Abstract: A vacuum isolation device includes: a frame seat, at least one gas hole portion being formed thereon; a seal band set, configured on one side of the frame seat; a door plate element, mounted on the seal band set; and a vacuum generating device, connected with the gas hole portion, where a gas passageway is formed between seal bands, and the gas hole portion is in communication with the gas passageway. A vacuum state is formed in the gas passageway through the gas hole portion when the vacuum generating device is operated through the above structure, causing the door plate element to be attached onto the seal band set by means of vacuum operation while the vacuum generating device is operated. Thereupon, gas will be drawn out via the gas hole portion when it leaks from the inside or outside, thereby achieving the prevention of gas leak.

Abstract: The present invention provides an improved positron radioactive drug radiation shielding device, which achieves savings in space required to store a canister after dismantling the device. Furthermore, a tungsten sleeve is disposed within the canister, and functions in coordination with a syringe. The tungsten sleeve is able to block radioactive radiation released by radioactive drugs contained in the syringe. Moreover, a front cover and a rear cover joined to two sides of the canister enable a hermetically-sealed space to be formed within the canister, which increases the effectiveness of blocking the amount of radiation from the canister, thereby reducing danger to the human body from the radiation.

Abstract: The present invention provides an improved high dosage radioactive drug subpackaging shielding device, which allows for transversal rotational movements by means of a disk, while outer grooves of support posts hook into inner grooves of long supports, thereby enabling longitudinal rotational adjustments of a drug canister disposed on the long supports. Position of the canister is fixed with a screw down device after making transversal rotational adjustments, and a catch device functioning in coordination with a round-hole perforated disk enables fixing the angle of the canister after making longitudinal rotational adjustments. Furthermore, hook grooves of a carry support are used to hook into inner grooves of support posts, thereby facilitating a user to conveniently detach and transport the canister, and enables the human body to avoid coming in direct contact with the canister containing radioactive drugs, thus preventing radioactive radiation from endangering the human body.