JPH0158991B2 - - Google Patents
Info
- Publication number
- JPH0158991B2 JPH0158991B2 JP58124922A JP12492283A JPH0158991B2 JP H0158991 B2 JPH0158991 B2 JP H0158991B2 JP 58124922 A JP58124922 A JP 58124922A JP 12492283 A JP12492283 A JP 12492283A JP H0158991 B2 JPH0158991 B2 JP H0158991B2
- Authority
- JP
- Japan
- Prior art keywords
- diameter part
- large diameter
- tube
- small diameter
- cylindrical body
- 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
Links
- 238000001914 filtration Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000008280 blood Substances 0.000 claims description 8
- 210000004369 blood Anatomy 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 2
- 238000000071 blow moulding Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、輸血用濾過点滴筒の製造法に関す
る。さらに詳しくは、合成樹脂の吹込成形を利用
した輸血用濾過点滴筒の新規な製造法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a filtration drip tube for blood transfusion. More specifically, the present invention relates to a novel method for manufacturing a blood transfusion filtration drip tube using synthetic resin blow molding.
〔従来の技術〕
通常、輸血セツトには血液を濾過するための濾
過体と輸血速度を確認するための点滴筒が設けら
れている。これらの濾過体と点滴筒は、一般に一
体化されており、従来は太さが一定の合成樹脂チ
ユーブを切断し、これに細管、濾過体および針の
基端部などを順次挿入して、高周波融着法により
チユーブを何度か圧着して製造していた。[Prior Art] Usually, a blood transfusion set is provided with a filter for filtering blood and a drip tube for checking the blood transfusion rate. These filter bodies and drip tubes are generally integrated, and in the past, a synthetic resin tube with a constant thickness was cut, and the thin tube, filter body, and proximal end of the needle were sequentially inserted into the tube, and high-frequency It was manufactured by crimping the tube several times using the fusion method.
しかしながら、従来の方法では１つの濾過点滴
筒を製造するために何回も高周波融着を行う必要
があり、生産性が悪く効率的な生産が困難であつ
た。また、その結果製造コストも高くなる欠点も
あつた。
However, in the conventional method, it is necessary to perform high frequency fusion many times to manufacture one filtration drip tube, resulting in poor productivity and difficulty in efficient production. Moreover, as a result, the manufacturing cost also increased.
本発明の目的はこれらの問題を解決した効率的
な製造方法を提供することにある。 An object of the present invention is to provide an efficient manufacturing method that solves these problems.
本発明の製造方法は、合成樹脂を溶融押出して
チユーブを形成し、該チユーブに気体を吹き込ん
で金型内で膨張させ金型に密着させることによ
り、第１の小径部、第１の大径部、第２の小径
部、第１の大径部よりも長さの長い第２の大径
部、第３の小径部および前記第２の大径部と長さ
の等しい第３の大径部を１単位としてこれが繰り
返される連続円筒体を形成し、次いで該連続円筒
体の前記第１の小径部の中央と第２の大径部の中
央を切断して前記１繰り返し単位から一端が小径
部で他端が大径のまま開口した大径部からなりそ
の間に１つの大径部と１つの小径部を含む円筒体
を２つ形成し、小径部の内径と略等しい外径を有
する細管を得られた円筒体の中央側に位置する小
径部に挿入して固定し、さらに前記円筒体の一端
となつている大径開口部より濾過体と針体または
針体を結合するためのチユーブを挿入して開口端
部とともに融着するようにしたことを特徴とする
ものである。
In the manufacturing method of the present invention, a synthetic resin is melt-extruded to form a tube, and the tube is expanded in a mold by blowing gas into the tube to make it adhere tightly to the mold, thereby forming a first small diameter portion and a first large diameter portion. a second small diameter part, a second large diameter part longer than the first large diameter part, a third small diameter part, and a third large diameter part having the same length as the second large diameter part. A continuous cylindrical body is formed by repeating this process with each section as one unit, and then the center of the first small diameter section and the center of the second large diameter section of the continuous cylindrical body are cut to form a continuous cylindrical body from which one end has a small diameter from the one repeating unit. A thin tube having a large diameter part with the other end open at the same diameter as the large diameter part, forming two cylindrical bodies including one large diameter part and one small diameter part between them, and having an outer diameter approximately equal to the inner diameter of the small diameter part. A tube for inserting and fixing into the small diameter part located in the center of the obtained cylindrical body, and further connecting the filter body and the needle body or the needle body through the large diameter opening serving as one end of the cylindrical body. is characterized in that it is inserted and fused together with the open end.
