Abstract: A medical device is provided. The medical device includes a shaft motor, a parallel manipulator, a receiving yoke, a runner and a transmission yoke. The shaft motor is configured to generate a mechanical force for manipulating a surgical tool. The parallel manipulator includes an end platform used to support the surgical tool, a base platform used to support the shaft motor and a plurality of limbs coupled between the end platform and the base platform. The limbs are configured to control movement of the end platform. The receiving yoke is coupled to the surgical tool. The runner is slidingly engaged to the shaft motor and configured to receive the mechanical force. The transmission yoke is coupled to the runner and the receiving yoke, and the transmission yoke is configured to transfer the mechanical force to the receiving yoke.

Abstract: A head-mounted device and a retractable headband are provided. The head-mounted device includes a host, a retractable headband, and an earphone. The host has a first connection part and a second connection part located on two opposite sides. The retractable headband has an earphone connection part and a first connection end and a second connection end located on two opposite sides. The first connection end is connected to the first connection part. The second connection end is connected to the second connection part. When the retractable headband is elongated by an elongation amount, a change in a distance between the earphone connection part and the first connection end is less than half of the elongation amount. The earphone is connected to the earphone connection part.

Abstract: A head-mounted device includes a host, a first cradle, a second cradle, a speaker, and a shape memory alloy element. The first cradle and the second cradle are connected to two opposite sides of the host. The speaker is movably disposed on the first cradle. The shape memory alloy element is connected between the speaker and the first cradle and is configured to move the speaker after being powered on and heated and shrinking.

Abstract: A medical device is provided. The medical device includes a shaft motor, a parallel manipulator and a shaft coupling. The shaft motor is configured to generate a mechanical force for manipulating a surgical tool. The parallel manipulator includes an end platform used to support the surgical tool, a base platform used to support the shaft motor and a plurality of limbs coupled between the end platform and the base platform. The limbs are configured to control movement of the end platform. The shaft coupling has a first end coupled to the surgical tool and a second end coupled to the shaft motor. The first end is swingable with respect to the second end along a direction, and the shaft coupling is configured to transfer the mechanical force to the surgical tool.

Abstract: A head-mounted display device includes a front-end assembly, a wearing assembly and a light-shielding face mask. The wearing assembly is assembled to the front-end assembly to position the front-end assembly on a user's face. The light-shielding face mask includes a frame and a cover. The frame is connected to the front-end assembly. The cover is flexible and connected to the frame to cover the user's eyes. The cover has a forehead portion corresponding to the user's forehead and a pair of eye tail portions respectively corresponding to a pair of eye tails of the user. The forehead portion pushed by the user's forehead drives the pair of eye tail portions to approach the pair of eye tails of the user respectively.

Abstract: A medical device is provided. The medical device includes a parallel manipulator. The parallel manipulator has an end platform coupled to a surgical tool and a base platform coupled to a machine module. The machine module is coupled to the surgical tool through a transmission shaft disposed between the end platform and the base platform. The transmission shaft has a transmission yoke, a runner, a first rod coupled to the transmission yoke, a second rod coupled to the runner, and a universal joint coupled between the first rod and the second rod.

Abstract: A head-mounted display device and a zoom lens module are provided. The zoom lens module includes a first fixing frame, an arc zoom ring, a second fixing frame, and a first non-circular lens. The first fixing frame has an arc segment and a non-arc segment connected to each other. The arc segment has a slot. The arc zoom ring is disposed on an inner side of the arc segment and capable of sliding in a circumferential direction of the arc segment. An outer side of the arc zoom ring has a slide bar. An inner side of the arc zoom ring has a guide block. The slide bar passes through the slot and is adapted to slide along the slot. The second fixing frame is disposed on an inner side of the first fixing frame and the arc zoom ring and capable of sliding in an axial direction of the arc segment. An outer side of the second fixing frame has a guide rail. The guide block is embedded in the guide rail and adapted to slide along the guide rail.

Abstract: A head-mounted device includes a host, a first cradle, a second cradle, a speaker, and a shape memory alloy element. The first cradle and the second cradle are connected to two opposite sides of the host. The speaker is movably disposed on the first cradle. The shape memory alloy element is connected between the speaker and the first cradle and is configured to move the speaker after being powered on and heated and shrinking.

Abstract: A head-mounted display device and an adjustment module are provided. The head-mounted display device includes a body and two adjustment modules. The two adjustment modules are configured to be assembled to two zoom lens groups of the body. Each of the adjustment modules includes a base, a sliding block, a first shape memory alloy (SMA) element, a first recovery element, a braking element, a second SMA element, and a second recovery element. The first SMA element is connected between the base and an actuating end of the sliding block and is configured to actuate the sliding block so that a transmission end of the sliding block drives the zoom lens group to zoom. The first recovery element is connected between the base and the actuating end and is configured to keep the sliding block at an original position when the first SMA element is in a power-off state. The braking element is engaged with a braking end of the sliding block when the braking element is in a braking position.

Abstract: A medical device is provided. The medical device includes a shaft motor, a parallel manipulator, a receiving yoke, a runner and a transmission yoke. The shaft motor is configured to generate a mechanical force for manipulating a surgical tool. The parallel manipulator includes an end platform used to support the surgical tool, a base platform used to support the shaft motor and a plurality of limbs coupled between the end platform and the base platform. The limbs are configured to control movement of the end platform. The receiving yoke is coupled to the surgical tool. The runner is slidingly engaged to the shaft motor and configured to receive the mechanical force. The transmission yoke is coupled to the runner and the receiving yoke, and the transmission yoke is configured to transfer the mechanical force to the receiving yoke.

Abstract: A medical device is provided. The medical device includes a shaft motor, a parallel manipulator and a shaft coupling. The shaft motor is configured to generate a mechanical force for manipulating a surgical tool. The parallel manipulator includes an end platform used to support the surgical tool, a base platform used to support the shaft motor and a plurality of limbs coupled between the end platform and the base platform. The limbs are configured to control movement of the end platform. The shaft coupling has a first end coupled to the surgical tool and a second end coupled to the shaft motor. The first end is swingable with respect to the second end along a direction, and the shaft coupling is configured to transfer the mechanical force to the surgical tool.

Abstract: A head-mounted display device includes a front assembly, a wearable assembly, and a cushion module. The wearable assembly is connected to the front assembly and is suitable for wearing the front assembly onto a face of a user. The cushion module includes a hard member, a soft member, and a fan. The hard member is connected to the wearable assembly. The soft member is connected to the hard member to contact skin of the user, and has a rear channel. The fan communicates with the rear channel. The soft member is connected to the hard member to contact the skin of the user, and the fan drives airflow to flow through the rear channel of the soft member to provide a heat dissipation effect.

Abstract: A verification block structure and a verification system for orthopedic surgery are provided. The verification block structure includes a base and an artificial bone block. The base has a carrying portion and a bottom corresponding to the carrying portion. The artificial bone block is detachably fixed to the carrying portion of the base, and a shape or a material of the artificial bone block is determined upon a bone characteristic of a patient and/or a surgical method.

Abstract: A medical device is provided. The medical device includes a parallel manipulator. The parallel manipulator has an end platform coupled to a surgical tool and a base platform coupled to a machine module. The machine module is coupled to the surgical tool through a transmission shaft disposed between the end platform and the base platform. The transmission shaft has a transmission yoke, a runner, a first rod coupled to the transmission yoke, a second rod coupled to the runner, and a universal joint coupled between the first rod and the second rod.

Abstract: A head-mounted display device includes a front assembly, a wearable assembly, and a cushion module. The wearable assembly is connected to the front assembly and is suitable for wearing the front assembly onto a face of a user. The cushion module includes a hard member, a soft member, and a fan. The hard member is connected to the wearable assembly. The soft member is connected to the hard member to contact skin of the user, and has a rear channel. The fan communicates with the rear channel. The soft member is connected to the hard member to contact the skin of the user, and the fan drives airflow to flow through the rear channel of the soft member to provide a heat dissipation effect.