JP2008143587A - Inside plug for medicinal solution container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To deliver a predetermined amount of medicinal solution per a pressing operation regardless of a time length of the pressing operation. <P>SOLUTION: An inside plug for a medicinal solution container includes a nozzle member 11 having a spout 11d at the tip end, a sponge body 12 made of an elastic material and placed inside the nozzle member 11 via a receiving member 14, and a pressing member 13 placed inside the nozzle member 11 so as to be positioned on the sponge body 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an inner plug of a chemical solution container that is particularly suitable for a chemical solution that is used by discharging a fixed amount to an affected area, such as athlete's foot medicine.

  A special athlete's foot container is known in order to discharge and apply an appropriate amount of drug solution to the affected area (Patent Document 1).

This is configured such that a nozzle member is attached to the mouth of a chemical container, and a valve body with a spring is built in the nozzle member. The valve body can open and close the spout at the tip of the nozzle member, and the plug portion integral with the valve body protrudes to the outside through the spout. Therefore, if the plug part is pressed against the affected part and the valve body is pushed inside the nozzle member against the spring, the spout opens and the chemical solution flows out. The medicinal solution can be applied to the affected area through the tip of the stopper.
Japanese Utility Model Publication No.59-33412

  When such a conventional technique is used, the chemical solution tends to waste excessively when the valve body is pushed into the nozzle member and the outlet is opened to continuously flow out from the spout. was there.

  Therefore, in view of the problems of the prior art, the object of the present invention is to incorporate a sponge body having an open cell structure that can be impregnated and held with a chemical solution into a nozzle member, so that each push operation is substantially performed regardless of the push operation time. It is another object of the present invention to provide an internal stopper for a chemical solution container that can discharge a certain amount of chemical solution.

  In order to achieve this object, the structure of the present invention includes a nozzle member that is attached to the mouth of a chemical container and has a spout at the tip, an elastic sponge body that is housed in the nozzle member via a receiving member, and a sponge A push member that is positioned on the body and is internally mounted on the nozzle member, and the push member elastically contracts the sponge body by pushing the plug portion protruding from the tip of the nozzle member through the spout. Thus, the gist of the present invention is to discharge the chemical solution held inside the sponge body from the spout.

  The push member can integrally form a main body portion having an outer flange at the lower end, a cylindrical portion with a window on the main body portion, and a plug portion on the cylindrical portion. Can be formed on the peripheral surface.

  The sponge body may be a polyether flexible urethane foam having 25 to 45 cells / 25 mm cells.

  According to such a configuration of the invention, the nozzle member attached to the mouth portion of the chemical solution container is internally provided with a push member and a sponge body, and the plug portion of the push member has a spout at the tip of the nozzle member. Project outside. Therefore, when the pushing member is pushed through the plug portion, the sponge body is elastically contracted, and the chemical liquid impregnated in the sponge body can be discharged from the spout, and thus discharged. The amount of the chemical liquid can be controlled to a substantially constant amount for each pressing operation regardless of the pressing operation time of the pressing member. However, when the push member is pushed, the sponge body is impregnated and held sufficiently uniformly with the chemical solution in the chemical solution container. Appropriate time intervals necessary to uniformly impregnate the sponge body shall be provided.

  When discharging the chemical solution, the chemical solution container is inverted, and when the pressing force of the pushing operation on the push member is released, the sponge body is elastically restored and the chemical solution is impregnated into the sponge member. In order to quickly and uniformly impregnate the sponge body, a through hole having a necessary and sufficient opening area is formed. Moreover, it is preferable to finish the tip of the plug part into a smooth dome shape in order to spread the chemical solution while contacting the affected part.

  A push member with a body part with an outer flange, a cylindrical part with a window, and a plug part is positioned on the sponge body so that the plug part protrudes into the spout and the outer flange is landed on the upper surface of the sponge body. And can be stably housed in the nozzle member. The push member is always urged toward the upper spout side by the elasticity of the sponge body, and is positioned by closing the spout via a ring-shaped inclined surface between the plug part and the main body part. When the chemical container is inverted and the push member is pushed, the sponge body elastically shrinks and the chemical liquid inside the sponge body is released, but the released chemical liquid passes through the inside of the hollow body and passes through the window to form a cylinder. It flows out to the outside of the part, flows along the peripheral surface of the plug part, and is discharged to the outside through the spout.

  The recess on the peripheral surface of the spout part forms an outflow path for the chemical solution between the inner surface of the spout and does not hinder the discharge of the chemical solution. In addition, by providing at least three or more strips at equal intervals with respect to the peripheral surface of the plug portion, the axial recess can prevent the plug portion from inadvertently inclining when spreading the chemical solution. it can.

  The sponge body is preferably an open cell polyether-based flexible urethane foam having 25 to 45 cells / 25 mm cells. However, the number of cells here refers to a measured value according to JIS K 6400-1 Appendix 1. Even if the number of cells is less than 25 or more than 45, there is a tendency that variation in the amount of the chemical discharged every time the pushing member is pushed is increased. The material of the sponge body is excellent in wettability to chemicals and chemical resistance, and has good restorability after elastic deformation, and may be other than polyether urethane foam.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The inner stopper of the chemical solution container is mainly composed of the nozzle member 11, the sponge body 12, and the pushing member 13 (FIGS. 1 and 2).

  The chemical solution container 20 has a mouth portion 21. A male screw 22 is formed on the outer periphery of the mouth portion 21. In addition, the trunk | drum 23 of the chemical | medical solution container 20 is not restricted to the vertically long cylindrical shape of illustration, Other arbitrary shapes may be sufficient.

  The nozzle member 11 is attached to the mouth portion 21 of the chemical liquid container 20. The nozzle member 11 is formed by integrally molding a hollow frustum-shaped nozzle portion 11a, an outer flange 11b at the lower end of the nozzle portion 11a, and a skirt portion 11c extending from the lower surface of the outer flange 11b. The nozzle member 11 is attached to the mouth portion 21 by press-fitting the skirt portion 11 c into the mouth portion 21. The lower surface of the outer flange 11 b is in contact with the upper end surface of the mouth portion 21, and the outer flange 11 b is formed to have the same outer diameter as the outer diameter of the upper end of the mouth portion 21. Further, a spout 11d is opened at the tip surface of the nozzle portion 11a.

  The sponge member 12 made of an elastic material is housed in the skirt portion 11 c of the nozzle member 11 via the receiving member 14. The sponge body 12 is a chemical-resistant foam material having an open cell structure having a predetermined number of cells, and is formed in a columnar shape in a free state (FIGS. 2 and 3).

  The receiving member 14 is formed in a shallow bottomed cylindrical shape. The receiving member 14 can be combined with the large-diameter portion 11e at the lower inner surface of the skirt portion 11c of the nozzle member 11. An engaging rib 14a that can be elastically fitted to the engaging step portion 11f at the lower end of the large-diameter portion 11e is formed at the lower outer periphery of the receiving member 14, and the bottom surface 14b has through holes 14c, 14c ... are opened. Therefore, the receiving member 14 can accommodate the sponge body 12 and can be elastically attached to the lower portion of the skirt portion 11c. The outer diameter of the sponge body 12 is smaller than the inner diameter of the receiving member 14, and the through holes 14 c, 14 c... Of the receiving member 14 are large enough to be blocked by the sponge body 12 and have a sufficiently large total opening area. An array is formed so that

  The push member 13 is a hollow truncated cone-shaped main body portion 13a that can be inserted in the axial direction from the lower side of the nozzle member 11, a cylindrical portion 13b that stands on the main body portion 13a, and a stand that stands on the cylindrical portion 13b. The actual plug part 13c is integrally formed. An outer flange 13d is formed at the lower end of the main body 13a, and vertically long windows 13e, 13e,... Are formed on the cylindrical portion 13b, and axial recesses 13f, 13f are formed on the peripheral surface of the plug portion 13c. ... are formed (FIGS. 3 and 4). Each recess 13f is formed in a V-shaped cross section having an apex angle of 120 °. 4A to 4C are a top view, a partially broken front view, and a bottom view of the pressing member 13, respectively.

  The upper part of the inner surface of the main body part 13a is rounded up to a straight tube having the same inner diameter as the outer diameter of the cylindrical part 13b. Further, the cylindrical portion 13b is solidly formed on the side of the stopper portion 13c from the upper end of the windows 13e, 13e. A narrow ring-shaped inclined surface 13g is formed between the cylindrical portion 13b and the plug portion 13c, and the windows 13e, 13e,..., And the concave strips 13f, 13f are respectively formed around the cylindrical portion 13b and the plug portion 13c. It is arrange | positioned at equal intervals with respect to the surface.

  When the pushing member 13 is installed in the nozzle member 11 together with the sponge body 12 and the receiving member 14, the pushing member 13 is biased upward by the elasticity of the sponge body 12, and the plug portion 13 c is connected to the nozzle member 11 via the spout 11 d of the nozzle member 11. It protrudes at the tip of (Fig. 2). At this time, the outer flange 13d is landed on the upper surface of the sponge body 12, and the ring-shaped inclined surface 13g is engaged with the inclined surface 11g of the inner surface of the nozzle member 11 continuing from the lower end of the outlet 11d from below. The pushing member 13 is positioned in the axial direction while closing. In addition, the spigot part 13c which penetrates the spout 11d from the bottom to the top can form the chemical | medical solution outflow paths R, R ... corresponding to the concave strips 13f, 13f ... on the inner surface of the spout 11d (FIG. 5). ).

  A screw type cap 30 is attached to the chemical solution container 20 (FIG. 1). A female screw 31 adapted to the male screw 22 on the side of the chemical solution container 20 is formed at the lower part of the inner surface of the cap 30, and knurlings 32, 32... For preventing slip are formed on the outer surface of the cap 30. In addition, upper and lower skirts 33, 34 are suspended inside the cap 30. When the cap 30 is attached to the mouth portion 21 of the drug solution container 20 via the male screw 22 and the female screw 31, the skirts 33, 34 are The outer flange 11b of the nozzle member 11 can be pressed against the upper end surface of the mouth portion 21 by engaging the tip of the nozzle member 11 from the outside.

  When the chemical solution in the chemical solution container 20 is discharged and used, first, the cap 30 is removed and the whole is inverted, and the plug 13c protruding from the tip of the nozzle member 11 is pressed against the affected part such as the skin to push the member 13 Is pushed into the nozzle member 11 (in the direction of the arrow in FIG. 2). Therefore, when the push member 13 is pushed, the push member 13 moves in the axial direction, and elastically contracts the sponge body 12 in the axial direction via the outer flange 13d (two-dot chain line in the figure). On the other hand, since the chemical solution is uniformly impregnated and held in advance in the sponge body 12 through the through holes 14c, 14c of the receiving member 14, when the sponge body 12 is elastically contracted, the chemical solution in the sponge body 12 is absorbed. It is discharged into the pressing member 13, flows down to the plug 13c side through the windows 13e, 13e... And is discharged to the outside through the spout 11d.

  However, the spout 11d is opened when the inclined surface 13g on the push member 13 side is separated from the inclined surface 11g on the nozzle member 11 side, and the chemical liquid flowing down along the spout portion 13c is formed on the inner surface of the spout 11d. It can be smoothly discharged to the outside through the outflow passages R, R. Therefore, the drug solution container 20 may be moved back and forth and left and right while the tip of the plug 13c is in contact with the diseased part, and the discharged drug solution may be spread over the diseased part.

  The amount of the chemical discharged every time the pressing member 13 is pushed depends on the elastic shrinkage of the sponge body 12 as long as the chemical is uniformly held in the sponge body 12, and the length of the pushing operation is shortened. Regardless, it can be controlled to a substantially constant amount. In addition, when repeating pushing operation, the time interval required to make the sponge body 12 impregnate a chemical | medical solution uniformly shall be set for every pushing operation.

  The amount of the chemical discharged every time the pressing member 13 is pushed is affected by the material and physical properties of the sponge body 12 (for example, FIG. 6). However, Examples 1 and 2 in FIG. 6 are polyether-based flexible urethane foams, and Comparative Examples 1 and 2 are polyester-based flexible urethane foams. In addition, as in Patent Document 1, the reference example is a valve-type inner plug that does not use the sponge body 12 and incorporates a spring.

  The sponge bodies 12 of Examples 1 and 2 and Comparative Examples 1 and 2 were both free in an outer diameter of 10 mm and a length of 10 mm, and were elastically contracted by 4 mm in the axial direction. Disinfecting alcohol was used as a reagent solution, the number of repetitions of the pressing operation was 10 times, and the time interval for each pressing operation was about 1 second regardless of the pressing operation time. For various materials and physical properties of the sponge body 12, the average amount of discharged chemical liquid per push operation for push operations of 2 seconds and 10 seconds μ2, μ10, and the variation σ2 of the discharge solution amount per push operation for 2 seconds of push operation are evaluated As a result of the screening experiment, the sponge body 12 discharges a constant amount of chemical solution for each pushing operation regardless of the length of the pushing operation time, and the variation becomes small. Ether-based flexible urethane foam was the best.

  In addition, this invention is applicable not only to an athlete's foot drug but to an anti-inflammatory analgesic.

Overall configuration diagram Fig. 1 is an enlarged view of the main part Main part enlarged exploded perspective view Configuration diagram of the push member Top view of FIG. Chart showing evaluation data

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Nozzle member 11d ... Spout 12 ... Sponge body 13 ... Pushing member 13a ... Main-body part 13b ... Cylindrical part 13c ... Plug part 13d ... Outer flange 13e ... Window 13f ... Groove 14 ... Receiving member 20 ... Chemical solution container 21 ... Mouth

Patent applicant Shingo Chemical Co., Ltd.
Attorney Tadaaki Matsuda, Attorney

Claims (4)

  A nozzle member that is attached to the mouth of the chemical container and has a spout at the tip, a sponge body of an elastic material that is housed in the nozzle member through a receiving member, and an interior of the nozzle member that is positioned on the sponge body A pushing member that pushes a plug portion protruding from the tip of the nozzle member through the spout to elastically contract the sponge body, thereby An internal stopper for a chemical solution container, wherein the chemical solution retained inside is discharged from the spout.   The said pushing member integrally molds the main-body part which has an outer flange in a lower end, the cylindrical part with a window on this main-body part, and the said plug part on this cylindrical part. The inner stopper of the chemical container.   The middle plug of the chemical solution container according to claim 1 or 2, wherein the spigot part is formed with an axial groove on the peripheral surface.   The inside plug of the chemical solution container according to any one of claims 1 to 3, wherein the sponge body is made of a polyether-based flexible urethane foam having 25 to 45 cells / 25 mm.

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