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1. 发明专利

JPS63206685A SCINTILLATION CAMERA 失效
公开(公告)号：JPS63206685A
公开(公告)日：1988-08-25
申请号：JP3989387
申请日：1987-02-23
申请人： HITACHI MEDICAL CORP
发明人： KAYANUMA NOBUYUKI
IPC分类号： G01T1/164 , A61B6/03 , G03B42/02
摘要： PURPOSE:To reduce the effect of external force excreted on the angle keeping accuracy of a radiation detector, by providing a detector brake mechanism capable of fixing the radiation detector having an angle of rotation set thereto to a detector support arm. CONSTITUTION:At first, a hoisting drum wheel 1B is freely rotatable to a rotary shaft 1A and connected to a brake 7 through a wire rope 8 and a hoisting drum wheel 7B and, therefore, the rotation of said hoisting drum 1B is fixed when the brake 7 is operated. Next, the lock state of a brake mechanism 4 and a detector brake mechanism 6 is released in such a state that the rotation of the hoisting drum wheel 1B is fixed. By this constitution, a detector support arm 1 becomes rotatable and shakable around the shaft 1A. In this case, for example, when the arm 1 is rotated in a clockwise direction, a radiation detector 2 rotates around a rotary shaft 2A in the counterclockwise direction opposite to the rotary direction of the arm 1. When the rotational ratio of the hoisting drum wheels 1A, 1B is constituted so as to become 1:1, the detector 2 rotates by the angle equal to the shaking angle of the arm. Therefore, an angle keeping mechanism can always set the angle of the detector 2 to a preset angle.

2. 发明专利

JPH01321388A COUNTER BALANCE CONSTRUCTION FOR SCINTILLATION CAMERA 失效
公开(公告)号：JPH01321388A
公开(公告)日：1989-12-27
申请号：JP15500488
申请日：1988-06-24
申请人： HITACHI MEDICAL CORP
发明人： TABUCHI HIDEHO , KAYANUMA NOBUYUKI
IPC分类号： G01T1/164
摘要： PURPOSE:To facilitate a weight balance adjustment by housing particulate materials in a container to compose a counter weight with the prevention of the movement of the particulate material. CONSTITUTION:A particulate material 11 flows into a cylindrical container 10 from an intake port 10c, the inflow thereof is stopped when a specified weight is estimated to be reached and a lid is put on the intake port 10c to finish the housing. Then, a pair of keep plates 14 and a plurality of cap screws 15 makes up a movement prevention means and the keep plate 14 presses the particulate materials 11 by screwing the cap screw 15 to complete a counter weight W. Then, when an estimated weight differs from a given weight, the particulate materials 11 are increased or decreased bit by bit at the intake port 10c or at an takeoff port 10d thereby enabling the adjusting of the weight.

3. 发明专利

JPS60159672A SCINTILLATION CAMERA 失效
公开(公告)号：JPS60159672A
公开(公告)日：1985-08-21
申请号：JP1436484
申请日：1984-01-31
申请人： HITACHI MEDICAL CORP
发明人： KAYANUMA NOBUYUKI , TAGUCHI MASATOSHI
IPC分类号： G03B42/02 , G01T1/164 , G01T1/29
摘要： PURPOSE:To enable safe execution of an operation for setting a space between a radiation detector and a patient by supporting the radiation detector to a base plate and lifting the same until a prescribed height is attained. CONSTITUTION:A radiation detector 10 is a hanger type camera and is supported by a shaft 12 between the open ends of an arm 11 having a U shape when viewed from the plane. The detector is rotated around the shaft 12 by an electric motor built in the arm 11. The base part of the arm is supported to a base plate 13 supported on floor and can rotate around the shaft 14. The arm is rotated by the motor and can be stopped at an optional rotating angle by an electromagnetic brake. The rotation and stoppage of the arm are controlled by a means 15 provided to the arm.

4. 发明专利

JPS60170779A SCINTILLATION CAMERA 失效
公开(公告)号：JPS60170779A
公开(公告)日：1985-09-04
申请号：JP2524384
申请日：1984-02-15
申请人： HITACHI MEDICAL CORP
发明人： TAGUCHI MASATOSHI , AOKI AKIRA , KAYANUMA NOBUYUKI
IPC分类号： G01T1/161 , G01T1/164 , G01T1/29
摘要： PURPOSE:To detect an obstacle with simple constitution by arranging a sensor in a mechanism which supports a radiation detector on a turntable outwardly at an acute angle to a horizontal surface. CONSTITUTION:The main body 11 is supported on a rail 15 laid on a floor through wheels 16 and moves linearly. The sensor 22 is arranged in the mechanism 14 which supports the radiation detector 13 on the turntable 12 at the acute angle to the horizontal surface, and detects a body and a person which disturbs its motion during rotation for single photon CT and movement for scintigraphy, so the number of sensors is decreased and the circuit constitution for controlling the driving mechanism for the turntable and main body is simplified, so that the cost for obstacle detection is reduced greatly.

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