JP2003199822A - Indwelling needle with infectious disease preventing function and needle thrust accident preventing function - Google Patents

Indwelling needle with infectious disease preventing function and needle thrust accident preventing function

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Publication number
JP2003199822A
JP2003199822A JP2002002995A JP2002002995A JP2003199822A JP 2003199822 A JP2003199822 A JP 2003199822A JP 2002002995 A JP2002002995 A JP 2002002995A JP 2002002995 A JP2002002995 A JP 2002002995A JP 2003199822 A JP2003199822 A JP 2003199822A
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needle
portion
body
protector
outer
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JP2002002995A
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Japanese (ja)
Inventor
Shigeaki Funamura
Atsushi Oigawa
淳 大井川
重彰 船村
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Nippon Sherwood Medical Industries Ltd
日本シャーウッド株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an indwelling needle capable of being operated in the same way as a conventional technique, having no feeling of physical discorder during use and capable of preventing an infectious disease. <P>SOLUTION: An inner needle 11 having a stepped needle body 13 of which the leading end has a large diameter is attached to the outer needle 1 through a plug 5 with a hub for preventing an infectious disease hermetically closing the rear end of the outer needle 1 and a protector 15 having length capable of covering the large diameter part 16 provided to the leading end of the needle body 13 is attached to the small diameter shaft part 17 of the needle body 13 between the needle base 14 of the inner needle 11 and the plug 5 in a freely slidable manner and a protector shielding means 23, which locks the protector 15 with a plug hub 8 and unlocks the protector 15 and the plug hub 8 when the large diameter part 16 provided to the leading end of the needle body 13 is housed in the lumen 21 of the protector 15 by pulling the inner needle 11 out of the outer needle 1 to shield the front of the needle body 13 in the lumen 21 of the protector 15, is provided to the protector 15 and the needle thrust accident to a person concerned or a worker for treating medical waste is prevented to prevent the infectious disease. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、例えば透析用の留置針に好適な感染症防止機能および針刺し事故防止機能を備えた留置針に関するものである。 BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention is, for example, relates to an indwelling needle with a suitable infection prevention and needle stick accidents prevention function indwelling needle for dialysis. 【0002】 【従来の技術】従来より、感染性の病気を患う患者に使用した針による医療関係者の不慮の針刺し事故による感染の危険性が指摘され、医療関係者を保護するために多くの解決策がこれまでに提案されている。 2. Description of the Prior Art Conventionally, the risk of infection due to accidental needle stick accident of medical personnel has been pointed out by a needle that was used to patients suffering from infectious disease, many in order to protect the medical personnel solutions have been proposed so far. 【0003】例えば、特公平6−6161号公報(以下、第1従来例という)には、針の軸部に針先端部を覆うことのできるカバーを摺動可能に嵌合させるとともに、針を先端部外径が大の段軸状に形成し、その段部とカバーの針支承部とを係合可能とし、カバーそのものはカテーテルハブに対してテーパ嵌合可能に設けたものが開示されている。 For example, Kokoku 6-6161 Patent Publication (hereinafter referred to as a first conventional example), the cover which can be the shaft of the needle to cover the needle tip causes slidably fitted, the needle tip outer diameter is formed larger stage shaft-like, and a needle bearing portion of the stepped portion and the cover and engageable cover itself is disclosed that is provided so as to be tapered fit relative to the catheter hub there. 【0004】また、特開2001−212242(以下、第2従来例という)には、内針の先端を保護する先端部保護装置をカテーテルハブに対してテーパ嵌合可能に設け、先端部保護装置の金属クリップ部の狭隘な内腔に、その内腔壁の一部を切り起こしてなるタブを設け、 Further, JP 2001-212242 (hereinafter, referred to as a second conventional example), the provided to be tapered fit the tip protective device for protecting the tip of the inner needle relative to the catheter hub, tip protector the narrow lumen of the metal clip portion, provided with a tab formed by cutting and raising a portion of the lumen wall,
このタブは、使用時には金属クリップの内腔を貫通する内針にて押圧させ、カテーテルより内針を引き抜く際には、内針先端がタブ部を通過すると、タブが内針より解放されて起きあがり、金属クリップ部の内腔を遮蔽し、 This tab is in use is pressed by inner needle penetrating the lumen of the metal clip, when withdrawing the inner needle from the catheter, the inner needle tip passes the tab portion, is released from the inner needle tab arose , to shield the lumen of the metal clip portion,
これによって先端部保護装置内で内針が先端方向へ移動するのを阻止するとともに、先端部保護装置内での内針の後端方向へのさらなる移動を、内針の軸部に形成した変形部分を金属クリップ側と係合させることで阻止するようにしたものが開示されている。 Deformation whereby the inner needle within the tip protector while prevented from moving in the distal direction, the further movement of the rear end direction of the inner needle within the tip protector, formed in the shaft portion of the inner needle that the moiety so as to prevent by engaging with the metal clip side is disclosed. 【0005】また、特開2001−252355(以下、第3従来例という)には、内針が挿通可能な針体通路を有するプロテクタをカテーテルハブに対してテーパ嵌合可能に設け、かつプロテクタの狭隘な内腔壁には凹部を形成し、この凹部内に針体通路に臨ませて弾性部材を収納し、内針の針先が凹部付近を基端方向へ通過すると、弾性部材の可動端を針体通路内に進入させて針先の先方向への通過を阻止するとともに、プロテクタ内での内針の基端方向へのさらなる移動を、内針に設けた形状変位部分をプロテクタと係合させることで阻止するようにしたものが開示されている。 Further, JP 2001-252355 (hereinafter, referred to as a third conventional example), the inner needle is provided to be tapered fitting a protector having a can be inserted needle body passageway relative to the catheter hub, and the protector forming a recess in the narrow lumen wall, an elastic member accommodated so as to face the needle body passageway to the recess, the needle tip of the inner needle passes near the recess proximally, movable end of the elastic member was allowed to enter the needle body passage while blocking the passage of the needle tip of the previous direction, further moves, engagement with the protector shape displacement portion which is provided on the inner needle into the inner needle proximally within the protector those so as to prevent by engaged is disclosed. 【0006】また、特開平9−108348号公報(以下、第4従来例という)には、内針の先端を保護するガード内に、一部が外方に突出可能なラッチを設け、使用時にガードの内腔を貫通する内針にてラッチを押圧させることでラッチをアップ位置に保持させてその一部を外方に突出させ、このラッチの突出部とカテーテルハブ側の突起とを係合させ、カテーテルより内針を引き抜く際には、内針先端がラッチ部を通過すると、ラッチが内針より解放されて下降し、ガードの内腔を遮蔽し、これによってガード内で内針が先端方向へ移動するのを阻止すると同時にラッチの突出部とカテーテルハブ側の突起との係合が解除され、またガード内での内針の後端方向へのさらなる移動は、内針の先端軸部に形成した大径部の段部をガードと係 Further, JP-A-9-108348 discloses (hereinafter, referred to as a fourth conventional example), the inside guard to protect the tip of the inner needle, partially provided extendable latch outward, in use and needle latch by causing pressing is held in the up position the latch at inner through the lumen of the guard protruding a part outward, engaging the projections of the projection and the catheter hub side of the latch is allowed, when withdrawing the inner needle from the catheter, the inner needle tip passes the latching section, is lowered released from the inner needle latch, to shield the lumen of the guard, whereby the inner needle tip within the guard When prevented from moving in a direction to cancel the engagement simultaneously with the protrusion of the latch and the catheter hub side protrusion and further movement of the rear end direction of the inner needle within the guard, the inner needle tip shaft portion guard and engaging the step portion of the large-diameter portion formed in the させることで阻止するようにしたものが開示されている。 Those so as to prevent by causing is disclosed. 【0007】また、特開平9−327517号公報(以下、第5従来例という)には、内針を保護するハウジングの前端部に、カテーテルハブのフランジとの係合用フックを有するボタン部材を相対移動自在に設け、使用時にはボタン部材の内腔を貫通する内針にてボタン部材をカテーテルとの係合位置に保持し、カテーテルより内針を引き抜く際には、内針先端がボタン部材部分を通過してハウジング内に収容されると、ボタン部材が内針より解放されてハウジングに対し非係合位置へ移動するとともに、ハウジングの内腔を遮蔽し、これによってハウジング内より内針が先端方向へ突出するのを阻止するようにしたものが開示されている。 Further, JP-A-9-327517 discloses (hereinafter, referred to as the fifth conventional example), the the front end portion of the housing to protect the inner needle relative to the button member having an engagement hook of the flange of the catheter hub provided movably, the button member held in the engaged position the catheter at inner needle penetrating the lumen of the button member is in use, when withdrawing the inner needle from the catheter, the inner needle tip the button member portion When accommodated in the housing through, as well as moves by being released from the inner needle button member to the disengaged position relative to the housing to shield the lumen of the housing, which inner needle from the housing by the distal direction those so as to prevent the projecting is disclosed. 【0008】 【発明が解決しようとする課題】しかしながら、前述の各従来例には以下のような問題が存在している。 [0008] The present invention is, however, in the conventional examples described above are present the following problems. すなわち、第1従来例の場合、針がカバー前方へ移動するのを規制する手段がなく、安全性に問題がある。 That is, in the case of the first conventional example, there is no means for restricting the needle to move to cover the front, there is a problem in safety. 【0009】また、第2従来例の場合、内針が貫通する金属クリップ部の狭隘な内腔の壁の一部を切り起こしてタブを形成するようにしているため、製作が難しいだけでなく、タブの肉厚を厚くできず、シール効果に疑問が残る。 Further, in the case of the second conventional example, since the inner needle so that to form a tab cut and raised part of the wall of the narrow lumen of the metal clip extending through not only manufacture difficult , can not increase the thickness of the tab, questions remain on the sealing effect. 【0010】また、前述の第3従来例の場合、内針が貫通するプロテクタの狭隘な内腔壁に凹部を形成して、この凹部内に内腔側より弾性部材を設置するようにしているだけでなく、内針との組付時に前記弾性部材を押圧した状態で内針を貫通させなければならないため、製作がきわめて難しい。 [0010] Also, as in the third prior art example described above, by forming a concave portion on narrow lumen wall of the protector which the inner needle penetrates, placing the elastic member from the bore side into this recess not only because that must penetrate the inner needle in a state of pressing the elastic member when assembling the inner needle, manufacture is very difficult. また弾性部材がばねから構成されているため、プロテクタ前方の安全性にも問題がある。 Since the elastic member is a spring, there is a problem in the safety of the protector front. 【0011】さらに、前記第1乃至第3従来例においては、いずれも内針先端部の保護手段をカテーテルハブ内にテーパ嵌合させる方式を採用しているため、内針先端部の保護手段を、内針引き抜き時にカテーテルハブ部から動かないように固定する操作や保護手段内への内針収納後に保護手段をカテーテルハブから取り外す操作、すなわちこれまでの手技とは異なる新たな操作が必要となり、使用感が異なるという問題もある。 Furthermore, in the above first to third prior art example, since the protection of both the inner needle tip employs a system to fit taper in the catheter hub, the protection means of the inner needle tip the operation of removing the protective means after the inner needle housed in the inner needle retraction during the operation or protection means for immovably fixed from the catheter hub unit from the catheter hub, i.e. a new operation is required to differ from the previous procedure, there is also a problem that a feeling of use is different. 【0012】また、前述の第1乃至第5従来例のいずれも針刺し事故防止あるいは感染症防止についての対策は万全ではなかった。 Further, the measures for both needlestick accident prevention or infection prevention of the first to fifth conventional examples described above were not foolproof. 【0013】本発明の技術的課題は、これまでの手技と同様の操作でよく、使用感に違和感がなく、かつ感染症を防止できるようにすることにある。 [0013] The technical problem of the present invention, previous procedures and may the same operation is to make it no discomfort feeling, and the infection can be prevented. 【0014】 【課題を解決するための手段】本発明の請求項1に係る感染症防止機能および針刺し事故防止機能付き留置針は、カテーテルハブにカテーテルを取り付けてなる外針と、外針のカテーテルハブに取り付けられてカテーテルハブの後端を密閉する感染症防止用のハブ付きプラグと、プラグを通して外針の内腔を貫通する先端が大径の段付き針体および針体の後端を固定した針基からなる内針と、針体の先端大径部を覆うことのできる長さを有し、内針の針基とプラグとの間に配置され、針体の小径軸部に摺動自在に嵌合設置された保護具と、保護具に装着され、穿刺時に保護具をプラグハブに係止させ、外針からの内針抜去により針体先端大径部が保護具内腔に収容された時に保護具とプラグハブとの係合を解くとともに、保護具 [0014] Means for Solving the Problems] infections prevention and needle stick accident prevention function indwelling needle according to claim 1 of the present invention, an outer needle made by attaching the catheter to the catheter hub, the outer needle catheter fixing a hub with plug for preventing infections sealing the rear end of the catheter hub attached to the hub, the rear end of the lumen penetrating tip is stepped needle having a large diameter and the needle body of the outer needle through the plug was an inner needle made of needle groups have a length capable of covering the front end large-diameter portion of the needle body, it is arranged between the needle base and the plug of the inner needle, sliding the small diameter portion of the needle body and fitting the installed protective equipment freely, mounted on protective equipment, the protective equipment when the puncture to engage with the Puraguhabu, needle body distal large diameter portion is housed protection lumen by an inner needle removed from the outer needle together to disengage the protection and Puraguhabu when the, protective equipment 内腔の針体前方を遮蔽する保護具遮蔽手段と、を備えたものである。 A protection shield means for shielding the needle body in front of the lumen, but with the. 【0015】また、請求項1の保護具遮蔽手段を、請求項2のように保護具本体の先端部に外周面から軸線交差方向に形成されて、その針体が挿通される内腔をエリア内に納める凹部または貫通孔と、保護具本体の針体が挿通される内腔を遮蔽可能な大きさの頭部を有し、保護具本体の凹部または貫通孔内に挿入されて設置されたポペット状のストッパ部材と、ポペット状ストッパ部材の茎部の案内機能を有し、茎部の先端が外方に突出可能に前記凹部または貫通孔の開口部に設けたばね座と、ばね座とストッパ部材の頭部との間に配設されて、ストッパ部材を常時内腔閉塞方向に付勢する付勢手段と、ストッパ部材の茎部の突出部が嵌入可能にプラグハブに形成された係止部と、から構成したものである。 Further, a protection shield means according to claim 1, formed from the outer peripheral surface at the tip portion of the protector body as claimed in claim 2 in the axial cross-direction, the area of ​​the lumen in which the needle body is inserted a recess or through hole fit within the needle body protector body has a shieldable size of the head of the lumen is inserted, is installed is inserted into the recess or the through hole of the protector body has a poppet-shaped stopper member, the guiding function of the stem of the poppet-like stopper member, and a spring seat the tip of the stem portion is provided in the opening portion of the can project the recess or the through-hole outward, the spring seat and a stopper is disposed between the head of the member, and biasing means for biasing the stopper member constantly lumen occlusion direction, locking portion projecting portions of the stem portion of the stopper member is formed on Puraguhabu possible fit and, which is constituted from. 【0016】また、請求項2のプラグハブの先端部に、 Further, the tip portion of Puraguhabu of claim 2,
請求項3のようにカテーテルハブに設けた雄ねじと螺合可能な雌ねじを形成するとともに、プラグハブの後端部に、保護具本体の先端部を収容可能な保護具収容部を設け、この保護具収容部に、ストッパ部材突出部との係止部を形成したものである。 To form a male thread and can be screwed an internal thread provided in the catheter hub as claimed in claim 3, the rear end portion of the Puraguhabu, a protection housing portion capable of housing provided tip portion of the protector body, the protection the housing portion, and forming the engagement portion of the stopper member projecting portion. 【0017】また、請求項3の内針の針基の先端に、請求項4のように保護具本体の後端部を収容可能なハブを設けたものである。 Further, the tip of the needle base of the inner needle of claim 3, is provided with a housing capable of hub rear end portion of the protector body as claimed in claim 4. 【0018】本発明の請求項5に係る感染症防止機能および針刺し事故防止機能付き留置針は、カテーテルハブにカテーテルを取り付けてなる外針と、外針のカテーテルハブに取り付けられてカテーテルハブの後端を密閉する感染症防止用のハブ付きプラグと、プラグを通して外針の内腔を貫通する基本的にストレート状の針体および該針体の後端を固定した針基からなる内針と、針体の先端部を所定長さ覆うことのできる長さを有し、内針の針基とプラグとの間に配置され、針体の軸部に摺動自在に嵌合設置された保護具と、保護具に装着され、穿刺時に保護具をプラグハブに係止させ、外針からの内針抜去により針体先端部が保護具内腔に収容された時に保護具とプラグハブとの係合を解くとともに、保護具内の針体をラッチして針体に [0018] Infections prevention and needle stick accident prevention function indwelling needle according to claim 5 of the present invention, an outer needle made by attaching the catheter to the catheter hub after the catheter hub attached to the outer needle of the catheter hub a hub with plug for infection prevention for sealing the ends, and an inner needle made of needle groups rear were fixed basically straight needle body and needle member passing through the lumen of the outer needle through the plug, the tip of the needle body has a length capable of covering a predetermined length, is arranged between the needle base and the plug of the inner needle, slidably fitted the installed protection on the shaft of the needle body when, is mounted on the protector, the protector when puncturing is engaged in Puraguhabu, the engagement between the protector and the Puraguhabu when the needle body distal portion is housed protection lumen by an inner needle removed from the outer needle with solving the needle body in the protective equipment to latch the needle body する保護具の位置を固定する保護具固定手段と、を備えたものである。 And protection fixing means for fixing the position of the protection system, in which with a. 【0019】また、請求項5の保護具固定手段を、請求項6のように針体の先端部外周に形成した所定幅のリング状溝と、一端側がリング状溝にのみ嵌入可能なスリットを有する幅広部、他端側がこの幅広部の中央部から延出する幅狭片に形成され、保護具本体に設けた孔内に挿入されて幅広部のスリットの開口を針体の軸部に跨らせた状態で、かつ幅狭片の先端が保護具本体の孔より外方に突出可能に設置されたプレートからなるラッチ部材と、保護具本体の孔の開口部に設けたばね座とラッチ部材の幅広部との間に配設されて、ラッチ部材を常時針体ラッチ方向に付勢する付勢手段と、ラッチ部材の幅狭片の突出部が嵌入可能にプラグハブに形成された係止部と、から構成したものである。 Further, the protection fixing means according to claim 5, a ring-shaped groove of a predetermined width formed on the tip end outer periphery of the needle body as claimed in claim 6, one end of which can be slit fitted only in a ring-shaped groove wide portion having the other end side is formed narrower strips extending from the central portion of the wide portion, protectors are inserted into provided within holes in the body extending over the opening of the wide portion of the slit the shaft of the needle body in state al allowed, and the width and the latch member front end of the narrow piece consists can project the installed plate outward from the hole of the protector body, a spring seat and a latch member provided in the opening of the protector body bore is disposed between the wide portion of the biasing means for biasing the latch member to always needle body latch direction, locking portion projecting portions of the narrow strip of the latch member is formed on Puraguhabu possible fit and, which is constituted from. 【0020】また、請求項7のように保護具本体を二重筒から構成し、その内筒の後端部には、その針体が挿通される内腔をエリア内に納める軸線交差方向の貫通孔を形成するとともに、その外筒の前記貫通孔に対応する位置には、この貫通孔よりも軸線方向の空間幅を大きく設定されてこの貫通孔に連通する凹部をその外周面から軸線交差方向に形成し、ラッチ部材を、外筒の凹部および内筒の貫通孔内に挿入して、その幅狭片の先端が外筒凹部の前記ばね座となる底部に設けた孔より外方に突出可能に設置したものである。 Further, the protection body constitutes a double cylinder as claimed in claim 7, the rear end of the inner cylinder, the axial cross-direction to pay lumen its needle body is inserted into the area to form a through hole, that in the through-holes at corresponding positions of the outer cylinder, the through-hole is set larger space width in the axial direction of the axis intersecting the recess communicating with the through-hole from the outer peripheral surface was formed in a direction, the latch member is inserted into the through hole of the recess and the inner cylinder of the outer cylinder, outward from the hole provided in the bottom tip of the narrow strips is the spring seat of the outer cylinder recess in which installed can project. 【0021】また、請求項6又は請求項7のプラグハブの先端部に、請求項8のようにカテーテルハブに設けた雄ねじと螺合可能な雌ねじを形成するとともに、プラグハブの後端部に、保護具本体をほぼ収容可能な保護具収容部を設け、この保護具収容部に、ラッチ部材突出部との係止部を形成したものである。 Further, the tip portion of Puraguhabu of claim 6 or 7, thereby forming a male screw and can be screwed an internal thread provided in the catheter hub as claimed in claim 8, the rear end portion of the Puraguhabu, protection provided almost can accommodate protector housing section an ingredient body, this protection housing portion, and forming an engagement portion of the latch member projection. 【0022】また、請求項5乃至請求項8において、請求項9のように針体先端部のリング状溝の深さを、針体肉厚の10〜70%に設定したものである。 Further, in claims 5 to 8, in which the depth of the ring-shaped groove of the needle body tip as claimed in claim 9, was set to 10% to 70% of the needle body thickness. 【0023】本発明の請求項10に係る感染症防止機能および針刺し事故防止機能付き留置針は、カテーテルハブにカテーテルを取り付けてなる外針と、外針のカテーテルハブに取り付けられてカテーテルハブの後端を密閉する感染症防止用のハブ付きプラグと、先端が大径軸部、後端側がこの大径軸部の断面エリア内に形成される異形軸部に設けられて前記プラグを通して外針の内腔を貫通する針体およびこの針体の後端を固定した針基からなる内針と、針体の先端大径部を覆うことのできる長さを有し、内針の針基とプラグとの間に配置され、針体の異形軸部にスプライン係合して嵌合設置された保護具と、保護具に装着され、穿刺時に保護具をプラグハブに係止させ、外針からの内針抜去により針体先端大径部が保護具内腔に収容され [0023] Infections prevention and needle stick accident prevention function indwelling needle according to claim 10 of the present invention, an outer needle made by attaching the catheter to the catheter hub after the catheter hub attached to the outer needle of the catheter hub a hub with plug for infection prevention for sealing the end tip large diameter shaft portion, the rear end side of the outer needle through the plug provided on the profiled shaft portion formed in a cross-sectional area of ​​the large diameter shaft portion has an inner needle comprising a lumen from the needle groups rear has a fixed needle body and the needle body therethrough, a length capable of covering the front end large-diameter portion of the needle body, the inner needle needle hub and plug disposed between a fitting installed protective equipment spline engaged to the profile axis of the needle body, is mounted on the protector, engagement was locked in Puraguhabu protective equipment during puncturing, of the outer needle needles tip large diameter portion is housed protection lumen by the needle removed 時に保護具とプラグハブとの係合を解くとともに、保護具内の針体と係合して針体に対する保護具の軸方向位置を固定する保護具固定手段と、 Sometimes with disengage the protection and Puraguhabu, the protection fixing means engaged with the needle body in the protector to fix the axial position of the guard relative to the needle body,
を備えたものである。 It is those with a. 【0024】また、請求項10の保護具固定手段を、請求項11のように針体の先端部外周に形成した穴と、保護具本体の先端部に外周面から軸線交差方向に形成されて、針体が挿通される内腔をエリア内に納める凹部または貫通孔と、ガイド機能およびばね座機能をもつフランジを有し、一端部が前記穴に嵌入可能に保護具本体の凹部または貫通孔内に挿入された棒状部材と、棒状部材の他端部の案内機能を有し、この他端部の先端が外方に突出可能に前記凹部または貫通孔の開口部に設けたばね座と、このばね座と棒状部材のフランジの間に配設されて、棒状部材を常時穴嵌入方向に付勢する付勢手段と、 Further, the protection fixing means according to claim 10, is formed in the axial cross-direction from the outer peripheral surface in the hole formed in the distal end outer periphery of the needle body, the distal end of the protector body as claimed in claim 11 a recess or through-hole pay lumen area the needle body is inserted, the guide function and having a flange with a spring seat feature, the recess or through hole of one end fitted capable protector body into the hole and the rod member inserted within, has a guide function of the other end of the rod, a spring seat the tip of the other end portion is provided in the opening portion of the can project the recess or the through-hole outward, this is disposed between the flange of the spring seat and the rod-shaped member, and biasing means for biasing the rod-like member to always hole insertion direction,
棒状部材他端部の突出部が嵌入可能にプラグハブに形成された係止部と、から構成したものである。 A locking portion projecting portions of the rod member other end portion is formed on Puraguhabu possible fitted, which is constituted from. 【0025】また、請求項11のプラグハブの先端部に、請求項12のようにカテーテルハブに設けた雄ねじと螺合可能な雌ねじが形成するとともに、プラグハブの後端部に、保護具本体の先端部を収容可能な保護具収容部が設けられ、保護具収容部に、棒状部材突出部との係止部を形成したものである。 Further, the tip portion of Puraguhabu of claim 11, together with the male screw and can be screwed an internal thread provided to form the catheter hub as claimed in claim 12, the rear end portion of the Puraguhabu, the tip of the protector body part protector housing portion capable of housing, there are provided as the protector housing section is obtained by forming the engagement portion of the rod member projecting portion. 【0026】 【発明の実施の形態】実施形態1. [0026] DETAILED DESCRIPTION OF THE INVENTION Embodiment 1. 図1は本発明の第1 Figure 1 is a first invention
の実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用前の状態を示す断面図、図2は図1の状態の外針と内針を分離して示す断面図、図3は使用後に外針から内針を抜去する時の状態を示す断面図、 Cross-sectional view showing a state before use of the infection prevention and needle stick accident prevention function indwelling needle according to the embodiment of FIG. 2 is a sectional view showing in isolation the outer needle and the inner needle in the state of FIG. 1, FIG. 3 sectional view showing a state in which pulling the inner needle out of the outer needle after use,
図4は外針から内針を抜去した後の針体先端部が保護されている状態の内針を示す断面図、図5はストッパ部材による保護具内腔遮蔽前(a)と遮蔽後(b)の状態を示す保護具遮蔽手段部の断面図、図6は内針抜去時の動作の説明図である。 Figure 4 is a sectional view showing an inner needle in a state where the needle body tip after pulling the inner needle out of the outer needle is protected, Figure 5 is front protection lumen blocking by the stopper member (a) and after blocking ( sectional view of the protector shield means unit indicating the state of b), FIG. 6 is an explanatory view of the operation when the inner needle removed. 【0027】各図において、1はカテーテルハブ2にクランピングチューブ3を介してカテーテル4を取り付けてなる外針、5は外針1のカテーテルハブ2に取り付けられてカテーテルハブすなわち外針1の後端を密閉する感染症防止用のハブ付きプラグであって、その先端部にはカテーテルハブ2に設けた雄ねじ6と螺合可能な雌ねじ7が形成されているとともに、その後端部には、後述の保護具本体の先端部を収容可能な保護具収容部すなわちプラグハブ8が設けられていて、このプラグハブ8 [0027] In the figures, 1 is an outer needle made by attaching the catheter 4 through the clamping tube 3 to the catheter hub 2, 5 after the catheter hub, outer needle 1 is attached to the catheter hub 2 of the outer needle 1 a hub with plug for infection prevention for sealing the ends, together with the male screw 6 and can be screwed internally threaded 7 provided in the catheter hub 2 at its front end portion is formed, on its rear end, later protection body of the distal end portion capable of accommodating the protective equipment accommodating portion, that Puraguhabu 8 is provided, this Puraguhabu 8
に、後述のストッパ部材突出部との係止部すなわち係止孔9が形成されている。 The locking portion i.e. the locking hole 9 of the stopper member projecting portion described later are formed. 【0028】11は外針1に組付けられた内針であって、プラグ5内のゴム製封止部材(以下、セプタムという)12を通して外針1の内腔を貫通する先端が大径の段付き針体13と、針体13の後端を固定した針基14 [0028] 11 is a needle inside which is assembled to the outer needle 1, a rubber sealing member in the plug 5 (hereinafter, referred to as a septum) 12 through the tip to penetrate the lumen of the outer needle 1 has a larger diameter a stepped needle body 13 was fixed to the rear end of the needle body 13 the hub 14
とから構成されている。 It is composed of a. 【0029】15は針体13の先端大径部16を覆うことのできる長さを有し、内針11の針基14とプラグ5 [0029] 15 has a length capable of covering the front end large-diameter portion 16 of the needle body 13, hub 14 and plug 5 of the inner needle 11
との間に配置され、針体13の小径軸部17に摺動自在に嵌合設置された保護具であって、その後端の開口18 It is arranged between the, a slidably fitted the installed protection to the small-diameter shaft portion 17 of the needle body 13, the opening of the rear end 18
は針体13の小径軸部17の通過を許容し、針体13の先端大径部16の通過は阻止する大きさに設定されている。 Will permit the passage of the small diameter shaft portion 17 of the needle body 13, the passage of the leading end large diameter portion 16 of the needle body 13 is set to a size which prevents. また保護具本体の先端部にはプラグハブ8内に収容可能な膨出部19が設けられ、膨出部19には、図5のように針体13が挿通される内腔21をエリア内に納める凹部22がその外周面から軸線交差方向に形成されていて、凹部22内に保護具遮蔽手段23が設置されている。 Also the distal end of the protector body capable of accommodating the bulging portion 19 is provided in Puraguhabu within 8, the bulging portion 19, a lumen 21 in the area where the needle body 13 is inserted as shown in FIG. 5 recess 22 to pay is being formed in the axial cross-direction from the outer peripheral surface, protection shielding means 23 is disposed in the recess 22. なお、針体13の小径軸部17と先端大径部16間の段差はテーパ状に形成されており、その段差部の軸方向の長さをA、大径部と小径軸部の径差をBとしたとき、A≦Bとなるように設定されている。 Incidentally, the step between the small-diameter shaft portion 17 and the distal end large diameter portion 16 of the needle body 13 is formed in a tapered shape, the diameter difference of the axial length of the stepped portion A, the large diameter portion and a small-diameter shaft portion when was the B, and is set to be a ≦ B. 【0030】保護具遮蔽手段23は、図5のように保護具本体の針体13が挿通される内腔21を遮蔽可能な大きさの頭部24を有し、ここでは保護具本体の凹部22 The protection shield means 23 has a protector needle body 13 head 24 of a size that can shield the lumen 21 which is inserted in the main body as shown in FIG. 5, the recess of the protection body here 22
の底部25からその凹部22の開口部26までの長さ以下になるように設定され、頭部24より凹部22内に挿入されて設置された角形ポペット状のストッパ部材27 The bottom 25 thereof to the opening 26 of the recess 22 is set to be less than the length from, shaped rectangular installed is inserted into recess 22 from the head 24 the poppet stop member 27
と、この角形ポペット状のストッパ部材27の茎部28 If, stem 28 of this prismatic poppet-like stopper member 27
を案内するガイド用孔29を有し、茎部28の先端31 It has a guide hole 29 for guiding the tip 31 of stem 28
が外方に突出可能に凹部22の開口部26を閉塞するばね座機能をもつ蓋部材32と、このばね座となる蓋部材32とストッパ部材27の頭部24との間に配設されて、ストッパ部材27を常時内腔閉塞方向に付勢する付勢手段すなわち圧縮ばね33と、ストッパ部材27の茎部28の先端突出部が嵌入可能にプラグハブ8に形成された係止孔9と、から構成されており、穿刺時に保護具15をプラグハブ8に係止させ、外針1からの内針抜去により針体13の先端大径部16が保護具内腔21に収容された時に保護具15とプラグハブ8との係合を解くとともに、保護具内腔21の針体前方を遮蔽する機能を有している。 And There a cover member 32 having a spring seat function of closing the opening 26 of the can project recess 22 outward is disposed between the head portion 24 of the cover member 32 and the stopper member 27 to be this spring seat , a biasing means or compression spring 33 biases the stopper member 27 constantly lumen occlusion direction, the locking hole 9 end projecting portion is formed on the fitting capable Puraguhabu 8 of the stem portion 28 of the stopper member 27, It is composed of, the protective device 15 when the puncture is engaged in Puraguhabu 8, protective equipment when the tip large diameter portion 16 of the needle body 13 by the inner needle pulled out from the outer needle 1 is housed in protection lumen 21 together to disengage the 15 and Puraguhabu 8 has a function to shield the needle body forward protection lumen 21. 【0031】次に、前述の構成を有する本実施形態の感染症防止機能および針刺し事故防止機能付き留置針の使用方法について説明する。 Next is a description of how to use the infection prevention and needle stick accident prevention function indwelling needle of the present embodiment having the configuration described above. まず、外針1内にプラグ5を介して内針11を挿着してなる穿刺針すなわち留置針組立体(図1)の針体13の針基14を把持し、内針11 First, gripping the needle hub 14 of the needle body 13 of the puncture needle i.e. indwelling needle assembly formed by inserting the inner needle 11 through the plug 5 into the outer needle 1 (Figure 1), the inner needle 11
を患者の血管(静脈または動脈)に穿刺する。 The puncture in a blood vessel (vein or artery) of a patient. 【0032】内針11の針先が血管に穿刺されると、血管の内圧(血圧)により血液が内針11内を後端方向へ逆流し、針基14内に導入され、視認性を有する針基1 [0032] in the needle tip of the needle 11 is punctured into the blood vessel, the internal pressure of the vessel (blood pressure) flows back to the inner needle 11 to the rear end direction of blood is introduced into the needle base 14 has a visibility needle base 1
4を介してこのフラッシュバックを視認することができる。 4 through can view the flashback. これにより内針11の針先が血管を確保したことを知ることができる。 Thus the needle tip of the inner needle 11 can know that it has secured the vessel. なお、針基14の後端に、周知の通気フィルタを取り付けておけば、血液の流入に伴い、針基14内の空気を通気フィルタを通して排出でき、かつ血液は、通気フィルタを通過できず、外部への漏れ出しは生じない。 Incidentally, the rear end of the needle hub 14, if fitted with a known ventilation filter, with the inflow of blood, air needle base 14 can discharge through the vent filter, and the blood can not pass through the gas permeable filter, leakage to the outside does not occur. 【0033】フラッシュバックを確認してからさらに内針11および外針1を微小距離先端方向へ進めると、外針1のカテーテル4の先端開口が血管内に挿入される。 [0033] Continuing with the inner needle 11 and outer needle 1 further after confirming flashback to a small distance distally, the distal end opening of the outer needle 1 of the catheter 4 is inserted into the blood vessel.
これにより、外針1が血管を確保する。 Thus, the outer needle 1 to secure the vessel. 【0034】次いで、血管に留置されている外針1を手で押さえつつ、他方の手で内針11の針基14を把持し、図6(a)のようにそのまま後端方向へ引き抜く。 [0034] Then, while holding the outer needle 1 is placed in a blood vessel by hand, grasps the needle hub 14 of the inner needle 11 with the other hand, pulling the intact rear direction as shown in FIG. 6 (a).
このとき、保護具15は、図1及び図5(a)のようにその保護具遮蔽手段23のストッパ部材27が針体13 At this time, protector 15, stopper member 27 of the protection shielding means 23 as shown in FIGS. 1 and FIGS. 5 (a) is a needle body 13
の小径軸部17と当接し、その茎部28の先端31が外方に突出してプラグハブ8の係止孔9と係合しているため、その膨出部19がプラグハブ8内に収容された状態で保持されており、内針11のみが相対的に後退する。 Contact between the small-diameter shaft portion 17 equivalents, the tip 31 of the stem portion 28 because of the engagement of the locking hole 9 of Puraguhabu 8 projecting outward, the bulging portion 19 is accommodated in Puraguhabu within 8 is held in the state, only the inner needle 11 is relatively backward.
このため、内針引き抜き操作時に保護具15を保持するなどの操作は不要である。 Therefore, operations such as holding the protector 15 when the inner needle retraction operation is not required. 【0035】図6(b)のように内針11がさらに後端方向へ移動すると、図3、図5(b)、図6(b)のように内針先端大径部16がストッパ部材27部分を通過して、保護具内腔21に完全に引き込まれる。 [0035] When the inner needle 11 as shown in FIG. 6 (b) is further moved in the rear direction, FIGS. 3, FIG. 5 (b), the inner needle tip large diameter portion 16 is the stopper member as shown in FIG. 6 (b) 27 through a portion, drawn entirely protection lumen 21. その際、 that time,
針体13の小径軸部17と先端大径部16間の段差が僅かであり、かつストッパ部材27が針体13の軸部上をほぼ点接触状態で摺動するため、ストッパ部材27が針体13の段差を乗り越える抵抗は極僅かである。 Step between the small-diameter shaft portion 17 and the distal end large diameter portion 16 of the needle body 13 is small, and the stopper member 27 slides in substantially point contact state on the shaft portion of the needle body 13, the stopper member 27 is a needle resistance over the bump body 13 is negligible. これにより、ストッパ部材27が針体13の軸部より解放され、圧縮ばね33の付勢力により内腔閉塞方向に移動し、ストッパ部材27の頭部24によって内腔21の針体前方が遮蔽されると同時に、茎部28の先端突出部が保護具15内に縮退してプラグハブ8の係止孔9との係合が自動的に解除され、図4のように針体13と共にこれと一体化された保護具15がプラグハブ8から取り出され、内針先端鋭利部が医療関係者に触れることがなくなる。 Thus, the stopper member 27 is released from the shaft portion of the needle body 13, moves into the lumen closed direction by the urging force of the compression spring 33, the needle body in front of the lumen 21 is blocked by the head 24 of the stopper member 27 that at the same time, it is engaged automatically release the locking hole 9 of Puraguhabu 8 end projecting portion is degenerated in the protection device 15 of the stem 28, integral with this with the needle body 13 as shown in FIG. 4 reduction has been protector 15 is removed from Puraguhabu 8, it eliminates that the inner needle tip sharp portion touches the medical personnel. 【0036】このように、本実施形態においては、外針1の後端を密閉するセプタム12を備えたプラグ5を介して内針11を取付け、内針11の針基14とプラグ5 [0036] Thus, in the present embodiment, attaching the inner needle 11 via a plug 5 provided with a septum 12 which seals the rear end of the outer needle 1, the needle hub 14 of the inner needle 11 and the plug 5
との間には、プラグハブ8内に収容可能な膨出部19を有する保持具15を配置し、保持具15の膨出部19 Between the places the retainer 15 having a housing capable of bulging portions 19 Puraguhabu within 8, the bulge portion 19 of the holder 15
に、穿刺時に保護具15をプラグハブ8に係止させ、外針1からの内針抜去により針体13の先端大径部16が保護具内腔21に収容された時に保護具15とプラグハブ8との係合を解くとともに、保護具内腔21の針体前方を遮蔽する保護具遮蔽手段23を設けたので、医療関係者や医療廃棄物の処理にあたる作業員に対する針刺し事故を防止できるだけでなく、感染症を防止することができる。 In the protection 15 when the puncture is engaged in Puraguhabu 8, Puraguhabu the protection 15 when the tip large diameter portion 16 of the needle body 13 by the inner needle pulled out from the outer needle 1 is housed in protection lumen 21 8 together to disengage with, since there is provided a protection shield means 23 for shielding the needle body forward protection lumen 21, not only can prevent accidental needle sticks for the processing corresponding to workers of medical personnel and medical waste , it is possible to prevent the infection. さらに、医療関係者にとってはこれまでの手技と同様の操作でよく、使用感に違和感がなく、使い勝手がよい。 In addition, well in the same manner and so far the procedure for the medical personnel, there is no sense of incongruity to the feeling of use, good usability. 【0037】また、保護具本体の膨出部19に外周面から軸線交差方向に凹部22を形成して、外周側から凹部22内にストッパ部材27及び圧縮ばね33を挿入設置できるようにしているので、製作が容易である。 Further, protection by forming a recess 22 in the axial cross-direction from the outer peripheral surface bulged portion 19 of the main body, and can be inserted installing the stopper member 27 and the compression spring 33 in the recess 22 from the outer peripheral side since, it is easy manufacture. 【0038】実施形態2. [0038] Embodiment 2. 図7は本発明の第2の実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用前の状態を示す断面図、図8は図7の状態の外針と内針を分離して示す断面図、図9は使用後に外針から内針を抜去した後の針体先端部が保護されている状態の内針を示す断面図であり、各図中、前述の第1実施形態のものと同一部分には同一符号を付してある。 Figure 7 a cross-sectional view showing the state prior to the use of infection prevention and needle stick accident prevention function indwelling needle according to a second embodiment of the present invention, FIG 8 is separated outer needle and the inner needle in the state of FIG. 7 sectional view is shown, FIG. 9 is a sectional view showing the inner needle in a state where the needle body tip after the inner needle is pulled out from the outer needle is protected after use, in the figures, the first embodiment described above to those same portions of the embodiment are denoted by the same reference numerals. 【0039】この第2実施形態の感染症防止機能および針刺し事故防止機能付き留置針は、内針11の針基14 The hub 14 of this infection prevention and needle stick accident prevention function indwelling needle of the second embodiment, the inner needle 11
の先端に、保護具15の本体後端部を収容可能なハブ4 The tip, protector 15 body rear portion can accommodate the hub 4
1を設けた点が、前述の第1実施形態のものと異なっており、外針1、プラグ5、保護具遮蔽手段23を含むそれ以外の構成は全て第1実施形態のものと同一であり、 Point provided with 1, is different from that of the first embodiment described above, the outer needle 1, the plug 5, the configuration other than that including the protection shielding means 23 is identical to that of all of the first embodiment ,
第1実施形態のもつ機能を全て備えている。 It has all the functions of the first embodiment. 【0040】本実施形態においては、保護具15の本体後端部が内針針基14の先端のハブ41に覆われた状態で外針1と内針11の組付体(図7)が完成し、この状態で穿刺が行われ、穿刺後に外針1から内針11が抜去(図9)される。 [0040] In this embodiment, assembly of the protective device 15 of the main body rear end portion inner needle hub 14 of the front end outer needle 1 and the inner needle 11 in a state covered with the hub 41 of (FIG. 7) completed, puncturing in this state is performed, the inner needle 11 is withdrawn (Fig. 9) after the puncture from the outer needle 1. したがって、穿刺から内針抜去に至るまで、保護具15の本体後端部が医療関係者に触れることがなくなり、内針抜去時に針基14と共に保護具15 Therefore, until the inner needle removed from the puncture, the body rear end portion of the protection device 15 is no longer being exposed to medical personnel protection with hub 14 at the inner needle removed 15
の本体後端部が誤って握られてプラグハブ8から保護具15が無理矢理引き抜かれる事故を未然に防止することができる。 The accident gripped incorrectly body rear portion protector 15 from Puraguhabu 8 is pulled out by force may be prevented. 【0041】実施形態3. [0041] Embodiment 3. 図10は本発明の第3の実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用前の状態を示す断面図、図11は図10 Figure 10 is a sectional view showing a third state before use of the infection prevention and needle stick accident prevention function indwelling needle according to a third embodiment of the present invention, Figure 11 Figure 10
の状態の外針と内針を分離して示す断面図、図12は使用後に外針から内針を抜去する時の状態を示す断面図、 Cross-sectional view showing the outer needle and the inner needle and the separation of the state, cross-sectional view FIG. 12 showing a state in which pulling the inner needle out of the outer needle after use,
図13は外針から内針を抜去した後の針体先端部が保護されている状態の内針を示す断面図、図14はラッチ部材による針体ラッチ前(a)とラッチ後(b)の状態を示す保護具固定手段部の断面図、図15は内針抜去時の動作の説明図であり、各図中、前述の第1実施形態のものと同一機能部分には同一符号を付してある。 Figure 13 is a sectional view showing the inner needle in a state where the needle body tip after pulling the inner needle out of the outer needle is protected, 14-needle latch before by the latch member (a) and after the latch (b) sectional view of the state of the protection fixing means unit shown, Fig. 15 is an explanatory view of the operation when the inner needle removed, in each figure, the same reference numerals to those same functional parts of the first embodiment described above are you. 【0042】この第3実施形態の感染症防止機能および針刺し事故防止機能付き留置針は、針体先端部を所定長さ覆うことのできる長さを有する保護具15Aの本体が二重筒からなり、その内筒51の後端部には、基本的にストレート状の針体13Aが挿通される内腔21をエリア内に納めて軸線交差方向に貫通するスリット52が形成されているとともに、その外筒53の前記スリット5 [0042] The third embodiment infection prevention and needle stick accident prevention function indwelling needle of the body of the protector 15A having a length capable of covering the needle body distal portion a predetermined length is a double barrel , the rear end of the inner tube 51, along with the slits 52 penetrating in axial cross direction by paying a lumen 21 in an area essentially straight needle body 13A is inserted is formed, the the slit 5 of the outer cylinder 53
2に対応する位置に膨出部54が形成され、膨出部54 2 bulging portion 54 is formed at a position corresponding to the bulging portion 54
に、スリット52よりも軸線方向の空間幅を大きく設定されてスリット52に連通する凹部55がその外周面から軸線交差方向に形成され、スリット52及び凹部55 The recess 55 is set large space width in the axial direction communicating with the slit 52 is formed in the axial cross-direction from the outer peripheral surface than the slit 52, the slit 52 and the recess 55
の内部に保護具固定手段56が設置されている。 Protection fastening means 56 therein is disposed of. 【0043】保護具固定手段56は、図14のように針体13Aの先端部外周に形成した所定幅のリング状溝5 The protection fixing means 56, the ring-shaped groove 5 with a predetermined width formed on the tip end outer periphery of the needle body 13A as shown in FIG. 14
7と、一端側がリング状溝57にのみ嵌入可能なスリット58を有する幅広部59、他端側が幅広部59の中央部から延出する幅狭片61に形成され、幅狭片61側より外筒53の凹部55および内筒51のスリット52内に挿入されて、幅広部59のスリット58の開口を針体13Aの軸部に跨らせた状態で、かつ幅狭片61の先端が外筒凹部55のばね座機能をもつ底部62に設けたガイド用孔63より外方に突出可能に設置されたプレートからなるラッチ部材64と、外筒凹部55のばね座となる底部62とラッチ部材64の幅広部59との間に配設されて、ラッチ部材64を常時針体ラッチ方向に付勢する付勢手段すなわち圧縮ばね33Aと、ラッチ部材64 7, one end side is formed narrower strips 61 extending from the central portion of the wide portion 59, the other end side wide portions 59 having a slit 58 which can be fitted only to the ring-shaped groove 57, outer than the narrow strips 61 side is inserted into the slit 52 of the recess 55 and the inner cylinder 51 of the cylinder 53, the opening of the slit 58 of the wide portion 59 in a state allowed span on the shaft of the needle body 13A, and the tip of the narrow strips 61 outside a latch member 64 made of a guide hole 63 provided in the bottom 62 of can project the installed plates outwardly with spring seat function of the cylindrical recess 55, a spring seat of the outer cylinder recess 55 the bottom 62 and the latch member 64 is disposed between the wide portion 59 of the biasing means or compression spring 33A biases the latch member 64 at all times the needle body latch direction, the latch member 64
の幅狭片61の先端突出部が嵌入可能にプラグハブ8A Capable Puraguhabu 8A end projecting portion of the narrow strip 61 fitted
に形成された係止部すなわち係止孔9Aと、から構成されており、穿刺時に保護具15Aをプラグハブ8Aに係止させ、外針1からの内針抜去により針体13Aの先端部が保護具内腔21に収容された時に保護具15Aとプラグハブ8Aとの係合を解くとともに、針体13Aのリング状溝57をラッチ部材64のスリット58にてラッチする機能を有している。 It is composed of a locking portion or locking hole 9A formed on the protective equipment 15A at the puncture to engage with the Puraguhabu 8A, the tip portion of the needle body 13A by the inner needle pulled out from the outer needle 1 is protected together to disengage the protection 15A and Puraguhabu 8A when housed in Gunai腔 21 has a function to latch the ring-shaped groove 57 of the needle body 13A in the slit 58 of the latch member 64. 【0044】プラグハブ8Aは、保護具15Aの前端部を覆う小径ハブ部8aと、保護具15Aの後端部を覆う大径ハブ部8bとからなる段筒状に形成され、二重筒からなる保護具15Aの全長を全て覆うことのできる長さに設定されている。 [0044] Puraguhabu 8A includes a small-diameter hub portion 8a which covers the front end of the protector 15A, it is formed in a stepped cylindrical shape consisting of a large diameter hub portion 8b that covers the rear end portion of the protector 15A, consisting of double cylinder It is set to a length capable of covering all the entire length of the protective equipment 15A. また大径ハブ部8bには、外筒凹部55の底部62のガイド用孔63に対応する位置に、ラッチ部材64の幅狭片61の先端突出部が嵌入可能な係止孔9Aが形成されているとともに、係止孔9Aと18 Also the large diameter hub portion 8b, a position corresponding to the guide hole 63 of the bottom 62 of the outer cylinder recess 55, the narrow strip 61 of the tip protrusion fittable engagement hole 9A of the latch member 64 is formed with that, the locking hole 9A and 18
0°異なる位置、換言すれば外筒凹部55の開口に対応する位置に、保護具固定手段56の組立作業用の孔65 0 ° different located at a position corresponding to the opening of the outer cylinder recess 55 in other words, holes 65 for assembly of the protective equipment fixing means 56
が形成されている。 There has been formed. それ以外の構成は前述の第1実施形態のものと同様である。 Other configurations are the same as in the first embodiment described above. 【0045】本実施形態において、針体13Aの先端部外周に形成したリング状溝57の深さは針体肉厚の10 In the present embodiment, the depth of the ring-shaped groove 57 formed on the distal end outer periphery of the needle body 13A is needle body thickness 10
〜70%、好ましくは20〜30%に、ラッチ部材64 70%, preferably to 20-30%, the latch member 64
のリング状溝57との嵌合時の落下距離は針体13Aの外径寸法以上、リング状溝57の溝幅はラッチ部材64 The drop distance during the fitting of the ring-shaped groove 57 is the needle body 13A outer diameter or more, the groove width of the latch member 64 of the ring-shaped groove 57
の肉厚を1mm以下とした場合で1〜5mmに設定されている。 The thickness of the is set to 1~5mm in the case of a 1mm or less. ラッチ部材64のリング状溝57との引っ掛かり部は僅かであるが、図14(b)及び図15(b)に示すようにラッチ時にラッチ部材64のスリット58のエッジが180°以上に亘りリング状溝57の側面と係合するため、確実に拘束できることが実験の結果判明している。 While catches of the ring-shaped groove 57 of the latch member 64 is small, and FIG. 14 (b) and 15 edges of the slit 58 of the latch member 64 at the time of the latch as shown in (b) is for more than 180 ° ring to the side surface engaging the shaped groove 57, can be reliably restrained is known results of the experiment. またラッチ部材64のスリット58への導入部に面取りを施すことが好ましいことも分かった。 The was also found that it is preferable to chamfer the introduction portion into the slit 58 of the latch member 64. 【0046】次に、前述の構成を有する本実施形態の感染症防止機能および針刺し事故防止機能付き留置針の使用方法について説明する。 Next, a description will be given of a method used for infection prevention and needle stick accident prevention function indwelling needle of the present embodiment having the configuration described above. まず、外針1内にプラグ5A First, plug 5A to the outer needle 1
を介して内針11Aを挿着してなる穿刺針すなわち留置針組立体(図10)の針体13Aの針基14を把持し、 Gripping the needle hub 14 of the needle body 13A of the puncture needle i.e. indwelling needle assembly the inner needle 11A formed by inserted (FIG. 10) via the,
内針11Aを患者の血管(静脈または動脈)に穿刺する。 The inner needle 11A to puncture the vessel (vein or artery) of a patient. 【0047】内針11Aの針先が血管に穿刺されると、 [0047] in the needle tip of the needle 11A is pierced into a blood vessel,
血管の内圧(血圧)により血液が内針11A内を後端方向へ逆流し、針基14内に導入され、視認性を有する針基14を介してこのフラッシュバックを視認することができる。 The internal pressure of the vessel (blood pressure) flows back through the inner needle 11A toward the rear direction of blood is introduced into the needle base 14, it is possible to visually recognize the flashback through the needle hub 14 having visibility. これにより内針11Aの針先が血管を確保したことを知ることができる。 Thus the needle tip of the inner needle 11A can know that it has secured the vessel. なお、針基14の後端に、周知の通気フィルタを取り付けておけば、血液の流入に伴い、針基14内の空気を通気フィルタを通して排出でき、かつ血液は、通気フィルタを通過できず、外部への漏れ出しは生じない。 Incidentally, the rear end of the needle hub 14, if fitted with a known ventilation filter, with the inflow of blood, air needle base 14 can discharge through the vent filter, and the blood can not pass through the gas permeable filter, leakage to the outside does not occur. 【0048】フラッシュバックを確認してからさらに内針11Aおよび外針1を微小距離先端方向へ進めると、 [0048] Continuing with the needle 11A and the outer needle 1 inner further after confirming flashback to a small distance distally,
外針1のカテーテル4の先端開口が血管内に挿入される。 Tip opening of the outer needle 1 of the catheter 4 is inserted into the blood vessel. これにより、外針1が血管を確保する。 Thus, the outer needle 1 to secure the vessel. 【0049】次いで、血管に留置されている外針1を手で押さえつつ、他方の手で内針11Aの針基14を把持し、図15(a)のようにそのまま後端方向へ引き抜く。 [0049] Then, while holding the outer needle 1 is placed in a blood vessel by hand, grasps the needle hub 14 of the inner needle 11A by the other hand, pulling the intact rear direction as shown in FIG. 15 (a). このとき、保護具15Aは、図10及び図14 At this time, protector 15A is 10 and 14
(a)のようにその保護具固定手段56のラッチ部材6 Latch member 6 of the protector fixing means 56 as shown in (a)
4がそのスリット58の開口を針体13Aの軸部に跨らせた状態で針体13Aの軸部と当接し、その幅狭片61 4 abuts the shank of the needle body 13A in a state where the span to the axis of the opening of the needle body 13A of the slit 58, the narrow strip 61
の先端が外方に突出してプラグハブ8Aの係止孔9Aと係合しているため、全長に亘ってプラグハブ8A内に収容された状態で保持されており、内針11Aのみが相対的に後退する。 The tip of which engages the locking hole 9A of Puraguhabu 8A projecting outward, are held in a state of being accommodated in Puraguhabu in 8A along the entire length, only the inner needle 11A is relatively retracted to. このため、内針引き抜き操作時に保護具15Aを保持するなどの操作は不要である。 Therefore, operations such as holding the protector 15A when the inner needle retraction operation is not required. 【0050】図15(b)のように内針11Aがさらに後端方向へ移動すると、図12、図14(b)、図15 [0050] When the inner needle 11A as shown in FIG. 15 (b) is further moved toward the rear direction, FIGS. 12, FIG. 14 (b), the 15
(b)のように内針先端部が保護具内腔21に完全に引き込まれるとともに、針体先端のリング状溝57がラッチ部材64位置に到達する。 With the inner needle tip portion as in (b) is fully retracted into the protection lumen 21, the needle body distal end of the ring-shaped groove 57 reaches the latching member 64 position. これにより、ラッチ部材6 Thus, the latch member 6
4のスリット58の両側エッジが針体13Aのリング状溝57内に嵌入係合し、その状態でスリット58最奥部の円弧部エッジがリング状溝57内に嵌入して係合するまで圧縮ばね33Aの付勢力によりスライドし、ラッチ部材64のスリット58によって保護具15Aに対する針体13Aの位置が固定されると同時に、ラッチ部材6 Both edges of the fourth slit 58 is engaged fit engagement in the needle body 13A of the ring-shaped groove 57, compressed to the arc edge of the slit 58 innermost portion in this state is engaged with fitted in the ring-shaped groove 57 slide by the biasing force of the spring 33A, the position of the needle body 13A is fixed with respect to protection 15A by the slit 58 of the latch member 64 at the same time, the latch member 6
4の幅狭片61の先端突出部が保護具15A内に縮退してプラグハブ8Aの係止孔9Aとの係合が自動的に解除され、図13のように針体13Aと共にこれと一体化された保護具15Aがプラグハブ8Aから取り出され、内針先端鋭利部が医療関係者に触れることがなくなる。 End projecting portion 4 of the narrow strip 61 is engaged automatically release the locking hole 9A of degenerated to Puraguhabu 8A in protection 15A, integral with which with the needle body 13A as shown in FIG. 13 been protector 15A is removed from Puraguhabu 8A, it eliminated that the inner needle tip sharp portion touches the medical personnel. 【0051】このように、本実施形態においては、外針1の後端を密閉するセプタム12を備えたプラグ5Aを介して内針11Aを取付け、内針11Aの針基14とプラグ5Aとの間には、プラグハブ8A内に収容可能な保持具15Aを配置し、保持具15Aに、穿刺時に保護具15Aをプラグハブ8Aに係止させ、外針1からの内針抜去により針体13Aの先端部が保護具内腔21に収容された時に保護具15Aとプラグハブ8Aとの係合を解くとともに、保護具15A内の針体13Aをラッチして保護具15Aに対する針体13Aの位置を固定、換言すれば針体13Aに対する保護具15Aの位置を固定する保護具固定手段56を設けたので、医療関係者や医療廃棄物の処理にあたる作業員に対する針刺し事故を防止できるだけでなく、 [0051] Thus, in the present embodiment, fitted with the inner needle 11A via the plug 5A with a septum 12 which seals the rear end of the outer needle 1, the inner needle 11A hub 14 and the plug 5A between, can accommodate retainer 15A disposed within Puraguhabu 8A, the holder 15A, the protective equipment 15A at the puncture to engage with the Puraguhabu 8A, the tip of the needle body 13A by the inner needle pulled out from the outer needle 1 part together to disengage the protection 15A and Puraguhabu 8A when the housed protection lumen 21, fixing the position of the needle body 13A for protection 15A the needle body 13A in protection 15A latches, is provided with the protective equipment fixing means 56 for fixing the position of the protection 15A against in other words the needle body 13A, not only prevent accidental needle sticks for the processing corresponding to workers of medical personnel and medical waste, 染症を防止することができる。 It is possible to prevent infectious diseases. さらに、医療関係者にとってはこれまでの手技と同様の操作でよく、使用感に違和感がなく、使い勝手がよい。 In addition, well in the same manner and so far the procedure for the medical personnel, there is no sense of incongruity to the feeling of use, good usability. 【0052】また、保護具本体を二重筒から形成して、 [0052] Also, the protection body is formed from a double cylinder,
その内筒51の後端部に軸線交差方向に貫通する貫通孔52を設けるとともに、その外筒53の前記貫通孔52 Provided with a through hole 52 penetrating in axial cross direction to the rear end of the inner cylinder 51, the through hole 52 of the outer tube 53
に対応する位置に膨出部54を形成し、かつ膨出部54 The bulging portion 54 is formed at a position corresponding to, and the bulging portion 54
に貫通孔52に連通する凹部55を外周面から軸線交差方向に形成して、外周側から凹部55内にラッチ部材6 Formed from the outer peripheral surface of the recess 55 communicating with the through hole 52 in the axial cross-direction, the latch member 6 into the recess 55 from the outer peripheral side
4及び圧縮ばね33Aを挿入設置できるようにしているので、製作が容易である。 4 and because the compression spring 33A so that the insertion can be installed, it is easy manufacture. 【0053】また、保護具15Aが全長に亘ってプラグハブ8Aに覆われた状態で外針1と内針11Aの組付体(図10)が完成し、この状態で穿刺が行われ、穿刺後に外針1から内針11Aが抜去(図12、図13)されるので、穿刺から内針抜去に至るまで、保護具15Aが医療関係者に触れることがない。 [0053] Furthermore, the assembled unit of the outer needle 1 and the inner needle 11A in a state in which protector 15A is covered with Puraguhabu 8A over the entire length (Fig. 10) is completed, puncturing is performed in this state, after the puncture inner needle 11A is pulled out of the outer needle 1 (Figure 12, Figure 13) so the the, up to the inner needle removed from the puncture, protective equipment 15A does not touch the medical personnel. また、内針抜去時に針基14と共に保護具15Aの一部が誤って握られてプラグハブ8Aから保護具15Aが無理矢理引き抜かれることもない。 Moreover, nor protection 15A part of protective equipment 15A at the inner needle removed with hub 14 is grasped from accidentally Puraguhabu 8A is withdrawn by force. 【0054】実施形態4. [0054] Embodiment 4. 図16は本発明の第4の実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用前の状態を示す断面図、図17は図16 Figure 16 is a sectional view showing a fourth state before use of the infection prevention and needle stick accident prevention function indwelling needle according to a third embodiment of the present invention, FIG. 17 FIG. 16
の状態の外針と内針を分離して示す断面図、図18は使用後に外針から内針を抜去する時の状態を示す断面図、 Cross-sectional view showing the outer needle and the inner needle and the separation of the state, and FIG. 18 is a sectional view showing a state in which pulling the inner needle out of the outer needle after use,
図19は外針から内針を抜去した後の針体先端部が保護されている状態の内針を示す断面図、図20は棒状部材による針体固定前(a)と固定後(b)の状態を示す保護具固定手段部の断面図、図21は内針抜去時の動作の説明図、図22は針体異形軸部の形状例を示す説明図であり、各図中、前述の第1実施形態のものと同一機能部分には同一符号を付してある。 Figure 19 is a sectional view showing an inner needle in a state where the needle body tip after pulling the inner needle out of the outer needle is protected, Figure 20 is the front needle body fixed by the rod-like member (a) and after fixing (b) sectional view of the protector fixing means portion showing a state of FIG. 21 is an explanatory view of operation when the inner needle removed, Figure 22 is an explanatory diagram showing an example of the shape of the needle body profiled shaft part, in the figures, the aforementioned to those same functional parts of the first embodiment are denoted by the same reference numerals. 【0055】この第4実施形態の感染症防止機能および針刺し事故防止機能付き留置針は、内針11Bの針体1 [0055] The fourth infection prevention and needle stick accident prevention function indwelling needle embodiment, the needle body of the inner needle 11B 1
3Bが、先端に大径軸部16Bを有するとともに、その後端側が図22(a)のように大径軸部16Bの断面エリア内に形成される異形軸部(ここでは楕円状)17B 3B, together with a large-diameter shaft portion 16B on the distal end, the rear end profiled shaft portion formed in the cross-sectional area of ​​the large diameter shaft portion 16B as shown in FIG. 22 (a) (elliptical in this case) 17B
に設けられ、さらに大径軸部16Bの外周に、後述の保護具固定手段72の棒状部材73が嵌入可能な穴71が穿設されている。 Provided further on the outer periphery of the large diameter shaft portion 16B, the hole 71 the bar-like member 73 is fittable protection fixing means 72 described later are bored. 【0056】保護具15Bの本体は、針体先端の大径軸部16Bを覆うことのできる長さを有し、内針11Bの針基14と感染症防止用のプラグ5Bとの間に配置され、図20(a)のようにその後端の楕円開口18Bにより針体13Bの異形軸部17Bにスプライン係合してスライド自在に嵌合設置されていて、その先端部にはプラグ5Bのプラグハブ8B内に収容可能な膨出部19B [0056] body of the protector 15B has a length capable of covering the large diameter shaft portion 16B of the needle body tip, disposed between the plug 5B for infection prevention and the hub 14 of the inner needle 11B is, Puraguhabu plug 5B is a splined by the elliptical openings 18B of the rear end to the profiled shaft portion 17B of the needle body 13B to have been installed slidably fitted, at its distal end as shown in FIG. 20 (a) It can accommodate bulging portion 19B in the 8B
が形成され、膨出部19Bに、図20のように針体13 There are formed, the bulging portion 19B, the needle body as shown in Fig. 20 13
Bが挿通される内腔21をエリア内に納める凹部22がその外周面から軸線交差方向に形成され、凹部22内に保護具固定手段72が設置されている。 B recess 22 to pay the lumen 21 in the area to be inserted is formed in the axial cross-direction from the outer peripheral surface protection fixing means 72 is disposed in the recess 22. 【0057】プラグハブ8Bは、既述したように保護具15Bの膨出部19Bを収容可能な保護具収容部を有し、この保護具収容部に、後述の棒状部材突出部との係止部すなわち係止孔9Bが形成されている。 [0057] Puraguhabu 8B has a protection housing portion capable of housing the bulging portion 19B of the protector 15B as already described, this protector accommodating portion, the engagement portion of the rod member projecting portion below that locking hole 9B is formed. 【0058】保護具固定手段72は、図20のようにガイド機能およびばね座機能をもつフランジ74を有し、 [0058] protection fixing means 72 has a flange 74 having a guide function and spring seat feature as shown in Figure 20,
一端部75が針体13B大径軸部16Bの穴71に嵌入可能に保護具本体の凹部22内に挿入された棒状部材7 Rod-like member 7 of which one end portion 75 is inserted into the needle body 13B large diameter shaft portion 16B recess 22 of the fitting capable protector body into the hole 71 of the
3と、棒状部材73の他端部76を案内するガイド用孔29を有し、この他端部76の先端が外方に突出可能に凹部22の開口部26を閉塞するばね座となる蓋部材3 3, has a guide hole 29 for guiding the other end 76 of the rod 73, a spring seat the tip of the other end portion 76 closes the opening 26 of the can project recess 22 outwardly lid member 3
2と、このばね座となる蓋部材32と棒状部材73のフランジ74との間に配設されて、棒状部材73を常時穴嵌入方向に付勢する付勢手段すなわち圧縮ばね33B 2, the spring seat to become disposed between the flange 74 of the cover member 32 and the rod member 73, the biasing means or compression spring 33B urges the rod-like member 73 at all times well fitted direction
と、棒状部材73他端部の突出部が嵌入可能にプラグハブ8Bに形成された係止孔9Bと、から構成されており、穿刺時に保護具15Bをプラグハブ8Bに係止させ、外針1からの内針抜去により針体13Bの先端大径軸部16Bが保護具内腔21に収容された時に保護具1 When the locking hole 9B the protrusion of the rod-like member 73 and the other end portion is formed to fit capable Puraguhabu 8B, it is composed of, is engaged protective equipment 15B at Puraguhabu 8B during puncture, from the outer needle 1 protector 1 when the tip large diameter shaft portion 16B of the needle body 13B is the inner needle removed housed protection lumen 21 of
5Bとプラグハブ8Bとの係合を解くとともに、保護具内の針体13Bと係合して針体13Bに対する保護具1 Together to disengage the 5B and Puraguhabu 8B, protection against needle body 13B and engaged with the needle body 13B in the protector 1
5Bの軸方向位置を固定する機能を有している。 And it has a function of fixing the axial position of 5B. 【0059】なお、説明の都合上、図16乃至図19及び図21の上段の図では、針体13Bが異形軸部17B [0059] In the convenience, the upper part of FIG. 16 to 19 and 21 of the description, the needle body 13B is deformed shaft portion 17B
側からみて楕円形状の短辺側から進入するように表現しているが、これは異形軸部17Bがあることを視覚的に説明できるようにしているためであり、実際には図20 Although expressed as to enter from the short side of the elliptical shape as viewed from the side, this is because it is to be visually explained that there is a profiled shaft portion 17B, in practice 20
及び図21の下段の図に示すように針体13Bは異形軸部17B側からみて楕円形状の長辺側から進入するように設定されている。 And the needle body 13B as shown in the lower part of FIG. 21 is set to enter from the long side of the elliptical shape as viewed from the profiled shaft portion 17B side. これは、内針抜去時に針体13Bがスライドして異形軸部17Bから大径軸部16Bへ移行する際に段差をなくして、移行動作がスムーズに行われるようにするためである。 This needle body 13B when the inner needle withdrawal is lost a step at the transition to slide from the profiled shaft portion 17B to the large diameter shaft portion 16B, is so that migration operation can be performed smoothly. それ以外の構成は前述の第1 The other structure first described above
実施形態のものと同様である。 It is similar to those of the embodiment. 【0060】次に、前述の構成を有する本実施形態の感染症防止機能および針刺し事故防止機能付き留置針の使用方法について説明する。 Next, a description will be given of a method used for infection prevention and needle stick accident prevention function indwelling needle of the present embodiment having the configuration described above. まず、外針1内にプラグ5B First, plug 5B into the outer needle 1
を介して内針11Bを挿着してなる穿刺針すなわち留置針組立体(図16)の針体13Bの針基14を把持し、 Gripping the needle hub 14 of the needle body 13B of the puncture needle i.e. indwelling needle assembly the inner needle 11B formed by inserted (FIG. 16) via the,
内針11Bを患者の血管(静脈または動脈)に穿刺する。 The inner needle 11B to puncture the vessel (vein or artery) of a patient. 【0061】内針11Bの針先が血管に穿刺されると、 [0061] in the needle tip of the needle 11B is punctured into the blood vessel,
血管の内圧(血圧)により血液が内針11B内を後端方向へ逆流し、針基14内に導入され、視認性を有する針基14を介してこのフラッシュバックを視認することができる。 The internal pressure of the vessel (blood pressure) flows back through the inner needle 11B to the rear end direction of blood is introduced into the needle base 14, it is possible to visually recognize the flashback through the needle hub 14 having visibility. これにより内針11Bの針先が血管を確保したことを知ることができる。 Thus the needle tip of the inner needle 11B can know that it has secured the vessel. なお、針基14の後端に、周知の通気フィルタを取り付けておけば、血液の流入に伴い、針基14内の空気を通気フィルタを通して排出でき、かつ血液は、通気フィルタを通過できず、外部への漏れ出しは生じない。 Incidentally, the rear end of the needle hub 14, if fitted with a known ventilation filter, with the inflow of blood, air needle base 14 can discharge through the vent filter, and the blood can not pass through the gas permeable filter, leakage to the outside does not occur. 【0062】フラッシュバックを確認してからさらに内針11Bおよび外針1を微小距離先端方向へ進めると、 [0062] Continuing with needle 11B and the outer needle 1 inner further after confirming flashback to a small distance distally,
外針1のカテーテル4の先端開口が血管内に挿入される。 Tip opening of the outer needle 1 of the catheter 4 is inserted into the blood vessel. これにより、外針1が血管を確保する。 Thus, the outer needle 1 to secure the vessel. 【0063】次いで、血管に留置されている外針1を手で押さえつつ、他方の手で内針11Bの針基14を把持し、図21(a)のようにそのまま後端方向へ引き抜く。 [0063] Then, while holding the outer needle 1 is placed in a blood vessel by hand, grasps the needle hub 14 of the inner needle 11B by the other hand, pulling the intact rear direction as shown in FIG. 21 (a). このとき、保護具15Bは、図16及び図20 At this time, protector 15B is 16 and 20
(a)のようにその保護具固定手段72の棒状部材73 Rod-like member 73 of the protector fixing means 72 as shown in (a)
が針体13Bの異形軸部17Bと当接し、その他端部7 There abuts a profiled shaft portion 17B of the needle body 13B, the other end 7
6の先端が外方に突出してプラグハブ8Bの係止孔9B Locking hole 9B of Puraguhabu 8B tip 6 protrudes outward
と係合しているため、その膨出部19Bがプラグハブ8 Because of the engagement with, its bulging portion 19B is Puraguhabu 8
B内に収容された状態で保持されており、内針11Bのみが相対的に後退する。 Is held in the contained state in the B, only the inner needle 11B is relatively backward. このため、内針引き抜き操作時に保護具15Bを保持するなどの操作は不要である。 Therefore, operations such as holding the protector 15B when the inner needle retraction operation is not required. 【0064】図21(b)のように内針11Bがさらに後端方向へ移動すると、図18、図20(b)、図21 [0064] When the inner needle 11B as shown in FIG. 21 (b) is further moved in the rear direction, FIGS. 18, FIG. 20 (b), the 21
(b)のように内針11Bの大径軸部16Bが保護具内腔21に完全に引き込まれるとともに、大径軸部16B With large diameter shaft portion 16B of the inner needle 11B is pulled into entirely protection lumen 21 as in (b), however, the large diameter shaft portion 16B
に設けた穴71が棒状部材73位置に到達する。 Hole 71 provided to reach the rod-like member 73 position. これにより、棒状部材73が圧縮ばね33Bの付勢力によって針体13Bの穴71に嵌入係合し、保護具15Bに対する針体13Bの位置が固定されると同時に、棒状部材7 Thus, at the same time when the bar-like member 73 engages fitted engagement in the hole 71 of the needle body 13B, the position of the needle body 13B for protection 15B is fixed by the urging force of the compression spring 33B, the rod-shaped member 7
3の他端部76が保護具15B内に縮退してプラグハブ8Bの係止孔9Bとの係合が自動的に解除され、図19 Engagement of the locking hole 9B of the third other end portion 76 is compressed to a protection 15B by Puraguhabu 8B is released automatically, 19
のように針体13Bと共にこれと一体化された保護具1 Protector 1 which is integrated with this with the needle body 13B as
5Bがプラグハブ8Bから取り出され、内針先端鋭利部が医療関係者に触れることがなくなる。 5B is retrieved from Puraguhabu 8B, eliminated that the inner needle tip sharp portion touches the medical personnel. 【0065】このように、本実施形態においては、外針1の後端を密閉するセプタム12を備えたプラグ5Bを介して内針11Bを取付け、内針11Bの針基14とプラグ5Bとの間には、プラグハブ8B内に収容可能な膨出部19Bを有する保持具15Bを配置し、保持具15 [0065] Thus, in the present embodiment, fitted with the inner needle 11B through the plug 5B having a septum 12 which seals the rear end of the outer needle 1, the inner needle 11B hub 14 and the plug 5B between, place the retainer 15B with a can accommodate bulging portion 19B in Puraguhabu in 8B, the retainer 15
Bに、穿刺時に保護具15Bをプラグハブ8Bに係止させ、外針1からの内針抜去により針体13Bの先端大径軸部16Bが保護具内腔21に収容された時に保護具1 In B, and protective equipment 15B at the puncture to engage with the Puraguhabu 8B, protector 1 when the tip large diameter shaft portion 16B of the needle body 13B by the inner needle pulled out from the outer needle 1 is housed in protection lumen 21
5Bとプラグハブ8Bとの係合を解くとともに、保護具15B内の針体13Bの位置を固定、換言すれば針体1 Together to disengage the 5B and Puraguhabu 8B, fix the position of the needle body 13B in the protector 15B, the needle body 1 in other words
3Bに対する保護具15Bの位置を固定する保護具固定手段72を設けたので、医療関係者や医療廃棄物の処理にあたる作業員に対する針刺し事故を防止できるだけでなく、感染症を防止することができる。 Is provided with the protective equipment fixing means 72 for fixing the position of the protective equipment 15B against 3B, not only prevent accidental needle sticks for the processing corresponding to workers of medical personnel and medical waste, it is possible to prevent the infection. さらに、医療関係者にとってはこれまでの手技と同様の操作でよく、使用感に違和感がなく、使い勝手がよい。 In addition, well in the same manner and so far the procedure for the medical personnel, there is no sense of incongruity to the feeling of use, good usability. 【0066】また、保護具本体の膨出部19Bに外周面から軸線交差方向に凹部22を形成して、外周側から凹部22内に棒状部材73及び圧縮ばね33B挿入設置できるようにしているので、製作が容易である。 [0066] In addition, protection by forming a recess 22 in the axial cross-direction from the outer peripheral surface bulging portion 19B of the main body, since to be able to bar-like member 73 and the compression spring 33B inserted placed into the recess 22 from the outer peripheral side , it is easy manufacture. 【0067】なお、ここでは針体13Bとしてその異形軸部17Bの形状が楕円状のものを例に挙げて説明したが、これに限るものでなく、例えば図22(b)に示すような大径軸部16Bの断面エリア内に形成されて大径軸部16Bの円形の中心を通る線の両側に平坦面を有する異形軸部17Cを設けた針体13C、あるいは図22 [0067] Here, the shape of the profiled shaft portion 17B has been described as an example those elliptical as needle body 13B is not limited to this, for example, large as shown in FIG. 22 (b) needles 13C provided profiled shaft portion 17C having a flat surface on both sides of the line passing through the circular center of diameter shaft portion 16B of the formed cross section area and the large diameter shaft portion 16B or FIG. 22,
(c)に示すような大径軸部16Bの断面エリア内に形成された正方形状の異形軸部17Dを設けた針体13D Needle body 13D having a large diameter shaft portion 16B profiled shaft part 17D shaped square formed cross section area, such as shown in (c)
等、保持具側とスプライン係合できる形状であれば如何様な断面形状を採用してもよい。 Etc., if the holder side and a splined can shape any way of cross-sectional shapes may be employed. なお、この針体に異形軸部を設けて保持具側とスプライン係合させる方式は前述の第1乃至第3実施形態でも採用可能であることは言うまでもない。 Needless to say, the needle body system engaged retainer side and spline provided profiled shaft portion can be adopted in the first to third embodiments described above. 【0068】また、ここでは保持具本体に凹部22を形成して、この凹部22内に保護具固定手段72を設置したものを例に挙げて説明したが、これを図23に示すように保持具本体に針体が挿通される内腔21をエリア内に納める貫通孔81を形成し、貫通孔81の内腔21を挟む一方の開口部には、ばね座となる内向きフランジ8 [0068] Further, where it forms a recess 22 in the holder main body is a material obtained by installing a protection fixing means 72 in the recess 22 has been described as an example, hold it, as shown in FIG. 23 the lumen 21 is formed a through hole 81 which fit into an area the needle body to the ingredients body is inserted, the one opening sandwiching the lumen 21 of the through hole 81, an inward flange 8 serving as a spring seat
2を、貫通孔81の内腔21を挟む他方の内壁には、保護具固定手段72の棒状部材73を圧入可能な突起あるいはリブ83を設け、突起あるいはリブ83側開口部より貫通孔81内に保護具固定手段72を圧入装着するようにしてもよい。 2, the other inner wall sandwiching the lumen 21 of the through hole 81, protector rod-shaped member 73 projecting or ribs 83 which can press-fixing means 72 is provided, projections or ribs 83 side opening than the through hole 81 the protective equipment fixing means 72 may be press-fitted into. なお、この貫通孔方式は前述の第1、 Incidentally, the through-hole method first includes the aforementioned,
第2実施形態でも採用可能であることは言うまでもない。 It goes without saying also be employed in the second embodiment. 【0069】また、図24のようにプラグハブ8Bの内周面に、その開口端面より係止孔9Bに連なる軸方向の溝91を形成してもよい。 [0069] Further, the inner peripheral surface of the Puraguhabu 8B as shown in FIG. 24, may be formed axial grooves 91 communicating with the locking hole 9B from its open end face. このような溝91を設けることで、保護具15Bとプラグハブ8Bとの係合解除時に棒状部材73の他端部76が保護具15Bより若干突出するような構造があっても、この突出部を溝91を通して引き抜くことができる。 By providing such a groove 91, even the other end portion 76 of the protector 15B and Puraguhabu 8B rod-shaped member 73 when disengaged of a structure as to slightly protrude from the protector 15B, the projecting portion it can be withdrawn through the grooves 91. なお、この溝方式は前述の第1乃至第3実施形態でも採用可能であることは言うまでもない。 Needless to say, the groove system can be adopted in the first to third embodiments described above. 【0070】また、図25のように棒状部材突出部との係止部を凹部92に形成してもよく、さらに前述の図2 [0070] In addition, it may be formed in the recess 92 of the engaging portion of the rod member projecting portion as shown in FIG. 25, further described above Figure 2
4の如くプラグハブ8Bの開口端面より凹部92に連なる軸方向の溝91を形成してもよい。 4 As may form an axial groove 91 continuous to the recess 92 from the opening end surface of Puraguhabu 8B. なお、この係止部を凹部92とする方式は前述の第1乃至第3実施形態でも採用可能であることは言うまでもない。 It goes without saying this method the locking portion and the recess 92 can be adopted in the first to third embodiments described above. 【0071】また、図26のように棒状部材突出部との係止部を環状凹部92Aに形成してもよく、さらにプラグハブ8Bの開口端面より環状凹部92Aに連なる環状切り欠き溝91Aを形成してもよい。 [0071] Further, the engaging portion of the rod member projecting portion may be formed in an annular recess 92A, further annular cutout forms a groove 91A continuous from the opening end surface of Puraguhabu 8B to annular recess 92A as shown in FIG. 26 it may be. なお、この係止部を環状凹部92Aとする方式および環状凹部92Aに連なる環状切り欠き溝91Aを形成する方式は前述の第1 The first method described above for forming the annular cutout groove 91A continuous with the locking portion in scheme and the annular recess 92A and the annular recess 92A
乃至第3実施形態でも採用可能であることは言うまでもない。 Or it is needless to say that also employed in the third embodiment. 【0072】なお、前述の各実施形態では本発明をカテーテルハブにプラグとクランピングチューブを介してカテーテルを取り付けてなる外針(一般に透析に用いられる)に用いたものを例に挙げて説明したが、これに限るものでなく、プラグとクランピングチューブを有していない他の外針にもハブ付きプラグを設けることで本発明を適用できることは言うまでもない。 [0072] Incidentally, it was described as an example that used for the outer needle made by attaching the catheter through the plug and clamping tube catheter hub present invention in the above-described embodiments (commonly used for dialysis) but not limited to this, it goes without saying that the present invention can be applied by providing a hub with plugs to other outer needle having no plug and clamping tube. 【0073】 【発明の効果】以上述べたように、請求項1の発明によれば、外針の後端を密閉する感染症防止用のハブ付きプラグを介して、先端が大径の段付き針体を有する内針を取付け、内針の針基とプラグとの間の針体の小径軸部には、針体の先端大径部を覆うことのできる長さを有する保護具を摺動自在に取り付け、保護具には、穿刺時に保護具をプラグハブに係止させ、外針からの内針抜去により針体先端大径部が保護具内腔に収容された時に保護具とプラグハブとの係合を解くとともに、保護具内腔の針体前方を遮蔽する保護具による遮蔽手段を設けたので、 [0073] As described above, according to the present invention, According to the present invention, through a hub with plug for infection prevention for sealing the rear end of the outer needle, with the distal end of the large diameter stage attaching the inner needle having a needle body, the small diameter portion of the needle body between the needle base and the plug of the inner needle, sliding the protector having a length capable of covering the front end large diameter portion of the needle body mounted for, the protector, the protector when puncturing is engaged in Puraguhabu, by the inner needle pulled out from the outer needle and protective equipment and Puraguhabu when needle body distal large diameter portion is housed in the protection lumen together to disengage, is provided with the shielding means due protection to shield the needle body forward protection lumen,
医療関係者や医療廃棄物の処理にあたる作業員に対する針刺し事故を防止でき、かつ感染症を防止することができた。 It is possible to prevent accidental needle sticks with respect to the processing corresponding to workers of medical personnel and medical waste, and were able to prevent the infection. さらに、医療関係者にとってはこれまでの手技と同様の操作でよく、使用感に違和感がなく、使い勝手がよい留置針が得られた。 Furthermore, better in the same manner as the previous procedure for the medical personnel, there is no discomfort feeling, good usability indwelling needle is obtained. 【0074】また、請求項2の発明によれば、保護具本体の先端部に外周面から軸線交差方向に凹部または貫通孔を形成して、外周側から凹部または貫通孔内にストッパ部材及び圧縮ばねを挿入設置できるようにしたので、 [0074] According to the invention of claim 2, protection by forming a recess or a through hole in axial cross direction from the outer peripheral surface at the tip portion of the main body, the stopper member and the compression in the recess or the through-hole from the outer periphery since such springs can insert installation,
製作が容易となった。 Production has become easy. 【0075】また、請求項3の発明によれば、プラグハブの先端部に、カテーテルハブに設けた雄ねじと螺合可能な雌ねじを形成するとともに、プラグハブの後端部に、保護具本体の先端部を収容可能な保護具収容部を設けて、保護具収容部に、ストッパ部材突出部との係止部を形成したので、外針と内針の組付作業が容易となった。 [0075] According to the invention of claim 3, the distal end of the Puraguhabu, to form a male thread and can be screwed an internal thread provided in the catheter hub, the rear end portion of the Puraguhabu, the tip of the protector body provided protection accommodating portion capable of containing, the protector housing section, since the formation of the engagement portion of the stopper member projecting portion, working with the outer needle and the inner needle assembly becomes easy. 【0076】また、請求項4の発明によれば、内針の針基の先端に、保護具本体の後端部を収容可能なハブを設けたので、穿刺から内針抜去に至るまで、保護具の本体後端部が医療関係者に触れることがなくなり、内針抜去時に針基と共に保護具の本体後端部が誤って握られてプラグハブから保護具が無理矢理引き抜かれることもなかった。 [0076] According to the invention of claim 4, the tip of the needle base of the inner needle, is provided with the protective equipment can accommodate hub rear end portion of the body, up to the inner needle removed from the puncture, protective prevents the body rear end part of the sushi touches the medical personnel protection grasped by the body rear end portion of the protective equipment with hub when the inner needle removed accidentally from Puraguhabu did not also be pulled out forcibly. 【0077】請求項5の発明によれば、外針の後端を密閉する感染症防止用のハブ付きプラグを介して、基本的にストレート状の針体を有する内針を取付け、内針の針基とプラグとの間の針体の軸部には、針体の先端部を覆うことのできる長さを有する保護具を摺動自在に取り付け、保護具には、穿刺時に保護具をプラグハブに係止させ、外針からの内針抜去により針体先端部が保護具内腔に収容された時に保護具とプラグハブとの係合を解くとともに、保護具内の針体をラッチして該針体に対する該保護具の位置を固定する保護具固定手段を設けたので、 [0077] According to the invention of claim 5, through a hub with plug for infection prevention for sealing the rear end of the outer needle, essentially attach the inner needle having a straight needle body, the inner needle the shaft portion of the needle body between the hub and the plug, slidably mounted protective equipment having a length capable of covering the tip of the needle body, the protector, Puraguhabu protective equipment during puncture engaged thereby locked in, along with solving the engagement of the protective equipment and Puraguhabu by the inner needle pulled out from the outer needle when the needle body distal portion is housed protection lumen latches needle body in respirator said is provided with the protective equipment fixing means for fixing the position of the guard relative to the needle body,
医療関係者や医療廃棄物の処理にあたる作業員に対する針刺し事故を防止でき、かつ感染症を防止することができた。 It is possible to prevent accidental needle sticks with respect to the processing corresponding to workers of medical personnel and medical waste, and were able to prevent the infection. さらに、医療関係者にとってはこれまでの手技と同様の操作でよく、使用感に違和感がなく、使い勝手がよい留置針が得られた。 Furthermore, better in the same manner as the previous procedure for the medical personnel, there is no discomfort feeling, good usability indwelling needle is obtained. 【0078】また、請求項6の発明によれば、保護具固定手段を、針体の先端部外周に形成した所定幅のリング状溝と、一端側がリング状溝にのみ嵌入可能なスリットを有する幅広部、他端側がこの幅広部の中央部から延出する幅狭片に形成され、保護具本体に設けた孔内に挿入されて幅広部のスリットの開口を針体の軸部に跨らせた状態で、かつ幅狭片の先端が保護具本体の孔より外方に突出可能に設置されたプレートからなるラッチ部材と、 [0078] According to the invention of claim 6, protective equipment fixing means comprises a ring-shaped groove of a predetermined width formed on the tip end outer periphery of the needle body, one end of the slit can be fitted only in a ring-shaped groove wide portion, the other end side is formed narrower strips extending from the central portion of the wide portion, protectors are inserted into provided within holes in the body span the opening of the wide portion of the slit the shaft of the needle body a latch member in the state, and the tip of the narrow piece consists can project the installed plate outward from the hole of the protector body was,
保護具本体の孔の開口部に設けたばね座とラッチ部材の幅広部との間に配設されて、ラッチ部材を常時針体ラッチ方向に付勢する付勢手段と、ラッチ部材の幅狭片の突出部が嵌入可能にプラグハブに形成された係止部と、から構成したので、内針抜去時にラッチ部材により針体を確実に拘束することができた。 Is disposed between the wide portion of the spring seat and the latch member provided in the opening of the protector body bore, and biasing means for biasing the latch member to always needle body latch direction, the narrow strip of the latch member and protrusion fitted possible locking formed Puraguhabu part, since it is configured from, it was possible to reliably restrain the needle body by the latch member when the inner needle removed. 【0079】また、請求項7の発明によれば、保護具本体を二重筒から構成して、その内筒の後端部に軸線交差方向の貫通孔を設けるとともに、その外筒の前記貫通孔に対応する位置に膨出部を形成し、かつ膨出部に前記貫通孔に連通する凹部を外周面から軸線交差方向に形成して、外周側から凹部内にラッチ部材及び圧縮ばねを挿入設置できるようにしたので、製作が容易となった。 [0079] According to the invention of claim 7, the protection body constitutes a double cylinder, provided with an axis intersecting the direction of the through hole in the rear end portion of the inner tube, the penetration of the outer cylinder the bulged portion is formed at a position corresponding to the hole, and formed from the outer peripheral surface of the recess communicating with the through hole in the bulging portion in the axial cross-direction, inserting the latch member and the compression spring into the recess from the outer peripheral side because to be able to set up, production has become easy. 【0080】また、請求項8の発明によれば、プラグハブの先端部に、カテーテルハブに設けた雄ねじと螺合可能な雌ねじを形成するとともに、プラグハブの後端部に、保護具本体をほぼ収容可能な保護具収容部を設け、 [0080] According to the invention of claim 8, housed in the distal end portion of the Puraguhabu, to form a male thread and can be screwed an internal thread provided in the catheter hub, the rear end portion of the Puraguhabu, substantially the protector body the provided protection available equipment accommodating portion,
保護具収容部に、ラッチ部材突出部との係止部を形成したので、外針と内針の組付作業が容易となり、さらに穿刺から内針抜去に至るまで、保護具が医療関係者に触れることがなくなり、内針抜去時に針基と共に保護具が誤って握られてプラグハブから保護具が無理矢理引き抜かれることもなかった。 The protector housing section, so to form a locking portion of the latch member projection portion, working with the outer needle and the inner needle assembly is facilitated, up to the inner needle removed from further puncture, protective equipment medical personnel touching is eliminated, protection from Puraguhabu grasped protection accidentally with the needle hub when the inner needle withdrawal was not also be pulled out forcibly. 【0081】また、請求項9の発明によれば、針体先端部のリング状溝の深さを、針体肉厚の10〜70%に設定したので、針体の製作が容易となり、大量生産およびコスト低減に寄与することができた。 [0081] According to the invention of claim 9, the depth of the ring-shaped groove of the needle body tip, since the set 10 to 70% of the needle body thickness, it is easy to manufacture the needle body, mass It could contribute to production and cost reduction. 【0082】請求項10の発明によれば、外針の後端を密閉する感染症防止用のハブ付きプラグを介して、先端が大径軸部、後端側がこの大径軸部の断面エリア内に形成される異形軸部に設けられた針体を有する内針を取付け、内針の針基とプラグとの間の異形軸部には、針体の大径軸部を覆うことのできる長さを有する保護具をスプライン係合させて取り付け、保護具には、保護具には、 [0082] According to the invention of Claim 10, via a hub with plug for infection prevention for sealing the rear end of the outer needle, the tip is large-diameter shaft portion, the rear end section area of ​​the large diameter shaft portion attaching the inner needle having a needle body provided in profiled shaft portion formed within, the profiled shaft between the needle base and the plug of the inner needle, capable of covering the large diameter shaft portion of the needle body mounting splined engaged protective equipment having a length, the protector, the protector,
穿刺時に保護具をプラグハブに係止させ、外針からの内針抜去により針体先端大径軸部が保護具内腔に収容された時に保護具とプラグハブとの係合を解くとともに、保護具内の針体と係合して針体に対する保護具の軸方向位置を固定する保護具固定手段を設けたので、医療関係者や医療廃棄物の処理にあたる作業員に対する針刺し事故を防止でき、かつ感染症を防止することができた。 To engage with the Puraguhabu protective equipment during puncture, with disengaging the protection and Puraguhabu when needle body distal large diameter portion by the inner needle pulled out from the outer needle is accommodated in protection lumen protection is provided with the protective equipment fixing means for fixing the axial position of the guard relative to the needle body and engaged with the needle body of the inner, it prevents accidental needle sticks for the workers falls processing medical personnel and medical waste, and It was able to prevent the infection. さらに、医療関係者にとってはこれまでの手技と同様の操作でよく、使用感に違和感がなく、使い勝手がよい留置針が得られた。 Furthermore, better in the same manner as the previous procedure for the medical personnel, there is no discomfort feeling, good usability indwelling needle is obtained. 【0083】また、請求項11の発明によれば、保護具固定手段を、針体の先端部外周に形成した穴と、保護具本体の先端部に外周面から軸線交差方向に形成されて、 [0083] According to the invention of claim 11, protective equipment fixing means, a hole formed in the distal end outer periphery of the needle body, is formed in the axial cross-direction from the outer peripheral surface at the tip portion of the protector body,
針体が挿通される内腔をエリア内に納める凹部または貫通孔と、ガイド機能およびばね座機能をもつフランジを有し、一端部が前記穴に嵌入可能に保護具本体の凹部または貫通孔内に挿入された棒状部材と、棒状部材の他端部の案内機能を有し、この他端部の先端が外方に突出可能に前記凹部または貫通孔の開口部に設けたばね座と、 A recess or through-hole pay lumen area the needle body is inserted, the guide function and having a flange with a spring seat function, one end recess of the protective equipment main body can be fitted into the hole or through hole and the rod member inserted into, has a guide function of the other end of the rod, a spring seat the tip of the other end portion is provided in the opening portion of the can project the recess or the through-hole outward,
このばね座と棒状部材のフランジの間に配設されて、棒状部材を常時穴嵌入方向に付勢する付勢手段と、棒状部材他端部の突出部が嵌入可能にプラグハブに形成された係止部と、から構成したので、製作が容易となった。 The spring seat and is disposed between the flange of the rod-like member, and biasing means for biasing the rod-like member to always hole fitting direction, engaging the projecting portion of the rod member other end portion is formed on Puraguhabu possible fit and a stop portion, since it is configured from, production has become easy. 【0084】また、請求項12の発明によれば、プラグハブの先端部に、カテーテルハブに設けた雄ねじと螺合可能な雌ねじを形成するとともに、プラグハブの後端部に、保護具本体の先端部を収容可能な保護具収容部を設け、保護具収容部に、棒状部材突出部との係止部を形成したので、外針と内針の組付作業が容易となった。 [0084] According to the invention of claim 12, the distal end of Puraguhabu, to form a male thread and can be screwed an internal thread provided in the catheter hub, the rear end portion of the Puraguhabu, the tip of the protector body the protector housing section capable of housing a is provided, the protection housing portion, so to form an engagement portion of a rod member projecting portion, working with the outer needle and the inner needle assembly becomes easy.

【図面の簡単な説明】 【図1】本発明の第1実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用前の状態を示す断面図である。 It is a sectional view showing an BRIEF DESCRIPTION OF THE DRAWINGS [Figure 1] a state before use of the infection prevention and needle stick accident prevention function indwelling needle according to a first embodiment of the present invention. 【図2】図1の状態の外針と内針を分離して示す断面図である。 2 is a sectional view showing the outer needle and the inner needle is separated in the state of FIG. 【図3】第1実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用後に外針から内針を抜去する時の状態を示す断面図である。 3 is a cross-sectional view showing a state in which pulling the inner needle out of the outer needle after use of the infection prevention and needle stick accident prevention function indwelling needle according to the first embodiment. 【図4】第1実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の外針から内針を抜去した後の針体先端部が保護されている状態の内針を示す断面図である。 4 is a cross-sectional view showing the inner needle in a state where the needle body tip after pulling the inner needle out of the outer needle infections prevention and needle stick accident prevention function indwelling needle according to the first embodiment is protected it is. 【図5】第1実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針のストッパ部材による保護具内腔遮蔽前(a)と遮蔽後(b)の状態を示す保護具遮蔽手段部の断面図である。 [5] protector shield means unit showing a state of the first embodiment infection prevention and needle stick accident prevention function indwelling needle of the stopper member protection lumen shielding before due according to the (a) and after the shield (b) it is a cross-sectional view of. 【図6】第1実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の内針抜去時の動作の説明図である。 6 is an explanatory view of the operation when the inner needle removed infection prevention and needle stick accident prevention function indwelling needle according to the first embodiment. 【図7】本発明の第2の実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用前の状態を示す断面図である。 7 is a cross-sectional view showing a state before use of the infection prevention and needle stick accident prevention function indwelling needle according to a second embodiment of the present invention. 【図8】図7の状態の外針と内針を分離して示す断面図である。 8 is a sectional view showing the outer needle and the inner needle is separated in the state of FIG. 【図9】第2実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用後に外針から内針を抜去した後の針体先端部が保護されている状態の内針を示す断面図である。 It shows the Figure 9 inner needle in a state where the needle body tip after pulling the inner needle out of the outer needle after use of the infection prevention and needle stick accident prevention function indwelling needle according to the second embodiment is protected it is a cross-sectional view. 【図10】本発明の第3の実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用前の状態を示す断面図である。 10 is a cross-sectional view showing a state before use of the third infection prevention and needle stick accident prevention function indwelling needle according to a third embodiment of the present invention. 【図11】図10の状態の外針と内針を分離して示す断面図である。 11 is a sectional view showing in isolation the outer needle and the inner needle in the state of FIG. 10. 【図12】第3実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用後に外針から内針を抜去する時の状態を示す断面図である。 12 is a sectional view showing a state in which pulling the inner needle out of the outer needle after use of the infection prevention and needle stick accident prevention function indwelling needle according to a third embodiment. 【図13】第3実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の外針から内針を抜去した後の針体先端部が保護されている状態の内針を示す断面図である。 Figure 13 is a sectional view showing the inner needle in a state where the needle body tip after pulling the inner needle out of the outer needle infections prevention and needle stick accident prevention function indwelling needle according to the third embodiment is protected it is. 【図14】第3実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針のラッチ部材による針体ラッチ前(a)とラッチ後(b)の状態を示す保護具固定手段部の断面図である。 FIG. 14 is a cross-sectional protection fixing means portion showing a state of the third embodiment the needle body latch before by infection prevention and needle stick accident prevention function indwelling needle of the latch member according to the embodiment (a) and after the latch (b) it is a diagram. 【図15】第3実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の内針抜去時の動作の説明図である。 15 is an explanatory view of the operation when the inner needle removed infection prevention and needle stick accident prevention function indwelling needle according to a third embodiment. 【図16】本発明の第4の実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用前の状態を示す断面図である。 16 is a cross-sectional view showing a state before use of the fourth infections prevention and needle stick accident prevention function indwelling needle according to a third embodiment of the present invention. 【図17】図16の状態の外針と内針を分離して示す断面図である。 17 is a sectional view showing in isolation the outer needle and the inner needle in the state of FIG. 16. 【図18】第4実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の使用後に外針から内針を抜去する時の状態を示す断面図である。 18 is a sectional view showing a state in which pulling the inner needle out of the outer needle after use of the infection prevention and needle stick accident prevention function indwelling needle according to a fourth embodiment. 【図19】第4実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の外針から内針を抜去した後の針体先端部が保護されている状態の内針を示す断面図である。 Figure 19 is a cross-sectional view showing the inner needle in a state where the needle body tip after pulling the inner needle out of the outer needle infections prevention and needle stick accident prevention function indwelling needle according to a fourth embodiment is protected it is. 【図20】第4実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の棒状部材による針体固定前(a)と固定後(b)の状態を示す保護具固定手段部の断面図である。 Figure 20 is a cross-sectional protection fixing means portion showing a state of infection prevention and needle body fixed before by the rod-shaped member of needlestick accident prevention function indwelling needle (a) and after fixing (b) according to the fourth embodiment it is a diagram. 【図21】第4実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の内針抜去時の動作の説明図である。 21 is an explanatory view of the operation when the inner needle removed infection prevention and needle stick accident prevention function indwelling needle according to a fourth embodiment. 【図22】第4実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の針体異形軸部の形状例を示す説明図である。 22 is an explanatory diagram showing an example of the shape of the needle body profiled shaft of the infectious diseases prevention and needle stick accident prevention function indwelling needle according to a fourth embodiment. 【図23】第1、第2、第4施形態に係る感染症防止機能および針刺し事故防止機能付き留置針の保護具固定手段設置部の変形例を示す断面図である。 [23] The first, second, is a sectional view showing a modification of the protection fixing means mounting portion infections prevention and needle stick accident prevention function indwelling needle according to a fourth facilities embodiment. 【図24】第1乃至第4実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針のプラグハブの第1の変形例を示す側面断面図およびA−A線矢視断面図である。 24 is a side sectional view and A-A sectional view taken along line showing a first modification of the Puraguhabu the first to infection prevention and needle stick accident prevention function indwelling needle according to a fourth embodiment. 【図25】第1乃至第4実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針のプラグハブの第2の変形例を示す側面断面図およびB−B線矢視断面図である。 Figure 25 is a side sectional view and sectional view taken along line B-B showing a second modification of Puraguhabu infection prevention and needle stick accident prevention function indwelling needle according to the first to fourth embodiments. 【図26】第1乃至第4実施形態に係る感染症防止機能および針刺し事故防止機能付き留置針のプラグハブの第3の変形例を示す側面断面図およびC−C線矢視方向よりみた正面図である。 Figure 26 is a front view viewed from the first to third side sectional view and a view taken along line C-C direction showing a modified example of Puraguhabu infection prevention and needle stick accident prevention function indwelling needle according to the fourth embodiment it is. 【符号の説明】 1 外針2 カテーテルハブ4 カテーテル5,5A,5B 感染症防止用プラグ6 雄ねじ7 雌ねじ8,8A,8B プラグハブ9,9A,9B 係止孔(係止部) 11,11A,11B 内針13 段付き針体13A ストレート状の針体13B,13C,13D 針体14 針基15,15A,15B 保護具16 針体の先端大径部16B 針体の大径軸部17 針体の小径軸部17B,17C,17D 針体の異形軸部21 保護具内腔22 凹部23 保護具遮蔽手段24 ストッパ部材の頭部25 凹部の底部26 凹部の開口部27 ストッパ部材28 ストッパ部材の茎部29,63 ガイド用孔(孔) 31 茎部の先端32 蓋部材(ばね座) 33,33A,33B 圧縮ばね(付勢手段) 41 内針針基のハブ51 内筒52 内筒の貫通孔5 [Reference Numerals] 1 outer needle 2 the catheter hub 4 catheter 5, 5A, 5B infection prevention plug 6 male thread 7 the internal thread 8, 8A, 8B Puraguhabu 9, 9A, 9B locking hole (locking portion) 11, 11A, 11B the needle 13 stepped needle body 13A straight needle body 13B, 13C, 13D needle body 14 needle hub 15, 15A, large-diameter shaft portion 17 the needle body of the tip large diameter part 16B needle body 15B protector 16 needles small diameter portion 17B, 17C, stems 17D needle of profiled shaft portion 21 protection lumen 22 recess 23 protection shield means 24 a stopper member of the head 25 the recess in the bottom 26 recess of the opening 27 the stopper member 28 stopper member parts 29,63 guide hole (hole) 31 stem tip 32 lid member (spring washer) 33 and 33A, 33B compression spring (urging means) 41 Uchihariharimoto through hole of the inner hub 51 cylinder 52 inner cylinder of 5 外筒55 外筒の凹部56 保護具固定手段57 リング状溝58 ラッチ部材のスリット59 ラッチ部材の幅広部61 ラッチ部材の幅狭片62 外筒凹部の底部(ばね座) 64 ラッチ部材71 針体の穴72 保護具固定手段73 棒状部材74 フランジ81 貫通孔82 内向きフランジ(ばね座) 92 凹部(係止部) 92A 環状凹部(係止部) Narrow strip 62 bottom of the outer cylinder recess of the wide portion 61 latch member slit 59 latch member recesses 56 protector fixing means 57 ring-shaped groove 58 the latch member of the outer tube 55 outer cylinder (spring seat) 64 latch member 71 the needle body holes 72 protection fixing means 73 the rod-shaped member 74 the flange 81 through holes 82 inward flange (spring seat) 92 recess (engaging portion) 92A annular recess (engaging portion)

───────────────────────────────────────────────────── フロントページの続き (72)発明者 大井川 淳 東京都渋谷区千駄ケ谷五丁目27番7号 日 本ブランズウイックビル 日本シャーウッ ド株式会社内Fターム(参考) 4C066 AA10 BB01 CC01 FF04 GG20 KK06 KK19 LL30 MM05 4C167 AA02 AA21 BB01 BB70 CC08 ────────────────────────────────────────────────── ─── front page of the continuation (72) inventor Atsushi Oi Shibuya-ku, Tokyo Sendagaya chome No. 27 No. 7 Date. this Brunswick building Japan Shau' de Co., Ltd. in the F-term (reference) 4C066 AA10 BB01 CC01 FF04 GG20 KK06 KK19 LL30 MM05 4C167 AA02 AA21 BB01 BB70 CC08

Claims (1)

  1. 【特許請求の範囲】 【請求項1】 カテーテルハブにカテーテルを取り付けてなる外針と、 前記外針のカテーテルハブに取り付けられて該カテーテルハブの後端を密閉する感染症防止用のハブ付きプラグと、 前記プラグを通して前記外針の内腔を貫通する先端が大径の段付き針体および該針体の後端を固定した針基からなる内針と、 前記針体の先端大径部を覆うことのできる長さを有し、 An outer needle made by attaching the catheter to the Claims 1 catheter hub, hub attachment plug for infection prevention is attached to the outer needle of the catheter hub to seal the rear end of the catheter hub When the inner needle tip through the lumen of the outer needle through the plug is made of needle hub fixed to the rear end of the stepped needle body and needle of large diameter, a distal end large diameter portion of the needle body has a length capable of covering,
    前記内針の針基と前記プラグとの間に配置され、前記針体の小径軸部に摺動自在に嵌合設置された保護具と、 前記保護具に装着され、穿刺時に該保護具を前記プラグハブに係止させ、外針からの内針抜去により針体先端大径部が保護具内腔に収容された時に該保護具と該プラグハブとの係合を解くとともに、前記保護具内腔の針体前方を遮蔽する保護具遮蔽手段と、を備えたことを特徴とする感染症防止機能および針刺し事故防止機能付き留置針。 Is disposed between the plug and the needle hub of the inner needle, and slidably fitted the installed protection to the small-diameter shaft portion of the needle body, said mounted on protective equipment, the protective equipment during puncture It is engaged in the Puraguhabu, with disengaging the said protection and the Puraguhabu when the needle body distal end large diameter portion by the inner needle pulled out from the outer needle housed protection lumen, the protection lumen infection prevention and needle stick accident prevention function indwelling needle to the protector shield means for shielding the needle body forward, characterized by comprising a. 【請求項2】 保護具遮蔽手段は、 保護具本体の先端部に外周面から軸線交差方向に形成されて、その針体が挿通される内腔をエリア内に納める凹部または貫通孔と、 前記保護具本体の針体が挿通される内腔を遮蔽可能な大きさの頭部を有し、前記保護具本体の凹部または貫通孔内に挿入されて設置されたポペット状のストッパ部材と、 前記ポペット状ストッパ部材の茎部の案内機能を有し、 2. A protection shielding means is formed in the axial cross-direction from the outer peripheral surface at the tip portion of the protector body, a recess or through-hole pay lumen area where the needle body is inserted, the has a lumen shielding possible size of the head of the needle body protection body is inserted, and the poppet-like stopper member installed is inserted into the recess or through hole of the protector body, the has a guide function of the stem of the poppet-like stopper member,
    該茎部の先端が外方に突出可能に前記凹部または貫通孔の開口部に設けたばね座と、 前記ばね座とストッパ部材の頭部との間に配設されて、 A spring seat the tip of 該茎 portion is provided in the opening portion of the can project the recess or the through-hole outward, is disposed between the head of the spring seat and the stopper member,
    該ストッパ部材を常時内腔閉塞方向に付勢する付勢手段と、 前記ストッパ部材の茎部の突出部が嵌入可能にプラグハブに形成された係止部と、から構成されてなることを特徴とする請求項1記載の感染症防止機能および針刺し事故防止機能付き留置針。 And wherein a biasing means for biasing constantly lumen occlusion direction the stopper member, and a locking portion projecting portions of the stem portion of the stopper member is formed on Puraguhabu possible fitted, to become consist infection prevention and needle stick accident prevention function indwelling needle according to claim 1. 【請求項3】 プラグハブの先端部に、カテーテルハブに設けた雄ねじと螺合可能な雌ねじが形成されているとともに、プラグハブの後端部に、保護具本体の先端部を収容可能な保護具収容部が設けられ、該保護具収容部に、ストッパ部材突出部との係止部が形成されていることを特徴とする請求項2記載の感染症防止機能および針刺し事故防止機能付き留置針。 The tip of 3. Puraguhabu, with external thread and can be screwed an internal thread provided in the catheter hub is formed, the rear end portion of the Puraguhabu, can accommodate protector housing a tip portion of the protector body parts are provided on the protector housing section, claim 2 infection prevention and needle stick accident prevention function indwelling needle, wherein the engagement portion of the stopper member projecting portion is formed. 【請求項4】 内針の針基の先端に、保護具本体の後端部を収容可能なハブを設けたことを特徴とする請求項3 Wherein in the tip of the needle hub of the needle, according to claim 3, characterized in that a housing capable hub rear end portion of the protective equipment main body
    記載の感染症防止機能および針刺し事故防止機能付き留置針。 Infection prevention and needle stick accident prevention function with indwelling needle described. 【請求項5】 カテーテルハブにカテーテルを取り付けてなる外針と、 前記外針のカテーテルハブに取り付けられて該カテーテルハブの後端を密閉する感染症防止用のハブ付きプラグと、 前記プラグを通して前記外針の内腔を貫通する基本的にストレート状の針体および該針体の後端を固定した針基からなる内針と、 前記針体の先端部を所定長さ覆うことのできる長さを有し、前記内針の針基と前記プラグとの間に配置され、前記針体の軸部に摺動自在に嵌合設置された保護具と、 前記保護具に装着され、穿刺時に該保護具を前記プラグハブに係止させ、外針からの内針抜去により針体先端部が保護具内腔に収容された時に該保護具と該プラグハブとの係合を解くとともに、保護具内の前記針体をラッチして該針体に対する該保護具の位置 An outer needle made by attaching the catheter to 5. A catheter hub, and the hub with plug for infection prevention is attached to the outer needle of the catheter hub to seal the rear end of the catheter hub, the through the plug basically the internal needle consisting of the straight-needle and needle hub rear end to the fixed and of the needle body, the length capable of covering a predetermined length of the distal portion of said needle body extending through the lumen of the outer needle has, disposed between the plug and the needle hub of the inner needle, and slidably fitted the installed protection on the shaft of the needle body, is mounted on the guard, the at puncture the protector is engaged with the Puraguhabu, with disengaging the said protection and the Puraguhabu when needle body distal portion by the inner needle pulled out from the outer needle is accommodated in protection lumen, in protective equipment position of the protection against needle body by latching the needle body 固定する保護具固定手段と、を備えたことを特徴とする感染症防止機能および針刺し事故防止機能付き留置針。 Infection prevention and needle stick accident prevention function indwelling needle to the protector fixing means, comprising the fixed. 【請求項6】 前記保護具固定手段は、 針体の先端部外周に形成した所定幅のリング状溝と、 一端側が前記リング状溝にのみ嵌入可能なスリットを有する幅広部、他端側が該幅広部の中央部から延出する幅狭片に形成され、保護具本体に設けた孔内に挿入されて前記幅広部のスリットの開口を前記針体の軸部に跨らせた状態で、かつ前記幅狭片の先端が前記保護具本体の孔より外方に突出可能に設置されたプレートからなるラッチ部材と、 前記保護具本体の孔の開口部に設けたばね座と前記ラッチ部材の幅広部との間に配設されて、該ラッチ部材を常時針体ラッチ方向に付勢する付勢手段と、 前記ラッチ部材の幅狭片の突出部が嵌入可能にプラグハブに形成された係止部と、から構成されてなることを特徴とする請求項5記載の感染症防止 Wherein said protection member fixing means comprises a ring-shaped groove of a predetermined width formed on the tip end outer periphery of the needle body, the wide portion has one end with a slit which can be fitted only to the ring-shaped groove, the other end the is formed narrower strips extending from the central portion of the wide portion, protectors are inserted into provided within holes in the body opening of the slit of the wide portion in a state where the span on the shaft of the needle body, and wider the narrow piece and a latch member formed of a can project the installed plates outward from tip hole of the protector body, the said protection spring seat provided in the opening of the main body of the hole latch member It is arranged between the parts, and biasing means for biasing the latch member to always needle body latch direction, locking portion projecting portions of the narrow strip of the latch member is formed on Puraguhabu possible fit When, according to claim 5, characterized by being composed of infection prevention 能および針刺し事故防止機能付き留置針。 Ability and needlestick accident prevention function with indwelling needle. 【請求項7】 保護具本体は二重筒からなり、その内筒の後端部には、その針体が挿通される内腔をエリア内に納める軸線交差方向の貫通孔が形成されているとともに、その外筒の前記貫通孔に対応する位置には、該貫通孔よりも軸線方向の空間幅を大きく設定されて該貫通孔に連通する凹部がその外周面から軸線交差方向に形成されており、 前記ラッチ部材は、前記外筒の凹部および前記内筒の貫通孔内に挿入されて、その幅狭片の先端が前記外筒凹部の前記ばね座となる底部に設けた孔より外方に突出可能に設置されてなることを特徴とする請求項6記載の感染症防止機能および針刺し事故防止機能付き留置針。 7. A protector body is made of a double tube, the rear end of the inner cylinder, the through-hole in the axial cross-direction to pay lumen its needle body is inserted into the area is formed with its said through hole corresponding to the position of the outer cylinder is formed from the concave portion is the outer circumferential surface which communicates with the larger set space width in the axial direction in the through hole than the through hole in the axial cross-direction cage, the latch member is inserted into the outer cylinder recess and the through hole of the inner cylinder of, outwardly from its narrow piece hole tip is provided at the bottom serving as the spring seat of the outer cylinder recess infection prevention and needle stick accident prevention function indwelling needle according to claim 6, characterized in that is installed to be protruded. 【請求項8】 プラグハブの先端部に、カテーテルハブに設けた雄ねじと螺合可能な雌ねじが形成されているとともに、プラグハブの後端部に、保護具本体をほぼ収容可能な保護具収容部が設けられ、該保護具収容部に、ラッチ部材突出部との係止部が形成されていることを特徴とする請求項6又は請求項7記載の感染症防止機能および針刺し事故防止機能付き留置針。 The tip of 8. Puraguhabu, with external thread and can be screwed an internal thread provided in the catheter hub is formed, the rear end portion of the Puraguhabu, almost can accommodate protector accommodating portion protective equipment body provided, on the protection housing unit, according to claim 6 or claim 7 infection prevention and needle stick accident prevention function indwelling needle wherein the locking portion is formed with the latch member projecting portion . 【請求項9】 針体先端部のリング状溝の深さを、針体肉厚の10〜70%に設定したことを特徴とする請求項5乃至請求項8のいずれかに記載の感染症防止機能および針刺し事故防止機能付き留置針。 9. The depth of the ring-shaped groove of the needle body tip, infection according to any one of claims 5 to 8, characterized in that set to 10% to 70% of the needle body thickness prevention function and needle stick accident prevention function with indwelling needle. 【請求項10】 カテーテルハブにカテーテルを取り付けてなる外針と、 前記外針のカテーテルハブに取り付けられて該カテーテルハブの後端を密閉する感染症防止用のハブ付きプラグと、 先端が大径軸部、後端側が該大径軸部の断面エリア内に形成される異形軸部に設けられて前記プラグを通して前記外針の内腔を貫通する針体および該針体の後端を固定した針基からなる内針と、 前記針体の先端大径部を覆うことのできる長さを有し、 An outer needle made by attaching the catheter 10. A catheter hub, and the hub with plug for infection prevention is attached to the outer needle of the catheter hub to seal the rear end of the catheter hub, tip diameter shaft portion, the rear end side is fixed to the rear end of the needle body and needle member passing through the lumen of the outer needle through the plug provided on the profiled shaft portion formed in a cross-sectional area of ​​the large diameter shaft portion has an inner needle made of needle hub, a length capable of covering the front end large-diameter portion of the needle body,
    前記内針の針基と前記プラグとの間に配置され、前記針体の異形軸部にスプライン係合して嵌合設置された保護具と、 前記保護具に装着され、穿刺時に該保護具を前記プラグハブに係止させ、外針からの内針抜去により針体先端大径部が保護具内腔に収容された時に該保護具と該プラグハブとの係合を解くとともに、保護具内の前記針体と係合して該針体に対する該保護具の軸方向位置を固定する保護具固定手段と、を備えたことを特徴とする感染症防止機能および針刺し事故防止機能付き留置針。 Is disposed between the plug and the needle hub of the inner needle, said mating the installed protective equipment profiled shaft portion of the needle body spline engaged with, it is mounted on the protector, the protector when puncturing It was engaged with the Puraguhabu, with disengaging the said protection and the Puraguhabu when the needle body distal end large diameter portion by the inner needle pulled out from the outer needle housed protection lumen, in protective equipment the needle body engaging infection prevention and needle stick accident prevention function indwelling needle characterized by comprising a protective member fixing means for fixing the axial position of the protection against needle body. 【請求項11】 前記保護具固定手段は、 針体の先端部外周に形成した穴と、 保護具本体の先端部に外周面から軸線交差方向に形成されて、前記針体が挿通される内腔をエリア内に納める凹部または貫通孔と、 ガイド機能およびばね座機能をもつフランジを有し、一端部が前記穴に嵌入可能に前記保護具本体の凹部または貫通孔内に挿入された棒状部材と、 前記棒状部材の他端部の案内機能を有し、該他端部の先端が外方に突出可能に前記凹部または貫通孔の開口部に設けたばね座と、 前記ばね座と前記棒状部材のフランジの間に配設されて、該棒状部材を常時穴嵌入方向に付勢する付勢手段と、 前記棒状部材他端部の突出部が嵌入可能にプラグハブに形成された係止部と、から構成されてなることを特徴とする請求項10記載の感染症防 Wherein said protection member fixing means comprises a hole formed in the distal end outer periphery of the needle body, it is formed in the axial cross-direction from the outer peripheral surface at the tip portion of the protector body, among which the needle body is inserted a recess or through-hole pay lumen area guide function and having a flange with a spring seat feature, the rod-shaped member whose one end is inserted into the recess or through hole of the protector body so as to be fitted in the hole When, the bar has a guide function of the other end of the member, and a spring seat the tip of the other end portion is provided in the opening portion of the can project the recess or the through-hole outward, the rod-shaped member and the spring seat is disposed between the flanges, and biasing means for biasing the rod-shaped member to always hole insertion direction, and a locking portion protruding part of the rod-shaped member and the other end portion is formed on Puraguhabu possible fit, It infections proof of claim 10 wherein the comprising consist 止機能および針刺し事故防止機能付き留置針。 Stop function and needle stick accident prevention function with indwelling needle. 【請求項12】 プラグハブの先端部に、カテーテルハブに設けた雄ねじと螺合可能な雌ねじが形成されているとともに、プラグハブの後端部に、保護具本体の先端部を収容可能な保護具収容部が設けられ、該保護具収容部に、棒状部材突出部との係止部が形成されていることを特徴とする請求項11記載の感染症防止機能および針刺し事故防止機能付き留置針。 The distal end of 12. Puraguhabu, with external thread and can be screwed an internal thread provided in the catheter hub is formed, the rear end portion of the Puraguhabu, can accommodate protector housing a tip portion of the protector body parts are provided on the protector housing section, claim 11 infection prevention and needle stick accident prevention function indwelling needle, wherein the engagement portion is formed between the rod-like member projecting portion.
JP2002002995A 2002-01-10 2002-01-10 Indwelling needle with infectious disease preventing function and needle thrust accident preventing function Pending JP2003199822A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007136191A (en) * 2005-11-15 2007-06-07 Becton Dickinson & Co Needle shield interconnected to septum
WO2007122958A1 (en) * 2006-03-29 2007-11-01 Terumo Kabushiki Kaisha Protector
JP2008093184A (en) * 2006-10-12 2008-04-24 Nippon Sherwood Medical Industries Ltd Needlepoint protective implement
JP2011524184A (en) * 2007-12-21 2011-09-01 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company Tip shield having a plurality of gripping surfaces and protection components
JP2012521796A (en) * 2009-03-26 2012-09-20 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company Systems and methods for providing secure integrated catheter having a universal grip
JP2012521797A (en) * 2009-03-26 2012-09-20 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company With a universal grip, a system and method for providing a standard integrated catheter
CN104043154A (en) * 2014-06-30 2014-09-17 天津哈娜好医材有限公司 Dialysis remaining needle with switch
US8926563B2 (en) 2011-04-27 2015-01-06 Covidien Lp Safety IV catheter assemblies

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007136191A (en) * 2005-11-15 2007-06-07 Becton Dickinson & Co Needle shield interconnected to septum
WO2007122958A1 (en) * 2006-03-29 2007-11-01 Terumo Kabushiki Kaisha Protector
US8162904B2 (en) 2006-03-29 2012-04-24 Terumo Kabushiki Kaisha Needle protector
JP2008093184A (en) * 2006-10-12 2008-04-24 Nippon Sherwood Medical Industries Ltd Needlepoint protective implement
WO2008045530A3 (en) * 2006-10-12 2009-04-16 Tyco Healthcare Needle tip protector
US8939938B2 (en) 2006-10-12 2015-01-27 Covidien Lp Needle tip protector
JP2011524184A (en) * 2007-12-21 2011-09-01 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company Tip shield having a plurality of gripping surfaces and protection components
US8858503B2 (en) 2007-12-21 2014-10-14 Becton, Dickinson And Company Tip shield with gripping surfaces and guard features
JP2012521796A (en) * 2009-03-26 2012-09-20 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company Systems and methods for providing secure integrated catheter having a universal grip
JP2012521797A (en) * 2009-03-26 2012-09-20 ベクトン・ディキンソン・アンド・カンパニーBecton, Dickinson And Company With a universal grip, a system and method for providing a standard integrated catheter
US8926563B2 (en) 2011-04-27 2015-01-06 Covidien Lp Safety IV catheter assemblies
CN104043154A (en) * 2014-06-30 2014-09-17 天津哈娜好医材有限公司 Dialysis remaining needle with switch

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