JP6714419B2 - Flow control chip and infusion set - Google Patents

Flow control chip and infusion set Download PDF

Info

Publication number
JP6714419B2
JP6714419B2 JP2016079296A JP2016079296A JP6714419B2 JP 6714419 B2 JP6714419 B2 JP 6714419B2 JP 2016079296 A JP2016079296 A JP 2016079296A JP 2016079296 A JP2016079296 A JP 2016079296A JP 6714419 B2 JP6714419 B2 JP 6714419B2
Authority
JP
Japan
Prior art keywords
infusion
infusion solution
flow
control chip
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2016079296A
Other languages
Japanese (ja)
Other versions
JP2017189277A (en
Inventor
幸二 野口
幸二 野口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Enplas Corp
Original Assignee
Enplas Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Enplas Corp filed Critical Enplas Corp
Priority to JP2016079296A priority Critical patent/JP6714419B2/en
Publication of JP2017189277A publication Critical patent/JP2017189277A/en
Application granted granted Critical
Publication of JP6714419B2 publication Critical patent/JP6714419B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Description

この発明は、輸液（点滴）等に使用されて、輸注液等の流体を所定量だけ流動させることを可能にする流量制御チップ、及びこの流量制御チップを備えた輸液セットに関する。 The present invention relates to a flow rate control chip that is used for infusion (infusion) or the like and allows a fluid such as an infusion solution to flow by a predetermined amount, and an infusion set including this flow rate control chip.

従来から、患者への薬剤等の投与には、輸液セット（点滴セット）を使用した輸液（点滴）が行われている。この輸液セットを使用した輸液は、単位時間当たりの薬剤等の投与量（輸液速度）が医師によって決定され、看護師が医師の決定通りの輸液速度になるように輸液セットを操作している。 2. Description of the Related Art Conventionally, infusion of a drug or the like to a patient has been performed using an infusion set (infusion set). For an infusion using this infusion set, a doctor determines the dose (infusion rate) of a drug or the like per unit time, and a nurse operates the infusion set so that the infusion rate is as determined by the doctor.

図６は、従来の輸液セット１００の使用状態を示す図である。この図６に示すように、輸液セット１００は、輸液スタンド（図示せず）に吊された輸液ボトル１０１に差し込まれるボトル針１０２と、ボトル針１０２が一端に取り付けられたチューブ１０３と、このチューブ１０３の他端に取り付けられて患者の体に差し込まれる留置針１０４と、ボトル針１０２と留置針１０４との間に配置される点滴筒１０５と、点滴筒１０５と留置針１０４との間に配置されるクレンメ１０６と、を備えている。この図６に示す輸液セット１００において、クレンメ１０６は、輸液速度を調整する機能を有している。また、点滴筒１０５は、輸液に使用する輸注液（薬剤、栄養剤、血液等）の滴下数を観察する部分であり、看護師等が輸注液の滴下数を観察することにより輸液速度を知ることができるようになっている。 FIG. 6 is a diagram showing a usage state of the conventional infusion set 100. As shown in FIG. 6, the infusion set 100 includes a bottle needle 102 to be inserted into an infusion bottle 101 suspended from an infusion stand (not shown), a tube 103 having the bottle needle 102 attached to one end, and this tube. An indwelling needle 104 attached to the other end of 103 and inserted into the patient's body, an infusion tube 105 disposed between the bottle needle 102 and the indwelling needle 104, and an infusion tube 105 and the indwelling needle 104 It is provided with the clamp 106. In the infusion solution set 100 shown in FIG. 6, the clamp 106 has a function of adjusting the infusion rate. Further, the drip cylinder 105 is a portion for observing the number of drops of the infusion solution (medicine, nutrient, blood, etc.) used for the infusion, and the nurse or the like knows the infusion rate by observing the number of drops of the infusion solution. You can do it.

図７に示すように、クレンメ１０６は、チューブ１０３がクランプ本体１０７の内部空間に挿通され、ローラ１０８の回転軸１１０がクランプ本体１０７の内部側壁１１１に形成された案内溝１１２にスライド可能に係合され、ローラ１０８が案内溝１１２に沿ってスライド移動させられることにより、ローラ１０８の外周面とクランプ本体１０７のチューブ支持壁１１３との間隔が変化し、ローラ１０８の外周面とチューブ支持壁１１３との間に位置するチューブ１０３の潰し量が変化して、チューブ１０３内を流動する輸注液の絞り量が変えられ、輸液速度が調整される（特許文献１参照）。 As shown in FIG. 7, in the clamp 106, the tube 103 is inserted into the inner space of the clamp body 107, and the rotation shaft 110 of the roller 108 is slidably engaged with the guide groove 112 formed in the inner side wall 111 of the clamp body 107. As the rollers 108 are slid along the guide groove 112, the distance between the outer peripheral surface of the roller 108 and the tube support wall 113 of the clamp body 107 changes, and the outer peripheral surface of the roller 108 and the tube support wall 113 change. The crushing amount of the tube 103 located between and changes, and the squeezing amount of the infusion solution flowing in the tube 103 is changed, and the infusion rate is adjusted (see Patent Document 1).

特開２００２−３３６３５１号公報JP, 2002-336351, A

しかしながら、従来の輸液セット１００は、クレンメ１０６のローラ１０８が人為的に操作されることにより、輸液速度が調整されるようになっているため、輸液速度の調整にミスが生じやすい。また、従来の輸液セット１００は、患者等の第３者（医師、看護師等の医療従事者以外の者）によってクレンメ１０６のローラ１０８が不正操作され易く、輸液速度が適正な速度からずらされて、医療事故を生じやすくなる。 However, in the conventional infusion set 100, the infusion rate is adjusted by manipulating the roller 108 of the clamp 106, so that an error in the infusion rate adjustment is likely to occur. Further, in the conventional infusion set 100, the roller 108 of the clamp 106 is easily manipulated by a third person such as a patient (a person other than a medical worker such as a doctor or a nurse), and the infusion rate is deviated from an appropriate rate. Therefore, a medical accident is likely to occur.

そこで、本発明は、人為的操作に起因する輸液速度の調整ミスを防止でき、患者等の第３者による輸液セットの不正操作を防止できる流量制御チップ及びこれを備えた輸液セットを提供する。 Therefore, the present invention provides a flow rate control chip capable of preventing a mistake in adjusting the infusion rate due to an artificial operation and preventing an illicit operation of the infusion set by a third party such as a patient, and an infusion set including the same.

本発明に係る流量制御チップ１，３１は、輸注液が収容された輸液ボトル３に接続されるチューブ５の途中に配置され、前記チューブ５を流動する前記輸注液の流動速度を一定に保持する減圧流路２０，４４が内部に設けられると共に、前記輸注液を溜めることができる輸注液溜まり２１，４３が内部に設けられている。そして、前記減圧流路２０，４４は、前記輸注液の流動方向に沿った下流端が前記輸注液溜まり２１，４３に接続されている。また、前記輸注液溜まり２１，４３は、メッシュフィルタ２４，４５によって第１室２５，４６と第２室２６，４７とに分けられている。また、前記第１室２４，４５には、前記減圧流路２０，４４の下流端が接続されている。また、前記第２室２６，４７には、前記メッシュフィルタ２４，４５を通過した前記輸注液を前記輸注液の流動方向下流側へ供給する輸注液供給路２８，５０が接続されている。
The flow rate control chips 1 and 31 according to the present invention are arranged in the middle of the tube 5 connected to the infusion bottle 3 containing the infusion solution, and keep the flow rate of the infusion solution flowing through the tube 5 constant. Rutotomoni vacuum passages 20, 44 is provided inside the infusion solution reservoir 21,43 which transfusion fluid can accumulate is provided inside. Further, the depressurized flow paths 20 and 44 are connected at their downstream ends along the flow direction of the infusion liquid to the infusion liquid reservoirs 21 and 43. The infusion solution reservoirs 21 and 43 are divided into first chambers 25 and 46 and second chambers 26 and 47 by mesh filters 24 and 45. Further, the first chambers 24 and 45 are connected to the downstream ends of the decompression flow paths 20 and 44. Further, the second chambers 26 and 47 are connected to infusion liquid supply passages 28 and 50 for supplying the infusion liquid that has passed through the mesh filters 24 and 45 to the downstream side in the flow direction of the infusion liquid.

また、本発明に係る輸液セット２，３２は、流量制御チップ１，３１と、前記流量制御チップ１，３１よりも輸注液の流動方向下流側のチューブ５に配置され、前記チューブ５の流路を開閉する開閉弁７と、を備えたことを特徴としている。 The infusion sets 2 and 32 according to the present invention are arranged in the flow rate control chips 1 and 31 and the tube 5 downstream of the flow rate control chips 1 and 31 in the flow direction of the infusion solution, and the flow path of the tube 5 is set. And an on-off valve 7 for opening and closing.

本発明によれば、減圧流路によって所定の輸液速度に保持されるため、人為的操作による輸液速度調整が不要になり、人為的操作に起因する輸液速度の調整ミスを防止でき、患者等の第３者による輸液セットの不正操作を防止することができる。 According to the present invention, since the predetermined infusion rate is maintained by the depressurized flow path, the infusion rate adjustment by the artificial operation is not necessary, and the infusion rate adjustment error due to the artificial operation can be prevented, and the patient etc. It is possible to prevent an illicit operation of the infusion set by a third party.

本発明の第１実施例に係る流量制御チップ及びこの流量制御チップを備えた輸液セットの使用状態を示す図である。It is a figure which shows the use condition of the flow control chip which concerns on 1st Example of this invention, and the infusion set provided with this flow control chip. 流量制御チップの詳細を示す図であり、図２（ａ）は流量制御チップの正面図、図２（ｂ）は図２（ａ）のＡ１−Ａ１線に沿って切断して示す流量制御チップの断面図、図２（ｃ）は流量制御チップの背面図、図２（ｄ）は図２（ａ）の矢印Ｂ１方向から見た流量制御チップの平面図である。It is a figure which shows the detail of a flow control chip, FIG.2(a) is a front view of a flow control chip, FIG.2(b) shows the flow control chip cut|disconnected and shown along the A1-A1 line of FIG.2(a). 2C is a rear view of the flow rate control chip, and FIG. 2D is a plan view of the flow rate control chip seen from the direction of arrow B1 in FIG. 2A. 流量制御チップの詳細を示す図であり、図３（ａ）は輸注液の流動状態を示す流量制御チップの正面図（図２（ａ）に対応する図）、図３（ｂ）は輸注液の流動状態を示す流量制御チップの断面図（図２（ｂ）に対応する図）、図３（ｃ）は輸注液の流動状態を示す流量制御チップの背面図である。It is a figure which shows the detail of a flow control chip, FIG.3(a) is a front view (figure corresponding to FIG.2(a)) of a flow control chip which shows the flow state of infusion liquid, FIG.3(b) is infusion liquid. FIG. 3(c) is a rear view of the flow rate control chip showing the flow state of the infusion solution, and FIG. 3(c) is a sectional view of the flow rate control chip showing the flow state of FIG. 本発明の第２実施例に係る流量制御チップ及びこの流量制御チップを備えた輸液セットの使用状態を示す図である。It is a figure which shows the use condition of the flow control chip which concerns on 2nd Example of this invention, and the infusion set provided with this flow control chip. 流量制御チップの詳細を示す図であり、図５（ａ）は流量制御チップの正面図、図５（ｂ）は図５（ａ）のＡ２−Ａ２線に沿って切断して示す流量制御チップの断面図、図５（ｃ）は図５（ａ）の矢印Ｂ２方向から見た流量制御チップの平面図である。It is a figure which shows the detail of a flow control chip, FIG.5(a) is a front view of a flow control chip, FIG.5(b) shows the flow control chip cut|disconnected and shown along the A2-A2 line of FIG.5(a). FIG. 5C is a plan view of the flow rate control chip viewed from the direction of arrow B2 in FIG. 従来の輸液セットの使用状態を示す図である。It is a figure which shows the use condition of the conventional infusion set. 従来の輸液セットを構成するクレンメの断面図である。It is sectional drawing of the clamp which comprises the conventional infusion set.

以下、本発明の実施例を図面に基づき詳述する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

［第１実施例］
図１は、本発明の第１実施例に係る流量制御チップ１及びこの流量制御チップ１を備えた輸液セット２の使用状態を示す図である。この図１に示すように、輸液セット２は、輸液スタンド（図示せず）に吊された輸液ボトル３に差し込まれるボトル針４と、ボトル針４が一端に取り付けられたチューブ５と、チューブ５の他端に取り付けられて患者の体に差し込まれる留置針６と、ボトル針４と留置針６とを接続するチューブ５の途中に配置される流量制御チップ１と、流量制御チップ１と留置針６との間のチューブ５に配置される開閉弁７と、を備えている。この図１に示す輸液セット２は、図６に示した従来の輸液セット１００と比較して、従来の輸液セット１００の点滴筒１０５とクレンメ１０６を流量制御チップ１と開閉弁７に置き換えた構成になっている。 [First embodiment]
FIG. 1 is a diagram showing a usage state of a flow rate control chip 1 and an infusion set 2 including the flow rate control chip 1 according to the first embodiment of the present invention. As shown in FIG. 1, the infusion set 2 includes a bottle needle 4 to be inserted into an infusion bottle 3 suspended from an infusion stand (not shown), a tube 5 having the bottle needle 4 attached to one end, and a tube 5. Indwelling needle 6 attached to the other end of the patient and inserted into the patient's body, a flow control chip 1 disposed in the middle of a tube 5 connecting the bottle needle 4 and the indwelling needle 6, the flow control chip 1 and the indwelling needle And an on-off valve 7 arranged on the tube 5 between the on-off valve 6 and the tube 5. Compared with the conventional infusion set 100 shown in FIG. 6, the infusion set 2 shown in FIG. 1 has a configuration in which the drip tube 105 and the clamp 106 of the conventional infusion set 100 are replaced with a flow rate control chip 1 and an opening/closing valve 7. It has become.

図２乃至図３は、流量制御チップ１の詳細を示す図である。なお、図２（ａ）は流量制御チップ１の正面図、図２（ｂ）は図２（ａ）のＡ１−Ａ１線に沿って切断して示す流量制御チップ１の断面図、図２（ｃ）は流量制御チップ１の背面図、図２（ｄ）は図２（ａ）の矢印Ｂ１方向から見た流量制御チップ１の平面図である。また、図３（ａ）は輸注液の流動状態を示す流量制御チップ１の正面図（図２（ａ）に対応する図）、図３（ｂ）は輸注液の流動状態を示す流量制御チップ１の断面図（図２（ｂ）に対応する図）、図３（ｃ）は輸注液の流動状態を示す流量制御チップ１の背面図である。 2 to 3 are diagrams showing details of the flow rate control chip 1. 2A is a front view of the flow rate control chip 1, FIG. 2B is a cross-sectional view of the flow rate control chip 1 taken along the line A1-A1 of FIG. 2A, and FIG. 2C is a rear view of the flow rate control chip 1, and FIG. 2D is a plan view of the flow rate control chip 1 seen from the arrow B1 direction in FIG. 3(a) is a front view of the flow rate control chip 1 showing the flow state of the infusion liquid (a view corresponding to FIG. 2(a)), and FIG. 3(b) is a flow rate control chip showing the flow state of the infusion liquid. 1 is a cross-sectional view (corresponding to FIG. 2B) and FIG. 3C is a rear view of the flow rate control chip 1 showing a flow state of the infusion solution.

これらの図に示す流量制御チップ１は、合成樹脂材料（例えば、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、ポリアミド（ＰＡ））で形作られたチップ本体８と、チップ本体８の正面側を覆うように固定された弾性変形可能で且つ透明な合成樹脂材料（例えば、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、ポリアミド（ＰＡ））製の第１フィルム１０と、チップ本体８の裏面側を覆うように固定された弾性変形可能で且つ透明な合成樹脂材料（例えば、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、ポリアミド（ＰＡ））製の第２フィルム１１と、を備えている。 The flow rate control chip 1 shown in these figures covers the chip body 8 formed of a synthetic resin material (for example, polyethylene (PE), polypropylene (PP), polyamide (PA)) and the front side of the chip body 8. The first film 10 made of an elastically deformable and transparent synthetic resin material (for example, polyethylene (PE), polypropylene (PP), polyamide (PA)) fixed to and the back side of the chip body 8 are covered. A second film 11 made of a fixed elastically deformable and transparent synthetic resin material (for example, polyethylene (PE), polypropylene (PP), polyamide (PA)) is provided.

チップ本体８は、正面形状が略矩形形状の板状体である輸注液流路形成部１２と、輸注液流路形成部１２の長手方向（Ｙ軸方向）一端側に一体に形成されたパイプ状の輸注液導入路形成部１３と、輸注液流路形成部１２の長手方向（Ｙ軸方向）他端側に一体に形成されたパイプ状の輸注液供給路形成部１４と、を有している。 The chip body 8 is a plate integrally formed on one end side in the longitudinal direction (Y-axis direction) of the infusion solution flow passage forming portion 12 which is a plate-shaped body having a substantially rectangular front shape. And a pipe-shaped infusion solution supply path forming section 14 integrally formed on the other end side of the infusion solution flow path forming section 12 in the longitudinal direction (Y-axis direction). ing.

輸注液導入路形成部１３は、ボトル針４から延びるチューブ５の端部が嵌合され、輸液ボトル３内の輸注液をチューブ５を介して輸注液流路形成部１２の内部空間（第１輸注液溜まり１５）に導入する輸注液導入路１６が形成されている。また、輸注液導入路形成部１３は、嵌合されたチューブ５が抜けるのを防止するためのリング状の第１抜け止め突起１７が外周面に形成されている。この第１抜け止め突起１７は、外表面が円弧形状であり、チューブ５を弾性変形させた状態で円滑に嵌合できるようになっている。 The end portion of the tube 5 extending from the bottle needle 4 is fitted into the infusion solution introduction passage forming portion 13, and the infusion solution in the infusion bottle 3 is passed through the tube 5 to the internal space of the infusion solution passage forming portion 12 (first An infusion solution introducing passage 16 is formed to be introduced into the infusion solution reservoir 15). In addition, the infusion solution introducing passage forming portion 13 is formed with a ring-shaped first retaining protrusion 17 on the outer peripheral surface for preventing the fitted tube 5 from coming off. The outer surface of the first retaining protrusion 17 has an arcuate shape so that the tube 5 can be smoothly fitted in the elastically deformed state of the tube 5.

輸注液流路形成部１２は、輸注液導入路１６に連通する第１輸注液溜まり１５が一端側に形成されている。この第１輸注液溜まり１５は、輸注液流路形成部１２の表裏に開口する矩形形状の穴であり、輸注液流路形成部１２の表裏の開口部分が第１フィルム１０及び第２フィルム１１で塞がれている。また、輸注液流路形成部１２は、第１輸注液溜まり１５と第２輸注液溜まり１８とを接続するラビリンス状の減圧流路２０が形成されている。この減圧流路２０は、表面側と裏面側の２層構造であり、第１輸注液溜まり１５から表面側の第１減圧流路部２０ａに流れ込んだ輸注液が第１接続路２０ｂを介して裏面側の第２減圧流路部２０ｃに案内され、第２減圧流路部２０ｃを流れた輸注液が第２接続路２０ｄを介して裏面側の第３減圧流路部２０ｅに案内され、第３減圧流路部２０ｅを流れた輸注液が第３接続路２０ｆを介して表面側の第４減圧流路部２０ｇに案内され、第４減圧流路部２０ｇを流れた輸注液が第４接続路２０ｈを介して表面側の第５減圧流路部２０ｉに案内され、第５減圧流路部２０ｉを流れた輸注液が第５接続路２０ｊを介して第２輸注液溜まり１８に滴下するようになっている。この減圧流路２０は、第１乃至第５減圧流路部２０ａ，２０ｃ，２０ｅ，２０ｇ，２０ｉが規則的に複数折れ曲がりながら延びる狭い流路になっている。そして、この減圧流路２０は、第１輸注液溜まり１５内の輸注液が所定の時間内に所定数（所定量）だけ第２輸注液溜まり１８に滴下するように（所定の輸液速度になるように）、流路幅、流路深さ、及び流路長さが設定されている。なお、図３において、輸注液の流動方向を太い線の矢印で示してある。 The infusion liquid flow path forming portion 12 has a first infusion liquid reservoir 15 that is in communication with the infusion liquid introduction passage 16 at one end side. The first infusion solution reservoir 15 is a rectangular hole that opens on the front and back sides of the infusion solution flow path forming portion 12, and the opening portions on the front and back sides of the infusion solution flow path forming portion 12 are the first film 10 and the second film 11. Is blocked by. In addition, the infusion solution flow path forming portion 12 is formed with a labyrinth-like decompression flow path 20 that connects the first infusion solution pool 15 and the second infusion solution pool 18. The decompression flow path 20 has a two-layer structure of a front surface side and a back surface side, and the infusion liquid that has flowed from the first infusion solution reservoir 15 into the first decompression flow path portion 20a on the front surface side passes through the first connection passage 20b. The infusate, which is guided to the second pressure reducing flow passage portion 20c on the back surface side and flows through the second pressure reducing flow passage portion 20c, is guided to the third pressure reducing flow passage portion 20e on the back surface side via the second connection passage 20d, The infusion solution that has flowed through the third decompression flow path portion 20e is guided to the front side fourth decompression flow path portion 20g via the third connection path 20f, and the infusion fluid that has flowed through the fourth decompression flow path portion 20g makes the fourth connection. The infusion liquid guided by the fifth decompression flow passage portion 20i on the front surface side via the passage 20h and flowing through the fifth decompression flow passage portion 20i is dropped into the second infusion liquid reservoir 18 via the fifth connection passage 20j. It has become. The decompression flow path 20 is a narrow flow path in which the first to fifth decompression flow path portions 20a, 20c, 20e, 20g, 20i extend while being regularly bent. Then, the decompression flow path 20 allows the infusion liquid in the first infusion liquid reservoir 15 to drop into the second infusion liquid reservoir 18 by a predetermined number (predetermined amount) within a predetermined time (at a predetermined infusion speed). As described above), the flow channel width, the flow channel depth, and the flow channel length are set. In FIG. 3, the flow direction of the infusion solution is indicated by a thick line arrow.

また、輸注液流路形成部１２は、第２輸注液溜まり１８と第３輸注液溜まり２１とを第６接続路２２を介して接続している。第２輸注液溜まり１８は、輸注液流路形成部１２の表裏に開口する矩形形状の穴であり、輸注液流路形成部１２の表裏の開口部分が第１フィルム１０及び第２フィルム１１によって塞がれている。この第２輸注液溜まり１８は、外部から内部の輸注液２３の滴下状態を観察できるようになっており、看護師等が輸注液２３の滴下状態を視覚的に確認することができる（図３参照）。第３輸注液溜まり２１は、輸注液流路形成部１２の表裏に開口する丸穴であり、輸注液流路形成部１２の他端側に形成され、輸注液流路形成部１２の表裏の開口部分が第１フィルム１０及び第２フィルム１１によって塞がれている。また、第３輸注液溜まり２１は、内部がメッシュフィルタ２４によって２室に分けられている。メッシュフィルタ２４によって分けられた第３輸注液溜まり２１の第１室２５は、第６接続路２２が開口するようになっている。また、メッシュフィルタ２４によって分けられた第３輸注液溜まり２１の第２室２６は、第６接続路２２を介して第１室２５に流れ込んだ輸注液がメッシュフィルタ２４を通過した後に流れ込むようになっている。 In addition, the infusion liquid flow path forming unit 12 connects the second infusion liquid reservoir 18 and the third infusion liquid reservoir 21 via the sixth connection passage 22. The second infusion solution reservoir 18 is a rectangular hole that opens on the front and back sides of the infusion solution flow path forming portion 12, and the opening portions on the front and back sides of the infusion solution flow path forming portion 12 are defined by the first film 10 and the second film 11. It is blocked. The second infusion solution pool 18 allows the instillation state of the infusion solution 23 inside to be observed from the outside, and a nurse or the like can visually confirm the infusion state of the infusion solution 23 (FIG. 3). reference). The third infusion solution reservoir 21 is a round hole that is opened on the front and back sides of the infusion solution flow passage formation portion 12, is formed on the other end side of the infusion fluid flow passage formation portion 12, and is formed on the front and back sides of the infusion fluid flow passage formation portion 12. The opening is closed by the first film 10 and the second film 11. Further, the inside of the third infusion solution reservoir 21 is divided into two chambers by a mesh filter 24. In the first chamber 25 of the third infusion solution reservoir 21 divided by the mesh filter 24, the sixth connection path 22 is opened. In addition, the second chamber 26 of the third infusion solution reservoir 21 divided by the mesh filter 24 is designed so that the infusion solution that has flowed into the first chamber 25 through the sixth connection path 22 flows after passing through the mesh filter 24. Has become.

メッシュフィルタ２４は、第３輸注液溜まり２１に形成されたフィルタ設置段部２７に嵌合固定され、第１室２５内に流れ込んだ輸注液内の気泡及び異物を除去し、気泡及び異物が除去された輸注液を第２室２６内に流入させるようになっている。このメッシュフィルタ２４は、円筒状の外筒２４ａの内側にフィルタ部２４ｂが形成され、フィルタ部２４ｂに四角形状の開口部が多数形成されている。このような形状及び機能を有するメッシュフィルタ２４は、合成樹脂材料（例えば、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、ポリアミド（ＰＡ））で形作されており、射出成形によって高精度に形成されている。なお、メッシュフィルタ２４は、開口部の一辺の長さが、例えば、０．１〜１．０ｍｍに形成されている。 The mesh filter 24 is fitted and fixed to the filter installation step portion 27 formed in the third infusion solution reservoir 21, removes air bubbles and foreign matters in the infusion fluid flowing into the first chamber 25, and removes air bubbles and foreign matters. The infused liquid thus prepared is allowed to flow into the second chamber 26. In this mesh filter 24, a filter portion 24b is formed inside a cylindrical outer cylinder 24a, and a large number of square openings are formed in the filter portion 24b. The mesh filter 24 having such a shape and function is formed of a synthetic resin material (for example, polyethylene (PE), polypropylene (PP), polyamide (PA)) and is formed with high precision by injection molding. There is. The mesh filter 24 is formed such that the length of one side of the opening is, for example, 0.1 to 1.0 mm.

輸注液供給路形成部１４は、開閉弁７から延びるチューブ５の端部が嵌合され、第３輸注液溜まり２１の第２室２６とチューブ５とを接続する輸注液供給路２８が形成されている。また、輸注液供給路形成部１４は、嵌合されたチューブ５が抜けるのを防止するためのリング状の第２抜け止め突起３０が外周面に形成されている。この輸注液供給路形成部１４の第２抜け止め突起３０は、輸注液導入路形成部１３の第１抜け止め突起１７と同様に、外表面が円弧形状であり、チューブ５を弾性変形させた状態で円滑に嵌合できるようになっている。 The end portion of the tube 5 extending from the on-off valve 7 is fitted to the infusion solution supply passage forming portion 14, and an infusion solution supply passage 28 that connects the second chamber 26 of the third infusion solution reservoir 21 and the tube 5 is formed. ing. In addition, the infusion solution supply passage forming portion 14 is provided with a ring-shaped second retaining protrusion 30 on the outer peripheral surface for preventing the fitted tube 5 from coming off. Similar to the first retaining protrusion 17 of the infusion solution introducing passage forming portion 13, the second retaining protrusion 30 of the infusion solution supplying passage forming portion 14 has an arcuate outer surface and elastically deforms the tube 5. It can be fitted smoothly in this state.

第１フィルム１０及び第２フィルム１１は、輸注液流路形成部１２の正面形状と同一の形状（略矩形形状）であり、同一の合成樹脂材料で同一の肉厚に形成されている。したがって、本実施例の流量制御チップ１は、輸注液流路形成部１２の正面側に第１フィルム１０を固定し、輸注液流路形成部１２の裏面側に第２フィルム１１を固定する場合に限定されず、輸注液流路形成部１２の正面側に第２フィルム１１を固定し、輸注液流路形成部１２の裏面側に第１フィルム１０を固定するようにしてもよい。 The first film 10 and the second film 11 have the same shape (substantially rectangular shape) as the front shape of the infusion solution flow path forming portion 12, and are formed of the same synthetic resin material and have the same thickness. Therefore, in the flow rate control chip 1 of the present embodiment, the first film 10 is fixed on the front side of the infusion solution flow path forming part 12 and the second film 11 is fixed on the back side of the infusion solution flow path forming part 12. However, the second film 11 may be fixed to the front surface side of the infusion liquid flow path forming portion 12 and the first film 10 may be fixed to the back surface side of the infusion liquid flow path forming portion 12.

このような構成の流量制御チップ１を備えた輸液セット２は、開閉弁７でチューブ５の流路を閉じた状態でボトル針４を輸液ボトル３に差し込み、流量制御チップ１の第１フィルム１０及び第２フィルム１１を第２輸注液溜まり１８の内方へ押し込むように複数回揉むことにより、輸注液が第５接続路２０ｊから第２輸注液溜まり１８に滴下して溜まる。そして、この流量制御チップ１を備えた輸液セット２は、輸注液が第２輸注液溜まり１８の空間に１／３〜１／２程度溜まると、開閉弁７でチューブ５の流路を開き、輸注液を留置針６の先端まで満たした後、留置針６を患者の体（腕等）に差し込み、輸液が開始されるようになっている。 In the infusion solution set 2 including the flow rate control chip 1 having such a configuration, the bottle needle 4 is inserted into the infusion solution bottle 3 with the opening/closing valve 7 closing the flow path of the tube 5, and the first film 10 of the flow rate control chip 1 is inserted. By rubbing the second film 11 a plurality of times so as to push it inward of the second infusion liquid reservoir 18, the infusion liquid is dripped and accumulated in the second infusion liquid reservoir 18 from the fifth connection passage 20j. Then, in the infusion solution set 2 including the flow rate control chip 1, when the infusion solution accumulates in the space of the second infusion solution reservoir 18 about 1/3 to 1/2, the opening/closing valve 7 opens the flow path of the tube 5, After the infusion solution has been filled to the tip of the indwelling needle 6, the indwelling needle 6 is inserted into the patient's body (arm or the like) to start the infusion.

このような本実施例に係る流量制御チップ１は、輸注液を減圧流路２０で減圧して第２輸注液溜まり１８内に所定の速度で滴下することが可能となり、輸液速度を一定速度に保持できるため、人為的操作による輸液速度調整が不要になり、人為的操作に起因する輸液速度の調整ミスを防止でき、患者等の第３者による輸液セット２の不正操作を防止できる。なお、流量制御チップ１は、輸液速度毎に用意されており、医師の指示に従った輸液速度のものが選択されて使用される。 In the flow rate control chip 1 according to the present embodiment as described above, the infusion liquid can be depressurized in the depressurization flow path 20 and dropped into the second infusion liquid reservoir 18 at a predetermined speed, and the infusion speed can be kept constant. Since the liquid can be held, it is not necessary to adjust the infusion rate by a human operation, it is possible to prevent an error in the infusion rate adjustment due to the human operation, and it is possible to prevent an illicit operation of the infusion set 2 by a third party such as a patient. The flow rate control chip 1 is prepared for each infusion rate, and one having an infusion rate according to a doctor's instruction is selected and used.

また、本実施例に係る流量制御チップ１は、第３輸注液溜まり２１にメッシュフィルタ２４を設置してあるため、患者に供給される輸注液中の気泡及び異物をメッシュフィルタ２４で除去することが可能である。 Further, since the flow rate control chip 1 according to the present embodiment has the mesh filter 24 installed in the third infusion solution pool 21, the mesh filter 24 can remove bubbles and foreign substances in the infusion solution supplied to the patient. Is possible.

［第２実施例］
図４は、本発明の第２実施例に係る流量制御チップ３１及びこの流量制御チップ３１を備えた輸液セット３２の使用状態を示す図である。この図４に示すように、輸液セット３２は、輸液スタンド（図示せず）に吊された輸液ボトル３に差し込まれるボトル針４と、ボトル針４が一端に取り付けられたチューブ５と、チューブ５の他端に取り付けられて患者の体に差し込まれる留置針６と、ボトル針４と留置針６とを接続するチューブ５の途中に配置された点滴筒３３と、点滴筒３３にチューブ５を介して接続された流量制御チップ３１と、流量制御チップ３１と留置針６との間のチューブ５に配置される開閉弁７と、を備えている。この図４に示す輸液セット３２は、図６に示した従来の輸液セット１００と比較して、従来の輸液セット１００のクレンメ１０６を流量制御チップ３１と開閉弁７に置き換えた構成になっている。 [Second Embodiment]
FIG. 4 is a diagram showing a usage state of the flow rate control chip 31 and the infusion set 32 including the flow rate control chip 31 according to the second embodiment of the present invention. As shown in FIG. 4, the infusion set 32 includes a bottle needle 4 inserted into an infusion bottle 3 hung on an infusion stand (not shown), a tube 5 having the bottle needle 4 attached to one end, and a tube 5. Of the indwelling needle 6 attached to the other end of the tube to be inserted into the body of the patient, the drip tube 33 arranged in the middle of the tube 5 connecting the bottle needle 4 and the indwelling needle 6, and the tube 5 to the drip tube 33. The flow control chip 31 is connected to the flow control chip 31, and the on-off valve 7 arranged in the tube 5 between the flow control chip 31 and the indwelling needle 6 is provided. As compared with the conventional infusion set 100 shown in FIG. 6, the infusion set 32 shown in FIG. 4 has a configuration in which the clamp 106 of the conventional infusion set 100 is replaced with a flow rate control chip 31 and an opening/closing valve 7. ..

図５は、流量制御チップ３１の詳細を示す図である。なお、図５（ａ）は流量制御チップ３１の正面図、図５（ｂ）は図５（ａ）のＡ２−Ａ２線に沿って切断して示す流量制御チップ３１の断面図、図５（ｃ）は図５（ａ）の矢印Ｂ２方向から見た流量制御チップ３１の平面図である。 FIG. 5 is a diagram showing details of the flow rate control chip 31. 5A is a front view of the flow rate control chip 31, and FIG. 5B is a cross-sectional view of the flow rate control chip 31 taken along the line A2-A2 of FIG. 5C is a plan view of the flow rate control chip 31 as seen from the direction of the arrow B2 in FIG.

図５に示す流量制御チップ３１は、合成樹脂材料（例えば、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、ポリアミド（ＰＡ））で形作られたチップ本体３４と、チップ本体３４の正面側を覆うように固定された弾性変形可能で且つ透明な合成樹脂材料（例えば、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、ポリアミド（ＰＡ））製のフィルム３５と、を備えている。 The flow rate control chip 31 shown in FIG. 5 covers the chip body 34 formed of a synthetic resin material (for example, polyethylene (PE), polypropylene (PP), polyamide (PA)) and the front side of the chip body 34. A fixed film 35 made of elastically deformable and transparent synthetic resin material (for example, polyethylene (PE), polypropylene (PP), polyamide (PA)) is provided.

チップ本体３４は、正面形状が略矩形形状の板状体である輸注液流路形成部３６と、輸注液流路形成部３６の長手方向（Ｙ軸方向）一端側に一体に形成されたパイプ状の輸注液導入路形成部３７と、輸注液流路形成部３６の長手方向（Ｙ軸方向）他端側に一体に形成されたパイプ状の輸注液供給路形成部３８と、を有している。 The chip body 34 is a plate integrally formed on one end side in the longitudinal direction (Y-axis direction) of the infusion solution flow passage forming portion 36, which is a plate-shaped body having a substantially rectangular front shape. And a pipe-shaped infusion solution supply path forming section 38 integrally formed on the other end side of the infusion solution flow path forming section 36 in the longitudinal direction (Y-axis direction). ing.

輸注液導入路形成部３７は、ボトル針４から延びるチューブ５の端部が嵌合され、輸液ボトル３内の輸注液をチューブ５を介して輸注液流路形成部３６の内部空間（第１輸注液溜まり４０）に導入する輸注液導入路４１が形成されている。また、輸注液導入路形成部３７は、嵌合されたチューブ５が抜けるのを防止するためのリング状の第１抜け止め突起４２が外周面に形成されている。この第１抜け止め突起４２は、外表面が円弧形状であり、チューブ５を弾性変形させた状態で円滑に嵌合できるようになっている。 The end portion of the tube 5 extending from the bottle needle 4 is fitted into the infusion solution introduction passage forming portion 37, and the infusion solution in the infusion bottle 3 is passed through the tube 5 to the inner space of the infusion solution passage forming portion 36 (first An infusion solution introduction path 41 is formed to be introduced into the infusion solution pool 40). In addition, the infusion solution introduction passage forming portion 37 is formed with a ring-shaped first retaining protrusion 42 on the outer peripheral surface for preventing the fitted tube 5 from coming off. The outer surface of the first retaining protrusion 42 has an arc shape, and the tube 5 can be smoothly fitted in the elastically deformed state.

輸注液流路形成部３６は、輸注液導入路４１に連通する第１輸注液溜まり４０が長手方向（Ｙ軸方向）の一端側に形成されている。この第１輸注液溜まり４０は、輸注液流路形成部３６の表面側に開口する有底の矩形形状の穴であり、輸注液流路形成部３６の表面側の開口部分がフィルム３５で塞がれている。また、輸注液流路形成部３６は、第１輸注液溜まり４０と第２輸注液溜まり４３とを接続するラビリンス状の減圧流路４４が形成されている。この減圧流路４４は、表面側にのみ形成され、第１輸注液溜まり４０から第１減圧流路部４４ａに流れ込んだ輸注液が第１接続路４４ｂを介して第２減圧流路部４４ｃに案内され、第２減圧流路部４４ｃを流れた輸注液が第２接続路４４ｄを介して第３減圧流路部４４ｅに案内され、第３減圧流路部４４ｅを流れた輸注液が第３接続路４４ｆを介して第２輸注液溜まり４３に滴下するようになっている。この減圧流路４４は、第１乃至第３減圧流路部４４ａ，４４ｃ，４４ｅが規則的に複数折れ曲がりながら延びる狭い流路になっている。そして、この減圧流路４４は、第１輸注液溜まり４０内の輸注液が所定の時間内に所定数（所定量）だけ第２輸注液溜まり４３に滴下するように（所定の輸液速度になるように）、流路幅、流路深さ、及び流路長さが設定されている。 In the infusion solution flow path forming portion 36, a first infusion solution reservoir 40 that communicates with the infusion solution introduction passage 41 is formed at one end side in the longitudinal direction (Y-axis direction). The first infusion solution reservoir 40 is a bottomed rectangular hole that opens on the surface side of the infusion solution flow path forming portion 36, and the opening portion on the surface side of the infusion solution flow path forming portion 36 is closed by the film 35. It is peeling. Further, the infusion solution flow path forming portion 36 is provided with a labyrinth-like decompression flow path 44 that connects the first infusion solution pool 40 and the second infusion solution pool 43. The decompression flow path 44 is formed only on the front surface side, and the infusion liquid that has flowed from the first infusion solution reservoir 40 into the first decompression flow path portion 44a is transferred to the second decompression flow path portion 44c via the first connection path 44b. The infusion liquid that has been guided and has flowed through the second decompression flow path portion 44c is guided to the third decompression flow path portion 44e via the second connection path 44d, and the infusion fluid that has flowed through the third decompression flow path portion 44e is the third. It is adapted to drip into the second infusion solution reservoir 43 via the connection path 44f. The decompression flow path 44 is a narrow flow path in which the first to third decompression flow path portions 44a, 44c and 44e extend while being regularly bent. Then, the decompression flow path 44 allows the infusion liquid in the first infusion liquid reservoir 40 to drop into the second infusion liquid reservoir 43 by a predetermined number (predetermined amount) within a predetermined time (at a predetermined infusion speed). As described above), the flow channel width, the flow channel depth, and the flow channel length are set.

また、輸注液流路形成部３６の第２輸注液溜まり４３は、輸注液流路形成部３６の表面側に開口する有底の丸穴であり、輸注液流路形成部３６の長手方向（Ｙ軸方向）の他端側に形成され、輸注液流路形成部３６の表面側の開口部分がフィルム３５によって塞がれている。また、第２輸注液溜まり４３は、内部がメッシュフィルタ４５によって２室に分けられている。メッシュフィルタ４５によって分けられた第２輸注液溜まり４３の第１室４６は、第３接続路４４ｆが開口するようになっている。また、メッシュフィルタ４５によって分けられた第２輸注液溜まり４３の第２室４７は、第３接続路４４ｆを介して第１室４６に流れ込んだ輸注液がメッシュフィルタ４５を通過した後に流れ込むようになっている。 In addition, the second infusion solution reservoir 43 of the infusion solution flow passage forming portion 36 is a bottomed round hole that opens on the front surface side of the infusion fluid flow passage forming portion 36, and the longitudinal direction of the infusion fluid flow passage forming portion 36 ( It is formed on the other end side in the Y-axis direction) and the opening portion on the front surface side of the infusion solution flow path forming portion 36 is closed by the film 35. Further, the inside of the second infusion solution reservoir 43 is divided into two chambers by a mesh filter 45. In the first chamber 46 of the second infusion solution reservoir 43 divided by the mesh filter 45, the third connection path 44f is opened. In addition, the second chamber 47 of the second infusion solution reservoir 43 divided by the mesh filter 45 is designed so that the infusion solution that has flowed into the first chamber 46 via the third connection path 44f will flow after passing through the mesh filter 45. Has become.

メッシュフィルタ４５は、第２輸注液溜まり４３に形成されたフィルタ設置段部４８に嵌合固定され、第１室４６内に流れ込んだ輸注液内の気泡及び異物を除去し、気泡及び異物が除去された輸注液を第２室４７内に流入させるようになっている。このメッシュフィルタ４５は、円筒状の外筒４５ａの内側にフィルタ部４５ｂが形成され、フィルタ部４５ｂに四角形状の開口部が多数形成されている。このような形状及び機能を有するメッシュフィルタ４５は、合成樹脂材料（例えば、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、ポリアミド（ＰＡ））で形作されており、射出成形によって高精度に形成されている。なお、メッシュフィルタ４５は、開口部の一辺の長さが、例えば、０．１〜１．０ｍｍに形成されている。 The mesh filter 45 is fitted and fixed to a filter installation step portion 48 formed in the second infusion solution reservoir 43, removes air bubbles and foreign matters in the infusion fluid that has flowed into the first chamber 46, and removes air bubbles and foreign matters. The infused liquid thus prepared is allowed to flow into the second chamber 47. In this mesh filter 45, a filter portion 45b is formed inside a cylindrical outer cylinder 45a, and a large number of square openings are formed in the filter portion 45b. The mesh filter 45 having such a shape and function is formed of a synthetic resin material (for example, polyethylene (PE), polypropylene (PP), polyamide (PA)), and is formed with high precision by injection molding. There is. The mesh filter 45 is formed such that the length of one side of the opening is, for example, 0.1 to 1.0 mm.

輸注液供給路形成部３８は、開閉弁７から延びるチューブ５の端部が嵌合され、第２輸注液溜まり４３の第２室４７とチューブ５とを接続する輸注液供給路５０が形成されている。また、輸注液供給路形成部３８は、嵌合されたチューブ５が抜けるのを防止するためのリング状の第２抜け止め突起５１が外周面に形成されている。この輸注液供給路形成部３８の第２抜け止め突起５１は、輸注液導入路形成部３７の第１抜け止め突起４２と同様に、外表面が円弧形状であり、チューブ５を弾性変形させた状態で円滑に嵌合できるようになっている。 An end portion of the tube 5 extending from the on-off valve 7 is fitted to the infusion solution supply passage forming portion 38, and an infusion solution supply passage 50 that connects the second chamber 47 of the second infusion solution reservoir 43 and the tube 5 is formed. ing. In addition, the infusion solution supply passage forming portion 38 is formed with a ring-shaped second retaining protrusion 51 on the outer peripheral surface for preventing the fitted tube 5 from coming off. Similar to the first retaining protrusion 42 of the infusion solution introducing passage forming part 37, the second retaining protrusion 51 of the infusion solution supplying passage forming part 38 has an arcuate outer surface and elastically deforms the tube 5. It can be fitted smoothly in this state.

このような構成の流量制御チップ３１を備えた輸液セット３２は、開閉弁７でチューブ５の流路を閉じた状態でボトル針４を輸液ボトル３に差し込み、点滴筒３３を複数回揉むことにより、輸注液が点滴筒３３内に滴下して溜まる。そして、この流量制御チップ３１を備えた輸液セット３２は、輸注液が点滴筒３３の空間に１／３〜１／２程度溜まると、開閉弁７でチューブ５の流路を開き、輸注液を流量制御チップ３１を介して留置針６の先端まで満たした後、留置針６を患者の体（腕等）に差し込むことにより、輸液が開始されるようになっている。輸液速度は、流量制御チップ３１によって一定速度に制御されるが、点滴筒３３への輸注液の滴下速度を観察することによって、看護師等が目視で確認することができる。 The infusion set 32 including the flow rate control chip 31 having such a configuration is obtained by inserting the bottle needle 4 into the infusion bottle 3 with the on-off valve 7 closing the flow path of the tube 5 and rubbing the drip tube 33 multiple times. The infusion solution drips and collects in the drip tube 33. The infusion set 32 including the flow rate control chip 31 opens the flow path of the tube 5 with the opening/closing valve 7 when the infusion solution accumulates in the space of the drip tube 33 for about 1/3 to 1/2, and injects the infusion solution. After filling the tip of the indwelling needle 6 via the flow rate control chip 31, the indwelling needle 6 is inserted into the patient's body (arm or the like) to start infusion. The infusion rate is controlled to a constant rate by the flow rate control chip 31, but it can be visually confirmed by a nurse or the like by observing the dropping rate of the infusion solution into the drip tube 33.

このような本実施例に係る流量制御チップ３１は、輸注液を減圧流路４４で減圧して第２輸注液溜まり４３内に所定の速度で滴下することが可能になり、輸液速度を一定速度に保持できるため、人為的操作による輸液速度調整が不要になり、人為的操作に起因する輸液速度の調整ミスを防止でき、患者等の第３者による輸液セット３２の不正操作を防止することができる。なお、流量制御チップ３１は、輸液速度毎に用意されており、医師の指示に従った輸液速度のものが選択されて使用される。 The flow rate control chip 31 according to the present embodiment as described above can reduce the pressure of the infusion liquid by the decompression flow path 44 and drip it into the second infusion liquid reservoir 43 at a predetermined speed, and the infusion speed can be kept constant. Since it is possible to maintain the infusion rate, it is not necessary to adjust the infusion rate by a manual operation, it is possible to prevent an infusion rate adjustment error due to an artificial operation, and it is possible to prevent an illicit operation of the infusion set 32 by a third party such as a patient. it can. The flow rate control chip 31 is prepared for each infusion rate, and the infusion rate according to the doctor's instruction is selected and used.

また、本実施例に係る流量制御チップ３１は、第２輸注液溜まり４３にメッシュフィルタ４５を設置してあるため、患者に供給される輸注液中の気泡及び異物をメッシュフィルタ４５で除去することが可能である。 Further, since the flow rate control chip 31 according to the present embodiment has the mesh filter 45 installed in the second infusion solution reservoir 43, the mesh filter 45 can remove bubbles and foreign substances in the infusion solution supplied to the patient. Is possible.

なお、本発明に係る流量制御チップ１，３１は、輸液の対象が人間である上記各実施例に限定されるものでなく、輸液の対象が動物である場合にも同様に適用できる。また、本発明に係る流量制御チップ１，３１は、肥料、水等を植物に供給する場合にも適用できる。 The flow rate control chips 1 and 31 according to the present invention are not limited to the above-described embodiments in which the infusion target is a human, and can be similarly applied when the infusion target is an animal. The flow rate control chips 1 and 31 according to the present invention can also be applied to the case of supplying fertilizer, water, etc. to plants.

また、本発明に係る流量制御チップ１，３１は、輸液速度毎に色を変えて着色及び／又は輸液速度毎に番号を付し、輸液速度毎に適切に選択できるようにすることが好ましい。 Further, it is preferable that the flow rate control chips 1 and 31 according to the present invention be colored differently for each infusion rate and/or numbered for each infusion rate so that they can be appropriately selected for each infusion rate.

１，３１……流量制御チップ、２，３２……輸液セット、３……輸液ボトル、５……チューブ、７……開閉弁、２０，４４……減圧流路 1, 31... Flow control chip, 2, 32... Infusion set, 3... Infusion bottle, 5... Tube, 7... Open/close valve, 20, 44... Decompression flow path

Claims (3)

輸注液が収容された輸液ボトルに接続されるチューブの途中に配置され、前記チューブを流動する前記輸注液の流動速度を一定に保持する減圧流路が内部に設けられると共に、前記輸注液を溜めることができる輸注液溜まりが内部に設けられた流量制御チップにおいて、
前記減圧流路は、前記輸注液の流動方向に沿った下流端が前記輸注液溜まりに接続され、
前記輸注液溜まりは、メッシュフィルタによって第１室と第２室とに分けられ、
前記第１室には、前記減圧流路の下流端が接続され、
前記第２室には、前記メッシュフィルタを通過した前記輸注液を前記輸注液の流動方向下流側へ供給する輸注液供給路が接続された、
ことを特徴とする流量制御チップ。 A decompression flow path, which is arranged in the middle of a tube connected to an infusion bottle containing an infusion solution and which maintains a constant flow rate of the infusion solution flowing through the tube, is provided inside the tube, and the infusion solution is stored. In the flow control chip with the infusion solution reservoir inside ,
The depressurized flow path, the downstream end along the flow direction of the infusion liquid is connected to the infusion liquid reservoir,
The infusion solution reservoir is divided into a first chamber and a second chamber by a mesh filter,
The first chamber is connected to the downstream end of the decompression flow path,
An infusion solution supply path for supplying the infusion solution that has passed through the mesh filter to a downstream side in a flow direction of the infusion solution is connected to the second chamber,
Flow amount control chip you wherein a. 輸注液が収容された輸液ボトルに接続されるチューブの途中に配置され、前記チューブを流動する前記輸注液の流動速度を一定に保持する減圧流路が内部に設けられると共に、前記輸注液を溜めることができる輸注液溜まりが内部に設けられた流量制御チップにおいて、
前記減圧流路は、前記輸注液の流動方向に沿った下流端が前記輸注液溜まりに接続され、
前記減圧流路と前記輸注液溜まりとの間に輸液速度監視用輸注液溜まりが設けられ、
前記輸液速度監視用輸注液溜まりは、前記減圧流路から滴下する輸注液を溜めることができるようになっており、前記減圧流路から滴下する前記輸注液を外部から視認できるように開口する観察窓を有し、前記観察窓が弾性変形可能で且つ透明な合成樹脂材料製フィルムで塞がれ、前記フィルムが揉むように複数回操作されることにより、輸液ボトル側の輸注液を導き入れることができるようになっている、
ことを特徴とする流量制御チップ。 A decompression flow path, which is arranged in the middle of a tube connected to an infusion bottle containing an infusion solution and which maintains a constant flow rate of the infusion solution flowing through the tube, is provided inside the tube, and the infusion solution is stored. In the flow control chip with the infusion solution reservoir inside,
The depressurized flow path, the downstream end along the flow direction of the infusion liquid is connected to the infusion liquid reservoir,
An infusion pool for infusion rate monitoring is provided between the reduced pressure flow path and the infusion pool.
The infusion pool for monitoring the infusion rate is adapted to store the infusion solution dripping from the decompression channel, and the infusion solution dripping from the decompression channel is opened to be visible from the outside. It has a window, and the observation window is closed by an elastically deformable and transparent film made of a synthetic resin material, and the infusion liquid on the infusion bottle side can be introduced by operating the film a plurality of times so as to rub the film. Is ready,
Flow amount control chip you wherein a. 前記請求項１又は２に記載の流量制御チップと、
前記流量制御チップよりも前記輸注液の流動方向下流側の前記チューブに配置され、前記チューブの流路を開閉する開閉弁と、
を有することを特徴とする輸液セット。 The flow rate control chip according to claim 1 or 2 ,
An on-off valve that is arranged in the tube on the downstream side in the flow direction of the infusion solution with respect to the flow rate control chip and that opens and closes the flow path of the tube
An infusion set comprising:
JP2016079296A 2016-04-12 2016-04-12 Flow control chip and infusion set Expired - Fee Related JP6714419B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016079296A JP6714419B2 (en) 2016-04-12 2016-04-12 Flow control chip and infusion set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2016079296A JP6714419B2 (en) 2016-04-12 2016-04-12 Flow control chip and infusion set

Publications (2)

Publication Number Publication Date
JP2017189277A JP2017189277A (en) 2017-10-19
JP6714419B2 true JP6714419B2 (en) 2020-06-24

Family

ID=60084290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016079296A Expired - Fee Related JP6714419B2 (en) 2016-04-12 2016-04-12 Flow control chip and infusion set

Country Status (1)

Country Link
JP (1) JP6714419B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107823762A (en) * 2017-12-22 2018-03-23 天津哈娜好医材有限公司 Push type extrusion infusing pipeline self-desttruction equipment and its application method
US11590280B2 (en) * 2020-05-28 2023-02-28 Carefusion 303, Inc. Modular intravenous assembly

Also Published As

Publication number Publication date
JP2017189277A (en) 2017-10-19

Similar Documents

Publication Publication Date Title
US8523829B2 (en) Intravenous delivery system
CN106061539B (en) The catheter adapter of port with integrated form diaphragm actuators holder
EP1986730B1 (en) Template system for multi-reservoir implantable pump
CA1306916C (en) Dual access infusion and monitoring system
US5593385A (en) Contrast media dispensing apparatus
CN101282757B (en) A controlled flow administration set
EP2229970B1 (en) Bubble trap system for an infusion pump device
US10031348B2 (en) Contact lens with metered liquid system
JP7089302B2 (en) Chemical supply control device and injection solution injection device equipped with it
KR20110122053A (en) Bubble shaped membrane and use of such membrane in a device
US20050273062A1 (en) Infusion set
JP6714419B2 (en) Flow control chip and infusion set
US12004996B2 (en) Miniature fixed and adjustable flow restrictor for the body
KR20070101670A (en) Needle connecting device of a medicine injection apparatus
CN107921204A (en) Selector
KR100610461B1 (en) Fluid supplying apparatus
JP2008055168A (en) Dosing device for dosing fluid drug
CN114641326B (en) Liquid medicine flow regulator
US20180193617A1 (en) System and Method for Cleaning a Filter
JP3185453U (en) Chemical injection device
KR101419838B1 (en) Needle capping unit for syringe and syringe having the same
US20110112485A1 (en) Flushable injection port
KR101006871B1 (en) Connecting unit for exhausting liquid and injection set having the same
JP3185454U (en) Chemical injection device
JP4253538B2 (en) CHEMICAL LIQUID INTRODUCING DEVICE, CHEMICAL SOLUTION INJECTION DEVICE EQUIPPED WITH THE SAME, AND INTERMEDIATE ADMINISTRATION SYSTEM

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20190326

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20191225

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20191225

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200220

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20200508

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20200605

R150 Certificate of patent or registration of utility model

Ref document number: 6714419

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees