An oral care refill head (300), the oral care refill head (300) may be detachably coupled to a handle (200). The handle (200) may include a stem (250) that is received within a connection cavity (326) of the oral care refill head (300). The stem (250) and the connection cavity (326) may have specific geometries and structures to ensure an adequate coupling therebetween. An oral care implement (100), the oral care implement (100) have a pressure sensing assembly, excessive pressure applied onto the oral care refill head (300) will cause the motor (140) and a motor chassis (401) to rock. As the motor chassis (401) rocks, a contact element (456) thereon will actuate a pressure actuator element (455). In response, a control unit (150) may initiate generation of a user perceptible signal to inform the user of the excess pressure.

A photosensitive pressure alarm device for electric cleaning care appliances comprises at least one light source, at least one photosensitive unit, a light reflecting surface, a detection circuit, and an alarm portion. The light source and the photosensitive unit are provided on a movable component or a movable component on a same side, and the light reflecting surface is provided on a stationary component or the movable component. Under the combined action of an external force (F.sub.1) and an elastic force (F.sub.2), the light reflecting surface or the light source and the photosensitive unit provided on the movable component can move with the movable component, and the incident angle and the reflection angle of the light on the light reflecting surface change, causing that the light receiving area of the photosensitive unit changes, and in turn resulting in change of the electrical performance of the photosensitive unit.

The invention provides for an oral treatment unit, or an assembly of a plurality of oral treatment units, for confining an electromagnetic field having a frequency in the range of 100 kHz to 300 MHz and adapted to be inserted into an oral cavity, which may form part of an oral cleaning device in combination with a base unit, including a first cleaning element coupled to the oral treatment unit. The oral treatment unit further includes a material structure coupled to the oral treatment unit adapted to receive an initial electromagnetic field and output a focused electromagnetic field, wherein the material structure has a passive electromagnetic field focusing function, which focuses the received initial electromagnetic field in the near-field region of the material structure. A further aspect of the invention provides for an oral treatment unit, or an assembly of a plurality of oral treatment units, for confining and modulating an electromagnetic field having a frequency in the range of 1 MHz to 300 GHz and adapted to be inserted into the mouth, which may form part of an oral cleaning device in combination with a base unit, including a first cleaning element coupled to the oral treatment unit. The oral treatment unit further comprises an electromagnetic field focusing element adapted to receive an electromagnetic field having an initial frequency and output a focused electromagnetic field. The electromagnetic field focusing element comprises a first material structure having a first passive electromagnetic field focusing function, which confines the modulated electromagnetic field at a given distance from the first material structure by performing one or more of: an attenuation rate control function in the near-field region of the first material structure; or a propagation direction modification function on the electromagnetic field. The electromagnetic field focusing element has a modulation function that modulates the confined electromagnetic field, thereby generating a modulated electromagnetic field.

An oral cleaning device includes a head portion that supports cleaning elements, a handle portion extending from the head portion, an EMF generator disposed in the handle portion. An inductor is located in the head portion and is connected to the EMF generator.

Automatic toothbrushes are disclosed herein. A toothbrush configured in accordance with embodiments of the present technology can include, for example, a handle and a mouthguard coupled to the handle. The mouthguard can be configured to be positioned within a mouth of a user over multiple teeth of the user. A brush assembly having a plurality of bristles can be removably positioned within the mouthguard for engaging and cleaning the teeth of the user. A motor can be disposed within or coupled to the handle and configured to articulate the brush assembly within the mouthguard.

The invention relates to an electric toothbrush handle and an electric toothbrush. The electric toothbrush handle comprises: a shell, in the inner cavity of which at least one light emitting element is arranged; and a shading part, comprising a light transmission plate arranged on the periphery of the at least one light emitting element, and a first coating arranged on the outer surface and/or the inner surface of the light transmission plate; wherein a light transmission area in a set shape is formed at a position corresponding to each light emitting element in the first coating; and the light of the light emitting element is capable of penetrating through the light transmission area so that the shape of the light transmission area is visible via the shell. The electric toothbrush handle can avoid damage and even failure of a display mark due to wear thereof.

The invention relates to an electric toothbrush handle and an electric toothbrush. The electric toothbrush handle comprises: a shell in the inner cavity of which at least one light emitting element is arranged; and a display interface arranged on the outer side of the shell and covering the light emitting element; wherein the display interface is provided with a mark in a set shape at a position corresponding to each light emitting element; the light of the light emitting element is capable of penetrating through the display interface so that the mark is visible. With the mark formed on the display interface, the machining process of the electric toothbrush handle is simplified, and the electric toothbrush with the electric toothbrush handle can effectively prevent water ingress.

The present disclosure provides a brushhead for an power toothbrush detachably attached to a handle of the power toothbrush, the handle including a vibrating drive shaft, the brushhead comprising: a main body defining a receiving cavity which is configured to receive at least a portion of the vibrating driving shaft, the main body including a cavity wall substantially surrounding the receiving cavity and an end connected to the handle, with an opening which is defined in the end of the main body in air communication with the receiving cavity, so that the vibrating driving shaft is capable of being inserted into the receiving cavity through the opening; and an engaging assembly mounted in a side wall of the main body, the engaging assembly comprising an elastic member, which is made by metal material; wherein, a recess is defined in the outer surface of the side wall, the elastic member is deformably received in the recess, the elastic member is elastically deformed by force provided from the vibrating drive shaft when the brushhead is attached to the handle of the power toothbrush.

An oral care system includes an oral care implement and motion tracking attachment configured to allow tracking of the implement during an oral care activity such as tooth brushing. The oral care implement may include a handle and head. The tracking attachment is coupled to the implement and comprises colored tracking markers detectable by a programmable visual-based motion tracking unit. The tracking attachment in one configuration may comprise a housing with plural insertable tracking colored wedges. In another configuration, a colored tracking portion colored panels and optional colored neck band may be formed on or attached to the oral care implement. Both the tracking attachment and tracking portion embodiments as applicable facilitate tracking at least one of a position, orientation, movement, and the like of the oral care implement to which it is attached. The tracking attachment may be non-electric in nature without any onboard electronics in some embodiments.

Systems and method for an electric toothbrush and charging dock. The electric toothbrush may include at least one magnetic member and at least one charging coil in a central portion. The charging dock may include at least one magnetic member and at least one transmitting coil. The charging dock may include a proximal portion which may be attached to a distal portion of the charging dock to be rotatable relative to the distal portion. The charging dock may include at least one unit capable of receiving power from a power source. The energy received by the unit from the power source may be transmitted to the transmitting coil. The energy may be transmitted from the transmitting coil to the receiving coil in the electric toothbrush via inductive or resonance charging. The energy may be transferred from the receiving coil to a battery in the electric toothbrush.