JP2005000516A

JP2005000516A - Blood-collecting apparatus and blood sugar level meter

Info

Publication number: JP2005000516A
Application number: JP2003169362A
Authority: JP
Inventors: Kinji Nishimura; 金治西村; Hiroyuki Kato; 浩之加藤; Takeshi Kawamura; 剛河村
Original assignee: NISHITOMO KK
Current assignee: NISHITOMO KK
Priority date: 2003-06-13
Filing date: 2003-06-13
Publication date: 2005-01-06

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blood-collecting apparatus of which the operations for piercing and pulling back are simpler. <P>SOLUTION: This blood-collecting apparatus is equipped with a setting member 11, a launching member 41 and a piercing member 51. In this case, the setting member 11 is provided slidably in the piercing direction, and at the same time, is urged to the anti-piercing side, and also, can be fixed at a setting position which is located at a closest position to the piercing side. The launching member 41 is provided slidably in the piercing direction to the setting member 11, and at the same time, is urged to the piercing side, and can be fixed at a launching position located at a closest position to the anti-piercing side. The piercing member 51 can slide in the piercing direction to the setting member 11, and is moved to a pierceable position to the skin by the launching of the launching member 41 in the piercing direction when the setting member 11 is located at the setting position. By fixing the setting member 11 and the launching member 41 at the setting position and the launching position in advance, the piercing and the pulling back of the piercing member 51 are possible by a simple operation for releasing the fixation of them. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
この発明は、微量の血液を採取するための装置に関し、例えば、血糖値の測定のための採血に好適な採血装置に関する。
【０００２】
【従来の技術】
特定の血液成分を測定したい場合、例えば、血糖値などを測定する場合、極少量の血液を耳たぶや指先から採取することが一般的に行われている。インシュリン投与による治療を受ける糖尿病患者は、１日に複数回、血糖値を測定してインシュリンの投与量などを決定しているが、患者本人が行うことも多い。このため、簡便かつ肉体的および精神的苦痛が軽減されている採血装置が提案されている（例えば、特許文献１，２参照。）。
【０００３】
【特許文献１】
特開平８−８４７２１号公報
【特許文献２】
特開平７−２１３９２５号公報
【０００４】
【発明が解決しようとする課題】
これらの方法では、ばねや磁石の力を利用することで、繰返し所定の穿刺深さによる穿刺が可能である。また、穿刺で移動させた部材の引戻しによって採血装置が当てられた皮膚面と採血装置との間に形成される密閉状空間を負圧にして血液を吸収することができ、簡便な操作での採血が可能である。
ところで、これらの採血装置は、いずれも穿刺針と略同軸を成すスライド部材を採血者が穿刺方向に穿刺針を発射させるのに必要な応力を発生させるために所定長さだけ移動させなければならない。このため、スライド部材の押圧開始から穿刺針の穿刺までに時差があり、この間に精神的なストレスを感じるおそれがある。また、穿刺針を引戻すためにスライド部材を引き戻す場合、採血装置本体を皮膚に押し付けたまま、スライド部材にかけた押圧力を解放しなければならず、特に自分自身で片手で採血する場合には動作が複雑となるおそれがある。また、スライド部材の移動方向が穿刺針の移動方向と同じであるため、自分で測定する場合、自ら皮膚に突き刺すイメージとなりやすい。
【０００５】
そこで、本発明では、穿刺および引戻しのための操作がより単純な採血装置を提供することを課題とする。
また、本発明では、穿刺および引戻しのための操作がより単純な血糖値を測定できる血糖値計を提供することを課題とする。
【０００６】
【課題を解決するための手段】
上記課題を解決するため、交換可能な穿刺針を備える採血装置であって、前記穿刺針が皮膚へ穿刺されるときに、皮膚に当接される本体部と、本体部に対して穿刺方向にスライド可能に設けられるとともに反穿刺側に付勢され、且つ最も穿刺側に位置するセット位置に固定可能なセット部材と、前記セット部材に対して穿刺方向にスライド可能に設けられるとともに穿刺側に付勢され、且つ最も反穿刺側に位置する発射位置に固定可能な発射部材と、前記穿刺針を備え、前記セット部材に対して穿刺方向にスライド可能に設けられており、前記セット部材がセット位置にあるときに本体部より突出しない位置に保持可能とされ、且つ前記発射部材の穿刺方向への発射によって本体部より突出し皮膚に穿刺可能な位置に移動される、穿刺部材とを備える採血装置を提供する。
この採血装置によれば、本体部を皮膚に当接させた状態で、セット部材をセット位置へ固定し、発射部材を発射位置に固定して、発射部材の固定を解除することにより、穿刺部材が穿刺方向に移動されて穿刺針が皮膚に穿刺される。また、セット部材の固定を解除することにより、セット部材は付勢によって反穿刺方向に移動し、このセット部材に保持されている穿刺部材も反穿刺方向に移動して、穿刺針が皮膚から引き抜かれる。この装置では、セット部材はセット位置に、発射部材は発射位置に、それぞれ固定できるため、予めこの位置に設定しておき、固定を解除する操作だけで穿刺針を皮膚に穿刺できる。したがって、皮膚に当接させた状態での操作は、発射部材およびセット部材の固定解除だけであり、これらの移動は穿刺方向に関係なく設定でき、また、その操作量も穿刺のための移動に関係なく設定できる。したがって、皮膚へ当接させた後の操作をより簡単にすることができる。
採血装置は、セット部材のセット位置への固定を解除するための移動可能な第１の解除部材と、前記発射部材の発射位置への固定を解除するための移動可能な第２の解除部材とを備えている構成とすることができる。これにより、セット部材または発射部材に直接触れないため、より簡単な操作とすることができる。例えば、第１および第２の解除部材は、弾性保持されていて所定深さだけ移動するボタン式にすることが可能であり、より操作距離を短くして、操作しやすくすることができる。これにより、穿刺操作にかかる精神的苦痛が軽減される。
この採血装置では、第１の解除部材と第２の解除部材とは、固定解除のための移動方向が同一となるように一体化されていると、より少ない操作で穿刺針の穿刺と引戻しが可能となり、好ましい。この場合、より好ましくは、第１の解除部材によるセット部材の固定の解除に先んじて第２の解除部材による発射部材の固定の解除が成される構成であると、穿刺針の穿刺と、後続する穿刺針の引戻しとが、良好且つ確実に達成される。
また、この採血装置で、本体部は、皮膚に当接される部分の穿刺方向への突出量を調節可能に設けられていると、穿刺針の皮膚への穿刺量を穿刺針の動作機構に関係なく調節することができる。
さらに、本発明では、上記採血装置と、交換可能に設けられ、血液に接触されて血糖に関する情報を検出可能な検出チップと、前記検出チップを保持して電気的に接続可能に設けられており、前記検出チップによって検出された血糖に関する情報を受信して処理し、血糖値および／または血糖値により算出される算出結果を出力する測定部とを一体に備える、血糖値計を提供する。
【０００７】
【発明の実施の形態】
図１に示す血糖値計１は、採血装置１０と測定部９３とが一体化されている装置である。血糖値計１の外形は、図１に示すように、図において左辺中央が左方向に突出している略直方体状の箱状に形成されたケース３により形成されている。ケース３は、例えば、前半分と後ろ半分とが別々の半割体として成形されており、公知の係合によって組み合わされている。
【０００８】
図１に示す血糖値計１は、正面左側に採血装置１０を備えている。図１に示すように、ケース３の上面左側から上方に突出する外形円柱状部は、セット部材１１の上部である。また、これと同軸を成して、ケース３の下面左側に、下方に突出するテーパ状部分は、当接部材７１の下部である。また、セット部材１１と当接部材７１と左右方向においてほぼ同じ位置にあたる正面上部に、紙面手前方向に突出する円柱状部分は、解除部材６１である。
【０００９】
また、血糖値計１の左側突出部分および右側部分に、測定部９３が設けられている。図１に示すように、ケース３の左辺の突出部には、左方向に開口する挿入口６が設けられている。挿入口６は、後述する検出チップ９９の挿入部分である（図７参照。）。図１におけるケース３の正面右側の上部には、液晶ディスプレイより成る表示部８が設けられている。また、ケース３の正面右側の下部には、左右方向に配列された複数のボタン９ａを備える操作部９が設けられている。
【００１０】
まず、血糖値計１の採血装置１０について説明する。
採血装置１０は、血糖値計１のケース３を本体部４としており、本体部４の内部にセット部材１１、発射部材４１、穿刺部材５１、解除部材６１、および当接部材７１を備えている。以下、内部を示す図２，３を主に参照して詳細に説明する。
【００１１】
セット部材１１は、有蓋円筒状の押圧部１３と、押圧部１３の蓋内面から図２において下方に延びる筒状の基部１５と、基部１５の下部に取付けられる円筒状の保持部１９とを備えている。押圧部１３は、ケース３の上面の開口に挿入されてこの開口を塞ぐとともに、スライド自在となる大きさの有蓋円筒状部材である。押圧部１３の内面上部には、基部１５のぐらつきを防止して安定化するための基部保持部１３ｂが設けられている。基部保持部１３ｂは、円盤状部分と、円盤状部分の中央から下方に突出する円柱状部分とを備えている。円盤状部分は、押圧部１３の内径に略等しい径を有し、円柱状部分は、基部１５の内径に略等しい径を有する。
【００１２】
基部１５は、有蓋円筒状に形成されており、下端に、円盤状のフランジ１５ａを備えている。基部１５は、上部は、基部保持部１３ｂの円柱状部分が挿入されており、押圧部１３と同軸を成すように配置されている。基部１５は、外周面から図２中右方向に突出する第１の係止突起１７を備えている。第１の係止突起１７は、上面が平面に形成されており、下面は下方に向かって突出量が減る傾斜面に形成されている。また、基部１５は、第１の係止突起１７と反対側の周部分に、軸線に平行な長孔１８を備えている。
保持部１９は、基部１５より大径の円筒状に形成されており、上端に半径方向に突出するフランジ１９ａを備え、下端に中心方向に延びる薄板状の受け部２０を備えている。保持部１９は、フランジ１９ａが基部１５のフランジ１５ａに突き合わされて、図示しないビスなどで固定されて、基部１５に一体化されている。
【００１３】
本体部４は、上面に形成された開口の下部に支持部材３１を備えている。支持部材３１は、断面Ｕ字状の環状部材で、円筒状の溝部３２の開口が上方を向くように、本体部４に固定されている。溝部３２の外周面は本体部４の開口と略一致する大きさに形成されている。また、支持部材３１の内周径は、セット部材１１の基部１５がスライド自在となる大きさに形成されている。
【００１４】
セット部材１１は、基部１５が支持部材３１の内周に通されて、押圧部１３が本体部４の上面から突出可能な位置となるように本体部４に設置されている。また、セット部材１１の基部１５と押圧部１３と支持部材３１の溝部３２とで形成される環状空間に、第１の付勢部材３３としてコイルスプリングが配置されている。第１の付勢部材３３は、セット部材１１を上方向（反穿刺方向）に付勢している。これにより、セット部材１１は、常時は、図２に示すように、押圧部１３の下部を残した殆どの部分が本体部４の上面より突出する位置に保持される。また、第１の付勢部材３３に抗して下方すなわち穿刺方向に押圧することにより、押圧部１３の下端が支持部材３１の溝部の下面に当接する位置（図８参照）まで移動可能となっている。なお、図８に示す位置は、本明細書におけるセット位置に対応する。
【００１５】
支持部材３１は、基部１５の第１の係止突起１７を係止可能な第１の固定部３４を備えている。第１の固定部３４は、図２において支持部材３１の下面右側から下方に延びる延長部３４ａと、延長部３４ａの下部に取付けられた爪部材３５と、規制部材３４ｂとを備えている。爪部材３５は、延長部３４ａの紙面手前奥方向に延びる軸に、軸を中心に回動可能に取り付けられている。爪部材３５の下面は平面に形成されており、第１の係止突起１７の上面と面接触可能に形成されている。規制部材３４ｂは、爪部材３５を基部１５の方向に付勢しており、所定の力が加えられたときのみ基部１５から離れる方向（図２において右側）に回動するように規制する。本実施形態では、基部１５側に折り曲げられた屈曲部を備える板バネで形成されている。規制部材３４ｂは、一端が支持部材３１の右側側面に、他端が爪部材３５の右側面下部に、それぞれ固定されて取付けられている。第１の固定部３４は、図８に示す最下位置にあるセット部材１１の第１の係止突起１７を爪部材３５の下端で係止することができ、第１の付勢部材３３による上方への付勢に抗してセット部材１１を最下位置に固定することができる。
【００１６】
発射部材４１は、軸状部材であり、セット部材１１の基部１５の筒内にスライド可能に設けられている。発射部材４１は、外周面に、基部１５の長孔１８から基部１５の外周より突出する第２の係止突起４３を備えている。第２の係止突起４３は、長孔１８内を上下方向に移動可能な大きさであり、下面が平面に形成されるとともに上面が上方に向かって突出量が減る傾斜面に形成されている。
【００１７】
発射部材４１の上端とセット部材１１の基部１５の内部空間上面との間には、発射部材４１を下方（穿刺方向）に付勢する第２の付勢部材４５として、コイルスプリングが配置されている。
また、支持部材３１には、第２の係止突起４３に係止して発射部材４１を固定可能な第２の固定部３６が設けられている。第２の固定部３６は、発射部材４１の第２の係止突起４３に対応する位置（図２では左側）に設けられており、第１の固定部３４と同様、下方に延びる延長部３６ａと、延長部３６ａの下部に取付けられた爪部材３７と、規制部材３６ｂとを備えている。第２の固定部３６は、爪部材３７が発射部材４１側に第２の係止突起４３に対応する形状の凹部３７ａを備えている他は、第１の固定部３４と対称的な構成を有しているため、説明を省略する。第２の固定部３６は、図２に示すように第２の係止突起４３を爪部材３７の凹部３７ａで係止して、発射部材４１が第２の付勢部材４５によって下方（穿刺方向）に移動しないように、発射部材４１を最上位置（発射位置）に固定することができる。なお、発射部材４１の発射位置は、本体部４に対しては、図２に示す自然状態における位置と同じであり、図８に示すように、セット部材１１がセット位置（最下位置）にあるときに、セット部材１１に対して相対的に最も上方に位置する位置である。
【００１８】
穿刺部材５１は、穿刺針８１を着脱可能に保持する部材で、台座部５１ａと針受け部５３と、シール部材５５とを備えている。台座部５１ａは、セット部材１１の保持部１９の内部を上下方向にスライド可能な外径を備える円盤状部分で、下面で保持部１９の受け部２０に係止される大きさに形成されている。また、台座部５１ａの下部外周は、より径の小さい円盤状に形成されている。この部分と、保持部１９との間に形成された環状空間には、第４の付勢部材５２としてのコイルスプリングが設けられている。第４の付勢部材５２は、台座部５１ａを上方に付勢している。
【００１９】
針受け部５３は、穿刺針８１を取付け可能な部分である。針受け部５３は、受け部２０の開口部分をスライド可能な円柱部を備えており、この円柱部の下部は下方に向かって径の大きくなる円錐状に形成されている。針受け部５３の軸方向の中心部分には、後述する穿刺針８１を保持できる凹状の着脱部５３ａが形成されている。着脱部５３ａは、凹状の壁面の一部が、弾性変形する係止片５３ｂで形成されており、係止片５３ｂの弾性変形により穿刺針８１の着脱が可能となっている。
【００２０】
シール部材５５は、後述する当接部材７１と穿刺部材５１との間を気密化できる部材であり、ゴム等の可撓性を備えるシール部５８と、剛性リング５６とを備えている。剛性リング５６は、針受け部５３の円柱部の下部を包囲する環状部材であり、金属など変形しにくい材質で形成されている。シール部５８は、後述する当接部材７１の円筒状内面に密着可能な筒状部材で、上部は、剛性リング５６の外周面に密着して一体化している。また、シール部５８の下部は、針受け部５３の下部の円錐状部分の外周面に密着可能な形状に形成されている。
【００２１】
解除部材６１は、第１の固定部３４および第２の固定部３６によるセット部材１１及び発射部材４１の固定を解除する部材で、本発明に係る第１の解除部材および第２の解除部材の両方に対応している。解除部材６１は、本実施形態では、第１の固定部３４の爪部材３５及び第２の固定部３６の爪部材３７を、セット部材１１の第１の係止突起１７及び発射部材４１の第２の係止突起４３から離れる方向に移動させられる種々の構成とすることができる。解除部材６１は、穿刺方向、例えば、図１に示す血糖値計１の上下方向に移動する構成とすることができる。好ましくは、解除部材６１は、穿刺方向とは異なる方向へ移動する構成であると、穿刺針８１を皮膚に突き刺すイメージを軽減でき、好ましい。本実施形態では、穿刺方向に垂直な方向であって、図１に示す正面から見て手前奥方向に移動する構成である。
【００２２】
解除部材６１は、図１，３，９に示すように、有蓋円筒状に形成されたキャップ部６３と、キャップ部６３の蓋面から内部に突出する拡開部６５とを備えている。キャップ部６３は、図１に示す本体部４の正面左側に形成された開口を塞ぐとともに、その内部をスライドできる大きさに形成されている。キャップ部６３は、蓋面と反対側の端部に半径方向に突出する凸部に形成された抜け止め６３ａを備えている。
【００２３】
本体部４は、図３に示すように、解除部材６１が設けられる開口断面に沿って内側に延びる内壁と、内壁の周端を外周とする円環状に形成されている支持部３９を備えている。内壁には、解除部材６１の抜け止め６３ａに対応する位置に切欠き状の孔が形成されており、抜け止め６３ａを係止可能になっている。また、支持部３９と解除部材６１の蓋面との間には、コイルスプリングが第３の付勢部材７０として設けられている。第３の付勢部材７０は、解除部材６１を本体部４の外側、すなわち図３中右側に付勢している。
【００２４】
解除部材６１の拡開部６５は、図１０〜１１に示すように、セット部材１１側に軸心を備える上面視で扇形に形成された板状部材で、押圧部１３の蓋面内側から略垂直に突出する板状部分である。拡開部６５の扇形部分の一方の側端部、すなわち、図１０における左側端部は、第２の固定部３６による第２の係止突起４３の固定を解除する第２の解除部６９に形成されている。また、拡開部６５の扇形部分の他方の側端部、すなわち図１０の右側端部は、第１の固定部３４による第１の係止突起１７の固定を解除する第１の解除部６７に形成されている。第２の解除部６９及び第１の解除部６７は、解除部材６１が本体部４の内部、すなわち、図３では左方、図１０では上方へ移動することにより、第２の固定部３６の爪部材３７または第１の固定部３４の爪部材３５に当接して、爪部材３５，３７をセット部材１１及び発射部材４１の軸線から離れる方向に回動させる。本実施形態では、第２の解除部６９は、第１の解除部６７よりも扇形の先端から半径側へ向かう傾斜面がきつく形成されている。これにより、図１１に示すように、解除部材６１が本体部４の内部に移動すると、まず、第２の解除部６９が第２の固定部３６の爪部材３７を回動させ、次いで、図１２に示すように第１の解除部６７が第１の固定部３４の爪部材３５を回動させるようになっている。
【００２５】
当接部材７１は、全体が筒状に形成されており、下部が下方に向かって径の小さくなるテーパ状に形成されている。当接部材７１の下端の開口７１ａは、穿刺針８１が突出して皮膚に穿刺できるようになっている。当接部材７１は、セット部材１１の下端、すなわち保持部１９が挿入されてスライド自在な大きさの内径に形成されている。また、当接部材７１のテーパ部分は、穿刺部材５１が最下位置にあるときに穿刺針８１が当接部材７１の先端から突出する長さに形成されている。当接部材７１は、好ましくは、透明な材料で形成されていると、血液が十分滲出したのを目で見て確認することができ、当接部材７１を皮膚から離すタイミングを適当にすることが容易となる。
【００２６】
本実施形態の当接部材７１は、本体部４からの突出量を調節可能に形成されている。当接部材７１の突出量が調節されることにより、穿刺部材５１の穿刺針８１が皮膚に穿刺される量を調節することができる。具体的には、当接部材７１は、外面に半球状に突出する係合部７２を備えている。一方、本体部４は、図４に示すような、当接部材７１の外周面に当接する受け面部７５を備えている。受け面部７５には、当接部材７１の係合部７２を挿入可能な長孔であって、高さ方向（上下方向に）傾斜して延びる係合受け７６が形成されている。当接部材７１は、係合部７２が係合受け７６に挿入されて、本体部４に固定されており、軸線を中心に回転させることにより、係合部７２が係合受け７６に沿って移動し、当接部材７１の本体部４からの突出量が増減する。
【００２７】
次に、本実施形態の穿刺部材５１の針受け部５３に着脱可能な穿刺針８１を備える穿刺針キット８０の一例について、図５，６を参照して説明する。穿刺針８１は、使用前は、衛生の目的で、他部材と接触しないように保護されている。また、使用後は、穿刺針８１に付着した血液を介する病気の感染などを防ぐために保護されることが好ましい。本実施形態の穿刺針キット８０は、穿刺針８１と、使用前および使用後の両方において穿刺針８１を保護するカートリッジ８６とを備えている。この穿刺針キット８０では、カートリッジ８６に収容されている穿刺針８１をそのまま穿刺部材５１に装着でき、また、カートリッジ８６を使って穿刺針８１を穿刺部材５１から取外しできる構成となっている。
【００２８】
穿刺針８１は、円柱状の針基部８２と金属製針状に形成された針部８４とを備えている。針基部８２は、前述の針受け部５３の着脱部５３ａに挿入されて、固定可能な大きさ、形状に形成されている。針基部８２の上部には、周方向に延びる凹状の溝部８２ａが設けられている。また、針基部８２の下部には、周方向に延びるより小さい溝に形成された凹部８２ｂが形成されている。針部８４は、皮膚に穿刺するのに十分な長さを備えている針である。針部８４は、公知の金属材料で形成できるが、好ましくは、生体適合性の観点から、ステンレスや白金などで形成される。穿刺針８１は、穿刺部材５１の針受け部５３に取付けられて、セット位置（図１３参照）で、当接部材７１から突出して皮膚を穿刺可能な長さを有している。
【００２９】
カートリッジ８６は、穿刺針８１を収容した状態で針基部８２を圧接、係合などによって保持可能な内径を備える筒状部材である。カートリッジ８６は、一端が使用前収容部８９に、他端が使用後収容部９１に形成されている。使用前収容部８９と使用後収容部９１との間には、図５（ｂ）に示すように平板状の仕切部８７が設けられており、特に、使用後収容部９１の穿刺針８１が収容される空間が閉鎖されるようになっている。
【００３０】
図５（ａ），（ｂ）に示すように、使用前収容部８９は、穿刺張り８１を包囲する大きさの円筒形部分である。使用後収容部９１は、先端側から軸線に沿って所定の長さだけ延びる切れ込みを備える筒状に形成されており、切れ込み部分の側端面に、穿刺針８１の針基部８２の溝部８２ａの凹状面に対応する形状の凸状部に形成された爪部９１ａを備えている。この爪部９１ａは、切れ込み部分によって半径方向に弾性変形しやすくなっている。
【００３１】
図５（ｂ）に、使用前収容部８９に収容されている穿刺針８１が穿刺部材５１に装着されるようすを示す。図５（ｂ）に示すように、針受け部５３の着脱部５３ａは、穿刺針８１の針基部８２の凹部８２ｂと係合可能な凸部５３ｃを備えている。このため、使用前収容部８９に保持されている穿刺針８１の針基部８２の端部を係止片５３ｂを外側に弾性変形させながら着脱部５３ａに挿入して、凹部８２ｂを凸部５３ｃに係合させることで、穿刺針８１が着脱部５３ａに固定される。したがって、この後、カートリッジ８６を引張ることで、穿刺針８１から使用前収容部８９が外れて、穿刺針８１の穿刺部材５１への装着が完了するようになっている。
【００３２】
また、図６（ａ）に、穿刺部材５１に装着されている穿刺針８１が使用後収容部９１に収容されるようすを示す。爪部９１ａと溝部８２ａとは、凹部８２ｂ及び凸部５３ｃより大きな凹凸形状であり、その係合力は、凹部８２ｂと凸部５３ｃとの係合力より大きい。したがって、図６（ａ）に示すように、当接部材７１の開口７１ａに使用後収容部９１を挿入して、使用後収容部９１の内部に針部８４を収容し、次いで爪部９１ａが針基部８２の溝部８２ａに係合させた後、カートリッジ８６を引張ることにより、針受け部５３から穿刺針８１を引き抜いて、取外すことができるようになっている。
なお、この穿刺針キット８０では、引き抜いた後の図６（ａ）に示す状態から、さらに針基部８２を使用後収容部９１内に押し込むことができる。この操作により、図６（ｂ）に示すように穿刺針８１全体を略完全に使用後収容部９１に収容することができ、穿刺針８１をカートリッジ８６に安定に収容して、針部８４に付着した血液が外部に晒されることを確実に防ぐことができる。
【００３３】
次に、測定部９３について説明する。測定部９３は、公知の種々の血糖値計または生体情報測定装置と同様の構成とすることができるため、特に図示せず、簡単に説明する。
測定部９３は、採血装置１０によって人体より取出された血液から血糖値を測定する部分である。測定部９３は、電極を備える検出チップ９９によって血糖値に関する情報を検出するためのチップ接続部と、チップ接続部で検出された情報を処理して血糖値を処理結果として求める処理手段と、処理結果を出力する処理手段とを備えている。
【００３４】
検出チップ９９は、典型的には、２または３の電極を備える部材である。本実施形態では、検出チップ９９は薄板状に形成されており、絶縁基板上に銅箔によって形成された複数の導線を備えている。検出チップ９９の血液接触側では、導線の端部が電極に形成されており、反対側の端部は、測定部９３に接続可能な端子に形成されている。検出チップ９９の電極間には、血液中から選択的に糖に関する情報を検出するためのコーティングが施されている。コーティングは、典型的には、グルコースオキシダーゼと電子メディエータとしてのフェロセン類とを含む材料より成る。検出チップ９９には、電気的に読み取り可能な情報が付与されていても良く、例えば、検出チップの感度に関する情報を付加することができる。
【００３５】
チップ接続部は、検出チップ９９を着脱自在に保持して検出チップ９９の端子に電気的に接続する部分である。本実施形態の血糖値計１では、チップ接続部は、挿入口６に連通する位置に内蔵されている。なお、チップ接続部は、チップ情報を備える検出チップ９９を用いる形態では、チップ情報を読み取り可能に形成される。
【００３６】
処理手段は、検出チップ接続部と電気的に接続されており、検出チップで検出される情報を電気的に受信して、この情報を演算などによって処理し、血糖値や血糖値が正常範囲であるかどうかなどを求める。処理手段は、図１に示す操作部９を備えている。操作部９は、測定開始の信号の他、被採血者や検出チップに関するデータの入力や、後述する出力手段からの出力方法の指示などに用いられる。なお、パソコン、電話回線などに接続可能な入力端子を備えていても良い。
出力手段は、処理手段による処理結果を、音声、表示、または電気情報として出力する公知の手段である。本実施形態では、図１に示すように文字、数字などによって視覚的に結果を出力する表示部８を備えている。また、図示しないがスピーカーや、パソコン、電話回線などに接続可能な出力端子などを設けることもできる。
【００３７】
次に、この血糖値計１を用いて、採血し、血糖値を測定する方法について、図７〜１３を参照して説明する。
まず、常時のセット部材１１及び発射部材４１、穿刺部材５１の配置について、図２を参照して説明する。セット部材１１は、第１の付勢部材３３によって上方、すなわち反穿刺方向に付勢されており、押圧部１３が本体部４の上面より突出する位置に配置されている。このとき、第１の係止突起１７は、第１の固定部３４によって係止されていない。発射部材４１は、第２の付勢部材４５によって下方、すなわち穿刺方向に付勢されており、第２の係止突起４３が第２の固定部３６に係止されて、最上位置に固定されている。穿刺部材５１は、発射部材４１の下端によって下方に位置規制されており、保持部１９の受け部２０に穿刺部材５１の台座部５１ａの下面が当接する位置に配置されている。
【００３８】
血糖値を測定するには、まず、図７の中段に示すように、血糖値計１の挿入口６に検出チップ９９を差し込み、セット部材１１を穿刺方向（図７の下方向）に押す。これにより、セット部材１１を図２に示す位置から図８に示す最下位置、すなわちセット位置まで下方向に移動させる。セット位置では、第１の係止突起１７が第１の固定部３４に係止されてセット部材１１全体が固定される。セット部材１１の保持部１９は、その下端でシール部材５５に当接して下方に押し、シール部材５５をより下方に配置する。このとき、発射部材４１は、第２の係止突起４３が第２の係止部３６によって固定されており移動しない。これにより、発射部材４１は相対的に押圧部１３に対して上方に移動するため、第２の付勢部材４５が収縮されて、発射部材４１を穿刺方向へ付勢するより大きい力が貯蔵される。また、このとき穿刺部材５１は、発射部材４１による下方への押圧が解除されて第４の付勢部材５２の付勢によって保持部１９に対して上昇し、保持部１９の中間の位置に安定に配置される。
【００３９】
次に、図７の下段に示すように血糖値計１の当接部材７１を皮膚に押し当てた後、解除部材６１を押すことにより、図９の上段に示すように穿刺針８１を穿刺し、引き抜くとともに、付圧を形成して血液（体液）を滲出させることができる。本実施形態の血糖値計１では、解除部材６１を押すことで、一連の動作で、図１３から図１４に示す状態まで、作動させることができる。ここでは、解除部材６１の動きとそれにともなう他の部分の動作とを説明するため、段階的に説明する。
【００４０】
解除部材６１を押すことにより、図１１に示すように、まず、第２の解除部６９が第２の固定部３６の爪部材３７を回動させる。したがって、発射部材４１の固定が解除されて、第２の付勢部材４５の付勢によって発射部材４１が穿刺方向に発射される。その結果、図１３に示すように、発射部材４１は穿刺部材５１に衝突し、穿刺部材５１は発射部材４１からの負荷によって、第４の付勢部材５２の付勢に抗して最下位置まで移動する。これにより、穿刺部材５１の穿刺針８１が当接部材７１より下方に突出する位置に移動し、皮膚１００に、穿刺針８１が穿刺される。その後、第４の付勢部材５２の弾発力によって、穿刺部材５１は上方に移動して、皮膚１００から抜かれる。
【００４１】
なお、図１３の状態において、第２の付勢部材４５の付勢力が第４の付勢部材５２の付勢力より強くなるように、各付勢部材を選択することにより、第１の解除部６７がセット部材１１の固定を解除しない状態では、穿刺針８１が皮膚に穿刺されたままとなるように形成することも可能である。
【００４２】
解除部材６１の押圧により、図１２に示すように、第２の解除部６９に連続して第１の解除部６７が第１の固定部３４の爪部材３５を回動させる。したがって、セット部材１１の固定が解除されて、第１の付勢部材３３の付勢によってセット部材１１が上方、すなわち反穿刺方向に勢いよく引戻される。これにより、保持部１９に保持されている穿刺部材５１も上方に移動し、穿刺部材５１によってシール部材５５が上に引き上げられて、図１４に示す位置となる。この状態は、図９の中段である。
【００４３】
ここで、シール部材５５は、当接部材７１と穿刺部材５の両方に密着した状態で上方に移動する。このため、穿刺部材５１、シール部材５５、当接部材７１、および皮膚１００によって形成される密閉空間の容積が増大し、内部が負圧となる。これにより、穿刺針８１によって傷つけられた部分から、良好に血液が滲出する。
【００４４】
この後、血糖値計１を皮膚から離し、図９の下段に示すように、滲出した血液に検出チップの検出部分を接触させ、測定スイッチをオンにして、測定を開始する。これにより、処理手段が検出チップからの情報を受信して血糖値等を求め、出力手段（表示部８）によって出力し、血糖値の測定が完了する。
【００４５】
この血糖値計１によれば、皮膚に当接する前にセット部材１１および発射部材４１を、それぞれセット位置、発射位置に固定しておくことができ、これらの位置へのセッティングが容易である。特に、第１および第２の付勢部材３３，４５に抗する押圧動作は、所定の力を必要とするものであるが、血糖値計１は、皮膚に当接させない状態でこの押圧動作を行うことができ簡単である。
また、この様に所定の位置に固定された各部材を備える血糖値計１を皮膚に押し当てた後、ボタン式の解除部材６１を押すだけで、穿刺および後続しての引戻しが可能であり、操作が簡単である。一度の操作で穿刺および引戻しが行えるため、精神的な苦痛を伴う操作数が低減されている。
【００４６】
また、解除部材６１は、セット部材１１および発射部材４１の固定を解除するだけであり、セット部材１１及び発射部材４１の移動に比して小さい動きで良いため、操作性が向上されている。特に、解除部材６１は、穿刺方向に垂直な方向への移動であり、皮膚へ押し付けたままの操作が容易である。また、穿刺方向とは異なる方向であるため、皮膚に突き刺すイメージが少なく、精神的苦痛の軽減が期待できる。
さらに、解除部材６１は、発射部材４１の固定解除がセット部材１１の固定解除より早く行える構成とされていることにより、皮膚への穿刺の瞬間に第１の付勢部材３３が穿刺部材５１に作用しない。このため、常に同じ深さの穿刺が、安定して行える構成となっている。
【００４７】
さらに、皮膚と穿刺針が存在する本体部内の仕切部分（本実施形態では、当接部材７１の内面と穿刺部材５１とシール部材５５）とで密閉状空間を形成可能に設けることにより、シール部材５５の引戻しに係る容積増加によって、穿刺によって傷つけた皮膚部分を負圧にすることができる。これにより、血液の滲出（流出）を良好に促進させることができる。特に、本血糖値計１では、皮膚に当接させる前に穿刺部材５１とシール部材５５とを穿刺側に近い位置に配置できるため、穿刺後の戻り動作で、容積増加ができ、エア抜き手段を必要としない。
また、本体部４の皮膚に当接する部分を、ケース３とは別体の当接部材７１で構成し、回転によってその突出量が調節できる構成とすることにより、穿刺のための動作機構に関係なく、穿刺針８１の穿刺量を調節することができる。このため、採血装置１０の構成が簡単である。なお、当接部材７１は、別体、且つ取外し可能に形成されていることにより、採血によって流出した血液が付着したときに、簡単に洗浄でき、簡便である。
【００４８】
なお、本発明は、上記実施形態に限定されない。
測定部を別に備える血糖値計であっても良い。また、血糖値測定用に限定されず、血液等の体液から生体情報を測定する種々の場合に利用される採血装置とすることができる。また、検出チップの形状、構成や測定部の構成は、公知の血糖値計または生体情報測定装置の形態とすることができ、上記実施形態に限定されないものである。
第１および第２の解除部材は、別々の部材で構成されていても良い。また、例えば、二段階の押し込み量が設定されているボタンや、２方向に移動できるレバーなど、二段階の操作が可能な単一の部材によって、２段階の操作によって穿刺と引戻しとが行える構成であっても良い。
また、セット部材１１および発射部材４１の固定および解除のための構成は、本実施形態に限定されない。例えば、セット部材１１および発射部材４１にそれぞれ突起を設けるとともに、セット部材１１および発射部材４１を回転させることで、固定を解除する構成であっても良い。このような構成では、解除部材を必要としない。
また、穿刺部材５１は、本実施形態では、第４の付勢部材５２によってセット位置において所定の高さに保持される構成としたが、別の構成によって穿刺部材５１の位置を制御しても良いことはもちろんである。例えば、図１５に示すように、シール部材５５に剛性リング５６を設けず、全体を可撓性を有するゴム部材で形成することにより、シール部材５５によって穿刺部材５１をセット位置に保持可能に設けても良い。
【００４９】
【発明の効果】
本発明では、穿刺および引戻しのための操作がより単純な採血装置、および血糖値計を提供することにより、採血操作の容易化、あるいは精神的苦痛の軽減を図ることができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態に関わる血糖値計の平面図である。
【図２】図１の血糖値計の採血装置部分の側断面図である。
【図３】図１の血糖値計の採血装置部分の縦断面図である。
【図４】図１の血糖値計の当接部材およびその周辺を示す分解図である。
【図５】図１の血糖値計で利用可能な穿刺針キットの一実施形態を用いて、穿刺針を血糖値計の穿刺部材に装着するようすを示す部分断面図である。
【図６】図５の穿刺針キットを用いて、血糖値計で使用した穿刺針を取り外し、収容するようすを示す部分断面図である。
【図７】図１の血糖値計を用いて血糖値を測定するための工程の前半を示す模式図である。
【図８】血糖値計の採血装置をセットした状態を示す断面図である。
【図９】図１の血糖値計を用いて血糖値を測定するための工程の後半を示す模式図である。
【図１０】図１の血糖値計において、通常の状態の解除部材と第１の固定部および第２の固定部の位置関係を示す部分横断面図である。
【図１１】図１の血糖値計において、押圧途中の解除部材と第１の固定部および第２の固定部の位置関係を示す部分横断面図である。
【図１２】図１の血糖値計において、完全に押し込まれた解除部材と第１の固定部および第２の固定部の位置関係を示す部分横断面図である。
【図１３】図１の血糖値計において、穿刺針が穿刺されたようすを示す断面図である。
【図１４】図１の血糖値計において、穿刺針が引戻されたようすを示す断面図である。
【図１５】本発明の別の実施形態に係る血糖値計の採血装置の部分断面図である。
【符号の説明】
１血糖値計
３ケース
４本体部
６挿入口
８表示部
９操作部
９ａボタン
１０採血装置
１１セット部材
１３押圧部
１３ｂ基部保持部
１５基部
１５ａフランジ
１７第１の係止突起
１８長孔
１９保持部
１９ａフランジ
２０受け部
３１支持部材
３２溝部
３３第１の付勢部材
３４第１の固定部
３６第２の固定部
３４ａ，３６ａ延長部
３４ｂ，３６ｂ規制部材
３５，３７爪部材
３７ａ凹部
３９支持部
４１発射部材
４３第２の係止突起
４５第２の付勢部材
５１穿刺部材
５１ａ台座部
５２第４の付勢部材
５３針受け部
５３ａ着脱部
５３ｂ係止片
５３ｃ凸部
５５シール部材
５６剛性リング
５８シール部
６１解除部材
６３キャップ部
６３ａ抜け止め
６５拡開部
６７第１の解除部
６９第２の解除部
７０第３の付勢部材
７１当接部材
７２係合部
７５受け面部
７６係合受け
８０穿刺針キット
８１穿刺針
８２針基部
８２ａ溝部
８２ｂ凹部
８４針部
８６カートリッジ
８７仕切部
８９使用前収容部
９１使用後収容部
９１ａ爪部
９３測定部
９９検出チップ
１００皮膚[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for collecting a small amount of blood, for example, a blood collection apparatus suitable for blood collection for measuring a blood sugar level.
[0002]
[Prior art]
When it is desired to measure a specific blood component, for example, when measuring a blood sugar level or the like, a very small amount of blood is generally collected from the earlobe or fingertip. A diabetic patient who receives treatment by insulin administration measures the blood glucose level several times a day to determine the dose of insulin, etc., but the patient himself often performs the treatment. For this reason, a blood sampling apparatus that is simple and reduces physical and mental pain has been proposed (see, for example, Patent Documents 1 and 2).
[0003]
[Patent Document 1]
JP-A-8-84721
[Patent Document 2]
JP-A-7-213925
[0004]
[Problems to be solved by the invention]
In these methods, puncture with a predetermined puncture depth can be performed repeatedly by using the force of a spring or a magnet. In addition, blood can be absorbed with a negative pressure in the sealed space formed between the skin surface to which the blood collection device is applied and the blood collection device by pulling back the member moved by puncture. Blood can be collected.
By the way, in any of these blood collection devices, a slide member that is substantially coaxial with the puncture needle must be moved by a predetermined length in order to generate a stress necessary for the blood collection person to fire the puncture needle in the puncture direction. . For this reason, there is a time difference from the start of pressing the slide member to the puncture of the puncture needle, and there is a risk of feeling mental stress during this time. Also, when pulling back the slide member to pull back the puncture needle, the pressing force applied to the slide member must be released while the blood collection device main body is pressed against the skin, especially when collecting blood with one hand by itself. Operation may be complicated. In addition, since the moving direction of the slide member is the same as the moving direction of the puncture needle, it is easy to create an image that pierces the skin when measured by itself.
[0005]
Accordingly, an object of the present invention is to provide a blood collection device that is simpler in operation for puncturing and pulling back.
Another object of the present invention is to provide a blood glucose meter capable of measuring a blood glucose level that is simpler for puncturing and pulling back.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problem, a blood collection apparatus including a replaceable puncture needle, wherein when the puncture needle is punctured into the skin, a body portion that comes into contact with the skin, and a puncture direction with respect to the body portion A set member that is slidable and urged toward the anti-puncture side and that can be fixed at the set position closest to the puncture side, and that is slidable in the puncture direction with respect to the set member and attached to the puncture side A firing member that is biased and can be fixed at a launch position that is located closest to the puncture side, and the puncture needle, and is provided to be slidable in the puncture direction with respect to the set member. A puncture member that can be held at a position that does not protrude from the main body when it is located and is moved from the main body to a position where it can puncture the skin by firing in the puncturing direction of the firing member Providing a blood collection apparatus comprising.
According to this blood collection device, the puncture member can be obtained by fixing the set member to the set position, fixing the firing member to the firing position, and releasing the fixation of the firing member while the main body is in contact with the skin. Is moved in the puncturing direction, and the puncture needle is punctured into the skin. Also, by releasing the fixation of the set member, the set member is moved in the anti-puncture direction by urging, and the puncture member held by the set member is also moved in the anti-puncture direction so that the puncture needle is pulled out from the skin. It is. In this apparatus, since the set member can be fixed at the set position and the firing member can be fixed at the firing position, the puncture needle can be punctured into the skin only by an operation of setting the position in advance and releasing the fixation. Therefore, the operation in the state of being in contact with the skin is only the unlocking of the firing member and the set member, and these movements can be set regardless of the puncture direction, and the operation amount is also the movement for puncture. Can be set regardless. Therefore, the operation after contacting the skin can be simplified.
The blood collection device includes a movable first release member for releasing the fixation of the set member to the set position, and a movable second release member for releasing the fixation of the firing member to the firing position. It can be set as the structure provided with. Thereby, since it does not touch a set member or a launch member directly, it can be set as simpler operation. For example, the first and second release members can be button-types that are elastically held and move by a predetermined depth, so that the operation distance can be further shortened to facilitate operation. Thereby, the mental pain concerning puncture operation is reduced.
In this blood collection device, when the first release member and the second release member are integrated so that the movement direction for releasing the fixation is the same, the puncture needle can be punctured and pulled back with fewer operations. This is possible and preferable. In this case, more preferably, prior to the release of the fixing of the set member by the first release member, the fixation of the firing member by the second release member is performed. The pulling back of the puncture needle to be performed is achieved satisfactorily and reliably.
Further, in this blood collection device, when the main body portion is provided so that the amount of protrusion in the puncture direction of the portion in contact with the skin can be adjusted, the amount of puncture of the puncture needle into the skin is used as the operation mechanism of the puncture needle. Can be adjusted regardless.
Furthermore, in the present invention, the blood collection device is provided so as to be replaceable, and is provided so as to be able to be electrically connected while holding the detection chip and capable of detecting information relating to blood glucose in contact with blood. A blood glucose meter is provided integrally with a measurement unit that receives and processes information related to blood glucose detected by the detection chip and outputs a blood glucose level and / or a calculation result calculated based on the blood glucose level.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A blood glucose meter 1 shown in FIG. 1 is a device in which a blood collection device 10 and a measurement unit 93 are integrated. As shown in FIG. 1, the blood glucose meter 1 has an outer shape formed by a case 3 formed in a substantially rectangular parallelepiped box shape with the center of the left side protruding leftward in the figure. In the case 3, for example, the front half and the rear half are formed as separate halves, and are combined by known engagement.
[0008]
A blood glucose meter 1 shown in FIG. 1 includes a blood collection device 10 on the front left side. As shown in FIG. 1, the outer cylindrical portion protruding upward from the upper left side of the case 3 is the upper portion of the set member 11. Further, a tapered portion which is coaxial with this and protrudes downward on the left side of the lower surface of the case 3 is a lower portion of the contact member 71. In addition, the columnar portion that protrudes in the front direction of the drawing on the front upper portion that is substantially the same position in the left-right direction as the set member 11 and the contact member 71 is the release member 61.
[0009]
Further, a measuring unit 93 is provided on the left protruding portion and the right portion of the blood glucose meter 1. As shown in FIG. 1, the left side protrusion of the case 3 is provided with an insertion port 6 that opens in the left direction. The insertion port 6 is an insertion portion of a detection chip 99 described later (see FIG. 7). A display unit 8 made of a liquid crystal display is provided at the upper right side of the front surface of the case 3 in FIG. In addition, an operation unit 9 including a plurality of buttons 9 a arranged in the left-right direction is provided at the lower part on the right side of the front surface of the case 3.
[0010]
First, the blood collection device 10 of the blood glucose meter 1 will be described.
The blood collection device 10 uses the case 3 of the blood glucose meter 1 as a main body 4, and includes a set member 11, a firing member 41, a puncture member 51, a release member 61, and a contact member 71 inside the main body 4. . Hereinafter, a detailed description will be given mainly with reference to FIGS.
[0011]
The set member 11 includes a covered cylindrical pressing portion 13, a cylindrical base portion 15 extending downward from the inner surface of the lid of the pressing portion 13 in FIG. 2, and a cylindrical holding portion 19 attached to the lower portion of the base portion 15. ing. The pressing portion 13 is a covered cylindrical member that is inserted into the opening on the upper surface of the case 3 to close the opening and is slidable. A base holding portion 13b for preventing the base portion 15 from wobbling and stabilizing is provided on the upper surface of the inner surface of the pressing portion 13. The base holding part 13b includes a disk-shaped part and a columnar part protruding downward from the center of the disk-shaped part. The disc-shaped portion has a diameter substantially equal to the inner diameter of the pressing portion 13, and the columnar portion has a diameter substantially equal to the inner diameter of the base portion 15.
[0012]
The base portion 15 is formed in a covered cylindrical shape, and includes a disk-shaped flange 15a at the lower end. The upper portion of the base portion 15 is inserted with the cylindrical portion of the base portion holding portion 13 b and is arranged so as to be coaxial with the pressing portion 13. The base 15 includes a first locking protrusion 17 that protrudes rightward in FIG. 2 from the outer peripheral surface. The first locking projection 17 has a flat upper surface, and a lower surface formed on an inclined surface whose amount of protrusion decreases downward. Further, the base portion 15 is provided with a long hole 18 parallel to the axis in the peripheral portion opposite to the first locking projection 17.
The holding portion 19 is formed in a cylindrical shape having a larger diameter than the base portion 15, and includes a flange 19 a that protrudes in the radial direction at the upper end and a thin plate-shaped receiving portion 20 that extends in the central direction at the lower end. The holding part 19 is integrated with the base part 15 by abutting the flange 19 a against the flange 15 a of the base part 15 and fixing with a screw (not shown).
[0013]
The main body 4 includes a support member 31 at the bottom of the opening formed on the upper surface. The support member 31 is an annular member having a U-shaped cross section, and is fixed to the main body portion 4 so that the opening of the cylindrical groove portion 32 faces upward. The outer peripheral surface of the groove portion 32 is formed in a size that substantially matches the opening of the main body portion 4. Further, the inner peripheral diameter of the support member 31 is formed such that the base portion 15 of the set member 11 is slidable.
[0014]
The set member 11 is installed in the main body portion 4 so that the base portion 15 is passed through the inner periphery of the support member 31 and the pressing portion 13 is in a position where it can protrude from the upper surface of the main body portion 4. In addition, a coil spring is disposed as a first biasing member 33 in an annular space formed by the base portion 15 of the set member 11, the pressing portion 13, and the groove portion 32 of the support member 31. The first urging member 33 urges the set member 11 upward (anti-puncture direction). Thereby, as shown in FIG. 2, the set member 11 is normally held at a position where most of the lower portion of the pressing portion 13 is protruded from the upper surface of the main body portion 4. Further, by pressing downward against the first urging member 33, that is, in the puncturing direction, the lower end of the pressing portion 13 can be moved to a position where the lower end of the groove portion of the support member 31 contacts (see FIG. 8). ing. Note that the positions shown in FIG. 8 correspond to the set positions in this specification.
[0015]
The support member 31 includes a first fixing portion 34 that can lock the first locking protrusion 17 of the base portion 15. The first fixing part 34 includes an extension part 34a extending downward from the lower right side of the support member 31 in FIG. 2, a claw member 35 attached to the lower part of the extension part 34a, and a regulation member 34b. The claw member 35 is attached to an axis extending in the front and back direction of the extension portion 34a so as to be rotatable about the axis. The lower surface of the claw member 35 is formed as a flat surface so that it can come into surface contact with the upper surface of the first locking protrusion 17. The restricting member 34b biases the claw member 35 in the direction of the base 15 and restricts the claw member 35 so as to rotate in a direction away from the base 15 (right side in FIG. 2) only when a predetermined force is applied. In this embodiment, it is formed by a leaf spring including a bent portion bent toward the base portion 15 side. The regulating member 34 b is fixedly attached to one end on the right side surface of the support member 31 and the other end on the lower right side surface of the claw member 35. The first fixing portion 34 can lock the first locking protrusion 17 of the set member 11 at the lowermost position shown in FIG. 8 at the lower end of the claw member 35, and the first biasing member 33 The set member 11 can be fixed at the lowermost position against the upward bias.
[0016]
The firing member 41 is a shaft-like member, and is slidably provided in the cylinder of the base portion 15 of the set member 11. The firing member 41 includes a second locking projection 43 that protrudes from the outer periphery of the base portion 15 through the long hole 18 of the base portion 15 on the outer peripheral surface. The second locking projection 43 is sized so as to be movable in the up-down direction within the long hole 18, and the lower surface is formed into a flat surface and the upper surface is formed into an inclined surface whose amount of protrusion decreases upward. .
[0017]
A coil spring is disposed between the upper end of the firing member 41 and the upper surface of the internal space of the base portion 15 of the set member 11 as a second biasing member 45 that biases the firing member 41 downward (in the puncturing direction). Yes.
In addition, the support member 31 is provided with a second fixing portion 36 that can be locked to the second locking protrusion 43 to fix the firing member 41. The second fixing part 36 is provided at a position (left side in FIG. 2) corresponding to the second locking protrusion 43 of the firing member 41, and like the first fixing part 34, the extension part 36a extending downward. And a claw member 37 attached to the lower part of the extension 36a, and a regulating member 36b. The second fixing portion 36 has a symmetric configuration with the first fixing portion 34 except that the claw member 37 includes a concave portion 37a having a shape corresponding to the second locking projection 43 on the firing member 41 side. Since it has, description is abbreviate | omitted. As shown in FIG. 2, the second fixing portion 36 locks the second locking projection 43 with the concave portion 37 a of the claw member 37, and the firing member 41 is moved downward by the second urging member 45 (puncturing direction). It is possible to fix the firing member 41 at the uppermost position (launch position) so as not to move to (). The launch position of the launch member 41 is the same as the position in the natural state shown in FIG. 2 with respect to the main body 4, and as shown in FIG. 8, the set member 11 is at the set position (lowermost position). In some cases, the position is located at the uppermost position relative to the set member 11.
[0018]
The puncture member 51 is a member that detachably holds the puncture needle 81, and includes a pedestal portion 51a, a needle receiving portion 53, and a seal member 55. The pedestal portion 51a is a disk-shaped portion having an outer diameter that can slide in the vertical direction inside the holding portion 19 of the set member 11, and is formed in a size that can be locked to the receiving portion 20 of the holding portion 19 on the lower surface. Yes. Moreover, the outer periphery of the lower part of the base part 51a is formed in the disk shape with a smaller diameter. A coil spring as the fourth urging member 52 is provided in the annular space formed between this portion and the holding portion 19. The fourth urging member 52 urges the pedestal portion 51a upward.
[0019]
Needle receiving portion 53 is a portion to which puncture needle 81 can be attached. The needle receiving portion 53 includes a cylindrical portion that can slide the opening portion of the receiving portion 20, and a lower portion of the cylindrical portion is formed in a conical shape having a diameter that increases downward. A concave attaching / detaching portion 53 a that can hold a puncture needle 81, which will be described later, is formed at the axial center portion of the needle receiving portion 53. A part of the concave wall surface of the attachment / detachment portion 53a is formed by an elastically deformable locking piece 53b, and the puncture needle 81 can be attached / detached by elastic deformation of the locking piece 53b.
[0020]
The seal member 55 is a member that can seal between a contact member 71 and a puncture member 51, which will be described later, and includes a seal portion 58 having flexibility such as rubber and a rigid ring 56. The rigid ring 56 is an annular member that surrounds the lower portion of the cylindrical portion of the needle receiving portion 53, and is formed of a material that is not easily deformed, such as metal. The seal portion 58 is a cylindrical member that can be in close contact with a cylindrical inner surface of a contact member 71 described later, and an upper portion thereof is in close contact with and integrated with the outer peripheral surface of the rigid ring 56. Further, the lower portion of the seal portion 58 is formed in a shape that can be in close contact with the outer peripheral surface of the conical portion at the lower portion of the needle receiving portion 53.
[0021]
The release member 61 is a member that releases the fixation of the setting member 11 and the firing member 41 by the first fixing portion 34 and the second fixing portion 36, and is the first release member and the second release member according to the present invention. It corresponds to both. In the present embodiment, the release member 61 includes the claw member 35 of the first fixing portion 34 and the claw member 37 of the second fixing portion 36, the first locking protrusion 17 of the set member 11, and the first of the firing member 41. It can be set as the various structures moved in the direction away from the 2 latching protrusion 43. FIG. The release member 61 can be configured to move in the puncture direction, for example, in the vertical direction of the blood glucose meter 1 shown in FIG. Preferably, the release member 61 is configured to move in a direction different from the puncture direction, which can reduce an image of piercing the puncture needle 81 into the skin. In the present embodiment, it is configured to move in a direction perpendicular to the puncture direction and in the front-rear direction as viewed from the front shown in FIG.
[0022]
As shown in FIGS. 1, 3, and 9, the release member 61 includes a cap portion 63 formed in a covered cylindrical shape, and an expanded portion 65 that protrudes inward from the lid surface of the cap portion 63. The cap part 63 is formed in a size that can close the opening formed on the front left side of the main body part 4 shown in FIG. The cap part 63 is provided with a stopper 63a formed on a convex part protruding in the radial direction at an end opposite to the cover surface.
[0023]
As shown in FIG. 3, the main body 4 includes an inner wall that extends inward along the opening cross section where the release member 61 is provided, and a support 39 that is formed in an annular shape with the peripheral edge of the inner wall as an outer periphery. Yes. On the inner wall, a notch-like hole is formed at a position corresponding to the retaining member 63a of the release member 61, and the retaining member 63a can be locked. A coil spring is provided as a third urging member 70 between the support portion 39 and the cover surface of the release member 61. The third urging member 70 urges the release member 61 to the outside of the main body portion 4, that is, the right side in FIG.
[0024]
As shown in FIGS. 10 to 11, the expanding portion 65 of the release member 61 is a plate-like member formed in a fan shape in a top view having an axis on the set member 11 side, and is substantially from the inside of the lid surface of the pressing portion 13. It is a plate-like part protruding vertically. One side end portion of the fan-shaped portion of the expanding portion 65, that is, the left end portion in FIG. 10 is a second release portion 69 that releases the fixation of the second locking projection 43 by the second fixing portion 36. Is formed. Further, the other side end portion of the fan-shaped portion of the expanding portion 65, that is, the right end portion in FIG. 10 is a first release portion 67 that releases the fixation of the first locking protrusion 17 by the first fixing portion 34. Is formed. The second release portion 69 and the first release portion 67 are configured so that the release member 61 moves to the inside of the main body portion 4, that is, leftward in FIG. 3 and upward in FIG. The claw member 37 or the claw member 35 of the first fixed portion 34 is brought into contact with the claw member 35, and the claw members 35, 37 are rotated in a direction away from the axis of the set member 11 and the firing member 41. In the present embodiment, the second release portion 69 is formed with a more inclined surface from the fan-shaped tip to the radial side than the first release portion 67. Accordingly, as shown in FIG. 11, when the release member 61 moves into the main body portion 4, first, the second release portion 69 rotates the claw member 37 of the second fixed portion 36, and then 12, the first release portion 67 rotates the claw member 35 of the first fixing portion 34.
[0025]
The abutting member 71 is formed in a cylindrical shape as a whole, and a lower portion is formed in a tapered shape with a diameter decreasing downward. The opening 71a at the lower end of the contact member 71 is adapted to allow the puncture needle 81 to protrude and puncture the skin. The contact member 71 has a lower end of the set member 11, that is, an inner diameter that is slidable when the holding portion 19 is inserted. Further, the taper portion of the contact member 71 is formed such that the puncture needle 81 protrudes from the tip of the contact member 71 when the puncture member 51 is at the lowest position. When the contact member 71 is preferably formed of a transparent material, it can be visually confirmed that blood has sufficiently oozed out, and the timing at which the contact member 71 is separated from the skin is made appropriate. Becomes easy.
[0026]
The contact member 71 of the present embodiment is formed so that the amount of protrusion from the main body 4 can be adjusted. By adjusting the protrusion amount of the contact member 71, the amount of puncture needle 81 of the puncture member 51 punctured into the skin can be adjusted. Specifically, the contact member 71 includes an engaging portion 72 that protrudes in a hemispherical shape on the outer surface. On the other hand, the main body portion 4 includes a receiving surface portion 75 that comes into contact with the outer peripheral surface of the contact member 71 as shown in FIG. The receiving surface portion 75 is formed with an engagement receiving 76 that is an elongated hole into which the engaging portion 72 of the abutting member 71 can be inserted and extends while being inclined in the height direction (vertical direction). The abutting member 71 has the engaging portion 72 inserted into the engaging receiver 76 and is fixed to the main body portion 4, and the engaging portion 72 is moved along the engaging receiver 76 by rotating around the axis. It moves, and the protrusion amount from the main-body part 4 of the contact member 71 increases / decreases.
[0027]
Next, an example of a puncture needle kit 80 including a puncture needle 81 that can be attached to and detached from the needle receiving portion 53 of the puncture member 51 of the present embodiment will be described with reference to FIGS. Prior to use, puncture needle 81 is protected from contact with other members for the purpose of hygiene. Further, after use, it is preferable to protect the puncture needle 81 in order to prevent infection of a disease through blood adhering to the puncture needle 81. The puncture needle kit 80 of this embodiment includes a puncture needle 81 and a cartridge 86 that protects the puncture needle 81 both before and after use. In this puncture needle kit 80, the puncture needle 81 accommodated in the cartridge 86 can be directly attached to the puncture member 51, and the puncture needle 81 can be detached from the puncture member 51 using the cartridge 86.
[0028]
The puncture needle 81 includes a cylindrical needle base portion 82 and a needle portion 84 formed in a metal needle shape. The needle base portion 82 is formed in a size and shape that can be fixed by being inserted into the attaching / detaching portion 53a of the needle receiving portion 53 described above. A concave groove 82 a extending in the circumferential direction is provided on the upper portion of the needle base 82. Further, a recess 82b formed in a smaller groove extending in the circumferential direction is formed at the lower portion of the needle base 82. The needle portion 84 is a needle having a length sufficient to puncture the skin. The needle portion 84 can be formed of a known metal material, but is preferably formed of stainless steel or platinum from the viewpoint of biocompatibility. The puncture needle 81 is attached to the needle receiving portion 53 of the puncture member 51 and has a length capable of protruding from the contact member 71 and puncturing the skin at the set position (see FIG. 13).
[0029]
The cartridge 86 is a cylindrical member having an inner diameter that can hold the needle base 82 by pressure contact, engagement, or the like while the puncture needle 81 is accommodated. One end of the cartridge 86 is formed in the pre-use storage part 89 and the other end is formed in the post-use storage part 91. A flat partition 87 is provided between the pre-use storage unit 89 and the post-use storage unit 91, as shown in FIG. 5B. In particular, the puncture needle 81 of the post-use storage unit 91 is provided. The space to be accommodated is closed.
[0030]
As shown in FIGS. 5A and 5B, the pre-use housing portion 89 is a cylindrical portion having a size surrounding the puncture tension 81. The post-use accommodating portion 91 is formed in a cylindrical shape having a cut extending a predetermined length along the axis from the distal end side, and a concave shape of the groove portion 82a of the needle base portion 82 of the puncture needle 81 is formed on the side end surface of the cut portion. A claw portion 91a formed on a convex portion having a shape corresponding to the surface is provided. The claw portion 91a is easily elastically deformed in the radial direction by the cut portion.
[0031]
FIG. 5B shows how the puncture needle 81 accommodated in the pre-use accommodating portion 89 is attached to the puncture member 51. As shown in FIG. 5 (b), the detachable portion 53 a of the needle receiving portion 53 includes a convex portion 53 c that can be engaged with the concave portion 82 b of the needle base portion 82 of the puncture needle 81. For this reason, the end portion of the needle base portion 82 of the puncture needle 81 held in the pre-use housing portion 89 is inserted into the detachable portion 53a while elastically deforming the locking piece 53b outward, and the concave portion 82b is formed into the convex portion 53c. By engaging, the puncture needle 81 is fixed to the detachable portion 53a. Therefore, after that, by pulling the cartridge 86, the pre-use accommodating portion 89 is detached from the puncture needle 81, and the attachment of the puncture needle 81 to the puncture member 51 is completed.
[0032]
FIG. 6A shows a state in which the puncture needle 81 attached to the puncture member 51 is accommodated in the after-use accommodating portion 91. The claw portion 91a and the groove portion 82a have a larger concavo-convex shape than the concave portion 82b and the convex portion 53c, and the engaging force thereof is larger than the engaging force between the concave portion 82b and the convex portion 53c. Therefore, as shown in FIG. 6A, the post-use storage portion 91 is inserted into the opening 71a of the contact member 71, the needle portion 84 is stored inside the post-use storage portion 91, and then the claw portion 91a is After engaging the groove 82 a of the needle base portion 82, the cartridge 86 is pulled, whereby the puncture needle 81 can be pulled out from the needle receiving portion 53 and removed.
In this puncture needle kit 80, the needle base portion 82 can be further pushed into the post-use accommodating portion 91 from the state shown in FIG. By this operation, as shown in FIG. 6B, the entire puncture needle 81 can be accommodated almost completely in the accommodating portion 91 after use, and the puncture needle 81 can be stably accommodated in the cartridge 86 and the needle portion 84 can be It is possible to reliably prevent the attached blood from being exposed to the outside.
[0033]
Next, the measuring unit 93 will be described. Since the measurement part 93 can be set as the structure similar to a various well-known blood glucose meter or biological information measuring device, it is not shown in particular and is demonstrated easily.
The measuring unit 93 is a part that measures a blood sugar level from blood taken from the human body by the blood collection device 10. The measurement unit 93 includes a chip connection unit for detecting information related to the blood glucose level by the detection chip 99 including electrodes, processing means for processing the information detected by the chip connection unit and obtaining the blood glucose level as a processing result, And processing means for outputting a result.
[0034]
The detection chip 99 is typically a member having two or three electrodes. In this embodiment, the detection chip 99 is formed in a thin plate shape, and includes a plurality of conductive wires formed of copper foil on an insulating substrate. On the blood contact side of the detection chip 99, the end of the conducting wire is formed as an electrode, and the opposite end is formed as a terminal that can be connected to the measuring unit 93. Between the electrodes of the detection chip 99, a coating for selectively detecting information on sugar from the blood is applied. The coating typically consists of a material comprising glucose oxidase and ferrocenes as electron mediators. The detection chip 99 may be provided with electrically readable information. For example, information on the sensitivity of the detection chip can be added.
[0035]
The chip connection part is a part that holds the detection chip 99 in a detachable manner and is electrically connected to a terminal of the detection chip 99. In the blood glucose meter 1 of the present embodiment, the chip connection part is built in a position communicating with the insertion port 6. In addition, a chip | tip connection part is formed so that chip | tip information can be read in the form using the detection chip | tip 99 provided with chip | tip information.
[0036]
The processing means is electrically connected to the detection chip connecting portion, electrically receives information detected by the detection chip, processes this information by calculation, etc., and blood glucose level and blood glucose level are within a normal range. Ask if there are any. The processing means includes an operation unit 9 shown in FIG. The operation unit 9 is used for inputting data related to a blood sample and a detection chip in addition to a measurement start signal, and instructing an output method from an output unit described later. An input terminal that can be connected to a personal computer, a telephone line, or the like may be provided.
The output means is a known means for outputting the processing result by the processing means as sound, display, or electrical information. In this embodiment, as shown in FIG. 1, the display part 8 which outputs a result visually with a character, a number, etc. is provided. Although not shown, an output terminal that can be connected to a speaker, a personal computer, a telephone line, or the like can be provided.
[0037]
Next, a method for collecting blood using this blood glucose level meter 1 and measuring the blood glucose level will be described with reference to FIGS.
First, the arrangement of the set member 11, the firing member 41, and the puncture member 51 at all times will be described with reference to FIG. The set member 11 is urged upward by the first urging member 33, that is, in the anti-puncture direction, and the pressing portion 13 is disposed at a position protruding from the upper surface of the main body portion 4. At this time, the first locking protrusion 17 is not locked by the first fixing portion 34. The firing member 41 is urged downward by the second urging member 45, that is, in the puncturing direction, and the second locking projection 43 is locked by the second fixing portion 36 and fixed at the uppermost position. ing. The puncture member 51 is regulated in position downward by the lower end of the firing member 41, and is disposed at a position where the lower surface of the pedestal 51 a of the puncture member 51 contacts the receiving portion 20 of the holding portion 19.
[0038]
In order to measure the blood glucose level, first, as shown in the middle part of FIG. 7, the detection chip 99 is inserted into the insertion slot 6 of the blood glucose meter 1, and the set member 11 is pushed in the puncturing direction (downward in FIG. 7). Thereby, the set member 11 is moved downward from the position shown in FIG. 2 to the lowest position shown in FIG. 8, that is, the set position. At the set position, the first locking protrusion 17 is locked to the first fixing portion 34 and the entire set member 11 is fixed. The holding portion 19 of the set member 11 abuts against the seal member 55 at its lower end and pushes it downward to place the seal member 55 further downward. At this time, the firing member 41 does not move because the second locking protrusion 43 is fixed by the second locking portion 36. Thereby, since the firing member 41 moves upward relative to the pressing portion 13, the second urging member 45 is contracted, and a larger force for urging the firing member 41 in the puncture direction is stored. The At this time, the puncture member 51 is released from the downward pressing by the firing member 41 and is lifted with respect to the holding portion 19 by the urging force of the fourth urging member 52, so that the puncture member 51 is stable at an intermediate position of the holding portion 19 Placed in.
[0039]
Next, as shown in the lower part of FIG. 7, the contact member 71 of the blood glucose meter 1 is pressed against the skin, and then the release member 61 is pushed to puncture the puncture needle 81 as shown in the upper part of FIG. In addition to drawing out, blood (body fluid) can be exuded by forming an applied pressure. In the blood glucose meter 1 of the present embodiment, the release member 61 can be pressed to operate from the state shown in FIGS. 13 to 14 in a series of operations. Here, in order to explain the movement of the release member 61 and the operation of the other parts associated therewith, it will be explained step by step.
[0040]
By pushing the release member 61, first, as shown in FIG. 11, the second release portion 69 first rotates the claw member 37 of the second fixing portion 36. Accordingly, the fixation of the firing member 41 is released, and the firing member 41 is fired in the puncture direction by the biasing of the second biasing member 45. As a result, as shown in FIG. 13, the firing member 41 collides with the puncture member 51, and the puncture member 51 is in the lowest position against the urging of the fourth urging member 52 due to the load from the firing member 41. Move up. As a result, the puncture needle 81 of the puncture member 51 moves to a position projecting downward from the contact member 71, and the puncture needle 81 is punctured into the skin 100. Thereafter, the puncture member 51 is moved upward by the elastic force of the fourth urging member 52 and is removed from the skin 100.
[0041]
In addition, in the state of FIG. 13, by selecting each urging member such that the urging force of the second urging member 45 is stronger than the urging force of the fourth urging member 52, the first release portion In a state where 67 does not release the fixing of the set member 11, the puncture needle 81 can be formed so as to remain punctured into the skin.
[0042]
The pressing of the release member 61 causes the first release portion 67 to rotate the claw member 35 of the first fixed portion 34 continuously to the second release portion 69 as shown in FIG. Accordingly, the fixing of the set member 11 is released, and the set member 11 is pulled back upward in the anti-puncture direction by the urging of the first urging member 33. As a result, the puncture member 51 held by the holding portion 19 also moves upward, and the seal member 55 is pulled up by the puncture member 51 to the position shown in FIG. This state is the middle stage of FIG.
[0043]
Here, the seal member 55 moves upward while being in close contact with both the contact member 71 and the puncture member 5. For this reason, the volume of the sealed space formed by the puncture member 51, the seal member 55, the contact member 71, and the skin 100 increases, and the inside becomes a negative pressure. Thereby, blood exudes well from the part damaged by the puncture needle 81.
[0044]
Thereafter, the blood glucose meter 1 is separated from the skin, and as shown in the lower part of FIG. 9, the detection portion of the detection chip is brought into contact with the exuded blood, the measurement switch is turned on, and measurement is started. Thereby, the processing means receives the information from the detection chip, obtains the blood sugar level, etc., and outputs it by the output means (display unit 8), and the blood sugar level measurement is completed.
[0045]
According to the blood glucose meter 1, the set member 11 and the firing member 41 can be fixed at the set position and the firing position, respectively, before coming into contact with the skin, and setting to these positions is easy. In particular, the pressing operation against the first and second urging members 33 and 45 requires a predetermined force, but the blood glucose meter 1 performs this pressing operation in a state where it does not contact the skin. Easy to do.
Further, after the blood glucose meter 1 having each member fixed at a predetermined position in this manner is pressed against the skin, it is possible to perform puncture and subsequent pull back simply by pressing the button-type release member 61. Easy to operate. Since puncturing and pulling back can be performed with a single operation, the number of operations involving mental pain is reduced.
[0046]
In addition, the release member 61 only releases the fixation of the set member 11 and the firing member 41, and the movement of the release member 61 may be smaller than the movement of the set member 11 and the launch member 41, so that the operability is improved. In particular, the release member 61 is moved in a direction perpendicular to the puncture direction, and can be easily operated while being pressed against the skin. In addition, since the direction is different from the puncture direction, there is little image of piercing the skin, and reduction of mental pain can be expected.
Furthermore, the release member 61 is configured such that the release of the firing member 41 can be released earlier than the release of the set member 11, so that the first biasing member 33 is attached to the puncture member 51 at the moment of puncturing the skin. Does not work. For this reason, it is the structure which can always perform the puncture of the same depth stably.
[0047]
Furthermore, a sealing member is provided so that a sealed space can be formed by a partition part (in this embodiment, the inner surface of the contact member 71, the puncture member 51, and the seal member 55) in the main body where the skin and the puncture needle are present. Due to the increase in the volume associated with the pulling-back 55, the skin portion damaged by the puncture can be made negative. Thereby, the exudation (outflow) of blood can be promoted favorably. In particular, in the blood glucose meter 1, since the puncture member 51 and the seal member 55 can be arranged at a position close to the puncture side before being brought into contact with the skin, the volume can be increased by the return operation after the puncture, and the air bleeding means Do not need.
Further, the portion of the main body 4 that contacts the skin is configured by a contact member 71 that is separate from the case 3, and the amount of protrusion can be adjusted by rotation. The puncture amount of the puncture needle 81 can be adjusted. For this reason, the structure of the blood collection apparatus 10 is simple. The contact member 71 is formed as a separate body and is detachable, so that it can be easily washed when blood that has flowed out by blood collection adheres.
[0048]
In addition, this invention is not limited to the said embodiment.
A blood glucose meter provided with a separate measurement unit may be used. Moreover, it is not limited to blood glucose level measurement, It can be set as the blood collection apparatus utilized in the various cases which measure biological information from bodily fluids, such as blood. The shape and configuration of the detection chip and the configuration of the measurement unit can be in the form of a known blood glucose meter or biological information measurement device, and are not limited to the above embodiment.
The 1st and 2nd cancellation | release member may be comprised by the separate member. In addition, for example, a single member capable of two-stage operation, such as a button having a two-stage push amount and a lever that can move in two directions, can be punctured and pulled back in two stages. It may be.
Further, the configuration for fixing and releasing the setting member 11 and the firing member 41 is not limited to the present embodiment. For example, the configuration may be such that the set member 11 and the firing member 41 are provided with protrusions, and the set member 11 and the launch member 41 are rotated to release the fixation. In such a configuration, no release member is required.
Further, in this embodiment, the puncture member 51 is configured to be held at a predetermined height at the set position by the fourth biasing member 52, but even if the position of the puncture member 51 is controlled by another configuration. Of course it is good. For example, as shown in FIG. 15, the sealing member 55 is not provided with the rigid ring 56, but is formed of a flexible rubber member so that the sealing member 55 can hold the puncture member 51 in the set position. May be.
[0049]
【The invention's effect】
In the present invention, by providing a blood collection device and a blood glucose meter with simpler operations for puncturing and pulling back, the blood collection operation can be facilitated or mental pain can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan view of a blood glucose meter according to an embodiment of the present invention.
2 is a side sectional view of a blood collection device portion of the blood glucose meter of FIG. 1. FIG.
3 is a longitudinal sectional view of a blood collection device portion of the blood glucose meter of FIG. 1. FIG.
4 is an exploded view showing an abutting member of the blood glucose meter of FIG. 1 and its surroundings. FIG.
5 is a partial cross-sectional view showing a state where a puncture needle is attached to a puncture member of a blood glucose meter using an embodiment of a puncture needle kit that can be used in the blood glucose meter of FIG. 1. FIG.
6 is a partial cross-sectional view showing a state where the puncture needle used in the blood glucose meter is removed and accommodated using the puncture needle kit of FIG. 5. FIG.
7 is a schematic diagram showing the first half of a process for measuring a blood glucose level using the blood glucose level meter of FIG. 1. FIG.
FIG. 8 is a cross-sectional view showing a state in which a blood collection device of a blood glucose meter is set.
FIG. 9 is a schematic diagram showing the latter half of the process for measuring blood glucose level using the blood glucose level meter of FIG. 1;
FIG. 10 is a partial cross-sectional view showing the positional relationship between the release member, the first fixing portion, and the second fixing portion in the normal state in the blood glucose meter of FIG. 1;
11 is a partial cross-sectional view showing a positional relationship between a release member in the middle of pressing, a first fixing portion, and a second fixing portion in the blood glucose meter of FIG. 1. FIG.
12 is a partial cross-sectional view showing the positional relationship between the release member that is completely pushed in, the first fixing portion, and the second fixing portion in the blood glucose meter of FIG. 1. FIG.
13 is a cross-sectional view showing how the puncture needle is punctured in the blood glucose meter of FIG. 1. FIG.
14 is a cross-sectional view showing how the puncture needle is pulled back in the blood glucose meter of FIG. 1. FIG.
FIG. 15 is a partial sectional view of a blood collection device for a blood glucose meter according to another embodiment of the present invention.
[Explanation of symbols]
1 Blood glucose meter
3 cases
4 Body
6 insertion slot
8 Display section
9 Operation part
9a button
10 Blood collection device
11 Set members
13 Pressing part
13b Base holding part
15 base
15a flange
17 First locking projection
18 Long hole
19 Holding part
19a flange
20 Receiver
31 Support member
32 Groove
33 First biasing member
34 First fixing portion
36 2nd fixing | fixed part
34a, 36a extension
34b, 36b Restriction member
35, 37 Claw member
37a recess
39 Supporting part
41 Firing member
43 Second locking projection
45 Second biasing member
51 Puncture member
51a pedestal
52 4th biasing member
53 Needle holder
53a Detachable part
53b Locking piece
53c Convex
55 Sealing member
56 Rigid ring
58 Sealing part
61 Release member
63 Cap part
63a Retaining
65 Expanding part
67 1st release part
69 Second release part
70 Third biasing member
71 Contact member
72 engaging part
75 Receiving surface
76 engagement receiver
80 Puncture needle kit
81 Puncture needle
82 Needle base
82a Groove
82b recess
84 Needle
86 cartridges
87 Partition
89 Housing before use
91 Housing after use
91a Claw
93 Measuring unit
99 detection chip
100 skin

Claims

A blood collection device comprising a replaceable puncture needle,
When the puncture needle is punctured into the skin, a main body that comes into contact with the skin;
A set member that is slidable in the puncture direction with respect to the main body and is biased toward the anti-puncture side, and can be fixed at a set position that is located closest to the puncture side
A firing member that is slidable in the puncture direction with respect to the set member and is biased toward the puncture side, and can be fixed at a firing position located on the most anti-puncture side;
The puncture needle is provided, is slidable in the puncture direction with respect to the set member, can be held at a position that does not protrude from the main body when the set member is in the set position, and A blood collection device comprising: a puncture member that protrudes from the main body portion and is moved to a position where the skin can be punctured by firing in the puncture direction.

A movable first release member for releasing the fixation of the set member to the set position;
The blood collection device according to claim 1, further comprising a movable second release member for releasing the fixation of the launch member to the launch position.

The blood collecting apparatus according to claim 2, wherein the first releasing member and the second releasing member are integrated so that the moving directions for releasing the fixation are the same.

The main body is provided so that the amount of protrusion in the puncture direction of the portion that comes into contact with the skin can be adjusted.
The blood collection device according to any one of claims 1 to 3.

The blood collection device according to any one of claims 1 to 4,
A detection chip that is replaceable and capable of detecting information related to blood sugar in contact with blood;
The detection chip is provided so as to be electrically connectable, receives and processes information relating to blood glucose detected by the detection chip, and outputs a blood glucose level and / or a calculation result calculated based on the blood glucose level A blood glucose meter that is integrally provided with a measuring unit.