JPH0624572B2 - Method of manufacturing medical bag - Google Patents
Method of manufacturing medical bagInfo
- Publication number
- JPH0624572B2 JPH0624572B2 JP22720186A JP22720186A JPH0624572B2 JP H0624572 B2 JPH0624572 B2 JP H0624572B2 JP 22720186 A JP22720186 A JP 22720186A JP 22720186 A JP22720186 A JP 22720186A JP H0624572 B2 JPH0624572 B2 JP H0624572B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- tube
- core pin
- bag
- fusion
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000000463 material Substances 0.000 claims description 19
- 239000000470 constituent Substances 0.000 claims description 17
- 230000004927 fusion Effects 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 239000002985 plastic film Substances 0.000 claims description 3
- 210000004369 blood Anatomy 0.000 description 16
- 239000008280 blood Substances 0.000 description 16
- 238000007789 sealing Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 230000001012 protector Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000000601 blood cell Anatomy 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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
- B29C66/50—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
- 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
- B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
-
- 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
- B29C66/324—Avoiding burr formation
- B29C66/3242—Avoiding burr formation on the inside of a tubular or hollow 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
- B29C66/01—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
- B29C66/50—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
- B29C66/63—Internally supporting the article during joining
-
- 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
- B29C66/83—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
- B29C66/70—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
- 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)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Description
【発明の詳細な説明】 （従来技術及びその問題点） 血液の保存、成分分離などに軟質塩化ビニル製の血液バ
ッグが汎用されている。DETAILED DESCRIPTION OF THE INVENTION (Prior Art and Problems Thereof) A blood bag made of soft vinyl chloride is widely used for storing blood, separating components, and the like.
この血液バッグには、たとえば第５図に示すように、バ
ッグ上端部に、他のバッグとの連結チューブ３０や採血
チューブ３１、あるいはプロテクター３２で覆われた輸
血口３３などが取付けられている。In this blood bag, for example, as shown in FIG. 5, a connecting tube 30 with another bag, a blood collecting tube 31, or a blood transfusion port 33 covered with a protector 32 is attached to the upper end of the bag.
これらの部品を取付るにあたって、従来では第６図に示
すように、バッグとなる２枚のプラスチックシート３
４、３４の端縁部に、前記輸血口３３、３３や各チュー
ブ３０、３１の口筒３０ａ、３１ａなどの筒体３８を挿
入し、第７図に示すような道電性材料の高周波溶着用コ
アピン３５を挿入するとともに、前記筒体３８の径及び
シート３４の厚さの和よりわずかに小さな直管状の溝３
６、３６が形成された高周波溶着用金型３７、３７をシ
ート３４、３４から押しつけて溶着していたものであ
る。When attaching these parts, as shown in FIG. 6, conventionally, two plastic sheets 3 to be a bag are used.
A tube 38 such as the blood transfusion port 33, 33 or the mouth tube 30a, 31a of each tube 30, 31 is inserted into the edge portion of 4, 4 and 34, and high frequency welding of a conductive material as shown in FIG. 7 is performed. The core pin 35 for insertion is inserted, and the straight tubular groove 3 is slightly smaller than the sum of the diameter of the cylindrical body 38 and the thickness of the sheet 34.
The high frequency welding dies 37 and 37 in which 6 and 36 are formed are pressed against the sheets 34 and 34 and welded.
しかしながらこのような方法によると、溶着時に溶融し
た筒体及びシートの構成材料が筒体とシートの溶着シー
ル部を越えて強制的に押し出されて、第８図に示すごと
く水滴型のバリ３９としてバッグやプロテクターの内部
空間に突出してしまう。特にバッグ内部側に水滴型のバ
リ３９が生じると、そのバリによって形成された狭隘部
に血液が残留したり、各筒体の開口面積が狭くなって血
液の流出入が悪くなったり、血球破損の原因になるなど
の問題を生じることになる。他方バッグ外側のバリ39′
は、プロテクター３２のパンク不良につながる危険性が
あった。However, according to such a method, the constituent materials of the cylindrical body and the sheet melted during the welding are forcedly pushed out beyond the welded seal portion of the cylindrical body and the sheet, and as a water drop type burr 39 as shown in FIG. It projects into the internal space of the bag or protector. In particular, when a water drop type burr 39 is generated on the inner side of the bag, blood remains in the narrow portion formed by the burr, the opening area of each cylinder is narrowed, and the inflow and outflow of blood is deteriorated, and blood cells are damaged. Will cause problems such as the cause of. On the other hand, the burr 39 ′ on the outside of the bag
Has a risk of causing a flat blowout of the protector 32.
また、柔軟な薄いシート３４、３４に比べ前記筒体３８
は肉厚が厚く、相体的に剛性が大きいため、シートと筒
体を加熱しながら圧着する際、完全に両者を溶着させよ
うとすると、第９図に示すごとく筒体の下端部において
融着しシートが薄肉化し、脆弱部４０ができ、破損しや
すくなったり、さらにはピンホールができるという問題
もあった。Further, the tubular body 38 is more flexible than the flexible thin sheets 34, 34.
Has a large wall thickness and is relatively rigid in rigidity. Therefore, when attempting to completely weld the sheet and the tubular body together while heating them, as shown in FIG. 9, the fusion occurs at the lower end of the tubular body. There is also a problem that the wearing sheet becomes thin, a fragile portion 40 is formed, it is easily damaged, and a pinhole is formed.
このような現象は、プロテクター３２の内面部にも生
じ、その脆弱部が破損して輸血口が汚染される危険性が
あった。Such a phenomenon also occurs in the inner surface portion of the protector 32, and there is a risk that the fragile portion is damaged and the blood transfusion port is contaminated.
また最近、特開昭５８−１６５８６７号には第１０図に
示すように、樹脂の一次融着用の第一ランド４１と二次
融着用の第二ランド４２、第三ランド４３と形成した金
型４４、４４の間にコアピン４５に嵌挿されたチューブ
４６とシート４７、４７を介在させてチューブ４６とシ
ート４７、４７に金型４４、４４を押しつけて高周波を
印加して、前記チューブ４６とシート４７、４７の構成
材料を溶融させた第一ランド４１よりチューブ４６とシ
ート４７、４７の溶融した構成材料を第一ランド４１の
両側に流出させチューブ４６とシート４７、４７に第一
ランド４１による一次融着部５０及びその両側のチュー
ブ４６とシート４７、４７間に形成される小空間４７に
シート融着シール部の最下端４８を越えることなく吸収
充填されて形成される二次融着部５１を形成する医療用
バッグの製造方法に記載されている。Further, recently, as shown in FIG. 10 in Japanese Patent Application Laid-Open No. 58-165867, a mold formed with a first land 41 for primary fusion of resin, a second land 42 for secondary fusion, and a third land 43. 44 and 44, the tube 46 and the sheets 47 and 47 inserted into the core pin 45 are interposed, the molds 44 and 44 are pressed against the tubes 46 and the sheets 47 and 47, and a high frequency is applied to the tubes 46 and the sheets 47 and 47. The tube 46 and the melted constituent materials of the sheets 47, 47 are caused to flow out to both sides of the first land 41 from the first land 41 where the constituent materials of the sheets 47, 47 are melted, and the tubes 46 and the sheets 47, 47 are covered with the first land 41. The primary fusion portion 50 and the small space 47 formed between the tubes 46 on both sides thereof and the sheets 47, 47 are absorbed and filled without exceeding the lowermost end 48 of the sheet fusion sealing portion. Are described in the production method of the medical bag to form a that secondary fusion part 51.
この方法は、チューブ４６とシート４７、４７の構成材
料が、シート融着シール部の最下端４８を越えて流出し
ないので医療用バッグの内面にバリが発生せず優れた発
明であるが、二次融着部５１に完全に溶融樹脂を充填す
るように調整することは困難で、第１１図に示すように
二次融着部５１に、どうしてもチューブ４６とシート４
７間の非溶着部５２が生成し、この部分に血液が残留し
たりしていた。This method is an excellent invention because burrs do not occur on the inner surface of the medical bag because the constituent materials of the tube 46 and the sheets 47, 47 do not flow out beyond the lowermost end 48 of the sheet fusion-sealing portion. It is difficult to adjust the secondary fusion bonding portion 51 so as to be completely filled with the molten resin, and as shown in FIG. 11, the tube 46 and the sheet 4 are inevitably attached to the secondary fusion bonding portion 51.
The non-welded portion 52 between 7 was formed, and blood remained in this portion.
（問題点を解決するための手段） そこで本発明は、以上の問題点を解決するために、テー
パー部を形成したコアピンにチューブを嵌捜し、該コア
ピンとシート押圧部がストレートに形成された金型の間
にシートを介在させ、チューブとシートに金型を押しつ
けて高周波を印加して、前記チューブとシートの構成材
料をシート押圧部の下流に流出させ、チューブとシート
にシート押圧部による一次融着部及びその下部のチュー
ブとコアピン間に形成される小空間に吸収充填され、シ
ート融着シール部の最下端部を越えて口部の内円周面に
流出して形成される二次融着部を形成することを特徴と
する医療用バッグの製造方法を提供するものである。(Means for Solving Problems) Therefore, in order to solve the above problems, the present invention seeks to fit a tube into a core pin having a taper portion, and the core pin and the sheet pressing portion are formed straight. The sheet is interposed between the molds, the mold is pressed against the tube and the sheet, a high frequency is applied, the constituent materials of the tube and the sheet are caused to flow out to the downstream of the sheet pressing portion, and the tube and the sheet are primaryly pressed by the sheet pressing portion. Secondary formed by absorbing and filling a small space formed between the fusion-bonding part and the tube below it and the core pin, and flowing out to the inner circumferential surface of the mouth beyond the lowermost end of the sheet fusion-bonding sealing part. The present invention provides a method for manufacturing a medical bag, which is characterized by forming a fusion-bonded portion.
（作用） 金型のシート押圧部によりクランプされ溶融したチュー
ブとシートの構成材料は、下方向へ移動し、コアピンと
チューブ間に形成される小空間に吸収充填され、さらに
クランプ時に受ける突出力よりアール部に衝突し、金型
とコアピン間の温度分布差により溶融した構成材料がシ
ート融着シール部の際下端部を越えて流出し医療用バッ
グの口部の内円周面に沿って補強部材が形成される。(Function) The material of the tube and sheet that is clamped and melted by the sheet pressing part of the mold moves downward, is absorbed and filled in the small space formed between the core pin and the tube, and the protruding force received during clamping The component material that collided with the rounded portion and melted due to the difference in temperature distribution between the mold and the core pin flows out beyond the lower end portion at the sheet fusion seal portion and reinforces along the inner circumferential surface of the mouth of the medical bag. A member is formed.
（実施例） 第１実施例 以下、本発明の第１実施例を第１図に従って説明する。
図中１、１はポリ塩化ビニル製の軟質プラスチックシー
トで、２は内部に薄膜２６が形成され輸血口として使用
されるチューブ（以下「チューブ」と略す）である。３
は前記チューブ２を嵌挿するためのコアピンで、鉄、ス
テンレス、黄銅、ジュラルミン等の導電性材料で作られ
ており嵌挿されるチューブ２の下端部に対応する位置に
は、テーパー部４とアール部５が形成されている。２３
はエアー抜き用の穴で、これはコアピン３をチューブ２
に挿入する時、独立空間Ａが生成しコアピン３の先端が
薄膜２６に突きあたるまで挿入すると空間Ａのエアーは
圧縮されてコアピン３がおしかえされる現象が生じるの
でこれを防ぐために形成されたものである。(Example) 1st Example Hereinafter, the 1st Example of this invention is described according to FIG.
In the figure, 1 and 1 are soft plastic sheets made of polyvinyl chloride, and 2 is a tube (hereinafter abbreviated as "tube") having a thin film 26 formed therein and used as a blood transfusion port. Three
Is a core pin into which the tube 2 is inserted and is made of a conductive material such as iron, stainless steel, brass, and duralumin, and is located at a position corresponding to the lower end of the tube 2 to be inserted and has a tapered portion 4 and a radius. The part 5 is formed. 23
Is a hole for bleeding air, this is the core pin 3 and the tube 2
When the core pin 3 is inserted into the space A, the air in the space A is compressed when the core pin 3 is inserted until the tip of the core pin 3 hits the thin film 26. It is a thing.
６、６は金型で、シート押圧部７はストレートに形成さ
れている。チューブ２とシート１、１は次のように溶着
される。チューブ２をコアピン３の先端に嵌挿した後、
これを２枚のシート１、１間に挟持し、両側より金型
６、６によりクランプする。6 and 6 are molds, and the sheet pressing portion 7 is formed straight. The tube 2 and the sheets 1 and 1 are welded as follows. After inserting the tube 2 into the tip of the core pin 3,
This is sandwiched between two sheets 1 and 1, and clamped by dies 6 from both sides.
この時、チューブ２のコアピン３と密着した箇所とシー
ト１の金型６のシート押圧部７、７と密着した箇所は、
すみやかに溶融した金型６、６間のクランプが進むにつ
れて溶融したチューブ２及びシート１の構成材料は逃げ
場を失なって前記密着部の下方向に移動する。At this time, the portion of the tube 2 that is in close contact with the core pin 3 and the portion of the mold 1 of the sheet 1 that is in close contact with the sheet pressing portions 7, 7 are
As the clamp between the molds 6 melted quickly, the melted constituent materials of the tube 2 and the sheet 1 lose their escape areas and move downward in the contact portion.
下方向に移動するチューブ２とシート１の溶融した構成
材料は、まずコアピン３のテーパー部４とチューブ２と
の間に形成される小空間８に吸収充填され、次にクラン
プ時に受ける下方向への突出力によりコアピン３のアー
ル部５に衝突してさらに流出する。The molten constituent materials of the tube 2 and the sheet 1 moving downward are first absorbed and filled in the small space 8 formed between the tapered portion 4 of the core pin 3 and the tube 2, and then downwardly received during clamping. Of the core pin 3 collides with the rounded portion 5 of the core pin 3 and further flows out.
すなわち金型６、６に近い側では、温度が高いため溶融
した構成材料の下方への流出速度が早く、小空間８に近
い側では温度が低いので、流出速度が遅くなり、結局金
型６、６に近い側の溶融した構成材料がシート融着シー
ル部の最下端部９を越えて流出し、融着したシート１に
より形成される医療用バッグの口部１０の内円周面上に
補強部材１１が形成される。小空間が充填された分だけ
若干通路面積が減少するが、逆にその分だけ補強され
る。That is, on the side close to the molds 6, 6, the temperature of the molten constituent material is high and the downward flow rate of the melted constituent material is fast. On the side close to the small space 8, the temperature is low, so the flow rate is low, and eventually the mold 6 is closed. , 6 on the side close to 6 flows out over the lowermost end 9 of the sheet fusion-sealing portion and is formed on the inner circumferential surface of the mouth 10 of the medical bag formed by the fused sheet 1. The reinforcing member 11 is formed. Although the passage area is slightly reduced by filling the small space, it is reinforced by that amount.
本実施例では血液バッグの外側にも若干シート１とチュ
ーブ２の構成材料の流出部２７（従来のバリほど大きく
はない）が見られた。これはシート１とチューブ２の構
成材料は瞬間的に溶融するので、テーパー部４のみでは
これらの溶融した構成材料を一時的に完全に吸収でき
ず、該構成材料は前述した密着部より上方向に移動せざ
るをえなくなるためと考えられる。In the present embodiment, a slight outflow portion 27 (not so large as the conventional burr) of the constituent materials of the sheet 1 and the tube 2 was also found on the outside of the blood bag. This is because the constituent materials of the sheet 1 and the tube 2 are instantaneously melted, and thus the melted constituent materials cannot be temporarily and completely absorbed by the taper portion 4 alone, and the constituent material is directed upward from the above-mentioned close contact portion. It is thought that it is necessary to move to.
第２実施例 本実施例では、金型１６の下端部（シート融着シール部
に対応する位置）に、テフロン、ベークライト等の非導
電性の部材よりなる非導電部２２を形成しコアピン１３
の上部に切欠部２４形成したものである。Second Embodiment In this embodiment, a non-conductive portion 22 made of a non-conductive member such as Teflon or Bakelite is formed at the lower end portion of the mold 16 (a position corresponding to the sheet fusion sealing portion) to form the core pin 13.
The notch 24 is formed in the upper part of the.
チューブ１２とシート１１を金型１６によりクランプ
し、高周波を印加すると溶融したチューブ１２とシート
１１の構成材料は、下方向へ移動してコアピン１３のテ
ーパー部１４とチューブ１２間に形成される小空間１８
に吸収充填される。When the tube 12 and the sheet 11 are clamped by the mold 16 and a high frequency is applied, the constituent materials of the tube 12 and the sheet 11 that are melted move downward and are formed between the tapered portion 14 of the core pin 13 and the tube 12. Space 18
Is absorbed and filled.
さらにクランプ時に受ける下方向への突出力によりコア
ピン１３のアール部１５に衝突してさらに下方向へ流出
する。若干上部方向へ移動しようとする前記構成材料は
コアピンの切欠部２４に吸収充填されバッグの外側には
流出しない。Further, due to the downward thrust force received at the time of clamping, it collides with the rounded portion 15 of the core pin 13 and further flows downward. The constituent material, which tends to move slightly upward, is absorbed and filled in the notch 24 of the core pin and does not flow out to the outside of the bag.
非導電部２２付近のシート１１の構成材料は半溶融状態
（低温状態）となっているので、非導電部２２付近では
早く凝固して固定され、他方の前記アール部１５に衝突
した樹脂は、コアピン１３のアール部１５周面に沿って
シート融着シール部の最下端部１９を越えて流出し、こ
れが医療用バッグの口部２０の内円周面上に補強部材２
１として形成される。Since the constituent material of the sheet 11 near the non-conductive portion 22 is in a semi-molten state (low temperature state), the resin that is solidified and fixed quickly near the non-conductive portion 22 and the resin that has collided with the other rounded portion 15 is The core pin 13 flows out along the peripheral surface of the rounded portion 15 beyond the lowermost end portion 19 of the sheet fusion-sealing portion, and this flows out on the inner peripheral surface of the mouth portion 20 of the medical bag to the reinforcing member 2.
Formed as 1.
本実施例では、非導電部２２付近で溶融樹脂が早く凝固
する分だけ第１実施例より補強部材の形状が小さくなっ
ている。またコアピンに切欠部２４を形成した分だけバ
ッグの外側のバリは完全に防止できる。In this embodiment, the shape of the reinforcing member is smaller than that in the first embodiment by the amount that the molten resin is solidified near the non-conductive portion 22 faster. Also, the burr on the outside of the bag can be completely prevented by the amount of the notch 24 formed in the core pin.
（発明の効果） 以上のように本発明では、コアピンのテーパー部に樹脂
が充填されることにより口部基部の肉厚が厚く形成され
ると共に口部の内円周面上に沿って補強部材が形成され
かつ補強部材は、コアピンのアール部の形状に対応して
定型的にアール状に形成されているので、チューブとシ
ート間に脆弱部やピンホールの発生がなくなり、このア
ール部に血液が滞留して残血等の問題が生じる危険がな
い。(Effects of the Invention) As described above, according to the present invention, the taper portion of the core pin is filled with the resin so that the base portion of the mouth portion is made thicker and the reinforcing member is provided along the inner circumferential surface of the mouth portion. Is formed and the reinforcing member is typically formed in a rounded shape corresponding to the shape of the rounded portion of the core pin, so that no fragile portion or pinhole is generated between the tube and the seat, and the blood is not formed in this rounded portion. There is no risk that the blood will accumulate and cause problems such as residual blood.
第１図及び第２図は本発明により医療用バッグを製造す
る工程の第１実施例を示す縦断面図、第３図及び第４図
は本発明により医療用バッグを製造する工程の第２実施
例を示す縦断面図、第５図は血液バッグの平面図、第
６、７、１０図は従来法を示す概略図、第８、９、１１
図は従来法を示す概略図である。 図中、１、１１はシート、２、１２はチューブ、３、１
３はコアピン、４、１４はテーパー部、５、１５はアー
ル部、６、１６は金型、７、１７はシート押圧部、８、
１８は小空間、９、１９はシート融着シール部の最下端
部、１０、２０は口部、１１、２１は補強部材、２２は
非導電部、２３、２５はエアー抜き用の穴、２４は切欠
部を示す。1 and 2 are longitudinal sectional views showing a first embodiment of a process for producing a medical bag according to the present invention, and FIGS. 3 and 4 are a second process for producing a medical bag according to the present invention. A longitudinal sectional view showing an embodiment, FIG. 5 is a plan view of a blood bag, and FIGS. 6, 7, and 10 are schematic views showing a conventional method, 8, 9, and 11.
The figure is a schematic view showing a conventional method. In the figure, 1 and 11 are sheets, 2 and 12 are tubes, and 3 and 1
3 is a core pin, 4 and 14 are tapered portions, 5 and 15 are rounded portions, 6 and 16 are molds, 7 and 17 are sheet pressing portions, 8 and
Reference numeral 18 is a small space, 9 and 19 are lowermost end portions of the sheet fusion-sealing portion, 10 and 20 are mouth portions, 11 and 21 are reinforcing members, 22 is a non-conductive portion, 23 and 25 are air vent holes, and 24. Indicates a notch.
Claims (1)
形成する医療用バッグの製造方法において、テーパー部
を形成したコアピンにチューブを嵌捜し、該コアピンと
シート押圧部がストレートに形成された金型の間にシー
トを介在させ、チューブとシートに金型を押しつけて高
周波を印加して、前記チューブとシートの構成材料をシ
ート押圧部の下流に流出させ、チューブとシートにシー
ト押圧部による一次融着部及びその下部のチューブとコ
アピン間に形成される小空間に吸収充填され、シート融
着シール部の最下端部越えて口部の内円周面に流出して
形成される二次融着部を形成することを特徴とする医療
用バッグの製造方法。1. A method for manufacturing a medical bag in which plastic sheets are laminated to form a bag, and a tube is fitted into a core pin having a tapered portion, and the core pin and the sheet pressing portion are formed straight. The sheet is interposed between the tube and the sheet, the mold is pressed against the tube and the sheet, and a high frequency is applied to allow the constituent materials of the tube and the sheet to flow out to the downstream of the sheet pressing portion, and the primary fusion of the tube and the sheet by the sheet pressing portion is performed. Secondary fusion formed by absorbing and filling a small space formed between the tube and the core pin at the attachment part and its lower part, and flowing out to the inner circumferential surface of the mouth beyond the lowermost end of the sheet fusion seal part. A method of manufacturing a medical bag, comprising forming a portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22720186A JPH0624572B2 (en) | 1986-09-27 | 1986-09-27 | Method of manufacturing medical bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22720186A JPH0624572B2 (en) | 1986-09-27 | 1986-09-27 | Method of manufacturing medical bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6382664A JPS6382664A (en) | 1988-04-13 |
| JPH0624572B2 true JPH0624572B2 (en) | 1994-04-06 |
Family
ID=16857080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22720186A Expired - Fee Related JPH0624572B2 (en) | 1986-09-27 | 1986-09-27 | Method of manufacturing medical bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624572B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988007152A1 (en) * | 1987-03-14 | 1988-09-22 | Kabushiki Kaisha Kambayashi Seisakujo | Solenoid device |
-
1986
- 1986-09-27 JP JP22720186A patent/JPH0624572B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988007152A1 (en) * | 1987-03-14 | 1988-09-22 | Kabushiki Kaisha Kambayashi Seisakujo | Solenoid device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6382664A (en) | 1988-04-13 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |