Installation for x-ray studies, are equipped with a tilting table

 

The invention relates to medical equipment, namely to an apparatus for x-ray examinations, which can be used for fluoroscopy and for obtaining x-ray images. The installation includes an inclined table for the patient, shifting in the horizontal direction of the rack, which is equipped with an x-ray source, with the possibility of displacement in the vertical direction, and the connecting element, which provides connection of the rack and the x-ray source to the device for converting the image provided in the table for the patient. The use of the invention allows the x-rays and get x-rays on a single installation. 9 C.p. f-crystals, 10 ill.

The invention relates to an apparatus for x-ray examinations, which contains a table for the patient, is made tiltable around a horizontal axis, a device for converting image (electro-optical Converter), which is made with the possibility of displacement in the longitudinal direction of the table, above the table, the x-ray source, which is aligned consider the logical investigations, known in practice, for example, the installation company Philips DIAGNOST 120". The x-ray source and the electro-optical Converter for a given installation are located on the carriage, which is made with a possibility of displacement in the longitudinal direction of the table. This setup for x-ray studies has a relatively complex structure, and it is suitable for various methods of research only to a limited extent. Therefore, the aim of the present invention is to develop such a facility for x-ray studies of the type specified above, which is characterized by simple design and at the same time, provides the possibility of more universal application.

The purpose of the invention achieve due to the fact that the x-ray source is mounted on a shift in the horizontal direction of the rack with the possibility of displacement in the vertical direction and can be connected by means of a mechanical connecting element with a table for the patient so that when the tilt table for the patient stand and the x-ray source is displaced so that the distance between the electro-optical transducer and the x-ray source OST genoscope radiation relative to each other.

Thus, the apparatus for x-ray examinations in accordance with the invention includes, in addition to the buffet for a patient with electro-optical Converter, which is designed with the possibility of displacement in the longitudinal direction of the table, a rack, which is made slidable in the horizontal direction and which is equipped with an x-ray source with the possibility of displacement in the vertical direction. The connecting element provides the connectivity table for the patient and an x-ray source with each other so that when the tilt table for the patient hour shifts in a horizontal direction, and the x-ray source is displaced in the vertical direction, the distance between the electro-optical transducer and the x-ray source remains constant and remains aligned with the position of the electro-optical Converter and an x-ray source relative to each other. Using such x-ray equipment can implement any conventional fluoroscopy. Moreover, the apparatus for x-ray examinations in accordance with the image the x images) when the vertical trajectory of the beam. The fact that hour made with the possibility of bias, allows you to use the table for the patient, which is not equipped with a "floating" upper part of the table, and made with the top part of the table is stationary relative to the frame of the table that allows to obtain a much more simple design.

When the connecting element is disconnected from the x-ray source, there are additional possibilities. In the embodiment described in item 2 of the claims, the x-rays can be performed using an x-ray source on a separate Converter image, for example, installed on a wall stand Bucky tray; in this case the trajectory of the beam can be held horizontally and parallel to the direction of displacement of the tripod. An implementation option, disclosed in paragraph 3 of the claims, provides the possibility of adapting the installation to different dimensions of the patient. Additional variant of the implementation disclosed in paragraph 4 of the claims, provides the possibility of obtaining x-ray images when the trajectory of the ray passing horizontally and perpendicular to the longitudinal direction of the table.

An implementation option, opisanie first mode of operation (with rigid connection of the x-ray source with an electron-optical Converter); in the second mode of operation, you can perform linear tomography or images in oblique projection.

Using a variant of the implementation disclosed in paragraph 6 of the claims, it is possible to implement the first and second modes of operation. When the carriage serving as a support device for adjusting the height of the slice (layer), offset (first operation mode), the possible implementation of x-ray and imaging with aperture Bucky tray. However, when the carriage is fixed with respect to the table for the patient, the x-ray source and the electro-optical Converter are shifted in opposite directions. This allows, for example, images in oblique projection. In paragraph 7 of the claims disclosed preferred embodiment of the invention, which provides the ability to change the position of the investigated area during the first mode of operation and the ability to perform linear tomography in the second mode of operation.

In paragraph 8 of the claims taken into account the fact that the device for converting image usually use a separate electro-optical converters for fluoroscopy and image. Thus, mo is/p> In paragraph 9 of the claims disclosed a preferred variant implementation, which can be mechanically simpler and, in addition, more sustainable design. Following an implementation option, disclosed in paragraph 10 of the claims, provides a very simple change from one mode to the other. When the two carriages move at the same speed (or when both the carriage and stationary), you can perform x-rays or pictures with aperture Bucky tray (first operation mode). When the second drive unit is disabled and the first drive unit acts on the carriage that is attached to the connecting element, it is possible to perform a linear tomography. For the two drive devices, you can use a common drive motor, and the above-mentioned engine acts on the drive member through the coupling, which can be taken up or withdrawn from the working state, when the drive element is designed, for example, in the form of a drive shaft.

Hereinafter the invention is described in detail with reference to the drawings, in which: Fig.1 is a front view of the first variant of implementation; Fig.2 - side view mode, take a photo with aperture Bucky tray; Fig.3 - view and layered images; Fig. 5 is a side view of the horizontal trajectory of the beam (in the longitudinal direction of the table; Fig.6 is a side view of the horizontal trajectory of the beam (transversely to the longitudinal direction of the table; Fig.7 - the ability to move a setup for imaging; Fig. 8 is a partial front view of an improved version of the implementation; Fig.9 - the resulting range of movement for imaging; and
Fig. 10 is a partial front view of the next improved version of the implementation.

Installation for x-ray studies, are presented in Fig.1, has three main elements: table 1 for a patient, the rack 2 and the connecting element 3.

The longitudinal beams 12 table frame is fixed on the base 1A of the table 1 for the patient can be rotated around the axis 21. For the formation of the frame as a whole is provided by a cross member 22 (Fig.2), which connect the longitudinal beams with each other. The upper part 10 of the table mounted on the crossbars 22. There are three carriage made with the possibility of displacement in the longitudinal direction of the longitudinal beams 12: carriage 8 for electron-optical image intensifier 7, designed for performing fluoroscopy, the carriage 9 with the moving grating designed for poluchenierazreshenija device 11a, used to adjust the height of the slice, which is hereinafter also referred to as a device for adjusting the cutting height or hinge.

Hour 2 moves along the guide rails 19 and 20, which are provided on the floor and on the ceiling (or wall) and are parallel to the longitudinal direction of the table (in the horizontal position of the upper part of the table). The carriage 18 is attached to the counterweight (not shown) and attached to the rack with the possibility of displacement in the vertical direction. The bracket 4 of the carriage 18 serves as a support source 5 x-ray radiation with megaplatinum collimator 6. The bracket 4 is made to rotate with the rotary support 16 around its horizontal longitudinal axis, and the rotary bearing 16 can be rotated on the carriage 18 about the vertical axis 17.

The connecting element 3 connection bracket 4, the above-mentioned three carriages and table 1 for patient with one another. The connecting element 3 is a bar, but can be used and other devices that provide mechanical connection of the bracket 4 with the carriage. The connecting element 3 is attached to the device 11 for adjusting the height of cut by means of the hinge 13, the height of which is 9 and 8 so when the displacement of the connecting rod with respect to the table for the patient, these carriage is moved along with it. These connection means (11, 11a, 14, 15 and other elements) provide a choice of two different modes of operation that will be described in detail below with reference to the relevant drawings.

In Fig. 2 shows the setup for x-ray studies with the upper part 10 of the table in a horizontal position, in the operation mode, which is used to obtain x-ray images with aperture Bucky tray, and hour shown in the first and second operating positions. The offset between the two working positions can be performed with the drive shaft 28 (Fig.1), thus is the displacement of the carriage 8 and, by means of a connecting element 3, the displacement of the carriages 9 and 11, as well as the offset of the bracket from the stand. Instead of such a drive shaft driven by the respective motor, can also be used chain drive or toothed rack, which interacts with a toothed wheel driven by the engine.

In Fig. 3 presents the setup for x-ray examinations in position for x-rays. In this case, t using a drive motor 31, which through a chain 35, the gears 33 and two guide rollers 34 results in movement of the segment 32 that is attached to the frame 12, 22. In response to the tilting displacement of the connecting element 3 causes the rack to move to the right or to the left, and simultaneously causes the displacement of the carriage 18 with the source 5 of x-ray radiation in the direction of up or down, the distance between the electro-optical device 7 (or 9) to convert the image and the source 5 of x-ray radiation remains unchanged and remains aligned with the position of the electro-optical device 7 (or 9) to convert the image and the source 5 of x-rays relative to each other. When the carriage 8, and thus also of the carriage 9 and 11 are displaced in the longitudinal direction of the table, the x-ray tube moves with them connecting element 3 so that the distance between the electro-optical device 7 (or 9) to convert the image and the source 5 of x-ray radiation remains unchanged and remains aligned position relative to each other optoelectronic device 7 (or 9) to convert the image and the source 5 of x-ray radiation.

Ola by another mode of operation. This mode is implemented, when the carriage 11 is fixed (for example, using brakes or hard lock on the upper longitudinal beam 12 and, consequently, the offset table for the patient's blocked. If the carriage 8 with the electron-optical image intensifier moves, the connecting rod moves with it (using pin 15), while the connecting element 3 bends, turning around a stationary (fixed) axis 15, so that 2 hour offset in the lateral direction. When the carriage 9 with the moving grating is shifted together with the stand by means of pins 14, so it's oblique projection in which the Central beam is always directed to the center of the cassette with the tape provided in the carriage 9 with a moving grate.

If there is a continuous shift of the carriage 9 with a moving grating, made through the actuator 28 so that the connecting element 3 is moved from its illustrated position to the position indicated by the dotted line, during this displacement can be obtained layered the image with a linear blur (linear tomography). When shifting the height of the hinge or point 13 of the connection corresponding to it is quite far down, you can also perform fluoroscopy in oblique projection in which the Central beam enters the center of the electron-optical image intensifier 7.

At that time, as in the second mode of operation, shown in Fig.4, the carriage is fixed on the table 1, three of the carriages 8, 9, 11 are rigidly connected to each other when the first operation mode, as shown in Fig.2 or Fig. 3, so that the displacement of the carriage 8 of the carriage 9 and 11 are shifted by means of the coupling element 3 cause a shift of 2 hours.

When the connecting element 3 is removed from the bracket 4, there are additional possibilities.

As is shown in Fig.5, the rack 2 may be shifted on the table for the patient, and the source 5 of x-ray radiation can be tilted 90oin the rotary support 16 (see Fig.1) what can be done side pictures on a wall tripod (not shown). By use of the carriage 18 (Fig.1) source 5 x-ray radiation can then be shifted in the vertical direction at an arbitrary position, as shown in dotted lines in Fig. 5.

In Fig. 5 also schematically shows the above-mentioned trim. It provides a counterweight 50, which is ravnovesie the n with the possibility of displacement of the rack in the direction opposite to the source 5 of x-ray radiation, the movement of the rack would also be shifted and the counterweight. However, the counterweight is connected to a fixed point 56 by means of the cable 51, which is stationary guide roller 52 mounted on the wall or ceiling, the first roller 53 on the rack, the roller 54 on the carriage 18 and the second roller 55 on the rack 2. When using this layout rollers contrast, it can change its position in space only in the vertical direction, but not in the horizontal direction. This creates the advantage that there is no need for movement and acceleration of the counterweight at offset 2 hours.

In Fig. 6 presents a second opportunity, take a photo in the disconnected state. This possibility occurs when the bracket 4 is tilted around a vertical axis 17 and then rotated 90oaround a horizontal axis. This produces the horizontal trajectory of the beam, which is perpendicular to the longitudinal direction of the table.

In Fig.8 shows a front view of an improved version of the embodiment of the invention; essentially, the figure shows only the table for the patient.

While in the retku 11, and electron-optical image intensifier 7 is based on a separate carriage 8, in the embodiment shown in Fig.8, are provided with a common carriage 40 for device 11a, intended to regulate the cutting height, and for electron-optical image intensifier 7, the total carriage 40 provides a more robust (stable) direction of the device for adjusting the height of cut. On the bottom left of the lower longitudinal beams 12 is provided for driving the carriage 41, designed to tilt or movement of the connecting element 3, and this drive the carriage acts on the lower end of the connecting element via connecting bolts 15, and provides a linear motion in the longitudinal direction of the table. The drive shaft 42 (or chain drive or similar) acts on the drive carriage 41, the system behavior depends on whether the attached carriage 40 to the connecting element 3 (strong connection at point a) or to the longitudinal beam 12 (weak connection at point b on the longitudinal beam 12), so that the carriage 40 can not be removed.

When the carriage 40 is attached to the connecting element 3 (at point a), the carriage 40, the connecting element 3 and AI with Fig.2 or Fig.3 (first operation mode). When the carriage 40 is attached to a point In, that is fixed relative to the longitudinal beams 12, the drive carriage through the connective (coupling) bolts 15 causes rotation of the connecting element 3 around the hinge 13 in accordance with Fig.4. The advantage lies in the fact that there is a simultaneous shift of electron-optical image intensifier 7 (in this case, the carriage 40 is fixed), so there is no need for accelerating or retarding the efforts generated by the actuator 42 for this purpose. This is because for layered images (layer-by-layer exposure) is not required electron-optical image intensifier 7.

The next advantage is the presence of enlarged area within which can be performed layer-by-layer images.

In Fig.7 schematically shows the details of the installation shown in Fig.1. Obviously, to obtain a layered imagery device 11a to adjust the height of the slice (layer) may be shifted in position next to the head or legs, shown in Fig.7, it is necessary to avoid collision between the electron-optical image intensifier 7 or carriage on which it is based, and cross-beams 22 at the end of the table for patientce head is located, or the end where the legs are not available for layer-by-layer exposure; this is a disadvantage, especially in the case where, as indicated, the upper part 10 of the table cannot be displaced relative to the frame.

In Fig.9 shows a detail of a variant of implementation shown in Fig. 8. As can be seen, the end position, at both ends can be substantially further apart than in Fig.7, since there is no need to shift fairly large electron-optical image intensifier 7 and the carriage 40, which serves as its support, and the need to move only a relatively narrow drive the carriage 42, which is routed under the left bottom longitudinal beam. Thus, significantly increases the portion of the patient's body, which can be obtained layered image.

In Fig. 10 presents an improved version of the implementation shown in Fig.8. The improvement consists in that the carriage 40 can be moved with the drive shaft 43 (or chain drive, or the rack). In this case, the following modes are possible.

During the first mode of operation of the actuator 42 to the carriage 41 and the actuator 43 for carriage 40 is brought into action so that the two carriages 40 and 41 are shifted in h is transformed into a lateral direction and causes a shift hours with him. In this mode you can take pictures with aperture Bucky tray in accordance with Fig.2 or fluoroscopy in accordance with Fig.3, in this case, the x-ray source is displaced in parallel to the respective longitudinal direction of the table.

In the second mode of operation does not actuate the drive shaft 43, that is, the carriage 40 does not move relative to the longitudinal beam 12, while the drive shaft 42 acts on the carriage 41. In the coupling element 3 is rotated around the axis 13 of rotation and is performed layer-by-layer exposure in accordance with Fig.4 or Fig.9.

The advantage of this variant implementation is that there is no need to commit various carriages or the coupling element 3 relative to each other depending on the mode, as in the variants of the implementation shown in Fig.1 and 8. In addition, switching between the two modes of operation can be performed simply by means of switches provided in corresponding locations. In principle, two drive shafts 42 and 43 may be provided with a common drive motor, and the above-mentioned engine acts on the drive shaft 43 through the coupling, which can Biruta operate synchronously (first operation mode), or actuate only the second actuator 42 (second operation mode).


Claims

1. Installation for x-ray studies containing a table (1) for the patient, which is made tiltable around a horizontal axis (21), the device (7, 9) for converting the image made with the possibility of displacement in the longitudinal direction of the table and above the table source (5) x-ray radiation, which is aligned with the device to convert an image, characterized in that the spring (5) x-ray radiation has to move in the horizontal direction of the rack (2) with the possibility of displacement in the vertical direction and by means of mechanical connecting element (3) can be attached to the table for the patient so that when the tilt table (1) for the patient stand (2) and source (5) x-rays are shifted so that the distance between the device (7, 9) to convert the image and source (5) x-ray emission remains unchanged and remains aligned position of the device (7, 9) to convert the image and source (5) x-ray radiation from each of the IR (5) x-ray radiation is mounted on a horizontal bracket (4), which is made tiltable around its Central axis and attached to the connecting element (3) with the possibility of disconnecting.

3. Installation for x-ray studies on p. 2, characterized in that the bracket (4) is attached to the carriage (18), which is made with a possibility of displacement in the vertical direction on the rack (2).

4. Installation for x-ray studies on p. 3, characterized in that the bracket (4) is attached to the carriage (18) with possibility of inclination relative to the vertical axis (17).

5. Installation for x-ray studies on p. 1, characterized in that is provided by the connecting means (11, 11a, 14, 15; a, b; 42, 43) through which the connecting element (3) creates a rigid connection between the source (5) x-ray radiation and a device (7, 9) for converting the image in the first mode of operation and through which the connecting element (3) ensure that offset source (5) x-ray emission and at least part (9) of the device (7, 9) to convert the image in opposite directions when the second operation mode.

6. Installation for x-ray studies on p. 5, characterized cadinene to the carriage (11), made with the possibility of displacement in the longitudinal direction of the table (1) for the patient, and the connecting element (3) is pivotally attached to the device (11a) to regulate the cutting height at the point (15) of the connection, which is provided to adjust the height, and the carriage is made with the possibility of free displacement in the first mode of operation and fixation with respect to the table (1) for the patient when the second operation mode.

7. Installation for x-ray studies on p. 6, characterized in that the table (1) for the patient contains a drive unit (28) which acts on the carriage (8), made with the possibility of displacement in the longitudinal direction of the table for the patient, and the connecting element (3) attached to the carriage (8) on the distance from the point (15) of the connection.

8. Installation for x-ray studies on p. 5, characterized in that the device for converting the image contains a Converter (7) image for x-ray and the Converter (9) images for images that are installed on the respective carriages (8, 9) that are attached to the connecting element (3) and is executed with a possibility of displacement in the longitudinal direction of the table for the patient.

9. Mouths for fluoroscopy and a device (11) for adjusting the height of cut are placed on a common carriage (40), table (10) for a patient who has a first drive unit (42) which acts on the carriage (41) made with the possibility of displacement in the longitudinal direction of the table for the patient, the connecting element (3) attached to the carriage at a distance from the point (15) of the connection, and the connecting means (3, 11a, And, C) provide connection of the two carriages (40, 41) to each other when the first operation mode and lock the carriage (40) to the inverter (7) image for x-rays with respect to the table (10) for the patient when the second operation mode.

10. Installation for x-ray studies on p. 9, characterized in that it contains a second drive unit (43) which acts on the carriage (40) with image Converter for x-rays, and control of the two drive devices (42, 43) is carried out so that the two carriages (40, 41) move with the same speed and in the same direction when the first operation mode and the second mode of operation of the second drive (42) the device is disabled.

 

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