US4589126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiotherapy treatment table
Assignee: Individual
•
Filing: 1985-01-22
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Granted: 1986-05-13
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Expires: 2005-01-22
Abstract
Abstract A radiotherapy treatment table is formed as a mobile table having a vertically movable patient supporting plane freely suspended at one end, all the wheels of said table being individually or jointly driven by a motor and turnable relative to the wheeled frame, a positioning and steering device being adapted to sense the position of the treatment table relative to a radiotherapy station and to drive and steer the table to a desired position in response to a measured actual position. The positioning and steering device may comprise sensors for inductively, optically or ultrasonically sensing the actual position of the table in an inductively, optically or ultrasonically marked coordinate system, and may also comprise a computer for controlling the positioning of the table and any preprogrammed movements relative to a treatment isocenter that may be necessary during the treatment.
Inventors
- 👤 Nils E. Augustsson
- 👤 Kjell O. T. Lindstrom
- 👤 Lars J. S. Mattsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:07
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/04; A61B6/0407; A61B6/0471; A61B6/44; A61B6/4405; A61B6/4423; A61N; A61N5/00; A61N5/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
134 words
A radiotherapy treatment table which has a vertically movable patient supporting plane mounted on a frame and adapted to support and position the patient during treatment, characterized in that the patient supporting plane is mounted at one end on a column on a mobile wheeled frame for the table, and at its other end is freely suspended, the column comprising a lifting device for raising and lowering of the patient supporting plane; that all the wheels of the wheeled frame are mounted on wheel holders rotatable relative to the wheeled frame and are motor-driven; and that the table has a positioning and steering device which senses the position of the treatment table relative to a radiotherapy station and drives and steers the table, in response to a measured actual position, into a desired position.
Claim 2
Dependent Claim
134 words
A radiotherapy treatment table which has a vertically movable patient supporting plane mounted on a frame and adapted to support and position the patient during treatment, characterized in that the patient supporting plane is mounted at one end on a column on a mobile wheeled frame for the table, and at its other end is freely suspended, the column comprising a lifting device for raising and lowering of the patient supporting plane; that all the wheels of the wheeled frame are mounted on wheel holders rotatable relative to the wheeled frame and are motor-driven; and that the table has a positioning and steering device which senses the position of the treatment table relative to a radiotherapy station and drives and steers the table, in response to a measured actual position, into a desired position.
Claim 3
Dependent Claim
20 words
A table as claimed in claim 1, characterized in that all the wheels of the wheeled frame are individually motor-driven.
Claim 4
Dependent Claim
22 words
A table as claimed in claim 1, characterized in that all of the wheels of the wheeled frame are jointly motor driven.
Claim 5
Dependent Claim
30 words
A table as claimed in claim 1, characterized in that it comprises a manual driving and steering device for rough adjustment of the table position relative to the radiotherapy station.
Claim 6
Dependent Claim
54 words
A table as claimed in claim 1 or 4, characterized in that the positioning and steering device comprises drive means for rotating and setting the rotatable wheel holders to control the direction of travel of the wheeled frame, and control means for controlling the travelling distance of the wheeled frame in the set direction.
Claim 7
Dependent Claim
34 words
A table as claimed in claim 5, characterized in that the positioning and steering device also comprises sensors for inductive, sensing of the actual position of the table in an inductively, marked coordinate system.
Claim 8
Dependent Claim
41 words
A table as claimed in claim 6, characterized in that the positioning and steering device comprises a computer for controlling the positioning of the table and any movements, preprogrammed relative to a treatment isocentre, that may be necessary during the treatment.
Claim 9
Dependent Claim
34 words
A table as claimed in claim 3, characterized in that the positioning and steering device also comprises sensors for optical sensing of the actual position of the table in an optically marked coordinate system.
Claim 10
Dependent Claim
41 words
A table as claimed in claim 8, characterized in that the positioning and steering device comprises a computer for controlling the positioning of the table and any movements, programmed relative to a treatment isocentre, that may be necessary during the treatment.
Claim 11
Dependent Claim
34 words
A table as claimed in claim 5, characterized in that the positioning and steering device also comprises sensors for ultrasonic sensing of the actual position of the table in an ultrasonically marked coordinate system.
Claim 12
Dependent Claim
41 words
A table as claimed in claim 10, characterized in that the positioning and steering device comprises a computer for controlling the positioning of the table and any movements, preprogrammed relative to a treatment isocentre, that may be necessary during the treatment.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |