JP2511358B2 - Medical equipment - Google Patents
Medical equipmentInfo
- Publication number
- JP2511358B2 JP2511358B2 JP4136207A JP13620792A JP2511358B2 JP 2511358 B2 JP2511358 B2 JP 2511358B2 JP 4136207 A JP4136207 A JP 4136207A JP 13620792 A JP13620792 A JP 13620792A JP 2511358 B2 JP2511358 B2 JP 2511358B2
- Authority
- JP
- Japan
- Prior art keywords
- needle
- connecting member
- needle cap
- cap
- medical device
- 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
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000008280 blood Substances 0.000 description 15
- 210000004369 blood Anatomy 0.000 description 15
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 12
- 239000002985 plastic film Substances 0.000 description 11
- 229920006255 plastic film Polymers 0.000 description 11
- 239000006223 plastic coating Substances 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 9
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 238000010241 blood sampling Methods 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920006264 polyurethane film Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、第一の接続部材と第二
の接続部材を接続することにより構成される医療用具に
おいて、第一の接続部材と第二の接続部材の接続部のタ
ンパ−プル−フ構造（いたずら防止のために、一度開封
したことが目視で確認できること）を改良した医療用具
を提供するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical device constituted by connecting a first connecting member and a second connecting member, and a tamper for a connecting portion of the first connecting member and the second connecting member. The present invention provides a medical device having an improved proof structure (to prevent tampering, it is possible to visually confirm that it has been opened once).
【０００２】[0002]
【従来技術及び発明が解決しようとする課題】実公昭５
５−４９０５号公報には、血液バッグを構成する採血針
の針キャップと針基の接続部の外周にプラスチック被膜
を形成する旨が記載されている。しかしながらこのプラ
スチックは無孔質膜であるため針キャップを針基から取
りはずす際に、プラスチック膜が接続部で完全に切断し
ないで、プラスチック膜の一部が破片として残ったり、
また透明であるため針キャップを再び針基に被冠すると
開封した後が確認しにくかった。[Prior Art and Problems to be Solved by the Invention]
Japanese Patent Laid-Open No. 5-4905 describes that a plastic film is formed on the outer periphery of the connecting portion between the needle cap and the needle base of the blood collecting needle that constitutes the blood bag. However, since this plastic is a non-porous film, when the needle cap is removed from the needle base, the plastic film does not completely cut at the connection part, and some of the plastic film remains as debris,
Also, since it is transparent, it was difficult to confirm after opening the needle cap by covering the needle base again.
【０００３】また特開昭５８−１５５８６７号公報で
は、針キャップと針基の接続部に弾性体を介在させるこ
とが記載されているが、これは針キャップと針基の液密
性を維持できるが、一度針キャップを取りはずして再び
針キャップを針基に被冠しても開封した後が明確に識別
できなかった。Further, Japanese Patent Application Laid-Open No. 58-155867 discloses that an elastic body is interposed at the connecting portion between the needle cap and the needle base, but this can maintain liquid tightness between the needle cap and the needle base. However, even if the needle cap was once removed and the needle cap was capped again on the needle base, it could not be clearly identified after opening.
【０００４】また特開昭５９−１６６１６２号及び特開
昭６１−２６３４５４号には、針キャップと針基の接続
部の周縁部分に切り離し用の薄肉脆弱部を形成すること
が記載されている。しかしながらこれらの構造は複雑で
あり成形が困難であるとともに、目視で針キャップの開
封の後を確認するのは困難であった。そこで本発明者等
は以上の課題を解決するために鋭意検討を重ねた結果次
の発明に到達した。Further, JP-A-59-166162 and JP-A-61-263454 describe that a thin fragile portion for separation is formed at the peripheral portion of the connecting portion between the needle cap and the needle base. However, these structures are complicated and difficult to mold, and it is difficult to visually confirm after opening the needle cap. Therefore, the inventors of the present invention have made extensive studies in order to solve the above problems and arrived at the next invention.
【０００５】[0005]
【課題を解決するための手段】本発明は、第一の接続部
材と第二の接続部材を接続することにより構成される医
療用具において、第一の接続部材と第二の接続部材の接
続部の外周を微多孔質のプラスチック被膜により被覆し
た医療用具を提供するものである。SUMMARY OF THE INVENTION The present invention provides a medical device constructed by connecting a first connecting member and a second connecting member, wherein a connecting portion between the first connecting member and the second connecting member is provided. The present invention provides a medical device in which the outer circumference of is covered with a microporous plastic film.
【０００６】[0006]
【作用】第一の接続部材と第二の接続部材をとりはずす
際には、これらの接続部の外周を被覆するプラスチック
膜は微多孔質のため一度引き延ばされてから切れ、切れ
た後は縮む。このため第一の接続部材と第二の接続部材
を再び接続しても接続部の外周を複覆していたプラスチ
ック膜は縮んだままの状態で、再び接続部の外周を原形
通りに被覆することができないので、一度開封した証拠
が目視で容易に確認できる。When the first connecting member and the second connecting member are detached, the plastic film covering the outer periphery of these connecting portions is microporous, so it is stretched once and then cut. Shrink. Therefore, even if the first connecting member and the second connecting member are reconnected, the plastic film that has covered the outer periphery of the connection part should be covered with the outer periphery of the connection part as it is in the original shape while the plastic film remains shrunk. Since it cannot be opened, the evidence of once opened can be easily confirmed visually.
【０００７】[0007]
【実施例】血液バッグを構成する採血針の例について説
明する。図１は本発明の採血針１の概略図で、針キャッ
プ２と針基３の接続部４の外周は微多孔質のプラスチッ
ク被膜により被覆されている。本発明の微多孔質のプラ
スチック被膜は次に述べる相分離法によって形成され
る。[Example] An example of a blood collection needle constituting a blood bag will be described. FIG. 1 is a schematic view of a blood collection needle 1 of the present invention, in which the outer periphery of a connecting portion 4 between a needle cap 2 and a needle base 3 is covered with a microporous plastic film. The microporous plastic coating of the present invention is formed by the phase separation method described below.
【０００８】 ポリ塩化ビニル、ポリウレタン、熱可塑
性エラストマ−、これらの共重合体から選ばれる高分子
をジメチルホルムアミド（ＤＭＦ）、テトラヒドロフラ
ン（ＴＨＦ）、キシレン等の溶媒に溶かして高分子濃厚
液を作成してコアセルベ−ト状態にする。高分子濃厚液
中に医療用具を浸漬し、医療用具の各接続部を高分子濃
厚液で被覆して、さらにアルコ−ル、水等の凝固液中に
浸漬すると高分子は凝集しプラスチックの被膜が形成さ
れる。この凝集の過程で溶媒は凝固液中へ移動するため
プラスチック被膜は微多孔質となる。プラスチック被膜
の外側ほど凝固液中への移動速度は速いのでプラスチッ
ク被膜の外側は多数の孔が形成される。他方プラスチッ
ク被膜の内側はほとんど凝固液中へ移動が遅く、膜の内
側は孔が大となり、膜の外側は孔が小となる。これによ
り医療用具の接続部の気密性と液密性を維持することが
できる。A polymer concentrated solution is prepared by dissolving a polymer selected from polyvinyl chloride, polyurethane, a thermoplastic elastomer and a copolymer thereof in a solvent such as dimethylformamide (DMF), tetrahydrofuran (THF), xylene and the like. To the coacervated state. When a medical device is dipped in a concentrated polymer solution, each connection part of the medical device is covered with the concentrated polymer solution, and when it is further immersed in a coagulating liquid such as alcohol or water, the polymer aggregates to form a plastic film. Is formed. In the process of this aggregation, the solvent moves into the coagulating liquid, so that the plastic coating becomes microporous. Since the moving speed into the coagulating liquid is higher on the outside of the plastic coating, a large number of holes are formed on the outside of the plastic coating. On the other hand, the inside of the plastic coating is almost slow to move into the coagulation liquid ,
The sides have larger pores and the outside of the membrane has smaller pores. Thereby, the airtightness and the liquidtightness of the connection part of the medical device can be maintained.
【０００９】実施例１ 熱可塑性ポリウレタンをジメチルホルムアミドに溶解し
１０％（重量％）溶液を作成した。これにポリプロピレ
ン製針キャップとポリ塩化ビニル樹脂製の針基からなる
採血針を、前記溶液中に浸漬し一定の速度で引き上げた
後、１分間アルコ−ル中に浸漬し、一定速度でアルコ−
ルから採血針を引き上げ乾燥した。 Example 1 A thermoplastic polyurethane was dissolved in dimethylformamide to prepare a 10% (% by weight) solution. A blood collection needle consisting of a polypropylene needle cap and a polyvinyl chloride resin needle base was dipped in the solution and pulled up at a constant speed, then dipped in an alcohol for 1 minute, and then at a constant speed.
The blood collecting needle was pulled out from the bag and dried.
【００１０】
実施例２
ポリ塩化ビ
ニル樹脂をテトラヒドロフランに溶解し１０％（重量
％）溶液を作成した。これに実施例１記載の採血針を浸
漬し、以下実施例１と同様に処理した。[0010]
Example 2
10% by dissolving polyvinyl chloride resin Te preparative Rahidorofuran (wt%) was prepared. The blood collection needle described in Example 1 was immersed in this, and then the same treatment as in Example 1 was performed.
【００１１】実施例３ スチレン系エラストマ−（ＳＥＢＳ）をキシレンに溶解
し１０％（重量％）溶液を作成した。これに実施例１記
載の採血針を浸漬し、以下実施例１と同様に処理した。 Example 3 Styrene elastomer (SEBS) was dissolved in xylene to prepare a 10% (wt%) solution. The blood collection needle described in Example 1 was immersed in this, and then the same treatment as in Example 1 was performed.
【００１２】比較例１ 実施例１と同様に採血針と高分子溶液を準備した。採血
針をジメチルホルムアミドの１０％（重量％）溶液に浸
漬後、８０℃の熱風乾燥器内に入れポリウレタンの被膜
を形成した。 Comparative Example 1 A blood collection needle and a polymer solution were prepared in the same manner as in Example 1. The blood sampling needle was dipped in a 10% (wt%) solution of dimethylformamide and then placed in a hot air dryer at 80 ° C to form a polyurethane film.
【００１３】比較例２ 実施例２と同様に採血針と高分子溶液を準備した。採血
針をテトラヒドロフランの１０％（重量％）溶液に浸漬
後、８０℃の熱風乾燥器内に入れポリ塩化ビニルの被膜
を形成した。以上の実施例１から３と比較例１から２の
評価結果を表１に示す。 Comparative Example 2 A blood collection needle and a polymer solution were prepared in the same manner as in Example 2. The blood sampling needle was immersed in a 10% (wt%) solution of tetrahydrofuran, and then placed in a hot air dryer at 80 ° C to form a polyvinyl chloride film. Table 1 shows the evaluation results of Examples 1 to 3 and Comparative Examples 1 and 2 described above.
【００１４】 [0014]
【００１５】実施例１から３により、針キャップ２と針
基３の接続部４の外周に被覆された微多孔質のプラスチ
ック被膜５は、針キャップ２を針基３から取りはずす際
に、一度引き延ばされてから切れて、その後縮む。再び
針キャップ２と針基３の接続しても、図２に示すように
針キャップ２と針基３の接合部４は再びプラスチック被
膜５により被覆されることはないので一度針キャップ２
を開封した証拠が容易に確認できた。またプラスチック
被膜は微多孔質のため光を乱反射するので膜自体は白っ
ぽく見え、目視で破断面を確認するのは極めて容易であ
る。According to Examples 1 to 3, the microporous plastic coating 5 coated on the outer periphery of the connecting portion 4 between the needle cap 2 and the needle base 3 is pulled once when the needle cap 2 is removed from the needle base 3. It is stretched, cut, and then shrunk. Even if the needle cap 2 and the needle base 3 are connected again, the joint portion 4 between the needle cap 2 and the needle base 3 is not covered with the plastic film 5 again as shown in FIG.
The proof that the box was opened was easily confirmed. Further, since the plastic film is microporous and diffusely reflects light, the film itself looks whitish and it is extremely easy to visually confirm the fracture surface.
【００１６】他方比較例１及び２により形成された針キ
ャップ２と針基３の接続部４の外周に被覆されたプラス
チック被膜５は透明で、針キャップ２を針基３から取り
はずす際に、ほとんど変形することなく破断し、再び針
キャップ２を針基３に接続すると破断面がほぼ元通りに
合致するので針キャップ２を開封した後が確認できなか
った。On the other hand, the plastic coating 5 formed on the outer circumference of the connecting portion 4 between the needle cap 2 and the needle base 3 formed in Comparative Examples 1 and 2 is transparent, and when the needle cap 2 is removed from the needle base 3, it is almost transparent. When the needle cap 2 was opened and the needle cap 2 was connected again to the needle base 3, the fracture surface was almost the same as that of the original shape.
【００１７】本発明の実施例１から３では、被膜の厚さ
は５０から９０μｍ、被膜の破断強度は０．３８から
０．４４kg・cm に設定でき採血針の気密性、液密性を維
持するのにも十分な強度である。また本発明の実施例で
は、微多孔質のプラスチック被膜を形成するための高分
子溶液の濃度は５から１５％（重量％）のものが使用さ
れる。またコアセルベ−ト（高分子濃厚液の小滴）の状
態を作るためには８から１３％（重量％）が好ましい。In Examples 1 to 3 of the present invention, the thickness of the coating can be set to 50 to 90 μm and the breaking strength of the coating can be set to 0.38 to 0.44 kg · cm, and the airtightness and the liquidtightness of the blood sampling needle can be maintained. It is strong enough to do. Further, in the embodiment of the present invention, the concentration of the polymer solution for forming the microporous plastic coating is 5 to 15% (% by weight). Further, in order to form a state of coacervate (small droplet of concentrated polymer liquid), 8 to 13% (wt%) is preferable.
【００１８】本発明の実施例では血液バッグを構成する
採血針の例について説明したが、本発明はタンパ−プル
−フ性を要求される医療用具の接続部材の接続部に被覆
する目的であれば何でも使用することができる。In the embodiment of the present invention, the example of the blood collecting needle constituting the blood bag has been described, but the present invention is intended to cover the connecting portion of the connecting member of the medical device which requires the tamper proof property. Anything can be used.
【００１９】[0019]
【発明の効果】本発明の微多孔膜は一度開封した後が目
視できわめて容易に確認することができるのでいたずら
を防止でき安心して治療に使用することができる。EFFECTS OF THE INVENTION Since the microporous membrane of the present invention can be visually confirmed very easily after it has been opened once, it can prevent mischief and can be safely used for treatment.
【図１】本発明の実施例に使用した採血針の概略図FIG. 1 is a schematic view of a blood collection needle used in an example of the present invention.
【図２】図１の使用状態図FIG. 2 is a use state diagram of FIG.
１ 採血針 ２ 針キャップ ３ 針基 ４ 接続部 ５ プラスチック被膜 1 Blood collection needle 2 Needle cap 3 Needle base 4 Connection part 5 Plastic coating
Claims (1)
ることにより構成される医療用具において、第一の接続
部材と第二の接続部材の接続部の外周を微多孔質のプラ
スチック被膜により被覆したことを特徴とする医療用
具。1. A medical device constituted by connecting a first connecting member and a second connecting member, wherein the outer periphery of the connecting portion of the first connecting member and the second connecting member is a microporous plastic. A medical device coated with a film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4136207A JP2511358B2 (en) | 1992-04-28 | 1992-04-28 | Medical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4136207A JP2511358B2 (en) | 1992-04-28 | 1992-04-28 | Medical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06315476A JPH06315476A (en) | 1994-11-15 |
| JP2511358B2 true JP2511358B2 (en) | 1996-06-26 |
Family
ID=15169828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4136207A Expired - Fee Related JP2511358B2 (en) | 1992-04-28 | 1992-04-28 | Medical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2511358B2 (en) |
-
1992
- 1992-04-28 JP JP4136207A patent/JP2511358B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06315476A (en) | 1994-11-15 |
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Legal Events
| Date | Code | Title | Description |
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