CA1231786A - Digital x-ray stand - Google Patents
Digital x-ray standInfo
- Publication number
- CA1231786A CA1231786A CA000473038A CA473038A CA1231786A CA 1231786 A CA1231786 A CA 1231786A CA 000473038 A CA000473038 A CA 000473038A CA 473038 A CA473038 A CA 473038A CA 1231786 A CA1231786 A CA 1231786A
- Authority
- CA
- Canada
- Prior art keywords
- support
- axis
- radiation
- rotation
- arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
- A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
- A61B6/4441—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure the rigid structure being a C-arm or U-arm
Abstract
ABSTRACT OF THE DISCLOSURE
An X-ray tube and receptor are held on opposite ends of a two-limbed carriage mounted on a sliding arm. The arm is carried on a rotating support, the arm extending parallel to the rotational axis of the support. The two-limbed carriage pivots on the arm about a second axis perpendicular to the rotational axis and to a radiation axis extending between the X-ray tube and receptor.
An X-ray tube and receptor are held on opposite ends of a two-limbed carriage mounted on a sliding arm. The arm is carried on a rotating support, the arm extending parallel to the rotational axis of the support. The two-limbed carriage pivots on the arm about a second axis perpendicular to the rotational axis and to a radiation axis extending between the X-ray tube and receptor.
Description
~.~3~
Stands :Eor rotatively and rec:iprocally supporting X-ray tubes and X-ray receptors on opposite sides of a patient or other radiog-raphic subject are exemplified in the prior art by United States patent 2,818,510 (Verse);
3,281,598 (Hollstein) and 3,892,967 (Grady) and by copending Canadian appiication Serial No. ~27,610 of John ~. Grady, filed May 6, 1983. 'i'ilese X-ray stands are useful for some types of radiograpnic examinations, but there is a need for an X-ray stand allowing better unilateral access to the patient, and it is one object of the present invention to provide such a stand.
A further object is to provide a stand which also controls positioning of the subject with reference to the stand.
According to the invention radiological apparatus for examination of a subject comprises a base; a support mounted on the base for rotation about a first axis; and an arm on the support extending parallel to the first rotation axis; a two-limbed carriage with limbs extending to positions on opposite sides of the first rotation axis, the limbs holding radiation source means and radiation receptor means respectively on a radiation axis;
and bearing means mounting the carriage on the arm for rotation about a second rotation axis intersecting the first rotation axis, whereby rotation of the support and arm about the first axis and the two-limbed carriage about the second axis allow radiation of a subject from substantially throughout spherical loci around the subject while maintaining the angular relation of the radiation means to the rotational axis.
The invention will now be described in greater detail with reference to the accompanying drawings, in which:
Figure 1 is an isometric view of an X-ray stand according to the invention; and Figure 2 is an end elevation of the stand partly broken away.
The X-ray s-tand shown in ~igures 1 and 2 comprises a base 1 on which is fixed an outer ring 2. A front ring 3 and a rear ring 4 rotate within the outer ring 2 about an axis Al by manual or motor drive. Extending radially inwardly from the rear ring 4 is a pedestal 6 bearing a radiation transparent table T for a patient or other subject at a position P above the table. The table extends and is longitudinally adjustable parallel to the rotation axis Al. Fixed to and extending at a right angle from the front face of front ring 3, parallel to the rotation axis Al, is a rectangular sleeve 8 in which an arm 9 slides preferably by motor drive. The outer end of the arm is connected to a two-limbed carriage 10 of C-shape or U-shape, by a rotary bearing 11 which has an aperture 12 on its axis A2 for a purpose to be described.
The two-limbed carriage 1~ carries an X-ray tube X at one end and an X-~ay receptor R at its opposite end, the tube and receptor being aligned on a radiation axis A3 intersecting the rotation axes Al and A2 at an isocenter C
somewhat above the table T and within the patient position P.
On the X-ray tube limb 10X of the carriage 10 are two rotating, X-ray opaque disks Dl and D2 with apertures Iransmitting a moving fan-shaped beam of X-rays, described in United States patent No. 4,315,146 and Canadian patent application Serial No. 440,866, filed on November 9, 1983 in the names of John K. Grady and Richard E. Rice, which has the advantage of reducing X-ray exposure of the patient. The X-ray receptor R beyond the patient on the opposite receptor arm 10R of the carriage 10 preferably comprises a scintillation screen R converting received X-rays into a secondary light image.
The light image is reflected by a mirror M to a lens L. The lens L focusses the light on the input face of an image intensifier I coupled to a video tube VT
generating digital video signals corresponding to the secondary image at its ~'3~
output terminals tl to t8 for connection to data processing equipment and video displays, for example. Between the lens L and image intensi:fier I is a third rotating light masking disk D3 with an aperture synchronized with those of the X-ray opaque disks Dl and D2.
The radiation set of X-ray tube and receptor can be angulated around the isocenter C on spherical loci by rotation of the :front ring 3 about the ring rotation axis Al, and by rotation of carriage 10 about th0 two-limbed carriage axis A2. The carriage 10 can additionally be reciprocated parallel to the ring rotation axis Al without altering the angulation by means of slidable arm 9.
The present structure affords rotation of the radiation source means X and receptor R about both the first axis Al and second axis A2 for radiation of a subject from subs~antially throughout spherical loci around the subject position at the isocenter C.
The aperture 12 along the carriage axis A2 is of a size to allow radiation therethrough between a second set of an X-ray tube X* and receptor R* at location shown in Figure 1 on the axis A2.
It should be understood that the present disclosure is for the purpose o~ illustration only and that this invention includes all modifications and equivalents which fall within the scope of the appended claims.
Stands :Eor rotatively and rec:iprocally supporting X-ray tubes and X-ray receptors on opposite sides of a patient or other radiog-raphic subject are exemplified in the prior art by United States patent 2,818,510 (Verse);
3,281,598 (Hollstein) and 3,892,967 (Grady) and by copending Canadian appiication Serial No. ~27,610 of John ~. Grady, filed May 6, 1983. 'i'ilese X-ray stands are useful for some types of radiograpnic examinations, but there is a need for an X-ray stand allowing better unilateral access to the patient, and it is one object of the present invention to provide such a stand.
A further object is to provide a stand which also controls positioning of the subject with reference to the stand.
According to the invention radiological apparatus for examination of a subject comprises a base; a support mounted on the base for rotation about a first axis; and an arm on the support extending parallel to the first rotation axis; a two-limbed carriage with limbs extending to positions on opposite sides of the first rotation axis, the limbs holding radiation source means and radiation receptor means respectively on a radiation axis;
and bearing means mounting the carriage on the arm for rotation about a second rotation axis intersecting the first rotation axis, whereby rotation of the support and arm about the first axis and the two-limbed carriage about the second axis allow radiation of a subject from substantially throughout spherical loci around the subject while maintaining the angular relation of the radiation means to the rotational axis.
The invention will now be described in greater detail with reference to the accompanying drawings, in which:
Figure 1 is an isometric view of an X-ray stand according to the invention; and Figure 2 is an end elevation of the stand partly broken away.
The X-ray s-tand shown in ~igures 1 and 2 comprises a base 1 on which is fixed an outer ring 2. A front ring 3 and a rear ring 4 rotate within the outer ring 2 about an axis Al by manual or motor drive. Extending radially inwardly from the rear ring 4 is a pedestal 6 bearing a radiation transparent table T for a patient or other subject at a position P above the table. The table extends and is longitudinally adjustable parallel to the rotation axis Al. Fixed to and extending at a right angle from the front face of front ring 3, parallel to the rotation axis Al, is a rectangular sleeve 8 in which an arm 9 slides preferably by motor drive. The outer end of the arm is connected to a two-limbed carriage 10 of C-shape or U-shape, by a rotary bearing 11 which has an aperture 12 on its axis A2 for a purpose to be described.
The two-limbed carriage 1~ carries an X-ray tube X at one end and an X-~ay receptor R at its opposite end, the tube and receptor being aligned on a radiation axis A3 intersecting the rotation axes Al and A2 at an isocenter C
somewhat above the table T and within the patient position P.
On the X-ray tube limb 10X of the carriage 10 are two rotating, X-ray opaque disks Dl and D2 with apertures Iransmitting a moving fan-shaped beam of X-rays, described in United States patent No. 4,315,146 and Canadian patent application Serial No. 440,866, filed on November 9, 1983 in the names of John K. Grady and Richard E. Rice, which has the advantage of reducing X-ray exposure of the patient. The X-ray receptor R beyond the patient on the opposite receptor arm 10R of the carriage 10 preferably comprises a scintillation screen R converting received X-rays into a secondary light image.
The light image is reflected by a mirror M to a lens L. The lens L focusses the light on the input face of an image intensifier I coupled to a video tube VT
generating digital video signals corresponding to the secondary image at its ~'3~
output terminals tl to t8 for connection to data processing equipment and video displays, for example. Between the lens L and image intensi:fier I is a third rotating light masking disk D3 with an aperture synchronized with those of the X-ray opaque disks Dl and D2.
The radiation set of X-ray tube and receptor can be angulated around the isocenter C on spherical loci by rotation of the :front ring 3 about the ring rotation axis Al, and by rotation of carriage 10 about th0 two-limbed carriage axis A2. The carriage 10 can additionally be reciprocated parallel to the ring rotation axis Al without altering the angulation by means of slidable arm 9.
The present structure affords rotation of the radiation source means X and receptor R about both the first axis Al and second axis A2 for radiation of a subject from subs~antially throughout spherical loci around the subject position at the isocenter C.
The aperture 12 along the carriage axis A2 is of a size to allow radiation therethrough between a second set of an X-ray tube X* and receptor R* at location shown in Figure 1 on the axis A2.
It should be understood that the present disclosure is for the purpose o~ illustration only and that this invention includes all modifications and equivalents which fall within the scope of the appended claims.
Claims (17)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. According to the invention radiological apparatus for examination of a subject comprises:
a base;
a support mounted on the base for rotation about a first axis; and an arm on the support extending parallel to the first rotation axis;
a two-limbed carriage with limbs extending to positions on opposite sides of the first rotation axis, the limbs holding radiation source means and radiation receptor means respectively on a radiation axis; and bearing means mounting the carriage on the arm for rotation about a second rotation axis intersecting the first rotation axis, whereby rotation of the support and arm about the first axis and the two-limbed carriage about the second axis allow radiation of a subject from substantially throughout spherical loci around the subject while maintaining the angular relation of the radiation means to the rotational axis.
a base;
a support mounted on the base for rotation about a first axis; and an arm on the support extending parallel to the first rotation axis;
a two-limbed carriage with limbs extending to positions on opposite sides of the first rotation axis, the limbs holding radiation source means and radiation receptor means respectively on a radiation axis; and bearing means mounting the carriage on the arm for rotation about a second rotation axis intersecting the first rotation axis, whereby rotation of the support and arm about the first axis and the two-limbed carriage about the second axis allow radiation of a subject from substantially throughout spherical loci around the subject while maintaining the angular relation of the radiation means to the rotational axis.
2. Apparatus according to claim 1 wherein the support is rotatable through at least 180 degrees for reversal of the radiation means.
3. Apparatus according to claim 1 wherein the radiation axis intersects the first and second rotation axes.
4. Apparatus according to claim 3 wherein the carriage is pivoted on the arm for adjustment of the angle of intersection of the rotation and radiation axes.
5. Apparatus according to claim 1 wherein the support is a ring rotatable through 360 degrees on the base.
6. Apparatus according to claim 1 including a second support on the base rotating on the same axis as the first support and mounting a radiation transparent support for a subject under radiological examination.
7. Apparatus according to claim 1 including a second support on the base and a subject table on the second support.
8. Apparatus according to claim 7 wherein the second support is rotatable on the same axis as the first support.
9. Apparatus according to claim 1 wherein the second rotation axis is normal to the arm.
10. Apparatus according to claim 9 wherein the bearing means has an aperture therethrough concentric with the second rotation axis, the aperture being of size to transmit X-radiation therethrough.
11. Apparatus according to claim 1 including means slidingly attaching the arm to the support for reciprocation parallel to the first rotation axis.
12. Apparatus according to claim 1 including means slidingly attaching the arm to the support for reciprocation parallel to the first rotation axis.
13. Apparatus according to claim 12 wherein the support is rotatable through at least 180 degrees for reversal of the radiation means.
14. Apparatus according to claim 12 wherein the radiation axis intersects the first and second rotation axes.
15. Apparatus according to claim 12 wherein the support is a ring rotatable through 360 degrees on the base.
16. Apparatus according to claim 12 including a second support on the base rotating on the same axis as the first support and mounting a radiation transparent support for a subject under radiological examination.
17. Apparatus according to claim 12 including a second support on the base and a subject table on the second support.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US575,204 | 1984-01-30 | ||
| US06/575,204 US4649560A (en) | 1984-01-30 | 1984-01-30 | Digital X-ray stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1231786A true CA1231786A (en) | 1988-01-19 |
Family
ID=24299361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000473038A Expired CA1231786A (en) | 1984-01-30 | 1985-01-29 | Digital x-ray stand |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4649560A (en) |
| CA (1) | CA1231786A (en) |
| DE (1) | DE3500759A1 (en) |
| FR (1) | FR2558716A1 (en) |
| GB (1) | GB2154410B (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5464013A (en) * | 1984-05-25 | 1995-11-07 | Lemelson; Jerome H. | Medical scanning and treatment system and method |
| US5165410A (en) * | 1987-05-15 | 1992-11-24 | Medical & Scientific Enterprises, Inc. | Position indicating system for a multidiagnostic scanner |
| USRE34511E (en) * | 1987-05-15 | 1994-01-18 | Hologic, Inc. | Method of radiologically scanning the spine for measuring bone density |
| US6230036B1 (en) | 1987-05-15 | 2001-05-08 | Hologic, Inc. | System for radiologically scanning the spine for measuring bone density |
| US4986273A (en) * | 1989-08-07 | 1991-01-22 | Medical & Scientific Enterprises, Inc. | Method of radiologically scanning the spine for measuring bone density |
| US5572998A (en) * | 1987-05-15 | 1996-11-12 | Hologic, Inc. | Method of scanning the spine of a patient to determine bone density along two different axes |
| FR2628311A1 (en) * | 1988-03-08 | 1989-09-15 | Thomson Cgr | MAMMOGRAPHER |
| US5386453A (en) * | 1992-05-12 | 1995-01-31 | Diasonics, Inc. | Imaging and treatment apparatus having a floor-mounted guiding track |
| US6059455A (en) * | 1993-11-22 | 2000-05-09 | Hologic, Inc. | Portable X-ray bone densitometry system |
| US5748705A (en) * | 1993-11-22 | 1998-05-05 | Hologic Inc. | X-ray bone densitometry |
| US5838765A (en) * | 1993-11-22 | 1998-11-17 | Hologic, Inc. | Whole-body x-ray bone densitometry using a narrow-angle fan beam, including variable fan beam displacement between scan passes |
| US5432834A (en) * | 1993-11-22 | 1995-07-11 | Hologic, Inc. | Whole-body dual-energy bone densitometry using a narrow angle fan beam to cover the entire body in successive scans |
| US6217214B1 (en) | 1993-11-22 | 2001-04-17 | Hologic, Inc. | X-ray bone densitometry apparatus |
| US5687211A (en) * | 1993-11-22 | 1997-11-11 | Hologic, Inc. | Bone densitometry scanning system and method for selecting scan parametric values using x-ray thickness measurement |
| US5715820A (en) * | 1995-06-06 | 1998-02-10 | Hologic, Inc. | X-ray bone densitometry using multiple pass scanning with image blending |
| GB9520564D0 (en) * | 1995-10-07 | 1995-12-13 | Philips Electronics Nv | Apparatus for treating a patient |
| US6984066B2 (en) * | 2003-08-25 | 2006-01-10 | Borom Andrew H | Attachable surgical table |
| WO2006064402A2 (en) * | 2004-12-17 | 2006-06-22 | Koninklijke Philips Electronics, N.V. | Gantry system |
| US7298821B2 (en) * | 2005-12-12 | 2007-11-20 | Moshe Ein-Gal | Imaging and treatment system |
| US11058892B2 (en) | 2017-05-05 | 2021-07-13 | Zap Surgical Systems, Inc. | Revolving radiation collimator |
| CN108401421B (en) | 2017-09-06 | 2022-12-20 | 睿谱外科系统股份有限公司 | Self-shielding integrated control radiosurgery system |
| US11684446B2 (en) | 2019-02-27 | 2023-06-27 | Zap Surgical Systems, Inc. | Device for radiosurgical treatment of uterine fibroids |
| CN115177477B (en) * | 2022-08-31 | 2022-12-13 | 张家港市德仁科教仪器设备有限公司 | Stainless steel dissection table with identification monitoring function |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1573571A (en) * | 1924-03-28 | 1926-02-16 | Pohl Ernst | Table for X-ray transradiation |
| US2818510A (en) * | 1953-07-23 | 1957-12-31 | Philips Corp | Diagnostic x-ray device |
| GB769447A (en) * | 1954-07-22 | 1957-03-06 | Philips Nv | Improvements in or relating to diagnostic x-ray apparatus |
| US3281598A (en) * | 1965-11-19 | 1966-10-25 | Picker X Ray Corp Waite Mfg | Overhead support for a vertically and rotatably movable x-ray tube support arm and cooperating tiltable x-ray table |
| FR1566262A (en) * | 1968-01-16 | 1969-05-09 | ||
| FR2054492B1 (en) * | 1969-07-16 | 1974-06-14 | Radiologie Cie Gle | |
| FR2098728A5 (en) * | 1970-07-24 | 1972-03-10 | Philips Massiot Mat Medic | |
| SE347823B (en) * | 1970-12-04 | 1972-08-14 | Elema Schoenander Ab | |
| FR2183387A5 (en) * | 1972-05-05 | 1973-12-14 | Radiologie Cie Gle | |
| DE2608461A1 (en) * | 1976-03-01 | 1977-09-15 | Siemens Ag | X-RAY EXAMINER |
| DK142395B (en) * | 1978-06-09 | 1980-10-27 | N R T Nordisk Roentgen Teknik | X-ray apparatus with moving patient bed and movable radiation source and image amplifier. |
| US4315146A (en) * | 1979-08-17 | 1982-02-09 | The Research Foundation Of State University Of New York | Process and apparatus for scatter reduction in radiography |
| US4426725A (en) * | 1979-08-20 | 1984-01-17 | Grady John K | Biplanar variable angle X-ray examining apparatus |
| NL8102286A (en) * | 1981-05-11 | 1981-07-01 | Philips Nv | MEDICAL DEVICE. |
| US4534051A (en) * | 1982-12-27 | 1985-08-06 | John K. Grady | Masked scanning X-ray apparatus |
| US4541108A (en) * | 1984-01-30 | 1985-09-10 | John K. Grady | X-Ray apparatus with tilting table |
-
1984
- 1984-01-30 US US06/575,204 patent/US4649560A/en not_active Expired - Lifetime
-
1985
- 1985-01-11 DE DE19853500759 patent/DE3500759A1/en not_active Withdrawn
- 1985-01-17 GB GB08501151A patent/GB2154410B/en not_active Expired
- 1985-01-29 FR FR8501190A patent/FR2558716A1/en not_active Withdrawn
- 1985-01-29 CA CA000473038A patent/CA1231786A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2154410A (en) | 1985-09-04 |
| US4649560A (en) | 1987-03-10 |
| GB8501151D0 (en) | 1985-02-20 |
| GB2154410B (en) | 1987-10-28 |
| DE3500759A1 (en) | 1985-08-08 |
| FR2558716A1 (en) | 1985-08-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |