JP2007167088A - Oral cavity washer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oral cavity washer capable of preventing unnecessary spouting or spattering of washing liquid, efficiently washing a region to be washed, feeding medical solution and massaging the region by securely spouting the washing liquid and the medical solution including an antibacterial agent, an anti-inflammatory, etc. to interdental regions or periodontal pockets, etc. without injuring the soft tissues in the oral cavity such as the periodontal pockets and gums. <P>SOLUTION: The oral cavity washer 1 has an elastic nozzle 4 at the distal end of a washing liquid spouting tube 3. The distal end of the elastic nozzle 4 is tapered in the cone-shape with 35-70° or preferably 40-50° vertex angle, and a spout 41 is bored at the tip of the cone-shaped distal end 43. The peripheral edge of the tip is rounded. The tip of the nozzle 4 securely fits the triangular part among adjacent teeth and the gum while closing the opening of the triangular part, so that food particles accumulated in the interdental part can be securely removed with the washing liquid with scattering little washing liquid, etc. In addition, the periodontal pocket can be washed by spouting the washing liquid, etc. into the periodontal pocket while the oral cavity washer 1 is securely pressed on the entrance of the periodontal pocket without the tip of the elastic nozzle 4 piercing the periodontal pocket. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an oral cleaning device, and more specifically, from the discharge port at the tip of the cleaning liquid discharge tube, between teeth, for example, a triangular portion between adjacent teeth and gums, a gingival margin at the boundary between teeth and gingiva, Discharge the cleaning liquid to the periodontal pockets between the teeth and gums to remove food residues remaining in the area, or remove antibacterial and anti-inflammatory drugs. The present invention relates to an oral irrigator for removing or suppressing plaque, suppressing tissue inflammation, etc., and massaging the gums of the gums.

  Conventionally, various types of oral cleaners (oral irrigators) have been proposed for cleaning interdental parts, gingival margins, periodontal pockets, etc. and gums on the gums (for example, patent documents). 1 to 3 etc.). These oral cleaners store the cleaning liquid in an elastic container container, and press the container container so that the discharge port at the tip of a nozzle (cleaning liquid discharge pipe) connected to the container container is connected to an interdental portion or a tooth. A high-speed jet water flow is intermittently discharged into the peripheral pocket to clean the interproximal part and periodontal pocket, clean and sterilize the gum part, and massage the gum on the gum part. In addition, a structure in which the cleaning liquid discharge pipe is connected to the tip opening of the syringe (for example, see Patent Document 4), or a container having a pump function mounted with the cleaning liquid discharge pipe (for example, Patent Documents 5 and 6). In addition, there has also been proposed a method in which air is mixed into the cleaning liquid and discharged together with the cleaning liquid (see, for example, Patent Document 7). Furthermore, oral irrigators with various structures have been proposed, such as those in which the washing liquid discharge pipe is attached to an electric artery kinetic pump or a manual pump, or those that are connected to a tap through a pipe or hose.

U.S. Patent No. 1961489 US Pat. No. 3,199,510 US Pat. No. 3,391,696 US Pat. No. 4,787,845 JP-A-3-261469 JP-A-9-285477 Utility Model Registration No. 2594664

  As the cleaning liquid discharge means in the conventional oral cleaning device as described above, the cleaning liquid discharge pipe or the nozzle attached to the tip thereof is formed of glass, metal, or synthetic resin (molded product nozzle, for example, Patent Document 1, 6), attaching a pointed elastic tip to the tip of the cleaning liquid discharge tube, and inserting the tip into the periodontal pocket to discharge the cleaning liquid (see, for example, Patent Documents 2 to 4). is there. However, in the case of the former, the molded product nozzle, when the tip of the nozzle is applied to the target interproximal part or periodontal pocket, it slips from or disengages from the target part due to vibration or camera shake during cleaning liquid discharge. In addition, the cleaning liquid is easily ejected unnecessarily or scattered around the periphery, and the soft tip in the oral cavity may be damaged at the tip of the nozzle by an erroneous operation. Further, in the latter case having an elastic tip having a sharp tip, in addition to the problem of useless ejection and scattering of the cleaning liquid as described above, the sharp tip has penetrated deeply into the periodontal pocket and the tooth There was a risk of damaging the bottom of the peripheral pocket.

  In view of the problems in the conventional oral cleaner as described above, the present invention provides a cleaning solution, an antibacterial agent, an anti-inflammatory agent, etc. without damaging the soft tissue in the oral cavity such as the gingival margin, periodontal pocket, and gum. The liquid containing the chemical is surely ejected to the parts to be cleaned, such as the interdental part, gingival margin, and periodontal pocket, and the part is efficiently cleaned by preventing unnecessary ejection and scattering of the cleaning liquid and chemicals. Oral irrigator that can be massaged.

  An oral cleaning device according to the present invention includes a cleaning liquid supply means, a cleaning liquid discharge pipe attached to the cleaning liquid supply means, and a cleaning liquid discharge pipe provided at the tip of the cleaning liquid discharge pipe and communicating with the discharge flow path of the cleaning liquid discharge pipe. An oral cleaning device comprising an elastic nozzle having an outlet, wherein the tip of the elastic nozzle is tapered in a conical shape having an apex angle of 35 ° to 70 °, and the conical tip A cleaning liquid discharge port is opened at the protruding end, and the periphery of the protruding end is rounded.

  In the elastic nozzle, the diameter of the cleaning liquid discharge port is in the range of 0.4 to 0.9 mm, the roundness of the peripheral edge of the protrusion is in the range of radius 0.5 to 1.0 mm, and the thickness is in the range of diameter 3 to 6 mm. Is preferred.

  Further, the elastic nozzle preferably has a JIS A hardness in the range of 40 ° to 75 °.

  In the mouth washer according to the present invention, the cleaning liquid supply means is preferably a portable container having a pump function.

  Further, it is preferable to provide a branch flow path for releasing an internal pressure generated when discharge of the cleaning liquid from the cleaning liquid discharge port is hindered separately from the discharge flow path of the cleaning liquid discharge pipe.

  The mouth washer of the present invention is formed by converging the tip of the elastic nozzle attached to the tip of the cleaning liquid discharge tube into a conical shape with an apex angle of 35 ° to 70 °. The tip of the elastic nozzle fits securely in the state where the opening of the triangular part is plugged into the triangular part in between, and the cleaning liquid can be reliably jetted toward the interdental part, There is little scattering, and it is possible to clean the interdental portion by removing it with a cleaning liquid. In addition, by supplying a solution containing antibacterial agents or anti-inflammatory agents to the interdental region, the plaque may be removed or suppressed, and the inflammatory action at that site may be suppressed or calmed down. it can. In addition, the elastic nozzle has a periodontal pocket when the tip is pointed at an appropriate angle as described above and the peripheral edge of the tip is rounded and is formed with a specific prescribed size. During cleaning, the cleaning liquid is surely ejected into the periodontal pocket while it is firmly pressed against the entrance of the periodontal pocket without risk of the tip of the elastic nozzle sticking into the periodontal pocket. Can be supplied, and drugs for suppressing inflammation can be supplied. In addition, the elastic nozzle attached to the tip of the cleaning liquid discharge tube is safe without being damaged even if it hits the gums of the gums due to its elasticity, and also prevents slippage due to the anti-slip effect. This also has the effect of preventing unnecessary jetting and scattering.

  In addition, when the branch flow path for releasing the internal pressure generated when the discharge of the cleaning liquid from the cleaning liquid discharge port is obstructed is provided separately from the discharge flow path of the cleaning liquid discharge pipe, the tip of the elastic nozzle When the cleaning part or the affected part is not properly pressed against the cleaning part or the affected part, or when the cleaning part or the affected part is swollen or swollen, the cleaning liquid discharge port is at least partially blocked and the cleaning liquid is discharged at least partly. Even if the internal pressure of the whole mouth washer, the cleaning liquid discharge pipe, and the elastic nozzle is increased, the cleaning liquid is discharged from the branch channel and does not accumulate inside the elastic nozzle. This prevents the cleaning liquid from splashing and the elastic nozzle from jumping out, and the user can detect abnormal operation by sensing the release from the branch channel in the oral cavity. That.

  FIG. 1 shows an embodiment of an oral cleaning device according to the present invention. The oral cleaner 1 includes a cleaning liquid supply means 2 and a cleaning liquid discharge pipe 3 attached to the cleaning liquid supply means 2, and an elastic nozzle 4 is provided at the tip of the cleaning liquid discharge pipe 3. The elastic nozzle 4 may be formed integrally with the cleaning liquid discharge pipe 3, or may be separately attached to the cleaning liquid discharge pipe 3 so as to be detachable.

  The mouth washer 1 shown in the figure is composed of a cleaning liquid container 21 having a pump function, and the cleaning liquid supply means 2 is provided in the cleaning liquid discharge pipe 3 each time a pressing portion (button) 22 provided on the cleaning liquid container 21 is pressed. Through the discharge flow path 31, the cleaning liquid is ejected from a discharge port 41 opened at the protruding end of the elastic nozzle 4 provided at the tip.

  The structure of the cleaning liquid supply means 2 is not particularly limited, and a conventionally known cleaning liquid container can be used. For example, a container having a pump function disclosed in JP-A-3-261469 (Patent Document 5), JP-A-9-2854477 (Patent Document 6), US Pat. No. 1,196,489, US Pat. No. 3199510, US Pat. No. 3,391,696 (Patent Documents 1 to 3) may be made of a container having elasticity. Further, the cleaning liquid supply means 2 may use an apparatus having an electrical and mechanical drive mechanism, or may have a separate water tank as disclosed in JP-A-7-59801. It may have a tank attached to the main body as disclosed in Kaihei 8-117254, and further, the driving portion of the electric toothbrush is driven to supply cleaning liquid as disclosed in Japanese Patent Laid-Open No. 10-314189. It may be a thing. Further, an apparatus having a cleaning liquid supply function by electric drive may be used. Furthermore, as the cleaning liquid supply means 2, a syringe as disclosed in US Pat. No. 4,787,845 (Patent Document 4) may be used, or disclosed in Registered Utility Model No. 2594664 (Patent Document 7). Moreover, what has an air mixing function can also be used. Moreover, you may make it connect the washing | cleaning liquid discharge pipe 3 to the faucet of a water supply etc. via a hose or a pipe.

The cleaning liquid supplied from the cleaning liquid supply means 2 is not particularly limited, and may be a chemical liquid containing an antibacterial agent or an anti-inflammatory agent effective for prevention or treatment of periodontal disease, or may be simple water. Good.
Antibacterial agents include, for example, bisbiguanide antibacterial agents such as chlorhexidine salts of hydrochloride and gluconate, quaternary ammonium salt antibacterial agents such as cetylpyridinium chloride, benzalkonium chloride, benzethonium chloride, and decalinium chloride, alkyldiamino hydrochloride Amino acid antibacterial agents such as ethyl glycine, coconut oil fatty acid acyl-arginine ethyl salt, halogenated diphenyl ether such as triclosan, thymol, isopropylmethylphenol (1-hydroxy-3-methyl-4-isopropylbenzene, paraoxybenzoate and its Esters, phenolic compounds such as carvacrol, resorcinol, heterocyclic antibacterial agents containing nitrogen atoms such as metronitazole, hexetidine, natural extract antibacterial agents such as 1,8-cineole, oil-soluble licorice extract, iodine Halogen compounds such as iodine glycerin.
Examples of the anti-inflammatory agent include non-steroidal anti-inflammatory agents such as ibuprofen, flurbiprofen, ketorolac and indomethacin, steroidal anti-inflammatory agents such as hydrocortisone and dexamethasone, azulene, azulene sulfonate, glycyrrhizic acid and salts thereof. Glycyrrhetinic acid, sugar beet extract, sodium chloride, tocopherol esters of acetic acid and nicotinic acid, pyridoxine hydrochloride, lysozyme chloride, tranexamic acid, epsilon aminocaproic acid, allantoins, dihydrocholesterol, epidihydrocholesterin and the like.

The cleaning liquid discharge pipe 3 attached to the cleaning liquid supply means 2 is made of, for example, a polyolefin resin such as polypropylene or polyethylene, a polyamide resin, a polyester resin, a polycarbonate resin, a polyacetal resin, an ABS resin, a synthetic resin such as a blend resin thereof, glass, stainless steel, or the like. Made of metal. The cleaning liquid discharge pipe 3 has a flange 32 for mounting on the cleaning liquid supply means 2 on the outer peripheral surface of the base end portion, and a cleaning liquid introducing portion 34 projects downward from the flange 32, and the cleaning liquid introducing portion 34 is The cleaning liquid supply means 2 is mounted in a state of being inserted into the container 21. The length of the cleaning liquid discharge pipe 3 is not particularly limited. In the example shown in the figure, the length from the bottom surface of the flange 32 protruding from the cleaning liquid container 21 to the front end is about 60 mm, and the length from the front end is about 1 / It is bent at position 5. The bending angle θ ₁ at the tip of the cleaning liquid discharge pipe 3 is not particularly limited, but is usually about 30 ° to 100 °, preferably about 30 ° to 60 ° with respect to the axis O of the cleaning liquid discharge pipe 3, or It is bent at an angle of about 90 °, and the illustrated example is bent at 45 ° with respect to the axis O. As described above, the cleaning liquid discharge pipe 3 is attached to the cleaning liquid supply means 2, and the tip thereof is bent, so that the cleaning liquid can be ejected at various angles in the oral cavity, and the operability is excellent. It will be a thing. Further, the discharge flow path 31 formed through the inside of the cleaning liquid discharge pipe 3 has its inner diameter gradually narrowing from the base end portion on the cleaning liquid container 21 side toward the tip end portion side where the elastic nozzle 4 is mounted. It is formed in a tapered shape. This increases the speed of the cleaning liquid discharged from the cleaning liquid container 21 through the discharge flow path 31 from the tip, and the cleaning liquid can be ejected at a higher speed into the interdental part and the periodontal pocket.

An elastic nozzle 4 as shown in FIG. 2 is provided at the bent tip of the cleaning liquid discharge pipe 3. The elastic nozzle 4 shown in the figure is formed separately from the cleaning liquid discharge pipe 3 and is mounted on the flange portion 35 formed at the front end so as to cover the front end of the cleaning liquid discharge pipe 3. A discharge hole 42 communicating with the discharge flow path 31 of the cleaning liquid discharge pipe 3 is opened to the outside by a cleaning liquid discharge port 41 at the tip. The elastic body nozzle 4 is made of an elastic material such as natural rubber, synthetic rubber, soft synthetic resin, or thermoplastic elastomer. As the synthetic rubber, styrene rubber, butadiene rubber, chloroprene rubber, butyl rubber, nitrile rubber, ethylene propylene rubber, silicone rubber, urethane rubber, fluorine rubber, acrylic rubber, chlorosulfonated polyethylene isoprene rubber, and the like are preferably used. . The soft synthetic resin is preferably soft polyamide resin, soft polyethylene resin, soft vinyl chloride resin, silicone resin, soft polyurethane resin, ionomer resin, EEA resin (ethylene / ethyl acrylate copolymer), ethylene / vinyl acetate. A copolymer resin, an ethylene / vinyl alcohol copolymer resin, or the like is used. Further, as the thermoplastic elastomer, preferably used are styrene elastomers, olefin elastomers, polyester elastomers, polyamide elastomers, nitrile elastomers, silicone elastomers, urethane elastomers, and the like. The tip 43 of the elastic nozzle 4 has an apex angle θ ₂ of 35 ° to 70 °, preferably 40 ° to 50 °, and is tapered in a conical shape of 40 ° in the illustrated example. The cleaning liquid discharge port 41 is open at the protruding end of the tip 43. The diameter (opening diameter) d of the cleaning liquid discharge port 41 is preferably in the range of 0.4 to 0.9 mm, and in the illustrated example, the diameter d is 0.6 mm. By setting the diameter d of the cleaning liquid discharge port 41 within the above range, a high-speed cleaning liquid can be ejected to the interdental part and the periodontal pocket. Further, the length L ₁ of the conical tip 43 of the elastic nozzle 4 is 4 to 6 mm, 5 mm in the illustrated example, and the total length L ₂ of the elastic nozzle 4 is 10 to 15 mm, approximately in the illustrated example. The thickness D is 3 to 6 mm in diameter, and 5 mm in the illustrated example. By setting the size of the elastic body nozzle 4 in the above range, it is not bulky in the oral cavity and the operability is good. Further, the peripheral edge of the conical tip 43 of the elastic nozzle 4 is rounded with a radius R of 0.5 to 1.0 mm, and in the illustrated example, a radius R of 0.7 mm.

  FIG. 3 shows another embodiment of the elastic nozzle, and this elastic nozzle 4B is for releasing the internal pressure generated when the discharge of the cleaning liquid from the cleaning liquid discharge port 41 is hindered. Except for providing the branch flow path separately from the discharge flow path 31 of the cleaning liquid discharge pipe 3, it has the same shape and structure as the elastic nozzle 4 shown in FIG. A side branch channel 44 and a side outlet 45 are provided. In the case of the elastic nozzle 4B provided with the side branch flow path 44, the cleaning liquid is elastically discharged from the discharge flow path 31 of the cleaning liquid discharge pipe 3 when the distal end portion 43 is appropriately pressed against the cleaning site or the affected part. The liquid is discharged from the cleaning liquid discharge port 41 through the discharge hole 42 of the body nozzle 4B. As long as the side branch channel 44 and the side discharge port 45 do not hinder the discharge of the cleaning liquid from the cleaning solution discharge port 41 at the tip of the elastic nozzle 4B, the inner port 46 of the side branch channel 44 discharges the cleaning solution. The pipe 3 is in close contact with the side surface of the flange portion 35 without any gap, and the cleaning liquid does not leak from the side branch channel 44. However, the cleaning liquid discharge port 41 is at least partially blocked when the tip 43 of the elastic body nozzle 4B is not properly pressed against the cleaning part or the affected part, or when the cleaning part or the affected part is swollen or swollen. If the discharge of the cleaning liquid is at least partially obstructed, the internal pressure of the entire oral cleaning device 1 and the cleaning liquid discharge tube 3 and the elastic nozzle 4 increases, and the load on the internal mechanism of the oral cleaning device 1 and the scattering of the cleaning liquid are scattered. When the cleaning liquid is generated or discharged to the tissue in the oral cavity at a pressure higher than necessary, or when the elastic nozzle 4 is provided separately from the cleaning liquid discharge pipe 3, the elastic nozzle 4 jumps out of the cleaning liquid discharge pipe 3. Can happen. Even in such a case, even if the cleaning liquid discharge port 41 is blocked by the side branch flow path 44 of the discharge port 42 as in the elastic nozzle 4B, the cleaning liquid is discharged from the cleaning liquid discharge pipe. 3 leaks from the interface between the elastic nozzle 4B and is discharged to the outside from the side branch channel 44 and is not accumulated inside the elastic nozzle 4B. Therefore, an increase in the internal pressure of the entire mouth washer 1 and the elastic nozzle 4B is suppressed, and the scattering of the cleaning liquid and the elastic nozzle 4B can be prevented. Further, the user can know that the operation is abnormal by sensing the release from the side branch channel 44 in the oral cavity. The side branch channel 44 has one or two locations, and the size of the hole is set so that the total cross-sectional area of each side branch channel 44 is equal to or larger than the area of the cleaning discharge port 41. It only has to be. The installation position of the side branch channel 44 is preferably at the tip of the outer periphery of the flange portion 35. Further, the direction of the side branch flow path 44 may be the same direction as the discharge flow path 31 in addition to the case where the direction is toward the outer peripheral direction of the flange portion 35.

  According to the mouth washer 1 of the present invention as described above, the elastic body nozzle 4 has a periodontal shape by sharpening the tip of the elastic body nozzle 4 at an appropriate angle as described above and rounding the peripheral edge of the protruding end. As shown in FIGS. 4 (a) and 4 (b), the triangle between the teeth between the adjacent teeth T and the teeth T and the gum 5 is prevented while preventing the inside of the pocket from being pierced or damaging the gums. A high-speed cleaning liquid is applied while preventing the leakage and scattering of the cleaning liquid while the protruding end of the elastic nozzle 4 is securely fitted to the part 6 and the opening of the triangular part 6 is securely fitted and closed. It can be washed by removing the food residue by spraying into the gap of the triangular portion 6, and removing or suppressing plaque, suppressing tissue inflammation, etc. with a chemical solution containing antibacterial agent or anti-inflammatory agent it can. Further, as shown in FIG. 4 (c), the cleaning liquid is sprayed into the periodontal pocket 7 in a state where the elastic body nozzle 4 is fitted near the entrance of the periodontal pocket 7, and the inside of the periodontal pocket 7 is washed. While being able to sterilize, the elastic body nozzle 4 does not pierce into the periodontal pocket 7 and is not damaged.

  As described above, the mouth washer 1 of the present invention has no risk of damaging soft tissues in the oral cavity such as periodontal pockets, and prevents triangular portions between teeth and gums, gingival margins, periodontal pockets, and the like. It is possible to effectively wash the irrigation liquid and supply chemical liquids containing antibacterial agents and anti-inflammatory agents, etc., so that the medicinal ingredients can be effectively acted on, such as caries and periodontal diseases. Can greatly contribute to prevention. In addition, the cleaning liquid or the chemical liquid is repeatedly ejected and can be appropriately stimulated to produce a massage effect by hitting the gingiva or interdental papilla.

Test Example 1: Evaluation of nozzle tip fit to interdental papilla, operability when supplying cleaning liquid, and supply stability due to difference in apex angle of nozzle tip (test method)
The elastic body nozzle 4 which the front-end | tip part 43 has the angle | corner of the apex angle (theta) ₂ shown in following Table 1, and shape | molded with the silicone rubber of JISA hardness 60 degrees was created. These elastic body nozzles 4 were attached to the tip of the mouth washer 1 shown in FIG. The cleaning liquid container 21 of the oral cleaner 1 was previously filled with tap water. After mounting the nozzle, using the jaw model, using the interdental papilla of the lower first molar and the second molar, each elastic body nozzle 4 having a different angle θ ₂ of the distal end 43 to the interdental papilla The fitting of the nozzle tip, the operability when supplying the cleaning liquid to the interdental part, and the supply stability of the cleaning liquid to the interdental part were evaluated. Evaluation was performed based on the following criteria. In the comprehensive evaluation, even if one of the evaluation items has “x”, it is judged that the function as the target product of the present invention is not satisfied. . In addition, if each evaluation item is “Δ” or more, it is judged that the minimum function of the target product is satisfied, and the overall evaluation is “Δ”. Furthermore, all the evaluation items were “◯”, and the overall evaluation was also “◯”. And the thing whose said comprehensive evaluation is more than "(triangle | delta)" was set as the pass.

(Evaluation criteria for the fit of the tip of the nozzle to the interdental papilla)
◯: There is no gap between the nozzle tip and the interdental papilla by fitting.
Δ: A small gap is formed between the interdental papilla.
X: A considerably large gap is formed between the interdental papilla.

(Evaluation criteria for operability when supplying cleaning liquid to the interdental area)
○: The nozzle tip is not shaken and can be supplied easily.
Δ: The nozzle tip is slightly shaken but can be supplied.
X: The nozzle tip is greatly shaken and requires considerable care in supply.

(Stable supply of cleaning liquid to the interdental area)
○: The cleaning liquid can be supplied stably even when there is a load due to camera shake during operation.
Δ: When a load due to camera shake during the investigation is applied to the nozzle, the nozzle is slightly deformed, but the cleaning liquid can be supplied.
X: The nozzle is deformed by a load due to camera shake during operation, and the cleaning liquid cannot be supplied stably.

As shown in Table 1, the apex angle θ ₂ of the nozzle tip is set to 35 ° to 70 °, further 40 ° to 50 °, so that the fit of the nozzle tip to the interdental papilla and the supply of cleaning liquid It is possible to provide an oral washer having excellent operability and supply stability.

It is principal part sectional drawing which shows one Embodiment of the oral cavity cleaning device which concerns on this invention. It is an expanded partial sectional view of a cleaning fluid discharge pipe tip part of an oral cavity cleaner. It is an expanded fragmentary sectional view of the washing | cleaning liquid discharge pipe front-end | tip part which shows other embodiment of an oral cavity cleaning device. (A) is a schematic diagram in the oral cavity, (b) is a schematic diagram showing a state in which the triangular portion between the interdental portion and the gum is cleaned by the oral cleaner, and (c) is a periodontal pocket by the oral cleaner. It is a schematic diagram which shows a mode that it wash | cleans.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Oral washer 2 Cleaning liquid supply means 3 Cleaning liquid discharge pipe 4, 4B Elastic body nozzle 5 Gum 6 Triangular part 7 Periodontal pocket

Claims (7)

A cleaning liquid supply means, a cleaning liquid discharge pipe attached to the cleaning liquid supply means, and an elastic nozzle provided at the tip of the cleaning liquid discharge pipe and having a cleaning liquid discharge port communicating with the discharge flow path of the cleaning liquid discharge pipe An oral washer,
The tip of the elastic nozzle is tapered in a conical shape with an apex angle of 35 ° to 70 °, and a cleaning liquid discharge port is opened at the tip of the tip of the cone, and the periphery of the tip is rounded. An oral irrigator characterized by being attached.   The oral cleaner according to claim 1, wherein the diameter of the cleaning liquid discharge port is in the range of 0.4 to 0.9 mm.   The oral cavity cleaner according to claim 1 or 2, wherein the roundness of the protruding end of the elastic nozzle is in a range of a radius of 0.5 to 1.0 mm.   The oral cavity cleaning device according to any one of claims 1 to 3, wherein a thickness of the elastic body nozzle is in a range of 3 to 6 mm in diameter.   The oral cavity cleaner according to any one of claims 1 to 4, wherein the elastic body nozzle has a JIS A hardness of 40 ° to 75 °.   The oral cleaner according to any one of claims 1 to 5, wherein the cleaning liquid supply means comprises a portable container having a pump function. The branch flow path for releasing the internal pressure generated when discharge of the cleaning liquid from the cleaning liquid discharge port is obstructed is provided separately from the discharge flow path of the cleaning liquid discharge pipe. Oral irrigator.

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