公开(公告)号：JP4084458B2

公开(公告)日：2008-04-30

申请号：JP10666198

申请日：1998-04-16

Applicant: バイオアナリティカル・システムズ・インコーポレーテッドBioanalytical Systems,Inc.

Inventor： ウィリアム・ジェイ・シュミット ,  カーティス・イー・ボース ,  キャンディス・ビー・キッシンジャー ,  ドニー・エイ・エバンス

IPC: A01K15/00 ,  A01K67/00 ,  A01K1/03 ,  A01K29/00 ,  A61B5/11 ,  G01B11/00 ,  G01B11/26

CPC classification number: A01K29/005 ,  A01K1/031 ,  A61B5/1105 ,  A61B2503/40 ,  A61B2503/42 ,  A61B2562/221

Abstract: A movement-responsive system (10) for conducting tests on freely-moving animals is disclosed. The invention includes a container (14) for housing the animal (12), a mechanism (16) for rotating the cage (14) in response to rotational movement of the animal and one or more test leads (18,20,22,24) connected to the animal for performance of biomedical tests such as infusion, in vivo ultrafiltration, laser-doppler monitoring of blood flow, electrical stimulation and in vivo microdialysis. The container (14) is caused to rotate in the opposite (counter-rotation) direction of the sensed direction of rotation of the animal (12) so that the one or more test leads (18,20,22,24) do not become entangled, twisted, disconnected, or clamped. The rotating mechanism includes a simple, reliable sensor assembly (32) including a pair of strategically placed, close-ended limit detectors (70,72) which are activated by a triggering element (84) which is also a part of the sensor assembly. The sensor assembly is mounted on a counter-balanced arm (38) which is responsive to upward and downward movements of the animal (12). No complex control system is required for the present invention yet adjustment of the sensitivity of the rotating mechanism is easy to accomplish and may be performed by the average user of the apparatus. Further, the leads may all be continuous, thereby eliminating problems caused by the use of liquid swivels with independently rotating halves or by commutator connectors.