Light source device, auxiliary positioning device and medical imaging equipment

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to a light source device, an auxiliary positioning device and medical imaging equipment. The movable part is provided with a light source, the light source is configured to be capable of emitting plane light beams, and the movable part is assembled to be capable of translating in the first direction relative to the fixed part and rotating in the axis parallel to the second direction relative to the fixed part; and the driving mechanism is used for driving the movable part to translate along a first direction relative to the fixed part and driving the movable part to rotate along an axis parallel to a second direction relative to the fixed part. According to the utility model, the ray path corresponding to the focus position is reversely traced according to the scattering law of the ray source, so that the specific position of the focus on the human body is determined, a reliable basis is provided for medical personnel to determine the puncture position in the operation process, the operation difficulty is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices, and particularly relates to a light source device, an auxiliary positioning device and a medical imaging device. Background Art

[0002] Although medical images can show the location of lesions on the images, since the rays are scattered from the tube (ray source) in all directions, the image formed after the rays pass through human tissues and project onto the imaging plate is magnified to a certain extent compared with the real tissue structure of the human body. And with the change of the relative position between the human body and the ray source, the relative positions of the various tissue structures in the medical image will also change slightly. Therefore, it is impossible to directly determine the specific location of the lesion in the human body based on the location of the lesion in the image. During a puncture operation, a doctor needs to judge the location to be punctured according to the image information. However, due to the asymmetry between the above-mentioned medical image and the real human tissue, it requires high qualifications and experience background to judge the location of the puncture point on the human body surface from the image information, and there will be a certain deviation in the actual operation process, which affects the quality of the operation and increases the pain of the patient. Summary of the Utility Model

[0003] In view of the above-mentioned disadvantages of the prior art, the purpose of the present utility model is to provide a light source device, an auxiliary positioning device and a medical imaging device that are convenient for positioning the real location of a lesion according to a medical image.

[0004] To achieve the above object and other related objects, the present utility model provides a light source device, including:

[0005] A fixing part;

[0006] A movable part, on which a light source is installed, the light source is configured to be able to emit a planar light beam, the movable part is assembled to be able to translate relative to the fixing part along a first direction, and be able to rotate relative to the fixing part along an axis parallel to a second direction, the second direction is perpendicular to the first direction, and the second direction is parallel to the planar light beam;

[0007] A driving mechanism for driving the movable part to translate relative to the fixing part along the first direction, and driving the movable part to rotate relative to the fixing part along an axis parallel to the second direction, so that during the movement of the movable part, the planar light beam can always pass through a preset target area.

[0008] In an optional embodiment of the present invention, the driving mechanism includes a first moving part and a second moving part, and the first moving part and the second moving part are respectively movably arranged relative to the fixed part along the first direction; the movable part is respectively rotatably connected to the first moving part and the second moving part, and the movable part is movably arranged relative to at least one of the first moving part and the second moving part along a direction perpendicular to the second direction and parallel to the plane light beam.

[0009] In an optional embodiment of the present invention, there is at least one station within the movement range of the first moving part and the second moving part that makes the plane light beam perpendicular to the first direction.

[0010] In an optional embodiment of the present invention, the driving mechanism further includes a driving element, and the driving element is configured to drive the first moving part and the second moving part to translate along the first direction at a constant speed ratio.

[0011] In an optional embodiment of the present invention, the driving element includes a first lead screw and a second lead screw rotatably connected to the fixed portion, and the first moving portion and the second moving portion are threadedly matched with the first lead screw and the second lead screw respectively.

[0012] In an optional embodiment of the present invention, the driving element further includes a rotation driving unit for driving the first lead screw and the second lead screw to rotate.

[0013] In an optional embodiment of the present invention, one of the first screw and the second screw is transmission-connected to the power output end of the rotary drive unit; and a speed transmission mechanism is provided between the first screw and the second screw.

[0014] In order to achieve the above-mentioned purpose and other related purposes, the utility model also provides an auxiliary positioning device, which is applied to medical imaging equipment, wherein the medical imaging equipment includes a radiation source and an imaging plate; the auxiliary positioning device includes the light source device, the fixing part is installed on one side of the imaging plate, the first direction and the second direction are respectively parallel to the imaging plate, and the radiation source is located in the target area.

[0015] In an optional embodiment of the present invention, at least two light source devices are provided, and the translation directions of the movable parts of at least two of the light source devices are arranged at an angle.

[0016] In order to achieve the above-mentioned purpose and other related purposes, the utility model also provides a medical imaging device, including the auxiliary positioning device.

[0017] The technical effect of the present utility model lies in that: according to the scattering law of the radiation source, the present utility model traces back the ray path corresponding to the lesion position in reverse to determine the specific position of the lesion on the human body. During the operation, it provides a reliable basis for medical staff to determine the puncture position, reduces the operation difficulty, and improves the operation efficiency. Description of the Drawings

[0018] Figure 1 is the working principle diagram of the auxiliary positioning device provided by the embodiment of the present utility model;

[0019] Figure 2 is the structural schematic diagram of the auxiliary positioning device provided by the embodiment of the present utility model;

[0020] Figure 3 is the structural schematic diagram of the light source device provided by the embodiment of the present utility model. Detailed Embodiments

[0021] The following uses specific specific examples to illustrate the embodiments of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0022] It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape, and size of the components during actual implementation. The type, quantity, and ratio of each component during its actual implementation can be an arbitrary change, and the component layout type may also be more complex.

[0023] X-ray imaging equipment is an important tool for obtaining images of the internal structure of the human body. Its basic structure includes an X-ray tube, a bracket and a support system, an X-ray detector, and a control unit. The X-ray tube is the core component of the X-ray imaging equipment, consisting of a cathode and an anode. The cathode generates electrons, and the anode receives the electrons and generates X-rays. The design of the X-ray tube enables it to control the energy and intensity of the generated X-rays. The bracket and support system are used to support the X-ray tube and the X-ray detector, and can usually adjust the angle and position to image different parts. The X-ray detector is used to receive the X-rays passing through the patient's body and convert them into electrical signals or digital signals to capture the image information after the X-rays are transmitted. The control unit is responsible for controlling the working parameters of the X-ray tube, such as voltage, current, etc., and also includes an image processing system for processing and optimizing the collected data.

[0024] The X-ray imaging equipment releases electrons by heating the cathode. These electrons are accelerated and strike the anode. During the striking process, part of the electron energy is converted into X-ray radiation. The X-rays pass through the human tissues and are absorbed by different tissue parts with different densities to different degrees, forming a transmitted image. High-density tissues such as bones absorb more X-rays and appear as bright images; low-density tissues such as soft tissues absorb less X-rays and appear as dark images. The X-ray detector converts the transmitted X-rays into electrical signals or digital signals. These signals are amplified and processed to form an image of the internal structure of the human body.

[0025] As Figure 1 shown, X-rays are roughly scattered in all directions from the ray source. Therefore, there is a certain magnification in the image formed after the rays pass through the human tissues and are projected onto the imaging plate compared with the real tissue structure of the human body. And as the relative position between the human body and the ray source changes, the relative positions of the various tissue structures in the medical image will also change slightly. So, it is impossible to directly determine the specific position of the lesion in the human body based on the position of the lesion in the image. For this reason, the present utility model traces back the ray path corresponding to the lesion position in reverse according to the scattering law of the ray source to determine the specific position of the lesion on the human body, providing a reliable basis for medical staff to determine the puncture position during the operation, reducing the operation difficulty, and improving the operation efficiency.

[0026] Please refer to Figures 1-3 shown below. The technical solution of the present utility model will be described in detail with specific embodiments:

[0027] Please refer to Figure 1 、 2As shown in the figure, an embodiment of the present utility model provides a medical imaging device, specifically an X-ray medical imaging device, which includes a radiation source 10, an imaging plate 20, and an auxiliary positioning device. The radiation source 10 is used to generate X-rays, and the imaging plate 20 is used to receive X-rays. The specific working principles of the two have been described in the above background introduction, so they will not be elaborated here. The working principle of the auxiliary positioning device will be described in detail below with reference to the accompanying drawings.

[0028] Please refer to Figure 1 As shown in the figure, as mentioned above, the rays generated by the radiation source 10 are scattered in all directions. Therefore, to trace back the true position of a certain feature (such as a lesion) 22 on the image 21 on the human body 40, only a light beam directed towards the radiation source 10 needs to be emitted from the corresponding area of the feature 22 on the image 21, and the projection of this light beam on the human body 40 is the true position of the organ tissue corresponding to the above feature 22 on the human body 40. However, setting a light source in the imaging area of the imaging plate 20 will affect the reception of ray signals by the imaging plate 20. Therefore, the present utility model provides two light sources 33 at the edge of the imaging plate 20. These two light sources 33 can be translated along the x-axis and y-axis respectively. The light beams emitted by these two light sources 33 are within the first planar light beam a and the second planar light beam b respectively, so that the projections of these two light beams on the human body 40 form two intersecting straight lines L1 and L2. Among them, the first planar light beam a is parallel to the y-axis and can rotate around the y-axis, and the second planar light beam b is parallel to the x-axis and can rotate around the x-axis. This enables the two light sources 33 to always make the first planar light beam a and the second planar light beam b pass through the radiation source 10 during the translation process. At this time, one of the light sources 33 is adjusted along the x-axis to be flush with the feature 22, and the other light source 33 is adjusted along the y-axis to be flush with the feature 22. The intersection point of the obtained straight line L1 and straight line L2 is the true position of the organ tissue corresponding to the above feature 22 on the human body 40. Here, the planar light beam refers to a light beam within a plane and can form a light beam with a certain shape of a surface. For example, a light beam that itself forms a fan shape. Exemplarily, a fan-shaped light beam generated by a one-dimensional line laser.

[0029] In a preferred embodiment, the above x-axis and y-axis are perpendicular to each other. The contour of the imaging plate 20 can be rectangular, and the two light sources 33 are respectively arranged on the long side and the wide side of the imaging plate 20; however, it should be noted that in some other embodiments, the x-axis and y-axis may not be perpendicular, and they do not have to be arranged along the edge of the imaging plate 20, as long as there is a certain included angle between the two.

[0030] The following will detail how the working process of the above auxiliary positioning device is realized in combination with the specific structure of the auxiliary positioning device:

[0031] Please refer to Figure 2 、 3As shown in the figure, the auxiliary positioning device provided by the embodiment of the present utility model includes two light source devices 30, which are respectively installed at the edges of the imaging plate 20. The two light source devices 30 have the same structure but different installation postures.

[0032] As Figure 3 shown, taking one of the light source devices 30 as an example, first, the structure of the light source device 30 will be described. The light source device 30 includes a fixed part 31, a movable part 32, and a driving mechanism. The light source 33 is installed on the movable part 32. The light source 33 is configured to be able to emit a planar light beam 331. The movable part 32 is assembled to be able to translate relative to the fixed part 31 along a first direction and rotate relative to the fixed part 31 about an axis parallel to a second direction, and this axis moves synchronously with the translation of the movable part 32. The second direction is perpendicular to the first direction, and the second direction is parallel to the planar light beam. Please refer to Figure 3 shown, the driving mechanism is used to drive the movable part 32 to translate relative to the fixed part 31 along the first direction and drive the movable part 32 to rotate relative to the fixed part 31 about an axis parallel to the second direction, so that the planar light beam can always pass through a preset target area 100, and this target area 100 is the area where the radiation source 10 is located. It should be noted that the above first direction and second direction are a relative reference defined for the convenience of description, and their actual directions change with the change of the installation posture of the light source device 30. For example, in Figure 1 the specific application scenario shown, the first direction of one of the light source devices 30 is parallel to the x-axis, and the second direction is parallel to the y-axis. The first direction of the other light source device 30 is parallel to the y-axis, and the second direction is parallel to the x-axis.

[0033] Please refer to Figure 1 、 2 shown, in a specific embodiment, the two light source devices 30 can be respectively installed at two adjacent edges of the imaging plate 20, and the movement directions of the movable parts 32 of the two light source devices 30 form a certain angle; the planar light beam of one of the light source devices 30 forms Figure 1 the first planar light beam a shown in Figure 1 the figure, and the planar light beam of the other light source device 30 forms

[0034] the second planar light beam b shown in the figure. It should be noted that the number of light source devices 30 is not necessarily two. For example, in some scenarios, when only the position of one direction of the lesion needs to be located, only one light source device 30 can be set. Another example is that when a certain area on the image needs to be located, multiple light source devices 30 can be set. Each two light source devices 30 can locate a point on the edge of the area, and then the position of the area can be determined by locating multiple points on the edge of the area.

[0035] Please refer to Figure 3 As shown, in an alternative embodiment of the present utility model, the driving mechanism includes a first moving part 34 and a second moving part 35, and the first moving part 34 and the second moving part 35 are respectively movably arranged relative to the fixed part 31 along the first direction; the moving part 32 is respectively rotatably connected to the first moving part 34 and the second moving part 35, and the moving part 32 is movably arranged at least relative to one of the first moving part 34 and the second moving part 35 along a direction perpendicular to the second direction and parallel to the plane light beam. It should be understood that when there is a speed ratio between the first moving part 34 and the second moving part 35, the moving part 32 can be made to rotate along the second direction while translating along the first direction, and the rotation speed of the moving part 32 can be controlled by controlling the magnitude of the above speed ratio. By controlling the translation speed and rotation speed of the moving part 32, the plane light beam can be made to rotate around the target area 100, thereby ensuring that the light beam 331 emitted by the light source 33 always points to the radiation source 10.

[0036] It should be noted that the specific form of the driving mechanism is not unique, and any solution that can drive the translation and rotation of the moving part 32 should be applicable to the present utility model. The translation action and rotation action of the moving part 32 can also be driven by independent driving elements respectively. For example, in some other embodiments, the driving mechanism may include an electric slide rail and an independent motor. The motor is installed on the slider of the electric slide rail, and the moving part 32 is installed on the main shaft of the motor, so that the translation and rotation actions of the moving part 32 can be realized.

[0037] Please refer to Figure 3 As shown, in some embodiments, the imaging plate 20 is arranged opposite to the radiation source 10. In this case, the scattering path of the X-ray is centrosymmetric about the center of the imaging plate 20. To adapt to this imaging device structure, in an alternative embodiment of the present utility model, there is at least one working position in the movement strokes of the first moving part 34 and the second moving part 35 where the plane light beam is perpendicular to the first direction, and the movement strokes of the first moving part 34 and the second moving part 35 can be symmetrically distributed on both sides of this working position, so that the deflection angle of the light beam 331 can cover all the angles of the scattering paths of the X-ray.

[0038] Please refer to Figure 3As shown, in an optional embodiment of the present invention, the driving mechanism further includes a driving element, and the driving element is configured to drive the first moving part 34 and the second moving part 35 to translate along the first direction at a constant speed ratio. From the geometric relationship between the first moving part 34, the second moving part 35 and the motion path of the plane light beam, it can be seen that when the first moving part 34 and the second moving part 35 translate along the first direction at a constant speed ratio, the plane light beam can rotate around a fixed point, and the fixed point can be made to fall within the target area 100 by simply adjusting the magnitude of the above speed ratio.

[0039] See also Figure 3 As shown, in an optional embodiment of the utility model, the driving element includes a first lead screw 36 and a second lead screw 37 that are rotatably connected to the fixed part 31, and the first moving part 34 and the second moving part 35 are threadedly matched with the first lead screw 36 and the second lead screw 37 respectively. The driving element also includes a rotation driving unit 38, such as a motor, for driving the first lead screw 36 and the second lead screw 37 to rotate. One of the first lead screw 36 and the second lead screw 37 is transmission-connected to the power output end of the rotation driving unit 38; a speed change transmission mechanism 39 is provided between the first lead screw 36 and the second lead screw 37, and the speed change transmission mechanism 39 can be a gear mechanism, a sprocket mechanism, a pulley mechanism, etc. In some other embodiments, the speed change transmission mechanism 39 may not be provided, and the first lead screw 36 and the second lead screw 37 may be set to different pitches, so that the differential motion of the first moving part 34 and the second moving part 35 can still be achieved. According to the geometric relationship between the first moving part 34, the second moving part 35 and the plane light beam, the utility model adopts a rotation drive unit 38 to drive the light source 33 to achieve translation and rotation at the same time, and ensure that the light beam emitted by the light source 33 always points to the target area 100, thereby simplifying the equipment structure and avoiding complex control processes.

[0040] It should be understood that the specific form of the driving element is not unique. For example, in some other embodiments, the driving element may also be a cylinder, an electric cylinder, a synchronous belt, or other structures.

[0041] In summary, the utility model reversely traces the ray path corresponding to the lesion position according to the scattering law of the ray source 10 to determine the specific position of the lesion on the human body. During the operation, it provides a reliable basis for medical staff to determine the puncture position, reduces the difficulty of the operation, and improves the efficiency of the operation. The utility model utilizes the geometric relationship between the first moving part 34, the second moving part 35 and the plane light beam, and adopts a rotation drive unit 38 to drive the light source 33 to achieve translation and rotation at the same time, and ensures that the light beam emitted by the light source 33 always points to the target area 100, simplifies the equipment structure, and avoids complex control processes.

[0042] The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention. In addition, the nouns and pronouns related to people in this disclosure are not limited to specific genders.

[0043] In the description herein, numerous specific details are provided, such as examples of components and / or methods, to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, parts, materials, parts, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Claims

1. A light source device, characterized in that: include: Fixed part; a movable part, the movable part being equipped with a light source, the light source being configured to emit a plane light beam, the movable part being configured to be able to translate relative to the fixed part along a first direction, and to be able to rotate relative to the fixed part along an axis parallel to a second direction, the second direction being perpendicular to the first direction and parallel to the plane light beam; The driving mechanism is used to drive the movable part to translate relative to the fixed part along a first direction, and to drive the movable part to rotate relative to the fixed part along an axis parallel to a second direction, so that during the movement of the movable part, the plane light beam can always pass through a preset target area.

2. The light source device according to claim 1, characterized in that: The driving mechanism includes a first moving part and a second moving part, and the first moving part and the second moving part are respectively movably arranged relative to the fixed part along the first direction; the movable part is rotationally connected to the first moving part and the second moving part respectively, and the movable part is movably arranged relative to at least one of the first moving part and the second moving part along a direction perpendicular to the second direction and parallel to the plane light beam.

3. The light source device according to claim 2, characterized in that: There is at least one station within the movement range of the first moving part and the second moving part so that the plane light beam is perpendicular to the first direction.

4. The light source device according to claim 2, characterized in that: The driving mechanism further includes a driving element configured to drive the first moving part and the second moving part to translate along the first direction at a constant speed ratio.

5. The light source device according to claim 4, characterized in that: The driving element includes a first lead screw and a second lead screw rotatably connected to the fixed portion, and the first moving portion and the second moving portion are threadedly matched with the first lead screw and the second lead screw respectively.

6. The light source device according to claim 5, characterized in that: The driving element further includes a rotation driving unit for driving the first lead screw and the second lead screw to rotate.

7. The light source device according to claim 6, characterized in that: One of the first screw and the second screw is in transmission connection with the power output end of the rotary drive unit; a speed change transmission mechanism is provided between the first screw and the second screw.

8. An auxiliary positioning device, characterized in that: Applied to medical imaging equipment, the medical imaging equipment includes a radiation source and an imaging plate; the auxiliary positioning device includes the light source device according to any one of claims 1 to 7, the fixing portion is installed on one side of the imaging plate, the first direction and the second direction are respectively parallel to the imaging plate, and the radiation source is located in the target area.

9. The auxiliary positioning device according to claim 8, characterized in that: At least two light source devices are provided, and the translation directions of the movable parts of at least two of the light source devices are arranged at an angle.

10. A medical imaging device, characterized in that: Includes the auxiliary positioning device as described in claim 8 or 9.

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