Tibial platform visualization device and surgical navigation positioning system

Abstract

The utility model provides a tibial platform visualization device and operation navigation positioning system, tibial platform visualization device includes: registration tracking part, is used for on tibial platform sliding or point selects the characteristic point of different position on tibial platform, registration tracking part has first tracker, visualization tracking part, is used for installing on tibial platform clamping part, visualization tracking part has second tracker, control part, control part obtains the position information of registration tracking part when different position on tibial platform through first tracker, and obtains the position information of visualization tracking part through second tracker. The tibial platform visualization device can effectively solve the technical problem that tibial platform prosthesis is difficult to realize accurate positioning in the total knee arthroplasty process under the assistance of the orthopedic operation navigation positioning system in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, specifically to a tibial platform visualization device and a surgical navigation and positioning system. Background Technology

[0002] With the continuous advancement of medical technology, orthopedic surgical navigation and positioning systems are being used more and more widely in orthopedic surgeries. This system can accurately correlate a patient's preoperative imaging data with the intraoperative lesion site, assisting the surgeon in completing surgical planning and guiding the operation of surgical instruments in real time, thereby significantly improving the accuracy, efficiency, and safety of the surgery.

[0003] In existing technologies, orthopedic surgical navigation and positioning systems are widely used in total knee arthroplasty. During the surgery, the system software first plans the prosthesis implantation preoperatively based on the patient's imaging data, placing the prosthesis in the ideal target position. Subsequently, precise osteotomy is performed under the guidance of the navigation system. After the osteotomy is completed, the prosthesis is implanted, and the implantation effect is evaluated by collecting parameters such as the gap force line and condylar contact point.

[0004] During prosthesis placement, femoral prostheses typically have five contact surfaces, allowing for precise spatial positioning through multi-point contact. However, tibial plateau prostheses have only one contact surface that mates with the proximal tibial bone, resulting in rotational freedom within their cross-section and preventing accurate orientational positioning through structural self-limitation. Therefore, the final placement angle of the tibial plateau prosthesis relies primarily on the surgeon's clinical experience, lacking objective and precise positioning criteria.

[0005] However, the placement of the tibial plateau affects the medial and lateral joint space during flexion and extension, as well as the contact point of the femoral prosthesis on the tibial plateau. Currently, the evaluation results displayed on orthopedic surgical navigation and positioning system software are calculated based on the ideal placement position set in the preoperative planning. However, in actual operation, because the rotational freedom of the tibial plateau in its cross-section is unrestricted, it is difficult for surgeons to place it in the accurate position. This leads to a certain degree of error between the data displayed in the orthopedic surgical navigation and positioning system and the actual situation, thus affecting the accuracy and guiding significance of surgical evaluation.

[0006] Therefore, existing technologies still need further development. Utility Model Content

[0007] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a tibial plateau visualization device and surgical navigation and positioning system to solve the technical problem that the tibial plateau prosthesis is difficult to accurately position during total knee replacement surgery assisted by orthopedic surgical navigation and positioning systems in the prior art.

[0008] To achieve the above-mentioned technical objectives, according to one aspect of the present invention: a tibial platform visualization device is provided, comprising: a registration tracking component for sliding or selecting feature points at different positions on the tibial platform; the registration tracking component having a first tracker; a visualization tracking component for mounting on a tibial platform clamping component; the visualization tracking component having a second tracker; and a control component for acquiring position information of the registration tracking component at different positions on the tibial platform via the first tracker and acquiring position information of the visualization tracking component via the second tracker; wherein, when the registration tracking component moves on the tibial platform, the control component acquires relative position information of the registration tracking component with respect to the visualization tracking component at different positions on the tibial platform via the first tracker and the second tracker.

[0009] Furthermore, the visualization tracking component also includes: a clamping assembly for clamping or releasing the tibial plateau clamping component; the clamping assembly is connected to a second tracker, and the second tracker is movably disposed relative to the clamping assembly; the second tracker is located above the clamping assembly and is mounted on the tibial plateau clamping component via the clamping assembly.

[0010] Furthermore, the clamping assembly includes: a first clamping member and a second clamping member, the first clamping member and the second clamping member being disposed opposite to each other and rotatably connected; a clamping space being formed between the first clamping member and the second clamping member; and a locking member for connecting with the first clamping member and the second clamping member to clamp the tibial plateau clamping component by means of the locking member.

[0011] Furthermore, the visual tracking component also includes: a universal bracket connected to the clamping assembly and positioned above the clamping assembly, with a movable space on the universal bracket; and a cue stick having a ball and a shaft, the ball being located at one end of the shaft and rotatably disposed within the movable space, the cue stick being positioned above the universal bracket, and the end of the shaft away from the ball being connected to the second tracker.

[0012] Furthermore, the universal bracket includes: a sleeve and a universal bracket body, at least a portion of the universal bracket body is inserted into the sleeve, the sleeve is fixedly connected to the universal bracket body, and the sleeve is located above the universal bracket body; the top of the universal bracket body is provided with a receiving groove for accommodating the ball portion, and the inner wall of the sleeve and the inner wall of the receiving groove form an active space.

[0013] Furthermore, the visual tracking component also includes a locking assembly, which has a support portion and a locking portion. The support portion is disposed on the outer wall of the universal bracket body and abuts against the universal bracket body. The locking portion is movably disposed on the outer wall of the universal bracket body in a preset direction and is disposed opposite to the support portion. When the locking portion moves toward the universal bracket body in the preset direction, the ball portion of the stick is locked in the universal bracket body by the locking portion and the support portion.

[0014] Furthermore, the locking assembly includes: a top pin, the fixed end of which passes through the sleeve and abuts against the universal bracket body; the top pin is threadedly connected to the sleeve; and a locking member, which is movably mounted on the sleeve in a preset direction so that the force-applying end of the locking member approaches or moves away from the universal bracket body; wherein, when it is necessary to lock the ball part of the cue stick into the universal bracket body, the locking member moves toward the universal bracket body, and the ball part of the cue stick is locked into the universal bracket body by the locking member and the top pin.

[0015] Furthermore, the visual tracking component also includes a connecting rod, which is disposed between the universal bracket and the clamping assembly, with its two ends connected to the universal bracket and the clamping assembly, respectively.

[0016] Furthermore, the second tracker includes: a first mounting base and at least one first reflective ball, the first reflective ball being disposed on the first mounting base; and / or, the control component includes: an optical camera, the optical camera being used to acquire position information of the registered tracking component at different positions on the tibial plateau via the first tracker, and to acquire position information of the visualized tracking component via the second tracker.

[0017] According to another aspect of the present invention, a surgical navigation and positioning system is provided, comprising: the above-mentioned tibial platform visualization device.

[0018] Beneficial effects: Applying the technical solution of this utility model, the tibial platform visualization device provided by this utility model includes a registration tracking component, a visualization tracking component, and a control component. The registration tracking component can slide or select feature points at different positions on the tibial platform. The control component obtains the corresponding position information of the registration tracking component at various positions on the tibial platform through a first tracker, thereby obtaining detailed position data of different positions on the tibial platform. The visualization tracking component is fixedly installed on the tibial platform clamping component. After installation, the visualization tracking component is fixed relative to the tibial platform clamping component. The visualization tracking component has a second tracker, and the control component can obtain the position information of the visualization tracking component through the second tracker. By obtaining the position information of the visualization tracking component and the position information of the registration tracking component at different positions on the tibial platform, the control component obtains the relative position information of the registration tracking component relative to the visualization tracking component at different positions on the tibial platform, thereby obtaining the relative position information of the tibial platform relative to the visualization tracking component.

[0019] Therefore, by sliding or selecting feature points at different locations on the tibial platform, the registered tracking component increases the number of data points collected. Compared to positioning methods that rely on only a few feature points or single location information, this method can more comprehensively reflect the spatial geometric features of the tibial platform and effectively reduce positioning errors caused by insufficient data. The control component, through the first and second trackers, acquires the relative position information of the registered tracking component relative to the visualized tracking component at different positions on the tibial platform. This method of calculating relative position, combined with the position data of different tracking components, can more accurately determine the specific position and orientation of the tibial platform in three-dimensional space, successfully avoiding positioning errors caused by the accumulation of errors from a single reference point, significantly improving the accuracy of tibial platform prosthesis positioning, and enabling the visualization of the tibial platform in the system. Furthermore, the device demonstrates good adaptability to the anatomical differences of the tibial platform among different patients. By flexibly collecting feature points and calculating relative positional relationships, it can provide strong support for doctors to tailor surgical plans, optimize surgical outcomes, and improve patient postoperative recovery. This tibial platform visualization device can effectively solve the technical problem of the difficulty in accurately positioning the tibial platform prosthesis during total knee replacement surgery assisted by orthopedic surgical navigation and positioning systems in existing technologies. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 A schematic diagram of the structure of the tibial platform visualization device provided according to the present invention is shown; Figure 2A first-view schematic diagram of the visualization tracking component in the tibial platform visualization device provided according to the present invention is shown. Figure 3 A second-view schematic diagram of the visualization tracking component in the tibial platform visualization device provided according to the present invention is shown. Figure 4 A schematic diagram of the registration and tracking component in the tibial platform visualization device provided according to the present invention is shown; Figure 5 A schematic diagram of the surgical navigation and positioning system provided according to the present invention is shown.

[0021] The above figures include the following reference numerals: 1. Registration tracking component; 11. First tracker; 111. Second mounting base; 112. Second reflective ball; 12. Probe; 13. Linkage rod; 2. Visual tracking component; 21. Second tracker; 211. First mounting base; 212. First reflective ball; 22. Clamping assembly; 221. First clamping member; 222. Second clamping member; 223. Locking member; 224. Pin; 23. Universal bracket; 230. Playing space; 231. Sleeve; 232. Universal bracket body; 24. Cue stick; 241. Ball part; 242. Rod body; 25. Locking assembly; 251. Top pin; 252. Locking member; 26. Connecting rod; 100. Tibial platform; 200. Tibial platform clamping component; 300. Display screen; 400. Tibial tracker. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] Please see Figures 1 to 4According to an embodiment of the present invention, a tibial platform visualization device is provided, comprising: a registration tracking component 1, a visualization tracking component 2, and a control component. The registration tracking component 1 is used to slide or select feature points at different positions on the tibial platform 100; the registration tracking component 1 has a first tracker 11; the visualization tracking component 2 is used to be mounted on a tibial platform clamping component 200; the visualization tracking component 2 has a second tracker 21; the control component is used to obtain position information of the registration tracking component 1 at different positions on the tibial platform 100 through the first tracker 11, and to obtain position information of the visualization tracking component 2 through the second tracker 21; wherein, when the registration tracking component 1 moves on the tibial platform 100, the control component obtains the relative position information of the registration tracking component 1 with respect to the visualization tracking component 2 at different positions on the tibial platform 100 through the first tracker 11 and the second tracker 21.

[0024] As can be seen, the tibial platform visualization device provided by this utility model includes a registration tracking component 1, a visualization tracking component 2, and a control component. The registration tracking component 1 can slide or select feature points at different positions on the tibial platform 100. The control component obtains the corresponding position information of the registration tracking component 1 at each position on the tibial platform 100 through the first tracker 11, thereby obtaining detailed position data of different positions on the tibial platform 100. The visualization tracking component 2 is used to be fixedly installed on the tibial platform clamping component 200. After installation, the visualization tracking component 2 is fixed relative to the tibial platform clamping component 200. The visualization tracking component 2 has a second tracker 21, and the control component can obtain the position information of the visualization tracking component 2 through the second tracker 21. By obtaining the position information of the visualization tracking component 2 and the position information of the registration tracking component 1 at different positions on the tibial platform 100, the control component obtains the relative position information of the registration tracking component 1 relative to the visualization tracking component 2 at different positions on the tibial platform 100, thereby obtaining the relative position information of the tibial platform 100 relative to the visualization tracking component 2.

[0025] Therefore, by sliding or clicking on feature points at different locations on the tibial platform 100, the registered tracking component 1 increases the number of data points collected. Compared to positioning methods that rely on only a few feature points or single location information, this method can more comprehensively reflect the spatial geometric features of the tibial platform and effectively reduce positioning errors caused by insufficient data. The control component obtains the relative position information of the registered tracking component 1 relative to the visual tracking component 2 at different positions on the tibial platform 100 through the first tracker 11 and the second tracker 21. This method of calculating relative position, combined with the position data of different tracking components, can more accurately determine the specific position and orientation of the tibial platform 100 in three-dimensional space, successfully avoiding positioning errors caused by the accumulation of errors from a single reference point, significantly improving the accuracy of tibial platform prosthesis positioning, and realizing the visual display of the tibial platform 100 in the system. In addition, the device exhibits good adaptability to the anatomical differences of the tibial platform among different patients. By flexibly collecting feature points and calculating relative positional relationships, it can provide strong support for doctors to tailor surgical plans, optimize surgical outcomes, and improve patient postoperative recovery. This tibial platform visualization device can effectively solve the technical problem of the difficulty in accurately positioning the tibial platform prosthesis during total knee replacement surgery assisted by orthopedic surgical navigation and positioning systems in existing technologies.

