JPH09187681A - Shower head with chemical slow discharging function and chemical slow discharge cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize slow discharge of a chemical into flowing water by being communicated a rigid material container filled a water soluble chemical and a chemical slow discharge cartridge having a porous membrane covering the opening with a flow path of a shower head and attaching them. SOLUTION: Since an opening end of the chemical slow discharge cartridge 5 is covered with the porous membrane 5b in the shower head 1, a portion of city water flowing into a swelled diameter portion 3b2 of the flow path 3 gradually flows into the chemical slow discharge cartridge 5. Thus, the flows of both ity water and an ascorbic acid saturated liquid are stabilized and since air changing the volume with a deviation of pressure is not present in the chemical slow discharge cartridge 5 and the cartridge is made with a rigid material and is not deformed with a difference between the internal pressure and outside pressure, the flows of both city water and the ascorbic acid saturated solution in the chemical slow discharge cartridge 5 are stabilized. The ascorbic acid saturated solution is slowly discharged into the city water flowing into an annular flow path 2d without being discharged in excess during the use of a shower.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shower head with a sustained drug release function and a sustained drug release cartridge. The shower head in the present invention is a concept including not only a shower head for bathing but also a water discharging nozzle for cleaning equipment, a water discharging nozzle for car washing and the like.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication Nos.
No. 296902 discloses a shower head with a drug sustained release function having the following structure. A cartridge filled with a water-soluble drug having an opening also serving as an inflow port and an outflow port is mounted outside the shower head, and the opening of the cartridge is formed through an opening formed in an enclosure of the shower head, thereby forming a flow path inside the shower head. (Japanese Unexamined Patent Application Publication No. 5-293053, FIGS. 4, 7,
8). A cartridge filled with a water-soluble drug having an opening also serving as an inlet and an outlet fits into an opening formed in the enclosure of the shower head, and the opening of the cartridge communicates with a flow path inside the shower head ( JP-A-5-29305
No. 3 Figures 5 and 6). A cylindrical container open at both ends containing a cylindrical cartridge having one end closed and an opening serving as an inlet and outlet at the center of the other end is connected to the inlet of the shower head. The cartridge is filled with a water-soluble drug. An annular flow path is formed between the side wall of the cartridge and the side wall of the cylindrical container, and the cartridge is disposed in the cylindrical container with the opening also serving as the inlet / outlet facing upstream. JP-A-5-293053, FIG. 9). A cartridge filled with a water-soluble drug having an inflow port and an outflow port is mounted on a shower head, and the inflow port and the outflow port of the cartridge communicate with a flow path inside the shower head (see Japanese Patent Application Laid-Open No. Hei 5 (1993) -209). Fig. 1
2, 13, 14, JP-A-6-296902, FIG.
2, 3).

[0003] In the above shower head with the drug sustained release function, the water flowing through the flow path inside the shower head flows into the cartridge through the opening also serving as the inflow port and the outflow port, and the water-soluble water filled in the cartridge is filled. Is gradually dissolved, and the drug is gradually released into running water through an opening also serving as an inflow port and an outflow port. In the above shower head with a drug sustained release function, water flowing in the cylindrical container flows into the cartridge through the opening also serving as the inflow port and the outflow port, and gradually dissolves the water-soluble drug filled in the cartridge. The drug is slowly released into running water through an opening that also serves as an inlet and an outlet. In the shower head with a drug release function described above, water flowing through the flow path inside the shower head flows into the cartridge through the inflow port, gradually dissolves the water-soluble drug filled in the cartridge, and flows out of the outflow port. , The drug is slowly released into running water.

[0004]

In the shower head with a sustained drug release function described above, the air mixed in the cartridge expands and contracts due to the pressure fluctuation inside the cartridge due to the start and stop of use of the shower, There is a problem that the drug in the cartridge may be excessively released. Further, when the cartridge is formed of a soft material, the cartridge expands and contracts due to pressure fluctuation inside the cartridge due to the start and stop of use of the shower, or the user is mounted outside the shower head. There is a problem that the cartridge contracts by applying pressure to the cartridge, and the medicine in the cartridge may be excessively released. The present invention has been made in view of the above problems, and there is no risk of excessive release of the drug from the cartridge filled with the drug into the running water during use of the shower, and the stability of the drug in the running water is maintained. An object of the present invention is to provide a shower head with a sustained drug release function, which guarantees the sustained release. Another object of the present invention is to provide a drug sustained release cartridge capable of stably and slowly releasing a drug into running water. It is another object of the present invention to provide a drug sustained release method for stably and slowly releasing a drug into running water.

[0005]

In order to solve the above-mentioned problems, in the present invention, a water-soluble liquid drug or a hard drug not containing an air layer filled with a water-soluble drug and a saturated aqueous solution of the drug is used. A material sustained release cartridge having a material container, a single opening formed in the hard material container, and a porous film covering the opening, and a shower head, wherein the drug sustained release cartridge has the opening of the shower head. Provided is a shower head with a sustained drug release function, which is mounted on a shower head in a state of communicating with a flow path. In the shower head with a sustained drug release function according to the present invention, water enters the sustained drug release cartridge from the flow path of the shower head through the single opening formed in the sustained drug release cartridge to allow the sustained drug release. The water-soluble liquid drug or a saturated aqueous solution of the water-soluble drug in the discharge cartridge is discharged into the flow path of the shower head through the single opening. The opening of the drug sustained-release cartridge is covered with a porous film, and there is no air whose volume changes due to pressure fluctuation inside the drug sustained-release cartridge.The drug sustained-release cartridge is made of a hard material and is subjected to external pressure. Therefore, the water-soluble liquid drug or a saturated aqueous solution of the water-soluble drug in the drug sustained-release cartridge does not become excessively released during the use of the shower and the water flowing in the flow path of the shower head is stable. Is gradually released.

[0006] In a preferred embodiment of the present invention, the drug sustained-release cartridge is a cylinder having one end closed and the other end opened, and the drug sustained-release cartridge of the shower head has an open end of the cylinder facing upstream. It is arranged in the flow channel, and there is a gap between the drug sustained release cartridge and the flow channel wall. A drug sustained-release cartridge consisting of a cylinder whose one end is closed and the other end is opened is disposed in the flow path of the shower head with the open end of the cylinder facing upstream, and the drug sustained-release cartridge and the flow path wall. In the case of forming a gap between and, the drug sustained release cartridge is protected by the shower head, and an accident such as damage of the drug sustained release cartridge by external force is prevented.

In a preferred embodiment of the present invention, the sustained drug release cartridge is mounted on the outside of the shower head. When the drug sustained release cartridge is mounted on the outside of the shower head, replacement of the drug sustained release cartridge becomes easy.

In a preferred aspect of the present invention, the showerhead includes an openable / closable lid member that abuts the porous membrane of the sustained drug release cartridge from the outside of the sustained drug release cartridge. When the shower head includes an openable / closable lid member that comes into contact with the porous membrane of the sustained drug release cartridge from the outside of the sustained drug release cartridge, the shower head user opens and closes the lid member to remove the drug. A water shower containing water and a water shower containing no drug can be used as needed.

In a preferred embodiment of the present invention, the opening area of the drug sustained-release cartridge is about the same as the flow passage area of the shower head near the opening. When the opening area of the drug sustained release cartridge is set to be approximately the same as the flow channel area of the shower head in the vicinity of the opening, the opening is sufficiently wide. The portion through which the water flowing in flows through does not overlap with the portion through which the liquid water-soluble drug or a saturated aqueous solution of the water-soluble drug discharged from the drug sustained-release cartridge to the flow path of the showerhead passes. As a result, the liquid flow in the drug sustained-release cartridge is stabilized, and the water-soluble liquid drug or the saturated aqueous solution of the water-soluble drug in the drug sustained-release cartridge is stably and slowly released.

In a preferred embodiment of the present invention, the open end of the tubular body of the drug sustained release cartridge is formed at an angle of 30 ° to 90 ° with respect to the axis of the tubular body. When the open end of the barrel of the drug sustained release cartridge is formed at an angle of 30 ° to 90 ° with respect to the axis of the barrel, when the shower discharge amount increases, the drug sustained release cartridge. The amount of the sustained release of the drug from the water increases and the concentration of the drug in the discharged water increases. As a result, when the discharge amount of the shower is increased, the concentration of the drug in the discharged water is reduced, and the situation in which the effect of the drug is reduced is prevented. In a preferred aspect of the present invention, the showerhead with a sustained drug release function includes a water amount adjusting device that adjusts the amount of water flowing into the sustained drug release cartridge from the flow path of the showerhead. When a water amount adjusting device for adjusting the amount of water flowing into the medicine sustained-release cartridge from the flow path of the shower head is provided, the sustained-release amount of the medicine can be adjusted.

In a preferred embodiment of the present invention, the shower head with sustained drug release function comprises a drug leakage prevention device for preventing leakage of drug from the sustained drug release cartridge when the shower is not used. When a drug leakage prevention device is installed to prevent the drug from leaking from the drug sustained release cartridge when the shower is not used, the drug will elute into the residual water in the shower head when the shower is not used and It is possible to prevent the occurrence of a situation in which is exhausted.

In the present invention, a hard material container containing no water layer filled with a water-soluble liquid drug or a water-soluble drug and a saturated aqueous solution of the drug, and a single hard material container formed in the hard material container Provided is a drug sustained-release cartridge comprising an opening and a porous film covering the opening. When the opening of the drug sustained-release cartridge according to the present invention is placed in running water, water enters the cartridge through the opening, and the water-soluble liquid drug in the cartridge or a saturated aqueous solution of the water-soluble drug is It is discharged into running water through the opening. The single opening formed in the cartridge is covered with a porous film, there is no air whose volume changes due to pressure fluctuations inside the cartridge, and the cartridge is made of a hard material and does not deform even when external pressure is applied. Therefore, the water-soluble liquid drug or the saturated aqueous solution of the water-soluble drug in the cartridge is stably and gradually released into running water without being excessively released.

In a preferred embodiment of the present invention, the hard material container of the drug sustained release cartridge is a cylindrical body having one end closed and the other end open. When the hard material container of the drug sustained release cartridge is composed of a tubular body with one end closed and the other end open, a pipe that forms the flow path of the drug sustained release cartridge with the open end of the tubular body facing upstream. Easy to insert in the road.

In a preferred embodiment of the present invention, the hard material container of the drug sustained-release cartridge is a cylinder having one end closed and the other end opened, and the open end of the cylinder is 30 with respect to the axis of the cylinder. It is formed at an angle of 90 ° to 90 °.
The hard material container of the drug sustained-release cartridge is a cylinder whose one end is closed and the other end is open, and the open end of the cylinder forms an angle of 30 ° to 90 ° with the axis of the cylinder. In this case, when the drug sustained release cartridge is arranged in the pipe line with the open end of the tubular body facing upstream, the drug sustained release cartridge from the drug sustained release cartridge increases in accordance with the increase in the flow rate of the flowing water in the pipe line. The sustained release amount of the drug is increased, and the increase of the flow rate of the flowing water prevents the concentration of the drug in the flowing water from decreasing.

In a preferred aspect of the present invention, a drug input opening is formed in the hard material container, and the drug input opening is closed by a removable lid. When the drug input opening is formed in the hard material container and the drug input opening is closed by the removable lid, the hard container is replenished with the drug, and after the refill, the drug input opening is opened by the removable lid. By closing, the drug sustained release cartridge can be reused repeatedly.

In the present invention, the opening of the above-mentioned drug sustained release cartridge is placed in running water, a pressure distribution is generated on the surface of the porous film covering the opening, and the drug is discharged from the peripheral portion of the porous film at a low pressure. Provided is a method for sustained-release of a drug, which comprises sustained-release in running water. When the opening of the above-mentioned sustained-release cartridge for medicine is placed in running water, the outer surface of the porous membrane covering the opening,
A pressure distribution is generated in which the central part has a high pressure and the peripheral part has a low pressure. As a result, water penetrates into the drug sustained-release cartridge from the central portion of the high-pressure porous film, and the drug in the drug sustained-release cartridge is gradually released from the peripheral portion of the low-pressure porous film into the running water.

In a preferred embodiment of the present invention, the drug sustained-release cartridge is disposed in a pipe forming a flow path with its opening facing the upstream side, and the drug is gradually released into running water. When the drug sustained-release cartridge is arranged in the conduit forming the flow path with the opening facing the upstream side, the drug sustained-release cartridge is protected by the conduit, and the drug sustained-release cartridge is damaged by external force. The occurrence of accidents is prevented.

In a preferred embodiment of the present invention, the drug sustained-release cartridge is mounted on the outside of the conduit forming the flow path, and the vicinity of the opening is inserted into the conduit by penetrating the wall surrounding the conduit to open the opening. Place in running water and release the drug slowly into the running water. When a drug sustained release cartridge is mounted on the outside of the conduit that forms the flow path and the vicinity of the opening penetrates the conduit wall and is inserted into the conduit and the opening is placed in running water, the drug sustained release cartridge is released. Easy to replace cartridge.

In a preferred embodiment of the present invention, the area, pore diameter, film thickness, material, pore density and the like of the porous membrane are appropriately selected to control the sustained release amount of the drug into running water. By appropriately selecting the area, pore diameter, film thickness, material, pore density, etc. of the porous membrane to control the sustained release amount of the drug into the running water, the drug concentration in the running water can be adjusted according to the purpose, running water amount, etc. It can be adjusted appropriately.

In a preferred embodiment of the present invention, a lid member that comes into contact with the porous membrane of the sustained drug release cartridge is opened and closed from the outside of the sustained drug release cartridge to control the sustained release of the drug into running water and to stop the sustained release of the drug. To do. The sustained release of the drug is required by opening and closing the lid member that comes into contact with the porous film of the sustained drug release cartridge from the outside of the sustained drug release cartridge to perform the sustained release of the drug into the running water and the sustained release of the drug. Only in this case, the drug can be released slowly, and the drug sustained release cartridge can be prevented from being consumed due to unnecessary drug release.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION A shower head for a bath with a sustained drug release function according to an embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, a shower head 1 for bath with a sustained drug release function.
Has a discharge port 2a formed of a perforated plate at the downstream end, a threaded portion 2b formed at the upstream end, and a flow passage 2c extending from the upstream end to the downstream end formed inside. It includes a portion 2 and a second portion 3 formed of a tubular body in which a threaded portion 3a is formed at the downstream end and a flow path 3b extending from the upstream end to the downstream end is formed inside. Flow passage 3b of the second part 3 includes a small diameter portion 3b ₁ extending from the upstream end, connected to the small diameter portion 3b _1, it is constituted by the enlarged diameter portion 3b ₂ extending in a funnel shape toward the downstream end. A water drain valve 4 is attached to the second portion 3. The second portion 3 is the screw portion 3.
The a is screwed into the threaded portion 2b of the first portion 2 and is connected to the first portion 2. The upstream end of the second portion 3 is connected to the water supply hose 100.

The drug sustained release cartridge 5 is inserted in the flow path 2c of the first portion 2. Drug sustained release cartridge 5
Is a container made of a hard material such as acrylic resin, more specifically, a right cylindrical body 5a having one end closed and the other end completely open.
And a porous film 5b that covers the open end of the right cylindrical body 5a. The opening area of the open end of the straight cylindrical body 5a is
The flow path area of the flow path 3b ₂ near the open end is set to a value approximately the same as the flow path area. A plurality of protrusions 5 are provided on the outer surface of the right cylindrical body 5a.
c is formed. The drug sustained-release cartridge 5 is filled with ascorbic acid powder and an ascorbic acid saturated aqueous solution, and there is no compressible air in the drug sustained-release cartridge 5. In the manufacturing process of the drug sustained-release cartridge 5, deaerated pure water is used, and the open end of the straight cylindrical body 5a is covered with the porous film 5b while preventing air from being mixed. Air can be completely eliminated. The drug sustained release cartridge 5 is
The open end covered with the porous membrane 5b is positioned in the enlarged diameter portion 3b ₂ of the flow path of the second portion 3 toward the upstream side, and the protrusion 5
It is inserted into the flow path 2c of the first portion 2 in a state in which c is brought into contact with the inner surface of the cylindrical body forming the first portion 2. An annular flow path 2d is formed around the drug sustained release cartridge 5.

The operation of the shower head 1 for bath with a sustained drug release function will be described. Tap water is supplied from the water supply hose 100 to the shower head 1 for bath with a sustained drug release function. As shown by the solid line arrow in FIG. 1, the enlarged diameter portion 3b ₂ of the flow path of the second portion 3
A part of the tap water flowing through flows into the annular flow path 2d, and another part flows into the drug sustained-release cartridge 5 through the central portion of the open end of the straight cylindrical body 5a. Drug sustained release cartridge 5
The tap water that has flowed in is diffused in the radial direction while advancing through the central portion of the straight cylindrical body 5a toward the closed end, changing the flow direction, as shown by the broken line arrow in FIG. The flow becomes a cylindrical shape along the surrounding wall of, and advances toward the open end of the straight cylindrical body 5a. Ascorbic acid dissolves in tap water,
Tap water becomes a saturated aqueous solution of ascorbic acid. The saturated ascorbic acid aqueous solution flows out of the medicine sustained release cartridge 5 from the peripheral edge of the open end of the straight cylindrical body 5a and mixes with the tap water flowing into the annular flow path 2d. Ascorbic acid mixed in tap water removes residual chlorine in tap water. By discharging the tap water from which the chlorine odor has been removed from the shower head 1, the comfort of the shower user is increased.

In the shower head 1 for bath with sustained drug release function, the open end of the sustained drug release cartridge 5 is the porous film 5.
Since it is covered with b, a part of the tap water flowing through the enlarged diameter portion 3b ₂ of the flow path of the second portion 3 gradually flows into the drug sustained release cartridge 5. As a result, the flow of tap water and the saturated ascorbic acid aqueous solution in the drug sustained-release cartridge 5 is stabilized. Since there is no air whose volume changes due to pressure fluctuation in the drug sustained release cartridge 5, the flows of tap water and ascorbic acid saturated aqueous solution in the drug sustained release cartridge 5 are stable. Since the drug sustained-release cartridge 5 is made of a hard material and does not deform due to the difference in internal and external pressures, the flow of tap water and the saturated ascorbic acid aqueous solution in the drug sustained-release cartridge 5 is stable. As a result, the saturated aqueous ascorbic acid solution in the drug sustained-release cartridge 5 is stably released into the tap water flowing into the annular flow path 2d without being excessively released during the use of the shower.

Since the medicine sustained release cartridge 5 is a cylindrical body having one end closed and the other end opened, it can be easily inserted into the channel 2c of the shower head 1 for bath with a medicine sustained release function. In the shower head 1 for bath with a sustained drug release function, since the sustained drug release cartridge 5 is arranged in the flow path 2c of the shower head 1, the sustained drug release cartridge 5 is protected by the shower head 1 and the external force causes the drug. Accidents such as breakage of the sustained release cartridge 5 are prevented.

In the shower head 1 for bath with sustained drug release function, the opening area of the open end of the sustained drug release cartridge 5 is set to a value approximately the same as the flow path area of the flow path 3b ₂ near the opening. Since the opening is sufficiently wide, the portion through which the water flowing into the drug sustained release cartridge 5 from the channel 3b ₂ in the opening passes, and the channel 3 from the drug sustained release cartridge 5 are passed.
The portion through which the saturated ascorbic acid aqueous solution released to b ₂ passes does not overlap. As a result, the flow of the liquid in the drug sustained release cartridge 5 is stabilized, and the drug sustained release cartridge 5 is
The saturated aqueous solution of ascorbic acid therein is released slowly and stably.

In the shower head 1 for a bath with a sustained drug release function, a straight cylindrical body 5 constituting a sustained drug release cartridge 5 is formed.
The open end of a is the funnel-shaped expanded portion 3b of the flow path of the second portion 3.
Since it is located inside ₂ , the cross-sectional area of the annular flow path around the open end of the straight cylindrical body 5a is adjusted by adjusting the screwing angle of the first portion 2 and the second portion 3 to make it porous. The amount of tap water flowing into the drug sustained-release cartridge 5 can be adjusted by adjusting the pressure applied to the outer surface of the membrane 5b. Thereby, the sustained release amount of the saturated ascorbic acid aqueous solution can be controlled.

In the shower head 1 for bath with a sustained drug release function, the water drain valve 4, which is closed by the water pressure in the shower head during use of the shower, is opened after the shower is used and flows through the water drain valve 4. Roads 2c, 2d, 3b ₂ ,
The water in 3b ₁ can be discharged to the outside. As a result, it is possible to prevent the situation in which ascorbic acid is eluted into the residual water in the shower head 1 when the shower is not used and the ascorbic acid in the drug sustained-release cartridge 5 is exhausted early.

Using a general-purpose fluid analysis program by the difference method, the fluid flow in the shower head was analyzed under the following conditions. Fluid: H ₂ O (density ρ = 992.3 Kg / m ³ , kinematic viscosity coefficient ν =
0.667 × 10 ^-6 m ² / sec) Flow rate: 0.167 × 10 ^-3 m ³ / sec Resistance due to porous membrane: 5.5 × 10 ^-3 m / sec (at △
p = 9.8 × 10 ² Pa) Analysis condition: No slip condition Drug sustained release cartridge outer diameter: 18mm Drug sustained release cartridge inner diameter: 16mm Drug sustained release cartridge length: 100mm Shower head inner diameter: 22mm Shower head length: 300mm Drug sustained release cartridge Arrangement position: The open end was arranged at the central portion in the length direction of the shower head, coaxially with the shower head, with the open end facing the upstream side.

FIG. 2 shows the contour lines and the velocity vector distribution of the hydraulic pressure distribution of the fluid in the vicinity of the open end of the drug sustained-release cartridge 20 seconds after the start of water flow obtained by the analysis. From FIG. 2, in the central part of the open end of the drug sustained release cartridge, the water pressure applied to the outer surface of the porous membrane is the same as the water pressure applied to the inner surface of the porous membrane.
That is, the water pressure applied to the outer surface of the porous membrane is smaller than the water pressure applied to the inner surface of the porous membrane at the peripheral portion of the open end of the drug sustained release cartridge. At the center of the open end of the sustained-release cartridge, water flows from the showerhead channel into the drug sustained-release cartridge, and at the peripheral edge of the open-end of the sustained-release cartridge, water flows from the sustained-release cartridge to the showerhead channel. Is confirmed to be leaked.

At a position 2 mm away from the inner surface of the porous membrane of the drug sustained release cartridge to the inside of the drug sustained release cartridge,
And 0.2 in the radial direction from the center line of the drug sustained release cartridge.
Position 5 mm apart (A), position 2.75 mm apart (B), position 5.25 mm apart (C), 7.75 mm
FIG. 3 shows the change over time of the axial velocity component of the fluid (the downstream direction is positive and the upstream direction is negative) at the distant position (D). It can be seen from FIG. 3 that the flow of water flowing into the drug sustained release cartridge and the flow of water flowing out of the drug sustained release cartridge reach a steady state within a short time after the start of water flow, that is, from the drug sustained release cartridge. Is confirmed to be stable and sustained release.

An experiment for measuring the residual chlorine removing ability in tap water was carried out by using the shower head 1 for bath with a sustained drug release function shown in FIG. The inner diameter of the gripping portion of the shower head 1 for bath with sustained drug release function, that is, the outer diameter of the annular flow path 2d is 24 mm, and the outer diameter x inner diameter x length of the right cylindrical body 5a constituting the sustained drug release cartridge 5 is 20 mm x It was set to 16 mm × 120 mm. As the porous membrane 5b covering the open end of the right cylindrical body 5a, a porous membrane having a pore diameter of 10 μm, which is obtained by coating polyester fiber with a cellulose acetate resin, is used, and a nominal fiber diameter of 2 μm is used.
m, a sandwich of woven fabrics of ultrafine polyester fibers having a nominal pore diameter of 4.3 to 4.7 μm was used. The drug sustained-release cartridge 5 was filled with 20 g of ascorbic acid powder and further filled with deaerated pure water to completely remove air from the drug sustained-release cartridge 5. In the shower head 1 for a bath with a sustained drug release function, tap water at 40 ° C. containing residual chlorine at a concentration of 1.5 mg / dm ³ or more was passed at a flow rate of 10 dm.
^The water pressure was 0.4 kgf / cm ² at a flow rate of ³ / min for 20 minutes per day, that is, 200 dm ^{3 was} passed. After the water supply was stopped, residual water in the shower head 1 was discharged through the water drain valve 4 and left for 24 hours or more. After that, with the above water flow,
The release of residual water and the standing were repeated. After passing water for 20 minutes, 1 minute, 5 minutes, 10 minutes, and 20 minutes after the start of water passage,
Residual chlorine removal capacity of the shower head 1 for bath with chemical release function (residual chlorine concentration of tap water supplied to the shower head 1 for bath with chemical release function and water discharged from the shower head 1 for bath with chemical release function) The difference between the residual chlorine concentration and the residual chlorine concentration was measured. The measurement result is shown in FIG. From Figure 4, approximately 1 mg
It can be seen that the residual chlorine removal capacity of / dm ³ is stably maintained in each water passage and is stably maintained for a long period of time.

A drug sustained-release cartridge filled with ascorbic acid having an inflow port and an outflow port is mounted on a shower head, and the inflow port and the outflow port of the drug sustained-release cartridge communicate with a flow path inside the shower head. Using the commercially available shower head with sustained drug release function corresponding to FIG. 2 of JP-A-6-296902, a measurement experiment of residual chlorine removal ability in tap water was conducted. In the shower head with a sustained chemical release function, tap water containing residual chlorine at a concentration of 1.5 mg / dm ³ or more at 40 ° C was used, and the water flow rate was 10 dm ³ / min, and the water pressure during water flow was 0.4 kgf / cm ^2. Then, 20 minutes per day, that is, 200 dm ^{3 of} water was passed. After the water flow was stopped, it was left for 24 hours or more. After that, the above water flow and standing were repeated. The residual chlorine removing ability of the shower head with the sustained drug release function was measured at the time of 5 minutes, 10 minutes, and 20 minutes after the start of water passage in water passage for 20 minutes. The measurement result is shown in FIG. From FIG. 5, in the commercially available shower head with sustained drug release function corresponding to FIG. 2 of JP-A-6-296902, in each water passage,
Ascorbic acid was excessively eluted immediately after the start of water flow, and the amount of ascorbic acid eluted was drastically decreased with the passage of water, that is, stable sustained release of ascorbic acid cannot be expected. . In the commercially available showerhead with a sustained drug release function, ascorbic acid is excessively eluted, so that the ascorbic acid in the sustained drug release cartridge is heavily consumed, and the life of the sustained drug release cartridge is short.

An experiment for measuring the residual chlorine removing ability in tap water was conducted using the shower head 1 for bath with a controlled drug release function shown in FIG. The inner diameter of the grip portion of the shower head 1 for bath with a sustained drug release function, that is, the outer diameter of the annular flow path 2d is set to 24 mm, and the outer diameter of the right cylindrical body 5a constituting the sustained drug release cartridge 5 x
Inner diameter × length was set to 20 mm × 16 mm × 120 mm.
As shown in FIGS. 6A, 6C, and 6D, the right cylindrical body 5
The angle of the open end of a with respect to the axis of the right cylindrical body 5a was changed variously, and the influence of the angle on the residual chlorine removing ability of the shower head 1 for bath with a sustained drug release function was examined. When the open end of the straight cylindrical body 5a is directed to the downstream side as shown in FIG. 6 (b), the straight cylindrical body 5a is shown as shown in FIG. 6 (e).
The experiment for measuring the residual chlorine removal capacity in tap water was also conducted when both ends of the water were closed and an opening was provided at the center in the extending direction. In FIGS. 6A to 6D, as the porous membrane 5b covering the open end of the right cylindrical body 5a, the nominal fiber diameter is 2 μm,
A woven fabric of ultrafine polyester fibers having a nominal pore diameter of 4.3 to 4.7 μm was used. The opening in Fig. 6 (e) also has a nominal fiber diameter of 2μ.
m, and the cloth was covered with a woven fabric of ultrafine polyester fibers having a nominal pore diameter of 4.3 to 4.7 μm. In the shower head 1 for bath with a sustained drug release function, tap water containing residual chlorine at a concentration of 1.5 mg / dm ³ or more at 10 ° C. to 14 ° C. was used and the water pressure during water passage was 0.4.
Water was passed at various flow rates of kgf / cm ² , and the residual chlorine removing ability of the shower head 1 for bath with a controlled chemical release function was measured.

The measurement results are shown in FIG. From FIG. 7, when the angle of the open end of the straight cylindrical body 5a with respect to the axis of the straight cylindrical body 5a is 45 °, 60 °, or 90 °, the drug is gradually released as the discharge flow rate increases. The ability of the functional shower head 1 for removing residual chlorine to increase, that is,
It can be seen that the concentration of ascorbic acid in the discharged water increases. On the other hand, when the open end of the straight cylindrical body 5a is directed to the downstream side, it is found that ascorbic acid hardly elutes in the discharged water. When both ends of the straight cylindrical body 5a are closed and an opening is provided in the central portion in the extending direction, the ascorbic acid concentration in the discharged water increases as the discharge water flow rate increases, but the discharge water flow rate is 8 dm ^3. It can be seen that when the flow rate exceeds / minute, the ascorbic acid concentration in the discharged water decreases with an increase in the discharged water flow rate. Judging from FIG. 7, the open end of the straight cylindrical body 5a is directed to the upstream side, and the straight cylindrical body 5a at the open end of the straight cylindrical body 5a
When the angle of a with respect to the axis is 30 ° to 90 °, the sustained release amount of ascorbic acid from the right cylindrical body 5a increases and the ascorbic acid concentration in the discharged water increases with an increase in the discharge flow rate of the shower. it is conceivable that. That is, the open end of the straight cylindrical body 5a is directed to the upstream side, and the angle of the open end of the straight cylindrical body 5a with respect to the axis of the straight cylindrical body 5a is 30 ° to 30 °.
By setting the 90 °, typically in a comfortable range of 8dm ³ / min ~12dm ³ / min, which is a discharge flow rate, ascorbic acid concentration in the discharge water is reduced, water with chlorine odor is discharged from the showerhead It is thought that the occurrence of the situation will be prevented.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. The shower head with a sustained drug release function according to the present invention is not limited to a bath shower head. The shower head with a sustained drug release function according to the present invention also includes a water discharge nozzle for washing a device with a sustained drug release function, a water discharge nozzle for a car wash with a sustained drug release function, and the like. A cleaning agent such as a surfactant is filled in a water release nozzle for cleaning an appliance with a drug release function and a drug release cartridge attached to a water discharge nozzle for a car wash with a drug release function. As shown in FIG. 8, a small diameter portion 3b ₁ ′ having a smaller diameter than the annular flow passage 2d ′ around the drug sustained release cartridge 5 ′ extending from the upstream end of the flow passage 3b ′ of the second portion 3 ′ and a small diameter portion. It may be constituted by a large diameter portion 3b ₂ ′ having the same diameter as the annular flow path 2 d ′ around the drug sustained release cartridge 5 ′, which is connected to 3 b ₁ ′ and reaches the downstream end. With such a configuration, by adjusting 'and the second part 3' first section 2 a screwing angle of a, and 'a sustained drug release cartridge 5' smaller diameter portion smaller diameter portion 3b ₁ is closer spaced to the open end of The amount of tap water flowing into the drug sustained release cartridge 5'can be adjusted to control the sustained release amount of ascorbic acid. The cylinder forming the drug sustained release cartridge 5 is not limited to the right cylinder. May be curved along the shape of the shower head,
A cylindrical body having a cross section other than the circular shape may be used. The medicine filled in the medicine sustained-release cartridge 5 is not limited to ascorbic acid. Powdered, granular, liquid herbs, fragrances, bactericides, herbal medicines, emulsions, pH adjusters, detergents, surfactants and the like may be filled.

Instead of the water drain valve 4, a magnet valve shown in FIG. 9 may be used to prevent early exhaustion of ascorbic acid while the shower is not used. In the magnet valve of FIG. 9, a stainless steel O-ring 16 is fixed to the outside of the porous membrane 15b of the drug sustained release cartridge 15 arranged in the flow path 12 of the shower head 11. A pair of O-type magnets 1 is provided in the flow path 12 at a position upstream of the drug sustained release cartridge 15.
7a and 17b are arranged at a short interval in a state where the N pole and the N pole face each other or the S pole and the S pole face each other. The O-type magnet 17a on the downstream side is fixed to the surrounding wall of the flow path 12. A support plate 18 having a plurality of openings 18a is arranged at a position further upstream than the upstream O-type magnet 17b. The support plate 18 is fixed to the surrounding wall of the flow path 12. Shower head 11 having the magnet valve of FIG.
, The magnetic force causes O-
The ring 16 is in close contact with the O-type magnet 17a, and the O-type magnet 1
7b is pressed against the support plate 18. As a result, a small closed space 19 filled with water is formed between the O-type magnets 17a and 17b, which communicates with the internal space of the drug sustained release cartridge 15 through the porous membrane 15b. The saturated aqueous solution of ascorbic acid in the drug sustained-release cartridge 15 leaks into the closed space 19, but the closed space 19 is small, so the closed space 19 is immediately filled with the saturated aqueous solution of ascorbic acid. This prevents the subsequent leakage of the saturated aqueous solution of ascorbic acid from the drug sustained release cartridge 15.
When the use of the shower is started, water flows in the direction indicated by the white arrow in FIG. 9, and water pressure is applied to the O-type magnet 17b.
As a result, the O-type magnet 17b is supported by the support plate 18 against the magnetic force.
Away from the support plate 18, the opening 18a of the support plate 18 is opened, and then the water pressure is applied to the porous membrane 15b of the drug sustained release cartridge 15 to prevent the drug sustained release cartridge 15 from moving against the magnetic force.
-To move away from the magnet 17a. As a result, water flows through the flow path 12, and the saturated aqueous solution of ascorbic acid is gradually released from the drug sustained release cartridge 15 into the running water.

Instead of the water drain valve 4, a closing mechanism shown in FIG. 10 may be used to prevent early exhaustion of ascorbic acid while the shower is not used. In the closing mechanism of FIG. 10, a first flow path 22 having an oval cross section is formed in the shower head 21. The upstream end 22a of the first flow path 22 is obliquely closed. The first flow path 2 is provided near the upstream end of the first flow path 22.
A second flow path 23 having a groove-shaped cross section is formed continuously from No. 2. The second flow path 23 extends beyond the upstream end of the first flow path 22 and further upstream. A drug sustained release cartridge 25 having a circular cross section is arranged in the first flow path 22. The open end of the drug sustained release cartridge 25 is formed obliquely. The open end of the drug sustained release cartridge 25 is covered with a porous film 25b. A collar 25c having substantially the same shape as the second flow path 23 is formed near the open end of the drug sustained release cartridge 25. The collar 25c is fitted in the second flow path 23. A spring 26 is arranged between the downstream end of the second flow path and the collar 25c.
In the shower head 21 having the closing mechanism of FIG. 10, when the shower is not used, the elastic force of the spring 26 causes
The drug sustained release cartridge 25 has the upstream end 2 of the first flow path 22.
It is pressed against the closing wall of 2a. As a result, the open end of the sustained drug release cartridge 25 is closed, and leakage of a saturated aqueous solution of ascorbic acid from the sustained drug release cartridge 25 is prevented. When the use of the shower is started, water flows in the second flow path 23 in the direction indicated by the white arrow in FIG.
Water pressure is applied to the collar 25c. As a result, the drug sustained-release cartridge 25 moves in the downstream direction against the elastic force of the spring 26, and the open end of the drug sustained-release cartridge 25 moves to the first flow path 22.
Away from the closing wall at the upstream end 22a. As a result, water flows through the first flow path 22, and the saturated aqueous solution of ascorbic acid is gradually released from the medicine sustained release cartridge 25 into the running water.

A drug sustained-release cartridge filled with ascorbic acid powder and an ascorbic acid saturated aqueous solution may be mounted outside the shower head. The shower head 31 shown in FIG. 11 is made of a hard material such as acrylic resin which is filled with ascorbic acid powder and a saturated aqueous solution of ascorbic acid and has no compressible air inside, and has one end open and one open end. Is the porous film 35b
The drug sustained release cartridge 35 covered with is attached to the outside of the shower head 31. The portion near the open end of the drug sustained release cartridge 35 penetrates the surrounding wall of the shower head 31 and is inserted into the shower head 31, and the open end communicates with the flow path 32 of the shower head 31. The shower head 31 is provided with a tubular connecting fitting 36 facing the open end of the sustained drug release cartridge 35 so as to be movable in the axial direction.
It is screwed to. A shower hose (not shown) is connected to the tubular connection fitting 36. In the shower head 31 of FIG. 11, as indicated by the white arrow in FIG.
From the tubular connection fitting 36 to the flow path 32 of the shower head 31.
F Water flows in. A part of the inflowing water is part of the porous film 35b.
Through, and flows into the drug sustained release cartridge 35, and the ascorbic acid saturated aqueous solution is gradually released from the drug sustained release cartridge 35 into the running water in the flow path 32. Cylindrical connection fitting 36
The amount of sustained release of the saturated aqueous solution of ascorbic acid can be adjusted by moving A in the axial direction. Since the drug sustained-release cartridge 35 is attached to the outside of the shower head 31, the drug sustained-release cartridge 35 can be easily replaced.

As shown by the alternate long and short dash line in FIG. 11, a drug input opening 35d may be formed in the drug sustained release cartridge 35, and the drug input opening 35d may be closed by a removable lid 35e. The medicine input opening 35 is provided in the medicine sustained release cartridge 35.
The lid 3 in which d is formed and the medicine insertion opening 35d is detachable
When it is closed by 5e, the drug sustained-release cartridge 35 is replenished with the drug, and after the refilling, the drug injection opening 35d is closed by the removable lid 35e, whereby the drug sustained-release cartridge 35 can be reused repeatedly. .

As shown in FIG. 12, the shower head 31
In the inside of the swing door type or the double door type, which is abutted against the porous film 35b of the drug sustained release cartridge 35 from the outside of the drug sustained release cartridge 35 and is urged to swing in a direction of being pressed against the porous film 35b. The lid member 35f may be provided. When the drug sustained release cartridge 35 is pushed into the shower head 31, the lid member 35f swings and opens, as shown by the alternate long and short dash line in FIG. 12, and the porous membrane 35b comes into contact with the water flow to allow water to flow from the drug sustained release cartridge 35. The drug is gradually released inside. When the medicine sustained release cartridge 35 that has been pushed into the shower head 31 is slightly pulled out, the lid member 35f
Closes and contacts the porous membrane 35b, and the sustained release of the drug into the running water is stopped. The user of the shower head 31 adjusts the pushing amount of the medicine sustained release cartridge 35 into the shower head 31 and opens / closes the lid member 35f to shower the water containing the drug and the water not containing the drug. You can use and at any time. Since the drug can be released slowly only when the drug is required to be released, it is possible to prevent consumption of the drug sustained release cartridge 35 due to unnecessary drug release.

The drug sustained-release cartridge according to the above-described embodiment can be applied to a water supply device other than a shower head. The medicine sustained release cartridges 5 and 35 filled with reducing agents such as ascorbic acid, sodium ascorbate, calcium ascorbate, sodium sulfite, and calcium sulfite are attached to a vanity of a vanity, a bathroom, and a kitchen,
The reducing agent may be gradually released into tap water to reduce hypochlorous acid, which is a bactericide contained in tap water, into chloride ions. As a result, the odor of chlorine in tap water is removed, or damage to the skin or hair due to hypochlorous acid is prevented.

By appropriately selecting the film area, pore diameter, film thickness, material, pore density and the like of the porous membranes 5b, 15b, 25b and 35b, the drug release can be controlled depending on the purpose of sustained release of the drug, the flow rate of the water flow and the like. The release amount can be adjusted to a desired value, and the drug concentration in the running water can be adjusted to a desired value.

As shown in FIG. 13, an oral cavity cleaning device 41 having a small nozzle for discharging water linearly, a hair moisturizing device 42 having a small nozzle for ejecting mist, and a medicine sustained release cartridge 5 or 35 are attached. Controlled drug release device 43
May be connected. The drug sustained-release cartridge for the oral cavity cleaning device 41 is filled with a bactericidal agent, a cooling agent, a bad breath inhibitor, a fluorine compound, mineral salts such as salt and calcium glycerophosphate, and the drug sustained-release cartridge for the hair humidifying device 42. PH adjusters, moisturizers, rinses, hair restorers,
Hair treatment agents, cleaning agents such as shampoo, etc. are filled.

[0045]

As can be seen from the above description, in the shower head with the drug sustained release function according to the present invention, the drug sustained release is carried out from the flow path of the shower head through the single opening formed in the drug sustained release cartridge. Water enters the release cartridge, and the water-soluble liquid drug or a saturated aqueous solution of the water-soluble drug in the drug sustained-release cartridge is discharged to the flow path of the showerhead through the single opening. The opening of the drug sustained-release cartridge is covered with a porous film, and there is no air whose volume changes due to pressure fluctuation inside the drug sustained-release cartridge.The drug sustained-release cartridge is made of a hard material and is subjected to external pressure. Therefore, the water-soluble liquid drug or a saturated aqueous solution of the water-soluble drug in the drug sustained-release cartridge does not become excessively released during the use of the shower and the water flowing in the flow path of the shower head is stable. Is gradually released.

A drug sustained-release cartridge consisting of a cylindrical body having one end closed and the other end open is disposed in the flow path of the shower head with the open end facing upstream, and the drug sustained-release cartridge and the flow path wall are provided. In the case of forming a gap between and, the drug sustained release cartridge is protected by the shower head, and an accident such as damage of the drug sustained release cartridge by external force is prevented. When the drug sustained release cartridge is mounted outside the shower head, replacement of the drug sustained release cartridge becomes easy. When the shower head includes an openable / closable lid member that comes into contact with the porous membrane of the sustained drug release cartridge from the outside of the sustained drug release cartridge, the shower head user opens and closes the lid member to remove the drug. A water shower containing water and a water shower containing no drug can be used as needed. When the opening area of the drug sustained release cartridge is set to be approximately the same as the flow channel area of the shower head in the vicinity of the opening, the opening is sufficiently wide. A portion through which the hot water flowing into the passage and a portion through which the water-soluble drug of the liquid or a saturated aqueous solution of the water-soluble drug which is discharged from the drug sustained-release cartridge to the flow path of the shower head passes,
Do not overlap. As a result, the liquid flow in the drug sustained-release cartridge is stabilized, and the water-soluble liquid drug or the saturated aqueous solution of the water-soluble drug in the drug sustained-release cartridge is stably and slowly released. When the open end of the drug sustained-release cartridge is formed at an angle of 30 ° to 90 ° with respect to the axis of the cylinder, when the discharge amount of the shower is increased, the drug from the drug sustained-release cartridge is discharged. The amount of sustained release of the drug increases and the drug concentration in the discharged water increases. As a result, when the discharge amount of the shower is increased, the concentration of the drug in the discharged water is reduced, and the situation in which the effect of the drug is reduced is prevented. When a water amount adjusting device for adjusting the amount of water flowing into the medicine sustained-release cartridge from the flow path of the shower head is provided, the sustained-release amount of the medicine can be adjusted. When a drug leakage prevention device is installed to prevent the drug from leaking from the drug sustained release cartridge when the shower is not used, the drug will elute into the residual water in the shower head when the shower is not used and It is possible to prevent the occurrence of a situation in which is exhausted.

When the opening of the drug sustained-release cartridge according to the present invention is placed in running water, water penetrates into the cartridge through the opening, and the water-soluble liquid drug in the cartridge or a saturated aqueous solution of the water-soluble drug. Are discharged into the running water through the openings. The single opening formed in the cartridge is covered with a porous film, there is no air whose volume changes due to pressure fluctuations inside the cartridge, and the cartridge is made of a hard material and does not deform even when external pressure is applied. Therefore, the water-soluble liquid drug or the saturated aqueous solution of the water-soluble drug in the cartridge is stably and gradually released into running water without being excessively released. When the hard material container of the drug sustained release cartridge is composed of a tubular body with one end closed and the other end open, a pipe that forms the flow path of the drug sustained release cartridge with the open end of the tubular body facing upstream. Easy to insert in the road. The hard material container of the drug sustained-release cartridge is a cylinder whose one end is closed and the other end is open, and the open end of the cylinder forms an angle of 30 ° to 90 ° with the axis of the cylinder. In this case, when the drug sustained release cartridge is arranged in the pipe line with the open end of the tubular body facing upstream, the drug sustained release cartridge from the drug sustained release cartridge increases in accordance with the increase in the flow rate of the flowing water in the pipe line. The sustained release amount of the drug is increased, and the increase of the flow rate of the flowing water prevents the concentration of the drug in the flowing water from decreasing. When the drug input opening is formed in the hard material container and the drug input opening is closed by a removable lid, the hard container is replenished with the drug,
By closing the drug injection opening with a removable lid after replenishment, the drug sustained release cartridge can be reused repeatedly.

When the opening of the drug sustained-release cartridge is placed in running water, a pressure distribution is generated on the outer surface of the porous film covering the opening, with a high pressure in the central part and a low pressure in the peripheral part. As a result, water penetrates into the drug sustained-release cartridge from the central portion of the high-pressure porous film, and the drug in the drug sustained-release cartridge is gradually released from the peripheral portion of the low-pressure porous film into the running water. When the drug sustained-release cartridge is arranged in the conduit forming the flow path with the opening facing the upstream side, the drug sustained-release cartridge is protected by the conduit, and the drug sustained-release cartridge is damaged by external force. The occurrence of accidents is prevented. When a drug sustained release cartridge is mounted on the outside of the conduit that forms the flow path and the vicinity of the opening penetrates the conduit wall and is inserted into the conduit and the opening is placed in running water, the drug sustained release cartridge is released. Easy to replace cartridge. By appropriately selecting the area, pore diameter, film thickness, material, pore density, etc. of the porous membrane to control the sustained release amount of the drug into the running water, the drug concentration in the running water can be adjusted according to the purpose, running water amount, etc. It can be adjusted appropriately. The sustained release of the drug is required by opening and closing the lid member that comes into contact with the porous film of the sustained drug release cartridge from the outside of the sustained drug release cartridge to perform the sustained release of the drug into the running water and the sustained release of the drug. Only in this case, the drug can be released slowly, and the drug sustained release cartridge can be prevented from being consumed due to unnecessary drug release.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view of a shower head with a drug sustained release function according to an embodiment of the present invention.

FIG. 2 is obtained by a flow analysis of a fluid in a shower head using a general-purpose fluid analysis program by the difference method,
FIG. 6 is a diagram showing a pressure distribution and a flow velocity distribution of a fluid near the open end of the drug sustained release cartridge.

FIG. 3 is obtained by a flow analysis of a fluid in a shower head using a general-purpose fluid analysis program by the difference method,
It is a figure which shows the time-dependent change of the velocity of the fluid in the some radial direction position in the open end of a medicine sustained release cartridge.

FIG. 4 is a diagram showing the residual chlorine removing ability of a shower head with a sustained drug release function according to an example of the present invention.

FIG. 5 is a diagram showing a residual chlorine removing ability of a shower head with a sustained drug release function according to a conventional technique.

FIG. 6 is a vertical cross-sectional view of a drug sustained release cartridge showing various forms of the drug sustained release cartridge included in the shower head with a drug sustained release function according to an embodiment of the present invention.

FIG. 7 is a diagram showing the influence of the difference in the form of the drug sustained release cartridge on the residual chlorine removing ability of the shower head with the drug sustained release function.

FIG. 8 is a vertical cross-sectional view of a shower head showing a modified example of the shower head with sustained drug release function according to the embodiment of the present invention.

FIG. 9 is a view showing a modified example of the shower head with a drug sustained release function according to the embodiment of the present invention. (A) is a longitudinal cross-sectional view of the shower head, and (b) is a view taken along the line bb of (a).

FIG. 10 is a view showing a modified example of the shower head with a sustained drug release function according to the embodiment of the present invention. (A) is a longitudinal cross-sectional view of the shower head, (b) is a bb arrow view of (a), (c) is a cc arrow view of (a), (d) is (a). FIG.

FIG. 11 is a vertical cross-sectional view of a shower head showing a modified example of the shower head with a sustained drug release function according to the embodiment of the present invention.

FIG. 12 is a vertical cross-sectional view of a shower head showing a modified example of the shower head with a sustained drug release function according to the embodiment of the present invention.

FIG. 13 is a diagram showing an example in which the drug sustained-release cartridge according to the example of the present invention is applied to an oral cavity cleaning device and a hair moisturizing device.

[Explanation of symbols]

 1, 11, 21, 31 Showerhead with sustained drug release function 2 First part 3 Second part 4 Drain valve 5, 15, 25, 35 Sustained drug release cartridge 5b, 15b, 25b, 35b Porous membrane 16 O- Rings 17a, 17b O-type magnet 18 Support plate 19 Closed space 25c Tsuba 26 Spring 35d Drug injection opening 35e Lid 35f Lid member 36 Connection fitting 41 Oral cleaning device 42 Hair moisturizing device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoto Wajima 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City Totoki Kiki Co., Ltd. (72) Inventor Takuo Imasaka 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu No. 1 in Totoki Co., Ltd.

Claims (17)

[Claims] 1. A hard material container that does not include an air layer filled with a water-soluble liquid drug or a water-soluble drug and a saturated aqueous solution of the drug, and a single opening formed in the hard material container. A drug sustained release cartridge having a porous film covering the opening and a shower head are provided, and the drug sustained release cartridge is mounted on the shower head in a state where the opening is in communication with the flow path of the shower head. Shower head with a feature of sustained drug release. 2. The drug sustained-release cartridge is a tubular body having one end closed and the other end open, and the drug sustained-release cartridge is disposed in the flow path of the shower head with the open end of the tubular body facing upstream. The shower head with sustained drug release function according to claim 1, wherein there is a gap between the sustained drug release cartridge and the flow path wall. 3. The shower head with a sustained drug release function according to claim 1, wherein the sustained drug release cartridge is mounted on the outside of the shower head. 4. The drug sustained release according to claim 1, further comprising an openable / closable lid member that contacts the porous membrane of the drug sustained release cartridge from the outside of the drug sustained release cartridge. Shower head with release function. 5. The sustained drug release according to any one of claims 1 to 4, wherein the opening area of the sustained drug release cartridge is substantially the same as the flow passage area of the shower head near the opening. Shower head with function. 6. The drug release cartridge according to claim 2, wherein the open end of the cylinder is formed at an angle of 30 ° to 90 ° with respect to the axis of the cylinder. Shower head with drug release function. 7. The medicine sustained release function according to claim 1, further comprising a water amount adjusting device for adjusting an amount of water flowing into the medicine sustained release cartridge from the flow path of the shower head. shower head. 8. The sustained drug release according to claim 1, further comprising a drug leakage prevention device for preventing the drug from leaking from the drug sustained release cartridge when the shower is not used. Shower head with function. 9. A hard material container not containing an air layer filled with a water-soluble liquid drug or a water-soluble drug and a saturated aqueous solution of the drug, and a single opening formed in the hard material container, A drug sustained release cartridge comprising a porous film covering the opening. 10. The drug sustained-release cartridge according to claim 9, wherein the hard material container is a cylindrical body having one end closed and the other end open. 11. The sustained drug release cartridge according to claim 10, wherein the open end of the barrel is formed at an angle of 30 ° to 90 ° with respect to the axis of the barrel. 12. The drug sustained-release cartridge according to claim 9, wherein the hard material container is formed with a drug injection opening, and the drug injection opening is closed by a removable lid. 13. A porous medium having a low pressure, wherein an opening of the drug sustained-release cartridge according to any one of claims 9 to 12 is placed in running water to generate a pressure distribution on a surface of a porous membrane covering the opening. A method for sustained-release of a drug, which comprises slowly releasing the drug into running water from the peripheral portion of a membrane. 14. The medicine sustained-release cartridge is arranged in a pipe forming a flow passage with an opening facing the upstream side, and the medicine is gradually released into running water. Method of sustained drug release. 15. A drug sustained-release cartridge is attached to the outside of a conduit forming a flow path, the vicinity of the opening is inserted into the conduit through the conduit wall, and the opening is placed in running water. The method for controlling sustained release of a drug according to claim 13, wherein the agent is slowly released into running water. 16. The area, pore diameter, film thickness, material of the porous film,
16. The controlled release amount of a drug into running water is controlled by appropriately selecting the pore density and the like.
The method for gradually releasing a drug according to the item. 17. A sustained release of a drug into a running water and a sustained release stop are performed by opening and closing a lid member abutting the porous film of the drug sustained release cartridge from the outside of the drug sustained release cartridge. The method for gradually releasing a drug according to any one of claims 13 to 16.