過性を有する部材に接触するように、前記レーザー光（Ｌ）の吸収性を有する部材を配置した、ことを特徴とする前記請求項１ないし２に記載の体液処理装置（１Ａ）。A member having the transparency of the laser light (L) is disposed on the irradiation side of the laser light (L), and the member having the transparency of the laser light (L) is in contact with the member having the transparency on the opposite side. The body fluid treatment device (1A) according to claim 1 or 2, wherein a member having absorptivity of the laser light (L) is arranged so as to perform the operation. 前記請求項２、３に記載のレーザー光（Ｌ）の吸収性を有する部材が、▲１▼レーザー光（Ｌ）の吸収性を有する材料そのもの、または▲２▼レーザー光（Ｌ）の透過性を有する材料に前記レーザー光（Ｌ）の吸収性を有する微粉末を添加した材料であることを特徴とする前記請求項１ないし３に記載の体液処理装置（１Ａ）。4. The member having an absorptivity of a laser beam (L) according to claim 2 or 3, is a material itself having an absorptivity of a laser beam (L) or (2) a transmissivity of a laser beam (L). The body fluid treatment device (1A) according to any one of claims 1 to 3, wherein the material is a material obtained by adding a fine powder having absorptivity to the laser light (L) to a material having the following. レーザー光の透過性を有する材料からなるハウジング（４）とポート１の溶着部（１４、１４ａ）の間に、
（Ａ）レーザー光（Ｌ）の吸収性を有する合成樹脂、または
（Ｂ）レーザー光（Ｌ）の透過性を有する合成樹脂に、レーザー光（Ｌ）の吸収性を有する微粉末を添加した合成樹脂、または
（Ｃ）レーザー光（Ｌ）の吸収性を有する合成樹脂フィルムまたは塗料、
何れかのレーザー吸収性部材を介在させ、レーザー光（Ｌ）をポート（１）に照射して、前記（Ａ）（Ｂ）（Ｃ）のレーザー光の吸収性を有する部材に吸収させて発熱させることにおいて、前記ポート（１）とハウジング（４）を溶着したことを特徴とする前記請求項１に記載の体液処理装置（１Ａ）。Between the housing (4) made of a material having laser light transmission properties and the welded portions (14, 14a) of the port 1,
Synthesis of (A) a synthetic resin having absorptivity for laser light (L) or (B) a synthetic resin having a permeability for laser light (L), to which fine powder having absorptivity for laser light (L) is added. Resin, or (C) a synthetic resin film or paint having laser light (L) absorbency,
The laser beam (L) is irradiated to the port (1) through any one of the laser absorbing members, and the port (1) absorbs the laser beam (A), (B), and (C) to generate heat. The body fluid treatment device (1A) according to claim 1, wherein the port (1) and the housing (4) are welded to each other. 前記ポート（１）とハウジング（４）は、前記レーザー光（Ｌ）の透過性を有する部材であり、前記ハウジング（４）の内周端部にフランジ（６）を装着し、当該フランジ（６）を前記レーザー光の吸収性を有する合成樹脂、またはレーザー光の透過性を有する合成樹脂にレーザー光の吸収性を有する微粉末を添加した合成樹脂より形成したことを特徴とする前記請求項１に記載の体液処理装置（１Ａ）。The port (1) and the housing (4) are members having transparency of the laser beam (L), and a flange (6) is attached to an inner peripheral end of the housing (4). 2. The method according to claim 1, wherein the step (a) is made of a synthetic resin having an absorptivity of the laser light or a synthetic resin obtained by adding a fine powder having an absorptivity of the laser light to a synthetic resin having a transmissivity of the laser light. Body fluid treatment device (1A) described in (1). 前記レーザー光の吸収性を有する材料は、前記ポート（１）とハウジング（４）のレーザー光の透過性を有する材料よりも融点の低い材料であることを特徴とする前記請求項１ないし６に記載の体液処理装置（１Ａ）。7. The method according to claim 1, wherein the material having a laser light absorbing property is a material having a lower melting point than a material having a laser light transmitting property of the port (1) and the housing (4). The body fluid treatment device according to (1A).
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