JPS62227316A - Blood sampling needle - Google Patents
Blood sampling needleInfo
- Publication number
- JPS62227316A JPS62227316A JP61071280A JP7128086A JPS62227316A JP S62227316 A JPS62227316 A JP S62227316A JP 61071280 A JP61071280 A JP 61071280A JP 7128086 A JP7128086 A JP 7128086A JP S62227316 A JPS62227316 A JP S62227316A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- blood collection
- blood
- puncture
- needle
- 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.)
- Granted
Links
- 238000010241 blood sampling Methods 0.000 title description 16
- 210000004369 blood Anatomy 0.000 claims description 81
- 239000008280 blood Substances 0.000 claims description 81
- 210000004204 blood vessel Anatomy 0.000 claims description 11
- 238000005422 blasting Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000006837 decompression Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010876 biochemical test Methods 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 210000005259 peripheral blood Anatomy 0.000 description 1
- 239000011886 peripheral blood Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は１人体の血液採取等に用いられる採血針に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a blood collection needle used for collecting blood from a human body.
［従来の技術］
従来１例えば臨床検査、生化学検査に際に行なう血液採
取には、第７図ないし第８図に示す減圧採血共が用いら
れる。第７図は従来の減圧採血共の使用前の状態を示す
断面図、第８図は同使用時の状態を示す断面図である。[Prior Art] Conventionally 1, for example, a vacuum blood sampling system shown in FIGS. 7 and 8 is used to collect blood for clinical tests and biochemical tests. FIG. 7 is a cross-sectional view showing a conventional vacuum blood sampling device before use, and FIG. 8 is a cross-sectional view showing the same condition during use.
この減圧採血具１０は、第７図に示すように減圧採血管
１１と採血針１２とを備えてなる採血ホルダー１３から
構成される。減圧採血管１１は、ガラス材、透明樹脂材
等で形成される管体１４のＬ方間口部に栓体１５を取付
けてなり、該管体１４の内部を減圧状態としてなる。す
なわち、栓体１５は、管体１４の内部の減圧状態を維持
し、また後述するように中空針を穿刺可能とすることが
必要とされる。また、栓体１５は、穿刺された中空針を
扶去した後において、針孔を閉塞して液密状態を維持す
ることが要求される。この点で従来栓体１５には、ゴム
材等を用いることが好適とされていた。As shown in FIG. 7, this reduced pressure blood collection device 10 is composed of a blood collection holder 13 comprising a reduced pressure blood collection tube 11 and a blood collection needle 12. The reduced pressure blood collection tube 11 has a stopper 15 attached to the L-direction opening of a tube body 14 made of a glass material, a transparent resin material, etc., and the inside of the tube body 14 is brought into a reduced pressure state. That is, the plug body 15 is required to maintain a reduced pressure state inside the tube body 14 and to be able to be punctured with a hollow needle as described later. Further, the plug body 15 is required to close the needle hole and maintain a liquid-tight state after removing the punctured hollow needle. In this respect, it has conventionally been preferable to use a rubber material or the like for the plug body 15.
一方、採血ホルダー１３は、下端が開放した筒状のホル
ダ一本体１７を有し、その上方先端部に採血針１２を取
着してなる。採血針１２は、中空の針本体１８の一端側
に血管穿刺部１９を備えてなり、他端側には上記減圧管
１１の栓体１５に穿刺される栓体穿刺部２０が備えられ
る。針本体１８の中間部分にはハブ２１が備えられ、該
ハブ２１には雄ネジ部２２が形成される。採血針１２の
ホルダ一本体１７に対する取着は、ホルダ一本体１７の
上方先端部に形成される酸ネジ部２３に上記雄ネジ部２
２を螺合することにより行なわれる。さらにホルダ一本
体１７に取着される採血針１２の栓体穿刺部２０は、鞘
状の被覆カバー２４にて被覆される。すなわち、この被
覆カバー２４は、軟質ゴム材等の拡縮自在な材質で形成
され、第７図に示す未使用状態で栓体穿刺部２０を被覆
＋ｉ［能としている。On the other hand, the blood collection holder 13 has a cylindrical holder main body 17 with an open lower end, and a blood collection needle 12 is attached to the upper tip thereof. The blood collection needle 12 includes a blood vessel puncture section 19 at one end of a hollow needle body 18, and a plug puncture section 20 that is inserted into the plug 15 of the decompression tube 11 at the other end. A hub 21 is provided at the intermediate portion of the needle body 18, and the hub 21 is formed with a male threaded portion 22. The blood collection needle 12 is attached to the holder body 17 by attaching the male threaded portion 2 to the acid threaded portion 23 formed at the upper tip of the holder body 17.
This is done by screwing the two together. Furthermore, the plug piercing portion 20 of the blood collection needle 12 attached to the holder main body 17 is covered with a sheath-like covering cover 24 . That is, the covering cover 24 is made of a material that can be expanded and contracted, such as a soft rubber material, and can cover the plug puncture section 20 in an unused state as shown in FIG.
このような構成からなる減圧採血具ｌＯを用いて血液採
取を行なう場合、先ず、採血ホルダー１３に備えられる
採血針１２の血管穿刺部１９を、人体等の血管に穿刺す
る０次に減圧管１１を第７図の矢印Ａに示すようにホル
ダ一本体１７内に挿入する。この時、採血針１２の栓体
穿刺部２０は、第８図に示すように被覆カバー２４．栓
体１５を穿刺し、減圧状態とされる管体１４の内部に穿
通されることとなる。この際、被清カバー２４は、栓体
１５とホルダ一本体１７との間で蛇腹状に折り畳まれる
こととなる。このようにし、中空の針本体１８の他端側
か第８図に示すように管体１４の内部に穿通されると、
該管体１４の内部の減圧状態により、中空の針本体１８
の血管穿刺部１９から栓体穿刺部２０側に血液を導入す
ることが回部となる。これにより、管体１４の内部に血
液を流入し、採血が行なわれることとなる。When blood is collected using the vacuum blood sampling device IO having such a configuration, first, the blood vessel puncture portion 19 of the blood sampling needle 12 provided in the blood sampling holder 13 is inserted into the blood vessel of the human body, etc. Next, the vacuum tube 11 is inserted into the holder main body 17 as shown by arrow A in FIG. At this time, the plug puncture section 20 of the blood collection needle 12 is inserted into the covering cover 24 as shown in FIG. The plug body 15 is punctured, and the inside of the tube body 14, which is in a reduced pressure state, is penetrated. At this time, the cover 24 to be cleaned is folded into a bellows shape between the plug body 15 and the holder main body 17. In this way, when the other end of the hollow needle body 18 is penetrated into the inside of the tube body 14 as shown in FIG.
Due to the reduced pressure inside the tube body 14, the hollow needle body 18
Introducing blood from the blood vessel puncture part 19 to the plug puncture part 20 side is the turning part. As a result, blood flows into the tube body 14 and blood is collected.
管体１４の内部に所定量の血液が採取されると、減圧採
血管１１が採血ホルダー１３から取外される。取外され
た状態においてそれまで折り畳まれていた被覆カバー２
４は第７図に示すように元の状態に復元されることとな
る。さらに多量の採血を行なう場合、第７図に示すよう
に未使用の減圧採血管１１を矢印Ａに示すようにホルダ
一本体１７内に押入すればよい、採血が完了されると血
管穿刺部１９は人体から抜去される。Once a predetermined amount of blood has been collected inside the tubular body 14, the reduced pressure blood collection tube 11 is removed from the blood collection holder 13. Covering cover 2 that was previously folded in the removed state
4 will be restored to its original state as shown in FIG. If a larger amount of blood is to be collected, as shown in FIG. is removed from the human body.
［発明が解決しようとする問題点］
しかしながら、上記従来の減圧採血具１０にあっては、
採血時において被覆カバー２４が第８図に示すように圧
縮されることとなる。圧縮される被覆カバー２４は、一
般にゴム材等の弾性材で形成されるため、減圧採血管１
１に対して矢示Ｂ方向の反力を作用することとなる。こ
のため、従来、この種の減圧採血具ｌＯにおいては、採
血中に栓体１５から栓体穿刺部２０が抜け、採血ホルタ
−１３に対して減圧管１１が離脱する不具合（いわゆる
キックバック）を生ずることがあった。[Problems to be Solved by the Invention] However, in the conventional reduced pressure blood sampling device 10,
During blood collection, the covering cover 24 is compressed as shown in FIG. 8. The cover 24 to be compressed is generally made of an elastic material such as rubber, so the reduced pressure blood collection tube 1
1, a reaction force in the direction of arrow B is applied. For this reason, conventionally, in this type of vacuum blood sampling device 10, the problem of the plug puncture part 20 coming off from the plug 15 during blood collection and the vacuum tube 11 coming off from the blood collection holter 13 (so-called kickback) has been avoided. Sometimes it happened.
この種の不具合を防止するため、従来、被覆カバー２４
の弾性力を低下させたり、また栓体１５に塗布される栓
体穿刺部２０の潤滑用の潤滑剤の性能を低下するように
していた。In order to prevent this kind of malfunction, conventionally, the covering cover 24
In addition, the performance of the lubricant applied to the plug body 15 for lubricating the plug puncture portion 20 is reduced.
しかしながら、このような方法を用いる場合、減圧採血
管１１を採血ホルダー１３から取外した際に、被Ｙａカ
バー２４が元の状態になかなか復元されなかったり、ま
た、栓体穿刺部２０の栓体１５に対する穿刺抵抗が増大
する等の不具合があった。However, when such a method is used, when the vacuum blood collection tube 11 is removed from the blood collection holder 13, the Ya cover 24 may not be easily restored to its original state, or the plug 15 of the plug puncture section 20 may There were problems such as increased puncture resistance.
［発明の目的］
本発明は、採血中において圧縮される被覆カバーの反力
により、針本体の栓体穿刺部が減圧採血管の栓体から抜
けることを防止し、円滑かつ安全な採血を行なうことを
目的としている。[Objective of the Invention] The present invention prevents the plug puncture portion of the needle body from coming off the plug of the vacuum blood collection tube due to the reaction force of the cover that is compressed during blood collection, thereby allowing smooth and safe blood collection. The purpose is to
［問題点を解決するための手段］
ｌ二記目的を達成するために、本発明は、中空状の針本
体の中間部分にハブを有し、一端側に血管穿刺部を備え
、他端側に減圧採血管の栓体に穿刺される栓体穿刺部を
備えるとともに、該栓体穿刺部を、該ハブから伸びる鞘
状の拡縮自在な弾性を有する被覆カバーにて被覆してな
る採血針において、」−記栓体穿刺部は、その周上に栓
体に穿刺した状態で該栓体と係合する凹凸部を備えてな
り該栓体と該凹凸部の摩擦抵抗が、該栓体への該栓体穿
刺部の穿刺に伴ない圧縮される該被覆カバーの反発力以
上であることとしでいる。[Means for Solving the Problems] In order to achieve the second object, the present invention has a hub in the middle part of a hollow needle body, a blood vessel puncture part on one end, and a needle on the other end. A blood collection needle comprising a stopper puncture part that is inserted into a stopper of a vacuum blood collection tube, and the stopper puncture part is covered with a sheath-shaped elastic cover extending from the hub and having expandable and contractible elasticity. , ” - The stopper puncturing part is provided with an uneven part on its circumference that engages with the stopper when the stopper is punctured, and the frictional resistance between the stopper and the uneven part is applied to the stopper. The repulsion force of the cover, which is compressed due to the puncture of the plug puncture portion, shall be greater than or equal to the repulsive force of the cover.
また１本発明における凹凸部は、栓体穿刺部の周上をブ
ラスト加工して形成されるようにしている。Further, the uneven portion in the present invention is formed by blasting the circumference of the punctured portion of the plug body.
［発明の詳細な説明］ 以下、本発明の実施例を図面を参照して説明する。[Detailed description of the invention] Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例に係る採血針を示す正面図、
第１図（Ａ）は第１図のＡ部を拡大して示す図、第１図
（Ｂ）は第１図（Ａ）のＢ部の表面凹凸状Ｆｇを示す図
、第２図は採血針を用いて形成される減圧採血具の使用
前の状態を示す断面図、第３図は同使用時の状態を示す
断面図、第４図は第２図に示す減圧採血具を用いて人体
の腕から採血する状態を示す斜視図である。第５図は表
面形状測定機で実施例１に係る凹凸部を測定した状態を
示す線図、第６図は表面形状測定機で比較例に係る凹凸
部を測定した状態を示す線図である。FIG. 1 is a front view showing a blood collection needle according to an embodiment of the present invention;
Figure 1 (A) is an enlarged view of part A in Figure 1, Figure 1 (B) is a diagram showing the surface unevenness Fg of part B in Figure 1 (A), and Figure 2 is blood sampling. A cross-sectional view showing the state before use of the vacuum blood sampling device formed using a needle, FIG. 3 is a cross-sectional view showing the state during use, and FIG. FIG. 2 is a perspective view showing a state in which blood is collected from the arm of a patient. FIG. 5 is a diagram showing the state in which the uneven portion according to Example 1 was measured with a surface shape measuring device, and FIG. 6 is a diagram showing the state in which the uneven portion according to the comparative example was measured with the surface shape measuring device. .
第１図に示す採血針３０を用いて形成される減圧採血３
ｔ３１は、第２図に示すように減圧採血管３２と採血ホ
ルダー３３から構成される。減圧採血管３２は、透明材
で形成される管体３４の上方間「１部に栓体３５を取付
けてなり、該管体３４の内部を減圧状！６としている。Vacuum blood collection 3 formed using the blood collection needle 30 shown in FIG.
t31 is composed of a reduced pressure blood collection tube 32 and a blood collection holder 33, as shown in FIG. The reduced pressure blood collection tube 32 is constructed by attaching a stopper 35 to the upper part of a tube body 34 made of a transparent material, so that the inside of the tube body 34 is in a reduced pressure state!6.
管体３４の材質としては、ガラス材の他にポリ塩化ビニ
ル、ポリエチレン等の樹脂材が使用可能である。一方、
栓体３５は、管体３４の内部の減圧状！懲を維持し、ま
た後述するように中空針を穿刺可能とすることが必要と
される。また栓体３５は、穿刺された中空側を抜去した
後において、針孔を閉塞して液密状態を維持することが
要求される。このため、該栓体３５は、ゴム材等を用い
て形成するようにしている。As the material for the tube body 34, resin materials such as polyvinyl chloride and polyethylene can be used in addition to glass materials. on the other hand,
The plug body 35 is in the form of a reduced pressure inside the tube body 34! It is necessary to maintain the puncture distance and to be able to insert a hollow needle as described below. Further, the plug body 35 is required to close the needle hole and maintain a liquid-tight state after the punctured hollow side is removed. For this reason, the plug body 35 is made of a rubber material or the like.
採血ホルダー３３は、下端が開放した筒状のホルダ一本
体３７を有し、該ホルダ一本体３７の１−力先端部には
、第１図に示す採血針３０が取着される。採血針３０は
、中空の針本体３８の一端側に面？ｉτ穿刺部３９を備
えてなり、他端側には上記減圧採血管３２の栓体３５に
穿刺される栓体穿刺部４０が備えられる。針本体３８の
中間部分にはハブ４１が備えられ、該ハブ４１には雄ネ
ジ部４２が形成される。採血針３０のホルダ一本体３７
に対する取着は、ホルダ一本体３７の上方先端部に形成
される酸ネジ部４３に上記雄ネジ部４２を螺合すること
により行なわれる。さらにホルダ一本体３７に取着され
る採血針３０の栓体穿刺部４０には、鞘状の被覆カバー
４４が被覆される。この被覆カバー４４は、拡縮自在な
弾性材で形成される。The blood collection holder 33 has a cylindrical holder body 37 with an open lower end, and a blood collection needle 30 shown in FIG. 1 is attached to the tip end of the holder body 37. The blood collection needle 30 has a hollow needle body 38 with a surface on one end side. An iτ puncture section 39 is provided, and a stopper puncture section 40 that is inserted into the stopper 35 of the reduced pressure blood collection tube 32 is provided at the other end. A hub 41 is provided at the intermediate portion of the needle body 38, and a male threaded portion 42 is formed on the hub 41. Holder body 37 of blood sampling needle 30
Attachment to the holder body 37 is carried out by screwing the male threaded portion 42 into a threaded threaded portion 43 formed at the upper tip of the holder main body 37. Furthermore, a sheath-like cover 44 covers the plug puncture portion 40 of the blood collection needle 30 attached to the holder main body 37 . This cover 44 is made of an elastic material that can be expanded and contracted.
このようにして、被覆カバー４４に被覆される栓体穿刺
部４０の先端部周上には、第１図（Ａ）に示すように表
面に凹凸部４５が形成される。この凹凸部４５は、金属
性の栓体穿刺部４ｏの外周表面にブラスト加工を施すこ
とにより形成される。ブラスト加工の条件としては、剛
体粒子（アルミナ、炭化ケイ素、ケイ砂、シリコンカー
バイト等）を圧縮空気と共に栓体穿刺部４０の外周表面
上に噴射し、衝突させることが最適とされる。In this way, an uneven portion 45 is formed on the circumference of the distal end portion of the plug puncture portion 40 covered by the covering cover 44, as shown in FIG. 1(A). The uneven portion 45 is formed by blasting the outer peripheral surface of the metallic plug puncture portion 4o. The optimum conditions for blasting are to inject rigid particles (alumina, silicon carbide, silica sand, silicon carbide, etc.) together with compressed air onto the outer circumferential surface of the plug puncture section 40 and cause them to collide.
圧縮空気の圧力は２〜１０Ｋｇ／ｃｍ’、好しくは４〜
８Ｋｇ／ ｃゴが望ましい。The pressure of compressed air is 2 to 10 Kg/cm', preferably 4 to 10 kg/cm'.
8Kg/c is desirable.
このようにして、凹凸部４５は、栓体穿刺部４０の外周
表面にブラスト加工を施すことにより形成されるが、そ
の他にも栓体穿刺部４０の外周表面に次のような処理を
施すことによっても形成可能とされる。その他の加工処
理方法としては、例えばイ）薬品処理；酸（硝酸、硫酸
、ｆｉ１酸）や金属塩の水溶液（ＦｅＣ１＋ 、 Ｃｕ
Ｃ１ｒ 、 ＣｒＣ：ｌ：＋等）等を用いての処理１口
）放゛屯加工、ハ）電解加重、二）研削等がある。In this way, the uneven portion 45 is formed by blasting the outer circumferential surface of the plug puncture section 40, but the following treatments may also be performed on the outer circumferential surface of the plug puncture section 40. It can also be formed by Other processing methods include, for example, a) chemical treatment; acids (nitric acid, sulfuric acid, fi1 acid) and aqueous solutions of metal salts (FeC1+, Cu
Treatments using C1r, CrC:l:+, etc.) include 1) radiation processing, 3) electrolytic loading, and 2) grinding.
このように形成された凹凸部の大きさは、第１図（Ｂ）
で示すＴが０．２〜３ ｐ−ｍ程度とされ、好ましくは
０．５〜２ル膳であることが望ましい、また、これらの
凹凸部が表面方向において３０ｐｍ以下毎に、好ましく
は２部用国以トイηに、さらに好ましくは１０ＩＬｍ以
下毎にあるのが望ましい。The size of the uneven portion formed in this way is shown in Fig. 1(B).
It is desirable that T shown by 0.2 to 3 pm, preferably 0.5 to 2 pm, and preferably 2 parts for every 30 pm or less of these uneven parts in the surface direction. It is desirable that there be one for every 10 ILm or less, more preferably every 10 ILm or less.
このような構成からなる減圧採血Ａ３１を用いて血液採
取を行なう場合、先ず第４図に示すように人体の腕４６
に採血ホルタ−３３に備えられる抹血側３０の血管穿刺
部３９を穿刺する。次に減圧採血側３２を第２図および
第４図に示すように矢印り方向でホルダ一本体３７内に
押入する。この状５Ｅｊ、で先ず、栓体穿刺部４０が栓
体３５に穿刺され、表面に形成される凹凸部４５が栓体
３５に摺接する状態となる。さらに栓体３５に穿刺され
た栓体穿刺部４０は、減圧採血管３２を矢印り方向に、
押入することで減圧状態とされる管体３４の内部に穿通
されることとなる。このようにして、第３図に示すよう
に、中空の針本体３８の他端部が管体３４の内部に穿通
されると、Ｉｒｆ体３４の内部の減圧状態により、中空
の針本体３８の血Ｙ穿刺部３９から栓体穿刺部４０側に
血液を導入することが可能となる。これにより、管体３
４の内部ｔこ血液を流入し、採血が行なわれることとな
る、
Ｊ’： ：ｆｎ中において、被ＹＯカバー４４は第３図
に示ｔように蛇腹状に折り畳まれ、圧縮されることとな
る。このため、該圧縮される被覆カバー４４は、押入さ
れる圧縮管３２に対し矢印Ｅ方向の反力を作用すること
となる。このように栓体穿刺部４０に抜去方向での力が
作用すると、該栓体穿刺部４０に形成される凹凸部４５
と栓体３５の間で摩擦が高まり係合することとなる。こ
れにより、採血中において、栓体３５から栓体穿刺部４
０が抜け、採血ホルダー３３に対して減圧採血管３２が
離脱する不具合（キックパック）を防止することが可能
となる。ここで栓体３５と凹凸部４５との摩擦抵抗は、
圧縮され、折り畳まれる被覆カバー４４の反発力よりも
大きく設定される。When blood is collected using the reduced pressure blood collection A31 having such a configuration, first, as shown in FIG.
Then, a blood vessel puncture section 39 on the peripheral blood side 30 provided in the blood collection holter 33 is punctured. Next, the reduced pressure blood collection side 32 is pushed into the holder main body 37 in the direction of the arrow as shown in FIGS. 2 and 4. In this state 5Ej, the plug piercing portion 40 first pierces the plug 35, and the uneven portion 45 formed on the surface comes into sliding contact with the plug 35. Furthermore, the stopper puncture part 40 that has been inserted into the stopper 35 moves the reduced pressure blood collection tube 32 in the direction of the arrow.
By pushing it in, the inside of the tube body 34, which is brought into a reduced pressure state, is penetrated. In this way, as shown in FIG. 3, when the other end of the hollow needle body 38 is penetrated into the inside of the tube body 34, the reduced pressure inside the Irf body 34 causes the hollow needle body 38 to open. Blood can be introduced from the blood Y puncturing part 39 to the plug puncturing part 40 side. As a result, the pipe body 3
During the flow of blood into the interior of 4 and blood collection, the YO cover 44 is folded into a bellows shape and compressed as shown in FIG. 3. Become. Therefore, the compressed cover 44 exerts a reaction force in the direction of arrow E on the compressed tube 32 that is pushed into it. When the force in the removal direction acts on the plug puncture part 40 in this way, the uneven part 45 formed on the plug puncture part 40
Friction increases between the plug body 35 and the plug body 35, resulting in engagement. As a result, during blood collection, from the plug body 35 to the plug puncture portion 4.
It is possible to prevent a problem (kick pack) in which the decompression blood collection tube 32 is detached from the blood collection holder 33 due to the zero being removed. Here, the frictional resistance between the plug body 35 and the uneven portion 45 is
The repulsive force is set to be larger than the repulsive force of the covering cover 44 which is compressed and folded.
管体３４の内部に所定量の血液が採取されると、減圧採
血管３２が採血ホルダー３３から取外される。減圧採血
管３２を取外した状態において、それまで折り畳まれて
いた被覆カバー４４は第２図に示す元の状態に復元され
ることとなる。Once a predetermined amount of blood has been collected inside the tubular body 34, the reduced pressure blood collection tube 32 is removed from the blood collection holder 33. When the vacuum blood collection tube 32 is removed, the covering cover 44, which has been folded up to that point, is restored to its original state as shown in FIG.
さらに多量の採血を行なう場合、第２図および第４図に
示すように未使用の減圧採血管３２を矢印りに−示すよ
うにホルダ一本体３７内に押入すればよい、採血が完了
されると血管穿刺部３９は、腕４６から取外される。If a larger amount of blood is to be collected, as shown in FIGS. 2 and 4, the unused vacuum blood collection tube 32 can be pushed into the holder main body 37 as shown by the arrow, and the blood collection is completed. and the vascular puncture section 39 is removed from the arm 46.
このように１−記実施例に係る血管穿刺３０によれば、
栓体穿刺部４０を栓体３５に穿刺して採血を行なう際、
凹凸部４５が栓体３５に対してＷＩ接し、保合すること
となり、この係合力が圧縮状ｊ島にある被覆力／＜−４
４の反力に対抗作用することとなる。これにより、栓体
穿刺部４０が栓体３５から抜ｔすることが防１ヒされ、
円滑かつ安全な採血を行なうことが可ｆ蔚となる。As described above, according to the blood vessel puncture 30 according to the first embodiment,
When puncturing the plug body 35 with the plug body puncture part 40 to collect blood,
The uneven portion 45 comes into WI contact with the plug body 35 and is secured, and this engagement force is the covering force in the compressed j island /<-4
This will counteract the reaction force of 4. This prevents the plug puncture part 40 from being pulled out from the plug 35,
It becomes possible to perform blood sampling smoothly and safely.
ここで栓体穿刺部４０に対し凹凸部４５を形成した具体
例を以下のように示す。Here, a specific example in which the concavo-convex portion 45 is formed on the plug puncture portion 40 will be shown below.
［実施例１］
次の条件のブラスト加工により凹凸部の形成を行なった
。[Example 1] The uneven portions were formed by blasting under the following conditions.
針本体：チル七社製２１Ｇマルチプル採血針加Ｉ−条件
：ブラスト加工
１）剛 体 粒 子：モ均粒径２５鉢アルミナ粒子２）
ブラスト装置： Ｉ：ＯＭＧＯ社製マイクロプラスタ
ーＭｅ−１ｏ。Needle body: 21G multiple blood collection needle manufactured by Chill Shichisha I-Conditions: Blasting 1) Rigid particles: Average particle size 25 pot alumina particles 2)
Blasting device: I: Microplaster Me-1o manufactured by OMGO.
３）条 件 ：エア圧 ５ｋｇ／ ｃゴカッテ
ィングスピード ８０″
４）凹凸部の形成範囲：形成長さＬ−ニアーｍ周形成固
定領域→全周
［実施例２］
周形成領域を１／２周にした以外は実施例１と同様に行
なった。3) Conditions: Air pressure 5kg/c Cutting speed 80'' 4) Formation range of uneven parts: Shape growth L-Near m Circumference formation fixed area → Full circumference [Example 2] 1/2 circumference of the circumference formation area The same procedure as in Example 1 was carried out except that .
［実施例３］
形成長さＬを５１にした以外は実施例１と同様に行なっ
た。[Example 3] The same procedure as in Example 1 was carried out except that the shape growth length L was set to 51.
し実施例４］
形成長さＬを５畷曽にし、周形成領域を１７２周にした
以外は実施例１と同様に行なった。Example 4] The same procedure as in Example 1 was carried out except that the shape growth length L was set to 5 turns and the circumference forming area was set to 172 turns.
これらの実施例１〜４ごとに２０本ずつに゛）いてキッ
クバックの試験を行なった。結果を表１に示す、なお、
比較例として無処理のチル七社製２１Ｇマルチ針を用い
た。A kickback test was conducted using 20 pieces for each of Examples 1 to 4. The results are shown in Table 1.
As a comparative example, an untreated 21G multi-needle manufactured by Chill Shichisha was used.
また、実施例１の凹凸部を表面形状測定機（小板研究所
ＭＯＤＥＬ ５Ｅ−３Ａ）で４一定すると第５図のよう
であった。また、比較例の表面は第６図のようであった
。Further, when the uneven portions of Example 1 were measured using a surface profile measuring machine (Koita Research Institute MODEL 5E-3A) at a constant value of 4, the results were as shown in FIG. Moreover, the surface of the comparative example was as shown in FIG.
表 １
この表から凹凸部４５の形成範囲を形成長さし＝ ５ｍ
ｍ以」二でかつ周形成領域半周以上とすれば。Table 1 From this table, the formation range of the uneven portion 45 is determined by the shape growth scale = 5 m
m or more and the circumference forming area is half the circumference or more.
キックパックをほとんど防止できることがわかる。It can be seen that most kick packs can be prevented.
［発明の効果］
以にのように１本発明は、中空状の針本体の中間部分に
ハブを有し、一端側に血管穿刺部を備え、他端側に減圧
採血管の栓体に穿刺される栓体穿刺部を備えるとともに
、該栓体穿刺部を、該ハブから伸びる鞘状の拡縮自在な
弾性を有する被稜カバーにて被覆してなる採血針におい
て、上記栓体穿刺部は、その周上に栓体に穿刺した状態
で該栓体と係合する凹凸部を備えてなり、該栓体と該凹
凸部の摩擦抵抗が、該栓体への該栓体穿刺部の穿刺に伴
ない圧縮される該被覆カバーの反発力以上であることと
したため、採血中において圧縮される被覆カバーの反力
により、針本体の栓体穿刺部が減圧採血管の栓体から抜
けることを防止し、円滑かつ安全な採血を行なうことが
できるという効果がある。[Effects of the Invention] As described above, the present invention has a hub in the middle part of a hollow needle body, a blood vessel puncture part on one end, and a blood vessel puncture part on the other end for puncturing the stopper of a vacuum blood collection tube. In a blood collection needle comprising a plug puncturing part, the plug puncturing part is covered with a sheath-like elastic ridged cover extending from the hub, the plug puncturing part comprising: It has an uneven part on its circumference that engages with the stopper when the stopper is punctured, and the frictional resistance between the stopper and the uneven part prevents the puncture part of the stopper from puncturing the stopper. The repulsive force of the cover, which is compressed during blood collection, is set to be greater than or equal to the repulsive force of the cover, which is compressed during blood collection, to prevent the punctured part of the needle body from coming off the stopper of the vacuum blood collection tube. This has the effect of allowing smooth and safe blood sampling.
また１本発明における凹凸部は、栓体穿刺部の周トをブ
ラスト加工して形成されることとしたため、該凹凸部の
形成を容易に行なうことができる。Furthermore, since the uneven portion in the present invention is formed by blasting the circumference of the punctured portion of the plug, the uneven portion can be easily formed.
第１図は本発明の一実施例に係る採血針を示す正面図、
第１図（Ａ）は第１図のＡ部を拡大して示す図、第１図
（Ｂ）は第１図（Ａ）のＢ部の表面凹凸状態を示す図、
第２図は採血針書を用いて形成される減圧採血具の使用
前の状態を示す断面図、第３図は同使用時の状態を示す
断面図、第４図は第２図に示す減圧採血具を用いて人体
の腕から採血する状態を示す斜視図である。第５図は表
面形状測定機で実施例１に係る凹凸部を測定した状！Ｅ
；を示す線図、第６図は表面形状測定機で比較例に係る
凹凸部を測定した状態を示す線図、第７図は従来の減圧
採血共の使用前の状態を示す断面図、第８図は同使用時
の状態を示す断面図である３０・・・採血針、３１・・
・減圧採血具、３２・・・減圧採血管、３３・・・採血
ホルダー、３５・・・栓体、３８・・・針本体、３９・
・・血管穿刺部、４０・・・栓体穿刺部。
４４・・・被覆カバー、４５・・・凹凸部。FIG. 1 is a front view showing a blood collection needle according to an embodiment of the present invention;
FIG. 1(A) is an enlarged view of part A in FIG. 1, FIG. 1(B) is a diagram showing the surface unevenness of part B in FIG. 1(A),
Figure 2 is a cross-sectional view showing the vacuum blood sampling device formed using a blood sampling needle before use, Figure 3 is a cross-sectional view showing the same state during use, and Figure 4 is the reduced pressure shown in Figure 2. FIG. 2 is a perspective view showing a state in which blood is collected from an arm of a human body using a blood collection tool. Figure 5 shows the unevenness of Example 1 measured using a surface profile measuring machine! E
; FIG. 6 is a diagram showing the state in which the unevenness according to the comparative example was measured with a surface profile measuring machine; FIG. 7 is a cross-sectional view showing the state before use of the conventional vacuum blood sampling; Figure 8 is a cross-sectional view showing the state in use. 30...Blood collection needle, 31...
- Decompression blood collection device, 32... Decompression blood collection tube, 33... Blood collection holder, 35... Stopper, 38... Needle body, 39.
... Blood vessel puncture section, 40... Plug body puncture section. 44... Covering cover, 45... Uneven part.
Claims (2)
に血管穿刺部を備え、他端側に減圧採血管の栓体に穿刺
される栓体穿刺部を備えるとともに、該栓体穿刺部を、
該ハブから伸びる鞘状の拡縮自在な弾性を有する被覆カ
バーにて被覆してなる採血針において、上記栓体穿刺部
は、その周上に栓体に穿刺した状態で該栓体と係合する
凹凸部を備えてなり、該栓体と該凹凸部の摩擦抵抗が、
該栓体への該栓体穿刺部の穿刺に伴ない圧縮される該被
覆カバーの反発力以上であることを特徴とする採血針。(1) It has a hub in the middle part of the hollow needle body, has a blood vessel puncture part on one end side, has a plug puncture part to be punctured into the stopper of a vacuum blood collection tube on the other end, and body puncture site,
In the blood collection needle covered with a sheath-like elastic covering cover extending from the hub and having elasticity that can be expanded and contracted, the plug piercing part engages with the plug while piercing the plug on its circumference. It is provided with an uneven part, and the frictional resistance between the plug body and the uneven part is
A blood collection needle characterized in that the repulsion force is greater than the repulsive force of the cover that is compressed as the plug body is punctured by the plug body piercing portion.
して形成されてなる特許請求の範囲第１項に記載の採血
針。(2) The blood collection needle according to claim 1, wherein the uneven portion is formed by blasting the circumference of the plug puncture portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61071280A JPS62227316A (en) | 1986-03-31 | 1986-03-31 | Blood sampling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61071280A JPS62227316A (en) | 1986-03-31 | 1986-03-31 | Blood sampling needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62227316A true JPS62227316A (en) | 1987-10-06 |
| JPH0256095B2 JPH0256095B2 (en) | 1990-11-29 |
Family
ID=13456140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61071280A Granted JPS62227316A (en) | 1986-03-31 | 1986-03-31 | Blood sampling needle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62227316A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11169359A (en) * | 1997-10-07 | 1999-06-29 | Sekisui Chem Co Ltd | Vacuum blood drawing needle |
| WO2000076401A1 (en) | 1997-12-19 | 2000-12-21 | Sekisui Chemical Co.,Ltd. | Vacuum sample collecting tube and method of collecting sample under vacuum |
| US7726498B2 (en) | 2003-07-18 | 2010-06-01 | Sekisui Chemical Co., Ltd. | Hermetically sealed container and vacuum test substance-collecting container |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005342100A (en) * | 2004-06-01 | 2005-12-15 | Techno Medica Co Ltd | Blood-collecting holder with blood-collecting needle for vacuum blood-collecting tube |
| EP2327434A4 (en) * | 2008-09-10 | 2014-08-06 | Terumo Corp | Medical device |
-
1986
- 1986-03-31 JP JP61071280A patent/JPS62227316A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11169359A (en) * | 1997-10-07 | 1999-06-29 | Sekisui Chem Co Ltd | Vacuum blood drawing needle |
| WO2000076401A1 (en) | 1997-12-19 | 2000-12-21 | Sekisui Chemical Co.,Ltd. | Vacuum sample collecting tube and method of collecting sample under vacuum |
| US7726498B2 (en) | 2003-07-18 | 2010-06-01 | Sekisui Chemical Co., Ltd. | Hermetically sealed container and vacuum test substance-collecting container |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0256095B2 (en) | 1990-11-29 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |