A small appliance device, in particular a body-care appliance device, in particular a shaving apparatus device, beard-trimming device, hair-trimming device, epilating appliance device, tattooing appliance device, toothbrush device or the like, has a drive unit which comprises at least one drive element, wherein the drive element comprises at least one magnetically shape-shiftable material.

Disclosed is a portable multifunctional oral cavity cleaner which includes a tongue scraper, a material storage bottle, a material spraying device and a detachable housing; the tongue scraper can be changed into a contracted state from a stretched state via bending, rotating or folding, so as to reduce the volume of the oral cavity cleaner; an oral cavity cleaner body including the tongue scraper in the contracted state is housed in an inner cavity of the housing; and the housing can be reversely combined at the bottom of the oral cavity cleaner after being detached and used as a handle for prolonging the length of the oral cavity cleaner. The present application, featured with small size, light weight and portability, ensures hygiene in the carrying process and realizes multiple functions such as tongue coating removal, oral spray sterilization and interdental cleaning at one time.

Disclosed is a portable multifunctional oral cavity cleaner which includes a tongue scraper, a material storage bottle, a material spraying device and a detachable housing; the tongue scraper can be changed into a contracted state from a stretched state via bending, rotating or folding, so as to reduce the volume of the oral cavity cleaner; an oral cavity cleaner body including the tongue scraper in the contracted state is housed in an inner cavity of the housing; and the housing can be reversely combined at the bottom of the oral cavity cleaner after being detached and used as a handle for prolonging the length of the oral cavity cleaner. The present application, featured with small size, light weight and portability, ensures hygiene in the carrying process and realizes multiple functions such as tongue coating removal, oral spray sterilization and interdental cleaning at one time.

Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and/or by additional irrigation.

Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and/or by additional irrigation.

A motor and a personal-care device having the motor. The motor has a motor carrier made at least partially from a sheet metal material, a movable motor part, and a spring element that couples the movable motor part with the motor carrier. The sheet metal material comprises at least one coupling area where the sheet metal material is folded so that its two layers are facing each other while each of the two layers comprises a slot, the slots being aligned with one another. A connection extension of the spring element extends through the aligned slots.

A personal care device, such as an electric toothbrush, has a handle having a longitudinal axis and a treatment head connected to a carrier. The carrier extends within the handle and is mounted at the handle for pivoting motion around a pivot axis against a restoring spring force. A drive unit, such as a linear actuator, is mounted on the carrier, and at least one electrical connector is arranged between the handle and the carrier to convey electrical energy from an energy source fixedly mounted with respect to the handle to the drive unit. The electrical connector can be realized as an elastic metal sheet element having a spring constant for providing at least a part of the restoring spring force.

A drivetrain assembly (100) for a personal care device (10), the drivetrain assembly including a primary resonator (110); a secondary resonator (140) configured to reduce vibrations transmitted from the motor to a body (12) of the personal care device; a fixed point (130) positioned between the primary resonator and the secondary resonator; a first spring member (120) connected at a first end to the primary resonator and at a second end to the fixed point; a second spring member (150) connected at a first end to the secondary resonator and at a second end to the fixed point; a coupling spring (160) connected at a first end to the primary resonator and at a second end to the secondary resonator; and an actuator (170) configured to exert force on at least one of the primary resonator and the secondary resonator.

A drivetrain assembly (100) for a personal care device (10), the drivetrain assembly including a primary resonator (110); a secondary resonator (140) configured to reduce vibrations transmitted from the motor to a body (12) of the personal care device; a fixed point (130) positioned between the primary resonator and the secondary resonator; a first spring member (120) connected at a first end to the primary resonator and at a second end to the fixed point; a second spring member (150) connected at a first end to the secondary resonator and at a second end to the fixed point; a coupling spring (160) connected at a first end to the primary resonator and at a second end to the secondary resonator; and an actuator (170) configured to exert force on at least one of the primary resonator and the secondary resonator.

A pump structure of a portable oral irrigator, the oral irrigator main engine comprises a housing and a pump assembly; the pump assembly is disposed within the housing and is provided with a pump body, a driving motor, a water outlet provided corresponding to the water outlet nozzle, and a water inlet provided corresponding to the water inlet nozzle are disposed on the housing; an output shaft of the driving motor is drivingly connected to the pump body by means of a spur gear and a contrate gear; the pumping piston head is disposed in one end of the pump cylinder, and the other two ends of the pump cylinder are communicated with the water outlet nozzle and the water inlet nozzle; one end of the piston rod is connected with the pumping piston head; and the other end of the piston rod eccentrically and rotationally cooperates with the contrate gear.