JP2011152327A - Pressing plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressing plate capable of improving work-efficiency by an operator under a condition where a test object of a subject, particularly a breast, is pressed and fixed with the pressing plate. <P>SOLUTION: The pressing plate 34 has a rectangular bottom plate 46 (a pressing part) for pressing a mamma of the subject, four side walls 52a-52d standing toward the side of a radiation-ray-source container from the outer peripheral part of the bottom plate 46, and a connector 56 mounted on a proximal end 54 extending from the side wall 52a to a groove part 44. The inside of the side wall 52a is mounted with an auxiliary lighting 60 for lighting the bottom plate 46 of the pressing plate 34, while a power source for supplying electricity to the auxiliary lighting 60 is included. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a compression plate that is detachable from a mammography apparatus that irradiates a breast of a subject to acquire radiation images.

  Conventionally, in order to diagnose a disease, a biopsy needle is punctured into a test object of a subject, and a tissue of a biopsy site in the test object (for example, a lesion site in a breast of a subject) is the biopsy needle. It is widely practiced to take a precise inspection by sampling. An opening (collecting part) is provided at the distal end of the biopsy needle, the opening is disposed in the vicinity of the biopsy site, and a part of the tissue is aspirated through the opening, whereby the tissue A part of is collected. In this case, in order to reliably collect the tissue, the biopsy needle may be accurately punctured with respect to the inspection target so that the tip of the biopsy needle is disposed in the vicinity of the biopsy site. is necessary.

  For example, in Patent Document 1, when a plurality of through-holes for penetrating a biopsy needle are formed in a compression plate that compresses an object to be examined, it is suitable for biopsy (that is, at a biopsy site). An apparatus is disclosed which provides means for optically marking the (closest) through-hole. Thereby, since an appropriate puncture position on the two-dimensional coordinates in plan view of the inspection object can be visually recognized, the burden of confirmation work by a doctor or an engineer (hereinafter referred to as “operator”) can be reduced.

  On the other hand, in order to reliably collect the tissue, it is necessary that the three-dimensional position of the biopsy site is specified in advance.

  Therefore, the radiation imaging apparatus is used to irradiate the inspection object with radiation from radiation sources arranged at two different angles, and the radiation transmitted through the inspection object is detected by a radiation detector. Stereo imaging for acquiring a single radiographic image is performed, and the three-dimensional position of the biopsy site is calculated based on the two radiographic images.

  Further, an automatic exposure control device may be used to obtain an appropriate density on each radiographic image. In this case, in order to appropriately and automatically control the radiation dose, it is necessary to irradiate the radiation with the detector provided in the automatic exposure control device being disposed at an appropriate position.

  For example, Patent Document 2 discloses an apparatus provided with means for projecting the position of the detector onto the inspection object in a state where the inspection object is compressed using a compression plate (FIG. 3). FIG. 5 and FIG. 6). Thereby, since the detection position of the radiation on the two-dimensional coordinates in plan view of the inspection object can be visually recognized, the burden of confirmation work by the operator can be reduced.

JP-A-8-215198 JP-A-8-80295

  By the way, an operator may perform various preparation work in a state in which an object to be examined of a subject is compressed and fixed by a compression plate. For example, the operation | work which confirms the quality of the positioning in radiographic imaging, the operation | work which disinfects the skin surface of the puncture position in a biopsy operation, etc. are mentioned. In particular, in an upright mammography device, if there are any obstacles between the illumination of the photographing room or hospital room and the fixed inspection object, the illumination light is blocked, and the shape of the obstacle is determined. A shadow is formed. As a result, the periphery of the object to be inspected becomes entirely or partially dark, which may cause a disadvantage that hinders the above-described preparation work.

  In the apparatus disclosed in Patent Document 1, although light as a mark is irradiated to a specific through hole, the function as an auxiliary lamp cannot be exhibited because it does not directly illuminate the inspection object.

  Further, in the apparatus disclosed in Patent Document 2, it is also possible to use a light projecting unit for visually recognizing a radiation detection position as an auxiliary lamp during preparation work or the like. However, since light is irradiated obliquely from above the compression plate, a part of the subject's body (for example, an arm when the test object is a breast) or a part of the operator's body (particularly the head) In many cases, it is impossible to eliminate the influence of shading.

  In any case, the apparatuses disclosed in Patent Documents 1 and 2 have a disadvantage that the work efficiency of the operator is lowered due to the shadow generated by some kind of obstacle.

  The present invention has been made in view of the above problems, and provides a compression plate that can improve the work efficiency of an operator in a state where an object to be examined, particularly a breast, is compressed and fixed by a compression plate. The purpose is to provide.

  The present invention relates to a compression plate that is detachable from a mammography apparatus that irradiates a breast of a subject to acquire radiation images.

  It has a compression part that compresses the breast, a light emitter that is directed to the breast that is compressed by the compression part, and a power supply unit that supplies power to the light emitter.

  As described above, since the light emitting body directed to the breast to be compressed is provided on the compression plate, the distance between the light emitting body and the breast can be shortened, and the influence of the obstacle between the two is reduced. Thereby, the work efficiency by the operator in a state where the breast is compressed and fixed by the compression plate can be improved.

  Moreover, it is preferable that the said electric power supply means is a battery provided in the said compression board.

  In addition, it is preferable that the compression plate is electrically connected to the mammography apparatus when attached, and the power supply means is supplied from a power source provided in the mammography apparatus.

  According to the compression plate according to the present invention, since the light emitter directed to the breast to be compressed is provided on the compression plate, the distance between the light emitter and the breast can be shortened, and the obstacle between the two The effect of. Thereby, the work efficiency by the operator in a state where the breast is compressed and fixed by the compression plate can be improved.

It is a perspective view of the mammography apparatus with which the compression board which concerns on this Embodiment was integrated. It is a perspective view of the compression board concerning this embodiment. It is a partial side view of the mammography apparatus of FIG. FIG. 4 is a partially omitted cross-sectional view taken along line IV-IV of the compression plate of FIG. 2. It is a partial omission sectional view of the compression board concerning the 1st modification of this embodiment. FIG. 10 is a partially omitted cross-sectional view of a compression plate according to a second modification of the present embodiment.

  Hereinafter, a suitable embodiment is mentioned about the compression board which concerns on this invention, and it demonstrates in detail, referring FIGS. 1-4.

  As shown in FIG. 1, a mammography apparatus 10 incorporating a compression plate 34 according to the present embodiment basically includes a base 14 installed in a standing state, and a substantially central portion of the base 14. An arm member 18 fixed to the distal end of the pivot shaft 16 disposed in the body, and a radiation source 26 for irradiating the mammo 22 (see FIG. 3) as an examination object of the subject 20 with radiation 24. A radiation source housing 28 fixed to one end of the arm member 18 and a solid detector (radiation detector) 30 for detecting the radiation 24 transmitted through the mammo 22 are housed and fixed to the other end of the arm member 18. An imaging table 32, a compression plate 34 that compresses and holds the mammo 22 against the imaging table 32, and a biopsy hand unit that is attached to the compression plate 34 and extracts a necessary tissue from the biopsy site 36 of the mammo 22. 38.

  1 and 3, in the state where the mammo 22 of the subject 20 in the sitting posture is compressed and fixed by the compression plate 34 and the imaging table 32, irradiation of the radiation 24 to the mammo 22 and tissue of the biopsy site 36 are performed. The case where collection is performed is illustrated. The base 14 is provided with a display operation unit 40 that displays imaging conditions such as an imaging region of the subject 20, ID information of the subject 20, and the like, and can set such information as necessary. The

  The arm member 18 that couples the radiation source housing unit 28 and the imaging table 32 is configured to be adjustable about the direction of the subject 20 with respect to the mammo 22 by turning about the turning axis 16. The radiation source accommodating portion 28 is connected to the arm member 18 via a hinge portion 42, and is configured to be able to turn independently of the imaging table 32 in the arrow θ direction.

  The arm member 18 is provided with a groove 44 along the arrow Z direction on the side (front side) facing the subject 20, while the subject 20 holds the both sides along the arrow Y direction. A handle 58 is provided for each of them. A connector 56 is provided at the proximal end portion 54 of the compression plate 34, and the compression plate 34 accommodates the radiation source by inserting the proximal end portion 54 and the connector 56 into the groove portion 44 and fitting with a mounting portion (not shown). In addition to being disposed between the unit 28 and the imaging table 32, it is possible to supply power and transmit / receive signals via the connector 56 between the base 14 side and the compression plate 34 side of the mammography apparatus 10. . Further, since the compression plate 34 is disposed between the radiation source accommodating portion 28 and the imaging table 32, the compression plate 34 is displaced in the direction of the arrow Z along the groove portion 44. It can be displaced in the direction of arrow Z integrally with the mounting portion.

  As shown in FIGS. 1 and 2, the compression plate 34 has a rectangular bottom plate 46 (compression unit) that compresses the mammo 22 of the subject 20, and faces the radiation source accommodation unit 28 from the outer periphery of the bottom plate 46. And the above-mentioned base end portion 54 extending from the side wall 52a toward the groove portion 44, and the above-described connector 56 provided at the base end portion 54.

  Of the side walls 52a to 52d, the side wall 52a connected to the base end portion 54 has a wider shape than the other three side walls 52b to 52d, and the biopsy hand portion 38 is attached to the upper surface of the side wall 52a. ing. Further, an opening 50 for collecting a tissue using the biopsy hand unit 38 is provided on the bottom plate 46 on the chest wall 48 side of the subject 20. The biopsy hand portion 38 includes a post 70 fixed to the side wall 52 a, a first arm 72 pivotally supported along the surface of the bottom plate 46, one end of which is pivotally supported on the post 70, and the other end of the first arm 72. And a second arm 74 that is pivotally supported along the surface of the bottom plate 46. A biopsy needle 76 that can move in the arrow Z direction is attached to the other end of the second arm 74.

  The biopsy needle 76 includes a collection unit 78 that sucks and collects a tissue (calcified tissue) of the biopsy site 36 as a lesion site (for example, a calcified portion) of the mammo 22. The collection unit 78 of the biopsy needle 76 moves the first arm 72 and the second arm 74 of the biopsy hand unit 38 in the XY plane along the surface of the bottom plate 46 and moves the biopsy needle 76 in the arrow Z direction. By doing so, it can be arranged in the vicinity of the biopsy site 36.

  As shown in FIGS. 2 and 3, an auxiliary lamp 60 for illuminating the bottom plate 46 side of the compression plate 34 is attached to the inner surface of the side wall 52a. Further, a switch 62 that can manually switch on / off the auxiliary lamp 60 is attached to the outer surface of the side wall 52d.

  As shown in FIG. 4, a part of the inner surface of the side wall 52a is penetrated in a substantially conical shape, the opening is covered with a disc-shaped cover 63 made of a translucent material, and the chamber 64 is formed. Is formed. An LED 66 (light emitter) is fixed to the inner wall of the chamber 64 and is directed to the upper surface side (in particular, the opening 50) of the bottom plate 46 of the compression plate 34. The LED 66 is provided with two wires 68a and 68b. One wiring 68 a is connected to the power source 100 disposed in the mammography apparatus 10 via the switch 62 and via the connector 56. The other wiring 68 b is connected to the power supply 100 via the connector 56.

  The mammography apparatus 10 incorporating the compression plate 34 according to the present embodiment is basically configured as described above. Next, the operation thereof will be described.

  As shown in FIG. 1, imaging conditions such as a tube current, a tube voltage, an irradiation dose of radiation 24, an irradiation time, an imaging method, and an imaging sequence are set prior to imaging.

  Next, the worker positions the mammo 22 of the subject 20. That is, after placing the mammo 22 at a predetermined position (a position facing the opening 48) of the imaging table 32, the drive control unit (not shown) moves the compression plate 34 toward the imaging table 32 in the arrow Z direction. Press to position.

  As shown in FIG. 4, the operator switches the switch 62 attached to the compression plate 34 from the OFF state to the ON state when confirming the positioning. If it does so, the electric circuit comprised by wiring 68a, 68b will be in a closed state, electric power will be supplied to LED66, and LED66 will be lighted. The emitted light from the LED 66 is transmitted through the cover 63 and reaches the upper surface side of the bottom plate 46. In particular, since the LED 66 of the auxiliary lamp 60 is directed toward the opening 50, light is irradiated around the mammo 22 that is compressed and fixed by the compression plate 34.

  Here, even when the worker works in a posture covering the upper side of the compression plate 34, the light emitted from the auxiliary lamp 60 is irradiated from a substantially horizontal direction, so that the optical path of the illumination light is blocked. Absent.

  When the predetermined work is completed, the worker turns the switch 62 from the ON state to the OFF state. Then, the electric circuit constituted by the wirings 68a and 68b is opened, the supply of power from the power supply 100 is stopped, and the LED 66 is turned off. Also, in the case of biopsy, as in the case of radiographic imaging, the operator can perform work using the auxiliary lamp 60 as necessary.

  As described above, since the auxiliary lamp 60 directed to the side of the mammo 22 to be compressed by the bottom plate 46 is provided on the compression plate 34, the distance between the auxiliary lamp 60 and the mammo 22 can be shortened. The effect of obstacles is reduced. Thereby, the work efficiency by the operator in a state where the mammo 22 is compressed and fixed by the compression plate 34 can be improved.

  The compression plate 34 according to the present embodiment is not limited to the above description, and can be changed to various configurations. Modification examples (first and second modification examples) of the present embodiment will be described with reference to FIGS. 5 and 6. In the following modifications, the same components as those in the present embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and the same applies hereinafter.

  As shown in FIG. 5, the first modified example is different in configuration from the present embodiment in that the compression plate 34 includes a power source 100 (battery). Since it comprises in this way, the electric power supply from the mammography apparatus 10 becomes unnecessary.

  As shown in FIG. 6, the second modification is structurally different from the present embodiment in that an auxiliary lamp 60 is provided on the side wall 52b side. Since it comprises in this way, since the distance of the auxiliary lamp 60 and the opening part 50 (namely, mammo 22) becomes short, the light quantity irradiated to the mammo 22 increases, and the brightness | luminance becomes high correspondingly. Thereby, the work efficiency is further improved.

  In addition, this invention is not limited to embodiment mentioned above, Of course, it can change freely in the range which does not deviate from the summary of this invention.

  In this embodiment, an LED is used as a light emitter, but the present invention is not limited to this. For example, an incandescent bulb, a fluorescent lamp, a high-intensity discharge lamp such as a mercury lamp, or an electroluminescence element may be used.

  Needless to say, the power supply means may be a DC power supply or an AC power supply (single-phase type, three-phase type, etc.), or various batteries may be used.

DESCRIPTION OF SYMBOLS 10 ... Mammography apparatus 20 ... Subject 22 ... Mammo 32 ... Imaging stand 34 ... Compression plate 36 ... Biopsy site 46 ... Bottom plate 52a-52d ... Side wall 60 ... Auxiliary light 62 ... Switch 64 ... Chamber 66 ... LED
68a, 68b ... wiring 100 ... power supply

Claims (3)

A compression plate that is detachable from a mammography device that irradiates a breast of a subject and obtains a radiation image,
A compression part that compresses the breast;
A light emitting body directed to the breast side to be compressed by the compression unit;
And a power supply means for supplying power to the light emitter. The compression plate according to claim 1,
The said power supply means is a battery provided in the said compression board. The compression board characterized by the above-mentioned. The compression plate according to claim 1,
The compression plate is electrically connected to the mammography device when mounted,
The compression plate, wherein the power supply means is supplied from a power source provided in the mammography apparatus.

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