Patent ID: 8714109

Claim:
An animal fixation device, comprising: a columnar cage in which an animal is arranged; a rotation mechanism configured to rotate said cage; an euthanizing gas supply mechanism configured to supply euthanizing gas into said cage; and a solid refrigerant supply mechanism configured to supply a solid refrigerant into said cage, wherein said euthanizing gas supply mechanism includes a gas manifold for euthanizing which is connected to said cage so that said euthanizing gas flows on an inner wall of said cage along a circumferential direction, said solid refrigerant supply mechanism includes a solid refrigerant supply line which is connected to said cage so as to supply said solid refrigerant during rotation of said cage, wherein said cage includes: an outer cage which is columnar shape such that an interior area of the outer cage is defined by an inside wall of the columnar shape; said outer cage is fixed to said solid refrigerant supply line; and an inner cage which is arranged so as to line said inside wall of the outer cage such that an outside wall of the inner cage overlaps said inside wall of the outer cage and thereby the inner cage is located within the interior area of the outer cage; and said rotation mechanism is configured to rotate only said inner cage, wherein a solid refrigerant connecting opening which is connected to said refrigerant supply line is provided on said outer cage, a plurality of refrigerant reception openings are provided on said inner cage at a position corresponding to said refrigerant connecting opening, said plurality of refrigerant reception openings are arranged along a circumferential direction, and said plurality of refrigerant reception openings are configured to receive said solid refrigerant in sequence by rotation of said inner cage.