Abstract: A mouth mirror apparatus includes a carrier seat that has first and second receiving spaces and multiple outlet passages embedded in a surrounding wall and intercommunicating the first and second receiving spaces. The mouth mirror apparatus further includes a handle grip cooperating with the carrier seat to define an air inlet passage that communicates with the second receiving space, a mirror body rotatably disposed in the first receiving space, and an impeller connected to the mirror body and driven by air which flows from the air inlet passage. Through combination of the mirror body, the impeller, and the arrangement of the air outlet passages, the mouth mirror apparatus can direct air current to render different functions.

Abstract: A support device for supporting a biological membrane includes a support bar that is elongated, that extends along a length direction and that has at least one cylindrical surface extending along the length direction for supporting the biological membrane. A method of using the support device, which is suitable for mounting on a space of a bone defect structure of a human body and which is suitable for supporting a biological membrane, is also disclosed.

Abstract: A support device for supporting a biological membrane includes a support bar that is elongated, that extends along a length direction and that has at least one cylindrical surface extending along the length direction for supporting the biological membrane. A method of using the support device, which is suitable for mounting on a space of a bone defect structure of a human body and which is suitable for supporting a biological membrane, is also disclosed.

Abstract: A mouth mirror apparatus includes a carrier seat that has first and second receiving spaces and multiple outlet passages embedded in a surrounding wall and intercommunicating the first and second receiving spaces. The mouth mirror apparatus further includes a handle grip cooperating with the carrier seat to define an air inlet passage that communicates with the second receiving space, a mirror body rotatably disposed in the first receiving space, and an impeller connected to the mirror body and driven by air which flows from the air inlet passage. Through combination of the mirror body, the impeller, and the arrangement of the air outlet passages, the mouth mirror apparatus can direct air current to render different functions.

Abstract: A mouth mirror apparatus is adapted to be connected to a suction device and includes a mounting frame, an elongated handle, and a mirror member. The mirror member is rotatably mounted on a major wall of the mounting frame and can be driven to rotate when the suction device is actuated. When the mirror member rotates, a centrifugal force is generated to fling off water drops and/or debris on a reflecting surface of the mirror member.

Abstract: A mouth mirror apparatus is adapted to be connected to a suction device and includes a mounting frame, an elongated handle, and a mirror member. The mirror member is rotatably mounted on a major wall of the mounting frame and can be driven to rotate when the suction device is actuated. When the mirror member rotates, a centrifugal force is generated to fling off water drops and/or debris on a reflecting surface of the mirror member.

Abstract: The invention provides a structure of skateboard base, which includes a base connected to the underside of the skateboard, a mounting bolt going through the skateboard base longitudinally, and a skateboard support to be connected to the lower part of the skateboard base and to be screwed by the mounting bolt. The left side and the right side of the skateboard support are pivotally connected to a wheel respectively. When a person is making a sliding turn on the skateboard, the turn can be more agilely made by utilizing a moveable component that is matched to the half-ball-shaped concave flange located at the lower part of the skateboard base, or by utilizing a rectangle-shaped axle hole that is located in the middle of the skateboard support to allow the mounting bolt to make a shift inside.