Abstract: A liquid injection device includes: an accommodating cavity for detachable mounting of an electronic vaporization device; a liquid storage tank; a liquid supply mechanism; and a control assembly. The control assembly is connected to the liquid supply mechanism and detects whether the electronic vaporization device is mounted in the accommodating cavity. The liquid supply mechanism is in communication with the liquid storage tank to: be connected to the electronic vaporization device and supply liquid to the electronic vaporization device when the electronic vaporization device is mounted in the accommodating cavity, and be disconnected from the electronic vaporization device and stop supplying liquid to the electronic vaporization device when the electronic vaporization device is removed from the accommodating cavity.

Abstract: Embodiments of the disclosure provide a video toothbrush. An exemplary video toothbrush may include a handle housing an exciter and a support element including a support neck and a support head. The support element may be configured to extend from a proximal connection with the handle to a distal end. The video toothbrush may further include a camera mounted near the distal end of the support head and a shaft extending from the support neck and configured to support a cleaning head toward a distal end of the shaft and configured to receive vibration from the exciter toward a proximal end of the shaft. The video toothbrush may also include the cleaning head having a plurality of bristles projecting in a first direction. The cleaning head may define a central opening. The central opening may be arranged to provide the camera with a view in the first direction.

Abstract: Embodiments of the disclosure provide a video toothbrush. An exemplary video toothbrush may include a handle housing an exciter and a support element including a support neck and a support head. The support element may be configured to extend from a proximal connection with the handle to a distal end. The video toothbrush may further include a camera mounted near the distal end of the support head and a shaft extending from the support neck and configured to support a cleaning head toward a distal end of the shaft and configured to receive vibration from the exciter toward a proximal end of the shaft. The video toothbrush may also include the cleaning head having a plurality of bristles projecting in a first direction. The cleaning head may define a central opening. The central opening may be arranged to provide the camera with a view in the first direction.