Combined reconstruction device for acetabular bone defect

Abstract

The invention provides a combined reconstruction device for acetabular bone defects, and belongs to the technical field of medical instruments. The device comprises a rack, the bottom of the rack is fixedly connected with a second linear sliding rail, the top of the second linear sliding rail is fixedly connected with a hydraulic cylinder, the top of the rack is fixedly connected with a first linear sliding rail, and the top of the first linear sliding rail is fixedly connected with a sliding plate; the lifting assembly is used for lifting the patient to the height flush with the wading plate; the supporting assembly is not only used for supporting the waist of the patient, but also used for locking the lifting assembly in a matched mode. By arranging the lifting assembly, a user can be automatically lifted to the position flush with the height of the sliding plate, the user can be automatically transferred to the surface of the sliding plate on the premise that the user does not need to move, and in the process, the user does not need to twist or move on the body; therefore, the stability of the body of the user in the transfer process is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a combined reconstruction device for acetabular bone defects. Background Art

[0002] In recent years, with the rapid development and promotion of 3D printing technology, 3D printing technology can now be used to create structural models and medical implants, which significantly helps surgeons plan and perform operations more accurately. The application of 3D printing technology in acetabular bone defect reconstruction mainly includes individualized customized anatomical models, preoperative simulation surgery and personalized customized prostheses. Using 3D printing technology to print an actual size pelvic model, surgeons can fully understand anatomical abnormalities and develop a more complete surgical plan.

[0003] In combined reconstruction surgery of acetabular bone defects, in complex cases of extensive bone defects, traditional planning using X-rays and traditional CT scans may not accurately reflect the patient's actual condition. By scanning and determining the site of the acetabular bone defect with a scanning device, analyzing the defect, and using 3D printing technology to print out an acetabular bone repair model based on the defect, the manufactured acetabular bone repair model can help doctors better understand preoperative anatomical problems and minimize intraoperative problems. The use of the acetabular bone repair model in preoperative planning can help doctors shorten intraoperative fluoroscopy time, reduce bleeding, and shorten operation time.

[0004] In the above-mentioned related technologies, during the scanning of the patient's acetabulum, the patient is generally transferred from a stretcher or wheelchair to the device, and multiple staff members are required to help at the same time. In addition, the patient's body needs to be twisted and bent during the transfer process. Therefore, the operator and the patient must be extra careful to prevent bumps and collisions, especially the patient's waist position, which makes the patient's transfer process less efficient and safe. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a combined reconstruction device for acetabular bone defects, so as to solve the problems of low transport efficiency and potential safety hazards when users use existing reconstruction devices.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A combined reconstruction device for acetabular bone defects, comprising a frame. At one end of the frame, a scanning unit is installed, which is used to scan the acetabular bone of a patient. At the other end of the frame, a 3D printing unit is installed, which is used to physically print out the patient's acetabular bone model scanned by the scanning unit. At the bottom of the frame, a second linear slide rail is fixedly connected, and at the top of the second linear slide rail, a hydraulic cylinder is fixedly connected. At the top of the frame, a first linear slide rail is fixedly connected, and at the top of the first linear slide rail, a trolley board is fixedly connected; a lifting assembly, which is used to lift the patient to a height level with the trolley board. The lifting assembly is divided into two states: before lifting and after lifting. Before lifting, the lifting assembly is connected to the hydraulic cylinder, and after lifting, the lifting assembly is respectively connected to the hydraulic cylinder and the trolley board; a support assembly, which is not only used to support the patient's waist, but also used to cooperate with locking the lifting assembly. The support assembly is respectively connected to the trolley board and the lifting assembly after lifting.

[0008] Optionally, the lifting assembly includes a base tray fixedly connected to the output end of the hydraulic cylinder. A sliding seat plate is slidably connected inside the base tray, and a rotating seat plate is rotatably connected inside the sliding seat plate. A seat plate positioning groove adapted to the shape of the sliding seat plate is formed on the trolley board. The rotating seat plate can slide with the sliding seat plate into the seat plate positioning groove, and the support assembly is connected to the rotating seat plate after it slides into the seat plate positioning groove.

[0009] Optionally, limit blocks are fixedly connected to both side walls of the sliding seat plate, and limit plates adapted to the shape of the limit blocks are symmetrically installed on both inner walls of the base tray and both inner walls of the seat plate positioning groove.

[0010] Optionally, limit balls are provided at the bottom of the rotating seat plate and the top of the sliding seat plate. The middle position of the top of the rotating seat plate is an inwardly concave arc-shaped structure, and anti-slip patterns are provided at the edge position of the top of the rotating seat plate.

[0011] Optionally, a side plate is fixedly connected to one end of the base tray close to the trolley board. A convex portion is fixedly connected to the outer wall of the bottom of the trolley board on the side close to the base tray. A concave portion adapted to the shape of the convex portion is formed at the top of the side plate, and a weakening groove is formed at the connection position between the side plate and the bottom tray.

[0012] Optionally, positioning inserts are fixedly connected to one side of the side plate close to the sliding seat plate and the inner wall of the seat plate positioning groove far from the base tray. A positioning slot adapted to the shape of the positioning insert is formed on the outer wall of the sliding seat plate on the side close to the side plate.

[0013] Optionally, the support component includes a lumbar and back support plate fixedly connected to the upper surface of the stretcher board and having a curved surface structure. The upper surface of the stretcher board is fixedly connected with elastic sheets arranged linearly. One end of each elastic sheet is fixedly connected with an arc-shaped support plate, and a Y-shaped pressing plate is fixedly connected to the inner wall of the lumbar and back support plate.

[0014] Optionally, the number of both the elastic sheets and the arc-shaped support plates is four groups, and the outer wall of the arc-shaped support plate abuts against the inner wall of the lumbar and back support plate.

[0015] Optionally, a first arc-shaped plate is fixedly connected to the middle position of the Y-shaped pressing plate, and a second arc-shaped plate is fixedly connected to one end of the Y-shaped pressing plate. The upper surface of the stretcher board is fixedly connected with a first guiding plate located at the bottom of the second arc-shaped plate, and the upper surface of the stretcher board is fixedly connected with a second guiding plate located at the bottom of the second arc-shaped plate.

[0016] Optionally, a locking plug is fixedly connected to the end of the Y-shaped pressing plate far from the second arc-shaped plate, and a locking slot adapted to the shape of the locking plug is formed on the outer wall of the rotating seat board.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above solution, by setting the lifting component, not only can the user be automatically lifted to a position flush with the height of the stretcher board, but also the user can be automatically transferred to the surface of the stretcher board without moving. During the above process, the user does not need to make any physical twists or movements, thereby ensuring the stability of the user's body during the transfer process.

[0019] By setting a limiting block and a limiting plate in the lifting component, since the shapes of the limiting block and the limiting plate are mutually adapted, and when the two are clamped together, an arc-shaped structure similar to a snail shape is formed. Such a structure makes the limiting block and the limiting plate bite together with each other, thereby improving the stability and firmness of the cooperation between the two. When the user pushes the sliding seat board into the seat board positioning groove, the limiting block on the sliding seat board disengages from the limiting plate on the base tray and then seamlessly engages with the limiting plate inside the seat board positioning groove. Such a setting can not only achieve the transfer effect of the sliding seat board, but also greatly improve the stability of the sliding seat board during the transfer process. The setting of the above structure can further improve the stability of the patient's body during the operation of the lifting component and the convenience during the operation of the lifting component, and improve the overall practicality of the lifting component.

[0020] By arranging side plates within the lifting component, the side plates can not only limit the sliding seat plate, but also automatically release the limiting effect on the side plates when the sliding seat plate is lifted to the position of the wading plate. The above design can not only improve the stability of the sliding seat plate during the lifting process, but also, during the process of releasing the limit, eliminate the need for any operation by the operator, thus improving the convenience of operating the lifting component.

[0021] By arranging a support component, the waist of the user can be automatically supported. After the waist of the user is supported, it is more convenient for the scanning unit to perform scanning processing. Moreover, under the combined action of the elastic piece and the arc-shaped support plate, the back and waist support plate has a certain function of buffering and shock absorption for the waist of the user. Such an arrangement can not only improve the comfort of the user's waist, but also prevent the user from being accidentally injured in the waist due to the vibration force generated by the movement of the first linear slide rail during the transfer process.

[0022] By arranging a Y-shaped pressing plate, two groups of arc-shaped plates and two groups of guide plates within the support component, during the process of the back and waist support plate being pressed and deformed, the two groups of arc-shaped plates cooperate with the arc-shaped settings of the two groups of guide plates, and with the extrusion force during the deformation process of the back and waist support plate, the locking plug at one end of the Y-shaped pressing plate directly engages and abuts against the locking slot on the rotating seat plate, thereby realizing the limiting effect on the rotating seat plate, making the user's buttocks unable to rotate during the scanning process, and improving the stability of the user's buttocks while also improving the accuracy of scanning.

[0023] By arranging the lifting component and the support component, from the perspective of the usage process of the device, the two components complement each other and are seamlessly connected in function, and both components can provide a more comfortable and safe usage environment for the user. From a structural perspective, the two components can form a structural cooperation, and the achieved effect is to limit the lifting component with the support component, further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the combined reconstruction device for acetabular bone defects of the present invention;

[0026] Figure 2 It is an enlarged three-dimensional structural schematic diagram of the cooperation of the frame, the lifting component and the support component;

[0027] Figure 3 It is an enlarged three-dimensional structural schematic diagram of the cooperation of the lifting component;

[0028] Figure 4 Schematic diagram of the combined sectional three-dimensional structure of the base tray, sliding seat plate, rotating seat plate and side plate;

[0029] Figure 5 Schematic diagram of the combined sectional three-dimensional structure of the base tray, sliding seat plate and rotating seat plate;

[0030] Figure 6 Schematic diagram of the combined partial sectional structure of the base tray, sliding seat plate and rotating seat plate;

[0031] Figure 7 Schematic diagram of the combined sectional structure of the base tray, sliding seat plate, rotating seat plate and side plate;

[0032] Figure 8 Schematic diagram of the enlarged three-dimensional structure of the lifting component and the support component in cooperation;

[0033] Figure 9 Schematic diagram of the enlarged partial structure of the side plate and the sliding plate in cooperation;

[0034] Figure 10 Schematic diagram of the combined sectional three-dimensional structure of the support component;

[0035] Figure 11 Schematic diagram of the enlarged three-dimensional structure of the arc-shaped support plate and the elastic piece in cooperation;

[0036] Figure 12 Schematic diagram of the combined sectional structure of the support component;

[0037] Figure 13 Schematic diagram of the enlarged three-dimensional structure of the Y-shaped pressing plate, the first guide plate and the second guide plate in cooperation.

[0038] [Reference Signs]

[0039] 1. Frame; 2. Scanning unit; 3. 3D printing unit; 4. Hydraulic cylinder; 5. Base tray; 6. Sliding seat plate; 7. Rotating seat plate; 8. Side plate; 9. Limit block; 10. Limit plate; 11. Limit ball; 12. Positioning slot; 13. Positioning plug; 14. Depressed part; 15. Weakening groove; 16. First linear slide rail; 17. Sliding plate; 18. Seat plate positioning groove; 19. Lumbar support plate; 20. Protruding part; 21. Arc-shaped support plate; 22. Elastic piece; 23. Y-shaped pressing plate; 24. First arc-shaped plate; 25. Second arc-shaped plate; 26. Locking plug; 27. First guide plate; 28. Second guide plate; 29. Locking slot; 30. Second linear slide rail.

[0040] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are labeled in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device, and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0041] The following describes in detail a combined reconstruction device for acetabular bone defects provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative ways for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0042] It should be noted that in the specification, the mention of "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicates that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe specific features, structures, or characteristics, implementing such features, structures, or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0043] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey a set of exclusive factors, but rather, at least in part depending on the context, to allow for the existence of other factors that may not be explicitly described.

[0044] It can be understood that the meanings of "on...", "above...", and "overhead of..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intermediate features or layers therebetween, and "above..." or "overhead of..." not only means "above" or "overhead of" something, but also can include the meaning of being "above" or "overhead of" something with no intermediate features or layers therebetween.

[0045] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. may be used in this document for convenience of description to describe the relationship between one element or feature and another or multiple other elements or features, as shown in the drawings. Spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptive terms used herein may be similarly interpreted accordingly.

[0046] As Figures 1 to 13 shown, an embodiment of the present invention provides a combined reconstruction device for acetabular bone defects, including a frame 1. One end of the frame 1 is equipped with a scanning unit 2 for scanning the acetabular bone of a patient. The other end of the frame 1 is equipped with a 3D printing unit 3 for physically printing the patient's acetabular bone model obtained by scanning of the scanning unit 2. The bottom of the frame 1 is fixedly connected with a second linear slide rail 30, and the top of the second linear slide rail 30 is fixedly connected with a hydraulic cylinder 4. The top of the frame 1 is fixedly connected with a first linear slide rail 16, and the top of the first linear slide rail 16 is fixedly connected with a trolley plate 17; a lifting assembly for lifting the patient to a height level with the trolley plate 17. The lifting assembly is divided into two states: before lifting and after lifting. Before lifting, the lifting assembly is connected to the hydraulic cylinder 4, and after lifting, the lifting assembly is respectively connected to the hydraulic cylinder 4 and the trolley plate 17; a supporting assembly for not only supporting the patient's waist but also cooperating to lock the lifting assembly. The supporting assembly is respectively connected to the trolley plate 17 and the lifting assembly after lifting.

[0047] During the use of the device, first use the lifting assembly to lift the patient to a height level with the trolley plate 17, and then slide the patient onto the trolley plate 17. When the patient lies flat on the surface of the trolley plate 17, the supporting assembly can not only support the patient's waist but also limit the lifting assembly. After the patient lies down, the first linear slide rail 16 operates to transport the trolley plate 17 together with the patient to the scanning unit 2, and the scanning unit 2 is used to scan the acetabular bone of the patient's waist. The obtained scanning result is processed by a computer and transmitted to the 3D printing unit 3, and the 3D printing unit 3 prints out a physical model of the patient's acetabular bone. After the patient is scanned, the first linear slide rail 16 operates again to move the patient to the initial position, and at this time, the patient can be quickly transferred from the device with the help of the lifting assembly.

[0048] As Figures 1 to 7As shown, the lifting component includes a base tray 5 fixedly connected to the output end of the hydraulic cylinder 4. A sliding seat plate 6 is slidably connected inside the base tray 5, and a rotating seat plate 7 is rotatably connected inside the sliding seat plate 6. A seat plate positioning groove 18 adapted to the shape of the sliding seat plate 6 is formed on the tread plate 17. The rotating seat plate 7 can slide together with the sliding seat plate 6 into the seat plate positioning groove 18. The support component is connected to the rotating seat plate 7 after it slides into the seat plate positioning groove 18. The lifting component is fixed to the bottom of the frame 1 through the second linear slide rail 30. Therefore, the lifting component can freely slide at the bottom of the frame 1 under the driving action of the second linear slide rail 30. Such a setting is to enable the lifting component to slide and be stored inside the frame 1 when not in use, thereby reducing the overall floor space of the device. The lifting component is composed of three parts in total. One part is the base tray 5, one part is the sliding seat plate 6 that can freely slide inside the base tray 5, and the other part is the rotating seat plate 7 that can rotate inside the sliding seat plate 6. The above three parts are not only interlocked but also can freely lift under the driving action of the hydraulic cylinder 4.

[0049] Limit balls 11 are provided at the bottom of the rotating seat plate 7 and the top of the sliding seat plate 6. The middle position of the top of the rotating seat plate 7 is an inwardly concave arc-shaped structure, and anti-slip lines are provided at the edge position of the top of the rotating seat plate 7. The above structural settings are to enable the rotating seat plate 7 to freely rotate on the sliding seat plate 6. First, the rotating seat plate 7 is located in the middle position of the sliding seat plate 6 and is slightly higher in height than the sliding seat plate 6. Second, since the sliding seat plate 6 and the rotating seat plate 7 are connected by limit balls 11, the rotating seat plate 7 can freely rotate on the sliding seat plate 6. Coupled with the dimensional setting of the height difference between the two, when the user sits on the surface of the rotating seat plate 7, the body angle can be freely rotated and adjusted. In addition, the middle position of the top of the rotating seat plate 7 has an inwardly concave arc-shaped structure. Such a structural setting is to enable the user's buttocks to be automatically limited by means of its inwardly concave arc-shaped structure when sitting on the rotating seat plate 7, improving the comfort of the user while also improving the stability of the body. The setting of the anti-slip lines can increase the friction between the user's buttocks and the rotating seat plate 7, thereby preventing the phenomenon of the user's buttocks slipping off.

[0050] As Figures 3 to 8As shown, limit blocks 9 are fixedly connected to both side walls of the sliding seat plate 6. Limit plates 10 that are shape-matched with the limit blocks 9 are symmetrically installed on both inner side walls of the base tray 5 and both inner side walls of the seat plate positioning groove 18. First, when the sliding seat plate 6 is lifted or lowered to a state where it is at the same height as the step plate 17, the sliding seat plate 6 is preferably located at the position of the seat plate positioning groove 18. Moreover, the seat plate positioning groove 18 is adapted to the sliding seat plate 6 in terms of both size and structure. Therefore, the user can slide the sliding seat plate 6 to make it slide into the seat plate positioning groove 18, thereby enabling the user to transfer from the base tray to the step plate 17. To achieve the sliding effect between the two, limit blocks 9 are installed on both side walls of the sliding seat plate 6, and limit plates 10 are installed on the inner walls of the corresponding base tray 5 and the seat plate positioning groove 18. Since the shapes of the limit blocks 9 and the limit plates 10 are mutually adapted, and when the two are clamped together, an arc-shaped structure similar to a snail shape is formed. Such a structure allows the limit blocks 9 and the limit plates 10 to bite into each other, thereby improving the stability and firmness of the cooperation between the two. When the user pushes the sliding seat plate 6 into the seat plate positioning groove 18, the limit blocks 9 on the sliding seat plate 6 disengage from the limit plates 10 on the base tray 5 and then seamlessly engage with the limit plates 10 inside the seat plate positioning groove 18. Such a setting can not only achieve the transfer effect of the sliding seat plate 6 but also greatly improve the stability of the sliding seat plate 6 during the transfer process.

[0051] As Figures 4 to 9 shown, a side plate 8 is fixedly connected to one end of the base tray 5 close to the step plate 17. A convex portion 20 is fixedly connected to the bottom outer wall of one side of the step plate 17 close to the base tray 5. A recessed portion 14 that is shape-matched with the convex portion 20 is formed at the top of the side plate 8. A weakening groove 15 is formed at the connection position between the side plate 8 and the bottom tray. Positioning plugs 13 are fixedly connected to both the side of the side plate 8 close to the sliding seat plate 6 and the inner wall of the side of the seat plate positioning groove 18 away from the base tray 5. A positioning slot 12 that is shape-matched with the positioning plug 13 is formed on the outer wall of one side of the sliding seat plate 6 close to the side plate 8.

[0052] The side panel 8 is composed of three parts in total, one part is a plate body with an inclined angle directly connected to the base tray 5, one part is a recessed portion 14 located at the top of the side panel 8, and the other part is a vertical panel body close to the outer wall of the sliding seat plate 6. A positioning block 13 that is compatible with the shape of the positioning slot 12 is installed on the vertical panel body. In the default state, the positioning block 13 on the vertical panel body is inserted into the positioning slot 12. Under the effect of the card-joined limit of the positioning block 13 and the positioning slot 12, the side panel 8 can limit the sliding seat plate 6. When the sliding seat plate 6 moves to the position of the trip plate 17, the recessed portion 14 on the side panel 8 will be aligned with the trip plate 17. The raised portions 20 on the bottom outer wall cooperate and abut against each other. At this time, the base tray 5 continues to move upward. Under the joint blocking action of the raised portions 20 and the trip plate 17, the side plate 8 will be driven to deform. The deformation position is the weakened groove 15 at the connection position of the side plate 8 and the base tray 5. The side plate 8 will flip from the position of the weakened groove 15 and make the positioning block 13 on the vertical plate body disengage from the positioning slot 12. When the height of the sliding seat plate 6 is the same as that of the trip plate 17, the vertical plate body is located directly below the bottom of the trip plate 17 and is parallel to the bottom of the trip plate 17. At this time, the user can push the sliding seat plate 6 to slide it from the base tray 5 into the seat plate positioning groove 18.

[0053] When the sliding seat plate 6 slides to the end of the seat plate positioning groove 18, the positioning slot 12 on the sliding seat plate 6 will be directly plugged into and matched with the positioning block 13 on the seat plate positioning groove 18, and with the help of the clamping effect of the positioning block 13 and the positioning slot 12, as well as the limiting effect of the limit block 9 and the limit plate 10, the locking and limiting of the sliding seat plate 6 is achieved.

[0054] like Figure 1 , Figure 8 and Figures 10 to 12As shown, the support assembly includes a lumbar support plate 19 fixedly connected to the upper surface of the stretcher board 17 and having a curved surface structure. A plurality of elastic sheets 22 arranged linearly are fixedly connected to the upper surface of the stretcher board 17. One end of each elastic sheet 22 is fixedly connected to an arc-shaped support plate 21. The number of both the elastic sheets 22 and the arc-shaped support plates 21 is four groups. The outer wall of the arc-shaped support plate 21 abuts against the inner wall of the lumbar support plate 19. A Y-shaped pressing plate 23 is fixedly connected to the inner wall of the lumbar support plate 19. When the user lies flat on the stretcher board 17, the user's waist is just located on the lumbar support plate 19. Both ends of the lumbar support plate 19 are fixed to the upper surface of the stretcher board 17, and there is a structure protruding upward in the middle. One end of the elastic sheet 22 is fixed to the upper surface of the stretcher board 17, and the other end is connected to the arc-shaped support plate 21. The structural contour formed by the cooperation of multiple arc-shaped support plates 21 is the same as the contour of the lumbar support plate 19, and the elastic sheet 22 itself can provide elastic support for the arc-shaped support plate 21. Therefore, the outer wall of the arc-shaped support plate 21 can abut against the inner wall of the lumbar support plate 19. The above structural setting enables the lumbar support plate 19 to protrude in the default state and have a certain supporting ability.

[0055] Centered on the structure with the middle protrusion of the lumbar support plate 19, the inclination arc of the lumbar support plate 19 closer to the seat plate positioning groove 18 is relatively gentle, and the arc of the lumbar support plate 19 farther from the seat plate positioning groove 18 is relatively steep. The elastic sheets 22 inside the lumbar support plate 19 are not only arranged linearly, but also the elastic performance of the elastic sheets 22 closer to the middle protrusion structure is stronger. Such a structural setting, combined with the plate body with different arcs on both sides of the lumbar support plate 19, can enable the lumbar support plate 19 to automatically support the user's waist when the user lies flat on the surface of the lumbar support plate 19. After the user's waist is supported, it is more convenient for the scanning unit 2 to perform scanning processing. Moreover, under the combined action of the elastic sheets 22 and the arc-shaped support plates 21, the lumbar support plate 19 has a certain function of buffering and shock absorption for the user's waist. Such a setting can not only improve the comfort of the user's waist, but also prevent the user from being accidentally injured to the waist due to the vibration force generated by the movement of the first linear slide rail 16 during the transfer process.

[0056] As Figure 8 、 Figure 12 and Figure 13As shown, the middle position of the Y-shaped pressing plate 23 is fixedly connected with the first curved plate 24, one end of the Y-shaped pressing plate 23 is fixedly connected with the second curved plate 25, the upper surface of the running plate 17 is fixedly connected with the first guide plate 27 located at the bottom of the second curved plate 25, the upper surface of the running plate 17 is fixedly connected with the second guide plate 28 located at the bottom of the second curved plate 25, the end of the Y-shaped pressing plate 23 away from the second curved plate 25 is fixedly connected with a locking plug 26, and a locking slot 29 matching the shape of the locking plug 26 is provided on the outer wall of the rotating seat plate 7. The Y-shaped pressing plate 23 and the inner wall of the waist and back support plate 19 are connected through the first curved plate 24 and the second curved plate 25. The first curved plate 24 and the second curved plate 25 cooperate with the structure between the Y-shaped pressing plate 23 to form a Y-shaped profile. The first guide plate 27 and the second guide plate 28 are located in the second curved plate 26 in sequence. At the bottom of the arc plate 25 and the first arc plate 24, one end of the two sets of guide plates are fixed on the running board 17, and the other end is an open and suspended structure. Since the curved directions of the two sets of guide plates and the two sets of arc plates are consistent, when the user lies flat on the upper surface of the waist and back support plate 19, the waist support plate will be pressed down. During the downward pressure of the waist support plate, the first arc plate 24 and the second arc plate 25 will receive pressure and transfer the pressure to the plate body of the Y-shaped pressure plate 23. At this time, with the help of the arc structure of the two arc plates and the guiding effect of the two sets of guide plates, the locking block 26 at one end of the Y-shaped pressure plate 23 will move toward the locking slot 29. After the locking block 26 moves into the locking slot 29, the two will conflict with each other, and the rotating seat plate 7 will be limited by friction, so that the rotating seat plate 7 cannot continue to rotate.

[0057] Through the above-mentioned arrangement, when the waist and back support plate 19 is pressed and deformed, the two groups of arc plates cooperate with the arc-shaped arrangement of the two groups of guide plates, and with the help of the extrusion force during the deformation of the waist and back support plate 19, the locking plug 26 at one end of the Y-shaped pressure plate 23 is directly engaged and abutted against the locking slot 29 on the rotating seat plate 7, thereby achieving a limiting effect on the rotating seat plate 7, so that the user's buttocks cannot rotate during the scanning process, thereby improving the stability of the user's buttocks and the accuracy of the scanning.

[0058] The workflow of the technical solution provided by the present invention is as follows:

[0059] In use, the operator first places the patient on the lifting component, then uses the lifting component to lift the patient to a height level with the stretcher 17, and then slides the patient onto the stretcher 17. After the patient lies well on the stretcher 17, the first linear slide rail 16 operates to transport the stretcher 17 together with the patient to the scanning unit 2. With the help of the scanning unit 2, the lumbar acetabulum of the patient is scanned. The scanned result is processed by a computer and transmitted to the 3D printing unit 3, and the 3D printing unit 3 prints out a solid model of the patient's acetabulum. After the patient's scanning is completed, the first linear slide rail 16 operates again to move the patient to the initial position. At this time, the patient can be quickly transferred from the device with the help of the lifting component again.

[0060] The present invention covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of the present invention. For the public to have a thorough understanding of the present invention, specific details are described in detail in the preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. Additionally, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0061] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A combined reconstruction device for acetabular bone defects, comprising a frame, characterized in that, One end of the frame is equipped with a scanning unit for scanning the acetabular bone of a patient. The other end of the frame is equipped with a 3D printing unit for physically printing the patient's acetabular bone model obtained by scanning of the scanning unit. The bottom of the frame is fixedly connected with a second linear slide rail, and the top of the second linear slide rail is fixedly connected with a hydraulic cylinder. The top of the frame is fixedly connected with a first linear slide rail, and the top of the first linear slide rail is fixedly connected with a trolley board. A lifting assembly for lifting the patient to a height level with the trolley board. The lifting assembly has two states: before lifting and after lifting. Before lifting, the lifting assembly is connected to the hydraulic cylinder, and after lifting, the lifting assembly is respectively connected to the hydraulic cylinder and the trolley board. A support assembly that not only supports the patient's waist but also cooperates to lock the lifting assembly. The support assembly is respectively connected to the trolley board and the lifting assembly after lifting.

2. The combined reconstruction device for acetabular bone defect according to claim 1, characterized in that, The lifting assembly includes a base tray fixedly connected to the output end of the hydraulic cylinder. A sliding seat plate is slidably connected inside the base tray, and a rotating seat plate is rotatably connected inside the sliding seat plate. A seat plate positioning groove adapted to the shape of the sliding seat plate is formed on the trolley board. The rotating seat plate can slide together with the sliding seat plate into the seat plate positioning groove, and the support assembly is connected to the rotating seat plate after it slides into the seat plate positioning groove.

3. The combined reconstruction device for acetabular bone defect according to claim 2, characterized in that, Limit blocks are fixedly connected to both side walls of the sliding seat plate, and limit plates adapted to the shape of the limit blocks are symmetrically installed on both inner walls of the base tray and both inner walls of the seat plate positioning groove.

4. The combined reconstruction device for acetabular bone defect according to claim 2, wherein Limit balls are provided at the bottom of the rotating seat plate and the top of the sliding seat plate. The middle position of the top of the rotating seat plate is an inwardly concave arc-shaped structure, and anti-slip lines are provided at the edge position of the top of the rotating seat plate.

5. The combined reconstruction device for acetabular bone defect according to claim 2, wherein A side plate is fixedly connected to one end of the base tray close to the trolley board. A protruding portion is fixedly connected to the bottom outer wall of the trolley board on the side close to the base tray. A recessed portion adapted to the shape of the protruding portion is formed at the top of the side plate, and a weakening groove is formed at the connection position between the side plate and the bottom tray.

6. The combined reconstruction device for acetabular bone defect according to claim 5, wherein, Positioning inserts are fixedly connected to one side of the side plate close to the sliding seat plate and the inner wall of the seat plate positioning groove far from the base tray. A positioning slot adapted to the shape of the positioning insert is formed on the outer wall of the sliding seat plate close to the side plate.

7. The combined reconstruction device for acetabular bone defect according to claim 2, characterized in that, The support assembly includes a lumbar and back support plate fixedly connected to the upper surface of the trolley board and having a curved surface structure. Elastic sheets arranged linearly are fixedly connected to the upper surface of the trolley board. One end of each elastic sheet is fixedly connected to an arc-shaped support plate, and a Y-shaped pressing plate is fixedly connected to the inner wall of the lumbar and back support plate.

8. The combined reconstruction device for acetabular bone defect according to claim 7, wherein, The number of both the elastic sheets and the arc-shaped support plates is four groups, and the outer wall of the arc-shaped support plate abuts against the inner wall of the lumbar and back support plate.

9. The combined reconstruction device for acetabular bone defect according to claim 7, characterized in that, A first arc-shaped plate is fixedly connected to the middle position of the Y-shaped pressing plate. A second arc-shaped plate is fixedly connected to one end of the Y-shaped pressing plate. A first guiding plate located at the bottom of the second arc-shaped plate is fixedly connected to the upper surface of the cross plate. A second guiding plate located at the bottom of the second arc-shaped plate is fixedly connected to the upper surface of the cross plate.

10. The combined reconstruction device for acetabular bone defect according to claim 9, wherein, A locking plug is fixedly connected to the end of the Y-shaped pressing plate away from the second arc-shaped plate. A locking slot adapted to the shape of the locking plug is formed in the outer wall of the rotating seat plate.

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