EP0135161A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
CT couch apparatus having a lift
Assignee: Toshiba Corp
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Filing: 1984-08-17
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Granted: —
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Expires: 2004-08-17
Abstract
Abstract First and second arms (42, 44) are supported, rotatable to each other and in the shape of X, by a shaft (46). The lower end of the first arm (42) is on the side of a scan gantry (90) and rotatably supported on a base (30) by means of a rotation fulcrum (48). The lower end of the second arm (44) and upper ends of the first and second arms (42, 44) are supported by base and frame rails (32, 72) through movement fulcrums (60a, 60b, 60c) to be rotatable in relation to and movable along the rails. A tension spring (56) is stretched between the second arm (44) and a mounting frame (70) to urge the mounting frame toward the scan gantry (90). Stoppers (76, 78) are arranged in the frame rails (72) to prevent the movement fulcrums (60b, 60c) of the first and second arms from moving from their predetermined positions in the direction of their separating from the scan gantry. The first arms are rotated and erected by a hydraulic cylinder (36). The mounting frame (70) is lifted along an arc whose center is the rotation fulcrum, with the first arms (42) contacting the first stoppers (78), and then vertically lifted, with the second arms (44) contacting the second stoppers (76).
Inventors
- 👤 Yoshinori C/O Patent Divison Manabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 06:24
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/04; A61B6/0487; A61G; A61G7/00; A61G7/002; A61G7/012
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
367 words
A CT couch apparatus having a lift for placing a patient inside the opening (92) of a scan gantry (90) comprising: a base provided with a pair of parallel base rails (32) thereon; a couch (80) on which the patient is laid down; a mounting frame (70) for supporting the couch to advance and retreat the latter into and from the opening of the scan gantry and having a pair of frame rails (72) parallel to the base rails; characterized by compring: an arm structure (40) arranged on the base to support the mounting frame and including arm assemblies (41) each of which has a pair of first and second arms (42, 44) attached to the base and frame rails, respectively, a shaft (46) for supporting the arms of the arm assembly, rotatable to each other, in the shape of an X, a rotation fulcrum (48) for supporting the lower end of the first arm (42), rotatable in relation to the base, and movement fulcrums (60, 60a, 60b, 60c) for supporting the lower end of the second arm and upper ends of both arms, rotatable in relation to and movable along the base and frame rails; a means (36) for rotating the arms (42, 44) in the direction of lifting them relative to the base; an elastic means (56) for urging the mounting frame (70) in a first direction (4) along the frame rails and in relation to the base; and first and second stoppers (76, 78) for preventing the movement fulcrums at the upper ends of the first and second arms from moving, relative to the mounting frame, in a direction reverse to the first direction, the first stopper being contacted with the movement fulcrum of the first arm by the elastic means when the mounting frame is located between a position where the patient is placed on and off the couch and a shifted position which is higher than the patient-placing position, and the second stopper being contacted with the movement fulcrum of the second arm by the elastic means when the mounting frame is located between the shifted position and a position where the couch is inserted into the opening of the scan gantry.
Claim 2
Dependent Claim
367 words
A CT couch apparatus having a lift for placing a patient inside the opening (92) of a scan gantry (90) comprising: a base provided with a pair of parallel base rails (32) thereon; a couch (80) on which the patient is laid down; a mounting frame (70) for supporting the couch to advance and retreat the latter into and from the opening of the scan gantry and having a pair of frame rails (72) parallel to the base rails; characterized by compring: an arm structure (40) arranged on the base to support the mounting frame and including arm assemblies (41) each of which has a pair of first and second arms (42, 44) attached to the base and frame rails, respectively, a shaft (46) for supporting the arms of the arm assembly, rotatable to each other, in the shape of an X, a rotation fulcrum (48) for supporting the lower end of the first arm (42), rotatable in relation to the base, and movement fulcrums (60, 60a, 60b, 60c) for supporting the lower end of the second arm and upper ends of both arms, rotatable in relation to and movable along the base and frame rails; a means (36) for rotating the arms (42, 44) in the direction of lifting them relative to the base; an elastic means (56) for urging the mounting frame (70) in a first direction (4) along the frame rails and in relation to the base; and first and second stoppers (76, 78) for preventing the movement fulcrums at the upper ends of the first and second arms from moving, relative to the mounting frame, in a direction reverse to the first direction, the first stopper being contacted with the movement fulcrum of the first arm by the elastic means when the mounting frame is located between a position where the patient is placed on and off the couch and a shifted position which is higher than the patient-placing position, and the second stopper being contacted with the movement fulcrum of the second arm by the elastic means when the mounting frame is located between the shifted position and a position where the couch is inserted into the opening of the scan gantry.
Claim 3
Dependent Claim
50 words
The CT couch apparatus having a lift according to claim 1, characterized in that the rotation fulcrum (48) is located nearer the scan gantry (90) than the movement fulcrum (60a) at the lower end of the second arm (44), and the first direction (4) is directed toward the scan gantry.
Claim 4
Dependent Claim
40 words
The CT couch apparatus having a lift according to claim 2, characterized by comprising a connector member (54) which holds the first arm (42) of one arm assembly (41) and one of the other arm assembly parallel to each other.
Claim 5
Dependent Claim
47 words
The CT couch apparatus having a lift according to claim 1, characterized in that the elastic means includes a tension spring (56) arranged between the second arm (44) and the mounting frame (70), and the mounting frame is urged in the first direction by this compression spring.
Claim 6
Dependent Claim
62 words
The CT couch apparatus having a lift according to claim 1, characterized in that the rotating means includes a connector rod (58) arranged between the first arms (42) and a hydraulic cylinder (36) mounted on the base and provided with a piston rod connected to the connector rod, and the first arms (42) are rotated and erected by the piston rod advanced.
Claim 7
Dependent Claim
76 words
The CT couch apparatus having a lift according to claim 5, characterized in that the movement fulcrum (60) includes a support plate (62) rotatably attached to the arm (42, 44) and extended along the longitudinal direction of the rail (32, 72), plural roller rods (64) separated from one another in the longitudinal direction of the rail and attached to the support plate, and rollers (66) rotatably attached to the roller rods and engaged with the rail.
Claim 8
Dependent Claim
65 words
The CT couch apparatus having a lift according to claim 6, characterized in that the rail (72) has a U-shaped section and the movement fulcrum (60) has four rollers (66) fitted between the upper and lower edges of the rail, two of the rollers being urged against the upper edge of the rail while the other two thereof against the lower edge of the rail.
References Cited (Backward Citations)
No citation records indexed.
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