JP2800904B2 - Medical bag - Google Patents

Medical bag

Info

Publication number
JP2800904B2
JP2800904B2 JP3103132A JP10313291A JP2800904B2 JP 2800904 B2 JP2800904 B2 JP 2800904B2 JP 3103132 A JP3103132 A JP 3103132A JP 10313291 A JP10313291 A JP 10313291A JP 2800904 B2 JP2800904 B2 JP 2800904B2
Authority
JP
Japan
Prior art keywords
bag
main body
shaped main
medical
flat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP3103132A
Other languages
Japanese (ja)
Other versions
JPH04242545A (en
Inventor
富士男 和田
Original Assignee
川澄化学工業 株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 川澄化学工業 株式会社 filed Critical 川澄化学工業 株式会社
Priority to JP3103132A priority Critical patent/JP2800904B2/en
Publication of JPH04242545A publication Critical patent/JPH04242545A/en
Application granted granted Critical
Publication of JP2800904B2 publication Critical patent/JP2800904B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/326—Shaping the burr, e.g. by the joining tool
    • 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
    • B29C66/348—Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7148—Blood bags, medical bags

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Bag Frames (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Description

【発明の詳細な説明】 【０００１】 【産業上の利用分野】本発明は、血液バッグ、薬液バッ
グ、その他の医療用バッグの改良に関する。 【０００２】 【従来技術および発明が解決しようとする課題】通常使
用されている医療用バッグは二枚の可撓性合成樹脂シー
トを上下の金型間において、金型により押圧し熱溶着し
て袋状に形成するものであるが、シート押圧部がフラッ
トに形成された金型で押圧して融着シール部を形成する
ものであるから、融着シール部は平坦に形成される。こ
のため部分的に押圧が弱い箇所が生じ、肉薄部やクラッ
ク等が生じやすかった。 【０００３】例えば医療用バッグの内部に血液保存液、
輸液、生理食塩水等の液体を封入して運搬する際に、こ
れらの液体が漏出する原因となったり、また血液を採取
しても遠心分離処理する際、遠心力に耐えきれず、破裂
する原因になる。 【０００４】また図６の医療用バッグ３１は、薄肉のチ
ューブを押し出して熱溶着して袋状に形成したものであ
るが、図７（図６のｂ−ｂ断面図）に示すようにチュー
ブ３２の材質が可撓性合成樹脂のために偏平状に押し潰
してもその弾性回復力のため再び元のチューブ形状に戻
ろうとする傾向があるので、前記の方法で熱溶着しよう
とすると図６に示すように袋状本体３３の四隅Ａ、Ｂ、
Ｃ、Ｄ付近の熱溶着が不十分となり、この部分から液体
がリークしやすいという欠点があった（３４、３５は溶
着部、３６は口部である。）。そこで、本発明者は以上
の課題を解決するめに鋭意検討を重ねた結果次の発明に
到達した。 【０００５】 【課題を解決するための手段】本発明は、二枚のシート
を重ね合わせて形成されるかあるいは押し出しチューブ
を溶着して形成された袋状本体８と、該袋状本体８の上
端部に装着される管状部材とから構成され、袋状本体８
の両側部から上部に至るコーナー部、袋状本体８の両側
部、袋状本体８の両側部から底部に至るコーナー部、袋
状本体８の底部に亘って、平坦部Ａを挾んで袋状本体８
の最外縁部及び内縁部にそれぞれ肉厚部を形成すること
により構成される平坦な融着シール部９を形成した、医
療用バッグ１を提供する。 【０００６】 【作用】袋状本体８の両側部から上部に至るコーナー
部、袋状本体８の両側部、袋状本体８の両側部から底部
に至るコーナー部、袋状本体８の底部に亘って、融着シ
ール部が強固に形成されているので、袋状本体の外周縁
部に亘って機械的強度を向上させることができる。 【０００７】 【実施例】図１は、本発明の医療用バッグ１の概略図で
ある。医療用バッグ１は二枚の可撓性合成樹脂シートを
重ね合わせて形成されるかあるいは押し出しチューブを
溶着して形成された袋状本体８と、該袋状本体８の上端
部に装着される管状部材とから構成されている。 【０００８】管状部材とは採血針９を接続した採血チュ
ーブ３、他のバッグとの連結チューブ２、連通ピース７
を装填した連結チューブ６、プロテクター４、輸血口
５、筒体８、その他輸液チューブ等である。 【０００９】前記袋状本体８の外周縁部に平坦な融着シ
ール部９が形成され、該融着シール部９は袋状本体８の
両側部から上部に至るコーナー部、袋状本体８の両側
部、袋状本体８の両側部から底部に至るコーナー部、袋
状本体８の底部に亘って、平坦部Ａを挟んで袋状本体８
の最外縁部並びに内縁部（平坦部Ａと前記二枚のシート
または押し出しチューブの境界部）にそれぞれ肉厚部２
７、２６が形成されている（図５参照、図５は融着シー
ル部９付近の一部拡大断面図）。 【００１０】図２は本発明の医療用バッグ１を製造する
ときに使用する製造金型１１（以下金型１１）を構成す
る上金型１１ａを示す概略図で、図３は図２のａ−ａ断
面の拡大図である。上金型１１ａは、鉄、アルミ合金、
黄銅等からなり（下金型１１ｂも同じ）、医療用バッグ
１の形状に対応する型１２と医療用バッグ１の袋状本体
８に対応する溝１３が形成されている。 【００１１】前記型１２にはシート押圧部１４が形成さ
れ、該シート押圧部１４の内側には、テフロン、ベーク
ライト、セラミック等からなる非導電部１５が前記型１
２に沿って装着されている。 【００１２】図３に示すように、前記シート押圧部１４
の内面エッジ１６と非導電部１５の内面エッジ１７は斜
面に形成されるとともに（内面エッジ１６、１７の形状
は図示した斜面のものに限定されず、半円形の曲面、矩
形状の断面に形成されたものも使用される）、該斜面の
表面は凹凸に形成されている。また前記非導電部１５の
最下端レベル２０は、シート押圧部１４の最下端レベル
２１よりも若干高い位置になるように配置されている。 【００１３】これにより医療用バッグ１の袋状本体２を
構成するシート２２ａ、２２ｂを金型１１で押圧し融着
した後に、袋状本体２に膨らみをもたせることができ
る。また下金型１１ｂ（図４参照）のシート押圧部２４
の表面はフラットに形成されている。 【００１４】図４は金型１１を用いて医療用バッグ１を
製造する際の概略図を示す。シート２２ａ、２２ｂ（ま
たは薄肉に形成したチューブ、図示せず）を前記上金型
１１ａと下金型１１ｂの間に配置して、これらを上下よ
り押圧し熱溶着する。図５に示すようにシート２２ａ、
２２ｂの構成材料（溶融樹脂）は、シート押圧部１４付
近で溶融し、押圧の程度が進行するにつれて内面エッジ
１６、１７との間に形成された空間２５内に移動する。 【００１５】この時、非導電部１５には熱が伝わらない
ので非導電部１５で押圧されたシート２２ａ、２２ｂの
相当箇所では溶融は起こらない。このため前記溶融樹脂
は空間２５内に充填されながら、非導電部１５の壁面で
冷却されるので、空間２５を越えることなく平坦部Ａと
シート２２ａ、２２ｂの境界部（袋状本体８の内縁部）
に肉溜りとなって肉厚部２６が形成される。 【００１６】他方、前記構成材料（溶融樹脂）は、シー
ト押圧部１４の下部で強く押圧されるので、融着シール
部９の最外縁部方向にも押し出されて肉厚部２７が形成
される。このようにして医療用バッグ１は平坦部を挾ん
で袋状本体８の最外周縁部及び内縁部に平坦な融着シー
ル部９が形成される。これらの肉厚部２６、２７により
袋状本体８の縁部の強度を向上させることができる。 【発明の効果】以上説明したように本発明は、袋状本
体８の両側部から上部に至るコーナー部、袋状本体８の
両側部、袋状本体８の両側部から底部に至るコーナー
部、袋状本体８の底部に亘って、融着シール部が強固に
形成されているので、袋状本体８の外周縁部に亘って機
械的強度を向上させることができる。融着シール部９
は両端に肉厚部２６、２７が形成されていても全体的に
平坦に形成されているので袋状本体８の中に血液、薬液
等の液体を充填しても、袋状本体８を構成している二枚
のシート、押し出しチューブは、充分に可とう性を保持
しながら膨張することができる。このため液体の充填が
行いやすく、袋状本体８を構成する前記シートの表面積
が小さくても前記の効果を保持しつつ大容量の液体を
充填することが可能である。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvements in blood bags, medical solution bags, and other medical bags. 2. Description of the Related Art A commonly used medical bag is formed by pressing two flexible synthetic resin sheets between upper and lower molds by means of a mold and thermally welding them. It is formed in a bag shape, but since the sheet pressing portion is pressed by a flat mold to form the fusion seal portion, the fusion seal portion is formed flat. For this reason, a portion where the pressure is weakly generated partially, and a thin portion, a crack, and the like are easily generated. [0003] For example, a blood preservation solution is placed inside a medical bag,
It may cause leakage of liquids such as infusions and saline when enclosing and transporting the liquids, or may not be able to withstand the centrifugal force when centrifuging even if blood is collected, and will burst. Cause. [0006] The medical bag 31 shown in FIG. 6 is formed by extruding a thin-walled tube and forming it into a bag shape by heat welding. As shown in FIG. Even if the material of No. 32 is crushed in a flat shape due to the flexible synthetic resin, it tends to return to the original tube shape again due to its elastic recovery force. , Four corners A, B,
There was a drawback that the heat welding near C and D became insufficient and the liquid easily leaked from these portions (34 and 35 are welded portions and 36 is a mouth portion). The inventor of the present invention has made intensive studies to solve the above-mentioned problems, and as a result, has arrived at the next invention. [0005] The present invention provides a bag-shaped body 8 formed by laminating two sheets or welding an extruded tube; And a tubular member attached to the upper end thereof.
Of the bag-shaped main body 8, the corners from both sides to the bottom of the bag-shaped main body 8, and the bottom of the bag-shaped main body 8. Body 8
To provide a medical bag 1 having a flat fusion-sealed portion 9 formed by forming a thick portion at each of an outermost edge portion and an inner edge portion. [0006] A corner portion extending from both sides to the top of the bag-shaped main body 8, both sides of the bag-shaped main body 8, a corner portion extending from both sides of the bag-shaped main body 8 to the bottom, and a bottom portion of the bag-shaped main body 8 are provided. Since the fusion seal portion is firmly formed, the mechanical strength can be improved over the outer peripheral edge of the bag-shaped main body. FIG. 1 is a schematic view of a medical bag 1 according to the present invention. The medical bag 1 is formed by laminating two flexible synthetic resin sheets or by welding an extruded tube, and is attached to the upper end of the bag-shaped main body 8. And a tubular member. The tubular member includes a blood collection tube 3 to which a blood collection needle 9 is connected, a connection tube 2 to another bag, and a communication piece 7.
, A protector 4, a blood transfusion port 5, a cylindrical body 8, and other infusion tubes. A flat fusion seal portion 9 is formed on the outer peripheral edge of the bag-shaped main body 8, and the fusion seal portion 9 is a corner portion extending from both sides to the upper portion of the bag-shaped main body 8, The bag-shaped body 8 is sandwiched across the flat portion A across both sides, a corner from both sides of the bag-shaped body 8 to the bottom, and the bottom of the bag-shaped body 8.
Thick portions 2 at the outermost edge and the inner edge (the flat portion A and the boundary between the two sheets or the extruded tubes).
7 and 26 are formed (see FIG. 5, FIG. 5 is a partially enlarged cross-sectional view near the fusion seal portion 9). FIG. 2 is a schematic view showing an upper mold 11a constituting a production mold 11 (hereinafter referred to as a mold 11) used for producing the medical bag 1 of the present invention, and FIG. It is an enlarged view of -a cross section. The upper mold 11a is made of iron, aluminum alloy,
A mold 12 corresponding to the shape of the medical bag 1 and a groove 13 corresponding to the bag-shaped main body 8 of the medical bag 1 are formed of brass or the like (the same applies to the lower mold 11b). A sheet pressing portion 14 is formed on the mold 12, and a non-conductive portion 15 made of Teflon, bakelite, ceramic or the like is provided inside the sheet pressing portion 14 in the mold 1.
2 along. As shown in FIG. 3, the sheet pressing portion 14
The inner edge 16 and the inner edge 17 of the non-conductive portion 15 are formed on a slope (the shapes of the inner edges 16 and 17 are not limited to the slope shown in the figure, but are formed into a semicircular curved surface or a rectangular cross section). The surface of the slope is formed unevenly. The lowermost level 20 of the non-conductive portion 15 is arranged to be slightly higher than the lowermost level 21 of the sheet pressing portion 14. Thus, after the sheets 22a and 22b constituting the bag-shaped main body 2 of the medical bag 1 are pressed and fused by the mold 11, the bag-shaped main body 2 can be swelled. The sheet pressing portion 24 of the lower mold 11b (see FIG. 4)
Has a flat surface. FIG. 4 is a schematic view showing the production of the medical bag 1 using the mold 11. Sheets 22a and 22b (or thin-walled tubes, not shown) are arranged between the upper mold 11a and the lower mold 11b, and these are pressed from above and below and thermally welded. As shown in FIG. 5, the sheet 22a,
The constituent material (molten resin) 22b melts near the sheet pressing portion 14 and moves into the space 25 formed between the inner edges 16 and 17 as the degree of pressing progresses. At this time, since heat is not transmitted to the non-conductive portion 15, no melting occurs at a corresponding portion of the sheets 22a and 22b pressed by the non-conductive portion 15. For this reason, the molten resin is cooled on the wall surface of the non-conductive portion 15 while being filled in the space 25, so that the boundary between the flat portion A and the sheets 22 a and 22 b (the inner edge of the bag-shaped main body 8) does not exceed the space 25. Part)
And a thick portion 26 is formed. On the other hand, since the constituent material (molten resin) is strongly pressed at the lower portion of the sheet pressing portion 14, it is also pushed out toward the outermost edge of the fusion seal portion 9 to form the thick portion 27. . In this manner, the medical bag 1 has flat fusion seal portions 9 formed on the outermost peripheral edge and the inner peripheral portion of the bag-shaped main body 8 with the flat portion interposed therebetween. These thick portions 26 and 27 can improve the strength of the edge of the bag-shaped main body 8. As described above, according to the present invention, the corners extending from both sides of the bag-shaped main body 8 to the top, the both sides of the bag-shaped main body 8, the corners extending from both sides of the bag-shaped main body 8 to the bottom, Since the fusion seal portion is firmly formed over the bottom of the bag-shaped main body 8, the mechanical strength can be improved over the outer peripheral edge of the bag-shaped main body 8. Fusion seal part 9
Even if the thick portions 26 and 27 are formed at both ends, the bag-shaped main body 8 is formed even when the bag-shaped main body 8 is filled with a liquid such as a blood solution or a chemical solution because the whole is formed flat. The two sheets, the extruded tube, can expand while retaining sufficient flexibility. Therefore, it is easy to fill the liquid, and even if the surface area of the sheet constituting the bag-shaped main body 8 is small, it is possible to fill a large volume of liquid while maintaining the above-mentioned effect.

【図面の簡単な説明】 【図１】医療用バッグの概略図 【図２】医療用バッグを製造するための上金型の概略図 【図３】図２のａ−ａ断面の拡大図 【図４】医療用バッグを製造するところを示す概略図 【図５】医療用バッグの一部拡大断面図 【図６】従来の医療用バッグの概略図 【図７】図６のｂ−ｂ断面図 【符合の説明】 １ 医療用バッグ ８ 本体 ９ 融着シール部 １１ａ 上金型 １１ｂ 下金型 １２ 型 １３ 溝 ２６ 肉厚部 ２７ 肉厚部 Ａ 平坦部[Brief description of the drawings] FIG. 1 is a schematic diagram of a medical bag. FIG. 2 is a schematic view of an upper mold for manufacturing a medical bag. FIG. 3 is an enlarged view of an aa cross section of FIG. 2; FIG. 4 is a schematic view showing the production of a medical bag. FIG. 5 is a partially enlarged sectional view of a medical bag. FIG. 6 is a schematic view of a conventional medical bag. FIG. 7 is a sectional view taken along line bb of FIG. 6; [Description of sign] 1 medical bag 8 Body 9 Fusion seal part 11a Upper mold 11b Lower mold Type 12 13 grooves 26 Thick part 27 Thick part A Flat part

Claims (1)

(57)【特許請求の範囲】 １．二枚のシートを重ね合わせて形成されるかあるいは
押し出しチューブを溶着して形成された袋状本体８と、
該袋状本体８の上端部に装着される管状部材とから構成
され、 袋状本体８の両側部から上部に至るコーナー部、袋状本
体８の両側部、袋状本体８の両側部から底部に至るコー
ナー部、袋状本体８の底部に亘って、 平坦部Ａを挾んで袋状本体８の最外縁部及び内縁部にそ
れぞれ肉厚部を形成することにより構成される平坦な融
着シール部９を形成した、 ことを特徴とする医療用バッグ１。(57) [Claims] A bag-shaped body 8 formed by laminating two sheets or welding an extruded tube;
A tubular member attached to the upper end of the bag-shaped main body 8; a corner portion extending from both sides of the bag-shaped main body 8 to the top; both sides of the bag-shaped main body 8; A flat fusion seal formed by forming thick portions at the outermost edge and the inner edge of the bag-shaped body 8 with the flat portion A sandwiched between the corner portion reaching the bottom and the bottom of the bag-shaped body 8. A medical bag 1 having a portion 9 formed therein.
JP3103132A 1991-04-08 1991-04-08 Medical bag Expired - Fee Related JP2800904B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3103132A JP2800904B2 (en) 1991-04-08 1991-04-08 Medical bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3103132A JP2800904B2 (en) 1991-04-08 1991-04-08 Medical bag

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP62083869A Division JPS63249633A (en) 1987-04-07 1987-04-07 Manufacture of bag for medical care

Publications (2)

Publication Number Publication Date
JPH04242545A JPH04242545A (en) 1992-08-31
JP2800904B2 true JP2800904B2 (en) 1998-09-21

Family

ID=14346017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3103132A Expired - Fee Related JP2800904B2 (en) 1991-04-08 1991-04-08 Medical bag

Country Status (1)

Country Link
JP (1) JP2800904B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11498284B2 (en) 2018-09-25 2022-11-15 Fresenius Kabi Deutschland Gmbh Contour-forming welding tool for pulse welding and contour-forming pulse welding method for a medical pack formed as a bag

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4593906B2 (en) * 2003-12-04 2010-12-08 テルモ株式会社 Heat seal mold for medical container and method for manufacturing medical container
JP2006000398A (en) * 2004-06-17 2006-01-05 Jms Co Ltd Soft plastic bag for medical solution and method of manufacturing the same
JP5498818B2 (en) * 2010-03-03 2014-05-21 テルモ株式会社 Method for producing medical container and medical container

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5748387A (en) * 1980-09-07 1982-03-19 Masaharu Kominami Collector for calcium ion water
JPS5946971A (en) * 1982-09-09 1984-03-16 テルモ株式会社 Medical container

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11498284B2 (en) 2018-09-25 2022-11-15 Fresenius Kabi Deutschland Gmbh Contour-forming welding tool for pulse welding and contour-forming pulse welding method for a medical pack formed as a bag

Also Published As

Publication number Publication date
JPH04242545A (en) 1992-08-31

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