X-ray or gamma ray systems or devices – Source support – Including movable source
Patent
1997-03-26
1998-11-10
Porta, David P.
X-ray or gamma ray systems or devices
Source support
Including movable source
378193, A61B 600
Patent
active
058355570
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an apparatus comprising a first X-ray image system and a second X-ray image system forming an X-ray image unit.
In the employment of apparatuses of the above type for, for example, fluoroscopy of a patient, there is a need to be able to adapt the adjustment position of the apparatus after changes in the orientation of those organs in the process of being exposed to fluoroscopy. In, for example, a spinal examination, attempts are made to orient the plane of fluoroscopy at a right angle to the spine. Since the spine curves particularly at the lower lumbar region, it is necessary that the corresponding adaptation can be made to the orientation of the plane of fluoroscopy. Also in the examination of and surgical intervention in the region of the neck of the femur, there is a corresponding need to be able readily to alter the orientation of the plane of fluoroscopy.
There are also needs in many contexts for a mobile apparatus for, for example, fluoroscopy, in which the apparatus is disposed to be placed so as to surround a bed with the patient recumbent in the bed.
The present invention relates to an apparatus in which the above-indicated needs are satisfied. This is put into effect by means of the technique.
In one embodiment, at least one of the interconnection devices of the apparatus includes at least one annular-like peripheral surface which co-operates with a journal in which the interconnection device is displaceable in relation to the carrier means of the apparatus in a circumferential direction of the annular peripheral surface. Hereby, the X-ray image unit, and thereby the X-ray image systems will be rotated in the plane which is formed through the centre axes of the rays.
In a further embodiment, each respective interconnection device is journalled in a path along which the interconnection device is displaceable, this path having substantially vertical orientation.
This arrangement compensates for the displacement in the lateral direction on alteration of the inclination of the plane which passes through the centre axes of the rays.
Further expedient embodiments of the present invention are also dis- closed in the appended claims.
The present invention will now be described in greater detail hereinbelow, with reference to a number of drawing figures, in which:
FIG. 1 is a side elevation of an apparatus according to the invention;
FIG. 2 shows the apparatus according to FIG. 1 seen from one edge;
FIG. 3 is a perspective view of a second embodiment of the apparatus according to the invention; and
FIG. 4 is a view corresponding to that of FIG. 3 with the X-ray image unit of the apparatus in an angled position in relation to the vertical plane.
FIGS. 1 and 2 show a first embodiment of an apparatus according to the invention. The apparatus includes a first X-ray image system 10 and a second X-ray image system 20 each one comprising two units 11,21 and 13,23, respectively. The one unit 11,21 forms a device 11,21 provided with X-ray tubes for emitting X-rays, and the other unit 13,23 forms a radiation receiving device 13,23 located in the direction 12,22 of the radiation. Each one of the two X-ray image systems 10,20 thus includes a device 11,21 for emitting X-rays and a device 13,23 for receiving X-rays.
Each respective radiation receiving device 13,23 is disposed, on received radiation, to emit signals which are electrically transmitted via leads 72 or in wireless mode via a transmitter (not shown) to a receiver unit 71, generally in the form of a TV-monitor 71. The signals are stored in the receiver unit and/or are reproduced as an image of an irradiated object which is located between those devices which emit the X-rays and those devices which receive them. The centre axes 12 of the radiation for the first X-ray image system is substantially at right angles to the centre axis 22 of the rays of the second X-ray image system 20. The point of intersection between the centre axes of the rays carries reference numeral 24.
Both of the X-ray image systems 10,20 are kept in mutu
REFERENCES:
patent: 4150297 (1979-04-01), Borggren
patent: 4209706 (1980-06-01), Nunan
patent: 4961214 (1990-10-01), Van Endschot et al.
patent: 5038371 (1991-08-01), Janssen et al.
patent: 5095501 (1992-03-01), Kobayashi
patent: 5367554 (1994-11-01), Kobayashi et al.
patent: 5386453 (1995-01-01), Harrawood et al.
patent: 5515416 (1996-05-01), Diczek et al.
Porta David P.
Presta Frank P.
Presta Joseph S.
Swemac Orthopaedics AB
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