A neurosurgery virtual reality simulation surgery system
Through the neurosurgery virtual reality simulation surgical system, combined with the head-mounted virtual terminal and the motion sensing terminal, virtual reality surgical operation and fast charging storage are realized, solving the problem of low efficiency of the existing teaching mode and improving surgical efficiency and safety.
Patent Information
- Application Number
- CN201910663667.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-07-22
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2039-07-22
AI Technical Summary
The existing neurosurgery teaching model is inefficient and cannot effectively combine virtual reality technology for simulation, resulting in long learning cycles and low surgical efficiency.
A neurosurgery virtual reality simulation surgery system was designed, including a head-mounted virtual terminal, a motion sensing terminal, a server and an induction terminal placement rack. Virtual reality surgical operations are realized through a three-dimensional virtual neural anatomical map database and a motion sensing terminal, and through induction components It realizes fast charging and storage of the action sensing terminal with the charging device.
It improves users' proficiency and feel of surgical tools, enhances the safety and efficiency of the operation, simplifies the charging and storage process of the motion sensing terminal, and facilitates teaching and use.
Smart Images

Figure CN110459075B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of medical simulation, and in particular to a neurosurgery virtual reality simulation operation system. Background Art
[0002] In the current teaching of neurosurgery, students still observe the actual operation and cannot actually operate it. The teaching mode that cannot be combined with operation for learning is inefficient and has a long learning cycle. With the development of science and technology, virtual reality technology is becoming more and more mature, and its imaging realism is getting higher and higher. With the help of sensing equipment, it can realize various scenario simulations. Combined with neurosurgery learning, it can allow students to learn by combining virtual and real, and also can perform simulation before the operation to improve the efficiency and accuracy of the actual operation. Summary of the invention
[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a neurosurgery virtual reality simulation surgery system that allows students to learn by combining virtual and real aspects, and can also perform simulations before surgery to improve the efficiency and accuracy of the actual surgery.
[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a neurosurgery virtual reality simulation surgery system, comprising a head-mounted virtual terminal, a motion sensing terminal, a server, and a sensing terminal placement rack for placing the motion sensing terminal; the server stores a three-dimensional virtual neuroanatomy database; the head-mounted virtual terminal is communicatively connected to the server to obtain the three-dimensional virtual neuroanatomy database, and the motion sensing terminal is communicatively connected to the head-mounted virtual terminal to obtain user motion data and send it to the head-mounted virtual terminal for motion matching; the motion sensing terminal is an unsharpened neurosurgery tool with posture sensing and communicatively connected to the head-mounted virtual terminal; the sensing terminal placement rack comprises a charging device and a storage device, the charging device is arranged in the storage device, and a sensing component for sensing the motion sensing terminal is also arranged in the storage device, the sensing component is electrically connected to the charging device to send a sensing signal to the charging device, when the motion sensing terminal is placed in the storage device, the sensing component senses the motion sensing terminal, and the charging device charges the motion sensing terminal.
[0005] As a further improvement of the present invention, the head-mounted virtual terminal cooperates with the three-dimensional virtual neuroanatomy database in the server to perform VR display, and performs VR surgical operations through the motion sensing terminal.
[0006] As a further improvement of the present invention, the storage device includes a box body, a support frame and a roller arranged on the box body; the box body includes a base and a cover body flip-connected to the base; there are two rollers, which are symmetrically arranged at the two sides of the bottom of the base for the user to drag the box body; the charging device is arranged on the inner side surface of the cover body, the charging device includes a mounting seat and a storage bag mounted on the mounting seat, and the charging device and the sensing component are arranged at the position of the mounting seat corresponding to the storage bag; a support component for supporting the cover body is arranged between the base and the cover body; the support component includes a moving block fixed to the cover body and a support sheet flip-connected to the base, a fixing hole is arranged on the moving block, one end of the support sheet is flip-connected to the base, and the other end is fixedly connected to a fixing block for embedding in the fixing hole; the moving block can be moved back and forth relative to the extension direction of the fixed block and is arranged on the inner side surface of the cover body, and when the fixed block is embedded in the fixing hole, the cover body and the base are relatively supported and fixed.
[0007] As a further improvement of the present invention, a sliding groove is provided on the cover body, and the movable block is slidably connected in the sliding groove. The movable block is located on the side of the sliding groove relative to the fixed block. A return spring is also provided in the sliding groove, and one end of the return spring is fixedly connected to the side wall of the sliding groove, and the other end contacts the side of the movable block.
[0008] As a further improvement of the present invention, the support frame includes two support arms that are flipped and connected to the bottom of the base, and buckles are provided at positions on the base corresponding to the support arms. When the support arms are flipped and folded, the two support arms are embedded in the buckles. A connecting rod is also provided on the support arm, and overlapping holes are provided on both side walls of the buckle. One end of the connecting rod is rotatably connected to the support arm, and the other end is bent to form a hook shape, and the hook-shaped portion cooperates with the overlapping hole. The overlapping hole is for the hook-shaped portion to pass through. When the hook-shaped portion of the connecting rod passes through the overlapping hole, the support arm and the base are relatively fixed to support the base.
[0009] As a further improvement of the present invention, the two side walls of the buckle are turned outward, and the openings of the buckle are close to each other to form a buckle shape.
[0010] As a further improvement of the present invention, a pull rod is slidably connected to the bottom of the base, and the side of the pull rod for the user to pull is bent relative to the position of the cover plate.
[0011] As a further improvement of the present invention, a flippable flap is also provided on the base, one side of which can be flipped toward the pull rod and connected to the base. When the pull rod is in a stretched state, the side of the pull rod for the user to pull by hand presses against the flipp.
[0012] As a further improvement of the present invention, a pull-out cabinet is also arranged on the base, and a notch is provided on the bottom of the base on the side opposite to the extending direction of the pull-out cabinet, the notch corresponds to the position of the pull-out cabinet, and a through groove for users to grasp is provided at the position of the pull-out cabinet opposite to the notch.
[0013] As a further improvement of the present invention, a partition is provided at a position corresponding to the notch in the pull-out cabinet. The partition is provided along the outer edge of the through slot and is fixed to a cabinet wall on one side of the pull-out cabinet opposite to the notch to form a structure surrounding the through slot.
[0014] The beneficial effect of the present invention is that the user can perform virtual reality operation, wherein the surgical tools used in the motion sensing terminal can improve the simulation degree of the user's operation and the hand feel, and can allow doctors to improve their proficiency in the operation of surgical tools in preoperative simulation or students in the learning process. In the virtual reality operation, the neurosurgery tools held by the user are not sharpened, which can improve safety and will not affect the hand feel. The sensing components are used to sense each motion sensing terminal. At this time, the user only needs to put the motion sensing terminal into the storage device. After the sensing component senses, the charging device can charge the motion sensing terminal. Through this solution, the motion sensing terminal is directly placed in the storage device after use. After the sensing component senses, the charging device will charge the motion sensing terminal, which is convenient for the user to store. There is no need to charge the motion sensing terminals one by one. After the user uses it, it can be quickly stored, which is convenient for teaching use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;
[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention in a storage state when viewed from above;
[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention in an unfolded state when viewed from above;
[0018] Figure 4 A bottom view of the present invention in a stored state;
[0019] Figure 5 It is a partial structural schematic diagram of the moving block of the present invention.
[0020] Figure numbers: 1. Head-mounted virtual terminal; 2. Induction terminal placement rack; 3. Charging device; 4. Storage device; 5. Induction component; 6. Box; 7. Roller; 8. Base; 9. Cover; 10. Support component; 11. Moving block; 12. Support plate; 13. Fixing hole; 14. Fixing block; 15. Slide; 16. Reset spring; 17. Support frame; 18. Support arm; 19. Buckle; 20. Connecting rod; 21. Overlap hole; 22. Pull rod; 23. Flip plate; 24. Pull-out cabinet; 25. Notch; 26. Through groove; 27. Partition. DETAILED DESCRIPTION
[0021] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.
[0022] Reference Figure 1-5 As shown, a neurosurgery virtual reality simulation surgery system of the present embodiment includes a head-mounted virtual terminal 1, a motion sensing terminal, a server, and a sensing terminal placement rack 2 for placing the motion sensing terminal; the server stores a three-dimensional virtual neuroanatomy database; the head-mounted virtual terminal 1 is connected to the server for communication to obtain the three-dimensional virtual neuroanatomy database, and the motion sensing terminal is connected to the head-mounted virtual terminal 1 for communication to obtain user motion data and send it to the head-mounted virtual terminal 1 for motion matching; the motion sensing terminal is an unsharpened neurosurgery tool with posture sensing and connected to the head-mounted virtual terminal 1 for communication; the sensing terminal placement rack 2 includes a charging device 3 and a storage device 4, the charging device 3 is arranged in the storage device 4, and a sensing component 5 for sensing the motion sensing terminal is also arranged in the storage device 4, the sensing component 5 is electrically connected to the charging device 3 to send a sensing signal to the charging device 3, when the motion sensing terminal is placed in the storage device 4, the sensing component 5 senses the motion sensing terminal, and the charging device 3 charges the motion sensing terminal.
[0023] The head-mounted virtual terminal 1 cooperates with the three-dimensional virtual neuroanatomy database in the server for VR display, and performs VR surgery through the motion sensing terminal.
[0024] When doctors or students are simulating, they can put the head-mounted virtual terminal 1 on their heads, and combine VR technology to obtain three-dimensional virtual neuroanatomy images from the server through the head-mounted virtual terminal 1 for virtual reality display. With the motion sensing terminal, users can perform virtual reality operations. The surgical tools used by the motion sensing terminal can improve the simulation degree of user operations and improve the hand feel, allowing doctors to improve their proficiency in operating surgical tools during preoperative simulation or students to improve their proficiency in operating surgical tools during the learning process. In virtual reality operations, the neurosurgery tools held by users are not sharpened, which can improve safety and not affect the hand feel. Specifically, the posture of the motion sensing terminal can be obtained in real time by setting a nine-axis acceleration sensor. Since there are many tools and types used in an operation, in order to achieve a more realistic simulation, the number of motion sensing terminals used will also be large. If the user needs to charge each motion sensing terminal one by one after a simulation, it is very cumbersome for the user to operate. In this solution, each motion sensing terminal is sensed by the sensing component 5. At this time, the user only needs to put the motion sensing terminal into the storage device 4. After the sensing component 5 senses, the charging device 4 will charge the terminal. The motion sensing terminal can be charged by setting 3. In the specific setting, the charging device 3 can adopt a wireless charging method. The existing wireless charging technology is very mature. This solution does not involve the improvement of wireless charging, so it will not be described in detail. The sensing component 5 can be provided with a metal sensing sensor, such as an LDC1314 detection chip, which can detect metal and respond. Through this solution, the motion sensing terminal can be directly placed in the storage device 4 after use. After the sensing component 5 senses, the charging device 3 will charge the motion sensing terminal, which is convenient for users to store. There is no need to charge the motion sensing terminals one by one. After the user finishes using it, it can be quickly stored, which is convenient for teaching use.
[0025] As an improved specific embodiment, the storage device 4 includes a box body 6 and a support frame 17 and a roller 7 arranged on the box body 6; the box body 6 includes a base 8 and a cover body 9 flipped and connected to the base 8; there are two rollers 7, which are symmetrically arranged at the two sides of the bottom of the base 8 for the user to drag the box body 6; the charging device 3 is arranged on the inner side of the cover body 9, the charging device 3 includes a mounting seat and a storage bag installed on the mounting seat, and the charging device 3 and the induction component 5 are arranged at the position of the mounting seat corresponding to the storage bag; there is a A support assembly 10 is provided for supporting the cover body 9; the support assembly 10 includes a moving block 11 fixed on the cover body 9 and a support sheet 12 flipped and connected to the base 8, a fixing hole 13 is provided on the moving block 11, one end of the support sheet 12 is flipped and connected to the base 8, and the other end is fixedly connected to a fixing block 14 for embedding into the fixing hole 13; the moving block 11 is arranged on the inner side surface of the cover body 9 and can move back and forth relative to the extension direction of the fixing block 14. When the fixing block 14 is embedded in the fixing hole 13, the cover body 9 and the base 8 are relatively supported and fixed.
[0026] When the user carries the simulated surgery system of the present invention, the motion sensing terminal can be stored in the storage bag, and the head-mounted virtual terminal 1 can be stored in the base 8. After the cover 9 is covered, the cover 9 and the base 8 form a closed space; when the user needs to carry it, it can be pushed by the roller 7, and the support frame 17 can be used to support the base 8, and the base 8 is supported at a higher position, which is convenient for user operation. The charging device 3 and the sensing component 5 are arranged on the mounting seat at the position corresponding to the storage bag, which is convenient for sensing and charging, and the setting of the mounting seat is convenient for integrated production, which can make assembly more convenient, and only needs to install the mounting seat on the cover 9. When the user opens the cover 9, the moving block 11 can be moved, and then the support sheet 12 can be turned over to align the position of the fixed block 14 with the fixed hole 13 on the moving block 11. At this time, the moving block 11 is pushed back to its original position, and the fixed block 14 is embedded in the fixed hole 13, thereby supporting the cover 9, which is convenient for building a platform for simulated surgery and convenient for taking and storing items.
[0027] Based on the further improvement of the above scheme, a slide groove 15 is opened on the cover body 9, and the movable block 11 is slidably connected in the slide groove 15. The movable block 11 is located on the side of the slide groove 15 relative to the fixed block 14. A return spring 16 is also arranged in the slide groove 15. One end of the return spring 16 is fixedly connected to the side wall of the slide groove 15, and the other end contacts the side surface of the movable block 11.
[0028] With this improvement, when the user opens the cover body 9 and aligns the position of the fixed block 14 with the fixed hole 13, the user releases the movable block 11. Under the action of the return spring 16, the movable block 11 automatically moves toward the fixed block 14, and the fixed block 14 is embedded in the fixed hole 13, so that the user can more conveniently fix and support the cover body 9.
[0029] As a preferred embodiment, the support frame 17 includes two support arms 18 that are flipped and connected to the bottom of the base 8. A buckle 19 is also provided at a position on the base 8 corresponding to the support arm 18. When the support arm 18 is flipped and folded, the two support arms 18 are embedded in the buckle 19; a connecting rod 20 is also provided on the support arm 18. The two side walls of the buckle 19 are provided with overlapping holes 21. One end of the connecting rod 20 is rotatably connected to the support arm 18, and the other end is bent to form a hook shape. The hook-shaped portion cooperates with the overlapping hole 21, and the overlapping hole 21 is for the hook-shaped portion to penetrate. When the hook-shaped portion of the connecting rod 20 penetrates the overlapping hole 21, the support arm 18 and the base 8 are relatively fixed to support the base 8.
[0030] When the user folds the support arm 18, Figure 2 and 4 As shown in , the support arms 18 on the left and right sides are flipped and attached to the bottom of the base 8, and both support arms 18 are buckled in the buckle 19. The buckle 19 can prevent the support arms 18 from coming out again under the action of gravity when the support arms 18 are stored. In addition, through the overlapping holes 21 on the two side walls of the buckle 19, when the support arms 18 are needed to support the base 8, the support arms 18 are first flipped open, and then the connecting rod 20 is flipped. By inserting the hook-shaped part of the connecting rod 20 into the overlapping holes 21, the support arms 18 can be fixed relative to the base 8. At this time, both support arms 18 can be fixed, thereby achieving the supporting effect. This overlapping method is convenient and fast, and is easy to retract. When retrieving, the support arm 18 presses the connecting rod 20 between the base 8 and the support arm 18, and the support arm 18 is buckled by the buckle 19. At this time, the connecting rod 20 and the support arm 18 can be fixed at one time. The buckle 19 can not only fasten the support arm 18 , but also cooperate with the connecting rod 20 to fix the support arm 18 .
[0031] As an improved specific implementation, the two side walls of the buckle 19 are turned outward, and the openings of the buckle 19 are close to each other to form a buckle shape.
[0032] The outward-turned part of the buckle 19 allows the support arm 18 to be more easily embedded in the buckle 19, and the buckle shape formed by the openings of the buckle 19 being close to each other can better fasten the support arm 18. Combined with the outward-turned side wall, a bend with a certain curvature can also be formed. By fastening the support arm 18 at the bend, the support arm 18 can be prevented from being scratched by sharp angles.
[0033] More specifically, a pull rod 22 is slidably connected to the bottom of the base 8, and the side of the pull rod 22 for the user to pull is bent relative to the position of the cover plate.
[0034] The pull rod 22 is provided to make it easier for the user to drag the base 8, and one side for the user to pull is bent, such as Figure 2As shown in , the bend is convenient for the user to be in the center position when pulling by hand, such as Figure 2 After the middle base 8 and the cover body 9 are buckled together, the bending position is located at the center of the whole formed by the base 8 and the cover body 9, which is convenient for the user to grab and pull out the pull rod 22, and is also convenient for protecting the base 8 and has a certain pressure resistance effect.
[0035] In another matching implementation mode, a flip plate 23 is further provided on the base 8, and one side of the flip plate 23 is connected to the base 8 and can be flipped toward the pull rod 22. When the pull rod 22 is in a stretched state, the side of the pull rod 22 for the user to pull by hand presses against the flip plate 23.
[0036] Through this solution, in conjunction with the bent portion of the pull rod 22, a storage platform can be built after the flap 23 is released, and the bent portion of the pull rod 22 can support the flap 23, so that the flap 23 has a higher supporting strength.
[0037] As an improved specific embodiment, a pull-out cabinet 24 is further provided on the base 8, and a notch 25 is provided on the bottom of the base 8 on the side opposite to the extending direction of the pull-out cabinet 24, the notch 25 corresponds to the position of the pull-out cabinet 24, and the pull-out cabinet 24 has a through groove 26 for the user to grasp at the position opposite to the notch 25.
[0038] Through the above technical solution, such as Figure 2 , 3 As shown in FIG. 4 , the notch 25 cooperates with the through groove 26 to facilitate the user to draw the drawer 24 , avoiding the need to provide pull rings or other components that are not conducive to storage on the drawer 24 . When the drawer 24 is retracted into the base 8 , it can be stored better without other obstructive components.
[0039] A partition 27 is provided at a position corresponding to the notch 25 in the drawer cabinet 24 . The partition 27 is provided along the outer edge of the through slot 26 and is fixed to a cabinet wall on one side of the drawer cabinet 24 opposite to the notch 25 to form a structure surrounding the through slot 26 .
[0040] The partition 27 can prevent the components in the drawer 24 from falling out, and can protect the user's hands from being scratched by the objects in the drawer 24 when the user reaches out to grab the through slot 26 .
[0041] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A neurosurgery virtual reality simulation surgery system, comprising a head-mounted virtual terminal (1), a motion sensing terminal, a server, and a sensing terminal placement rack (2) for placing the motion sensing terminal; the server stores a three-dimensional virtual neuroanatomy database; the head-mounted virtual terminal (1) is connected to the server for communication to obtain the three-dimensional virtual neuroanatomy database, and the motion sensing terminal is connected to the head-mounted virtual terminal (1) for communication to obtain user motion data and send it to the head-mounted virtual terminal (1) for motion matching, characterized in that: The motion sensing terminal is a non-edged neurosurgery tool with posture sensing and communicatively connected to a head-mounted virtual terminal (1); the sensing terminal placement rack (2) comprises a charging device (3) and a storage device (4); the charging device (3) is arranged in the storage device (4); the storage device (4) is also provided with a sensing component (5) for sensing the motion sensing terminal; the sensing component (5) is electrically connected to the charging device (3) to send a sensing signal to the charging device (3); when the motion sensing terminal is placed in the storage device (4), the sensing component (5) senses the motion sensing terminal, and the charging device (3) charges the motion sensing terminal; The storage device (4) comprises a box body (6), a support frame (17) and a roller (7) arranged on the box body (6); the box body (6) comprises a base (8) and a cover body (9) flipped and connected to the base (8); there are two rollers (7), which are symmetrically arranged at two sides of the bottom of the base (8) so that the user can drag the box body (6); the charging device (3) is arranged on the inner side of the cover body (9), the charging device (3) comprises a mounting seat and a storage bag mounted on the mounting seat, and the charging device (3) and the induction component (5) are arranged at a position of the mounting seat corresponding to the storage bag; a support frame (17) and a roller (7) are arranged between the base (8) and the cover body (9) for supporting the storage bag. A support assembly (10) for supporting a cover body (9); the support assembly (10) comprises a moving block (11) fixed on the cover body (9) and a support sheet (12) flipped and connected to a base (8); a fixing hole (13) is provided on the moving block (11); one end of the support sheet (12) is flipped and connected to the base (8); the other end is fixedly connected to a fixing block (14) for embedding into the fixing hole (13); the moving block (11) is arranged on the inner side surface of the cover body (9) so as to be movable back and forth relative to the extension direction of the fixing block (14); when the fixing block (14) is embedded in the fixing hole (13), the cover body (9) and the base (8) are supported and fixed relative to each other; The cover body (9) is provided with a slide groove (15), the movable block (11) is slidably connected in the slide groove (15), the movable block (11) is located on a side of the slide groove (15) opposite to the fixed block (14), and a return spring (16) is also provided in the slide groove (15), one end of the return spring (16) is fixedly connected to the side wall of the slide groove (15), and the other end contacts the side surface of the movable block (11); The support frame (17) comprises two support arms (18) which are flipped and connected to the bottom of the base (8); a buckle (19) is also provided at a position on the base (8) corresponding to the support arm (18); when the support arm (18) is flipped and folded, the two support arms (18) are embedded in the buckle (19); a connecting rod (20) is also provided on the support arm (18); two side walls of the buckle (19) are provided with overlapping holes (21); one end of the connecting rod (20) is rotatably connected to the support arm (18), and the other end is bent to form a hook shape, the hook-shaped part cooperates with the overlapping hole (21), and the overlapping hole (21) is for the hook-shaped part to penetrate; when the hook-shaped part of the connecting rod (20) penetrates the overlapping hole (21), the support arm (18) and the base (8) are relatively fixed to support the base (8); The head-mounted virtual terminal (1) cooperates with the three-dimensional virtual neuroanatomy database in the server to perform VR display, and performs VR surgical operations through the motion sensing terminal.
2. The neurosurgery virtual reality simulation surgery system according to claim 1, characterized in that: The two side walls of the buckle (19) are turned outward, and the openings of the buckle (19) are close to each other to form a buckle shape.
3. The neurosurgery virtual reality simulation surgery system according to claim 2, characterized in that: The bottom of the base (8) is also slidably connected to a pull rod (22), and the side of the pull rod (22) for the user to pull is bent relative to the position of the cover plate.
4. The neurosurgery virtual reality simulation surgery system according to claim 3, characterized in that: The base (8) is also provided with a flip plate (23), one side of which can be flipped toward the pull rod (22) and connected to the base (8); when the pull rod (22) is in a stretched state, the side of the pull rod (22) for the user to pull by hand presses against the flip plate (23).
5. The neurosurgery virtual reality simulation surgery system according to claim 4, characterized in that: A drawer cabinet (24) is also provided on the base (8), and a notch (25) is provided on the bottom of the base (8) on the side opposite to the extending direction of the drawer cabinet (24), the notch (25) corresponds to the position of the drawer cabinet (24), and a through groove (26) for a user to grasp is provided on the drawer cabinet (24) at a position opposite to the notch (25).
6. The neurosurgery virtual reality simulation surgery system according to claim 5, characterized in that: A partition (27) is provided at a position corresponding to the notch (25) in the drawer cabinet (24); the partition (27) is provided along the outer edge of the through groove (26) and is fixed to a cabinet wall on one side of the drawer cabinet (24) opposite to the notch (25) to form a structure surrounding the through groove (26).
Citation Information
Patent Citations
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CN104999851A
Remote interaction system and method based on virtual reality head-mounted display device
CN107714006A
Virtual surgery training system for neurosurgery department
CN109637252A
Virtual surgery operation device
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CN204316131U