JP2015116448A - Drip nozzle - Google Patents

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JP2015116448A
JP2015116448A JP2013263608A JP2013263608A JP2015116448A JP 2015116448 A JP2015116448 A JP 2015116448A JP 2013263608 A JP2013263608 A JP 2013263608A JP 2013263608 A JP2013263608 A JP 2013263608A JP 2015116448 A JP2015116448 A JP 2015116448A
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nozzle
opening
communication hole
chemical solution
flow path
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山崎幸一
Koichi Yamazaki
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BETERU KK
Bethel KK
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BETERU KK
Bethel KK
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Abstract

PROBLEM TO BE SOLVED: To provide a drip nozzle capable of controlling a drip of a drug solution with temperature expansion just as intended and, after the use, preventing the drug solution from being jetted out from the tip of the nozzle.SOLUTION: The drip nozzle connected to a drug solution container 11 storing the drug solution, includes a communication hole 10 communicated to the inside of the drug solution container 11; and a passage 7 for supplying the drug solution from the communication hole 10 to an opening part 8 at the tip end. The cross section of the communication hole 10 is 0.04 mmto 0.11 mm, a ratio of a volume to a surface area of the passage 7 is 7.0-10.5, the depth of the opening part 8 is 0.7 mm to 1.2 mm, and the area of the opening part 8 is 2 mmto 5 mm.

Description

本発明は、歯科あるいは眼科等において、一定量の薬液を滴下するための滴下ノズルに関するものである。   The present invention relates to a dropping nozzle for dropping a certain amount of a chemical solution in dentistry or ophthalmology.

一般に、歯科用あるいは眼科用に、薬液を収容する容器に接続されて、定量の薬液を患部に滴下する小型の滴下ノズルが使用されている。例えば、薬液を収容する本体の首部にはめこまれた滴下ノズルがある(例えば、特許文献1参照)。この滴下ノズルは、先端の液溜室の底部を塞ぐ隔壁に連通孔を設け、本体から供給される薬液を連通孔から液溜室に供給して先端面から滴下するようにしたものである。   In general, a small drop nozzle connected to a container for storing a chemical solution and dropping a fixed amount of the chemical solution onto an affected part is used for dentistry or ophthalmology. For example, there is a dripping nozzle that is fitted in the neck of a main body that stores a chemical (for example, see Patent Document 1). This dripping nozzle is provided with a communication hole in a partition wall that closes the bottom of the liquid reservoir chamber at the tip, and a chemical solution supplied from the main body is supplied from the communication hole to the liquid reservoir chamber and dropped from the tip surface.

特開2009−261453号公報JP 2009-261453 A

この種の滴下ノズルは、気温、気圧などの環境条件に左右されず、常に適量の薬液が滴下されることが必要である。従来の滴下ノズルは、このような配慮がなされていないため、特に歯科あるいは眼科用など温度膨張のある薬液を意図した通りに滴下コントロールすることが困難であった。 This type of dripping nozzle is not affected by environmental conditions such as air temperature and atmospheric pressure, and it is always necessary to dripping an appropriate amount of chemical solution. Since the conventional dripping nozzle does not take such consideration, it has been difficult to control dripping as intended for a drug solution having a temperature expansion such as dental or ophthalmic use.

さらにまた、温度条件などによっては、薬液を滴下したあと元に戻す際にノズルの先端から薬液が噴出するという現象が生じていた。 Furthermore, depending on temperature conditions, there has been a phenomenon in which the chemical liquid is ejected from the tip of the nozzle when the chemical liquid is dropped and then returned to its original state.

本発明は、温度膨張のある薬液を意図した通りに滴下コントロールし得るとともに、使用後にノズルの先端から薬液が噴出することのない滴下ノズルを提供することを目的とする。 An object of the present invention is to provide a dripping nozzle that can perform dripping control of a chemical solution having a temperature expansion as intended and does not eject the chemical solution from the tip of the nozzle after use.

請求項1記載の発明は、薬液を収容した薬液容器に接続され、該薬液容器内に通ずる連通孔と、該連通孔から先端の開口部に薬液を供給する流路とを有する滴下ノズルであって、前記連通孔の断面積が0.04平方ミリメータ乃至0.11平方ミリメータであり、前記流路の表面積に対する体積の比が7.0乃至10.5、前記開口部の深さが0.7ミリメータ乃至1.2ミリメータ、前記開口部の面積が2平方ミリメータ乃至5平方ミリメータの構成とするものである。 The invention according to claim 1 is a dropping nozzle that is connected to a chemical solution container that contains a chemical solution, and has a communication hole that communicates with the chemical solution container, and a flow channel that supplies the chemical solution from the communication hole to the opening at the tip. The cross-sectional area of the communication hole is 0.04 square millimeters to 0.11 square millimeters, the ratio of the volume to the surface area of the flow path is 7.0 to 10.5, and the depth of the opening is 0.00. 7 mm to 1.2 mm, and the opening has an area of 2 mm 2 to 5 mm 2.

請求項2記載の発明は、前記流路の中央に仕切板を設けて2列の流路を形成したものである。なお、仕切り板は、表面積と体積の関係上便宜的に2列としたものであり、2列以上の流路を形成しても良い。流路に凹凸を設けたり、流路表面の面を荒れさせることによって、表面積と体積の関係をコントロールしても良い。 According to the second aspect of the present invention, a partition plate is provided at the center of the flow path to form two rows of flow paths. Note that the partition plates are two rows for convenience in relation to the surface area and volume, and two or more rows of flow paths may be formed. The relationship between the surface area and the volume may be controlled by providing irregularities in the flow path or roughening the surface of the flow path.

本発明の滴下ノズルは、温度膨張のある薬液を意図した通りに滴下コントロールし得るとともに、使用後にノズルの先端から薬液が噴出することを防止することができる。 The dripping nozzle of the present invention can control dripping of a chemical liquid having a temperature expansion as intended, and can prevent the chemical liquid from being ejected from the tip of the nozzle after use.

本発明の第1実施形態の縦断側面図である。It is a vertical side view of 1st Embodiment of this invention. 図1の平面図である。FIG. 2 is a plan view of FIG. 本発明の第2実施形態の縦断側面図である。It is a vertical side view of 2nd Embodiment of this invention. 図3の平面図である。FIG. 4 is a plan view of FIG. 3. 連通孔の断面積と噴出しの有無との関係を示す表である。It is a table | surface which shows the relationship between the cross-sectional area of a communicating hole, and the presence or absence of ejection. 流路表面積、流路体積の変化と滴下コントロールの関係を示す表である。It is a table | surface which shows the relationship between a change of a channel surface area and a channel volume, and dripping control. 開口部の深さ、断面積の変化と薬液噴出の関係を示す表である。It is a table | surface which shows the relationship between the depth of an opening part, a change of a cross-sectional area, and a chemical | medical solution ejection. 第1実施形態の滴下ノズルの寸法を示す縦断側面図である。It is a vertical side view which shows the dimension of the dripping nozzle of 1st Embodiment.

図1は本発明の滴下ノズルの第1実施形態を示す縦断側面図、図2は平面図である。
本実施形態の滴下ノズル1は、薬液を貯留する薬液容器2の口部に装着され、薬液容器2と一体的に接続された状態で使用される。
FIG. 1 is a longitudinal side view showing a first embodiment of the dropping nozzle of the present invention, and FIG. 2 is a plan view.
The dripping nozzle 1 of the present embodiment is attached to the mouth portion of the chemical liquid container 2 that stores the chemical liquid, and is used in a state of being integrally connected to the chemical liquid container 2.

本実施形態の滴下ノズル1は、円筒状の本体3の上部に隔壁部4及び隔壁部4と一体のフランジ5が形成され、隔壁部4上にはノズル部6が一体に形成されている。ノズル部6は、底部が隔壁部4と一体に形成されており、かつ隔壁部4と一体の底部側の径が大きく、先端部の径が小さい先細りの円筒形状である。このノズル部6の内部に流路7が形成されている。ノズル部6の先端には流路7よりも径が大きい円形断面の開口部8が形成されている。隔壁部4には、本体3の内部と流路7との間に通ずる連通孔10が形成されている。 In the dropping nozzle 1 of the present embodiment, a partition wall 4 and a flange 5 integral with the partition wall 4 are formed on an upper portion of a cylindrical body 3, and a nozzle portion 6 is integrally formed on the partition wall 4. The nozzle portion 6 has a tapered cylindrical shape whose bottom portion is integrally formed with the partition wall portion 4 and has a large diameter on the bottom side integral with the partition wall portion 4 and a small diameter at the tip portion. A flow path 7 is formed inside the nozzle portion 6. An opening 8 having a circular cross section having a diameter larger than that of the flow path 7 is formed at the tip of the nozzle portion 6. The partition wall 4 is formed with a communication hole 10 that communicates between the inside of the main body 3 and the flow path 7.

容器2に薬液を収容し、ノズル部6の先端の開口部8より患部(歯又は眼など)に薬液を滴下して使用する。歯科で使用する薬液は、ある程度の粘性があり、かつ温度により膨張する性質の液体であり、このような性質の薬液を意図した通りに一定量を滴下(滴下コントロール)させる(条件1)とともに、使用後に元に戻す際にノズル部6の先端の開口部8から噴き出さないようにする(条件2)ことが重要である。 A chemical solution is accommodated in the container 2 and used by dripping the chemical solution from the opening 8 at the tip of the nozzle portion 6 onto the affected part (such as teeth or eyes). The drug solution used in dentistry is a liquid having a certain degree of viscosity and expanding in response to temperature. A predetermined amount of the drug solution having such a property is dripped (drip control) as intended (Condition 1), It is important not to eject from the opening 8 at the tip of the nozzle portion 6 (condition 2) when returning to the original state after use.

条件1である薬液の滴下コントロールは、滴下ノズル1の本体3の内部と流路7間に通ずる連通孔10の断面積に依存するとともに、流路7の内壁の表面積(S平方ミリメートル)と流路7の体積(M立方ミリメートル)の比(S/M)にも依存する。これらの値により薬液の滴下のスピードが変化するため、これを適正な値とすることにより、滴下コントロールが可能となる。
条件2である開口部8からの噴き出し防止は、開口部の深さと面積に依存する。条件1及び条件2を確認する実験結果は後述する。
The dripping control of the chemical solution which is condition 1 depends on the cross-sectional area of the communication hole 10 communicating between the inside of the main body 3 of the dripping nozzle 1 and the flow path 7, and the surface area (S square millimeter) of the inner wall of the flow path 7 and the flow It also depends on the volume (M cubic millimeter) ratio (S / M) of the path 7. Since these values change the dropping speed of the chemical solution, it is possible to control dropping by setting this value to an appropriate value.
The prevention of ejection from the opening 8 which is condition 2 depends on the depth and area of the opening. Experimental results for confirming Condition 1 and Condition 2 will be described later.

図3、図4は本発明の滴下ノズルの第2実施形態の縦断側面図、図2は平面図である。第2実施形態では、流路の中央部に仕切板11を設け、この仕切板11の両側に2列の流路7a、7bを形成し、隔壁部4にこれらの流路7a、7bに通ずる連通孔10a、10bを形成したものである。このように2列の流路7a、7bを形成することにより、流路の内壁の表面積が大きくなるため、薬液が流れる際の摩擦抵抗が大きくなり、滴下のスピードを落とすことができるため、滴下コントロールがしやすくなるという効果が得られる。 3 and 4 are longitudinal side views of a second embodiment of the dropping nozzle of the present invention, and FIG. 2 is a plan view. In the second embodiment, a partition plate 11 is provided at the center of the flow path, two rows of flow paths 7a and 7b are formed on both sides of the partition plate 11, and the partition wall 4 communicates with these flow paths 7a and 7b. Communication holes 10a and 10b are formed. By forming the two rows of flow paths 7a and 7b in this way, the surface area of the inner walls of the flow paths is increased, so that the frictional resistance when the chemical solution flows is increased, and the dropping speed can be reduced. The effect of being easy to control is obtained.

図5は、連通孔10の断面積の変化に対する滴下コントロールの良否(条件1)を実験した結果を示している。連通孔10が直径Aの円形の場合(図8参照)は、πA/4で表される。この実験は、第1実施形態の滴下ノズルであって、開口部8の直径が2.25ミリメートル、流路7の直径が1.6ミリメートルのもので実験した。 FIG. 5 shows the results of experiments on the quality (condition 1) of the dropping control with respect to the change in the cross-sectional area of the communication hole 10. If the communication hole 10 is circular with a diameter A (see FIG. 8) is represented by? Pa 2/4. This experiment was performed using the dropping nozzle according to the first embodiment in which the diameter of the opening 8 is 2.25 mm and the diameter of the flow path 7 is 1.6 mm.

図5の結果から、第1実施形態の滴下ノズルでは、連通孔10の断面積を0.04平方ミリメートル乃至0.11平方ミリメートルとすることにより、最適の滴下コントロールを得ることができ、それ以外の寸法では滴下コントロールできないか、もしくはしずらいことが確かめられた。なお、連通孔10の形状は、図1、図2の実施形態では円形の例を示しているが、連通孔10の形状は限定されない。参考例として、連通孔10が円形の場合は、直径を0.11ミリメートル乃至0.19ミリメートルの場合に最適の滴下コントロールを得ることができることが確かめられた。 From the result of FIG. 5, in the dropping nozzle of the first embodiment, the optimal dropping control can be obtained by setting the cross-sectional area of the communication hole 10 to 0.04 square millimeters to 0.11 square millimeters. It was confirmed that it was difficult or difficult to control the dripping with the size of. In addition, although the shape of the communicating hole 10 has shown the circular example in embodiment of FIG. 1, FIG. 2, the shape of the communicating hole 10 is not limited. As a reference example, when the communication hole 10 is circular, it has been confirmed that optimum dropping control can be obtained when the diameter is 0.11 to 0.19 mm.

なお、実験で使用した薬液は、接着性モノマー(MDP)、親水性モノマー(HREMA)、架橋性モノマー(BiS−GMA)、光重合触媒、シリカ系マイクロフィラー、精製水、エタノール、を含む光重合型の歯科充填用コンポジットレジンであった(以下の実験も同様)。 The chemical solution used in the experiment is a photopolymerization including an adhesive monomer (MDP), a hydrophilic monomer (HREMA), a crosslinkable monomer (BiS-GMA), a photopolymerization catalyst, a silica microfiller, purified water, and ethanol. It was a composite resin for dental filling of the mold (the same applies to the following experiments).

図6に、流路7の内壁の表面積Sと流路7の体積Mの比(S/M)の変化に対する滴下コントロールの良否(条件1)を実験した結果を示している(この比の計算方法は図8に示す)。
図6の結果から、この流路表面積S/流路体積Mを7.0乃至10.5とすることにより、最適の滴下コントロールを得ることができることが確かめられた。
FIG. 6 shows the result of an experiment on the quality of dripping control (condition 1) with respect to the change in the ratio (S / M) of the surface area S of the inner wall of the flow path 7 to the volume M of the flow path 7 (calculation of this ratio). The method is shown in FIG.
From the results shown in FIG. 6, it was confirmed that optimal dropping control can be obtained by setting the channel surface area S / channel volume M to 7.0 to 10.5.

図8に示すように、流路7の内壁の表面積S=流路の円周×流路の長さDであらわされる。図示のように、直径Cの円形の場合は、S=πC×Dで計算される。
また、流路7の体積M=流路の断面積×流路の長さDで計算される。流路7が円形の場合は、流路7の断面積は、直径Cの円形の場合は、πC/4で表される。
As shown in FIG. 8, the surface area S of the inner wall of the flow path 7 = the circumference of the flow path × the length D of the flow path. As shown in the figure, in the case of a circle having a diameter C, S = πC × D is calculated.
Further, the volume M of the flow path 7 = the cross-sectional area of the flow path × the length D of the flow path is calculated. If the flow path 7 is circular, the cross-sectional area of the channel 7, in the case of a circle having a diameter C, represented by πC 2/4.

条件2である、ノズル部6の先端の開口部8からの薬液噴き出しの有無は、開口部8の深さ及び断面積に依存する。この値が小さすぎ又は大きすぎると、薬液の溜りが適量でなくなり、使用後に温度変化などにより開口部8から噴き出してしまう。 The presence / absence of the chemical liquid ejection from the opening 8 at the tip of the nozzle 6 that is the condition 2 depends on the depth and the cross-sectional area of the opening 8. If this value is too small or too large, the amount of the chemical solution will not be adequate, and will be ejected from the opening 8 due to temperature change after use.

図7に、開口部8の深さF(図8参照)と、開口部8の断面積の変化に対する薬液噴出しの有無を実験した結果を示している。この実験は、第1実施形態の滴下ノズルであって、連通孔10の直径が0.15ミリメートル、流路7の直径が1.6ミリメートルのもので実験した。なお、開口部8が直径Eの円形の場合は、断面積はπE/4で表される。 FIG. 7 shows the results of an experiment of the presence or absence of chemical liquid ejection with respect to the depth F of the opening 8 (see FIG. 8) and the change in the cross-sectional area of the opening 8. This experiment was performed using the dropping nozzle according to the first embodiment in which the communication hole 10 has a diameter of 0.15 millimeters and the flow path 7 has a diameter of 1.6 millimeters. In the case opening 8 is circular with a diameter E, the cross-sectional area is represented by πE 2/4.

図7の結果から、開口部8から噴き出さないようにするには、開口部8の深さFを0.7ミリメートル乃至1.2ミリメートル、開口部8の断面積を2ミリメートル乃至5ミリメートルとすることが必要であることが確かめられた。このような数値の構成であれば、第2実施形態の仕切板11の枚数や形状を変えても開口部8からの噴出しはないことが確かめられた。 From the result of FIG. 7, in order not to eject from the opening 8, the depth F of the opening 8 is 0.7 mm to 1.2 mm, and the sectional area of the opening 8 is 2 mm to 5 mm. It was confirmed that it was necessary to do. With such a numerical configuration, it was confirmed that even if the number and shape of the partition plates 11 of the second embodiment were changed, there was no ejection from the opening 8.

以上のように、本発明の滴下ノズルによれば、連通孔10、流路7及び開口部8の寸法や形状を最適に規定することにより、薬液の滴下コントロールが可能となり、かつ、開口部8からの薬液の噴出を防止することが可能となる。




As described above, according to the dropping nozzle of the present invention, it is possible to control the dropping of the chemical solution by optimally defining the dimensions and shapes of the communication hole 10, the flow path 7 and the opening 8, and the opening 8. It is possible to prevent the liquid chemical from being ejected from.




Claims (2)

薬液を収容した薬液容器に接続され、該薬液容器内に通ずる連通孔と、該連通孔から先端の開口部に薬液を供給する流路とを有する滴下ノズルであって、
前記連通孔の断面積が0.04平方ミリメータ乃至0.11平方ミリメータであり、前記流路の表面積に対する体積の比が7.0乃至10.5、前記開口部の深さが0.7ミリメータ乃至1.2ミリメータ、前記開口部の面積が2平方ミリメータ乃至5平方ミリメータの構成であることを特徴とする滴下ノズル。
A dripping nozzle connected to a chemical solution container containing a chemical solution and having a communication hole communicating with the chemical solution container, and a flow channel for supplying the chemical solution from the communication hole to the opening at the tip,
The cross-sectional area of the communication hole is 0.04 square millimeter to 0.11 square millimeter, the ratio of the volume to the surface area of the flow path is 7.0 to 10.5, and the depth of the opening is 0.7 millimeter. A dripping nozzle characterized in that it has a configuration of 1.2 mm to 2 mm and the area of the opening is 2 mm 2 to 5 mm 2.
前記流路の中央に仕切板を設けて2列以上の流路を形成したことを特徴とする請求項1記載の滴下ノズル。






The dropping nozzle according to claim 1, wherein a partition plate is provided in the center of the flow path to form two or more rows of flow paths.






JP2013263608A 2013-12-20 2013-12-20 Drip nozzle Pending JP2015116448A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021115394A (en) * 2020-01-29 2021-08-10 ロート製薬株式会社 Nozzle for liquid container and liquid container

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07275322A (en) * 1994-04-12 1995-10-24 Rohto Pharmaceut Co Ltd Structure of mouth of eyedropper or the like
JP2009261453A (en) * 2008-04-22 2009-11-12 Hanshin Kasei Kogyo Kk Dripping nozzle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07275322A (en) * 1994-04-12 1995-10-24 Rohto Pharmaceut Co Ltd Structure of mouth of eyedropper or the like
JP2009261453A (en) * 2008-04-22 2009-11-12 Hanshin Kasei Kogyo Kk Dripping nozzle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021115394A (en) * 2020-01-29 2021-08-10 ロート製薬株式会社 Nozzle for liquid container and liquid container

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