1. Field of the Invention
This invention relates generally to oral care devices. More particularly the invention relates to a dental device configured to employ one or a combination of ultraviolet (UV) light radiation sanitation and/or sound frequency sanitation as a means for sanitizing a dental accessory housed within a housing portion of the dental device. Alternatively, the device may be provided with a brush component and the removably engageable sanitizing housing. The housing is configured with an interior cavity having UV illumination means contained within.
2. Description of the Related Art
Toothbrushes are well known oral care devices which are recommended by dentists and oral care professional worldwide. Proper oral hygiene has been shown to dramatically reduce the occurrence of dental cavities, gingivitis, and bad breath. However, it is conventionally known through current medical research, that without proper sanitation and/or sterilization of at least the bristles of a toothbrush after use, they will contain bacteria, germs, viruses, and dirt which can contribute to the spread of disease and sickness.
As a conventional solution, many health care professionals recommend placing the toothbrush in a case or housing when not in use to reduce the chance of bacteria and germs from reaching the bristles. However, one shortfall of this approach is that the housing itself may harbor bacteria if not cleaned or sanitized properly as well. Further, wet toothbrush bristles housed in a contained area, sometimes in the dark, are a perfect breeding ground for bacteria and pathogens already present on the brush. Therefore, in order to prevent increased propagation of such pathogens while in the housing, and to actually reduce the population in the brush head, there is a need for communicating some direct sanitation and sterilization to the toothbrush itself.
Prior art has shown many other attempts to provide toothbrush sanitation and/or sterilization means through the employment of UV light irradiation. Ultraviolet germicidal irradiation (UVGI) is a known disinfection method which employs ultraviolet (UV) light at sufficiently short wavelength to kill microorganisms such as bacteria and germs. Although UVGI methods are especially preferred for sterilization means, without proper irradiation of substantially the entire surface of the majority of bristles and the brush head, colonies of bacteria and other pathogens remain which can re-propagate. Additionally, because light is directional and subject to a blockage which creates shadows, without irradiation from a majority of angles some pathogens will not be properly subjected to light sanitation. Consequently, a secondary means of sanitation of the bristles and brush head which will reach around the curves and serpentine paths of brush bristles which harbor such pathogens and either remove them or seriously reduce their population. Further, conventional toothbrushes are generally configured to be held between the thumb and fingers affording a very small area to grip or frictionally engage the handle and resulting slippage.
As a result, there is a continuing unmet need for a toothbrush sanitation device which solves these and other problems of brush sanitizers of the current state of the art. Such a device should provide a compact, storable, transportable and easy-to-use apparatus which provides illumination which strikes the brush and bristles at a maximum number of angles to provide maximum sanitizing. Such a brush optionally should provide a secondary means for sanitization which is not subject to direct line contact and which will wrap around bristles and pathways therebetween to rid or at least reduce pathogen populations. Such a toothbrush should provide for enhanced gripping by employing the housing as an enlarged grip for the handle.
The forgoing examples of related art and limitation related therewith are intended to be illustrative and not exclusive and they do not imply any limitations on the invention described and claimed herein. Various limitations of the related art will become apparent to those skilled in the art upon a reading and understanding of the specification below and the accompanying drawings.
The device herein disclosed and described provides a solution to the shortcomings in prior art and achieves the above noted goals through the provision of a toothbrush device employing a chamber having means for projecting light in a sanitizing wavelength such as ultraviolet (UV) light radiation combined with a reflective surface area of the sanitizing chamber which enhances reflection and multiplies the number of angles of communication throughout the chamber of UV light waves generated or projected into the chamber. The chamber itself is formed within the axial cavity of a housing which is removably engageable with the brush, to position the brush head within the sanitizing chamber. Of course, in other embodiments, the sanitizing chamber might also be formed to engage existing toothbrushes or other dental accessories as a means for sanitizing them. When employed with an engageable handle member, the housing may be engaged as an extension of the handle of the toothbrush and provide a larger circumference gripping area for the user to hold the handle.
In accordance with one preferred mode of the device, the housing is formed with sidewalls defining an exterior surface opposite an axially disposed sanitizing interior cavity. At least one aperture is formed in the sidewall and is positioned to be in operative communication with the interior cavity.
The interior cavity employs UV radiation means, such as one or a plurality of UV bulbs or LED's which communicate UV light. For instance ultraviolet (UV) rays with a wavelength between 100 nm and 280 nm with a particularly preferred wavelength of 254 nm will effectively kill bacteria, viruses, yeast, molds and algae which might otherwise multiply on the brush head. It is believed the UV radiation breaks through the outer membranes of such organisms, destroying or inactivating their DNA thus preventing them from reproducing. Such light sanitization safely and effectively sanitizes the brush and brush head in the axial chamber.
The light source producing light in the UV ranges of 100 nm to 260 nm communicates such into the sanitizing interior cavity which is preferably lined circumferentially with a reflective angled curvilineal surface. This angled circumferentially disposed surface causes reflections and re-reflection of communicated UV light. Thus directly radiated and reflectively radiated light rays from the UV source impact the brush head and bristles at many different angles concurrently, to remove pathogens which otherwise would thrive in hidden areas of the bristles.
The housing additionally includes means for powering the UV radiation means, such as a rechargeable battery, or other suitable means for storage of electrical power sufficient to power the UV light or LED. Additionally preferred is a pulsing of the UV light from the irradiation source from a lower energy radiation to a higher energy or much brighter radiation of light, to generate sequential higher energy pulses of UV light which will reflect into more hidden areas of the brush head from subsequent reflecting from the reflective angled surfacing.
Optionally, but preferable as a secondary sanitation means, sound frequency sanitizing may be employed concurrently with the light sanitization. Such may be accomplished by the communication of sound waves into the sanitizing chamber from a means for sound generation in the proper frequencies. For instance, Ultrasonic waves ranging from 20 to 100 kHz in frequency have been successfully used as a surface cleaning technique in the medical and precision processing industries for a number of years. Various pathogens suffer damage and may be removed at other frequencies which may be ascertained from literature on the subject however the current favored mode is noted above.
Means for generation and communication of sonic waves into the sanitization chamber to provide the sound frequency sanitization, would be a frequency wave tone generator which would receive power from onboard battery power or other sound frequency generators which will produce sound in the above noted frequency ranges. A microchip controller may be employed to sequentially move the sound generation to the individual frequencies adapted to kill the desired pathogens for periods of time before moving to other individual frequencies.
Although certain wavelength and frequency ranges are herein provided for illustrating effective sanitization by means of light and sound, it should be understood that the dental device can be configured to emit any light wavelength, or any sound frequency, with minor variation in component selection, to accomplish the objective of sanitizing the dental accessory or instrument. Accordingly, the scope of the invention is not to be limited with respect to the above illustrative examples.
In one as-used mode for sanitization, the toothbrush portion, if employed in combination, is positionable in an engagement to the housing, such that the housing is employed as a handle for operating the toothbrush in a conventional manner. In a second as used mode or sanitization mode, the toothbrush portion is reversible in its engagement with the housing, such that the toothbrush head having bristles thereon is positionable in registered engagement within the interior cavity of the housing, and adjacent the reflective surfaces and in communication with the UV radiation and/or sound frequency sanitization means communicated therein. Activation of the UV light source and/or sound frequency generation source can be provided by an operable switch on the exterior of the housing. The switch may be on a timer as needed for conserving battery power.
With respect to the above description, before explaining at least one preferred embodiment of the herein disclosed invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangement of the components in the following description or illustrated in the drawings. The invention herein described is capable of other embodiments and of being practiced and carried out in various ways which will be obvious to those skilled in the art. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception upon which this disclosure is housing may readily be utilized as a basis for designing of other structures, methods and systems for carrying out the several purposes of the present disclosed device. It is important, therefore, that the claims be regarded as including such equivalent construction and methodology insofar as they do not depart from the spirit and scope of the present invention.
As used in the claims to describe the various inventive aspects and embodiments, “comprising” means including, but not limited to, whatever follows the word “comprising”.
Thus, use of the term “comprising” indicates that the listed elements are required or mandatory, but that other elements are optional and may or may not be present. By “consisting of” is meant including, and limited to, whatever follows the phrase “consisting of”. Thus, the phrase “consisting of” indicates that the listed elements are required or mandatory, and that no other elements may be present. By “consisting essentially of” is meant including any elements listed after the phrase, and limited to other elements that do not interfere with or contribute to the activity or action specified in the disclosure for the listed elements. Thus, the phrase “consisting essentially of” indicates that the listed elements are required or mandatory, but that other elements are optional and may or may not be present depending upon whether or not they affect the activity or action of the listed elements.
