A personal care device (10) configured to generate a feedback signal in response to excessive pressure applied by a user includes: a body portion (12) comprising a first interacting portion (40); a shaft (24) comprising a second interacting portion (42), wherein the shaft and the second interacting portion are moveable, in response to a force applied by the user, from a first position in which the first interacting portion does not physically interact with the second interacting portion, to a second position in which the first interacting portion physically interacts with the second interacting portion; and a sensor (70) configured to detect the physical interaction between the first interacting portion and the second interacting portion, and further configured to activate a feedback signal, in response to the detection of the physical interaction, to the user that excessive pressure is being applied.

A personal care device (10) configured to generate a feedback signal in response to excessive pressure applied by a user includes: a body portion (12) comprising a first interacting portion (40); a shaft (24) comprising a second interacting portion (42), wherein the shaft and the second interacting portion are moveable, in response to a force applied by the user, from a first position in which the first interacting portion does not physically interact with the second interacting portion, to a second position in which the first interacting portion physically interacts with the second interacting portion; and a sensor (70) configured to detect the physical interaction between the first interacting portion and the second interacting portion, and further configured to activate a feedback signal, in response to the detection of the physical interaction, to the user that excessive pressure is being applied.

An oral healthcare personal appliance (10), configured for use with a removable brush head (20) having a first light guide (28), comprises a handle (16), an actuator (14) with a hollow drive shaft (18), a second light guide (36) disposed co-axially between first and second ends of the hollow drive shaft, a rear stop connection adapter (62) coupled to the second ends of the hollow drive shaft and the second light guide, a light source (66) to emit light into the second light guide, and an optional front stop connection adapter (34) coupled to the first ends of the hollow drive shaft and the second light guide. Physically coupling the brush head to the handle enables both (i) a rotation of the brush head via a rotation of the hollow drive shaft and (ii) a transmission of light from the light source through the second light guide and into the first light guide.

The present invention relates to an electrochemical device for releasing ions, comprising an electrical circuit comprising a first electrode and a second electrode adapted for providing a galvanic cell when the electrodes are exposed to a fluid constituting an electrolyte, and a boost converter adapted for amplifying a potential generated between the first and the second electrode. The electrical circuit further comprises a third electrode connected with an output side of the boost converter, wherein the second and the third electrode constitutes an electrolytic cell powered by the galvanic cell when the electrodes are exposed to a fluid. The present invention further relates to devices, such as a toothbrush or a shaver, adapted for being used in connection with a fluid, comprising such electrochemical device for releasing ions.

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.

Described herein are devices for cleansing the internal surface of various body cavities. The devices generally include a handle and one or more cleansing tips having different sets of cleansing surfaces. In addition to removing debris, and disrupting bacterial biofilms so as to make these bacteria more susceptible to various cleansing agents, the devices may be configured to deliver an antiseptic agent, an anti-inflammatory agent, or a fragrance to the body cavity surfaces, or deliver UV light to sanitize the surfaces. Methods for cleansing the surfaces of body cavities such as the nasal passages and vaginal cavity are also described herein. Systems including one or more cleansing devices and one or more cleansing formulations are further described.

A brushroll for a surface cleaning apparatus includes a brush dowel defining a central rotational axis which extends longitudinally through the brush dowel. The brush dowel includes bristle supports, sweeper supports, and a shroud surface extending between the bristle supports and the sweeper supports. A plurality of bristles protrude from the bristle supports.

An oral cleaning unit, e.g. a head for an oral cleaning and/or treatment device, includes electrodes for generating an RF field for providing an oral cleaning and/or treatment function. The unit includes at least a first and second protruding structure, which protrude in a same general direction away from a base or support structure. Each comprises one or more electrodes. The protruding structures are arranged facing one another and separated by a space or gap which is configured so as to be able to receive a tooth pushed or inserted therein between the first and second protruding structures, and with the protruding structures extending on either side of the tooth, i.e. straddling the tooth. This allows the RF electrodes comprised by the protruding structures to reach to a location at least part way down side faces of the tooth, closer to interproximal spaces, enabling interproximal spaces to be better cleaned, and optionally also to be sensed using RF energy/fields interacting with dental features, when the electrodes are suitably driven by an RF signal.