JP2001061961A - Detention needle - Google Patents
Detention needleInfo
- Publication number
- JP2001061961A JP2001061961A JP24375699A JP24375699A JP2001061961A JP 2001061961 A JP2001061961 A JP 2001061961A JP 24375699 A JP24375699 A JP 24375699A JP 24375699 A JP24375699 A JP 24375699A JP 2001061961 A JP2001061961 A JP 2001061961A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- inner needle
- locking means
- seal cap
- indwelling
- 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
- 239000008280 blood Substances 0.000 claims abstract description 14
- 210000004369 blood Anatomy 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 238000007373 indentation Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 12
- 230000037431 insertion Effects 0.000 abstract description 12
- 238000000502 dialysis Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 210000004204 blood vessel Anatomy 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000001631 haemodialysis Methods 0.000 description 3
- 230000000322 hemodialysis Effects 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 208000030507 AIDS Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000006454 hepatitis Diseases 0.000 description 1
- 231100000283 hepatitis Toxicity 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、輸液、血液透析等
に使用される留置針に関し、より詳しくは、医療従事者
が内針の廃棄時等に誤穿刺により傷ついてしまうのを防
止する安全タイプの留置針に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indwelling needle used for infusion, hemodialysis, and the like, and more particularly, to a safety device for preventing a medical worker from being hurt by puncture when disposing of an inner needle. Type of indwelling needle.
【０００２】[0002]
【従来の技術】近年、医療従事者が血液で汚染された鋭
利な刃先で誤穿刺してしまうことによるエイズ、肝炎ウ
ィルス等への感染の危険性が問題となっている。そこ
で、内針と外針組立体を含んでなる留置針において、内
針を針ガードの内部に収容してそのまま廃棄することに
より、誤穿刺を防止するものが多数出願されている。例
えば、特開平１０−５２４９９号公報には、ボタンを押
すと、ばね付勢手段が作用して、内針が針ガード内部に
引っ込み収容されるという留置針が開示されている。2. Description of the Related Art In recent years, the risk of infection with AIDS, hepatitis virus, and the like due to erroneous puncturing by a medical worker with a sharp blade contaminated with blood has become a problem. Accordingly, many indwelling needles including an inner needle and an outer needle assembly that prevent puncture from being erroneously punctured by accommodating the inner needle inside the needle guard and discarding it as it is have been filed. For example, Japanese Patent Application Laid-Open No. Hei 10-52499 discloses an indwelling needle in which when a button is pressed, a spring urging means acts so that the inner needle is retracted and accommodated inside the needle guard.
【０００３】一方、主に血液透析時に使用される留置針
としては、カテーテル基端のカテーテルハブにクランプ
チューブを介してコネクターが設けられてなる外針組立
体と、基端にエアーフィルターの取り付けられたハブを
有する内針と、コネクターに脱着自在に装着可能であ
り、長手軸上に内針を挿通可能な孔が形成されるととも
に内部にシリコーンゴム膜を収容してなるキャップ（以
下シールキャップという）とからなり、シールキャップ
が内針抜去時の血液の漏出を防ぐものが知られている
（特開平１０−１５１２０３号公報参照）。このものの
使用に際しては、まず、血管に穿刺し、血液のフラッシ
ュバックを内針のハブで確認した後、内針を抜去し、カ
テーテルを血管に留置させる。次に、クランプチューブ
を指、鉗子等で押圧しながら、シールキャップを取り外
す。最後に、外針組立体のコネクターに血液回路を接続
し、テープ等で固定する。このタイプの留置針は内針の
刃先が抜去後にむき出し状態となるので、医療従事者は
誤穿刺の危険にさらされることになる。しかしながら、
現在、このタイプの留置針について誤穿刺対策は施され
ていない。また、このタイプの留置針に前記特開平１０
−５２４９９号の技術を適用しようとすると、全体が長
くなりすぎてしまう。On the other hand, as an indwelling needle mainly used in hemodialysis, an outer needle assembly in which a connector is provided at a catheter hub at a base end of a catheter via a clamp tube, and an air filter is attached to a base end. And a cap which is detachably attachable to the connector, has a hole formed on the longitudinal axis through which the inner needle can be inserted, and contains a silicone rubber film inside (hereinafter referred to as a seal cap). ), And a seal cap is known that prevents leakage of blood when the inner needle is removed (see Japanese Patent Application Laid-Open No. H10-151203). When using this product, first, the blood vessel is punctured, the flashback of blood is confirmed with the hub of the inner needle, the inner needle is removed, and the catheter is left in the blood vessel. Next, the seal cap is removed while pressing the clamp tube with a finger, forceps or the like. Finally, the blood circuit is connected to the connector of the outer needle assembly and fixed with tape or the like. This type of indwelling needle is exposed after the cutting edge of the inner needle is withdrawn, so that the medical staff is at risk of puncturing by mistake. However,
At present, there is no countermeasure against puncture of this type of indwelling needle. Also, this type of indwelling needle is described in
When trying to apply the technique of -52499, the whole becomes too long.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、如上の事情
に鑑みてなされたもので、主として血液透析時に使用さ
れるシールキャップ装着型の留置針において、誤穿刺対
策の施されたコンパクトな留置針を提供することを目的
とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is directed to a compact indwelling needle which is provided with a countermeasure against erroneous puncturing in an indwelling needle with a seal cap used mainly in hemodialysis. The purpose is to provide a needle.
【０００５】[0005]
【課題を解決するための手段】本発明者は上記目的を達
成するために鋭意検討の結果、内針抜去時にシールキャ
ップが内針の刃先をガードするようにすれば、誤穿刺を
防止できることを見出し、本発明に到達した。すなわち
本発明は、ゴム弾性材料からなるクランプチューブを含
んでなる外針組立体と、先端部に係止手段が設けられて
なる内針と、前記外針組立体の基端部に脱着自在に装着
可能であり、長手軸上に前記内針を挿通可能な孔が形成
されるとともに、内部に前記係止手段と係合する係合手
段及び血液の漏出を防止するシール部材が設けられてな
るシールキャップとからなり、該シールキャップが内針
の先端部方向へ相対的に移動したときに、前記係止手段
と前記係合手段が係合するようにされてなる留置針であ
る。ここで、係合手段が、内針が挿通される孔を有する
基部と、該基部に立設されたアーム部とからなり、基部
が基端側になるように配置され、アーム部先端が内針の
係止手段と係合するようにされているのが好ましい。さ
らに、アーム部先端に係合突起が設けられているのが好
ましい。内針が中空針の場合、係止手段は側孔もしくは
環状溝であるのが好ましい。特に係止手段が側孔のとき
には、内針にガイド用の溝またはスリットが設けられ、
シールキャップの係合手段が該溝またはスリットに沿っ
て内針の基端部から係止手段までスライド可能にされて
いるのが好ましい。また、内針が中実のむく針の場合、
係止手段は環状溝もしくは窩であるのが好ましい。特に
係止手段が窩のときには、内針の外表面にガイド用の溝
が設けられ、シールキャップの係合手段が該溝に沿って
内針の基端部から係止手段までスライド可能にされてい
るのが好ましい。The inventor of the present invention has made intensive studies to achieve the above object. As a result, it was found that erroneous puncture can be prevented if the seal cap guards the cutting edge of the inner needle when removing the inner needle. Heading, the present invention has been reached. That is, the present invention provides an outer needle assembly including a clamp tube made of a rubber elastic material, an inner needle having a locking means provided at a distal end thereof, and a detachable and detachable base end of the outer needle assembly. A hole is formed on the longitudinal axis through which the inner needle can be inserted, and an engaging means for engaging with the locking means and a seal member for preventing blood from leaking are provided inside. An indwelling needle comprising a seal cap, wherein the locking means and the engaging means are engaged when the seal cap relatively moves toward the distal end of the inner needle. Here, the engaging means comprises a base having a hole through which the inner needle is inserted, and an arm standing upright on the base, the base is disposed so as to be on the base end side, and the distal end of the arm is provided inside. Preferably, it is adapted to engage with the locking means of the needle. Further, it is preferable that an engagement projection is provided at the tip of the arm portion. When the inner needle is a hollow needle, the locking means is preferably a side hole or an annular groove. Especially when the locking means is a side hole, the inner needle is provided with a guide groove or slit,
Preferably, the engaging means of the seal cap is slidable along the groove or slit from the proximal end of the inner needle to the locking means. Also, if the inner needle is a solid barbed needle,
Preferably, the locking means is an annular groove or fovea. Particularly when the locking means is a fossa, a guide groove is provided on the outer surface of the inner needle, and the engaging means of the seal cap is slidable along the groove from the proximal end of the inner needle to the locking means. Is preferred.
【０００６】[0006]
【発明の実施の形態】本発明の実施例を図面に基づいて
説明する。本発明の留置針は、図１〜図４に示すよう
に、クランプチューブ１３を含んでなる外針組立体１
と、先端部に係止手段（側孔２１１）が設けられてなる
内針２と、内部にシール部材３３および係合部材３４が
設けられたシールキャップ３とからなり、シールキャッ
プ３が内針２の先端部方向へ相対的に移動したときに、
側孔２１１と係合部材３４が係合するようになってい
る。Embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, the indwelling needle of the present invention includes an outer needle assembly 1 including a clamp tube 13.
And an inner needle 2 provided with a locking means (side hole 211) at the distal end, and a seal cap 3 provided with a seal member 33 and an engagement member 34 therein. When relatively moved toward the tip of 2,
The side hole 211 and the engaging member 34 are engaged.
【０００７】外針組立体１は、基端部にカテーテルハブ
１２を有するカテーテル１１と、クランプチューブ１３
と、コネクター１４からなり、コネクター１４はクラン
プチューブ１３を介してカテーテルハブ１２に接続され
ている。カテーテル１１は血管に留置される部分で、ポ
リテトラフルオロエチレン、ポリプロピレン、ポリウレ
タン等の合成樹脂からなる。カテーテルハブ１２は内針
２の抜去時等に手で保持される部分で、ポリプロピレ
ン、ポリエチレン等の合成樹脂からなる。クランプチュ
ーブ１３は、シールキャップ３を取り外して血液回路を
取り付けるまでの間、血液の噴出を防ぐように手や鉗子
等で押圧される部分で、天然ゴム、シリコーンゴム、熱
可塑性エラストマー等のゴム弾性材料からなる。コネク
ター１４はシールキャップ３の装着部となる部分で、カ
テーテルハブ１２と同様の合成樹脂からなる。The outer needle assembly 1 includes a catheter 11 having a catheter hub 12 at a proximal end thereof, and a clamp tube 13.
And a connector 14. The connector 14 is connected to the catheter hub 12 via the clamp tube 13. The catheter 11 is a portion to be placed in a blood vessel, and is made of a synthetic resin such as polytetrafluoroethylene, polypropylene, or polyurethane. The catheter hub 12 is a portion that is held by hand when the inner needle 2 is withdrawn or the like, and is made of a synthetic resin such as polypropylene or polyethylene. The clamp tube 13 is a portion which is pressed by a hand or forceps or the like so as to prevent ejection of blood until the seal cap 3 is removed and a blood circuit is attached, and a rubber elastic material such as natural rubber, silicone rubber, or thermoplastic elastomer is used. Made of material. The connector 14 is a portion to be a mounting portion of the seal cap 3 and is made of the same synthetic resin as the catheter hub 12.
【０００８】内針２は、皮膚を貫き、カテーテル１１を
血管まで導入するためのもので、ステンレス等の金属あ
るいは硬質合成樹脂からなるカヌラ２１と、カヌラ２１
の基端部に設けられた合成樹脂製の内針ハブ２２と、内
針ハブ２２に取り付けられたエアーフィルター２３から
なる。エアーフィルター２３は、気体は通すが血液は通
さない性質を有しており、これにより内針ハブ２２から
血液が漏出することなくフラッシュバックを確認でき、
内針２の血管刺入を知ることができる。カヌラ２１の先
端部刃面側には、係止手段としての側孔２１１が設けら
れるとともに、この側孔２１１から長手方向基端に向か
ってガイド溝２１２が設けられており、内針２抜去時
に、後述するシールキャップ３の係合突起３４２１がガ
イド溝２１２に沿ってスライドし、側孔２１１と係合す
るようになっている。係止手段が側孔２１１の場合、ガ
イド溝２１２がなければ係合突起３４２１と側孔２１１
が係合せずにシールキャップ３が内針２から抜けてしま
う可能性が高いので、ガイド溝２１２やスリット等のガ
イド手段により係合突起３４２１が側孔２１１に向かっ
てガイドされるようにしておくのが好ましい。ここで、
係合突起３４２１と側孔２１１の係合する位置が、カヌ
ラ２１の先端がシールキャップ３の内部に収容される位
置である限り、側孔２１１の設けられる位置について限
定はされない。また、係止手段として環状溝等を採用し
てもよい。係止手段が環状溝の場合、係合突起が３６０
度どの位置にあっても係止手段と係合するようになるの
で、ガイド手段は不要である。尚、内針２として本例で
は中空針について説明しているが、中実のむく針（図示
していない）であってもよい。内針２がむく針の場合、
係止手段として環状溝や窩が設けられるのが好ましく、
さらに係止手段が窩の場合には、この穴から長手方向基
端に向かってガイド溝が設けられるのが好ましい。The inner needle 2 penetrates the skin and introduces the catheter 11 to the blood vessel. The inner needle 2 is made of a metal such as stainless steel or a hard synthetic resin.
An inner needle hub 22 made of synthetic resin is provided at a base end of the inner needle hub 22, and an air filter 23 attached to the inner needle hub 22. The air filter 23 has a property of allowing gas to pass therethrough but not blood, whereby flashback can be confirmed without leaking blood from the inner needle hub 22,
The insertion of a blood vessel into the inner needle 2 can be known. A side hole 211 as locking means is provided on the blade surface side of the distal end portion of the cannula 21, and a guide groove 212 is provided from the side hole 211 toward the base end in the longitudinal direction. An engagement protrusion 3421 of the seal cap 3 described later slides along the guide groove 212 and engages with the side hole 211. When the locking means is the side hole 211, if there is no guide groove 212, the engaging projection 3421 and the side hole 211
There is a high possibility that the seal cap 3 will fall out of the inner needle 2 without engaging with the inner needle 2. Therefore, the engaging protrusion 3421 is guided toward the side hole 211 by a guide means such as the guide groove 212 or the slit. Is preferred. here,
The position where the side hole 211 is provided is not limited as long as the position where the engagement protrusion 3421 and the side hole 211 engage is the position where the tip of the cannula 21 is housed inside the seal cap 3. Further, an annular groove or the like may be employed as the locking means. When the locking means is an annular groove, the engaging projection is 360
The guide means is not necessary because it is engaged with the locking means at any position. Although the hollow needle is described in this example as the inner needle 2, a solid barbed needle (not shown) may be used. When the inner needle 2 is a solid needle,
Preferably, an annular groove or fove is provided as a locking means,
Further, when the locking means is a fossa, a guide groove is preferably provided from this hole toward the base end in the longitudinal direction.
【０００９】シールキャップ３は、図２に示すように、
第１部材３１と、この第１部材３１と嵌合する第２部材
３２、および、内部に設けられたシール部材３３と係合
部材３４からなる。図３、図４に示すように、第１部材
３１は、長手軸上に内針挿通孔３１１１が設けられた雄
テーパー部３１１と、この雄テーパー部３１１の外側に
同心状に設けられ、内壁にねじ山の形成されたロック部
３１２と、シール部材３３および係合部材３４を内部に
固定するために半径方向内方に向け突出した固定部３１
３とからなる。雄テーパー部３１１は前記コネクター１
４に嵌合し、ロック部３１２は前記コネクター１４に螺
合するようになっている。また、固定部３１３は、第２
部材３２と協同して、シール部材３３および係合部材３
４を内部に固定する。第２部材３２には内針挿通孔３２
１が設けられており、内針２はこの内針挿通孔３２１を
挿通し、シール部材３３を貫通して、後述する係合部材
３４の内針挿通孔３４１１および雄テーパー部３１１の
内針挿通孔３１１１を挿通している。シール部材３３
は、内針２抜去時の血液漏出を防ぐためのものであり、
シリコーンゴム、天然ゴム、熱可塑性エラストマー等の
ゴム弾性材料からなる。係合手段としての係合部材３４
は、内針挿通孔３４１１を有する基部３４１と、基部３
４１に立設されたＬ字状のアーム部３４２とからなり、
アーム部３４２の先端には係合突起３４２１が設けられ
ている。図３は、内針２抜去前のシールキャップ３内部
の状態を示しており、係合部材３４は内針２の存在によ
り弾性変形している。この時、係合突起３４２１は内針
２のガイド溝２１２にはまっている。そして、内針２抜
去時にシールキャップ３が移動してカヌラ２１の先端を
収容する位置まで到達すると（この時、係合突起３４２
１はガイド溝２１２に沿って側孔２１１まで案内され
る）、係合突起３４２１は内針２の側孔２１１にはま
り、これと係合する。この時、係合部材３４は、図４に
示すように弾性変形していない元の形状に戻る。尚、一
旦係合突起３４２１と側孔２１１が係合すると、係合部
材３４が破壊されない限り、外れないようになってい
る。The seal cap 3 is, as shown in FIG.
It comprises a first member 31, a second member 32 fitted to the first member 31, and a seal member 33 and an engagement member 34 provided inside. As shown in FIGS. 3 and 4, the first member 31 is provided with a male taper portion 311 having an inner needle insertion hole 3111 provided on a longitudinal axis, and is provided concentrically outside the male taper portion 311, and has an inner wall. And a fixing portion 31 protruding radially inward to fix the seal member 33 and the engagement member 34 therein.
3 The male taper 311 is connected to the connector 1
4 and the lock portion 312 is screwed to the connector 14. In addition, the fixing portion 313 is the second
The sealing member 33 and the engaging member 3 cooperate with the member 32.
4 is fixed inside. The second member 32 has an inner needle insertion hole 32.
The inner needle 2 is inserted through the inner needle insertion hole 321, penetrates the seal member 33, and is inserted through an inner needle insertion hole 3411 of an engagement member 34 and an inner needle insertion of the male tapered portion 311 described later. The hole 3111 is inserted. Seal member 33
Is for preventing blood leakage at the time of removing the inner needle 2,
It is made of rubber elastic materials such as silicone rubber, natural rubber, and thermoplastic elastomer. Engaging member 34 as engaging means
Are a base 341 having an inner needle insertion hole 3411 and a base 3
And an L-shaped arm portion 342 erected at 41,
An engagement protrusion 3421 is provided at a tip of the arm portion 342. FIG. 3 shows a state inside the seal cap 3 before the inner needle 2 is removed, and the engagement member 34 is elastically deformed due to the presence of the inner needle 2. At this time, the engagement protrusion 3421 is fitted in the guide groove 212 of the inner needle 2. Then, when the inner cap 2 is removed, the seal cap 3 moves to reach a position for accommodating the tip of the cannula 21 (at this time, the engagement protrusion 342
1 is guided to the side hole 211 along the guide groove 212), and the engaging projection 3421 is fitted into the side hole 211 of the inner needle 2 and engages with it. At this time, the engagement member 34 returns to its original shape that has not been elastically deformed as shown in FIG. Note that once the engagement protrusion 3421 and the side hole 211 are engaged, the engagement protrusion 3421 does not come off unless the engagement member 34 is broken.
【００１０】このようなシールキャップ３を有する留置
針の製造は、まず、第２部材３２、シール部材３３、係
合部材３４に内針２を挿通させた後、第１部材３１に内
針２を挿通させ第２部材３２と嵌着させることにより、
達成される。To manufacture an indwelling needle having such a seal cap 3, first, the inner needle 2 is inserted through the second member 32, the seal member 33, and the engaging member 34, and then the inner needle 2 is inserted into the first member 31. Is inserted and fitted to the second member 32,
Achieved.
【００１１】尚、本例では、係合手段として内針挿通孔
３４１１を有する基部３４１と基部３４１に立設された
Ｌ字状のアーム部３４２とからなる係合部材３４を採用
したが、このような形状に限定されず、例えばアーム部
が内針側に湾曲した形状であってもよい。また、係止手
段として内針外表面からの段差が大きくなるように設け
られた側孔の場合、係合手段はアーム部先端の肉厚を調
整するのみでもよく、係合突起の代わりに係合溝を設け
てもよい。さらに、係合手段として第１部材もしくは第
２部材の内壁に板ばね等を設けてもよい。In this embodiment, an engaging member 34 is used as an engaging means, which comprises a base 341 having an inner needle insertion hole 3411 and an L-shaped arm 342 erected on the base 341. The shape is not limited to such a shape, and may be, for example, a shape in which the arm portion is curved toward the inner needle. Further, in the case of a side hole provided as a locking means so that a step from the outer surface of the inner needle becomes large, the engaging means may only adjust the thickness of the tip of the arm portion, and may be used instead of the engaging projection. A mating groove may be provided. Further, a leaf spring or the like may be provided on the inner wall of the first member or the second member as the engagement means.
【００１２】本発明の留置針の使用に際しては、図５に
示すように、まず従来の留置針と同様に、血管に穿刺
し、血液のフラッシュバックを内針ハブで確認する。そ
の後、内針を引いて、シールキャップの係合部材が内針
の側孔に係合したのを確認した後、クランプチューブを
手や鉗子等で押圧しながら、シールキャップを取り外
す。最後に、カテーテル組立体のルアーコネクターに血
液回路を接続し、テープ等で固定する。When using the indwelling needle of the present invention, as shown in FIG. 5, first, similarly to a conventional indwelling needle, a blood vessel is punctured, and flashback of blood is confirmed with an inner needle hub. Then, after pulling the inner needle and confirming that the engaging member of the seal cap has engaged with the side hole of the inner needle, the seal cap is removed while pressing the clamp tube with a hand or forceps. Finally, the blood circuit is connected to the luer connector of the catheter assembly and fixed with tape or the like.
【００１３】[0013]
【発明の効果】以上述べたように、本発明により、内針
組立体廃棄時に内針の刃先がシールキャップでガードさ
れるので誤穿刺を防止することができる。また、従来別
々で廃棄されていた内針組立体とシールキャップを一緒
に廃棄できるので、衛生的である。As described above, according to the present invention, when the inner needle assembly is discarded, the cutting edge of the inner needle is guarded by the seal cap, so that erroneous puncture can be prevented. In addition, the inner needle assembly and the seal cap, which have been conventionally discarded separately, can be discarded together, which is sanitary.
【図１】本発明の留置針の平面図である。FIG. 1 is a plan view of an indwelling needle according to the present invention.
【図２】図１に示すシールキャップ３の説明図である。FIG. 2 is an explanatory diagram of a seal cap 3 shown in FIG.
【図３】内針抜去前のシールキャップ３の状態を示す説
明図である。FIG. 3 is an explanatory view showing a state of a seal cap 3 before removing an inner needle.
【図４】内針抜去後のシールキャップ３の状態を示す説
明図である。FIG. 4 is an explanatory view showing a state of the seal cap 3 after removing the inner needle.
【図５】本発明の留置針の使用状態を示す説明図であ
る。FIG. 5 is an explanatory view showing a use state of the indwelling needle of the present invention.
１ 外針組立体 １１ カテーテル １２ カテーテルハブ １３ クランプチューブ １４ コネクター ２ 内針 ２１ カヌラ ２１１ 側孔 ２１２ ガイド溝 ２２ 内針ハブ ２３ エアーフィルター ３ シールキャップ ３１ 第１部材 ３１１ 雄テーパー部 ３１１１ 内針挿通孔 ３１２ ロック部 ３１３ 固定部 ３２ 第２部材 ３２１ 内針挿通孔 ３３ シール部材 ３４ 係合部材 ３４１ 基部 ３４１１ 内針挿通孔 ３４２ アーム部 ３４２１ 係合突起 Reference Signs List 1 outer needle assembly 11 catheter 12 catheter hub 13 clamp tube 14 connector 2 inner needle 21 cannula 211 side hole 212 guide groove 22 inner needle hub 23 air filter 3 seal cap 31 first member 311 male taper portion 3111 inner needle insertion hole 312 Lock part 313 Fixing part 32 Second member 321 Inner needle insertion hole 33 Seal member 34 Engagement member 341 Base 3411 Inner needle insertion hole 342 Arm part 3421 Engagement protrusion
Claims (12)
を含んでなる外針組立体と、先端部に係止手段が設けら
れてなる内針と、前記外針組立体の基端部に脱着自在に
装着可能であり、長手軸上に前記内針を挿通可能な孔が
形成されるとともに、内部に前記係止手段と係合する係
合手段及び血液の漏出を防止するシール部材が設けられ
てなるシールキャップとからなり、該シールキャップが
内針の先端部方向へ相対的に移動したときに、前記係止
手段と前記係合手段が係合するようにされてなる留置
針。1. An outer needle assembly including a clamp tube made of a rubber elastic material, an inner needle having a locking means provided at a distal end thereof, and an outer needle assembly detachably attached to a base end of the outer needle assembly. A hole is formed on the longitudinal axis through which the inner needle can be inserted, and an engaging means for engaging with the locking means and a seal member for preventing blood from leaking are provided inside. An indwelling needle comprising a seal cap, wherein the locking means and the engaging means are engaged when the seal cap relatively moves toward the distal end of the inner needle.
る基部と、該基部に立設されたアーム部とからなり、基
部が基端側になるように配置され、アーム部先端が内針
の係止手段と係合するようにされてなる請求項１記載の
留置針。2. An engaging means comprising a base having a hole through which an inner needle is inserted, and an arm standing upright on the base, wherein the base is disposed on the base end side, and a tip of the arm is provided. 2. The indwelling needle according to claim 1, wherein the indentation needle is adapted to engage with the locking means of the inner needle.
る請求項２記載の留置針。3. The indwelling needle according to claim 2, wherein an engagement projection is provided at a tip of the arm portion.
れかに記載の留置針。4. The indwelling needle according to claim 1, wherein the inner needle is a hollow needle.
ずれかに記載の留置針。5. The indwelling needle according to claim 1, wherein the locking means is a side hole.
いずれかに記載の留置針。6. The indwelling needle according to claim 1, wherein the locking means is an annular groove.
れ、シールキャップの係合手段が該溝に沿って内針の基
端部から係止手段までスライド可能にされてなる請求項
１〜５のいずれかに記載の留置針。7. A guide groove is provided on the outer surface of the inner needle, and the engagement means of the seal cap is slidable along the groove from the base end of the inner needle to the locking means. The indwelling needle according to any one of 1 to 5.
シールキャップの係合手段が該スリットに沿って内針の
基端部から係止手段までスライド可能にされてなる請求
項１〜５のいずれかに記載の留置針。8. A guide slit is provided in the inner needle,
The indwelling needle according to any one of claims 1 to 5, wherein the engagement means of the seal cap is slidable along the slit from the base end of the inner needle to the locking means.
のいずれかに記載の留置針。9. The inner needle is a solid, solid needle.
The indwelling needle according to any one of the above.
の留置針。10. The indwelling needle according to claim 9, wherein the locking means is an annular groove.
置針。11. The indwelling needle according to claim 9, wherein the locking means is a fossa.
れ、シールキャップの係合手段が該溝に沿って内針の基
端部から係止手段までスライド可能にされてなる請求項
９または１１記載の留置針。12. A guide groove is provided on the outer surface of the inner needle, and the engaging means of the seal cap is slidable along the groove from the base end of the inner needle to the locking means. 12. The indwelling needle according to 9 or 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24375699A JP4016411B2 (en) | 1999-08-30 | 1999-08-30 | Indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24375699A JP4016411B2 (en) | 1999-08-30 | 1999-08-30 | Indwelling needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001061961A true JP2001061961A (en) | 2001-03-13 |
| JP4016411B2 JP4016411B2 (en) | 2007-12-05 |
Family
ID=17108528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24375699A Expired - Fee Related JP4016411B2 (en) | 1999-08-30 | 1999-08-30 | Indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4016411B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003026731A1 (en) * | 2001-09-20 | 2003-04-03 | Kabushiki Kaisha Top | Self-retaining needle |
| CN115445053A (en) * | 2022-08-22 | 2022-12-09 | 北京昭衍新药研究中心股份有限公司 | Animal subcutaneous tunnel establishment device |
-
1999
- 1999-08-30 JP JP24375699A patent/JP4016411B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003026731A1 (en) * | 2001-09-20 | 2003-04-03 | Kabushiki Kaisha Top | Self-retaining needle |
| CN115445053A (en) * | 2022-08-22 | 2022-12-09 | 北京昭衍新药研究中心股份有限公司 | Animal subcutaneous tunnel establishment device |
| CN115445053B (en) * | 2022-08-22 | 2024-05-28 | 北京昭衍新药研究中心股份有限公司 | Animal subcutaneous tunnel establishment device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4016411B2 (en) | 2007-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0510187B1 (en) | Catheter assembly having safety means and method for using same | |
| JP4355567B2 (en) | Safety needle with foldable sheath | |
| US7291130B2 (en) | Safety needle and catheter assembly | |
| US6162197A (en) | Retractable needle assembly and method of making the same | |
| EP0830869B1 (en) | Needle assembly having single-handedly activated needle barrier | |
| EP1974765B1 (en) | Indwelling needle assembly and protector | |
| US5797880A (en) | Catheter and placement needle assembly with retractable needle | |
| US5498244A (en) | Safety guard for medical instruments | |
| US20030060769A1 (en) | Catheter introducer assembly having safety shielded needle | |
| US6475191B2 (en) | Indwelling needle assembly | |
| JPH10155912A (en) | Operation control lock mechanism for safe catheter and application method therefor | |
| WO2006123645A1 (en) | Wing-like needle assembly | |
| JP2002345955A (en) | Injection needle with safety cap | |
| JP4378012B2 (en) | Puncture tool | |
| JPH0724071A (en) | Blood vessel indwelling catheter | |
| WO2004014457A2 (en) | Needle protector | |
| NZ542584A (en) | Safety needle and catheter assembly with bent tip area of needle | |
| US6117110A (en) | Catheter needle safety device and method of using same | |
| US6855127B2 (en) | Needle assembly | |
| JP4648615B2 (en) | Medical needle device with a winged shield | |
| JP2001252356A (en) | Injection needle apparatus with wings | |
| JP3576765B2 (en) | Indwelling needle assembly | |
| JP2001061961A (en) | Detention needle | |
| JP4844259B2 (en) | Method for manufacturing a needle assembly | |
| JP2003116996A (en) | Needle cover and needle cover with cap and winged needle with needle cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20061225 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070222 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20070326 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20070525 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070827 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070909 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100928 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130928 Year of fee payment: 6 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |