Classifications

• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
  • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
  • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
  • A46B11/0068—Brushes where the reservoir is specifically intended for solid substance that dissolves gradually
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B15/00—Other brushes; Brushes with additional arrangements
  • A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B15/00—Other brushes; Brushes with additional arrangements
  • A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
  • A46B15/0004—Arrangements for enhancing monitoring or controlling the brushing process with a controlling means
  • A46B15/001—Arrangements for enhancing monitoring or controlling the brushing process with a controlling means with means indicating the remaining useful life of brush
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B2200/00—Brushes characterized by their functions, uses or applications
  • A46B2200/10—For human or animal care
  • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

• the present invention relates to an oral care instrument with at least one oral care agent that can be delivered within the mouth of a user to provide the user with enhanced oral heath.
• the present invention also pertains to such an oral care instrument including a wear indicator that informs the user when the oral care agent has been depleted.
• Tooth decay and periodontal disease are typically caused by harmful bacteria within the mouth.
• Tooth decay and periodontal disease are typically caused by harmful bacteria within the mouth.
• the harmful bacteria mixes with proteins present in saliva, a film of plaque is formed on the teeth and soft tissue. If the plaque is not removed, it can attack the teeth and create cavities. Additionally, the plaque will attack the soft tissue within the mouth and cause gum disease, the leading cause of tooth loss in adults.
• decreasing the amount of harmful bacteria in the mouth has long been the target of persons working in the oral health care field.
• An aspect of the present invention pertains to an oral care instrument that includes and delivers an oral care agent within the mouth of a user.
• the oral care instrument includes a head having at least a portion formed of a material that defines cavities. At least one oral care agent is provided in a plurality of the cavities and dispensed within the mouth of a user when the oral care agent(s) contact a fluid or chemical within the oral cavity.
• the oral care instrument includes a wear indicator for indicating the amount of oral care agent.
• Another aspect of the present invention relates to an oral care device formed of a polymer that receives at least one oral care agent.
• the oral care agent(s) can be included in or on one or more surfaces of the oral care instrument for delivery into the oral cavity.
• the oral care agent(s) can be contained within cavities in one or more surfaces of a head.
• the oral care agent(s) can be formed into, or carried by, a thin slab subsequently bonded onto the toothbrush head; or applied onto the toothbrush head as a stable coating.
• the oral care agents can be released during one use, during multiple uses, or throughout the life of the instrument. Water, oral secretions and/or chemicals within the mouth can activate the oral care agents.
• Figure 1 is an isometric view of an oral care instrument according to aspects of the present invention
• Figure 2 is a view of one surface of the instrument of Figure 1 ;
• Figure 3 illustrates a surface of the instrument of Figure 1 taken opposite Figure 2;
• Figure 4 is an enlarged portion 4-4 of the surface of the instrument of Figures 1-3;
• Figure 5 is a cross section of one embodiment of a cavity shown in Figure 4;
• Figure 6 is a cross section of one embodiment of a cavity shown in Figure 4;
• Figure 7 is a partial cross section of the instrument of Figure 2;
• Figure 8 is a partial cross section of an instrument according to an alternative embodiment of the present invention.
• Figure 9 illustrates an embodiment of the instrument of Figure 2.
• Figure 10 is a perspective view of an alternative embodiment of an instrument according to the present invention.
• Figure 1 illustrates one embodiment of an oral care instrument 1 having an elongated handle 10 and a head 20 intended to be introduced into the mouth or oral cavity of a user.
• the oral care instrument 1 is not limited to a toothbrush as shown and described, but can have any shape or structure and perform any function that permits it to deliver oral care agents to the user, with non-limiting examples of other oral care instruments including tongue cleaners and portable brush, toothpick combinations.
• the instrument 1 can be used once and then discarded, or it can be used repeatedly over a period of time.
• the elongated handle 10 may be formed of many different shapes and with a variety of constructions that permit the oral care instrument 1 to be readily gripped and manipulated within the mouth of the user.
• the head 20 includes multiple surfaces that are exposed to fluids within the mouth during use.
• the head 20 includes a first surface 22 on a first side 23 and a second surface 24 on a second, opposite side 25. Sidewalls 26 extend between the surfaces 22, 24.
• Oral care elements 30 can extend from either or both surfaces 22, 24 of the head 20, which elements 30 can include teeth cleaning elements 35, such as elongated bristles or elastomeric fingers, or soft tissue cleaning elements such as tongue cleaning members (not shown) extending from either surface 22, 24.
• a third example includes a head 20 having teeth cleaning elements 35 extending from the first surface 22 and tongue cleaning elements (not shown) extending from the second surface 24.
• oral care elements 30 disclosed herein are not limited to those discussed above. Instead, the term "oral care element” is generic and intended to include all types of elements that can be used within a mouth including different tooth and soft tissue cleaning members that are not mentioned above, gum massaging members and other forms of oral cleaning or massaging members.
• the head 20 also includes at least one oral care agent for introducing into the mouth to perform an intended function.
• the oral care agent(s) can be provided in cavities 50 (See Figure 4) formed or present in the head 20.
• the oral care agent(s) can also be included in or on a separate member 100 positioned on one or more of the surfaces 22, 24 or 26 of the head 20 (See Figure 2). This member 100 may be provided in place of, or in addition to, the cavities 50 within the head 20.
• the head 20 is generally formed of a material having a plurality of the externally exposed cavities 50 that are open to their respective outer surface 22, 24, 26.
• the entire head 20 can be formed of this material or the material can be applied over an inner core (not shown).
• the material used to form the head 20 can include any one of a wide variety of commercially available polymers, such as a thermoplastic polymer for example.
• the oral care instrument 1 is formed from a polypropylene, such that upon manufacture it is formed with internally extending cavities. Different thermoplastic polymers or polymers having different molecular weights typically have different melting and solidifying characteristics. Therefore, it is within the purview of a skilled artisan to select a polymer suitable for a given application.
• the oral care instrument 1 can be formed of polypropylene materials such as those available from M.A. Industries.
• the head 20 formed of a polypropylene material is manufactured using a sintering process.
• the head 20 can formed at the same time as the remaining portions of the oral care instrument 1 as a single, continuous member.
• the head 20 can be manufactured as a component that is assembled as part of the instrument 1.
• the head 20 can then be attached through a number of techniques including welding via ultrasonics, heat staking, laser, etc. or through mechanical methods that also permit the head 20 to be removed and discarded.
• the term "cavity” is intended to refer to an opening in the head 20, whether present in the head material itself or intentionally formed therein, that preferably does not extend all the way through the head.
• the term “exposed surface” relates to a surface that defines the shape of the head 20 and which generally defines the boundary between the head 20 and its environment.
• the externally exposed cavities 50 are capable of receiving and retaining one or more of the dispensable oral care agents.
• the cavities 50 can receive these agents in a powered form, a liquid form or both.
• the cavities 50 will receive and retain the oral care agent(s) until a predetermined amount has been received or the cavity is filled.
• the size and shape of these cavities 50 may be varied so they can include greater amounts of an oral care agent or an oral care agent with larger or different shaped molecules.
• the oral care instrument 1 can have cavities 50 that deliver oral care agent(s) into the mouth of a user at different rates.
• These rates can be controlled, for example, by the size of the exposed surface area of the respective cavity 50 and contained oral care agent in the outer surface 22, 24, 26 of the head, the shape of the cavities 50, the depth of the cavities 50 and/or the characteristics of the contained oral care agent(s).
• Adjacent cavities 50 can have different sizes in order to accommodate different amounts of oral care agent(s) or different molecular sized oral care agent(s).
• the oral care instrument 1 can have different oral care agent release characteristics that control when and how much of each oral care agent is delivered into the oral cavity.
• a larger thermoplastic granule size for the head 20 may preferably be selected and, where it is desired that the oral care agent(s) be dispensed more slowly, a smaller thermoplastic granule size may preferably be selected.
• Adjacent cavities 50 within the outer surfaces of the head 20 can carry the same or different oral care agents.
• the same void 50 can carry different oral care agents (A, B), either layered on top of each other ( Figure 5) for controlled release timing or adjacent to each other ( Figure 6) so they will react simultaneously when they come into contact with an activator.
• the active oral care agents can function as, for example, abrasives, mouth fresheners, tooth whiteners, vitamins, anti-bacterial/anti-microbial agents, plaque dispersants, de-sensitizing agents for the mouth and teeth, anti-cavity agents, and/or combinations of these functional agents to provide individual or combined, synergistic benefits.
• Oral care agents can also include flavorings, decorations, nutritional and body supplements such as calcium. The calcium could, for example, be provided in 1 mg single use dosages. The flavorings could be released to indicate that the oral care element 1 is functioning properly or to indicate that the instrument 1 is exhausted and ready to be disposed or recharged. Also, the oral care agents could eliminate particular enzymes from within the mouth of the user.
• the decorations applied by the oral care agents could temporarily add coloring, sparkle, glitter and/or indicia to the teeth of the user. Further, the lack of fluid within the mouth could trigger an oral care agent, such as stimulant for the salivary gland, provided within the cavities 50. The amount and rate of delivery for these agents will depend on the amount needed and the agent being applied.
• the oral care agents can be delivered to the cavities in a solid and/or liquid compound.
• the material of the oral care instrument 1 is immersed in a desired liquid so that the oral care agent(s) within the liquid can flow and remain within the cavities 50. As it dries, the oral care agent 20 becomes secure within the cavities 50. It is also possible to impregnate the cavities 50 of the portion of the head 20 with desired oral care agent(s) during production. It is also understood that a spent oral care instrument, i.e., one in which the oral care agent(s) has been depleted, may advantageously be recharged with an oral care agent by immersing it again in a liquid that carries the desired oral care agent(s).
• the cavities 50 can be replenished (recharged) on a regular basis, including daily for those instruments providing single dosages of at least one oral care agent.
• the head 20 may be advantageously used to dispense or release the oral care agent(s) within the mouth.
• the oral care agents will typically leach from their respective cavities 50 when they come into contact with fluids and/or chemicals within the mouth.
• active oral care agents that have been impregnated in the head material can be released into the mouth while brushing one's teeth.
• water and chemicals present in the mouth of a user will come into contact with the oral care agent(s) within the cavities 50 in the head 20. This will create a reaction in which the impregnated oral care agent(s) will leach out from the cavities 50 within the head 20.
• the use of different oral care agents in cavities 50 of the same head 20 has the capability of providing a synergistic benefit to the user. This can be especially useful when there are two beneficial oral care agent(s) which, in ideal circumstances, should be kept separated from each other until the desired time of use. In this manner the oral care instrument 1 can deliver multiple benefits to the user at one time.
• the oral care instrument 1 is also able to deliver the benefits of a dentifrice by impregnating the head material with the chemicals and abrasives found in toothpaste, for example.
• At least one of the dispensed oral care agents could also operate as a catalyst or enhancer for the toothpaste or other agents introduced into the mouth.
• this oral care instrument 1 it may be possible to deliver the benefits of a chemical, such as chlorhexidine for example, in a more efficacious manner.
• the delivery member 100 discussed above can provide or include the oral care agents discussed above and also function as a wear indicator. This member 100 can be located at any position on the head 20 and can provide notice to the user when the oral care agent is depleted. In a non-limiting illustrative embodiment, the delivery member 100 is shown as a strip 102 on the second surface 24. The delivery member 100 can have any shape and be located on or in any surface(s) on the instrument 1 that can be viewed by the user. In addition to identifying when the instrument 1 needs to be discarded or recharged, the delivery member 100 can also include and deliver at least one of the above-discussed oral care agents within the oral cavity.
• the delivery member 100 is removable and one or more replacement strips 102 can be applied in its place, in series or in parallel, to perform the same function(s) as the delivery member 100.
• These replacement strips 102 can be applied after each use of the instrument 1 or after repeated uses. Single or multiple strips can also be applied on a head surface to deliver multiple individual benefits or benefits that arise from the combined presence of multiple different strip actives. Such strips could be sold separately and applied by a user as desired. For the user's convenience, the replacement strips 102 could be carried within a recess or compartment in the handle 10 of the instrument 1.
• Replacement/enhancement strips 102 that perform different functions within the mouth can also be provided.
• the replacement/enhancement strips 102 can be designed to freshen breath, activate salivary glands, and/or desensitize teeth, etc.
• these different functioning strips 102 can be applied to the instrument 1 in place of, or in addition to, the strips 102 that are regularly used on the head 20 to kill harmful bacteria within the mouth, for example.
• the delivery member 100 (and replacement strips 102, see Figure 2) includes a first layer 110 preferably of a water insoluble material, such as a resin, that can hold the oral care agent(s) being delivered within the mouth.
• the water insoluble material maintains the structure of the delivery member 100 as the oral care agent leaches out and is delivered to the oral cavity of the user.
• the layer 110 of material can include a portion of the head 20 or a material layer designed to incorporate the desired criteria of release rate and dosage that is securable to the head 20.
• the delivery member 100 can be secured on or within at least one surface of the head 20.
• the delivery member 100 could be secured within a groove 118 ( Figure 8) that extends along or around the head 20.
• a groove 118 could be about 1 to about 2 mm deep, relative to the outer surfaces of the head 20.
• a second layer 114 is positioned over the first layer 110.
• This layer may be made of any material or materials that may be chemically and/or mechanically altered. Chemical and/or mechanical alteration may be accomplished by, e.g., chemical reactions initiated by components of the saliva or water, including dissolution or enzyme conversion and/or abrasion of the layer against the surfaces of the oral cavity.
• This layer 114 can erode due to abrasion during use of the instrument 1 or it can be formed of a water-soluble material.
• the outer layer 114 includes a water-soluble polymer (preferably polyethylene oxide, polyethylene glycol, or polyvinyl alcohol for example).
• the second layer 114 can also include one or more oral care agents, such as an anti-microbial agent.
• the anti-microbial agent can be any of those discussed above, such as chlorhexidine.
• Non-limiting examples of anti-microbial agents that can be used in place of chlorhexidine digluconate include antibiotics such as actinobolin, chlortetracycline, tetracycline, streptomycin, kanamycin, neomycin, niddamycin, bacitracin, erythromycin, penicillin, rancemycin, gramicidin, saramycin, and polymyxin B; as well as antiplaque enzymes such as mucinases, pancreatin, fungal enzymes, protease-amylase, dextranase, moimnase, zendium, amyloglucosidase, and glucose oxidase.
• antibiotics such as actinobolin, chlortetracycline, tetracycline, streptomycin, kanamycin, neomycin, niddamycin, bacitracin, erythromycin, penicillin, rancemycin, gramicidin, sara
• phenolic compounds e.g., phenol, thymol, 2-phenylphenol, hexylresorcinol), and listerine (thymol, eucalyptol, menthol, methylsalicylate); bi- pyridines (e.g., octenidene); pyrimidines (e.g., hexetidine); halogens (e.g., iodine, iodophores, fluorides); quaternary ammonium salts (e.g., cetylpyridinium chloride, benzethonium chloride, domiphen bromide); oxygenating agents (e.g., peroxides; perborate); herbal extracts (e.g., sangnimarine); heavy metal salts (e.g., silver, mercury, zinc, copper, tin); and other bis-biguanidines besides chlorhexidine (e.g.,
• the two layers 110, 114 can be produced either by conventional co-extrusion or co-injection molding techniques, from two different mixtures. Alternatively one layer can be extruded and then the other layer can be thermoformed/compression molded or laminated onto the extruded layer. Other methods of manufacture are also contemplated.
• the outer layer 114 dissolves and the oral care agent(s) leach out from the area exposed by the dissolved outer layer 114.
• the outer layer 114 dissolves away with repeated use, it not only exposes the oral care agent held in the resin, for example, but it also exposes indicia 120 that indicates the wear of the instrument 1, including when the oral care agent(s) within the instrument is depleted and needs to be replaced or recharged (Figure 9).
• the indicia 120 can be a visible color that attracts the user's attention to the layer 110 and illustrates that the amount of effective life remaining in the instrument 1.
• the indicia 120 can be a message that tells the user when the oral care instrument 1 is depleted ( Figure 9). Other manners of communication are also contemplated.
• a hydrogel is applied over at least one surface of the instrument 1 and/or forms at least one layer of the delivery member 100.
• the hydrogel releases oral care agents and/or absorbs other agents, bacteria and/or chemicals within the mouth and on the instrument 1.
• the instrument 1 can include any number of containers or capsules 200 secured to a surface of the head 20 or included within the head 20.
• Each capsule 200 can be formed of a biocompatible material and comprise at least one oral care agent, such as liquid and/or powder oral care agents.
• the agents provided in the capsules should not be mixed until within the mouth.
• These capsules 200 can burst under pressure or dissolve and release the oral care agent(s) into the oral cavity.
• a single container or capsule 250 having two or more chambers 252, 254 is secured to a surface of the instrument 1.
• a membrane 255 extends between the chambers 252, 254. Over time, the membrane 255 will dissolve or break. This failure of the membrane can be time dependent and/or as a result of use of the instrument 1 within the mouth.
• the membrane 255 dissolves, breaks or otherwise wears away from an inner wall of the capsule 250, the materials in the chambers 252, 254 contact each other and cause a perceptible change that indicates that the oral care agent in the instrument 1 may be depleted.

