JP2005040495A - Surgical x-ray apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid excess exposure of a subject (a patient) while shortening time required for imaging to shorten a medical treatment time. <P>SOLUTION: When operating a C-shaped arm to be fixed in a first or second position for fluoroscopic photographing of an operated part or the like, imaging conditions are set by a circular diaphragm key 25, a parallel diaphragm key 26, a rotating operation key 27, an image rotating operation key 28 and an image reversing key 29, and in this state, a first or second setting key 30 or 31 is put in long pressing operation to store the imaging conditions set in the first position or second position, in an imaging condition storage means 32. When changed and fixed into the first or second position afterwards, each of the respective keys 25, 26, 27, 28, 29 can be automatically operated to obtain the imaging conditions set in the first or second position, by an imaging condition resetting means 33 following the pressing of the first or second setting key 30 or 31. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a surgical X-ray apparatus.

  The surgical X-ray apparatus is provided with a C-arm that can be displaced three-dimensionally in the main body of the apparatus to change the relative position with the subject. X-rays are applied to the subject at one end of the C-arm. An X-ray tube to be irradiated is provided at the other end with an X-ray detector for receiving X-rays transmitted through the subject, and image processing means for processing image data from the X-ray detector, and the image processing means And image display means for outputting and displaying the processed image data. (For example, refer to Patent Document 1).

  When it is necessary to see and photograph the surgical site from two or more directions during imaging such as surgery, an operator such as an operator or a nearby assistant frequently operates the C-arm, and sees and photographs from at least two directions. Repeatedly.

In addition, as described above, every time the fluoroscopic / photographing direction changes, the imaging conditions such as the X-ray condition of the X-ray tube, the movable aperture condition, the TV rotation condition (image rotation position), and the image processing condition are reset. After re-setting the imaging conditions, exposure is performed on a trial basis to determine whether imaging is performed appropriately.
JP 2001-43994 A

  However, in the conventional case, every time the fluoroscopy / photographing direction is changed, the imaging conditions such as the X-ray condition of the X-ray tube, the movable aperture condition, the TV rotation condition (image rotation position), and the image processing condition must be set repeatedly. In other words, there is a drawback in that it takes time for imaging and the medical time becomes long.

  In addition, since the test exposure is performed every time the imaging conditions are reset, the exposure X-ray dose to the subject (patient) increases.

  The present invention has been made in view of the above points, and is capable of shortening the time required for imaging to shorten medical time and avoiding excessive exposure to a subject (patient). With the goal.

  In order to achieve the above object, the surgical X-ray apparatus according to the first aspect of the present invention has the following configuration.

  That is, a C-type arm provided in the apparatus main body so as to be three-dimensionally displaceable in order to change a relative position with the subject, and an X-ray is irradiated on the subject provided on one end side of the C-type arm. An X-ray tube, an X-ray detector that is provided on the other end of the C-arm and receives X-rays transmitted through the subject, and an image processing means that processes image data from the X-ray detector; Image display means for outputting and displaying image data processed by the image processing means, and at least one of X-ray conditions, movable aperture conditions, TV rotation conditions (image rotation positions), and image processing conditions of the X-ray tube Imaging condition setting means for setting imaging conditions, imaging condition storage means for storing imaging conditions set by the imaging condition setting means, and imaging conditions for reading and resetting the imaging conditions stored in the imaging condition storage means With resetting means It is characterized in that.

  The X-ray conditions of the X-ray tube are the tube voltage and tube current of the X-ray tube. In addition, when the tube voltage and the tube current are specified for each region of interest, and the region of interest is selected and set, and the corresponding tube voltage and tube current are set, it is the region of interest.

  The movable diaphragm conditions are a parallel diaphragm, a circular diaphragm, and a compensation filter.

  The TV rotation condition (image rotation position) is a rotation angle for rotating the camera provided in the image intensifier so that the operator can easily see it.

  The image processing conditions are up and down (back and front) and left and right for inverting the display image.

(Action / Effect)
According to the configuration of the surgical X-ray apparatus of the first aspect of the invention, in order to see and image the surgical site from two or more directions, the C-arm is operated and fixed at a plurality of positions. When setting the imaging conditions, the set imaging conditions are stored, and then the corresponding imaging conditions are set by operating the imaging condition resetting means when the position of the C-arm is fixed. can do.

  Accordingly, once the imaging condition is set at each position where the C-arm is fixed, the imaging condition can be reset only by an operation on the imaging condition resetting means, so that it is not necessary to reset the imaging condition. In addition, it is possible to shorten the time required for imaging and shorten the medical time, and avoid unnecessary exposure to the subject (patient).

  According to a second aspect of the present invention, in the surgical X-ray apparatus according to the first aspect, when the imaging condition is set by the arm position detecting means for detecting the position of the C-arm and the imaging condition setting means, the imaging condition is set. Arm position storage means for storing the position of the C-type arm detected by the arm position detection means, and the position of the C-type arm detected by the arm position detection means are the positions stored by the arm position storage means. And resetting means for outputting a resetting signal and performing resetting by the imaging condition resetting means.

(Action / Effect)
According to the configuration of the surgical X-ray apparatus of the invention according to claim 2, as the C-type arm is fixed at the position where the imaging condition is set, the position is detected by the arm position detecting means, and the position corresponds to the position. The imaging conditions can be automatically reset by the resetting means, and the manual resetting operation can be eliminated, so that the labor required for imaging can be further reduced and the medical time can be further shortened.

  According to the configuration of the surgical X-ray apparatus of the first aspect of the present invention, in order to see through and photograph the surgical site from two or more directions, the C-arm is operated and fixed at a plurality of positions. When setting the imaging conditions, the set imaging conditions are stored, and then the corresponding imaging conditions are set by operating the imaging condition resetting means when the position of the C-arm is fixed. Therefore, once the imaging conditions are set at each position where the C-arm is fixed, the imaging conditions can be reset only by operating the imaging condition resetting means. This eliminates the need for repair, shortens the time required for imaging, shortens medical time, and avoids unnecessary exposure to the subject (patient).

  Next, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall side view showing a first embodiment of a surgical X-ray apparatus according to the present invention, and FIG. 2 is an overall plan view of a subject (patient) placed on an operating table 1 (see FIG. 6). An X-ray tube 2 that irradiates X-rays with M (see FIG. 6) interposed therebetween, and an image intensifier 3 as an X-ray detector that captures an X-ray image transmitted through the subject M from the X-ray tube 2 Are attached to one end and the other end of the C-arm 4. As the X-ray detector, not only the image intensifier 3 but also a flat panel detector (FPD) can be applied.

  A column member 8 is provided on an apparatus main body 7 having a carriage structure including a moving caster wheel 5 and a traveling wheel 6 with a brake so as to be movable up and down and rotatable about a vertical axis P1.

  As shown in a cross-sectional view of the main part in FIG. 3 (a cross-sectional view taken along line AA in FIG. 1), the first support member 9 integrally attached to the upper end side of the column member 8 is provided with a brake mechanism by friction. A first arm holding member 11 is provided so as to be movable in the horizontal direction via the roller 10.

  A second arm holding member 12 is provided on the first arm holding member 11 so as to be rotatable around a horizontal axis P2.

  As shown in the cross-sectional view of the main part in FIG. 4 (cross-sectional view along the line B-B in FIG. 1), the second arm holding member 12 has a predetermined roller via a second roller 13 provided with a brake mechanism by friction. A C-shaped arm 4 is provided so as to be rotatable around the center C.

  The image intensifier 3 is provided with a camera 14. The camera 14 processes an image data of the subject M imaged by the image intensifier 3 and converts the image data into digital image data. A processing device 15 is connected, and an image display device 16 such as a CRT is connected to the image processing device 15 as image display means for outputting and displaying the image data processed by the image processing device 15.

  The first arm holding member 11 is provided with a pair of first handles 17, and the C-arm 4 is provided with a pair of second handles 18. Configuration of raising and lowering and rotating the column member 8 with respect to the apparatus body 7, configuration of horizontal movement of the first arm holding member 11 with respect to the support member 9, and configuration of rotation of the second arm holding member 12 with respect to the first arm holding member 11. Each of the rotational configurations of the C-arm 4 with respect to the second arm holding member 12 is provided with a balance mechanism that reduces the weight during movement so that the C-arm 4 can be easily displaced and fixed in three dimensions manually. It is configured.

  A handle 19 is provided in the apparatus body 7, and an operation panel 20 is provided in front of the handle 19 and below each of the first grips 17, as shown in a partially omitted plan view of the main part of FIG. 5. It is provided and can be operated from either side of the apparatus body 7.

  On the operation panels 20 and 20, the first to fourth unlock keys 21, 22, 23 and 24, the circular aperture key 25, the parallel aperture key 26, and the rotation that rotates the image after operating the parallel aperture key 26. An operation key 27, an image rotation operation key 28 for rotating the image, an image inversion key 29 for inverting the image left and right and up and down, and first and second setting keys 30 and 31 are provided.

  The first lock release key 21 is rotated by releasing the lock of the C-arm 4 with respect to the second arm holding member 12 by the pushing operation, and is locked at a desired position by releasing it.

  The second lock release key 22 is rotated by releasing the lock of the second arm holding member 12 with respect to the first arm holding member 11 by the pressing operation, and is locked at a desired position by releasing. Yes.

  The third lock release key 23 unlocks the column member 8 with respect to the apparatus main body 7 by pushing it, and moves the column member 8 up and down, rotates it, and releases it to lock it in a desired position.

  The fourth lock release key 24 releases the lock of the first arm holding member 11 with respect to the support member 9 by the pressing operation, moves horizontally, and locks at a desired position by releasing it.

  The circular aperture key 25 operates a circular aperture, and the parallel aperture key 26 operates a parallel aperture.

  The rotation operation key 27 rotates the image after operating the parallel diaphragm key 26.

  The image rotation operation key 28 rotates the image so that the operator can easily see it.

  The image inversion key 29 is used to invert the image horizontally and vertically, for example, when viewed from the back side.

  The circular aperture key 25, the parallel aperture key 26, the rotation operation key 27, the image rotation operation key 28, and the image inversion key 29 are collectively referred to as imaging condition setting means.

  A circular aperture key 25, a parallel aperture key 26, a rotation operation key 27, an image rotation operation key 28, an image inversion key 29, and first and second setting keys 30, 31 are connected to an imaging condition storage means 32 such as a memory. Then, an imaging condition resetting unit 33 is connected to the imaging condition storage unit 32. Further, the imaging condition resetting unit 33 is further connected to the circular aperture key 25, the parallel aperture key 26, the rotation operation key 27, the image rotation operation key 28, and the like. Solenoids (not shown) for operating the image inversion keys 29 are connected.

  In the imaging condition storage means 32, when one of the first and second setting keys 30, 31 is pressed for a set time, the circular aperture key 25, the parallel aperture key 26, the rotation operation key 27, the image at that time The imaging conditions set by the rotation operation key 28 and the image inversion key 29 are stored.

  In the imaging condition resetting means 33, as one of the first and second setting keys 30, 31 is pressed, the corresponding imaging conditions are read from the imaging condition storage means 32, the circular aperture key 25, the parallel aperture Comparing with the setting states of the key 26, the rotation operation key 27, the image rotation operation key 28, and the image inversion key 29, it is configured to automatically reset so as to satisfy the set imaging conditions.

  Next, a usage mode will be described.

  First, as shown in the overall side view of the use state of FIG. 6, in order to see through and photograph the surgical site and the like, the C-arm 4 is operated and fixed at a first position inclined to one side, and circular. An imaging condition is set by each of the aperture key 25, the parallel aperture key 26, the rotation operation key 27, the image rotation operation key 28, and the image inversion key 29, and in this state, the first setting key 30 is pressed for a set time or longer. Thus, the imaging condition storage unit 32 stores the imaging condition set at the first position.

  Next, as shown in the overall side view of the use state of FIG. 7, in order to see through and photograph the surgical site, the C-arm 4 is operated and changed to the second position inclined to the other side and fixed. At the same time, the imaging conditions are set by the circular aperture key 25, the parallel aperture key 26, the rotation operation key 27, the image rotation operation key 28, and the image inversion key 29, and in this state, the second setting key 31 is pressed for a set time or longer. By performing the operation, the imaging condition set at the second position is stored in the imaging condition storage means 32.

  Thereafter, when the first position is changed and fixed, as the first setting key 30 is pressed, the imaging condition resetting means 33 causes the circular aperture key 25, the parallel aperture key 26, the rotation operation key 27, and the image rotation. The operation key 28 and the image inversion key 29 can be automatically operated so as to satisfy the imaging conditions set at the first position.

  Similarly, when the second position is changed and fixed, as the second setting key 31 is pressed, the imaging condition resetting means 33 causes the circular aperture key 25, the parallel aperture key 26, the rotation operation key 27, and the image to be changed. The rotation operation key 28 and the image inversion key 29 can be automatically operated so as to satisfy the imaging conditions set at the second position.

  With the above configuration, when the C-shaped arm 4 is fixed at each of the first and second positions and the imaging condition is set at each position, the C-type arm 4 is initially fixed at each of the first and second positions. By storing the set imaging conditions, when the position of the C-arm 4 is fixed next time, the corresponding imaging conditions are automatically set by operating the first or second setting keys 30 and 31. This eliminates the need to reset the imaging conditions, shortens the labor required for imaging, shortens medical time, and avoids excessive exposure to the subject (patient).

  FIG. 8 is a block diagram showing a second embodiment according to the surgical X-ray apparatus of the present invention. The differences from the first embodiment are as follows.

  In other words, the second arm holding member 12 is provided with first arm position detecting means 41 for detecting the position of the C-arm 4 with respect to the second arm holding member 12. Second arm position detecting means 42 for detecting the position of the second arm holding member 12 with respect to one arm holding member 11 is provided.

  Further, the apparatus main body 7 is provided with third arm position detecting means 43 for detecting the position of the column member 8 with respect to the apparatus main body 7, and the support member 9 is provided with the position of the first arm holding member 11 with respect to the support member 9. A fourth arm position detecting means 44 for detecting is provided.

  The first to fourth arm position detecting means 41, 42, 43, 44 are referred to as arm position detecting means for detecting the position of the C-arm 4.

  The first to fourth arm position detection means 41, 42, 43, 44 are connected to the arm position storage means 45 and the resetting means 46, the resetting means 46 is connected to the imaging condition resetting means 33, and further The first and second setting keys 30 and 31 are connected to the arm position storage means 45.

  In the arm position storage means 45, in response to a long press operation for the set time of the first or second setting key 30, 31, the circular aperture key 25, the parallel aperture key 26, the rotation operation key 27, the image rotation operation key The first position or the second position of the C-arm when the image pickup condition is set by 28 and the image inversion key 29 is stored.

  In the resetting means 46, the position of the C-type arm 4 stored in the arm position storage means 45 and the actual C-type arm 4 input from the first to fourth arm position detection means 41, 42, 43, 44. The position of the C-arm 4 is detected to be the position stored in the arm position storage means 45 and a reset signal is output, and the imaging condition resetting means 33 performs the resetting. It is like that. The configuration for storing the imaging conditions in the imaging condition storage means 32 is the same as that in the first embodiment.

  With the above configuration, when the C-shaped arm 4 is fixed at each of the first and second positions and the imaging condition is set at each position, the C-type arm 4 is initially fixed at each of the first and second positions. By storing the set imaging conditions, when the position of the C-arm 4 is fixed at the first position or the second position, the first or second setting keys 30 and 31 are operated. Even if it is not, the corresponding imaging conditions can be set naturally, the labor required for imaging can be further shortened, medical time can be further shortened, and unnecessary exposure to the subject (patient) can be avoided.

  In the above embodiment, the C-type arm 4 is configured to be manually displaced, but the rotation of the C-type arm 4 with respect to the second arm holding member 12 and the second arm holding with respect to the first arm holding member 11 are configured. The rotation of the member 12 and the rotation of the column member 8 with respect to the apparatus main body 7 are each performed by an electric motor, and the column member 8 with respect to the apparatus main body 7 is moved up and down, and the first arm holding member with respect to the support member 9 11 may be configured to be performed by a driving mechanism such as a configuration in which the horizontal movement of 11 is performed by a hydraulic cylinder or an air cylinder.

  In the above embodiment, the parallel diaphragm, the circular diaphragm, the image rotation, and the image inversion are set as the imaging conditions, but in addition to these, the tube voltage and tube current of the X-ray tube, the region of interest This includes the case where the tube voltage and the tube current are specified for each, and the region of interest is selected and set to set an X-ray condition such as the region of interest when the corresponding tube voltage and tube current are set.

  Further, it includes a case where a movable diaphragm condition is set such that a compensation filter is set in addition to a parallel diaphragm and a circular diaphragm.

  Further, the present invention can be applied to the case where at least one of the above-mentioned X-ray conditions, movable diaphragm conditions, TV rotation conditions (image rotation position), and image processing conditions are set.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole side view which shows Example 1 of the surgical X-ray apparatus which concerns on this invention. 1 is an overall plan view of Example 1. FIG. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is a partially omitted plan view of the main part. It is a whole side view which shows a use condition. It is a whole side view which shows a use condition. It is a block diagram which shows Example 2 which concerns on the surgical X-ray apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 ... X-ray tube 3 ... Image intensifier 4 ... C-type arm 7 ... Apparatus main body 15 ... Image processing apparatus (image processing means)
16. Image display device (image display means)
25. Circular aperture key (imaging condition setting means)
26 ... Parallel aperture key (imaging condition setting means)
27: Rotation operation key (imaging condition setting means)
28: Image rotation operation key (imaging condition setting means)
29 ... Image inversion key (imaging condition setting means)
32 ... Imaging condition storage means 33 ... Imaging condition resetting means 41 ... First arm position detecting means (arm position detecting means)
42. Second arm position detecting means (arm position detecting means)
43. Third arm position detecting means (arm position detecting means)
44. Fourth arm position detecting means (arm position detecting means)
45 ... arm position storage means 46 ... resetting means M ... subject

Claims (2)

  A C-type arm provided on the apparatus main body so as to be displaceable three-dimensionally to change the relative position with the subject, and an X-ray provided on one end side of the C-type arm to irradiate the subject with X-rays An X-ray detector that is provided on the other end side of the C-arm and receives X-rays transmitted through the subject, an image processing means that processes image data from the X-ray detector, and the image Image display means for outputting and displaying image data processed by the processing means, and at least one imaging condition among the X-ray condition of the X-ray tube, movable aperture condition, TV rotation condition (image rotation position), and image processing condition Imaging condition setting means for setting the imaging conditions, imaging condition storage means for storing the imaging conditions set by the imaging condition setting means, and imaging condition resetting for reading out and resetting the imaging conditions stored in the imaging condition storage means Specially provided with means Surgical X-ray device to. 2. The surgical X-ray apparatus according to claim 1, wherein the C position detected by the arm position detecting means when an imaging condition is set by the arm position detecting means for detecting the position of the C-arm and the imaging condition setting means. Arm position storage means for storing the position of the mold arm, and detecting that the position of the C-type arm detected by the arm position detection means is the position stored in the arm position storage means and receiving a reset signal A surgical X-ray apparatus comprising: resetting means for outputting and resetting the imaging condition resetting means.

Images