JPH0116185B2 - - Google Patents
Info
- Publication number
- JPH0116185B2 JPH0116185B2 JP56181399A JP18139981A JPH0116185B2 JP H0116185 B2 JPH0116185 B2 JP H0116185B2 JP 56181399 A JP56181399 A JP 56181399A JP 18139981 A JP18139981 A JP 18139981A JP H0116185 B2 JPH0116185 B2 JP H0116185B2
- Authority
- JP
- Japan
- Prior art keywords
- spring
- screw shaft
- gear
- manual
- way clutch
- 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
Links
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 4
- 229940079593 drug Drugs 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 4
- 230000009471 action Effects 0.000 description 6
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 6
- 102000004877 Insulin Human genes 0.000 description 3
- 108090001061 Insulin Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229940125396 insulin Drugs 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 235000021152 breakfast Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000520 microinjection Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Description
【発明の詳細な説明】
本発明は安全で取扱いの便利な薬液の微量注入
器に関するものである。医療分野、殊に糖尿病患
者のインスリン皮下注入療法等において、通常患
者は血糖コントロールのために、本発明に係るが
ごとき微量注入器を携帯し、薬液（インスリン）
を長時間にわたつて一定量持続して体内に微量注
入を行う（通常ベーサル注入という）。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microsyringe for medical fluids that is safe and convenient to handle. In the medical field, particularly in subcutaneous insulin injection therapy for diabetic patients, patients usually carry a microsyringe such as the one according to the present invention to control their blood sugar and administer a drug solution (insulin).
A micro-injection of a constant amount of the substance into the body over a long period of time (usually called basal injection).
本療法においては、朝食、昼食および夕食の食
前に食事による血糖値の上昇をきたすためこれを
抑制しなければならない。そのためには、食前に
定常の約10〜20倍量のインスリンを一時に注入す
ることが必要となる。この注入は患者各人の食事
時間にあわせて行う必要があるため、手動操作に
てワンシヨツト注入（通常ボーラル注入という）
を行うことが不可欠である。一方、従来より患者
が携帯し、モータ駆動によりシリンジから注入液
を長時間にわたつて一定量持続して体内に注入す
るようにした微量注入器においては、注入を手動
操作にて行う場合、機器のカバー等を開き装置内
部でネジ軸をモータと切りはなして手動で回転せ
しめこれを数回繰返してシリンジ内筒の送りを操
作していた。そのため手動送液を希望する場合非
常に手間がかかると同時に携帯時の操作性が悪
く、また送液量の規制が非常に困難である。本発
明はかかる従来の各欠点を解消するためになされ
たもので、その目的とするところは簡便な機構に
よつて手動注入を正確、安全かつ容易に装置外部
より操作できるようにした薬液の微量注入器を提
供することにある。 In this therapy, food-induced increases in blood sugar levels must be suppressed before breakfast, lunch, and dinner. To do this, it is necessary to inject about 10 to 20 times the normal amount of insulin at once before meals. This injection must be performed in accordance with each patient's meal time, so it is a one-shot injection (usually called a boular injection) that must be performed manually.
It is essential to do so. On the other hand, with conventional microinjectors that are carried by patients and driven by a motor to continuously inject a fixed amount of injected liquid into the body from a syringe over a long period of time, when the injection is performed manually, the device The operator opened the cover of the syringe, disconnected the screw shaft from the motor inside the device, and manually rotated the shaft.This process was repeated several times to control the feed of the syringe inner cylinder. Therefore, if manual liquid feeding is desired, it is very time consuming, the operability is poor when carried, and it is very difficult to regulate the amount of liquid fed. The present invention has been made in order to eliminate each of the drawbacks of the conventional devices, and its purpose is to enable manual injection of small amounts of chemical liquid by using a simple mechanism that can be performed accurately, safely, and easily from outside the device. Our goal is to provide syringes.
本発明は電池と直流モータを駆動源として減速
歯車機構とネジ軸によつてモータの回転を微速の
直線運動にかえ、シリンジ内筒を押し込んで薬液
の微量注入を行う注入装置において、注入の連続
操作中装置外からの操作レバーを介して自動注入
操作に干渉することなくワンシヨツト注入を可能
とする機構を付与している。尚ワンシヨツト注入
機構はネジ軸の両端の２箇所にワンウエイクラツ
チを使用することにより、２個のワンウエイクラ
ツチの間のネジ軸の自動注入操作による駆動に干
渉することなく、ネジ軸を外部より手動駆動する
ことを可能にした事を特徴とするものである。 The present invention is an injection device that uses a battery and a DC motor as a drive source, converts the rotation of the motor into slow linear motion using a reduction gear mechanism and a screw shaft, and injects a small amount of drug by pushing the inner cylinder of a syringe. A mechanism is provided that enables one-shot injection without interfering with automatic injection operation via a control lever from outside the device during operation. The one-shot injection mechanism uses one-way clutches at two locations on both ends of the screw shaft, allowing the screw shaft to be manually driven from the outside without interfering with the automatic injection operation of the screw shaft between the two one-way clutches. It is characterized by making it possible to
以下本発明を図面にもとずいて詳細に説明す
る。 The present invention will be explained in detail below based on the drawings.
第１図は本発明に係る微量注入器の一実施例の
全体構成図であり、第２図は手動操作レバー部の
側面図、第３図、第４図は２箇所のワンウエイク
ラツチの構造説明図で第３図は−断面図、第
４図は−断面図である。図において小形直流
モータ１は乾電池電源（図示せず）によつて回転
駆動され、その回転は減速歯車機構２を経て回転
制御部３により回転制御され差動歯車機構５を経
てネジ軸８と回転自在に軸支された歯車６に伝達
される。歯車６の回転はワンウエイクラツチとし
てのスプリング７を介して軸受４，１０ａに軸支
されたネジ軸８に伝達される。ネジ軸８の回転に
より駆動体９が矢印Ａ方向に移動する。この駆動
体９の移動により駆動体９に一体的に固定された
結合部９ａにはめこまれたシリンジ内筒１７が押
し動かされシリンジ外筒１８内の溶液が注入回路
継手１９を経て押し出される。 Fig. 1 is an overall configuration diagram of an embodiment of the microinjector according to the present invention, Fig. 2 is a side view of the manual operation lever section, and Figs. 3 and 4 are structural explanations of two one-way clutches. In the drawings, FIG. 3 is a cross-sectional view, and FIG. 4 is a cross-sectional view. In the figure, a small DC motor 1 is rotationally driven by a dry battery power source (not shown), and its rotation is controlled by a rotation control unit 3 via a reduction gear mechanism 2, and rotates with a screw shaft 8 via a differential gear mechanism 5. The signal is transmitted to a freely supported gear 6. The rotation of the gear 6 is transmitted via a spring 7 serving as a one-way clutch to a screw shaft 8 supported by bearings 4 and 10a. The rotation of the screw shaft 8 causes the drive body 9 to move in the direction of arrow A. This movement of the driver 9 pushes the syringe inner cylinder 17 fitted into the coupling part 9a integrally fixed to the driver 9, and the solution in the syringe outer cylinder 18 is forced out through the injection circuit joint 19.
第１図、第２図において、手動送液レバー１３
と一体的に結合された手動歯車１４はネジ軸８上
に回転自在に軸支された歯車１５と噛み合つてい
る。ストツパーピン１６は軸受ハウジング１０上
に打込まれている。もどしスプリング１２は手動
操作レバー１３の軸上に巻き付けられている。ス
プリング１１はワンウエイクラツチのためのスプ
リングでもある。手動レバー１３を矢印Ｂ方向に
操作するとストツパーピン１６によつて回転が規
制される範囲で手動歯車１４は矢印Ｃ方向に回転
する。この回転に比例して歯車１５がネジ軸８上
で矢印Ｄ方向に回る。この回転は第４図に示すよ
うにネジ軸８と歯車１５に一体をなすスリーブ１
５ａに接触して巻き付けられているスプリング１
１が歯車１５が矢印Ｄ方向に回る時のみスリーブ
１５ａ及びネジ軸８の外周との接触が強くなりネ
ジ軸８は歯車１５と一体的に回転する。この回転
によりネジ軸８は矢印Ａ方向に微量の移動をなし
手動送液が可能となる。また手動操作レバー１３
は手動操作の手を離すことによりもとの位置に自
動復帰する。自動復帰時歯車１５は矢印Ｄ方向と
逆方向に回るためスプリング１１によるワンウエ
イクラツチの働きによりスプリング１１とスリー
ブ１５ａとのしめつけがゆるみスリツプするので
ネジ軸を動かすことなくもどしスプリングの働き
により手動操作レバー１３は元の位置にもどる。
この操作の回数により必要な注入量が得られる。
第３図に示すようにスプリング７はネジ軸８と歯
車６に一体に形成されたスリーブ６ａの外周面上
に接触して巻き付られている。そして常時は歯車
６が回転するとこの回転によりスプリング７はス
リーブ６ａの側面及びネジ軸８の側面と強く接触
し、これによりネジ軸８は歯車６と一体として回
転する。しかし手動操作レバー１３の操作時はス
プリング７のワンウエイクラツチの働きによりス
リツプしネジ軸８の回転は歯車６に伝達されな
い。 In FIGS. 1 and 2, the manual liquid feeding lever 13
A manual gear 14 integrally connected with the gear 14 meshes with a gear 15 rotatably supported on the screw shaft 8. A stopper pin 16 is driven into the bearing housing 10. The return spring 12 is wound around the shaft of the manual operation lever 13. Spring 11 is also a spring for the one-way clutch. When the manual lever 13 is operated in the direction of arrow B, the manual gear 14 rotates in the direction of arrow C within the range where rotation is restricted by the stopper pin 16. The gear 15 rotates in the direction of arrow D on the screw shaft 8 in proportion to this rotation. This rotation is caused by the sleeve 1 integrated with the screw shaft 8 and the gear 15 as shown in FIG.
Spring 1 is wound in contact with 5a
Only when the gear 15 rotates in the direction of arrow D, the contact between the sleeve 15a and the outer periphery of the screw shaft 8 becomes strong, and the screw shaft 8 rotates integrally with the gear 15. This rotation causes the screw shaft 8 to move a small amount in the direction of arrow A, allowing manual liquid feeding. Also, the manual operation lever 13
automatically returns to its original position when the manual operation is released. During automatic return, the gear 15 rotates in the direction opposite to the direction of arrow D, so the one-way clutch by the spring 11 loosens the tightness between the spring 11 and the sleeve 15a, causing it to slip, allowing the manual operation lever to be returned without moving the screw shaft by the action of the spring. 13 returns to its original position.
The required injection volume can be obtained by the number of this operation.
As shown in FIG. 3, the spring 7 is wound around the outer peripheral surface of a sleeve 6a integrally formed with the screw shaft 8 and the gear 6. As shown in FIG. Normally, when the gear 6 rotates, the spring 7 comes into strong contact with the side surface of the sleeve 6a and the side surface of the screw shaft 8, so that the screw shaft 8 rotates together with the gear 6. However, when the manual operation lever 13 is operated, it slips due to the action of the one-way clutch of the spring 7, and the rotation of the screw shaft 8 is not transmitted to the gear 6.
即ち第３図において、定常運転時は、歯車６は
第１図の小型直流モータ１の回転駆動により、モ
ータ１側から見て時計方向に回転し、動力は歯車
６からネジ軸８へ伝達される。スプリング７は、
歯車６と一体のスリーブ６ａとネジ軸８の上に第
３図に図示のごとく組み込まれている。歯車６の
定常運転時の時計方向の回転に対して、スプリン
グ７のワンウエイクラツチの働き、即ちスプリン
グの巻き方向が左巻きであるため時計方向の回転
に対しては、スプリングの内径寸法が小さくなる
方向に力が働き、接触部、即ちスリーブ６ａの側
面とスプリング７及びネジ軸８の側面とスプリン
グ７とはそれぞれ強く接触し、動力の伝達を行う
働きにより、歯車６の回転はスプリング７を介し
てネジ軸８に伝達され第１図の駆動体９を矢印Ａ
方向に押し動かす。このときスプリング１１は第
３図のワンウエイクラツチの働きと逆の働きをす
る。即ち、定常運転時にスプリングの内径寸法が
大きくなる方向に力が働き、スプリングは、スリ
ツプする。 That is, in FIG. 3, during steady operation, the gear 6 rotates clockwise when viewed from the motor 1 side due to the rotational drive of the small DC motor 1 in FIG. 1, and power is transmitted from the gear 6 to the screw shaft 8. Ru. Spring 7 is
It is assembled onto the sleeve 6a integral with the gear 6 and the threaded shaft 8 as shown in FIG. When the gear 6 rotates clockwise during steady operation, the one-way clutch of the spring 7 works, that is, the winding direction of the spring is left-handed, so when the gear 6 rotates clockwise, the inner diameter of the spring decreases. The force acts on the contact parts, that is, the side surface of the sleeve 6a and the spring 7, and the side surface of the screw shaft 8 and the spring 7 are in strong contact with each other, and the rotation of the gear 6 is caused through the spring 7 due to the function of transmitting power. The drive body 9 in FIG. 1 is transmitted to the screw shaft 8 as shown by the arrow A.
push in the direction. At this time, the spring 11 has a function opposite to that of the one-way clutch shown in FIG. That is, during steady operation, a force acts in a direction that increases the inner diameter of the spring, causing the spring to slip.
上記定常運転に対してワンシヨツト注入時は、
第２図に図示の手動レバー１３を矢印Ｂ方向に操
作すると、ネジ軸８は矢印Ｄ方向の回転即ちスプ
リング７に対してモータ１側から見て時計方向
（定常運転時と同一方向）の回転が与えられると、
スプリングクラツチの働き、即ち定常運転の場合
と反対にスプリングの内径寸法が大きくなる方向
に力が働き、スリーブ６ａの側面とスプリング７
及びネジ軸８の側面とスプリング７とはそれぞれ
スリツプし、ワンシヨツト注入が働くことにな
る。 During one shot injection for the above steady operation,
When the manual lever 13 shown in FIG. 2 is operated in the direction of arrow B, the screw shaft 8 rotates in the direction of arrow D, that is, rotates clockwise relative to the spring 7 when viewed from the motor 1 side (the same direction as during steady operation). is given,
The action of the spring clutch, that is, the force acts in the direction in which the inner diameter of the spring increases, contrary to the case of steady operation, and the side surface of the sleeve 6a and the spring 7
The side surface of the screw shaft 8 and the spring 7 each slip, and one-shot injection is performed.
ただし、スプリング１１はワンシヨツト注入時
にスプリングの内径寸法が小さくなる方向に力が
働き、動力の伝達を行う。 However, when the spring 11 is injected in one shot, a force acts in a direction that reduces the inner diameter of the spring, thereby transmitting power.
言い替えると、ワンシヨツト注入時の回転は定
常運転に対してオーバーランする（定常運転と同
一方向でスリツプしながらモータ１より早い速度
で回転する）のである。 In other words, the rotation during one-shot injection overruns the steady operation (rotates at a faster speed than the motor 1 while slipping in the same direction as the steady operation).
以上から明らかなように、モータ１側から力を
働かせた場合と手動レバー１３側から力を働かせ
た場合とでは、スプリング７に働く戻りは逆にな
つている。 As is clear from the above, the return acting on the spring 7 is reversed when the force is applied from the motor 1 side and when the force is applied from the manual lever 13 side.
上記説明のように本発明に係る微量注入器は、
スプリング７及びスプリング１１の両者のワンウ
エイクラツチの働きにより手動操作が定常運転の
作用が互に干渉することなく両作用共に駆動体９
を矢印Ａ方向に押し動かすことができる。尚手動
操作レバー１３は装置外部に出ており手動操作の
み機器外部より容易に操作できることを特徴とす
るものである。 As explained above, the microinjector according to the present invention includes:
Due to the action of the one-way clutch of both the spring 7 and the spring 11, the manual operation and the steady operation action do not interfere with each other, and both actions are performed by the drive body 9.
can be pushed and moved in the direction of arrow A. Note that the manual operation lever 13 is featured on the outside of the device, so that only manual operation can be easily performed from outside the device.
第１図は本発明に係る薬液注入の手動操作の一
実施例を示す器機全体構造図、第２図は手動操作
レバー部の側面図、第３図、第４図は２箇所のワ
ンウエイクラツチの構造説明図で第３図は−
断面図、第４図は−断面図である。
１……小形直流モータ、２……減速歯車機構、
３……回転制御部、４……軸受、５……差動歯車
機構、６……歯車、６ａ……スリーブ、７……ス
プリング、８……ネジ軸、９……駆動体、１０…
…軸受ハウジング、１０ａ……軸受、１１……ス
プリング、１２……もどしスプリング、１３……
手動操作レバー、１４……手動歯車、１５……歯
車、１５ａ……スリーブ、１６……ストツパーピ
ン、１７……シリンジ内筒、１８……シリンジ外
筒、１９……注入回路継手。
Fig. 1 is an overall structural diagram of the device showing an embodiment of manual operation for drug injection according to the present invention, Fig. 2 is a side view of the manual operation lever section, and Figs. 3 and 4 are the two one-way clutches. Figure 3 is a structural explanatory diagram -
A sectional view, FIG. 4 is a - sectional view. 1...Small DC motor, 2...Reduction gear mechanism,
3... Rotation control unit, 4... Bearing, 5... Differential gear mechanism, 6... Gear, 6a... Sleeve, 7... Spring, 8... Screw shaft, 9... Drive body, 10...
... Bearing housing, 10a... Bearing, 11... Spring, 12... Return spring, 13...
Manual operation lever, 14... Manual gear, 15... Gear, 15a... Sleeve, 16... Stopper pin, 17... Syringe inner cylinder, 18... Syringe outer cylinder, 19... Injection circuit joint.
Claims (1)
とネジ軸および駆動体とからなり、モータの回転
を微速の直線運動に変え、シリンジ内筒を押し込
んで薬液の微量注入を行なう注入装置において、
動力伝動ワンウエイ・クラツチおよび手動伝達用
ワンウエイ・クラツチとを駆動軸の両端に備え、
自動注入時には、動力伝達用ワンウエイ・クラツ
チにより直流モータの動力を駆動軸に伝達し、手
動送液時には、外部からの手動操作レバーの回転
を手動伝達用ワンウエイ・クラツチにより、駆動
軸に伝達する機構を有することを特徴とする薬液
の微量注入器。1. In an injection device that uses a battery and a DC motor as a drive source, consists of a deceleration mechanism, a screw shaft, and a drive body, converts the rotation of the motor into slow linear motion, and injects a small amount of drug by pushing the inner cylinder of the syringe,
A power transmission one-way clutch and a manual transmission one-way clutch are provided at both ends of the drive shaft,
During automatic injection, a power transmission one-way clutch transmits the power of the DC motor to the drive shaft, and during manual liquid feeding, a mechanism in which the rotation of the manual operation lever from the outside is transmitted to the drive shaft using a manual transmission one-way clutch. A microinjector for a medicinal solution, characterized in that it has the following features:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56181399A JPS5883969A (en) | 1981-11-12 | 1981-11-12 | Minute amount injecting device of drug liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56181399A JPS5883969A (en) | 1981-11-12 | 1981-11-12 | Minute amount injecting device of drug liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5883969A JPS5883969A (en) | 1983-05-19 |
| JPH0116185B2 true JPH0116185B2 (en) | 1989-03-23 |
Family
ID=16100062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56181399A Granted JPS5883969A (en) | 1981-11-12 | 1981-11-12 | Minute amount injecting device of drug liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5883969A (en) |
-
1981
- 1981-11-12 JP JP56181399A patent/JPS5883969A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5883969A (en) | 1983-05-19 |
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