Landscapes

• Cosmetics (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
• Brushes (AREA)

Priority Applications (13)

Applications Claiming Priority (2)

Related Parent Applications (1)

Related Child Applications (2)

Publications (1)

Family

ID=37440744

Family Applications (1)

Country Status (13)

Cited By (6)

Families Citing this family (5)

Citations (4)

Family Cites Families (8)

• 2006
  • 2006-08-24 CN CN200680040423XA patent/CN101299944B/zh not_active Expired - Fee Related
  • 2006-08-24 CA CA 2742129 patent/CA2742129C/en not_active Expired - Fee Related
  • 2006-08-24 RU RU2009133035/12A patent/RU2517554C2/ru not_active IP Right Cessation
  • 2006-08-24 RU RU2013156598/12A patent/RU2567680C2/ru not_active IP Right Cessation
  • 2006-08-24 MY MYPI20080332A patent/MY146561A/en unknown
  • 2006-08-24 MX MX2012004500A patent/MX344589B/es unknown
  • 2006-08-24 BR BRPI0615130-2A patent/BRPI0615130A2/pt not_active IP Right Cessation
  • 2006-08-24 EP EP06789969.0A patent/EP1924169B1/en not_active Not-in-force
  • 2006-08-24 WO PCT/US2006/033021 patent/WO2007025012A1/en active Application Filing
  • 2006-08-24 CA CA2620057A patent/CA2620057C/en not_active Expired - Fee Related
  • 2006-08-24 ES ES06789969.0T patent/ES2441041T3/es active Active
  • 2006-08-24 MX MX2008002465A patent/MX2008002465A/es active IP Right Grant
  • 2006-08-24 AU AU2006283081A patent/AU2006283081B2/en not_active Ceased
  • 2006-08-24 EP EP12182542.6A patent/EP2529643B1/en not_active Not-in-force
  • 2006-08-24 CA CA2854080A patent/CA2854080A1/en not_active Abandoned
  • 2006-08-24 RU RU2008111502/12A patent/RU2376917C1/ru not_active IP Right Cessation
  • 2006-08-24 KR KR1020087007320A patent/KR100979832B1/ko not_active IP Right Cessation
  • 2006-08-25 TW TW095131227A patent/TWI412340B/zh not_active IP Right Cessation
• 2008
  • 2008-09-23 HK HK08110534.4A patent/HK1115038A1/xx not_active IP Right Cessation
• 2010
  • 2010-10-13 AU AU2010231393A patent/AU2010231393B2/en not_active Ceased

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