JP7291540B2 - nasal sprayer - Google Patents

Description

The present invention relates to a nasal medicine ejector for ejecting medicine into the nasal cavity.

Nasal spray ejectors are known that have a nozzle that is inserted into the nasal cavity and that injects a drug into the inside of the nose by ejecting the stored drug from the tip of the nozzle.

For example, Patent Literature 1 below shows a nasal spray dispenser in which a flange (referred to as a base plate 44 in Patent Literature 1) is provided at the lower end of the nozzle. According to this nasal medicine ejector, it is possible to eject the contained medicine by inserting two fingers (for example, the index finger and the middle finger) between the nozzles, applying them to the flange, and pushing down the flange.

Further, in Patent Document 2 below, a pair of pressing arms are provided with a nozzle sandwiched therebetween, fingers are applied to each of these pressing arms, and the pressing arms are tilted toward the nozzle, thereby ejecting a drug from the tip of the nozzle. A nasal sprayer that can be used is shown.

Japanese Unexamined Patent Application Publication No. 2004-844 JP 2010-75874 A

By the way, these nasal medicine ejectors are usually designed to eject medicine using two fingers, but if it is possible to eject even one finger, the operability will be further improved.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a nasal medicine ejector that is easier to operate than conventional ones.

The present invention comprises a container body capable of containing a drug and having a housing space connected to a mouth portion with an open top;
a dispenser that is driven by pushing down the upwardly biased stem to eject the medicine in the storage space from the stem;
a mounting cap that holds the dispenser in a state of being suspended from the mouth and has a cylindrical projection that protrudes from the peripheral wall;
a nozzle holding the stem and having a passage leading to the stem; an outer wall connected to the nozzle and covering the container body; or a notch; and
a support portion that is swingably supported by the cover; an operation portion that is provided on one end side across the support portion; a lever having an arm inserted inside the arm and a semicircular portion provided at the tip of the arm and capable of being engaged with the projection,
The lever has a ready position where the arm engages with the projection from below, and when the arm is pushed up, the stem is relatively pushed down by the nozzle by the semicircular portion that engages with the projection, and the drug is ejected. and a nose spray ejector that is displaceable to and from.

It is preferable that the operating portion of the lever has a larger mass than the arm.

It is preferable that the lever can be displaced to a standing position in which the arm separates from the protrusion and the operating portion stands up.

Preferably, the cover has a stopper that engages the lever displaced to the upright position.

It is preferable to have an overcap mounted on the cover over the nozzle with the lever displaced to the upright position.

In the nasal spray dispenser of the present invention, when the operating part of the lever is pressed, the arm of the lever provided on the opposite side of the operating part pushes up the projection of the mounting cap, thereby relatively pushing down the stem of the dispenser with the nozzle. can be used to drive the dispenser. Since such an operation part can be pressed with one finger, the operability is better than that of a conventional nasal medicine ejector that normally uses two fingers to eject medicine.

By the way, in conventional nasal medicine ejectors such as those disclosed in Patent Documents 1 and 2, when the nozzle is inserted into the nasal cavity and the medicine is ejected, the nozzle moves downward, making it impossible to eject the medicine to the intended site. or the drug may leak out of the nose. In addition, in order to eject the drug to the desired site, the nasal spray ejector must be moved upward in accordance with the movement of the nozzle, which is difficult in terms of operability. On the other hand, in the nasal medicine ejector according to the present invention, the nozzle is provided on the cover, and the arm for ejecting the medicine is configured to be swingably supported by the cover, and the nozzle moves even when the arm is moved. Therefore, the medicine can be sprayed to the desired site with good operability.

Further, when using a lever having an operation portion having a large mass relative to the arm, the weight of the operation portion causes the lever to swing so that the operation portion is positioned below the arm. , the lever can be automatically displaced into the ready position. That is, it is possible to effectively prevent the problem that the lever stops in the middle of swinging.

Furthermore, if the lever can be displaced to the upright position where the arm separates from the projection and the operation part is upright, the lever can be displaced to the upright position when the nasal medicine ejector is not used. In addition, it is possible to prevent the problem of carelessly ejecting the medicine.

Further, if the cover is provided with a stopper that engages with the lever displaced to the upright position, the lever will not be unintentionally displaced to the ready position, thereby further reliably preventing inadvertent ejection of the medicine.

In addition, when an overcap is installed on the cover to cover the nozzle together with the lever displaced to the upright position, adhesion of dust and dirt to the nozzle is suppressed, which is hygienic and not only convenient during transportation and at the store. Since the operation part is not pressed during display, accidental ejection of the medicine can be prevented.

Fig. 2 is an explanatory side view showing a state in which a lever is displaced to an upright position in relation to one embodiment of the nasal medicine ejector according to the present invention; Figure 2 is a perspective view of the nasal spray dispenser shown in Figure 1 (with the overcap removed); FIG. 2 is an explanatory side view showing a state in which a lever is displaced to a ready position in relation to the nasal medicine ejector shown in FIG. 1; 4A and 4B are plan and side views of the nasal spray dispenser shown in FIG. 3; Figure 4 is a perspective view of the nasal spray dispenser shown in Figure 3; FIG. 2 is an explanatory side view showing a state in which a lever is displaced to an ejection position in relation to the nasal medicine ejector shown in FIG. 1;

An embodiment of a nasal medicine ejector according to the present invention will be described below with reference to the drawings. Note that FIG. 1 is a diagram showing the nasal spray ejector of this embodiment in an upright state. It refers to the direction when the vessel is upright. "Rear" is the side (right side in FIG. 1) on which a lever to be described later is provided, and "front" is the opposite side (left side in FIG. 1). Also, "left" and "right" are left and right directions when the nasal spray ejector is viewed from front to back.

The nasal medicine ejector of this embodiment comprises a container body 1, a dispenser 2, a mounting cap 3, a cover 4, a lever 6 and an overcap 7. The cover 4 also has a bottom plate 5 that closes the opening below the cover 4 as shown in FIG.

The container body 1 includes a plate-like bottom portion 1a, a body portion 1b standing from the outer edge of the bottom portion 1a, and a cylindrical mouth portion 1c connected to the upper portion of the body portion 1b. An internal space (accommodating space S) surrounded by the bottom portion 1a, the trunk portion 1b, and the mouth portion 1c can contain a drug for nasal drops. A male screw portion 1d is provided on the outer peripheral surface of the mouth portion 1c. As shown in FIG. 2, the container body 1 in this embodiment has a width in the front-rear direction that is wider than the width in the left-right direction, so that the container body 1 is housed in a fixed direction with respect to the cover 4 .

The dispenser 2 includes a substantially cylindrical cylinder 2a. The cylinder 2a incorporates a check valve 2b, a lower spring 2c, a poppet 2d, a piston 2e, an upper spring 2f, a stem 2g, and the like. A pipe 2h extending toward the bottom 1a is provided at the lower end of the cylinder 2a. According to the dispenser 2 configured in this way, when the stem 2g is moved toward the inside of the cylinder 2a, the piston 2e moves downward within the cylinder 2a and the inside of the cylinder 2a is pressurized. The medicine in 2a can be discharged from the upper end of stem 2g. When the upwardly biased stem 2g rises toward its original position, the piston 2e also moves upward within the cylinder 2a, and the pressure inside the cylinder 2a is reduced accordingly. The contained drug can be sucked into the cylinder 2a. Therefore, by reciprocating the stem 2g, the drug contained in the containing space S can be repeatedly discharged from the stem 2g.

The mounting cap 3 has a cylindrical peripheral wall 3a surrounding the mouth portion 1c. The inner peripheral surface of the peripheral wall 3a is provided with a female threaded portion 3b that fits the male threaded portion 1d. A pair of cylindrical protrusions 3c projecting radially outward are provided on the left and right sides of the outer peripheral surface of the peripheral wall 3a. A top wall 3e extending radially inward is provided at the upper end of the peripheral wall 3a, and a stepped portion 3d protruding upward is provided at the central portion of the top wall 3e. A through hole for inserting the stem 2g is provided in the central portion of the stepped portion 3d, and the inside of the stepped portion 3d is configured to fit and hold the upper end portion of the cylinder 2a. The mounting cap 3 is provided with a cylindrical inner upper peripheral wall 3f that rises upward from the stepped portion 3d and a cylindrical outer upper peripheral wall 3g positioned radially outward of the inner upper peripheral wall 3f. A packing 3h made of a soft material or the like is arranged on the lower surface of the ceiling wall 3e. According to such a mounting cap 3, the stem 2g protrudes from the through hole of the stepped portion 3d, the upper end of the cylinder 2a is fitted into the stepped portion 3d, the packing 3h is arranged below the top wall 3e, and the packing 3h is arranged below the ceiling wall 3e. By screwing the female threaded portion 3b into the male threaded portion 1d, the dispenser 2 can be held so as to be suspended from the mouth portion 1c.

The cover 4 has a nozzle 4a that stands upward. An inner cylindrical wall 4b that holds the upper end of the stem 2g is provided at the center of the nozzle 4a, and a passage 4c formed inside the inner cylindrical wall 4b communicates with the stem 2g. A spout 4d that communicates with the passage 4c and spouts the drug to the outside is provided in the upper portion of the inner cylindrical wall 4b. An outer tubular wall 4e is provided on the radially outer side of the inner tubular wall 4b.

The cover 4 has an outer wall 4f which has a substantially lidded cylindrical shape and which is connected to the outer cylindrical wall 4e and covers the entire container body 1 (covers from the mounting cap 3 to the bottom portion 1a of the container body 1). An annular wall 4g located radially inward of the outer upper peripheral wall 3g of the mounting cap 3 is provided on the lower surface of the outer wall 4f. An opening 4h is provided on the rear upper side surface of the outer wall 4f so as to penetrate the outer wall 4f and reach the protrusion 3c from the outside of the outer wall 4f. A pair of plate-shaped side walls 4j are provided outside the opening 4h in the left-right direction (see FIG. 2). 4k and a shaft hole 4m positioned at the lower end of the vertical groove 4k and supporting the lever 6 so as to swing.

The bottom plate 5 closes the lower opening of the cover 4 . The bottom plate 5 of this embodiment has a claw portion 5a that rises from its outer edge and engages the inner peripheral surface of the cover 4. As shown in FIG. The bottom plate 5 has a pair of vertical plate portions 5b extending upward along the left and right outer peripheral surfaces of the body portion 1b. A projecting projection (stopper) 5c is provided.

The lever 6 has a substantially cylindrical support portion 6a with a width that fits inside the pair of side walls 4j. At both left and right end portions of the support portion 6a, there are provided shaft portions 6b which are cylindrical and accommodated in the shaft holes 4m. Further, on the outer peripheral surface of the support portion 6a, an operating portion 6c having a plate shape and having an uneven portion provided on one side thereof is provided. A pair of arms 6d are provided at both left and right ends of the outer peripheral surface of the support portion 6a on the opposite side of the operation portion 6c. The arm 6d of this embodiment extends linearly and has a semicircular portion 6e at its tip. The lever 6 has a position where the operating portion 6c stands up (standing posture) as shown in FIG. ) and a position (ejection position) where the projection 3c is pushed up by the lever 6 and the container body 1 is lifted upward as shown in FIG.

The overcap 7 has a lidded tubular shape and is provided in a form detachably attached to the cover 4 .

An overcap 7 can be attached as shown in FIG. In this state, since the nozzle 4a is covered with the overcap 7, it is possible to suppress adhesion of dirt and dust to the nozzle 4a. Further, since the lever 6 is also accommodated inside the overcap 7, the operating portion 6c is not pressed during transportation or display at the store, and accidental ejection of the medicine can be prevented. In addition, as shown in FIG. 1, the operating portion 6c of the present embodiment does not protrude further rearward than the cover 4 in the upright position, so that the outer peripheral wall of the overcap 7 can be aligned with the outer peripheral wall of the cover 4. It also looks great.

In order to eject the medicine, the overcap 7 shown in FIG. 1 is removed and the state shown in FIG. 2 is obtained. The tip of the semicircular portion 6e of the lever 6 in the upright position is engaged with the stopper 5c, so that the lever 6 does not inadvertently swing.

When a finger is placed on the operating portion 6c and a force is applied backward, the engagement between the semicircular portion 6e and the stopper 5c is released, and the lever 6 is moved to the semicircular portion as shown in FIGS. 6e is displaced to a position (preparation position) where it engages with projection 3c from below. In addition, in the lever 6 of this embodiment, the mass of the operation portion 6c is larger than that of the arm 6d including the semicircular portion 6e. Therefore, when the engagement between the semicircular portion 6e and the stopper 5c is released, the lever 6 can be automatically displaced to the ready position by its own weight.

After that, the lever 6 displaced to the ready position shown in FIG. In this embodiment, since the portion to be pressed with a finger is only the operating portion 6c, it can be operated with one finger. When the lever 6 is displaced to the ejection position shown in FIG. 6 by pressing the operating portion 6c in this way, the projection 3c is pushed up by the semi-circular portion 6e, the container body 1 is lifted upward, and the stem 2g is moved to the nozzle. At 4a, they are pushed down relatively. Since the piston 2e shown in FIG. 1 moves inside the cylinder 2a and the inside of the cylinder 2a is pressurized, the medicine contained in the cylinder 2a passes through the inside of the stem 2g and the inside of the passage 4c. It passes through and is ejected from the ejection port 4d. Here, when the container body 1 is lifted upward, as shown in FIG. The outer upper peripheral wall 3g also rises while being guided by the annular wall 4g. That is, since the container body 1 can be lifted without being tilted forward, backward, leftward, or rightward, an excessive force is not required when pressing the operating portion 6c. When the pressure on the operating portion 6c is released, the upwardly biased stem 2g moves to its original position, and accordingly the piston 2e shown in FIG. 1 returns to its original position, reducing the pressure in the cylinder 2a. Therefore, the drug stored in the storage space S is sucked into the cylinder 2a through the pipe 2h. Therefore, by repeatedly pressing and releasing the operation portion 6c, the medicine can be repeatedly ejected from the ejection port 4d. Since the container body 1 is lifted upward when the operating portion 6c is pressed, the container body 1 moves downward by its own weight when the pressure on the operating portion 6c is released. That is, by releasing the pressure on the operating portion 6c, the container body 1 moves downward in addition to the restoring force of the stem 2g that is biased upward. It can be reliably returned to the ready position shown in FIG.

Although the nasal medicine ejector according to the present invention has been described above while showing specific embodiments, the nasal medicine ejector according to the present invention is not limited to the above-described embodiments, and can be varied within the scope of the claims. Also included are modifications of For example, the arm 6d may have a configuration in which the semicircular portion 6e provided at the tip thereof is omitted and the arm 6d only extends linearly. Further, the shaft portion 6b provided in the lever 6 and the shaft hole 4m provided in the cover 4 may be replaced with each other. The opening 4h is a hole provided in the cover 4, but the hole may be widened to the lower end of the cover 4 to form a notch into which the arm 6d of the lever 6 is inserted.

Reference Signs List 1: Container body 1a: Bottom 1b: Body 1c: Mouth 1d: Male screw 2: Dispenser 2a: Cylinder 2b: Check valve 2c: Lower spring 2d: Poppet 2e: Piston 2f: Upper spring 2g: Stem 2h: Pipe 3: Mounting cap 3a: Peripheral wall 3b: Female threaded portion 3c: Protrusion 3d: Stepped portion 3e: Ceiling wall 3f: Inner upper peripheral wall 3g: Outer upper peripheral wall 3h: Packing 4: Cover 4a: Nozzle 4b: Inner cylindrical wall 4c: Passage 4d: Jet port 4e: Outer cylindrical wall 4f: Outer wall 4g: Annular wall 4h: Opening 4j: Side wall 4k: Vertical groove 4m: Shaft hole 5: Bottom plate 5a: Claw portion 5b: Vertical plate portion 5c: Convex portion (stopper )
6: Lever 6a: Support portion 6b: Shaft portion 6c: Operation portion 6d: Arm 6e: Semicircular portion 7: Overcap S: Accommodating space

Claims (5)

a container main body having a storage space capable of storing a drug and connected to a mouth portion with an open top;
a dispenser that is driven by pushing down the upwardly biased stem to eject the medicine in the storage space from the stem;
a mounting cap that holds the dispenser in a state of being suspended from the mouth and has a cylindrical projection that protrudes from the peripheral wall;
a nozzle holding the stem and having a passage leading to the stem; an outer wall connected to the nozzle and covering the container body; or a notch; and
a support portion that is swingably supported by the cover; an operation portion that is provided on one end side across the support portion; a lever having an arm inserted inside the arm and a semicircular portion provided at the tip of the arm and capable of being engaged with the projection,
The lever has a ready position where the arm engages with the projection from below, and when the arm is pushed up, the stem is relatively pushed down by the nozzle by the semicircular portion that engages with the projection, and the drug is ejected. and a nose spray ejector that is displaceable to. 2. The nasal spray dispenser according to claim 1, wherein the operating portion of the lever has a larger mass than the arm. 3. The nasal spray dispenser according to claim 1, wherein the lever is displaceable to a standing position in which the arm separates from the projection and the operating portion stands up. 4. The nasal spray dispenser of claim 3, wherein the cover has a stopper that engages the lever displaced to the upright position. 5. A nasal spray dispenser according to claim 3 or 4, further comprising an overcap mounted on said cover to cover said nozzle together with said lever displaced to the upright position.

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