[0026] Specifically, such as Figure 2 and Figure 3 As shown, the visualization tracking component 2 further includes: a clamping assembly 22 for clamping or releasing the tibial plateau clamping component 200; the clamping assembly 22 is connected to a second tracker 21, and the second tracker 21 is movably disposed relative to the clamping assembly 22; the second tracker 21 is located above the clamping assembly 22 and is mounted on the tibial plateau clamping component 200 via the clamping assembly 22. With this structural arrangement, the clamping assembly 22 not only firmly clamps the tibial plateau clamping component 200, ensuring the stability of the component during surgery, but also allows for flexible release, facilitating quick disassembly and replacement, effectively improving the convenience of surgical operations. The movable arrangement of the second tracker 21 relative to the clamping assembly 22 gives the second tracker 21 a certain degree of freedom. This allows the second tracker 21 to adapt to different tibial plateau clamping components 200, thereby enabling the visualization tracking component 2 and the registered tracking component 1 to work efficiently together.

[0027] Furthermore, such as Figure 2 and Figure 3As shown, the clamping assembly 22 includes a first clamping member 221, a second clamping member 222, and a locking member 223. The first clamping member 221 and the second clamping member 222 are disposed opposite to each other and are rotatably connected. A clamping space is formed between the first clamping member 221 and the second clamping member 222. The locking member 223 is used to connect with the first clamping member 221 and the second clamping member 222 to clamp the tibial plateau clamping component 200. With this structural arrangement, the clamping space between the first clamping member 221 and the second clamping member 222 is flexibly adjustable and can be precisely adjusted according to the specific dimensions of the tibial plateau clamping component 200. This design allows the clamping assembly 22 to adapt to various tibial plateau clamping components 200 of different sizes and shapes, greatly enhancing the versatility and flexibility of the device. Meanwhile, the locking member 223 is easy to operate and can quickly lock the first clamping member 221 and the second clamping member 222, ensuring the stability of clamping during surgery. Moreover, the locking member 223 can also quickly release the first clamping member 221 and the second clamping member 222, allowing the visual tracking component 2 to quickly separate from the tibial platform clamping component 200.

[0028] Furthermore, when the visual tracking component 2 needs to be installed on the tibial platform clamping component 200, the first clamping member 221 and the second clamping member 222 move relative to each other through a rotatable connection, reducing the clamping space. The locking member 223 connects to the first clamping member 221 and the second clamping member 222 and applies a locking force, so that the two clamping members firmly clamp the tibial platform clamping component 200. When it is necessary to separate the visual tracking component 2 from the tibial platform clamping component 200, the operator releases the locking force through the locking member 223, and the first clamping member 221 and the second clamping member 222 separate under the action of the rotatable connection, increasing the clamping space, thereby separating the visual tracking component 2 from the tibial platform clamping component 200.

[0029] Optionally, the first clamping member 221 and the second clamping member 222 are hinged. Preferably, the first clamping member 221 and the second clamping member 222 are connected by a pin 224.

[0030] Optionally, the locking member 223 is a first hand-tightening screw, and the locking member 223 is threadedly connected to the first clamping member 221 and the second clamping member 222 respectively.

[0031] Specifically, such as Figure 2 and Figure 3As shown, the visual tracking component 2 also includes a universal bracket 23 and a stick 24. The universal bracket 23 is connected to the clamping assembly 22 and is located above the clamping assembly 22. The universal bracket 23 has a movable space 230. The stick 24 has a ball portion 241 and a rod body 242. The ball portion 241 is located at one end of the rod body 242 and is rotatably disposed within the movable space 230. The stick 24 is located above the universal bracket 23, and the end of the rod body 242 away from the ball portion 241 is connected to the second tracker 21. With this structural arrangement, the universal bracket 23 is connected to and located above the clamping assembly 22, providing the stick 24 with a movable space 230. The ball part 241 of the cue stick 24 is placed in the active space 230 and can rotate, so that the second tracker 21 connected to the cue body 242 can be flexibly adjusted in multiple directions, thereby enabling the second tracker 21 to adapt to different tibial plateau clamping components 200, so that the visual tracking component 2 and the registered tracking component 1 can work together efficiently.

[0032] Furthermore, such as Figure 2 and Figure 3 As shown, the universal support 23 includes a sleeve 231 and a universal support body 232. At least a portion of the universal support body 232 is inserted into the sleeve 231, and the sleeve 231 is fixedly connected to the universal support body 232, with the sleeve 231 positioned above the universal support body 232. A receiving groove for accommodating a portion of the ball 241 is formed at the top of the universal support body 232, and the inner wall of the sleeve 231 and the inner wall of the receiving groove form a movable space 230. This structural arrangement, by inserting at least a portion of the universal support body 232 into the sleeve 231 and fixing it relatively, creates a robust mechanical structure, improving the stability and reliability of the entire device. The ball 241 is located within the receiving groove of the universal support body 232 and is rotatable within the movable space formed by the sleeve 231 and the receiving groove. This design gives the ball rod 24 and the connected second tracker 21 multi-directional adjustment capabilities within a certain range, adapting to different surgical angles and operational needs, thus improving surgical flexibility.

[0033] Furthermore, the universal bracket body 232 has a limiting part, and the bottom of the sleeve 231 is limited to the limiting part to restrict the position of the sleeve 231 on the universal bracket body 232, prevent the sleeve 231 from moving too downward, and ensure that the connection between the universal bracket body 232 and the sleeve 231 is stable and reliable.

[0034] Specifically, such as Figure 2 and Figure 3As shown, the visual tracking component 2 also includes a locking component 25, which has a support portion and a locking portion. The support portion is disposed on the outer wall of the universal bracket body 232 and abuts against the universal bracket body 232. The locking portion is movably disposed on the outer wall of the universal bracket body 232 in a preset direction and is disposed opposite to the support portion. When the locking portion moves toward the universal bracket body 232 in the preset direction, the ball portion 241 of the stick 24 is locked in the universal bracket body 232 by the locking portion and the support portion.

[0035] With the above-described structure, the locking assembly 25, through the coordinated action of the support and locking parts, can stably lock the ball portion 241 of the lever 24 within the universal support body 232. When the locking part moves towards the universal support body 232 in a preset direction, it closely cooperates with the support part to form a stable clamping of the ball portion 241. This effectively prevents the ball portion 241 from moving in an unexpected direction, thereby improving the positional accuracy of the second tracker 21 in the surgical navigation system and providing more accurate positioning information for surgical operations.

[0036] Specifically, such as Figure 2 and Figure 3 As shown, the locking assembly 25 includes a top pin 251 and a locking member 252. The fixed end of the top pin 251 passes through the sleeve 231 and abuts against the universal bracket body 232. The top pin 251 is threadedly connected to the sleeve 231. The locking member 252 is movably mounted on the sleeve 231 in a preset direction so that the force-applying end of the locking member 252 is close to or away from the universal bracket body 232. When it is necessary to lock the ball part 241 of the cue stick 24 inside the universal bracket body 232, the locking member 252 moves toward the universal bracket body 232, and the ball part 241 of the cue stick 24 is locked inside the universal bracket body 232 by the locking member 252 and the top pin 251.

[0037] With the above-described structure, the ball portion 241 of the lever 24 can be stably locked within the universal support body 232 through the synergistic action of the top pin 251 and the locking member 252. The fixed end of the top pin 251 passes through the sleeve 231 and abuts against the universal support body 232, providing initial positioning and support. The locking member 252 moves along a preset direction to further clamp the ball portion 241, preventing its movement in an unexpected direction, thereby improving the positional accuracy of the second tracker 21 in the surgical navigation system. Simultaneously, the top pin 251 and the sleeve 231 are connected by threads, ensuring the stability of the top pin 251's position during locking, providing continuous and stable support, and avoiding positioning deviations caused by loosening of the top pin 251. The locking member 252 is movably inserted into the sleeve 231 along a preset direction, allowing the doctor to easily lock and release the ball portion 241. This design allows for quick adjustment of the position and angle of the cue stick 24 during surgery, and rapid locking after adjustment, without the need for complicated tools or steps, saving surgical time and improving surgical efficiency.

[0038] Furthermore, when it is necessary to lock the ball portion 241 of the cue stick 24 within the universal bracket body 232, the locking member 252 moves towards the universal bracket body 232 in a preset direction. The force-applying end of the locking member 252 gradually approaches and eventually abuts against the outer wall of the universal bracket body 232. As the locking member 252 moves further, it applies a clamping force to the ball portion 241, tightly clamping the ball portion 241 between the top pin 251 and the locking member 252. The synergistic effect of the top pin 251 and the locking member 252 generates sufficient friction and restraint to stably lock the ball portion 241 within the universal bracket body 232. This multi-directional constraint ensures that the ball portion 241 will not move unexpectedly after locking, thereby guaranteeing the stability of the position and angle of the second tracker 21. When it is necessary to release the ball portion 241, the locking member 252 moves away from the universal bracket body 232 in a preset direction, reducing the clamping force on the ball portion 241. The ball 241 returns to a free state within the activity space 230, and can readjust its position and angle.

[0039] Furthermore, the locking element 252 is threadedly engaged with the sleeve 231.

[0040] Optionally, the locking element 252 is a second hand-tightening screw, and the sleeve 231 is provided with an internal thread hole that matches the external thread of the second hand-tightening screw. The internal thread hole extends in a preset direction, and the second hand-tightening screw is threadedly engaged with the internal thread hole.

[0041] The preset direction is perpendicular to the vertical direction, and both the sleeve 231 and the connecting rod 26 extend in the vertical direction.

[0042] Specifically, such as Figure 2 and Figure 3As shown, the visual tracking component 2 also includes a connecting rod 26, which is disposed between the universal bracket 23 and the clamping assembly 22, and the two ends of the connecting rod 26 are respectively connected to the universal bracket 23 and the clamping assembly 22.

[0043] Specifically, such as Figure 2 and Figure 3 As shown, the second tracker 21 includes a first mounting base 211 and at least one first reflective ball 212, the first reflective ball 212 being disposed on the first mounting base 211.

[0044] Furthermore, there are multiple first reflective spheres 212, which are spaced apart on the first mounting base 211 and are not collinear. The first reflective spheres 212 are located on one side of the first mounting base 211. This structural arrangement provides multiple reflection points, allowing the system to perform more accurate three-dimensional positioning and reduce positioning errors caused by a single reflective sphere. The non-collinearity of the first reflective spheres avoids collinearity issues. Collinear reflective spheres can lead to ambiguity or errors in the positioning algorithm, while non-collinear arrangement provides richer spatial information and improves positioning accuracy. In addition, even if some reflective spheres are obscured, the remaining unobstructed spheres can still provide sufficient information for the system to maintain tracking of the second tracker 21's position.

[0045] Furthermore, the first mounting base 211 has a mounting groove on the side away from the first reflective ball 212, and the end of the ball stick 24 away from the universal bracket 23 is locked in the mounting groove. The first mounting base 211 and the ball stick 24 are fixedly connected by fasteners.

[0046] Optionally, the fastener is a screw.

[0047] Specifically, the control components include: an optical camera, which acquires position information of the registered tracking component 1 at different positions on the tibial plateau 100 via a first tracker 11, and acquires position information of the visual tracking component 2 via a second tracker 21.

[0048] Furthermore, the principle of optical camera data acquisition is as follows: Optical cameras are typically equipped with an active light source (such as an infrared emitter or a visible light emitter), which emits light towards a reflective sphere on the tracker. The reflective sphere (such as the first reflective sphere 212), due to its highly reflective surface, reflects the incident light back to the optical camera. The optical camera captures the reflected light and generates an image containing the reflective sphere's position information. The system then uses image processing algorithms to identify the reflective sphere's position coordinates within the image.

[0049] Furthermore, the system calculates the position and orientation of the tracker based on the position coordinates of the multiple reflective spheres. In this way, the optical camera can acquire the position information of the registered tracking component 1 at different positions on the tibial plateau 100 through the first tracker 11, and acquire the position information of the visual tracking component 2 through the second tracker 21.

[0050] Furthermore, the control component also includes a controller, which acquires the position information of the registered tracking component 1 at different positions on the tibial platform 100, as captured by the optical camera, and the position information of the visual tracking component 2. Based on the acquired information, the controller calculates the relative position information of the registered tracking component 1 with respect to the visual tracking component 2 at different positions on the tibial platform 100, thereby obtaining the relative position information of the tibial platform 100 with respect to the visual tracking component 2.

[0051] Specifically, the registration tracking component 1 also includes a probe 12 and a connecting rod 13. The probe 12 is connected to the first tracker 11 via the connecting rod 13, and the probe 12 is used to contact the tibial plateau 100.

[0052] Furthermore, the first tracker 11 includes a second mounting base 111 and a plurality of second reflective balls 112, the plurality of second reflective balls 112 being spaced apart on the second mounting base 111, and the second mounting base 111 being connected to the connecting rod 13.

[0053] Optionally, the working process of the tibial plateau visualization device is as follows: 1. Install the visual tracking component 2 When the visual tracking component 2 is installed on the tibial plateau clamping component 200, the first clamping member 221 and the second clamping member 222 achieve relative movement through a rotatable connection, gradually reducing the clamping space between them. Subsequently, the locking member 223 applies a locking force to the first clamping member 221 and the second clamping member 222, firmly clamping them onto the tibial plateau clamping component 200, ensuring that the visual tracking component 2 remains stable and without relative displacement during the operation.

[0054] 2. Adjust the angle of the second tracker 21 Based on the actual installation position and spatial layout of the tibial plateau clamping component 200, the second tracker 21 is rotated to a suitable angle to ensure it can be effectively identified by the optical camera, thereby achieving accurate acquisition of position information. After adjustment, the locking member 252 moves towards the universal support body 232 along a preset direction. The force-applying end of the locking member 252 gradually approaches and eventually abuts against the outer wall of the universal support body 232. As the locking member 252 moves further, it applies a clamping force to the ball portion 241, tightly clamping the ball portion 241 between the top pin 251 and the locking member 252. The synergistic effect of the top pin 251 and the locking member 252 generates sufficient friction and restraint force to stably lock the ball portion 241 within the universal support body 232.

[0055] 3. Perform registration: Select or slide to collect feature points. The registration and tracking component 1 is operated to slide or select multiple feature locations point by point on the surface of the tibial plateau 100. During this process, the optical camera collects the spatial coordinate information of the device at different positions in real time through the first tracker 11 on the registration and tracking component 1, thereby obtaining the spatial distribution data of multiple points on the surface of the tibial plateau.

[0056] 4. Obtain the relative position information of the registered tracking component 1 with respect to the visual tracking component 2 at different positions on the tibial plateau 100. The controller uses the position information of the registered tracking component 1 at different positions on the tibial platform 100 acquired by the optical camera, as well as the position information of the visual tracking component 2, to calculate the relative position information of the registered tracking component 1 with respect to the visual tracking component 2 at different positions on the tibial platform 100, thereby obtaining the relative position information of the tibial platform 100 with respect to the visual tracking component 2.

[0057] like Figure 5 As shown, this utility model provides a surgical navigation and positioning system, including: the tibial platform visualization device of the above embodiment.

[0058] Specifically, the surgical navigation and positioning system also includes: a tibial plateau clamping component 200 for clamping the tibial plateau 100.

[0059] Specifically, the surgical navigation and positioning system also includes a display screen 300 and a tibial tracker 400. The display screen 300 is connected to the control unit of the tibial platform visualization device. The tibial tracker 400 is used to be installed on the tibia. An optical camera is used to collect the position information of the tibial tracker 400, thereby obtaining the relative position information of the tibial tracker 400 and the visualization tracking component 2. The control unit then uploads its position information, the relative position information of the tibial platform 100 relative to the visualization tracking component 2, and the position information of the tibial platform 100 to the display screen 300, and displays the relative position relationship of the tibial platform 100 relative to the tibia on the software interface of the display screen 300. This assists the doctor in completing the precise installation of the tibial platform 100.

[0060] Optionally, the working process of the surgical navigation and positioning system is as follows: First, the position information of the tibial platform 100 at different positions, the position information of the visualization tracking component 2, and the relative position information of the tibial platform 100 with respect to the visualization tracking component 2 are acquired through the tibial platform visualization device. Simultaneously, the position of the tibial tracker 400 and its relative position with the visualization tracking component 2 are acquired. After processing by the control component, this data is transmitted to the software interface, where 3D modeling and real-time updates present the actual spatial posture of the tibial platform 100 and its relative positional relationship with the tibia.

[0061] Subsequently, based on the real-time image information displayed on the software interface, the doctor manually moves and adjusts the tibial platform clamping component 200, which is equipped with the visual tracking component 2, to move and position the tibial platform 100. During this process, the system continuously collects the relative positional changes between the tibial tracker 400 and the visual tracking component 2, and updates the current position and posture of the tibial platform 100 relative to the tibia on the software interface in real time.

[0062] Through this closed-loop feedback mechanism, doctors can intuitively and dynamically observe the adjustment effect and correct the installation angle and position in a timely manner, thereby achieving high-precision and personalized implantation of the tibial plateau prosthesis and effectively improving the accuracy and repeatability of total knee replacement surgery.

[0063] After collecting position information of the tibial plateau 100 at different positions, the registration tracking component 1 is placed on the operating table.

[0064] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0065] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0066] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0067] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0068] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A visualization device for the tibial plateau, characterized in that, include: A registration tracking component (1) is used to slide or click on feature points at different locations on the tibial plateau (100); the registration tracking component (1) has a first tracker (11). A visual tracking component (2) is provided for mounting on a tibial plateau clamping component (200); the visual tracking component (2) has a second tracker (21). The control unit acquires position information of the registered tracking unit (1) at different positions on the tibial plateau (100) via the first tracker (11) and position information of the visual tracking unit (2) via the second tracker (21); When the registered tracking component (1) moves on the tibial platform (100), the control component obtains the relative position information of the registered tracking component (1) relative to the visual tracking component (2) at different positions on the tibial platform (100) through the first tracker (11) and the second tracker (21).

2. The tibial plateau visualization device according to claim 1, characterized in that, The visual tracking component (2) further includes: a clamping assembly (22) for clamping or releasing the tibial plateau clamping component (200); the clamping assembly (22) is connected to the second tracker (21), and the second tracker (21) is movably disposed relative to the clamping assembly (22); the second tracker (21) is located above the clamping assembly (22), and the second tracker (21) is mounted on the tibial plateau clamping component (200) via the clamping assembly (22).

3. The tibial plateau visualization device according to claim 2, characterized in that, The clamping assembly (22) includes: A first clamping member (221) and a second clamping member (222) are disposed opposite to each other and are rotatably connected; a clamping space is formed between the first clamping member (221) and the second clamping member (222). A locking member (223) is used to connect with the first clamping member (221) and the second clamping member (222) to clamp the tibial plateau clamping member (200) by means of the locking member (223).

4. The tibial plateau visualization device according to claim 2, characterized in that, The visualization tracking component (2) also includes: Universal bracket (23), the universal bracket (23) is connected to the clamping assembly (22), and the universal bracket (23) is located above the clamping assembly (22). The universal bracket (23) has an active space (230). The cue stick (24) has a ball part (241) and a shaft (242). The ball part (241) is located at one end of the shaft (242). The ball part (241) is rotatably disposed within the active space (230). The cue stick (24) is located above the universal bracket (23). The end of the shaft (242) away from the ball part (241) is connected to the second tracker (21).

5. The tibial plateau visualization device according to claim 4, characterized in that, The universal bracket (23) includes a sleeve (231) and a universal bracket body (232). At least a portion of the universal bracket body (232) is inserted into the sleeve (231). The sleeve (231) is fixedly connected to the universal bracket body (232) and the sleeve (231) is located above the universal bracket body (232). The top of the universal bracket body (232) is provided with a receiving groove for accommodating the ball portion (241). The inner wall of the sleeve (231) and the inner wall of the receiving groove form the movable space (230).

6. The tibial plateau visualization device according to claim 5, characterized in that, The visual tracking component (2) further includes a locking component (25), which has a support portion and a locking portion. The support portion is disposed on the outer wall of the universal bracket body (232) and abuts against the universal bracket body (232). The locking portion is movably disposed on the outer wall of the universal bracket body (232) along a preset direction and is disposed opposite to the support portion. When the locking portion moves toward the universal bracket body (232) along the preset direction, the ball portion (241) of the cue stick (24) is locked inside the universal bracket body (232) by the locking portion and the support portion.

7. The tibial plateau visualization device according to claim 6, characterized in that, The locking component (25) includes: A top pin (251) is provided, with its fixed end passing through the sleeve (231) and abutting against the universal bracket body (232); the top pin (251) is threadedly connected to the sleeve (231). A locking member (252) is movably inserted into the sleeve (231) along the preset direction so that the force-applying end of the locking member (252) is close to or away from the universal bracket body (232). When it is necessary to lock the ball part (241) of the cue stick (24) inside the universal bracket body (232), the locking member (252) moves toward the universal bracket body (232), and the ball part (241) of the cue stick (24) is locked inside the universal bracket body (232) by the locking member (252) and the top pin (251).

8. The tibial plateau visualization device according to claim 4, characterized in that, The visualization tracking component (2) further includes a connecting rod (26), which is disposed between the universal bracket (23) and the clamping assembly (22), and the two ends of the connecting rod (26) are respectively connected to the universal bracket (23) and the clamping assembly (22).

9. The tibial plateau visualization device according to claim 1, characterized in that, The second tracker (21) includes: a first mounting base (211) and at least one first reflective ball (212), the first reflective ball (212) being disposed on the first mounting base (211); and / or, The control component includes an optical camera that acquires position information of the registered tracking component (1) at different positions on the tibial plateau (100) via the first tracker (11) and acquires position information of the visual tracking component (2) via the second tracker (21).

10. A surgical navigation and positioning system, characterized in that, include: The tibial plateau visualization device according to any one of claims 1 to 9.

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