Mounting position detection device for a medical system and medical system
Patent Information
- Application Number
- CN202521678444.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-07
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-08-07
AI Technical Summary
然而，该方法存在明显的局限性
[0016] This application achieves precise calibration of the position of the bed itself and its positional relationship with the frame by setting a calibrated position signal transmitter and a position signal receiver along the entire length of the bed at the front and rear ends, respectively, and by using a signal path component located between the two. The overall cost is low.
Smart Images
Figure CN224731264U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical technology, and in particular to an installation positioning detection device and medical system. Background Technology
[0002] In the installation and commissioning of some medical equipment, such as computed tomography (CT) equipment, the relative positional relationship between the scanning bed and the gantry has a significant impact on imaging quality, positioning accuracy, and the stability of equipment operation. To ensure the normal operation and imaging performance of CT equipment, the scanning bed and gantry are usually required to meet the following three key conditions during installation: (1) The upper surface of the scanning bed is parallel to the center plane of the gantry, and the two planes are kept at a predetermined distance in the vertical direction; (2) The vertical center plane of the scanning bed coincides with the vertical center plane of the gantry; (3) The scanning bed as a whole must be kept horizontal, that is, its upper surface is in the horizontal plane in space.
[0003] Currently, the industry commonly uses laser positioning devices to detect and calibrate the aforementioned installation conditions. Specifically, a laser emitter is installed at the head of the scanning bed, and the laser beam is projected onto marked points on the frame or a reference wall to determine whether the relative position between the scanning bed and the frame meets the requirements. However, this method has significant limitations. Because the laser positioning device is only installed at the head of the scanning bed, it can only reflect the geometric relationship between the head section and the frame, and cannot accurately reflect the horizontal state of the tail section of the scanning bed or its parallelism and alignment with the frame. Especially when the scanning bed is long, lacks rigidity, or has slight bends, the tail section may tilt or shift, causing the actual installation state to deviate from the design requirements.
[0004] Therefore, there is an urgent need to develop a more accurate and comprehensive scanning bed and rack installation detection device to overcome the limitations of existing technologies that rely solely on head-of-bed laser detection, ensuring that the scanning bed maintains the correct spatial relationship with the rack throughout its entire length, thereby improving the installation accuracy and operational performance of such medical equipment. Utility Model Content
[0005] In view of the shortcomings of the prior art described above, the purpose of this application is to provide an installation positioning detection device and medical system to solve one or more technical problems of the prior art.
[0006] To achieve the above and other related objectives, this application provides an installation positioning detection device for a medical system, comprising: a calibrated position signal transmitter for forming a horizontal signal plane perpendicular to each other and a vertical signal plane perpendicular to them; a signal path component including a signal channel for allowing signals in the horizontal and vertical signal planes to pass through; and a position-to-be-calibrated signal receiver for receiving signals passing through the signal path component.
[0007] In some aspects, the calibrated position signal transmitter includes a cross laser transmitter, and both ends of the calibrated position signal transmitter are provided with positioning parts that are fixed to the medical system.
[0008] In some aspects, the signal path of the signal path component includes a horizontal channel and a vertical channel for signals in the horizontal signal plane and the vertical signal plane to pass through, respectively, with the vertical channel located between the two sets of horizontal channels.
[0009] In some respects, each set of horizontal channels includes at least two light-transmitting channels at different vertical heights, and the light-transmitting channels at different vertical heights of one set of horizontal channels are aligned horizontally with the light-transmitting channels at different vertical heights of the other set of horizontal channels.
[0010] In some aspects, the signal path element includes a positioning element located at one end of the signal path element away from the horizontal channel.
[0011] In some respects, the positioning element is located on the path of the vertical channel extending in the vertical direction.
[0012] In some aspects, the signal receiving unit for the position to be calibrated includes a horizontal arm and vertical arms extending downward from both ends of the horizontal arm. The horizontal arm is provided with a first receiver and a second receiver for receiving signals passing through the signal path member. The number of the first receivers is at least two and they are distributed on both sides of the second receiver.
[0013] In some respects, each of the vertical arms is provided with a position adjustment part at different vertical heights, and the position adjustment part at different vertical heights on one vertical arm is aligned in the horizontal direction with the position adjustment part at different vertical heights on the other vertical arm.
[0014] In some aspects, the position signal receiving unit to be calibrated includes a plug for fixing corresponding to the position adjustment unit on the vertical arm, so as to fix the laser receiving unit at the desired position of the medical system.
[0015] For the purposes of this application, this application also provides a medical system, including: the installation positioning detection device as described above; a medical image acquisition device including a frame, the frame including an assembly part for fixing to the calibrated position signal transmitter; a bed, which has a mating part for fixing the signal path component at one end near the medical image acquisition device, and the position signal receiver to be calibrated is adjustablely disposed at one end of the bed away from the medical image acquisition device.
[0016] This application achieves precise calibration of the position of the bed itself and its positional relationship with the frame by setting a calibrated position signal transmitter and a position signal receiver along the entire length of the bed at the front and rear ends, respectively, and by using a signal path component located between the two. The overall cost is low. Attached Figure Description
[0017] Figure 1 A schematic diagram illustrating an application scenario of the medical system and its installation positioning detection device provided in an embodiment of this application;
[0018] Figure 2 This is a schematic diagram of the signal path device provided in an embodiment of this application, viewed along the x-axis from the tail end to the head end of the bed.
[0019] Figure 3 This is a schematic diagram of a bed provided in an embodiment of this application, viewed along the x-axis from the head end to the tail end of the bed.
[0020] Figure 4 This is a schematic diagram of a signal receiving unit provided in an embodiment of this application, viewed along the x-axis from the head end to the tail end of the bed.
[0021] Figure 5 This is a schematic diagram of the frame provided in one embodiment of the present application, viewed along the x-axis from the tail end to the head end of the bed. Detailed Implementation
[0022] The following specific examples illustrate the implementation of this application. Those skilled in the art can readily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.
[0023] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0024] In the following description, numerous details are explored to provide a more thorough explanation of the embodiments of this application. However, it will be apparent to those skilled in the art that the embodiments of this application can be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring the embodiments of this application. To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and should not be considered as limitations on this application.
[0025] like Figure 1 The diagram shown is an application scenario illustration of a medical system and its installation positioning detection device provided in an embodiment of this application. The medical system 1 includes a medical image acquisition device 10, a bed 20, and an installation positioning detection device 30. In this embodiment, the medical system 1 is a CT device, but those skilled in the art should understand that the system can also be a magnetic resonance imaging (MRI) device, a radiotherapy device (such as a linear accelerator), or other medical devices that require precise control of the relative position of the bed and the imaging or treatment gantry.
[0026] The medical image acquisition device 10 includes a gantry 101, which houses an X-ray source and a detector (not shown in the figure) for rotating around the patient to acquire tomographic images. A bed 20 is slidably movable in and out of the central channel of the gantry 101 in a horizontal direction (x-axis direction in the figure) to carry the patient and move them into the scanning area. In some embodiments, the bed 20 is also movable in a vertical direction (z-axis direction in the figure) to adjust its height and elevate the patient from a low position to a scanning position movable towards the gantry 101.
[0027] The inventors of this application have discovered that in the prior art, medical devices such as CT scanners typically only have laser positioning devices for emitting and receiving laser signals at the front end of the gantry and at the end of the bed closest to the gantry, respectively, to calibrate the stability of the bed head and its position relative to the gantry. However, in actual clinical applications, due to the length of the bed, it may tilt, shift, or bend during installation or long-term use. Relying solely on front-end laser positioning cannot effectively detect positional deviations at the rear of the bed, leading to inaccurate scanning plane positioning. This can result in a dangerous situation where the bed collides with the gantry during the process of the bed entering the gantry openings.
[0028] To address the aforementioned issues, this application creatively designs an installation positioning detection device 30, also known as an "installation positioning accuracy detection device." This device is used to detect the overall position of the bed 20 and its relative position to the frame 101, with particular attention to the positional consistency between the bed and the frame along the entire length of the bed. The installation positioning detection device 30 includes a signal transmitter 301 positioned at the front end or front wall of the frame 101 (i.e., near the end of the bed), a signal path component 302 mounted on the front end of the bed 20 near the frame 101, and a signal receiver 303 for the position to be calibrated mounted at the rear end of the bed 20 (away from the frame). In some embodiments, the calibrated position signal transmitter 301 is, for example, a laser signal generator, and the position signal receiver 303 to be calibrated is correspondingly a laser signal receiver. The signal path 302 is used to allow the desired laser from the calibrated position signal transmitter 301 to pass through and reach the position signal receiver 303 to calibrate the position relationship between the calibrated or installed frame 101 and the entire bed 20. Therefore, when the calibrated position signal transmitter 301 and the position signal receiver 303 to be calibrated can establish a connection using the signal passing through the signal path 302, it indicates that the position calibration of the frame and the bed is complete.
[0029] Specifically, the following uses the calibrated position signal transmitter 301 as a laser signal generator and the position signal receiver 303 to be calibrated as a laser signal receiver as an example to illustrate the specific principle of this embodiment in this application.
[0030] Continue to refer to Figure 1As shown, the calibrated position signal transmitter 301 is used to form a horizontal signal plane that is perpendicular to each other and a vertical signal plane that is perpendicular to it. Referring to the xyz axes in the figure, the horizontal signal plane corresponds to plane H defined by the xy axis, and the vertical plane is plane V defined by the xz axis; the two intersect to form a cross plane. In some aspects, the calibrated position signal transmitter 301 includes a cross laser emitter 3010, and both ends of the calibrated position signal transmitter 301 are provided with positioning parts 3011 fixed to the frame 101. The cross laser emitter 3010 is configured to emit a cross-shaped laser beam across the cross plane, including a horizontal laser plane (for indicating left and right directions) and a vertical laser plane (for indicating up and down directions), corresponding to plane H and plane V respectively. The positioning parts 3011 are used to detachably mount the calibrated position signal transmitter 301 onto the frame 101. The positioning part 3011 can be designed as a snap-fit structure, a threaded connector, a magnetic assembly, etc., to achieve quick alignment and secure connection with the corresponding mating structure on the frame 101. The mating structure, for example... Figure 5 The screw hole 1010 in the middle can be fixed by a knob, locking screw or magnetic attraction.
[0031] In some aspects, the calibrated position signal transmitter 301 may be equipped with a level or electronic tilt sensor (not shown) for real-time monitoring of its own installation attitude. When tilting of the calibrated position signal transmitter 301 is detected, a warning can be issued to the user, reminding the user to readjust its position. By detachably fixing the signal transmitter 301 to the frame 101, a stable and conveniently installed position signal transmission can be achieved.
[0032] Combination Figure 2As shown, the signal path of the signal path component 302 includes a horizontal path 3021 and a vertical path 3022, which are used to allow signals in the horizontal signal plane and the vertical signal plane to pass through respectively. In this embodiment, the horizontal path 3021 and the vertical path 3022 are gaps formed on the signal path component 302. The vertical path 3022 is located between two sets of horizontal paths 3021. Each set of horizontal paths 3021 includes at least two light-transmitting channels C located at different vertical heights, and the light-transmitting channels C at different vertical heights of one set of horizontal paths 3021 are aligned horizontally with the light-transmitting channels C at different vertical heights of the other set of horizontal paths 3021. Through the light-transmitting channels C at different vertical heights, signals emitted by the calibrated position signal transmitters 301 located on different types of racks can pass through and reach the signal receivers 303 to be calibrated, so as to verify that the upper surface of the bed 20 is parallel to the central plane of the rack 101. The vertical channel 3022 is used to allow signals in the vertical signal plane to pass through and reach the signal receiving unit 303 of the position to be calibrated, so as to verify that the vertical center plane of the bed 20 coincides with the vertical center plane of the frame 101. By combining the horizontal channel 3021 and the vertical channel 3022, it can be verified that the bed 20 as a whole is in a horizontal state. Therefore, when the signal receiving unit 303 of the position to be calibrated located at the tail of the bed 20 can simultaneously receive the signals 3022 passing through the horizontal channel 3021 and the vertical channel of the signal path 302, it can be proved that the positional relationship between the bed 20 and the frame 101 has met the expected requirements, namely: (1) the upper surface of the bed is parallel to the center plane of the frame, and the two planes maintain a predetermined distance in the vertical direction; (2) the vertical center plane of the bed coincides with the vertical center plane of the frame; (3) the bed as a whole needs to maintain a horizontal state, that is, its upper surface is in a horizontal plane in space.
[0033] In some aspects, the signal path component 302 includes a positioning component 3023 located at one end of the signal path component 302 away from the horizontal channel 3021. The positioning component 3023 is used to fix the signal path component 302 to the head end of the bed body 20, i.e., the end of the bed body 20 near the frame 101. In further embodiments of this application, such as... Figure 3The diagram shows a view of the bed frame 20 along the x-direction from the head end to the tail end. To effectively utilize the existing structural design of the bed frame 20 and achieve rapid and stable installation and removal of the signal path component 302, the positioning component 3023 is configured to match and fix with the headrest interface 201 already provided at the head end of the bed frame 20. The headrest interface 201 is typically a standard interface used on medical equipment such as CT scanning beds for installing detachable headrests. Its structural form can be a dovetail groove, snap-fit groove, magnetic interface, or multi-pin positioning hole, and it is widely used for patient head fixation and positioning on beds. The positioning component 3023 is configured with a mechanical mating structure adapted to the headrest interface 201, such as a protruding latch, elastic pin, or magnetic connector, allowing the positioning component 3023 to be directly inserted into or snapped into the headrest interface 201, achieving axial limiting and radial fixation. By utilizing the existing headrest interface 201, there is no need to drill additional mounting holes on the bed, weld brackets, or use clamps for fixation, thus avoiding modifications to the original equipment structure, reducing installation complexity, and maintaining the cleanliness and structural integrity of the equipment's appearance. Figure 2 As shown, in some respects, the positioning element 3023 is located on the path of the vertical channel 3022 extending in the vertical direction to facilitate the establishment of the left-right symmetry and stability of the signal path element 302, while ensuring the pluggable connection between the signal path element 302 and the bed body 20.
[0034] Furthermore, such as Figure 3 As shown, for easy disassembly, an unlocking button 202 is provided on one side of the bed frame (e.g., the outer wall or upper surface). The unlocking button 202 is connected to the positioning element 3023 via a mechanical linkage structure (e.g., a push rod, lever, or elastic arm). When the user needs to remove the positioning element 3023 of the signal path element 302 from the headrest interface 201 of the bed frame 20, they only need to press the unlocking button 202 with their finger to trigger the locking component to retract or release, releasing the locked state with the headrest interface 201. Then, the entire positioning element 3023 can be easily pulled out in the reverse direction of insertion. The unlocking button 202 is positioned in a location easily accessible to the operator, and its surface can be designed with a non-slip texture or raised structure for easy operation while wearing gloves. The unlocking button 202 itself can have a built-in return spring, automatically returning to the initial position after the external force is removed, ensuring that the locking mechanism can automatically restore its locking function upon the next installation. This type of unlocking button is an existing button used to release the headrest (not shown) from the headrest interface 201, and therefore will not be described further here. The signal path component 302 of this application enables a "plug-and-play" connection between the positioning component 3023 thereon and the bed frame 20, which not only significantly improves the efficiency of installation and disassembly, but also makes full use of the original structure of the bed frame, avoiding the space occupation, cost increase and potential safety hazards caused by additional structures.
[0035] like Figure 4 The image shown is a front view of a signal receiving section provided in an embodiment of this application, i.e., along... Figure 1 A schematic diagram viewed from the head to the tail end of the bed frame 20 in the x-direction. The signal receiving unit 303 for the position to be calibrated includes a horizontal arm 3031 and vertical arms 3032 extending downward from both ends of the horizontal arm 3031. The horizontal arm 3031 is provided with a first receiver 3033 and a second receiver 3034 for receiving signals passing through the signal path member 302. The number of first receivers 3033 is at least two and they are distributed on both sides of the second receiver 3034. More specifically, the first receivers 3033 are used to receive signals passing through the vertical channel 3022 of the signal path member 302, and the second receivers 3034 are used to receive signals passing through the horizontal channel 3021 of the signal path member 302. Furthermore, the two second receivers 3034 are respectively used to receive two sets of signals from the calibrated position signal transmitter 301 and horizontally passing through the horizontal channel 3021 at the same height on the signal path 302. For example, the first receiver 3033 on the left is used to receive the signal passing through the left horizontal channel 3021, and the first receiver 3033 on the right is used to receive the signal passing through the right horizontal channel 3021. By identifying whether signals passing through the horizontal channel 3021 and the vertical channel 3022 can be received by the first receiver 3033 and the second receiver 3034 respectively, it is possible to accurately and conveniently identify whether the bed body 20 itself and its positional relationship relative to the frame 101 meet the expected standards.
[0036] In some aspects, each of the vertical arms 3032 is provided with position adjustment parts 3035 at different vertical heights, and the position adjustment parts 3035 at different vertical heights on one vertical arm 3032 are aligned horizontally with the position adjustment parts 3035 at different vertical heights on the other vertical arm 3032, i.e., they are on the same horizontal line. The position signal receiving unit 303 to be calibrated also includes a plug-in 3036 for fixing corresponding to the position adjustment parts 3035 on the vertical arm 3032, so as to fix the position signal receiving unit 303 to be calibrated at the desired position of the bed 20. The position adjustment part 3035 may be a through hole, a groove, a threaded hole, or a snap-fit structure for connecting the plug-in 3036. In one embodiment of this application, the position adjustment part 3035 is a through groove extending in its front-back direction, and the plug-in 3036 is a insert (such as a plate) adapted to be inserted and removed therein. Figure 1(As shown). The position adjustment parts 3035 on the two vertical arms 3032 are respectively arranged in pairs in the horizontal direction, that is, the position adjustment part 3035 at a certain height on one vertical arm 3032 is aligned with the position adjustment part 3035 at the same or matching height on the other vertical arm 3032 in the horizontal extension direction. This symmetrical arrangement design allows the position adjustment parts 3035 to be stably installed and horizontally aligned, and through the arrangement of the position adjustment parts 3035 and the plug-in 3036, the position and height of the position signal receiving unit 303 to be calibrated on the bed 20 can be flexibly adjusted.
[0037] return Figure 1 As shown, combined with Figure 5 To achieve the purpose of this application, this application also provides a medical system 1, which includes: an installation positioning detection device 30 as described above; a medical image acquisition device 10, which includes an assembly part 1010 for fixing to the signal transmitting part 301; and a bed 20, which has a mating part 201 for fixing the signal path component 302 at one end near the medical image acquisition device 30.
[0038] In summary, the installation positioning detection device and medical system for medical systems of this application, through the inventive design of the calibrated position signal transmitter, signal path component, and the position-to-be-calibrated signal receiver, can provide the following beneficial technical effects:
[0039] First, traditional technologies typically rely solely on laser positioning devices at the front of the frame, making it difficult to effectively detect positional deviations at the rear or middle of the bed. This application addresses this by installing calibrated position signal transmitters and uncalibrated position signal receivers along the entire length of the bed at both the front and rear ends, and using a signal path component located between them. This achieves precise calibration of the bed itself and its positional relationship with the frame, all at a low overall cost.
[0040] Secondly, by setting vertical and horizontal channels on the signal communication components, especially dual horizontal channels that are symmetrically positioned at different horizontal heights, and combining the coordinated work of the first and second receivers (such as the second receivers located to the left and right of the second receiver) of the signal receiving unit for the position to be calibrated, it is possible to detect the positional deviation of the bed relative to the frame in the vertical direction (z-axis height), the lateral direction (x-axis offset), and the potential tilt or twist state, thereby achieving all-round attitude monitoring in three-dimensional space and providing reliable assurance for accurate positioning and scanning.
[0041] Third, all components of the positioning and detection device, including the calibrated position signal transmitter, signal path component, and the position signal receiver to be calibrated, are detachably fixed, making installation convenient and easy. Furthermore, the positioning component of the calibrated position signal transmitter can be matched and fixed with the existing head support interface at the head end of the bed, making full use of the existing structure and avoiding the need to add extra supports or make mechanical modifications for installing the detection device, thus reducing installation complexity and cost while maintaining the integrity of the original structure of the equipment.
[0042] Fourth, the vertical arm of the signal receiving unit for the position to be calibrated is equipped with multiple position adjustment parts at different heights, and they are symmetrically arranged on both sides to receive signals at different heights passing through the signal path components, so as to adapt to different models of beds or different clinical application needs, thereby enhancing the versatility and compatibility of the system.
[0043] Fifth, the signal path device guides the directional transmission of laser or other signals through a physical channel (a slit in this application), which improves the stability of signal reception and the reliability of detection results.
[0044] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.
Claims
1. An installation positioning and detection device for a medical system, characterized in that, include: The calibrated position signal transmitter is used to form a horizontal signal plane that is perpendicular to each other and a vertical signal plane that is perpendicular to it. A signal path component, comprising a signal channel for allowing signals in the horizontal signal plane and the vertical signal plane to pass through; The position signal receiving unit is used to receive signals passing through the signal path member.
2. The installation positioning detection device according to claim 1, characterized in that, The calibrated position signal transmitter includes a cross laser transmitter, and both ends of the calibrated position signal transmitter are provided with positioning parts that are fixed to the medical system.
3. The installation positioning detection device according to claim 1, characterized in that, The signal path of the signal path component includes a horizontal channel and a vertical channel, which are used to allow signals in the horizontal signal plane and the vertical signal plane to pass through, respectively. The vertical channel is located between the two sets of horizontal channels.
4. The installation positioning detection device according to claim 3, characterized in that, Each set of horizontal channels includes at least two light-transmitting channels at different vertical heights, and the light-transmitting channels at different vertical heights in one set of horizontal channels are aligned horizontally with the light-transmitting channels at different vertical heights in the other set of horizontal channels.
5. The installation positioning detection device according to claim 3, characterized in that, The signal path component includes a positioning element located at one end of the signal path component away from the horizontal channel.
6. The installation positioning detection device according to claim 5, characterized in that, The positioning element is located on the path of the vertical channel extending in the vertical direction.
7. The installation positioning detection device according to claim 1, characterized in that, The signal receiving unit for the position to be calibrated includes a horizontal arm and vertical arms extending downward from both ends of the horizontal arm. The horizontal arm is provided with a first receiver and a second receiver for receiving signals passing through the signal path member. The number of the first receivers is at least two and they are distributed on both sides of the second receiver.
8. The installation positioning detection device according to claim 7, characterized in that, Each of the vertical arms is provided with a position adjustment part at different vertical heights, and the position adjustment part at different vertical heights on one vertical arm is aligned in the horizontal direction with the position adjustment part at different vertical heights on the other vertical arm.
9. The installation positioning detection device according to claim 8, characterized in that, The position signal receiving unit to be calibrated includes a plug for fixing to correspond with the position adjustment unit on the vertical arm, so as to fix the position signal receiving unit to be calibrated at the desired position of the medical system.
10. A medical system, characterized in that, include: The installation positioning detection device as described in any one of claims 1-9; A medical image acquisition device includes a frame, the frame including an assembly for fixing to the calibrated position signal transmitter; The bed has a mating part for fixing the signal path component at one end near the medical image acquisition device, and the signal receiving part for the position to be calibrated is adjustablely located at the end of the bed away from the medical image acquisition device.