以下、図面を用いて本発明をさらに具体的に説
明する。第１図は、ポリ塩化ビニルなどの合成樹
脂からなるチユーブを吹込成形法により成形して
製造した連続円筒体の実施例についての部分正面
図である。すなわち、合成樹脂を溶融押出してチ
ユーブを形成し、次いで溶融状態にあるチユーブ
に気体を吹き込んで金型内で膨張させ、金型に密
着させて連続円筒体を製造する。この連続円筒体
は小径部と大径部が交互に連続しており、第１の
小径部２、第１の大径部１、第２の小径部２′、
第１の大径部よりも長さの長い第２の大径部１′、
第３の小径部２″および前記第２の大径部と長さ
の等しい第３の大径部１″を１単位としてこれが
繰り返されているものである。このときの成形条
件は、吹込成形において通常用いられる条件を採
用することができる。
Hereinafter, the present invention will be explained in more detail using the drawings. FIG. 1 is a partial front view of an embodiment of a continuous cylindrical body manufactured by molding a tube made of synthetic resin such as polyvinyl chloride by blow molding. That is, a synthetic resin is melt-extruded to form a tube, and then gas is blown into the molten tube to expand it in a mold, and the tube is brought into close contact with the mold to produce a continuous cylindrical body. This continuous cylindrical body has small diameter portions and large diameter portions that are continuous alternately, a first small diameter portion 2, a first large diameter portion 1, a second small diameter portion 2',
a second large diameter portion 1′ having a longer length than the first large diameter portion;
This process is repeated using the third small diameter section 2'' and the third large diameter section 1'', which has the same length as the second large diameter section, as one unit. The molding conditions at this time can be those commonly used in blow molding.
次いで、得られた連続円筒体を第１の小径部の
中央Ａ−Ａ、第２の大径部の中央Ｂ−Ｂ、次の繰
り返し単位における第１の小径部の中央Ｃ−Ｃ…
で切断する。このように切断すれば、１つの繰り
返し単位から第２図に示す円筒体が向き合つたか
たちで同時に２つ得られるので、無駄がない。第
２図はこのようにして得られて円筒体の斜視図で
あり、一端が小径部２で他端が大径部１′の左半
分であつて端部は大径のまま開口している。そし
て、その間に大径部１と小径部２′を含んでいる。 Next, the obtained continuous cylindrical body is placed at the center A-A of the first small diameter section, the center B-B of the second large diameter section, the center C-C of the first small diameter section in the next repeating unit, etc.
Cut with. By cutting in this way, two cylindrical bodies shown in FIG. 2 facing each other can be obtained from one repeating unit at the same time, so there is no waste. Figure 2 is a perspective view of the cylindrical body obtained in this way, with one end being the small diameter part 2 and the other end being the left half of the large diameter part 1', with the end remaining open with the large diameter. . A large diameter portion 1 and a small diameter portion 2' are included therebetween.
次に、得られた円筒体の中央側に位置する小径
部２′に、小径部の内径と略等しい外径を有する
細管３を挿入して接着などにより固定する。第２
図は細管３が固定された状態を示している。この
ようにして大径部１が点滴室として形成される。 Next, a thin tube 3 having an outer diameter approximately equal to the inner diameter of the small diameter portion is inserted into the small diameter portion 2' located at the center of the obtained cylindrical body and fixed by adhesive or the like. Second
The figure shows a state in which the thin tube 3 is fixed. In this way, the large diameter portion 1 is formed as a drip chamber.
最後に、円筒体の大径部１′の開口端部より濾
過体４と針体５とを挿入し、開口端部とともに融
着して濾過室を形成させる。融着は高周波加熱に
よる融着が好ましい。第３図は、このようにして
得られた濾過点滴筒の実施例を示す正面図であ
り、６が融着部である。なお、第３図に示すもの
は針体が直接濾過点滴筒に固定されているが、チ
ユーブを介して接続してもよい。この場合には、
濾過体とともに針体を結合するチユーブを円筒体
内に挿入して融着する。 Finally, the filter body 4 and the needle body 5 are inserted through the open end of the large diameter portion 1' of the cylindrical body and fused together with the open end to form a filtration chamber. The fusion is preferably performed by high frequency heating. FIG. 3 is a front view showing an example of the filtration drip tube obtained in this way, and 6 is a fused portion. In addition, although the needle shown in FIG. 3 is directly fixed to the filtration drip tube, it may be connected via a tube. In this case,
A tube that connects the needle body with the filter body is inserted into the cylindrical body and fused.
本発明により製造された濾過点滴筒は、さらに
輸血のために必要な器具を取りつけて、輸血セツ
トとして使用する。 The filtration drip tube manufactured according to the present invention is further attached with equipment necessary for blood transfusion and used as a blood transfusion set.
以上述べたように、本発明の方法によれば単純
な工程の組み合わせによつて濾過点滴筒を製造す
ることができる。そして、融着操作は１回だけで
あるので製造工程を容易に自動化することがで
き、効率的な生産が可能である。また、材料に無
駄か生じないので経済性の点でも優れている。
As described above, according to the method of the present invention, a filtration drip tube can be manufactured by a combination of simple steps. Further, since the fusing operation is performed only once, the manufacturing process can be easily automated, and efficient production is possible. In addition, since there is no wastage of materials, it is also excellent in terms of economy.
第１図は、本発明の方法において途中の段階で
得られる連続円筒体の実施例を示す部分正面図で
あり、第２図は第１図の連続円筒体を切断して得
られた円筒体の斜視図である。また、第３図は本
発明の方法により製造される濾過点滴筒の実施例
についての正面図である。
１……第１の大径部、１′……第２の大径部、
１″……第３の大径部、２……第１の小径部、
２′……第２の小径部、２″……第３の小径部、３
……細管、４……濾過体、５……針体、６……融
着部。
FIG. 1 is a partial front view showing an example of a continuous cylindrical body obtained at an intermediate stage in the method of the present invention, and FIG. 2 is a cylindrical body obtained by cutting the continuous cylindrical body of FIG. 1. FIG. Further, FIG. 3 is a front view of an embodiment of a filtering drip tube manufactured by the method of the present invention. 1...first large diameter part, 1'...second large diameter part,
1″...Third large diameter part, 2...First small diameter part,
2'...Second small diameter part, 2''...Third small diameter part, 3
... Thin tube, 4 ... Filter body, 5 ... Needle body, 6 ... Fusion part.
Claims (1)
該チユーブに気体を吹き込んで金型内で膨張させ
金型に密着させることにより、第１の小径部、第
１の大径部、第２の小径部、第１の大径部よりも
長さの長い第２の大径部、第３の小径部および前
記第２の大径部と長さの等しい第３の大径部を１
単位としてこれが繰り返される連続円筒体を形成
し、次いで該連続円筒体の前記第１の小径部の中
央と第２の大径部の中央を切断して前記１繰り返
し単位から一端が小径部で他端が大径のまま開口
した大径部からなりその間に１つの大径部と１つ
の小径部を含む円筒体を２つ形成し、小径部の内
径と略等しい外径を有する細管を得られた円筒体
の中央側に位置する小径部に挿入して固定し、さ
らに前記円筒体の一端となつている大径開口部よ
り濾過体と針体または針体を結合するためのチユ
ーブを挿入して開口端部とともに融着するように
したことを特徴とする輸血用濾過点滴筒の製造
法。1 Melt and extrude synthetic resin to form a tube,
By blowing gas into the tube to expand it in the mold and bring it into close contact with the mold, the tube has a length longer than that of the first small diameter part, the first large diameter part, the second small diameter part, and the first large diameter part. A second large diameter portion having a long length, a third small diameter portion, and a third large diameter portion having the same length as the second large diameter portion are 1.
This is repeated as a unit to form a continuous cylindrical body, and then the center of the first small diameter part and the center of the second large diameter part of the continuous cylindrical body are cut so that one end of the repeating unit is the small diameter part and the other is the small diameter part. By forming two cylindrical bodies, each consisting of a large diameter part whose end remains open with a large diameter and having one large diameter part and one small diameter part between them, a thin tube having an outer diameter approximately equal to the inner diameter of the small diameter part can be obtained. The cylindrical body is inserted into the small diameter part located in the center and fixed therein, and the filter body and the needle body or a tube for connecting the needle body is inserted through the large diameter opening at one end of the cylindrical body. A method for manufacturing a filtration drip tube for blood transfusion, characterized in that the tube is fused together with the opening end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58124922A JPS6018177A (en) | 1983-07-09 | 1983-07-09 | Production of filtering and dripping cylinder for transfusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58124922A JPS6018177A (en) | 1983-07-09 | 1983-07-09 | Production of filtering and dripping cylinder for transfusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6018177A JPS6018177A (en) | 1985-01-30 |
| JPH0158991B2 true JPH0158991B2 (en) | 1989-12-14 |
Family
ID=14897459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58124922A Granted JPS6018177A (en) | 1983-07-09 | 1983-07-09 | Production of filtering and dripping cylinder for transfusion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6018177A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104841038B (en) * | 2015-06-03 | 2018-12-21 | 四川南格尔生物科技有限公司 | A kind of safety-type Perfusion drip funnel |
-
1983
- 1983-07-09 JP JP58124922A patent/JPS6018177A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6018177A (en) | 1985-01-30 |
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