JP2007330800A - Infusion speed adjusting device of chemical syringe - Google Patents

Infusion speed adjusting device of chemical syringe Download PDF

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JP2007330800A
JP2007330800A JP2007189348A JP2007189348A JP2007330800A JP 2007330800 A JP2007330800 A JP 2007330800A JP 2007189348 A JP2007189348 A JP 2007189348A JP 2007189348 A JP2007189348 A JP 2007189348A JP 2007330800 A JP2007330800 A JP 2007330800A
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check valve
infusion rate
control unit
flow
adjusting device
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Norihiro Hiejima
徳寛 比恵島
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Nipro Corp
ニプロ株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a chemical syringe that facilitates setting operation of infusion speed and is largely improved in cost. <P>SOLUTION: This infusion speed adjusting device comprises a tubular flow rate control section 1 having a plurality of check valves 13, 14 and 15 of duckbill type arranged in series in descending order of opening pressure from the upstream side to the downstream side, and a check valve selecting means 2 inserted into lumens 121 and 111 of the flow rate control section 1 from the upstream side including a tubular rod 21 capable of penetrating the check valves 13, 14 and 15. The infusion speed is adjusted by the check valves 13, 14 or 15 of the most upstream side that is not penetrated by the rod 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、薬液リザーバー内に収容された例えば麻酔薬や鎮痛薬、抗癌剤、抗生物質等の薬液を、患者の体内に、ゴム弾性体の収縮力や、バネの伸張力、陰圧チャンバーによる押圧力等を利用して微量注入する、薬液注入器の注入速度調整装置に関する。 The present invention is stowed example anesthetics and analgesics in liquid chemical reservoir, anticancer, a chemical such as an antibiotic, into a patient's body, and contractile force of the rubber elastic body, stretching force of the spring, push by negative pressure chamber It microinjected utilizing pressure, etc., relating to infusion rate adjusting device for drug solution injectors.

ゴム弾性体の収縮力等を利用して薬液リザーバーを加圧し、薬液リザーバー内の薬液を患者の体内に微量注入する薬液注入器は、従来、注入速度を調整するために細管を利用しており、薬液の流量を細管の管路抵抗により減衰させていた。 Chemical injector microinjection the chemical reservoir is pressurized by utilizing the shrinking force or the like of the rubber elastic body, the chemical liquid in the chemical liquid reservoir in the body of the patient, conventionally utilizes a capillary in order to adjust the infusion rate , the flow rate of the chemical solution was attenuated by pipeline resistance of the tubule. 従って、注入速度は細管の内径や長さを調節することにより、任意の値に調節することができるので、通常、1つのリザーバーに細管1つを設けて注入速度を設定したものが販売されていた。 Therefore, the injection rate by adjusting the inner diameter and length of the capillary, it is possible to adjust to any value, usually those one capillary was set infusion rate is provided in a single reservoir are sold It was.
しかしながら、近年、患者の容態の変化に対応して、薬液注入の途中で注入速度を変更する必要が生ずることがあり、このような注入途中での速度変更のために、本願出願人は既に、制御速度の異なる複数の細管を夫々活栓に接続し、活栓を切り換えることで速度を可変にしたもの(特開平9−280394号公報、特開平10−28741号公報)や、複数の細管を並列に配列し、夫々の細管をクランプで開閉することにより速度を可変にしたもの(特開平10−113386号公報など)等を提案している。 However, in recent years, in response to changes in the patient's condition, it may need to change the middle injection rate of liquid injection occurs, for such injecting middle speed changes, the present applicant has already the control rate of different capillaries connected to each stopcock, the speed by switching the stopcock those variable (JP-9-280394, JP-a No. 10-28741 discloses) and a plurality of capillaries in parallel arranged proposes that the speed variable by opening and closing the respective tubular clamp (such as JP-a 10-113386 JP) or the like.

しかしながら、上記のような方法は、薬液の流路が非常に複雑であり、細管の流入速度を設定する操作も比較的難しいものであった。 However, the method as described above, the flow path of the liquid medicine is very complex, the operation of setting the flow rate of the capillary was also relatively difficult. また、リザーバーの加圧力を細管の管路抵抗により減衰させる方式の薬液注入器は、±10%以内と比較的正確に流量の微調整が可能なものではあるが、細管自身は、注入速度の精度が管の内径の公差に影響されるため、非常に精密なものであり、従って、これを複数本使用することは、コスト的にも非常に高くつくものであった。 Also, the chemical liquid injector system in which the pressure of the reservoir is attenuated by pipeline resistance of capillaries will, of those capable of relatively precise fine adjustment of the flow rate within 10% ±, tubules itself, the infusion rate since accuracy is affected by the tolerance of the inner diameter of the tube, are those very precise, therefore, it is also cost was achieved very expensive for this plurality of use.

特開平9−280394号公報 JP-9-280394 discloses 特開平10−28741号公報 JP-10-28741 discloses 特開平10−113386号公報 JP 10-113386 discloses

本発明は如上の事情に鑑みてなされたもので、注入速度の設定操作が容易であり、コスト的に大幅に改良された薬液注入器の注入速度調整装置を提供することを目的とする。 The present invention has been made in view of the circumstances According to the process 30, the setting operation of the infusion rate is easy, and an object thereof is to provide an infusion rate adjusting device which is inexpensive to greatly improved chemical injector.

本発明者は、上記の課題を解決するために鋭意検討の結果、流路に開放圧の異なる複数の逆止弁を直列または並列に配置し、これらの逆止弁の中から、調整しようとする流量に合わせて逆止弁を選択すれば良いことに想到し、本発明を完成した。 The present inventors, as a result of intensive studies to solve the above problems, placing a plurality of different check valve of opening pressure in the flow channel in series or in parallel, from these check valves, attempts to reconcile conceive that may be selected the check valve in accordance with the flow rate, thereby completing the present invention. すなわち、本発明は、直状の薬液流路に、所望の流量を得る注入速度に調整する開放圧の異なる複数の逆止弁を直列に配置した管状の流量制御部と、該流量制御部の逆止弁の中から所望の流量を得る注入速度に調整する逆止弁を選択する逆止弁選択手段、とを含んでなる薬液注入器の注入速度調整装置である。 That is, the present invention is a straight-shaped in chemical liquid flow path, a flow control unit of the tubular disposed a plurality of different check valve of opening pressure is adjusted to infusion rate to obtain the desired flow in series, the flow amount control unit check valve selecting means for selecting a check valve to adjust the infusion rate to achieve the desired flow rate out of the check valve, which is infusion rate adjusting device for drug solution injector comprising a city. ここで、流量制御部は、上流側から下流側に開放圧が高い順に直列に配置されたダックビルタイプの複数の逆止弁を備えてなるものが好ましい。 Here, the flow control unit, which from the upstream side becomes a plurality of check valves of the duckbill type, which are arranged in series in the order opening pressure is higher on the downstream side is preferable. この場合、逆止弁選択手段としては、流量制御部の管腔にその上流側から挿着されて逆止弁を貫通可能な管状のロッドを含んでなるものが採用され、このロッドにより貫通されない最も上流側の逆止弁により注入速度が調整される。 In this case, the check valve selecting means, those comprising the upstream from the pierceable tubular check valve is inserted side rod into the lumen of the flow control portion is employed, it is not penetrated by the rod infusion rate is adjusted by the most upstream side of the check valve. ロッドを含む逆止弁選択手段は、ロッドの外周に回動自在に設けられた雌型螺合手段を備えており、この雌型螺合手段が、流量制御部の基端に設けられた雄型螺合手段と係合し、これを回動させることによりロッドを流量制御部の管腔内で移動させるようにしたものが好ましい。 Check valve selecting means includes a rod is provided with a female threaded means provided rotatably on the outer periphery of the rod, this female threaded means, provided at the proximal end of the flow control unit male Katanishigo means engages, is preferred which is adapted to move the rod in the lumen of the flow control unit by rotating them. 流量制御部は、直列に配置されたアンブレラタイプの開放圧の異なる複数の逆止弁を備え、かつこの逆止弁が、軸上に薬液流路を有してなるものであってもよい。 Flow control unit is provided with a check valve of a plurality of different opening pressure of the umbrella type arranged in series, and the check valve may be made of a chemical liquid flow path on the shaft. この場合、逆止弁選択手段としては逆止弁の薬液流路を閉塞するする手段が採用され、逆止弁の薬液流路の1つが逆止弁選択手段により閉塞されたときに、その薬液流路の閉塞された逆止弁が逆止弁として機能するようになっている。 In this case, the check valve selecting means is adopted means for closing the liquid medicine flow passage of the check valve, when one of the chemical liquid flow path of the check valve which is closed by the check valve selecting means, the chemical occluded check valve of the flow path is adapted to function as a check valve. このような薬液流路閉塞手段として機能する逆止弁選択手段は、流量選択部の側壁に設けられるのが好ましい。 Such a check valve selecting means for functioning as a chemical liquid flow path blocking means is preferably provided on the side wall of the flow selection part.

本発明の注入速度調整装置を採用することにより、薬液注入器の注入速度の設定操作が容易になる。 By employing the infusion rate adjusting device of the present invention, the setting operation of the injection rate of liquid medicine injector is facilitated. また、薬液注入器の注入速度調整装置を安価に提供することができる。 Further, it is possible to provide an inexpensive infusion rate adjusting device of the chemical injector.

次に本発明の実施例について図面に基づいて説明する。 Following examples of the present invention will be described with reference to the drawings.
図1は本発明の一実施例を示す縦断面図であり、図2は図1に示す注入速度調整装置の作用を説明するための図である。 Figure 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG 2 is a diagram for explaining the operation of the infusion rate adjusting device shown in FIG. また、図3は本発明の他の実施例を示す図であり、図4は図3に示す注入速度調整装置の作用を説明するための図である。 Further, FIG. 3 is a diagram showing another embodiment of the present invention, FIG. 4 is a diagram for explaining the operation of the infusion rate adjusting device shown in FIG. また、図5は図1に示す注入速度注入装置を用いた薬液注入器の一例を示す図である。 Further, FIG. 5 is a diagram showing an example of a drug solution injector with infusion rate infusion apparatus shown in FIG.
図1および図3に示すように、本発明の注入速度調整装置は、開放圧の異なる複数の逆止弁を備えた管状の流量制御部1、10と、この流量制御部1、10の逆止弁の中から注入速度を調整する逆止弁を選択する逆止弁選択手段2、20、とを含んでなる。 As shown in FIGS. 1 and 3, the infusion rate adjusting device of the present invention, a tubular flow control unit 1, 10 having a plurality of different check valves of the opening pressure, the reverse of the flow rate control unit 1, 10 check valve selecting means 2, 20 for selecting a check valve for adjusting the infusion rate from the check valve comprises a city.

図1に示す注入速度調整装置は、上流側から下流側に開放圧が高い順に直列に配置されたダックビルタイプの複数の逆止弁13、14、15を備えた管状の流量制御部1と、この流量制御部1の管腔121、111にその上流側から挿着されて、逆止弁13、14、15を貫通可能な管状のロッド21を含んでなる逆止弁選択手段2からなり、ロッド21により貫通されない最も上流側の逆止弁13、14または15により注入速度が調整される。 Infusion rate adjusting device shown in Figure 1, a flow control unit 1 of the tubular having a duckbill type plurality of check valves 13, 14, 15 arranged in series in the order opening pressure is higher on the downstream side from the upstream side, the flow control unit is inserted from the upstream side to the first lumen 121, 111, makes a check valve 13, 14 and 15 from the check valve selecting means 2 comprising a tubular rod 21 pierceable, infusion rate is adjusted by the check valve 13, 14 or 15 on the most upstream side is not penetrated by the rod 21.
流量制御部1は、先端部11と基端部12からなる管状体であって、先端部11の管腔111に上流側(基端側)から下流側(先端側)に開放圧が高い順に直列に配置された、ダックビルタイプの複数の逆止弁13、14、15を備えてなるもので、先端部11にはコネクター3に接続される接続チューブ31が取り付けられ、基端部12の管腔121は逆止弁選択手段2のロッド21の嵌合部分と相補的な形状に形成されている。 Flow control unit 1 is a tubular body made of tip 11 and a proximal end 12, the upstream side downstream from the end (base end side) in order opening pressure is high (tip side) into the lumen 111 of the distal end portion 11 arranged in series, made of a plurality of check valves 13, 14, 15 of the duckbill type, connection tube 31 connected to the connector 3 is attached to the distal end 11, the tube of the base end portion 12 lumen 121 is formed in a complementary shape to fit the portion of the rod 21 of the check valve selecting means 2. 基端部12には、その基端に、逆止弁選択手段2に設けられた後述の雌型螺合手段22と係合して、逆止弁選択手段2を流量制御部1に固定する雄型螺合手段122が設けられており、この雄型螺合手段122より先端側には、最も開放圧の高い逆止弁13に近接して、挿入されたロッド21と密接してロッド21の外壁と基端部12の管腔121の間を液密にシールするOリング16が設けられている。 The proximal end portion 12, at its proximal end engages the female threaded means 22 described later provided in the check valve selecting means 2, to fix the check valve selecting means 2 to the flow control unit 1 Yugatanishigo means 122 is provided to the distal side of the male threaded section 122, close to the most open high pressure check valve 13, close to the rod 21 which is inserted a rod 21 O-ring 16 is provided to seal fluid-tightly between the lumen 121 of the outer wall and the proximal portion 12.

逆止弁選択手段2は、先端と基端を有しており、流量制御部1の上流側から挿着されて逆止弁13、14、15を貫通可能な中空ロッド21と、このロッド21の基端部外周に回動自在に取り付けられた雌型螺合手段22を備えている。 Check valve selecting means 2 has a leading end and a proximal end, a hollow rod 21 which can pass through the check valve 13, 14, 15 are inserted from the upstream side of the flow control unit 1, the rod 21 and a is attached to the proximal end outer peripheral rotatably female threaded means 22. 逆止弁選択手段2の基端には、図5に示す流量制御装置4に接続される接続チューブ41が接続されており、流量制御装置4から流出した薬液は、接続チューブ41を通ってロッド21の内腔215に流入する。 The proximal end of the check valve selecting means 2, is connected to the connection tube 41 connected to the flow control device 4 shown in FIG. 5, the drug solution flowing out from the flow control unit 4 through the connection tube 41 rod It flows into the lumen 215 of 21. ロッド21は流量制御部1に挿着される先端側の相対的に径の小さい部分211と、雌型螺合手段22が取り付けられる基端側の相対的に径の大きい部分212からなる中空部材である。 Hollow member and the rod 21 is a small portion 211 having a relatively diameter of the distal end side to be inserted into the flow control unit 1 consists of a large portion 212 of the relatively diameter of the proximal end side female threaded means 22 is attached it is. 雌型螺合手段22はこのロッド21の周りを回動自在であり、ロッド21の基端に設けられた環状突起213と、この突起213から先端側に所定距離隔てて設けられた環状リブ214の間で移動可能になっている。 Female threaded means 22 is rotatable around the rod 21, an annular projection 213 provided at the proximal end of the rod 21, an annular rib 214 provided with a predetermined distance distally from the protrusion 213 and it is movable between.
注入速度調整装置Cは、図5に示すような薬液注入器において流量制御装置4の下流に配置され、リザーバー7から吐出され流量制御装置4で所望の流量に制御された薬液の流量を調整する。 Infusion rate adjusting device C is located downstream of the flow control device 4 in chemical injector such as shown in FIG. 5, to adjust the flow rate of the chemical liquid is controlled to a desired flow rate in the flow rate control device 4 is discharged from the reservoir 7 . 図中、3はコネクター、31、41、51、71は接続チューブ、5はフィルター、6はクランプである。 In the figure, 3 is a connector, 31,41,51,71 connection tube, 5 filter, 6 is clamped.

次に、図1に示す注入速度調整装置による注入速度の調整について、図2を用いて説明する。 Next, the adjustment of the infusion rate by infusion rate adjusting device shown in FIG. 1 will be described with reference to FIG.
(A)は逆止弁選択手段2のロッド21により逆止弁13、14、15のどれも貫通されていない場合であり、注入速度は最も開放圧の高い、最も上流に位置する逆止弁13によって調整される。 (A) shows a case where the rod 21 of the check valve selecting means 2 is not none through the check valve 13, 14 and 15, the rate of infusion of the highest opening pressure, the check valve located at the most upstream It is adjusted by 13.
(B)は逆止弁選択手段2のロッド21により逆止弁13のみが貫通された場合であり、注入速度はより開放圧の高い逆止弁14によって調整される。 (B) shows a case where only the check valve 13 is penetrated by the rod 21 of the check valve selecting means 2, the infusion rate is adjusted by the high check valve 14 of more open pressure.
(C)は逆止弁選択手段2のロッド21により逆止弁13と14が貫通された場合であり、注入速度は最も下流の逆止弁15によって調整される。 (C) shows a case where the check valve 13 and 14 by the rod 21 of the check valve selecting means 2 is penetrated, the infusion rate is adjusted by the most downstream of the check valve 15.
(D)は逆止弁選択手段2のロッド21により逆止弁13、14、15がすべて貫通された場合であり、注入速度は調整されない。 (D) shows a case where the check valve 13, 14, 15 are all penetrated by the rod 21 of the check valve selecting means 2, the injection rate is not adjusted.

次に、本発明の他の実施例について説明する。 Next, another embodiment of the present invention.
流量制御部10は、図3に示すように、直列に配置されたアンブレラタイプの開放圧の異なる複数の逆止弁102、103、104を備え、かつこの逆止弁102、103、104が、軸上に薬液流路104、105、106を有してなるものであってもよい。 Flow control unit 10, as shown in FIG. 3, comprises a plurality of check valves 102, 103, 104 having different opening pressure of the umbrella type arranged in series, and this check valve 102, 103, 104, on the axis may be formed of a liquid medicine flow channel 104, 105, 106. この場合、逆止弁選択手段20としては逆止弁102、103、104の薬液流路104、105、106を閉塞する手段201、202、203が採用され、逆止弁102、103、104の薬液流路104、105、106の1つが逆止弁選択手段20により閉塞されたときに、その薬液流路104または105、106の閉塞された逆止弁102または103、104が逆止弁として機能するようになっている。 In this case, means 201, 202, 203 for closing the liquid medicine flow channel 104, 105, 106 of the check valve 102, 103 and 104 is adopted as a check valve selecting means 20, the check valve 102, 103, 104 when one of the liquid medicine flow channel 104, 105, 106 which is closed by the check valve selecting means 20, the check valve 102 or 103, 104 occluded the liquid medicine flow channel 104 or 105 and 106 as a check valve It is adapted to function. このような薬液流路閉塞手段201、202、203として機能する逆止弁選択手段20は、流量選択部10の側壁に設けられるのが好ましい。 Such check valve selecting means 20 which functions as a chemical liquid flow path blocking means 201, 202 is preferably provided on the side wall of the flow selection part 10.

次に、図3に示す注入速度調整装置による注入速度の調整について、図4を用いて説明する。 Next, the adjustment of the infusion rate by infusion rate adjusting device shown in FIG. 3 will be described with reference to FIG.
(A)は薬液流路閉塞手段201により逆止弁101の薬液流路104が閉塞された場合であり、注入速度は逆止弁101の開放圧によって調整される。 (A) shows a case where the chemical liquid flow path 104 of the check valve 101 by a chemical solution flow path blocking means 201 is closed, the infusion rate is adjusted by the opening pressure of the check valve 101.
(B)は薬液流路閉塞手段202により逆止弁102の薬液流路105が閉塞された場合であり、注入速度は逆止弁102の開放圧によって調整される。 (B) shows a case where the chemical liquid flow path 105 of the check valve 102 is closed by chemical liquid flow path blocking means 202, infusion rate is adjusted by the opening pressure of the check valve 102.
(C)は薬液流路閉塞手段203により逆止弁103の薬液流路106が閉塞された場合であり、注入速度は逆止弁103の開放圧によって調整される。 (C) shows a case where the chemical liquid flow path 106 of the check valve 103 is closed by chemical liquid flow path blocking means 203, infusion rate is adjusted by the opening pressure of the check valve 103.

〔実施例1〜2〕 [Examples 1-2]
図1に示すタイプの注入速度調整装置において、逆止弁13、14、15の開放圧の組み合わせを、夫々、2.5kPa、5kPa、10kPaにした場合(実施例1)と、12.5kPa、25kPa、30kPaにした場合(実施例2)で、リザーバーの加圧力を60kPaに設定して流量の減少率を測定したところ、表1に示すような結果が得られた。 In the type of infusion rate adjusting device shown in FIG. 1, a combination of opening pressure of the check valve 13, 14, 15, respectively, 2.5 kPa, 5 kPa, if you 10kPa (Example 1), 12.5 kPa, 25 kPa, in case of the 30 kPa (example 2), was measured rate of decrease in the flow rate by setting the pressure of the reservoir to 60 kPa, the results shown in Table 1 were obtained. 弁の開放圧2.5kPaにつき約4.2%の流量の減少が認められる。 Reduction of the opening pressure 2.5kPa per about 4.2% of the flow rate of the valve is observed.

本発明の一実施例を示す縦断面図である。 It is a longitudinal sectional view showing an embodiment of the present invention. 図1に示す注入速度調整装置の作用を説明するための図である。 It is a diagram for explaining the operation of the infusion rate adjusting device shown in FIG. 本発明の他の実施例を示す図である。 It is a diagram showing another embodiment of the present invention. 図3に示す注入速度調整装置の作用を説明するための図である。 It is a diagram for explaining the operation of the infusion rate adjusting device shown in FIG. 図1に示す注入速度注入装置を用いた薬液注入器の一例を示す図である。 Is a diagram illustrating an example of a drug solution injector with infusion rate infusion apparatus shown in FIG.

符号の説明 DESCRIPTION OF SYMBOLS

1 流量制御部 11 管状体 11 先端部 111 先端部の管腔 12 基端部 121 基端部の管腔 122 雄型螺合手段 13、14、15 逆止弁 16 Oリング 2 逆止弁選択手段 21 管状体 211 相対的に径の小さい部分 212 相対的に径の大きい部分 213 環状突起 214 環状リブ 215 内腔 10 流量制御部 101、102、103 逆止弁 104、105、106 薬液流路 20 逆止弁選択手段 201、202、203 薬液流路閉塞手段 3 コネクター 4 流量制御装置 5 フィルター 6 クランプ 7 リザーバー 31、41、51、71 接続チューブ C 注入速度調整装置 1 flow control unit 11 the tubular body 11 distal end 111 distal end lumen 122 lumen 12 proximal end 121 proximal end portion of Yugatanishigo means 13, 14, 15 check valve 16 O-ring 2 check valve selecting means 21 the tubular body 211 relatively small diameter portion 212 relatively diameter larger portion 213 annular projection 214 annular rib 215 lumen 10 flow control unit 101, 102, 103 check valve 104, 105, chemical liquid flow path 20 opposite check valve selecting means 201, 202, 203 chemical liquid flow path blocking means 3 connector 4 flow controller 5 filter 6 clamp 7 reservoir 31,41,51,71 connecting tube C infusion rate adjusting device

Claims (5)

  1. 直状の薬液流路に、所望の流量を得る注入速度に調整する開放圧の異なる複数の逆止弁を直列に配置した管状の流量制御部と、該流量制御部の逆止弁の中から所望の流量を得る注入速度に調整する逆止弁を選択する逆止弁選択手段、とを含んでなる薬液注入器の注入速度調整装置。 The straight chemical liquid flow path, from the desired tubular flow control unit arranged in series a plurality of check valves having different opening pressure is adjusted to infusion rate to obtain a flow check valve of the flow amount control unit desired check valve selecting means for selecting a check valve to adjust the infusion rate to obtain the flow rate, liquid medicine injector infusion rate adjusting device comprising and.
  2. 流量制御部が、上流側から下流側に開放圧が高い順に直列に配置されたダックビルタイプの複数の逆止弁を備えてなり、かつ逆止弁選択手段が、流量制御部の管腔にその上流側から挿着されて前記逆止弁を貫通可能な管状のロッドを含んでなり、該ロッドにより貫通されない最も上流側の逆止弁により注入速度が調整される請求項1に記載の注入速度調整装置。 Flow control unit is comprised provided with a check valve of the plurality of arranged duckbill type in series in the order opening pressure is higher on the downstream side from the upstream side, and the check valve selecting means, the lumen of the flow control unit infusion rate of claim 1 which is inserted from the upstream side comprises a rod of pierceable tubular said check valve, injection rate by the most upstream side of the check valve is not penetrated by the rod is adjusted adjusting device.
  3. 逆止弁選択手段が、ロッドの外周に回動自在に設けられた雌型螺合手段を備えており、該雌型螺合手段は、流量制御部の基端に設けられた雄型螺合手段と係合し、これを回動させることによりロッドを流量制御部の管腔内で移動させる請求項2に記載の注入速度調整装置。 Check valve selecting means includes a female threaded means provided rotatably on the outer periphery of the rod, the female threaded means, male screwed provided at the proximal end of the flow control unit engage means, infusion rate adjusting device according to claim 2 which move the rods in the lumen of the flow control unit by rotating.
  4. 流量制御部が、直列に配置されたアンブレラタイプの開放圧の異なる複数の逆止弁を備えてなり、該逆止弁は、軸上に薬液流路を有しており、該薬液流路の1つが逆止弁選択手段により遮断されたときに、該薬液流路の遮断された逆止弁が逆止弁として機能するようにされた請求項1に記載の注入速度調整装置。 Flow control unit is comprised provided with a plurality of different check valves of the opening pressure of the umbrella type arranged in series, check valve has a chemical liquid flow path on the axis, of the liquid chemical flow path when one of which is blocked by the check valve selecting means, infusion rate adjusting device according to claim 1, check valve blocked the drug liquid flow path is to function as a check valve.
  5. 逆止弁選択手段が、流量選択部の側壁に設けられた薬液流路閉塞手段である請求項4に記載の注入速度調整装置。 Check valve selecting means, infusion rate adjusting device according to claim 4, wherein the liquid medicine flow path blocking means provided in the side wall of the flow selection part.
JP2007189348A 2007-07-20 2007-07-20 Infusion speed adjusting device of chemical syringe Pending JP2007330800A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756982A (en) * 1987-11-09 1988-07-12 General Motors Corporation Dual seal battery vent valve
US5269771A (en) * 1993-02-24 1993-12-14 Thomas Medical Products, Inc. Needleless introducer with hemostatic valve
JPH06197960A (en) * 1992-12-28 1994-07-19 Nissho Corp Medical fluid injector
JPH08510395A (en) * 1993-03-30 1996-11-05 ジェイエスピィ パートナーズ,エル.ピィ. System for dispensing sterile fluids containing no preservative
US5578059A (en) * 1993-11-30 1996-11-26 Medex, Inc. Anti-reflux valve with environmental barrier
US5697904A (en) * 1995-06-06 1997-12-16 B. Braun Medical Inc. Medical infusion devices and medicine delivery systems employing the same
JPH1028741A (en) * 1996-07-17 1998-02-03 Nissho Corp Multi-stage type flow rate switching device
EP0947752A1 (en) * 1998-03-30 1999-10-06 Medex (société anonyme) Threshold valve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756982A (en) * 1987-11-09 1988-07-12 General Motors Corporation Dual seal battery vent valve
JPH06197960A (en) * 1992-12-28 1994-07-19 Nissho Corp Medical fluid injector
US5269771A (en) * 1993-02-24 1993-12-14 Thomas Medical Products, Inc. Needleless introducer with hemostatic valve
JPH08510395A (en) * 1993-03-30 1996-11-05 ジェイエスピィ パートナーズ,エル.ピィ. System for dispensing sterile fluids containing no preservative
US5578059A (en) * 1993-11-30 1996-11-26 Medex, Inc. Anti-reflux valve with environmental barrier
US5697904A (en) * 1995-06-06 1997-12-16 B. Braun Medical Inc. Medical infusion devices and medicine delivery systems employing the same
JPH1028741A (en) * 1996-07-17 1998-02-03 Nissho Corp Multi-stage type flow rate switching device
EP0947752A1 (en) * 1998-03-30 1999-10-06 Medex (société anonyme) Threshold valve

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