US4426725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biplanar variable angle X-ray examining apparatus
Assignee: Hologic Inc
•
Filing: 1982-05-07
•
Granted: 1984-01-17
•
Expires: 2002-05-07
Abstract
Abstract X-ray apparatus is shown in which there are two radiological sets, each set including an X-ray tube and radiation receptor (e.g., film holder or image intensifier) and means supporting them on a common radiation axis. The two radiation axes of the respective radiological sets intersect at an isocenter at which the subject of examination, e.g., the human heart, may be located; and at least one set is rotatable on a rotation axis through the isocenter and perpendicular to the radiation axes independently of, and relative to, the radiation axis of the other set. One or both of the sets may be retracted from alignment with the isocenter without disturbing the patient to allow unobstructed access and both sets may be independently rotatable.
Inventors
- 👤 John K. Grady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:07
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/44; A61B6/4429; A61B6/4435; A61B6/4441; A61B6/02; A61B6/022; A61B6/40; A61B6/4007; A61B6/4014
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
135 words
Radiological apparatus for radiographic examination of a subject comprising: a first radiological examining set including first radiation source means, first radiation receptor and two-dimensional image-former means and first support means for holding the first source and receptor means on a first radiation axis; and a second radiological examining set including second radiation source means, second radiation receptor and two-dimensional image-former means and second support means for holding the second source and receptor means on a second radiation axis aligned to intersect the first radiation axis at a common isocenter, wherein the first support means is rotatable independently of the second support means about a rotational axis intersecting the common isocenter; whereby a series of substantially simultaneous radio-graphic examinations can be made on both radiation axes through the subject at variable angles between the radiation axes.
Claim 2
Dependent Claim
135 words
Radiological apparatus for radiographic examination of a subject comprising: a first radiological examining set including first radiation source means, first radiation receptor and two-dimensional image-former means and first support means for holding the first source and receptor means on a first radiation axis; and a second radiological examining set including second radiation source means, second radiation receptor and two-dimensional image-former means and second support means for holding the second source and receptor means on a second radiation axis aligned to intersect the first radiation axis at a common isocenter, wherein the first support means is rotatable independently of the second support means about a rotational axis intersecting the common isocenter; whereby a series of substantially simultaneous radio-graphic examinations can be made on both radiation axes through the subject at variable angles between the radiation axes.
Claim 3
Dependent Claim
18 words
Apparatus according to claim 1 wherein one radiological set is movable through spherical loci concentric with the isocenter.
Claim 4
Dependent Claim
18 words
Apparatus according to claim 1 wherein both radiological sets are movable through spherical loci concentric with the isocenter.
Claim 5
Dependent Claim
15 words
Apparatus according to claim 1 wherein both support means are rotatable independently of each other.
Claim 6
Dependent Claim
23 words
Apparatus according to claim 1, 2, 3 or 4 wherein the radiation means on one support means are tiltable on their support means.
Claim 7
Dependent Claim
22 words
Apparatus according to claim 1, 2, 3 or 4 wherein the radiation means on both support means are tiltable on their supports.
Claim 8
Dependent Claim
15 words
Apparatus according to claim 1 wherein both support means are rotatable on a common axis.
Claim 9
Dependent Claim
31 words
Apparatus according to claim 1 in combination with a table for supporting a subject, the table being tiltable to rotate the subject about the isocenter and a point within the subject.
Claim 10
Dependent Claim
32 words
Apparatus according to claim 1 wherein the support means for one radiation means in one set is movable independently of the support means for the other radiation means in the same set.
Claim 11
Dependent Claim
13 words
Apparatus according to claim 9 wherein the movement is on a reciprocal path.
Claim 12
Dependent Claim
25 words
Apparatus according to claim 9 wherein the movement is reciprocal to a position remote from the isocenter freeing access to a subject at the isocenter.
Claim 13
Dependent Claim
18 words
Apparatus according to claim 11 wherein the reciprocation is parallel to the rotational axis of the radiation means.
Claim 14
Dependent Claim
67 words
Apparatus according to claim 1 wherein the support means for one radiation means in a set is movable independently of the support means for the other radiation means of the same set and includes means guiding the independent movement of the support means on a path from a position of the radiation means in alignment with the common isocenter to a position displaced from the common isocenter.
Claim 15
Dependent Claim
25 words
Apparatus according to claim 9 wherein the suppot means for both radiation means of a set are reciprocally and independently movable in the same direction.
Claim 16
Dependent Claim
28 words
Apparatus according to claim 14 including a room with ceiling and floor portions and tracks for guiding reciprocation of respective radiation means in a set on those positions.
Claim 17
Dependent Claim
24 words
Apparatus according to claim 14 wherein the tracks include stops for aligning the radiation axis of the respective radiation means with the common isocenter.
Claim 18
Dependent Claim
17 words
Apparatus according to claim 15 wherein the radiation axis is aligned at an angle to the tracks.
Claim 19
Dependent Claim
30 words
Apparatus according to claim 9 wherein the support means for one radiation set comprises two arms respectively carrying a radiation source and receptor means, and means reciprocally supporting respective arms.
Claim 20
Dependent Claim
22 words
Apparatus according to claim 18 including motor means for reciprocally driving the two arms for one radiation set independently of each other.
Claim 21
Dependent Claim
21 words
Apparatus according to claim 9 including motor means for driving the two arms for one radiation set independently or interdependently reciprocally.
Claim 22
Dependent Claim
28 words
Apparatus according to claim 1 or 9 wherein the support means for the first radiation set includes a frame and a ring rotatable therein on the rotational axis.
Claim 23
Dependent Claim
24 words
Apparatus according to claim 21 wherein the support means for the second set includes a ring rotatable on the same rotational axis and frame.
Claim 24
Dependent Claim
17 words
Apparatus according to claim 22 including means for driving the rings and their respective radiation sets independently.
References Cited (Backward Citations)
US3809904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |