Positioning device for registration and fusion of multi-modal medical images
By introducing mechanical structures such as guide rails, sliders, and airbags into the multimodal medical image fusion device, the problem of poor position repeatability in existing technologies has been solved, and high-precision image registration and fusion have been achieved.
Patent Information
- Application Number
- CN202511811543.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-01-30
AI Technical Summary
Existing multimodal medical image fusion solutions lack physical positioning structures and rely entirely on software algorithms for spatial transformation and registration. This results in accuracy being affected by the repeatability of patient positioning, making it difficult to achieve precise image alignment.
A positioning device for registration and fusion of multimodal medical images was designed, including a transport plate and a support, and equipped with components such as guide rails, sliders, airbags and locking components. The device fixes the patient's position through mechanical structure, restricts micro-movements of the body, and ensures the repeatability of the position.
It significantly improves the repeatability of body positioning, achieves perfect image registration, provides high-precision support for multimodal image fusion, and reduces the randomness of manual positioning and the influence of operational experience.
Smart Images
Figure CN121421787A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of image auxiliary equipment, in particular to a positioning device for registration and fusion of multi-modal medical images. BACKGROUND
[0002] Multi-modal medical image fusion technology (such as CT and MRI fusion) is an important support for modern clinical diagnosis and treatment. CT is good at clearly presenting bone structure, lung and other high-density tissue details, and can accurately reflect tissue density differences to provide a basis for judging bone lesions, lung nodules, etc. MRI has obvious advantages in imaging of brain tissue, muscle, and soft organs, and can clearly show the correlation between lesions and surrounding soft tissues such as nerves and blood vessels. The core of this technology relies on software algorithms, which can register the positional deviation of images of different modalities caused by differences in acquisition scenes and equipment through rigid or non-rigid spatial transformation, accurately align anatomical structures, superimpose the advantages of the two types of images, and provide comprehensive and three-dimensional information for disease diagnosis (such as tumor staging), surgical planning (such as precise positioning in brain surgery), and radiotherapy (such as precise delineation of target area), helping to make more accurate and scientific clinical decisions.
[0003] The existing mainstream multi-modal image fusion scheme lacks a physical positioning structure and completely relies on software algorithms for spatial transformation and registration of images after acquisition. However, the accuracy of software registration is highly dependent on the repeatability of patient position, forming a significant technical shortcoming. Since there is no mechanical component to constrain the position of the support and the patient's posture, the patient's position is entirely dependent on manual positioning by medical staff. This process is easily affected by subjective factors such as experience and fatigue level. Moreover, during transportation or examination, slight body movements or head rotation of the patient cannot be restricted by physical structures, further expanding the positional deviation. When the positional deviation between two scans exceeds the algorithm compensation threshold, even with the best algorithm, it is difficult to achieve accurate image alignment, resulting in misalignment of anatomical structures in the fused image, which cannot provide reliable evidence for disease diagnosis and surgical planning. SUMMARY
[0004] The purpose of the present application is to provide a positioning device for registration and fusion of multi-modal medical images to solve the problem of the existing mainstream multi-modal image fusion scheme lacking a physical positioning structure and completely relying on software algorithms for spatial transformation and registration of images after acquisition. The accuracy of software registration is highly dependent on the repeatability of patient position, forming a significant technical shortcoming.
[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a positioning device for registration and fusion of multi-modal medical images, comprising a transportation plate and a support, the transportation plate and the support are detachably connected, and a positioning assembly is arranged on the transportation plate.
[0006] The positioning assembly comprises a plurality of guide rails arranged on the top of the transfer plate, two sliders are slidably connected in the guide rails in the middle of the transfer plate and the two guide rails on both sides of the transfer plate, a head support, a chest support, two symmetrical hand supports and two symmetrical foot supports are respectively arranged on the plurality of sliders, air bags are arranged on the inner sides of the head support, the chest support, the two symmetrical hand supports and the two symmetrical foot supports, a locking member is arranged in each slider, and the plurality of locking members are used for locking the plurality of sliders in the corresponding guide rails.
[0007] Further, the head support, the chest support, the two symmetrical hand supports and the two symmetrical foot supports are provided with inflation interfaces.
[0008] Further, the locking member comprises a rack fixedly connected in the guide rail, an insertion block is inserted on the slider, a slot is arranged at one end of the insertion block in the slider, a first elastic member is arranged on the insertion block, a push rod is slidably connected on the slider, and a plug rod is fixedly connected at the end of the push rod.
[0009] Further, the insertion block is inserted in the teeth of the rack, the plug rod is inserted in the slot, the rack, the insertion block and the slot are provided with two and are symmetrically arranged, and the two ends of the first elastic member are respectively connected with the two insertion blocks.
[0010] Further, the transfer plate is provided with a marking assembly, the marking assembly comprises a plurality of slot strips arranged on the transfer plate, and the plurality of slot strips correspond to the head support, the chest support, one side hand support and foot support, and the other side hand support and foot support.
[0011] Further, an insertion pipe is inserted in the slot of each slot strip, and the plurality of insertion pipes correspond to the head support, the chest support, the two symmetrical hand supports and the two symmetrical foot supports, a hole is arranged on the insertion pipe, a ball is arranged in the hole, a pressing rod is inserted in the insertion pipe, a conical block is fixedly connected at the bottom end of the pressing rod, a fixing ring is fixedly connected on the inner side of the insertion pipe, and a second elastic member is arranged between the pressing rod and the fixing ring.
[0012] Further, one end of the ball outside the insertion pipe abuts against the slot, one end of the ball inside the insertion pipe abuts against the conical block, the two ends of the second elastic member are respectively connected with the pressing rod and the fixing ring, and the hole and the ball are provided with two and are symmetrically arranged.
[0013] Further, the bottom of the transfer plate is provided with a connecting assembly, the connecting assembly comprises a sleeve rotatably connected at the bottom of the transfer plate, a tooth ring is fixedly connected on the sleeve, a rubber ring is rotatably connected at the bottom end of the sleeve, and a convex block is fixedly connected on the inner side of the sleeve.
[0014] Further, the adapter assembly further comprises a receiving pipe arranged in the sleeve pipe, a moving rod is slidably connected in the receiving pipe, a spiral groove is arranged on the moving rod, and an inner tooth ring is rotatably connected to the bottom of the transfer plate.
[0015] Further, the receiving pipe is fixedly connected to the bottom of the transfer plate, the end of the protruding block is arranged in the spiral groove, the sleeve pipe, the tooth ring, the rubber ring, the protruding block, the receiving pipe, the moving rod and the spiral groove are all arranged with multiple and are uniformly distributed in the circumference, and the multiple tooth rings are all engaged with the inner tooth ring.
[0016] Compared with the prior art, the positioning device for registration and fusion of multi-modal medical images provided by the application provides a fixed physical track for the adjustment of the support through the positioning assembly, avoids the randomness of manual positioning, rigidly fixes the position of the support through the rack and plug-in block type locking member, and has no displacement risk after adjustment, and the air bag on the inner side of the support forms a flexible physical constraint to limit the slight movement of the patient's body during the examination process, and the whole design ensures that the patient's body position is guaranteed by mechanical structure from positioning, fixing to the whole examination process during each scan, the body position difference is extremely small during two scans, the body position repeatability is greatly improved, the software algorithm can fully play the role of spatial transformation, the perfect image registration is easily realized, and solid support is provided for the high-precision requirement of multi-modal image fusion. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0018] Figure 1 The overall structure schematic diagram provided for the embodiments of the present application is provided.
[0019] Figure 2 The upper view structure schematic diagram provided for the embodiments of the present application is provided.
[0020] Figure 3 The partial structure schematic diagram provided for the embodiments of the present application is provided.
[0021] Figure 4 The structure schematic diagram of the locking member provided for the embodiments of the present application is provided.
[0022] Figure 5 The cross-sectional structure schematic diagram provided for the embodiments of the present application is provided.
[0023] Figure 6 The structure schematic diagram of the locking member provided for the embodiments of the present application is provided. Figure 5 The structure schematic diagram of the locking member provided for the embodiments of the present application is provided.
[0024] Figure 7The structural exploded schematic view of the marking assembly provided by the embodiment of the present application is shown in the figure;
[0025] Figure 8 The structural exploded schematic view of the marking assembly provided by the embodiment of the present application is shown in the figure; Figure 5 The structural schematic view amplified at B in the figure;
[0026] Figure 9 The structural exploded schematic view of the marking assembly provided by the embodiment of the present application is shown in the figure;
[0027] Figure 10 The structural schematic view of the lower view provided by the embodiment of the present application is shown in the figure.
[0028] Explanation of reference signs:
[0029] 1, transfer plate; 2, support; 3, positioning assembly; 31, guide rail; 32, sliding block; 33, head support; 34, chest support; 35, hand support; 36, foot support; 37, air bag; 38, locking member; 381, rack; 382, plug block; 383, notch; 384, first elastic member; 385, push rod; 386, plug rod; 4, marking assembly; 41, plug slot; 42, plug pipe; 43, hole; 44, ball; 45, pressing rod; 451, conical block; 46, fixing ring; 47, second elastic member; 5, connection assembly; 51, sleeve; 52, tooth ring; 53, rubber ring; 54, protruding block; 55, receiving pipe; 56, moving rod; 57, spiral groove; 58, inner tooth ring. DETAILED DESCRIPTION
[0030] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the accompanying drawings.
[0031] As shown in the accompanying Figure 1 to the accompanying Figure 10 drawings:
[0032] Example one:
[0033] The present application provides a positioning device for registration and fusion of multi-modal medical images, comprising a transfer plate 1 and a support 2, the transfer plate 1 and the support 2 are detachably connected, the transfer plate 1 is provided with a positioning assembly 3, the transfer plate 1 is used to install guide rails 31, the positioning assembly 3, a marking assembly 4 and a connection assembly 5, and at the same time directly bears the weight of a patient, the detachable design realizes the transfer of the patient between the support 2 and a treatment bed, is the installation carrier of each functional assembly and the core component of patient transfer, the support 2 provides stable support for the transfer plate 1, ensures that the transfer plate 1 remains horizontally stable during the body position adjustment and waiting process of the patient before transfer, and the detachable connection characteristics of the transfer plate 1 adapt to the transfer requirements, the positioning assembly 3 is used to accurately fix the head, chest, hand and foot positions of the patient, keeps the body posture of the patient stable, and provides a consistent body position basis for multi-modal image registration and fusion;
[0034] The positioning assembly 3 comprises a plurality of guide rails 31 opened at the top of the transfer plate 1, two sliding blocks 32 are slidingly connected in the guide rails 31 at the middle of the transfer plate 1 and in the two guide rails 31 at both sides of the transfer plate 1, a head support 33, a chest support 34, two symmetrical hand supports 35 and two symmetrical foot supports 36 are respectively arranged on the plurality of sliding blocks 32, air bags 37 are arranged in the inner sides of the head support 33, the chest support 34, the two symmetrical hand supports 35 and the two symmetrical foot supports 36, a locking member 38 is arranged in each sliding block 32, and the plurality of locking members 38 are used for locking the plurality of sliding blocks 32 in the corresponding guide rails 31, the guide rails 31 provide sliding guidance for the sliding blocks 32 and limit the movement trajectories of the sliding blocks 32, the middle guide rail 31 is adapted to the front and back adjustment of the head support 33 and the chest support 34, the two side guide rails 31 are adapted to the symmetrical adjustment of the hand supports 35 and the foot supports 36, the adjustment directions of the supports are ensured to be accurate, the sliding blocks 32 are intermediate parts for connecting the supports and the guide rails 31, the head support 33, the chest support 34, the hand supports 35 and the foot supports 36 are driven to move by sliding along the guide rails 31, flexible adjustment of the positions of the supports is realized, different patients with different body shapes are adapted, the head support 33 is attached to the head contour of the patient, the position of the head is fixed through position adjustment and cooperation with the air bags 37, head deviation affecting image registration accuracy is avoided, the chest support 34 is used for supporting and fixing the chest of the patient, limiting the left and right and front and back displacement of the chest, and ensuring the body position consistency of the image acquisition of the chest cavity, the hand supports 35 are symmetrically arranged on both sides of the upper limbs of the patient, the position of the upper limbs is fixed, and image interference caused by movement of the upper limbs is prevented, the foot supports 36 are used for fixing the lower limbs of the patient, keeping the lower limb posture uniform, avoiding the influence of lower limb displacement on the overall body posture during the transfer or examination process, and the air bags 37 are arranged in the inner sides of the supports, and flexible fixation is realized by being inflated and attached to the body contour of the patient, which not only improves the comfort of the patient, but also enhances the fixing stability and avoids discomfort or injury caused by rigid extrusion.
[0035] The head support 33, the chest support 34, the two symmetrical hand supports 35 and the two symmetrical foot supports 36 are all provided with inflation interfaces, which provide an inflation channel for the air bags 37, so that medical staff can adjust the inflation amount of the air bags 37 according to the body shape of the patient, and accurately adapt to the fixing needs of different patients.
[0036] The locking member 38 comprises a rack 381 fixedly connected in the guide rail 31, an insertion block 382 inserted in the sliding block 32, a notch 383 formed at one end of the insertion block 382 in the sliding block 32, a first elastic element 384 arranged on the insertion block 382, a push rod 385 slidingly connected to the sliding block 32, and an insertion rod 386 fixedly connected to the end of the push rod 385. The locking member 38 is used for locking the position of the sliding block 32 on the guide rail 31, ensuring that the fixture is fixed after being adjusted to the position and avoiding displacement. The rack 381 is fixed to the inner side of the guide rail 31 and provides a clamping point for the insertion block 382 through a tooth structure, which is a basic component for locking the sliding block 32. The insertion block 382 is positioned by being inserted with the teeth of the rack 381, and the two symmetrically arranged insertion blocks 382 synchronously act to improve the locking stability. The notch 383 is formed at the end of the insertion block 382 to provide a force point for the insertion rod 386. The insertion block 382 is retracted by being extruded by the insertion rod 386. The first elastic element 384 is a spring, which is used for connecting the two insertion blocks 382 and providing a pushing force to keep the insertion block 382 in the inserted state with the rack 381 in the normal state, being retracted when unlocked and being reset when locked. The push rod 385 is an operating end for medical staff, which is used for moving the insertion rod 386 by being manually pushed and is a triggering component for unlocking action. The insertion rod 386 is fixed to the end of the push rod 385 and is inserted into the notch 383 of the insertion block 382 to drive the insertion block 382 to be centered and retracted to release the locking.
[0037] The insertion block 382 is inserted into the teeth of the rack 381, and the insertion rod 386 is inserted into the notch 383. The rack 381, the insertion block 382, and the notch 383 are all provided with two symmetrically arranged structures. The two ends of the first elastic element 384 are respectively used for connecting the two insertion blocks 382.
[0038] Working principle: The patient lies on the transfer board 1, and the medical staff pushes the push rod 385 corresponding to each fixture to extrude the notch 383 of the insertion block 382 by driving the insertion rod 386 with the push rod 385, so that the two symmetric insertion blocks 382 are centered and retracted, the first elastic element 384 is retracted, and the insertion block 382 is disengaged from the rack 381.
[0039] The sliding block 32 is slid along the guide rail 31 to adjust the positions of the head support 33, the chest support 34, the hand support 35, and the foot support 36 to fit the patient's body contour and adapt to the patient's body shape.
[0040] After the position adjustment is completed, the push rod 385 is loosened, the first elastic element 384 is reset and pushes the two insertion blocks 382 to extend outward, and the insertion blocks 382 are reinserted into the teeth of the rack 381, so that the sliding block 32 is locked and the position of the fixture is fixed.
[0041] The gas bags 37 are inflated through the inflation interfaces on each fixture, and the gas bags 37 are flexibly attached to the patient's body after inflation to further fix the body posture and avoid local displacement.
[0042] After positioning, image examination can be performed, and the support and the air bag 37 jointly act to keep the patient stable during the examination process;
[0043] By setting the positioning assembly 3, the guide rail 31 and the sliding block 32 structure provide a fixed physical track for the support adjustment, avoiding the randomness of manual positioning. The rack 381 and the plug block 382 type locking member 38 can rigidly fix the position of the support, and there is no risk of displacement after adjustment. The air bag 37 on the inner side of the support forms a flexible physical constraint to limit the slight movement of the patient's body during the examination process. The whole design ensures that the patient's body position is guaranteed by mechanical structure from positioning, fixing to the whole examination process during each scan, the difference between two scans is very small, which greatly improves the body position repeatability, so that the software algorithm can fully play the role of spatial transformation, easily realize image perfect registration, and provide solid support for the high precision requirement of multi-modal image fusion.
[0044] Embodiment two:
[0045] Please refer to Figure 5 - Figure 7 As shown in the drawings, the present embodiment is basically the same as the previous embodiment, the difference is that the transfer plate 1 is provided with a marking assembly 4, the marking assembly 4 includes a plurality of slot strips 41 opened on the transfer plate 1, and the plurality of slot strips 41 correspond to the head support 33, the chest support 34, one side hand support 35 and foot support 36 and the other side hand support 35 and foot support 36 respectively. The marking assembly 4 is used to record the accurate position of each support, so as to quickly restore the body position when the patient is transferred between different examination equipment, improve the registration efficiency, and the slot strip 41 is opened on the transfer plate 1 to provide an insertion and fixing channel for the insertion tube 42. Each slot strip 41 corresponds to a group of supports to ensure that the marking position is accurately corresponding.
[0046] A plurality of insertion tubes 42 are respectively inserted into the head support 33, the chest support 34, the two symmetrical hand supports 35 and the two symmetrical foot supports 36, a hole 43 is formed in the insertion tube 42, a ball 44 is arranged in the hole 43, a pressing rod 45 is inserted into the insertion tube 42, a conical block 451 is fixedly connected to the bottom end of the pressing rod 45, a fixing ring 46 is fixedly connected to the inner side of the insertion tube 42, a second elastic element 47 is arranged between the pressing rod 45 and the fixing ring 46, the insertion tube 42 is inserted into the insertion slot 41, as the core component of the body position marker, the position of the insertion tube 42 corresponds to the position of the corresponding support one by one, the hole 43 is formed in the side wall of the insertion tube 42, providing a moving channel for the ball 44, and being a structural basis for the ball 44 to realize locking and unlocking, the ball 44 realizes the fixing or separation of the insertion tube 42 and the insertion slot 41 through the telescopic movement in the hole 43, and is a locking execution component of the marking assembly 4, the conical block 451 is driven to move through the downward pressing action of the pressing rod 45, triggering the unlocking of the marking assembly 4, the conical block 451 is fixed to the bottom of the pressing rod 45, the extrusion effect of the conical structure is utilized to drive the ball 44 to retract or extend, and the conical block 451 is a driving component of the movement of the ball 44, the fixing ring 46 is fixed to the inside of the insertion tube 42, providing a mounting fulcrum for the second elastic element 47, and simultaneously limiting the movement direction of the pressing rod 45, the second elastic element 47 is a spring, the second elastic element 47 is sleeved outside the pressing rod 45, and under the normal state, the pressing rod 45 is pushed to move upwards, so that the conical block 451 keeps extruding the ball 44, ensuring that the insertion tube 42 is fixed, and the pressing rod 45 is retracted when being pressed downwards, and is reset after unlocking.
[0047] One end of the ball 44 abuts against the insertion slot, the other end of the ball 44 abuts against the conical block 451, the two ends of the second elastic element 47 are connected with the pressing rod 45 and the fixing ring 46 respectively, and the hole 43 and the ball 44 are both provided with two and are symmetrically arranged.
[0048] Working principle: four insertion slot strips 41 corresponding to the head support 33, the chest support 34, one side hand support 35 and foot support 36, and the other side hand support 35 and foot support 36 are respectively inserted into the insertion tube 42.
[0049] When the insertion tube 42 is inserted, the second elastic element 47 is in an extended state, the pressing rod 45 is pushed to move upwards, the conical block 451 extrudes the two balls 44, the balls 44 extend outward along the hole 43 and abut against the inner wall of the insertion slot strip 41, the insertion tube 42 is fixed, the position of the insertion tube 42 corresponds to the position of the corresponding support accurately, and the body position marking is completed.
[0050] When the patient needs to be transferred or reexamined, the pressing rod 45 is pressed downwards, the second elastic element 47 is retracted, the conical block 451 moves downwards and cancels the extrusion on the ball 44, and the ball 44 is retracted into the insertion tube 42 along the hole 43 and is separated from the abutment against the inner wall of the insertion slot.
[0051] The insertion tube 42 is pulled out and temporarily stored, and after the patient lies down again, the holder is adjusted according to the marked position of the insertion tube 42, and then the insertion tube 42 is inserted into the corresponding slot, so that the body position is quickly restored, and the body position is consistent in multiple examinations;
[0052] By setting the marking assembly 4, the plurality of slot bars 41 correspond one by one to the head holder 33, the chest holder 34, the hand holder 35, and the foot holder 36. After the insertion tube 42 is inserted into the slot, the second elastic member 47 drives the conical block 451 to extrude the sphere 44, so that the sphere 44 abuts against the inner wall of the slot to realize rigid fixation. The initial positioning position of each holder can be accurately recorded. When the patient is transported or examined again, it is not necessary to rely on the memory or re-measurement of medical staff. The insertion tube 42 is only needed to be unlocked by pressing the pressing rod 45, and then the body position is quickly restored by re-inserting according to the marked position. The experience error of manual positioning is completely avoided. The design unifies the body position reference height in multiple scans, provides more stable initial conditions for software registration, is convenient to operate, adapts to the marking needs of patients with different body types, and effectively improves the efficiency and precision of multi-modal image fusion.
[0053] Embodiment three:
[0054] Please refer to Figure 8 - Figure 10 As shown in the drawings, the present embodiment is basically the same as the previous embodiment, and the difference lies in that the bottom of the transfer plate 1 is provided with a connection assembly 5. The connection assembly 5 includes a sleeve 51 rotatably connected to the bottom of the transfer plate 1. The sleeve 51 is fixedly connected with a gear ring 52. The bottom end of the sleeve 51 is rotatably connected with a rubber ring 53. The inner side of the sleeve 51 is fixedly connected with a protrusion 54. The connection assembly 5 is used to realize the accurate fixation of the transfer plate 1 and the treatment bed, so that the transfer plate 1 is not displaced after being transferred to the treatment bed, and the patient's body posture is stable. The sleeve 51 is inserted into the reserved insertion hole of the treatment bed to provide support and positioning for the transfer plate 1. The plurality of circumferentially distributed sleeves 51 improve the fixing stability. The gear ring 52 is fixed to the outer side of the sleeve 51 and is engaged with the internal gear ring 58 to transmit the rotary power of the internal gear ring 58 and drive the sleeve 51 to rotate. The rubber ring 53 is rotatably connected to the bottom of the sleeve 51 and is deformed by extrusion to fit the inner wall of the insertion hole, thereby enhancing the friction between the sleeve 51 and the treatment bed and improving the fixing reliability. The protrusion 54 is fixed to the inner side of the sleeve 51 and is inserted into the spiral groove 57 of the moving rod 56 to convert the rotary motion of the sleeve 51 into the linear motion of the moving rod 56.
[0055] The adapter assembly 5 further comprises a receiving pipe 55 arranged in the sleeve pipe 51, a moving rod 56 is slidingly connected in the receiving pipe 55, a helical groove 57 is arranged on the moving rod 56, an inner tooth ring 58 is rotationally connected at the bottom of the transfer plate 1, the receiving pipe 55 is fixed to the bottom of the transfer plate 1 to provide sliding guide for the moving rod 56 and limit the moving track of the moving rod 56, the moving rod 56 is slidingly connected in the receiving pipe 55 and is a driving component for deforming the rubber ring 53 by moving downward to extrude the rubber ring 53, the helical groove 57 is arranged on the moving rod 56 and converts the rotating force of the sleeve pipe 51 into the axial thrust of the moving rod 56 by cooperating with the protrusion 54, the inner tooth ring 58 is rotationally connected at the bottom of the transfer plate 1 and engages with the plurality of tooth rings 52 to realize the synchronous rotation of the plurality of sleeve pipes 51 and ensure the consistency of the fixing action.
[0056] The receiving pipe 55 is fixedly connected at the bottom of the transfer plate 1, the end of the protrusion 54 is arranged in the helical groove 57, the sleeve pipe 51, the tooth ring 52, the rubber ring 53, the protrusion 54, the receiving pipe 55, the moving rod 56 and the helical groove 57 are all arranged with a plurality of and are uniformly distributed in the circumference, and the plurality of tooth rings 52 all engage with the inner tooth ring 58.
[0057] Working principle: release the connection between the transfer plate 1 and the support 2, transfer the transfer plate 1 carrying the patient to the treatment bed beside the target examination device;
[0058] Align the plurality of sleeve pipes 51 at the bottom of the transfer plate 1 with the insertion holes reserved on the treatment bed, insert the sleeve pipes 51 into the insertion holes to preliminarily position the transfer plate 1;
[0059] Rotate the inner tooth ring 58 at the bottom of the transfer plate 1, the inner tooth ring 58 engages with the tooth ring 52 on each sleeve pipe 51 to drive all the sleeve pipes 51 to rotate synchronously;
[0060] When the sleeve pipe 51 rotates, the protrusion 54 on the inner side thereof slides along the helical groove 57 on the moving rod 56, the rotating force of the protrusion 54 is converted into the axial thrust on the inner wall of the helical groove 57 to push the moving rod 56 to move downward along the receiving pipe 55;
[0061] The moving rod 56 extrudes the rubber ring 53 at the bottom of the sleeve pipe 51 during the downward movement, the rubber ring 53 tightly fits the inner side wall of the insertion hole of the treatment bed after deforming to realize the rigid fixation of the sleeve pipe 51 and the treatment bed through the friction force, and the transfer plate 1 has no relative displacement with the treatment bed;
[0062] After the adapter fixation is completed, the image examination of the device can be performed;
[0063] When it is needed to be transferred to another device, the inner tooth ring 58 is reversely rotated to reversely rotate the sleeve 51, the convex block 54 is reset along the spiral groove 57, the moving rod 56 is moved upward, the rubber ring 53 is released from extrusion and returns to the original state, the sleeve 51 is pulled out, the transfer board 1 is transferred to the next treatment bed, and the above installation steps are repeated to quickly restore the body position through the marking assembly 4 and ensure that the body state is consistent in multi-device examination;
[0064] By setting the adapter assembly 5, through a plurality of circumferentially distributed sleeves 51 inserted into the reserved insertion hole of the treatment bed, rotating the inner tooth ring 58 can drive all tooth rings 52 and sleeves 51 to rotate synchronously, the convex block 54 on the inner side of the sleeve 51 slides along the spiral groove 57 of the moving rod 56, pushes the moving rod 56 to extrude the rubber ring 53 to tightly fit the inner wall of the insertion hole, realizes the rigid fixation of the transfer board 1 and the treatment bed, and there is no risk of relative displacement, cooperates with the body position recording function of the marking assembly 4, and when the patient is transferred from the support 2 to the treatment bed of different devices, the body position can be quickly restored through the marking, and the body state after transfer can be ensured through the adapter assembly 5, completely solves the body position deviation pain point of cross-device transfer, the design is suitable for the treatment beds of various image devices, is simple to operate and reliable in fixation, provides a key guarantee for the whole process accurate registration of multi-modal image examination.
[0065] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above figures and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.
Claims
1. A positioning device for registration and fusion of multi-modal medical images, comprising a transfer plate (1) and a support (2), characterized in that, The transport plate (1) and the support (2) are detachably connected, and the transport plate (1) is provided with a positioning assembly (3); The positioning assembly (3) comprises a plurality of guide rails (31) opened at the top of the transport plate (1), two sliding blocks (32) are slidably connected in the guide rails (31) at the middle of the transport plate (1) and in the two guide rails (31) at both sides of the transport plate (1), a head support (33), a chest support (34), two symmetrical hand supports (35) and two symmetrical foot supports (36) are respectively arranged on the plurality of sliding blocks (32), air bags (37) are arranged on the inner sides of the head support (33), the chest support (34), the two symmetrical hand supports (35) and the two symmetrical foot supports (36), and a locking member (38) is arranged in each sliding block (32), and the plurality of locking members (38) are used for locking the plurality of sliding blocks (32) in the corresponding guide rails (31).
2. The positioning device for registration and fusion of multi-modal medical images according to claim 1, wherein, The head support (33), the chest support (34), the two symmetrical hand supports (35) and the two symmetrical foot supports (36) are all provided with an inflation interface.
3. The positioning device for registration and fusion of multi-modal medical images as claimed in claim 1 wherein, The locking member (38) comprises a rack (381) fixedly connected in the guide rail (31), an insertion block (382) inserted on the sliding block (32), a slot (383) opened at one end of the insertion block (382) in the sliding block (32), a first elastic member (384) arranged on the insertion block (382), and a push rod (385) slidably connected on the sliding block (32), and a plug rod (386) fixedly connected at the end of the push rod (385).
4. The positioning device for registration and fusion of multi-modal medical images according to claim 3, wherein, The insertion block (382) is inserted in the teeth of the rack (381), the plug rod (386) is inserted in the slot (383), the rack (381), the insertion block (382) and the slot (383) are all provided with two and are symmetrically arranged, and the two ends of the first elastic member (384) are respectively connected with the two insertion blocks (382).
5. The positioning device for registration and fusion of multi-modal medical images as claimed in claim 1 wherein, The transport plate (1) is provided with a marking assembly (4), and the marking assembly (4) comprises a plurality of slot strips (41) opened on the transport plate (1), and the plurality of slot strips (41) correspond to the head support (33), the chest support (34), one side hand support (35) and foot support (36) and the other side hand support (35) and foot support (36) respectively.
6. The positioning device for registration and fusion of multi-modal medical images according to claim 5, characterized in that, An insertion pipe (42) is inserted in each slot of the slot strip (41), and the plurality of insertion pipes (42) correspond to the head support (33), the chest support (34), the two symmetrical hand supports (35) and the two symmetrical foot supports (36) respectively, a hole (43) is opened on the insertion pipe (42), a ball (44) is arranged in the hole (43), a pressing rod (45) is inserted in the insertion pipe (42), a tapered block (451) is fixedly connected at the bottom end of the pressing rod (45), a fixing ring (46) is fixedly connected on the inner side of the insertion pipe (42), and a second elastic member (47) is arranged between the pressing rod (45) and the fixing ring (46).
7. The positioning device for registration and fusion of multi-modal medical images according to claim 6, characterized in that, The ball (44) is in abutment with the insertion slot at the end outside the insertion tube (42), the ball (44) is in abutment with the tapered block (451) at the end inside the insertion tube (42), the two ends of the second elastic member (47) are connected with the pressing rod (45) and the fixed ring (46) respectively, the hole (43) and the ball (44) are both provided with two and are symmetrically arranged.
8. The positioning device for registration and fusion of multi-modal medical images as claimed in claim 1 wherein, The bottom of the transfer plate (1) is provided with a connecting assembly (5), the connecting assembly (5) comprises a sleeve (51) rotatably connected to the bottom of the transfer plate (1), the sleeve (51) is fixedly connected with a gear ring (52), the bottom end of the sleeve (51) is rotatably connected with a rubber ring (53), the inner side of the sleeve (51) is fixedly connected with a protruding block (54).
9. The positioning device for registration and fusion of multi-modal medical images according to claim 8, characterized in that, The connecting assembly (5) further comprises a receiving pipe (55) arranged in the sleeve (51), the receiving pipe (55) is slidably connected with a moving rod (56), the moving rod (56) is provided with a spiral groove (57), and the bottom of the transfer plate (1) is rotatably connected with an inner gear ring (58).
10. The positioning device for registration and fusion of multi-modal medical images according to claim 9, wherein, The receiving pipe (55) is fixedly connected to the bottom of the transfer plate (1), the end of the protruding block (54) is arranged in the spiral groove (57), the sleeve (51), the gear ring (52), the rubber ring (53), the protruding block (54), the receiving pipe (55), the moving rod (56) and the spiral groove (57) are all provided with a plurality of and are uniformly distributed in a circle, and the plurality of gear rings (52) are all engaged with the inner gear ring (58).