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 translation part is movably connected with the fixed part along a first direction; the rotating part is rotationally connected with the translation part along a first axis, and the first axis is perpendicular to the first direction; the light source is fixedly mounted on the rotating part, the light source is configured to be capable of emitting a planar light beam, and the planar light beam is parallel to the first axis; and the driving mechanism is used for driving the translation part to translate along the first direction and driving the rotating part to rotate along the first axis. 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 images formed after the rays pass through human tissues and are projected onto the imaging plate are magnified to a certain extent compared with the true tissue structure of the human body. Moreover, 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, the doctor needs to judge the position 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 position of the puncture point on the human body surface from the image information, and there will be a certain deviation during the actual operation, 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 true position 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, comprising:

[0005] A fixing part;

[0006] A translation part, movably connected to the fixing part along a first direction;

[0007] A rotating part, rotatably connected to the translation part along a first axis, the first axis being perpendicular to the first direction;

[0008] A light source, fixedly installed on the rotating part, the light source being configured to be able to emit a plane light beam, the plane light beam being parallel to the first axis;

[0009] A driving mechanism, used to drive the translation part to translate along the first direction and drive the rotating part to rotate along the first axis, so that the plane light beam can always pass through a preset target area.

[0010] In an optional embodiment of the present utility model, the driving mechanism includes a motor, a pulley and a synchronous belt. The motor and the pulley are installed on the translation part, the pulley is in transmission connection with the output shaft of the motor, both ends of the synchronous belt are fixedly connected to the fixing part, and the synchronous belt is engaged with the pulley.

[0011] In an alternative embodiment of the present utility model, a guide wheel is further included. The guide wheel is rotatably connected to the translation part, the guide wheel is in contact with the synchronous belt, and the guide wheel is assembled to be capable of bending the synchronous belt on at least one side of the pulley, so as to increase the wrap angle between the synchronous belt and the pulley.

[0012] In an alternative embodiment of the present utility model, at least two of the guide wheels are symmetrically arranged on both sides of the pulley.

[0013] In an alternative embodiment of the present utility model, the driving mechanism further includes a worm gear and a worm. The worm is in transmission connection with the output shaft of the motor, the worm gear is fixedly connected to the rotating part, and the worm gear meshes with the worm.

[0014] In an alternative embodiment of the present utility model, the worm is coaxially and fixedly connected to the pulley.

[0015] In an alternative embodiment of the present utility model, a guide rail is provided on the fixing part. The guide rail is arranged along the first direction, and a slider that is slidably matched with the guide rail is provided on the translation part.

[0016] To achieve the above object and other related objects, the present utility model further provides an auxiliary positioning device, which is applied to a medical imaging device. The medical imaging device includes a radiation source and an imaging plate; the auxiliary positioning device includes the light source device described above. The fixing part is installed on one side of the imaging plate. The first direction and the first axis are respectively parallel to the imaging plate, and the radiation source is located in the target area.

[0017] In an alternative embodiment of the present utility model, at least two light source devices are provided, and the moving directions of the translation parts of at least two light source devices are arranged at an angle.

[0018] To achieve the above object and other related objects, the present utility model further provides a medical imaging device, including the auxiliary positioning device described above.

[0019] The technical effect of the present utility model is that: according to the scattering law of the radiation source, the present utility model retraces 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the working principle diagram of the auxiliary positioning device provided by the embodiment of the present utility model;

[0021] Figure 2It is a schematic structural diagram of the auxiliary positioning device provided by the embodiment of the present utility model;

[0022] Figure 3 It is a schematic side structural diagram of the light source device provided by the embodiment of the present utility model;

[0023] Figure 4 It is a schematic bottom structural diagram of the light source device provided by the embodiment of the present utility model. Specific embodiments

[0024] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand 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 implementation manners. 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.

[0025] It should be noted that the diagrams 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 diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be an arbitrary change, and the component layout type may also be more complex.

[0026] An X-ray medical imaging device (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 (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 device. It consists 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 usually can adjust the angle and position to image different parts. The X-ray detector is used to receive the X-rays that pass through the patient's body and convert them into electrical signals or digital signals to capture the image information after X-ray transmission. 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.

[0027] The X-ray medical imaging device 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 human tissues and are absorbed to different degrees by tissue parts with different densities, forming a transmission 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.

[0028] 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 human tissues and are projected onto the imaging plate 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, there will also be slight changes in the relative positions of various tissue structures in the medical image. 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.

[0029] Please refer to Figures 1-3 shown below. The technical solution of the present utility model will be described in detail with specific embodiments:

[0030] Please refer to Figure 1 and 2 shown. An embodiment of the present utility model provides a medical imaging device, specifically an X-ray medical imaging device, which includes a ray source 10, an imaging plate 20, and an auxiliary positioning device. The ray 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 drawings.

[0031] Please refer to Figure 1As shown above, it has been mentioned that the rays generated by the ray 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 ray 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-mentioned 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 sets 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 the first plane light beam a and the second plane light beam b respectively. The projections of these two light beams on the human body 40 form two intersecting straight lines L1 and L2. Among them, the first plane light beam a is parallel to the y-axis and can rotate around the y-axis, and the second plane 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 plane light beam a and the second plane light beam b pass through the ray source 10 during the translation process. At this time, one of the light sources 33 is adjusted along the x-axis to a position flush with the feature 22, and the other light source 33 is adjusted along the y-axis to a position flush with the feature 22. The intersection point of the obtained straight line L1 and the straight line L2 is the true position of the organ tissue corresponding to the above-mentioned feature 22 on the human body 40. Here, the plane light beam refers to a light beam that is within a plane and can form a certain shaped surface. For example, a light beam that itself forms a fan-shaped shape. Exemplarily, a fan-shaped light beam generated by a cross-line laser.

[0032] In a preferred embodiment, the above-mentioned 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 short 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 them.

[0033] The following will specifically describe how the working process of the above-mentioned auxiliary positioning device is realized in combination with the specific structure of the auxiliary positioning device:

[0034] Please refer to Figure 1 、 2 As shown in FIGS. 3, the auxiliary positioning device provided by the embodiment of the present utility model includes two light source devices 30. The two light source devices 30 are respectively installed at the edge of the imaging plate 20. The structures of the two light source devices 30 are the same, but the installation postures are different.

[0035] As Figure 3As shown, taking one of the light source devices 30 as an example, the structure of the light source device 30 will be described first. The light source device includes a fixing part 31, a translation part 32, a rotation part 39, a light source 33, and a driving mechanism; the translation part 32 is movably connected to the fixing part 31 along a first direction; the rotation part 39 is rotationally connected to the translation part 32 along a first axis, and the first axis is perpendicular to the first direction; the light source 33 is fixedly installed on the rotation part 39, and the light source 33 is configured to be able to emit a planar light beam, and the planar light beam is parallel to the first axis; the driving mechanism is used to drive the translation part 32 to translate along the first direction and drive the rotation part 39 to rotate along the first axis, so that the planar light beam can always pass through a preset target area, and this target area 100 is the area where the radiation source 10 is located. It should be noted that the above-mentioned first direction and first axis are a relative reference defined for the convenience of description, and their actual directions change with 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, the first axis is parallel to the y-axis, and the first direction of the other light source device 30 is parallel to the y-axis, and the first axis is parallel to the x-axis.

[0036] Please refer to Figure 1 , 2 As 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 moving directions of the translation 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, and the planar light beam of the other light source device 30 forms Figure 1 the second planar light beam b shown.

[0037] It should be noted that the number of the 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 determine the position of the area by locating multiple points on the edge of the area.

[0038] Please refer to Figure 3As shown, in an alternative embodiment of the present utility model, the drive mechanism includes a motor 34, a pulley 35, and a synchronous belt 36. The motor 34 and the pulley 35 are mounted on the translation part 32. The pulley 35 is in transmission connection with the output shaft of the motor 34. Both ends of the synchronous belt 36 are fixedly connected to the fixed part 31, and the synchronous belt 36 meshes with the pulley 35. It should be understood that the length direction of the synchronous belt 36 should be arranged substantially along the first direction. When the pulley 35 rotates, the pulley 35 rolls relative to the synchronous belt 36, thereby driving the translation part 32 to move along the first direction.

[0039] The use of the synchronous belt 36 ensures an accurate transmission ratio between the rotational movement of the pulley 35 and the translational movement of the translation part 32. Furthermore, the translational movement of the translation part 32 can be precisely controlled by the rotation of the motor 34 along the first direction. This is crucial for the light source 33 device in medical equipment that requires precise positioning and control, ensuring the accuracy and repeatability of operations. The combined design of the motor 34, pulley 35, and synchronous belt 36 is simple and stable, reducing the likelihood of failures and maintenance. This is particularly important in medical equipment as they usually need to operate stably for a long time without frequent maintenance interventions. The transmission method of the synchronous belt 36 operates more smoothly and produces relatively less noise compared to other transmission methods (such as gear transmission or chain transmission). This is very important for the medical environment as it can reduce the interference of the equipment operation to the environment and operators. This drive structure can be relatively easily adjusted and customized according to the requirements of different medical equipment. The length of the synchronous belt 36 and the size of the pulley 35 can be selected according to specific requirements to meet different translational distances and speed requirements. The power of the motor 34 is transmitted to the translation part 32 through the pulley 35 and the synchronous belt 36, with a relatively high conversion efficiency, ensuring the stable translational movement of the light source 33 device and low energy consumption.

[0040] Please refer to Figure 4As shown, in an alternative embodiment of the present utility model, it further includes a guide wheel 37. The guide wheel 37 is rotatably connected to the translation part 32. The guide wheel 37 is in contact with the synchronous belt 36, and the guide wheel 37 is assembled to be able to bend the synchronous belt 36 on at least one side of the pulley 35, so as to increase the wrap angle between the synchronous belt 36 and the pulley 35. The guide wheel 37 ensures that the synchronous belt 36 fits tightly around the pulley 35 and keeps a stable wrap angle (i.e., the angle at which the synchronous belt 36 contacts the pulley 35), which helps to prevent the synchronous belt 36 from slipping or bouncing during movement, thereby enhancing the accuracy and stability of the movement. By increasing the wrap angle between the synchronous belt 36 and the pulley 35, vibrations and noises during transmission can be reduced, which is very important for applications in medical devices that require low-noise operation and helps to improve the comfort of patients and operators. The guide wheel 37 makes the force on the synchronous belt 36 more uniform, reduces the wear and aging speed of the synchronous belt 36, thereby extending the service life of the entire drive system and reducing the frequency of maintenance and replacement. By optimizing the wrap angle of the synchronous belt 36, energy loss and heat generation can be reduced, and the drive efficiency can be improved, thus achieving more energy-efficient operation in medical devices. The use of the guide wheel 37 makes the entire drive system more stable and reliable, reduces accidental failures and downtime, and ensures the continuous availability and reliability of medical devices.

[0041] Please refer to Figure 4 As shown, in an alternative embodiment of the present utility model, at least two of the guide wheels 37 are symmetrically arranged on both sides of the pulley 35. This can ensure that the loads on the pulley during the reciprocating movement of the translation part 32 are consistent, further improving the control accuracy. It should be understood that in some other embodiments, one or more guide wheels 37 can also be provided.

[0042] Please refer to Figure 3As shown, in an alternative embodiment of the present utility model, the driving mechanism further includes a worm gear (not shown in the figure, and the actual position should coincide with the rotating part) and a worm 38. The worm 38 is drivingly connected to the output shaft of the motor 34. The worm gear is fixedly connected to the rotating part 39, and the worm gear meshes with the worm 38. This structure can achieve a large reduction ratio while maintaining high-efficiency conversion, enabling the driving light source 33 to rotate in a stable and reliable manner. The worm gear and worm 38 transmission system operates very smoothly, with almost no impact and vibration, which is particularly important for applications in medical equipment that require the light source 33 to operate smoothly and without noise, and helps to improve the operating comfort and the patient's treatment experience. The worm gear and worm 38 transmission system has a compact structure and can achieve a large reduction ratio within a limited space, making it suitable for application scenarios with high space requirements such as medical equipment. The worm gear and worm 38 transmission system has a high self-locking property, which can prevent the driven component from moving in the reverse direction even when the motor 34 stops, enhancing the safety and reliability of the driving system. The worm gear and worm 38 transmission system generally has a long service life due to low friction losses, and requires less maintenance and servicing, which is very beneficial for the reliability and operating cost of medical equipment.

[0043] Please refer to Figure 3 As shown, in an alternative embodiment of the present utility model, the worm 38 is coaxially and fixedly connected to the belt pulley 35. This embodiment integrates the rotation and translation functions of the light source 33 into the same motor 34 driving system. Through unified design and layout, it is possible to save the internal space of the device, making the device structure more compact and concise. Using the same motor 34 to drive two motion states avoids additional motors 34 and transmission structures, simplifies the complexity of the entire system, reduces the possibility of failures, and improves the reliability of the system. By driving two motion states simultaneously with one motor 34, it is possible to achieve multi-functional driving of the light source 33, and avoid the coupling problem between different components, improving the energy utilization rate and the overall working efficiency. Since two motion states are driven by the same motor 34, the control system can be uniformly managed, and the control is simple and convenient, making the operation more convenient and efficient.

[0044] Please refer to Figure 3 、 4 As shown, in an alternative embodiment of the present utility model, a guide rail 311 is provided on the fixing part 31. The guide rail 311 is arranged along the first direction, and a slider 321 that slidably cooperates with the guide rail 311 is provided on the translation part 32. The design of the guide rail 311 and the slider 321 ensures the accuracy and stability of the translation of the light source 33, and can accurately control the movement of the light source 33 in the required direction, meeting the high requirements for position accuracy in medical equipment.

[0045] In summary, according to the scattering law of the radiation source 10, the present utility model retroactively traces the ray path corresponding to the lesion position 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. The present utility model integrates the rotation and translation functions of the light source 33 into the same motor drive system. Through unified design and layout, it can save the internal space of the device and make the device structure more compact and concise.

[0046] The above embodiments are merely illustrative of the principles and effects of the present utility model, and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model. In addition, the nouns and pronouns related to people in this disclosure are not limited to specific genders.

[0047] In the description herein, numerous specific details are provided, such as examples of components and / or methods, to provide a complete understanding of the embodiments of the present utility model. However, those skilled in the art will recognize that the embodiments of the present utility model can be practiced without one or more of the specific details or by other devices, systems, components, methods, parts, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present utility model.

Claims

1. A light source device, characterized in that: include: Fixed part; A translation part, movably connected to the fixed part along a first direction; A rotating part, rotatably connected to the translation part along a first axis, wherein the first axis is perpendicular to the first direction; a light source fixedly mounted on the rotating portion, wherein the light source is configured to emit a plane light beam parallel to the first axis; The driving mechanism is used to drive the translation part to translate along the first direction, and drive the rotation part to rotate along the first axis, so that 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 motor, a pulley and a synchronous belt. The motor and the pulley are installed on the translation part. The pulley is transmission-connected to the output shaft of the motor. Both ends of the synchronous belt are fixedly connected to the fixing part, and the synchronous belt is meshed with the pulley.

3. The light source device according to claim 2, characterized in that: It also includes a guide wheel, which is rotationally connected to the translation part, fits the synchronous belt, and is assembled to be able to bend the synchronous belt on at least one side of the pulley to increase the wrap angle between the synchronous belt and the pulley.

4. The light source device according to claim 3, characterized in that: At least two guide wheels are symmetrically arranged on both sides of the pulley.

5. The light source device according to claim 2, characterized in that: The driving mechanism further comprises a worm wheel and a worm, wherein the worm is drivingly connected to the output shaft of the motor, the worm wheel is fixedly connected to the rotating part, and the worm wheel is meshed with the worm.

6. The light source device according to claim 5, characterized in that: The worm is coaxial with the pulley and is fixedly connected.

7. The light source device according to claim 1, characterized in that: The fixing part is provided with a guide rail, and the guide rail is arranged along the first direction. The translation part is provided with a sliding block that slidably cooperates with the guide rail.

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 first axis 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 movable directions of the translation parts of at least two 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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