The objects features, and advantages of the inventive embodiments, as well as the advantages thereof over existing prior art, which will become apparent from the description to follow, are accomplished by the improvements described in this specification and hereinafter described in the following detailed description which fully discloses the invention, but should not be considered as placing limitations thereon.
The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate some, but not the only or exclusive, examples of embodiments and/or features. It is intended that the embodiments and figures disclosed herein are to be considered illustrative rather than limiting. In the drawings:
In this description, the directional prepositions of up, upwardly, down, downwardly, front, back, top, upper, bottom, lower, left, right and other such terms refer to the device as it is oriented and appears in the drawings and are used for convenience only; they are not intended to be limiting or to imply that the device has to be used or positioned in any particular orientation.
Now referring to drawings in
The handle 15 has an engagement end 16, including means for removable engagement of the handle 15 to extend axially from an engagement to the housing 20, such as cooperative engagement components positioned on each of the housing 20 and handle 15, such as mating threads 18, or a frictional engagement, or other means for engagement of the distal end of the handle 15, to the housing 20, to allow the housing 20 to function as an extension of the handle 15 and provide and enlarged grip circumference for the handle 15. So engaged the user can more easily hold the device 10 assembled with the toothbrush 12 extending axially from one end of the housing 20 which is gripped in the user's hand.
The housing 20 has a substantially cylindrical elongated body 21 having an axially oriented interior cavity 24 defined by an interior surface of one or a plurality of sidewalls 22. The interior cavity 24 has a sanitizing chamber 27 formed by the reflective or mirrored interior sidewall 22 terminating at an end wall 30, and at an opening 26 providing a communication from exterior to the housing 20 into the sanitizing chamber 27. It is preferred that the opening have a circumference just slightly larger than a circumference of the handle 15 to allow passage of the head therethrough and to thereby minimize the escape of any UV light and/or sound from the sanitizing chamber 27.
Additionally, there is included a means for UV radiation positioned to communicate UV light into sanitizing chamber 27 portion of the cavity 24, such as a plurality of UV lights 35 provided by bulbs or LED's generating UV light in the ranges between 100-280 nm. As can be seen, the curved reflective surface along the length of the sanitizing chamber 27 and at both ends of the sanitizing chamber 27 combined with minimizing loss through provision of an opening just slightly larger than the handle 15, provides means for vectoring the light generated by the means for UV illumination such as the LED or UV light 35, toward the brush head at an infinite number of angles depending on the reflection from multiple surfaces. Further the opening 26 being sized just larger than the circumference of the handle 15 minimizes loss.
Means for electrical power for the means for UV radiation and/or a sound frequency generator, 33 may be provided by a rechargeable battery 32 operatively engaged with the housing 20, and electrically engaged to the means for UV illumination such as UV lights 35 and/or wave tone generator 33 which provides a means for ultrasonic or sound sterilization.
Means for removable engagement of the toothbrush portion 12 to the housing 20 is provided by a cooperative fastening components on each of the housing 20 and the handle 15 such as a threaded engagement of the engagement handle 15 to an interior threaded portion 28 of the housing 20 at or near the open end 26 of the housing 20. So engaged, the handle 15 extends axially from the housing 20 which has the larger circumference to provide and enhanced gripping area for the hand of the user. Although threaded engagement is one preferred means of removable engagement, other means for removable engagement may be employed and are anticipated, for example, the removable engagement means can be snap fits, frictional engagement, a bayonet style engagement of mating components, or other suitable means.
As noted, in a first depicted as used mode in
In yet another preferred as used mode in
A switch 34 can be provided to allow the user to control electrical power to the UV lights 35 for UVGI sanitation and/or disinfection of the toothbrush 12 or to the sound frequency generator 33 for sound sanitation. The switch may allow for independent or concurrent use of UV and/or sound sanitation at the noted frequencies. As noted and preferred, sanitation is significantly enhanced by coating or otherwise forming the interior surface 25 of the sanitizing chamber 27 within the interior cavity, with a reflective material and angular circumferential sections, reflect the UV light within the sanitizing chamber 27 for improved sterilization. The curved ends and central areas of the reflective portion of the sanitizing chamber 27 also serve to reflect sound waves at an ultimate the number of different angles depending on number and angle of each reflection. Additionally, a tab 17 engaged to the toothbrush 12 portion of the device 10, allows the user to grasp the toothbrush 12 and rotate it out of its engagement the housing when in the second as used mode or sanitizing position.
In an exceptionally preferred feature of the current mode, is the employment of one or a plurality of circumferentially reflecting curved mirror 40 portions of the reflective surface positioned within sanitizing chamber 27 of the housing 20. The mirror 40 portions are substantially concave and curve around a 90 degree angle to provide a means for communicating the light emitted from the UV lights 35, and the sound from the sound frequency generator 33, to all interior surface areas 25 within the sanitizing chamber 27, due to the reflective quality of such, further enhancing UV sterilization. In addition, the mirror 40 portions can be formed of suitable material to provide enhanced means for sound frequency reflection, such as a hardened polymer, for reflecting the emitted sound frequencies from the frequency wave tone generator or sound frequency generator 33 to all interior surface areas 25 within the sanitizing chamber 27.
In another embodiment, a dental device comprises a handle portion and an accessory portion. The handle portion forms a housing with an interior cavity and an external gripping surface. The interior cavity is sealed with a hinged door forming at least a portion of the housing wall, the hinged door configured to open for providing access to within the interior cavity, and further configured to close during a sanitation cycle. The interior cavity forms a sanitation chamber by way of a reflective interior wall and at least one of an ultraviolet light source or a sound wave transducer configured to sanitize one or more objects or dental accessories within an interior volume thereof. In this regard, the dental accessory may comprise a brush, flosser, pic, massager, tongue cleaner, or other accessory, and is configured for removable attachment with the device. The dental accessory is further configured with a size sufficient to permit containment of the accessory within the sanitation chamber for undergoing one or more sanitation cycles therein.
Turning now to
The dental device may be powered by a single power source, such as one or more disposable batteries, one or more rechargeable batteries, or other commercially available power source. The dental device may be configured to recharge within a charging dock, or become engaged with a power cord, solar charged or other charging mechanism when embodied in a rechargeable form.
In other embodiments, a sanitation chamber is configured to removably attach with an existing toothbrush or other dental instrument. The sanitation chamber comprises a housing configured to receive at least a portion of the dental instrument therein. The housing comprises an aperture for receiving the at least a portion of a dental instrument, an interior sanitation chamber volume, an interior wall surface configured to reflect light within the sanitation chamber volume, and a sanitizing light emitting source such as a UV light emitting diode or other light source. In this regard, the sanitation chamber is configured to receive at least a portion of a dental instrument, introduce a sanitizing exposure of light within the sanitation chamber and reflect the light about the sanitation chamber volume for sanitizing bacteria and other pathogens within the sanitation chamber.
The various components of the device disclosed herein can be formed of conventional materials such as plastic or metal, however, can be formed of any material suitable for the purposes set forth in this disclosure.
This invention has other applications, potentially, and one skilled in the art could discover these. The explication of the features of this invention does not limit the claims of this application; other applications developed by those skilled in the art will be included in this invention.
It is additionally noted and anticipated that although the device is shown in its most simple form, various components and aspects of the device may be differently shaped or slightly modified when forming the invention herein. As such those skilled in the art will appreciate the descriptions and depictions set forth in this disclosure or merely meant to portray examples of preferred modes within the overall scope and intent of the invention, and are not to be considered limiting in any manner.
While all of the fundamental characteristics and features of the invention have been shown and described herein, with reference to particular embodiments thereof, a latitude of modification, various changes and substitutions are intended in the foregoing disclosure and it will be apparent that in some instances, some features of the invention may be employed without a corresponding use of other features without departing from the scope of the invention as set forth. It should also be understood that various substitutions, modifications, and variations may be made by those skilled in the art without departing from the spirit or scope of the invention. Consequently, all such modifications and variations and substitutions are included within the scope of the invention as defined by the following claims.
This application is a continuation in part (CIP) of U.S. Ser. No. 13/715,953, filed Dec. 14, 2012, and titled “SANITIZING TOOTHBRUSH”; the contents of which are hereby incorporated by reference.
Number | Date | Country | |
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Parent | 13715953 | Dec 2012 | US |
Child | 13952558 | US |