A head unit configured to couple to a handle of an electric toothbrush, wherein the handle generates vibrational energy transferred to the head unit, the head unit comprising a proximal end and a distal end; a base adjacent to the proximal end, an exterior wall extending from the proximal end to the distal end, wherein the exterior encases a plurality of hollow chambers, wherein each of the plurality of hollow chambers are separated by a scaffold, wherein the scaffold connects to the exterior wall; and a bulb having an exterior surface configured to transfer the vibrational energy to an object.

An added inertia resonant system (12) for a power toothbrush (10) comprises a drive shaft (16), a drive system (22), and at least one inertial weight member (24). The drive shaft (16) has a principal axis (26) that defines a center of rotation. The drive system (22) imparts a reciprocating motion to the drive shaft (16) about the principal axis(26). The at least one inertial weight member (24) couples to the drive shaft (16) and comprises a planar material having a complex shape balanced along an x-, y-and z-axis to enable the drive system (22) to achieve low power, high amplitude motion of the drive shaft (16) when placed under user loading. A method for providing added inertia in a resonant system for a power toothbrush is also disclosed.

An added inertia resonant system (12) for a power toothbrush (10) comprises a drive shaft (16), a drive system (22), and at least one inertial weight member (24). The drive shaft (16) has a principal axis (26) that defines a center of rotation. The drive system (22) imparts a reciprocating motion to the drive shaft (16) about the principal axis(26). The at least one inertial weight member (24) couples to the drive shaft (16) and comprises a planar material having a complex shape balanced along an x-, y-and z-axis to enable the drive system (22) to achieve low power, high amplitude motion of the drive shaft (16) when placed under user loading. A method for providing added inertia in a resonant system for a power toothbrush is also disclosed.

A personal care cleaning device (10) including a housing (12), a resonant drive actuator (20), which includes a rotor (24) having a first moment of inertia (J.sub.r) and a stator (22) having a second moment of inertia (J.sub.s); a first plurality of leaf spring elements (60) having a first spring constant (k.sub.rh), each leaf spring element of the first plurality of leaf spring elements (60) being connected the housing (12) and to the rotor (24) such that each leaf spring element of the first plurality of leaf springs elements (60) extends radially from the rotor (24) to the housing (12), each leaf spring element of the second plurality of leaf spring elements (62) being connected to the housing (12) and engaging with the stator (22), wherein the ratio of the first (k.sub.rh) and second (k.sub.sh) spring constants is sufficiently similar to the ratio of the first (J.sub.r) and second moments (J.sub.s) of inertia such that there is substantially no resulting torque transmitted to the housing (12) during operation.

The present invention discloses ultrasonic phototherapeutic dental braces and a use method. The dental braces include: a transparent substrate, a phototherapeutic optical fiber, an ultrasonic transducer, an incoming line slot, a wire, and a plastic keel, where the phototherapeutic optical fiber, the ultrasonic transducer, the wire, and the plastic keel are all disposed inside the transparent substrate; the transparent substrate includes an arched end and a performed slot; the performed slot is used for fastening the transparent substrate on teeth of a person; the incoming line slot is disposed at the arched end of the transparent substrate; the incoming line slot is used for leading the wire and the phototherapeutic optical fiber into the transparent substrate; the phototherapeutic optical fiber is used for emitting therapy light to irradiate the therapy light into the oral cavity; the wire is connected to the ultrasonic transducer, the wire is externally connected to a power supply, and is used for supplying power for the ultrasonic transducer; the ultrasonic transducer is used for emitting ultrasonic waves; and the plastic keel is used for adjusting a shape of the transparent substrate. The present invention harmonically combines mechanically cleaning the oral cavity with ultrasonic waves with a photobiomodulation on the oral cavity, and can better protect the oral cavity environment of a user.

The present invention discloses ultrasonic phototherapeutic dental braces and a use method. The dental braces include: a transparent substrate, a phototherapeutic optical fiber, an ultrasonic transducer, an incoming line slot, a wire, and a plastic keel, where the phototherapeutic optical fiber, the ultrasonic transducer, the wire, and the plastic keel are all disposed inside the transparent substrate; the transparent substrate includes an arched end and a performed slot; the performed slot is used for fastening the transparent substrate on teeth of a person; the incoming line slot is disposed at the arched end of the transparent substrate; the incoming line slot is used for leading the wire and the phototherapeutic optical fiber into the transparent substrate; the phototherapeutic optical fiber is used for emitting therapy light to irradiate the therapy light into the oral cavity; the wire is connected to the ultrasonic transducer, the wire is externally connected to a power supply, and is used for supplying power for the ultrasonic transducer; the ultrasonic transducer is used for emitting ultrasonic waves; and the plastic keel is used for adjusting a shape of the transparent substrate. The present invention harmonically combines mechanically cleaning the oral cavity with ultrasonic waves with a photobiomodulation on the oral cavity, and can better protect the oral cavity environment of a user.

Disclosed is a multi-functional visual electric toothbrush, including a main unit, an oral viewer, an interdental cleaning appliance and an electric toothbrush head. The oral viewer is connected to the main unit, the interdental cleaning appliance is connected to the front end of the oral viewer, and the electric toothbrush head is connected to a toothbrush driving mechanism. A circuit system and a control system of the main unit can not only transfer the energy of a power supply to the toothbrush driving mechanism, so as to drive the electric toothbrush head to work for large-area oral cleaning, but also connect a lighting system, an observation system and a switch of the oral viewer to control the oral viewer to work. The interdental cleaning appliance may be used cooperatively with the oral viewer to perform targeted cleaning on difficult-to-clean food debris in an oral cavity.

Disclosed is a multi-functional visual electric toothbrush, including a main unit, an oral viewer, an interdental cleaning appliance and an electric toothbrush head. The oral viewer is connected to the main unit, the interdental cleaning appliance is connected to the front end of the oral viewer, and the electric toothbrush head is connected to a toothbrush driving mechanism. A circuit system and a control system of the main unit can not only transfer the energy of a power supply to the toothbrush driving mechanism, so as to drive the electric toothbrush head to work for large-area oral cleaning, but also connect a lighting system, an observation system and a switch of the oral viewer to control the oral viewer to work. The interdental cleaning appliance may be used cooperatively with the oral viewer to perform targeted cleaning on difficult-to-clean food debris in an oral cavity.

The invention relates to a dental tool having a shank region, which is formed for coupling to a dental handpiece, and also having a work region, which is connected to the shank region. In this case, the shank region of the dental tool is formed so that there is the possibility of latchable insertion and removal without actuation. In particular, at least the shank region can consist of plastics material. As a result, inter alia facilitated handling of the tool and inexpensive production of the tool are rendered possible.

The invention relates to a dental tool having a shank region, which is formed for coupling to a dental handpiece, and also having a work region, which is connected to the shank region. In this case, the shank region of the dental tool is formed so that there is the possibility of latchable insertion and removal without actuation. In particular, at least the shank region can consist of plastics material. As a result, inter alia facilitated handling of the tool and inexpensive production of the tool are rendered possible.