To surely apply treatment to a fish while hardly presenting a threat to the life of a fish body, even in the absence of special experience, skill, etc., when only the spinal cord of the fish is injured in the state of keeping the fish alive.
A treatment implement 10 is inserted into the neural arch 4 of the fish 1 from its tail, and the spinal cord 5 near the medulla oblongata 7 is injured. In this case, attention has to be paid not to push in the spinal cord 5 together with other regions, and pressure on the medulla oblongata 7 and the brain is prevented. When a special-shape portion 10k on the leading end side of the treatment implement 10 is a first constitutional example, the treatment implement 10 is inserted into the vicinity of a position not to come into contact with the vicinity of the medulla oblongata 7; and subsequently, it is moved in a pull-out direction, so that the nerves of the spinal cord 5 can be injured by an engaging portion g of the special-shape portion 10k. When the special-shape portion 10k is a second constitutional example, the nerves of the spinal cord 5 are injured by a piercing effect exerted by an acute portion e.
COPYRIGHT: (C)2010,JPO&INPIT
Kenji Suisan Co., Ltd.
Shinei Trading Co., Ltd.
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