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Patent US3720817A successfully refreshed from Google Patents.
US3720817A
Expired / Lapsed
US
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Automated radiation therapy machine
Assignee: JARIAN ASS
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Filing: 1970-11-27
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Granted: 1973-03-13
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Expires: 1990-11-27
Abstract
Abstract A computer assisted radiation therapy machine is disclosed The machine includes a rotatable gantry having a radiation source portion and a beam stopping portion. The gantry is rotatable about a patient treatment couch which is rectilinearly translatable in three orthogonal directions as well as being rotatable about the vertical axis. A computer controls the operations of the machine to automatically set the position of the gantry relative to the couch for treatment of a patient. The automated motions of the gantry and the couch are simultaneous for decreasing the setup time. In addition, the computer includes a collision avoidance program which averts collision between the couch or patient, and the gantry.
Inventors
- 👤 K Dinwiddie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/44; A61B6/4476; A61B6/10; A61B6/102; A61B6/4429; A61B6/4435; A61B6/4441; A61N; A61N5/00; A61N5/01; A61N5/10; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/188; G21; G21K; G21K5/00; G21K5/10; H; H05; H05G; H05G1/00; H05G1/08; H05G1/26; H05G1/30; H05G1/38; H05G1/42; H05G1/44; A61N5/1048; A61N2005/1074
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
249 words
In a radiation apparatus, couch means for supporting a patient to receive radiation, radiation source means for directing a beam of radiation onto the patient, rotatable support means for supporting said radiation source, means for rotating said support means in a locus of points about said couch means, means for translating said couch means relative to the locus of points traversable by said support means, means for establishing signals corresponding to prescribed positions of said support means and said couch means, means for generating positional signals representative of the actual positions of said support means and said couch means, means for comparing the respective prescribed position signals with the respective actual position signals to derive control signals, and means for applying the control signals to said support rotation means and said couch translation means for simultaneously rotating and translating said support and couch means to the desired positions, whereby the setup time to set the prescribed positions of said support means and said couch means is minimized, and wherein said couch means is translatable over a locus of points in interference with the locus of points traversable by said support means such that collisions between said couch means and said support means is possible, means for monitoring simultaneous translation of said couch and support means, taking into account the prescribed positional signals for said support and couch means, for determining when said support and couch means are on collision courses and producing an output determinative of the collision course.
Claim 2
Dependent Claim
249 words
In a radiation apparatus, couch means for supporting a patient to receive radiation, radiation source means for directing a beam of radiation onto the patient, rotatable support means for supporting said radiation source, means for rotating said support means in a locus of points about said couch means, means for translating said couch means relative to the locus of points traversable by said support means, means for establishing signals corresponding to prescribed positions of said support means and said couch means, means for generating positional signals representative of the actual positions of said support means and said couch means, means for comparing the respective prescribed position signals with the respective actual position signals to derive control signals, and means for applying the control signals to said support rotation means and said couch translation means for simultaneously rotating and translating said support and couch means to the desired positions, whereby the setup time to set the prescribed positions of said support means and said couch means is minimized, and wherein said couch means is translatable over a locus of points in interference with the locus of points traversable by said support means such that collisions between said couch means and said support means is possible, means for monitoring simultaneous translation of said couch and support means, taking into account the prescribed positional signals for said support and couch means, for determining when said support and couch means are on collision courses and producing an output determinative of the collision course.
Claim 3
Dependent Claim
249 words
In a radiation apparatus, couch means for supporting a patient to receive radiation, radiation source means for directing a beam of radiation onto the patient, rotatable support means for supporting said radiation source, means for rotating said support means in a locus of points about said couch means, means for translating said couch means relative to the locus of points traversable by said support means, means for establishing signals corresponding to prescribed positions of said support means and said couch means, means for generating positional signals representative of the actual positions of said support means and said couch means, means for comparing the respective prescribed position signals with the respective actual position signals to derive control signals, and means for applying the control signals to said support rotation means and said couch translation means for simultaneously rotating and translating said support and couch means to the desired positions, whereby the setup time to set the prescribed positions of said support means and said couch means is minimized, and wherein said couch means is translatable over a locus of points in interference with the locus of points traversable by said support means such that collisions between said couch means and said support means is possible, means for monitoring simultaneous translation of said couch and support means, taking into account the prescribed positional signals for said support and couch means, for determining when said support and couch means are on collision courses and producing an output determinative of the collision course.
Claim 4
Dependent Claim
249 words
In a radiation apparatus, couch means for supporting a patient to receive radiation, radiation source means for directing a beam of radiation onto the patient, rotatable support means for supporting said radiation source, means for rotating said support means in a locus of points about said couch means, means for translating said couch means relative to the locus of points traversable by said support means, means for establishing signals corresponding to prescribed positions of said support means and said couch means, means for generating positional signals representative of the actual positions of said support means and said couch means, means for comparing the respective prescribed position signals with the respective actual position signals to derive control signals, and means for applying the control signals to said support rotation means and said couch translation means for simultaneously rotating and translating said support and couch means to the desired positions, whereby the setup time to set the prescribed positions of said support means and said couch means is minimized, and wherein said couch means is translatable over a locus of points in interference with the locus of points traversable by said support means such that collisions between said couch means and said support means is possible, means for monitoring simultaneous translation of said couch and support means, taking into account the prescribed positional signals for said support and couch means, for determining when said support and couch means are on collision courses and producing an output determinative of the collision course.
Claim 5
Dependent Claim
29 words
The apparatus of claim 1 including, means responsive to the collision determinative output signal for controlling said support rotation means and said couch translation means for averting the collision.
Claim 6
Dependent Claim
70 words
The apparatus of claim 2 wherein said control means responsive to the collision signal for averting the collision includes, means for stopping translation of said support and couch means, and means for controlling said support and couch translating means for translating said support and couch means toward predetermined neutral positions for a given time, and means for causing said support and couch means to resume tracking towards the prescribed positions.
Claim 7
Dependent Claim
21 words
The apparatus of claim 5 wherein said control means for averting the collision includes, computer means programmed to avert the collision.
Claim 8
Dependent Claim
21 words
The apparatus of claim 3 wherein said control means for averting the collision includes, computer means programmed for averting the collision.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |