Intraosseous expansion-filling mesh fixation device

Abstract

The present invention provides an intrabone expansion filling mesh fixing device, which belongs to the field of medical devices. It comprises: a base plate, the top of the base plate is fixedly connected to a fixed rod, the outer wall of the fixed rod is slidably connected to a movable plate, and an intrabone filling mesh is installed between the base plate and the movable plate; an auxiliary support mechanism, two of the auxiliary support mechanisms are provided, and the two auxiliary support mechanisms are respectively provided on the inner side of the base plate and the movable plate, located at the top of the base plate and the bottom of the movable plate. The present invention increases the contact area between the intrabone filling mesh and the bone through the auxiliary support mechanism, thereby enhancing the stability of the internal structure of the bone. When the bone is subjected to external force, the expansion structure of the intrabone filling mesh can effectively disperse the pressure, avoid stress concentration, and protect the bone from damage, because the bone has uneven shapes.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more particularly to an intrabone expansion-filling mesh fixing device. Background Art

[0002] Intraosseous expansion and filling mesh fixation devices generally consist of a mesh tube structure, a press-fit structure, and an absorbable flexible structure. The mesh tube structure is the main component and is usually made of one or more biocompatible materials, such as polyethylene terephthalate. This material has good flexibility and strength, can adapt to the shape of the bone defect area, and provide necessary support.

[0003] After a patient suffers a fracture, an intrabone expansion and filling mesh fixation device is used to expand and fill the bone. Because each person's bone structure is different, medical staff will partially resect the fracture site. However, in the existing technology, when filling the bone, it cannot completely fit with the inner surface of the bone, causing the intrabone expansion and filling mesh fixation device to take an arched shape when filled in the bone. As a result, the front and tail ends of the arch cannot provide effective support, which will reduce the support effect of the fixation device and thus affect the healing effect of the fracture. Summary of the Invention

[0004] In view of the problem in the prior art that the intrabone expansion-filling mesh fixation device forms an arch shape when filled in the bone, resulting in the front and rear ends of the arch being unable to provide effective support, which will reduce the stability of the fixation device and reduce the supporting effect of the fixation device, the purpose of the present invention is to provide an intrabone expansion-filling mesh fixation device.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A bone expansion filling mesh fixation device includes a base plate, the top of the base plate is fixedly connected to a fixing rod, the outer wall of the fixing rod is slidably connected to a movable plate, and an bone filling mesh is installed between the base plate and the movable plate; an auxiliary support mechanism, two of the auxiliary support mechanisms are provided, and the two auxiliary support mechanisms are respectively arranged on the inner sides of the base plate and the movable plate, located at the top of the base plate and the bottom of the movable plate, to further fix and support the bone so that the device can better fit the shape of the bone; a movable mechanism is located on the inner sides of the base plate and the movable plate, and is used to drive the two auxiliary support mechanisms to operate synchronously.

[0007] Optionally, the auxiliary support mechanism includes a plurality of support plates respectively installed in a circular array on the top of the base plate and the bottom of the movable plate, the internal fixed connection protrusions of the support plates are slidably connected to the spherical rod, the spherical rod and the protrusion are connected by a first spring, and the end of each support plate is provided with a fitting support component for fitting support.

[0008] Optionally, the moving mechanism includes a fixed sleeve fixedly connected to the bottom of the fixed rod, two sliders fixedly connected to the outer wall near the top of the fixed sleeve, the outside of the fixed sleeve is slidably connected to a movable sleeve, and the inside of the movable sleeve is provided with a sliding groove corresponding to the two sliders. The movable sleeve is linearly slidably connected to the fixed sleeve on the slider through the sliding groove, the fixed sleeve is rotatably connected to the fixed rod, and the movable sleeve is rotatably connected to the movable plate, and the fixed sleeve and the movable sleeve are both provided with a toggle assembly for toggling the support plate to move.

[0009] Optionally, the moving mechanism further includes a limiting groove provided inside the movable plate, the limiting groove is internally rotatably connected to a worm, one end of the worm is provided with a slot, the top of the movable sleeve is fixedly connected to a worm wheel, and the worm engages with the worm wheel.

[0010] Optionally, the toggle assembly includes a plurality of trapezoidal blocks fixedly connected to the outer wall of the movable sleeve, and the trapezoidal blocks are distributed in a circular array outside the movable sleeve, and the trapezoidal blocks are distributed in a circular array outside the fixed sleeve.

[0011] Optionally, the fitting support component includes two rebound grooves opened on the outside of the support plate, the two ends of the rebound groove are fixedly connected to two second springs, the inside of the rebound groove is slidably connected to two movable seats, one side of the two movable seats is fixedly connected to one end of the second spring, and the inner sides of the two movable seats are rotatably connected to a connecting rod, the connecting rod is fixedly connected to support plate one, the bottom of support plate one is connected to support plate two through a connecting component, and the two support plates two are rotatably connected through shaft rod two.

[0012] Optionally, the connecting component includes an axis rod 1 rotatably connected to the bottom of the support plate 2, one end of the axis rod 1 passes through the protruding part of the bottom of the support plate 2 and is fixedly connected to the support plate 1, one end of the axis rod 1 is fixedly connected to a fixed plate, and a torsion spring is installed between the fixed plate and the bottom of the support plate 2.

[0013] Optionally, the outer walls on both sides of the movable seat are fixedly connected to limit blocks, the inner side of the support plate is provided with a guide groove matching the limit blocks, and the guide groove is communicated with the rebound groove.

[0014] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0015] In the above solution, through the auxiliary support mechanism, when the trapezoidal block rotates, the inclined surface on the trapezoidal block abuts against the spherical rod. Under the action of the trapezoidal block, the spherical rod drives the multiple support plates on the bottom plate and the movable plate to expand outward, and at the same time abuts against the intrabone filling mesh and pushes it to expand, thereby increasing the contact area between the intrabone filling mesh and the bone, thereby enhancing the stability of the internal structure of the bone. When the bone is subjected to external force, the expanded structure of the intrabone filling mesh can effectively disperse the pressure, avoid stress concentration, and protect the bone from damage because the bone has an uneven shape.

[0016] Through the coordination of the spherical rod and other parts, when the support plate and the inner surface of the bone reach their maximum limit, the trapezoidal block continues to rotate, pushing the spherical rod into the inside of the protrusion and compressing the first spring, so that each support plate has a certain range of adaptability, thereby making the bone filling mesh fit more closely to the inner surface of the patient's bone, allowing the bone filling mesh to fit more tightly to the various convex and concave surfaces of the patient's bone. This tight fit not only improves the stability of the filler, but also helps to reduce the gap between the filler and the bone, thereby preventing the filler from loosening or shifting, thereby improving the applicability of the device;

[0017] By fitting the support components, support plate 2 can extend from the mesh gaps of the bone filling mesh. When support plates 1 and 2 fit the patient's bone inner surface, they can automatically and adaptively rotate when encountering resistance. The automatic adaptive rotation of support plates 1 and 2 enables them to better fit the complex shape of the patient's bone inner surface. This fit not only improves the stability of the filler, but also helps reduce the gap between the filler and the bone, thereby preventing the filler from loosening or shifting. At the same time, through automatic adaptive rotation, support plates 1 and 2 can provide support points in more locations. These support points help disperse external forces acting on the bone, thereby enhancing the stability of the bone's internal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 is a bottom axial view of the present invention;

[0021] Figure 3 is a side sectional view of the present invention;

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0023] Figure 5 It is a partial structural axial view of the present invention;

[0024] Figure 6 is a cross-sectional view of a movable plate of the present invention;

[0025] Figure 7 A view of the worm gear shaft of the present invention;

[0026] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at point B;

[0027] Figure 9 This is an axial view of the support plate of the present invention;

[0028] Figure 10 This is an axial view of the laminating support member of the present invention;

[0029] Figure 11 For the present invention Figure 10 Enlarged structural diagram at C.

[0030] [Reference Signs]

[0031] 1. Base plate; 2. Intrabone filling mesh; 3. Moving plate; 4. Fixed rod; 5. Fixed sleeve; 6. Movable sleeve; 7. Support plate; 8. Worm gear; 9. Worm; 10. Trapezoidal block; 11. First spring; 12. Spherical rod; 13. Moving seat; 14. Connecting rod; 15. Slider; 16. Support plate 1; 17. Support plate 2; 18. Rebound groove; 19. Second spring; 20. Shaft rod 1; 21. Fixed plate; 22. Torsion spring; 23. Shaft rod 2; 24. Limiting groove; 25. Bump.

[0032] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0033] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative methods for implementing certain known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0034] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0035] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0036] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0037] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0038] like Figures 1 to 11 As shown, an embodiment of the present invention provides an intrabone expansion filling mesh fixation device, comprising a base plate 1, the top of the base plate 1 is fixedly connected to a fixing rod 4, the outer wall of the fixing rod 4 is slidably connected to a movable plate 3, and an intrabone filling mesh 2 is installed between the base plate 1 and the movable plate 3; an auxiliary support mechanism, two of the auxiliary support mechanisms are provided, and the two auxiliary support mechanisms are respectively arranged on the inner sides of the base plate 1 and the movable plate 3, located at the top of the base plate 1 and the bottom of the movable plate 3, to further fix and support the bone, so that the device can better fit the shape of the bone.

[0039] The moving mechanism is located on the inner side of the base plate 1 and the moving plate 3, and is used to drive the two auxiliary support mechanisms to operate synchronously. The auxiliary support mechanism includes a plurality of support plates 7 installed in a circular array on the top of the base plate 1 and the bottom of the moving plate 3. The plurality of support plates 7 are slidably connected to the moving plate 3. The plurality of support plates 7 can slide toward the outside of the moving plate 3 when in use. The plurality of support plates 7 are staggered in a Z shape and are annular. The interior of the support plate 7 is fixedly connected to a protrusion 25, and the protrusion 25 is slidably connected to the spherical rod 12. The spherical rod 12 and the protrusion 25 are connected by a first spring 11. The moving mechanism includes a fixed sleeve 5 rotatably connected to the bottom of the fixed rod 4, and two sliders 15 are fixedly connected to the outer wall near the top of the fixed sleeve 5. The outside of the fixed sleeve 5 is slidably connected to the movable sleeve 6, and the interior of the movable sleeve 6 is provided with a protrusion 25 connected to the two The movable sleeve 6 is linearly slidably connected to the fixed sleeve 5 on the slider 15 through the slide groove, and the fixed sleeve 5 is rotatably connected to the fixed rod 4. The movable sleeve 6 is rotatably connected to the inner side of the movable plate 3. The fixed sleeve 5 and the movable sleeve 6 are both provided with a toggle assembly for toggling the support plate 7 to move. The movable mechanism also includes a limiting groove 24 provided inside the movable plate 3, and the internal rotation connection of the limiting groove 24 is connected to the worm 9. A slot is provided at one end of the worm 9. The top of the movable sleeve 6 is fixedly connected to the worm gear 8, and the worm 9 engages with the worm gear 8. The toggle assembly includes a plurality of trapezoidal blocks 10 fixedly connected to the outer wall of the movable sleeve 6, and the trapezoidal blocks 10 are circumferentially arrayed on the outside of the movable sleeve 6, and the trapezoidal blocks 10 are circumferentially arrayed on the outside of the fixed sleeve 5.

[0040] When medical staff need to place the device into the patient's bone, they press the base plate 1 against the innermost end of the patient's bone, and then push the movable plate 3 to slide on the fixed rod 4, so that the bone filling mesh 2 expands in the patient's bone. While the movable plate 3 is pushed, the movable sleeve 6 is driven to slide outside the fixed sleeve 5, and the slider 15 on the fixed sleeve 5 moves in the slide groove inside the movable sleeve 6 to limit the sliding of the movable sleeve 6, so that the bone filling mesh 2 can be correctly and stably deployed in the patient's bone.

[0041] When the bone filling mesh 2 is fully unfolded, the medical staff takes out a cross screwdriver and inserts it into the slot at one end of the worm 9 and then rotates it. The worm 9 rotates inside the limiting groove 24 and drives the worm wheel 8 to rotate. At this time, the worm wheel 8 drives the movable sleeve 6 and the fixed sleeve 5 to rotate on the fixed rod 4 at the same time, driving the movable sleeve 6 and the fixed sleeve 5 to rotate while driving the trapezoidal block 10 to rotate. The cooperation between the worm 9 and the worm wheel 8 can limit the fixed sleeve 5 and the movable sleeve 6, and at the same time limit the rotation angle of the trapezoidal block 10. The cooperation between the worm 9 and the worm wheel 8 has a self-locking feature, that is, when the worm 9 stops rotating, the worm wheel 8 will be difficult to drive. This feature provides stability and limiting effect for the fixed sleeve 5, the movable sleeve 6 and the trapezoidal block 10.

[0042] When the trapezoidal block 10 rotates, the inclined surface on the trapezoidal block 10 abuts against the spherical rod 12. Under the action of the trapezoidal block 10, the spherical rod 12 is pushed to drive the multiple support plates 7 on the base plate 1 and the movable plate 3 to expand outward, and at the same time abuts against the intrabone filling mesh 2 and pushes it to expand, thereby increasing the contact area between the intrabone filling mesh 2 and the bone, thereby enhancing the stability of the internal structure of the bone. When the bone is subjected to external force, the expanded structure of the intrabone filling mesh 2 can effectively disperse the pressure, avoid stress concentration, and protect the bone from damage. Because the bone has an uneven shape, when the support plate 7 and the inner surface of the bone reach the maximum limit, the trapezoidal block 10 continues to rotate, pushing the spherical rod 12 to move toward the inside of the protrusion 25 and squeezing the first spring 11, so that each support plate 7 has a certain adaptation range, thereby making the intrabone filling mesh 2 fit more closely to the patient's bone inner surface, so that the intrabone filling mesh 2 can fit more closely to the various convex and concave surfaces in the patient's bone. This tight fit not only improves the stability of the filler, but also helps reduce the gap between the filler and the bone, thereby preventing the filler from loosening or shifting, thereby improving the applicability of the device.

[0043] like Figures 9 to 11As shown, each end of the support plate 7 is provided with a fitting support component for fitting support, and the fitting support component includes two rebound grooves 18 opened on the outside of the support plate 7, and the two ends of the rebound groove 18 are fixedly connected to two second springs 19. The inside of the rebound groove 18 is slidably connected to two moving seats 13, and one side of the two moving seats 13 is fixedly connected to one end of the second spring 19. The inner sides of the two moving seats 13 are rotatably connected to a connecting rod 14, and the connecting rod 14 is fixedly connected to the support plate 16. The bottom of the support plate 16 is connected to the support plate 2 17 through a connecting component. The two support plates 17 are rotatably connected by an axle rod 23. The connecting component includes an axle rod 20 rotatably connected to the bottom of the support plate 17. One end of the axle rod 20 passes through the protruding part of the bottom of the support plate 17 and is fixedly connected to the support plate 16. One end of the axle rod 20 is fixedly connected to a fixed plate 21. A torsion spring 22 is installed on the fixed plate 21 and the bottom of the support plate 17. The outer walls on both sides of the movable seat 13 are fixedly connected to the limit blocks. A guide groove matching the limit block is provided on the inner side of the support plate 7, and the guide groove is communicated with the rebound groove 18.

[0044] The support plate 2 17 is initially arranged in the middle of the mesh gap of the intrabone filling net 2. When the support plate 7 expands outward, the support plate 2 17 can extend from the mesh gap of the intrabone filling net 2. When the multiple shaft rods 23 touch the patient's bone inner surface, at the same time, because the movement encounters resistance, the support plate 2 17 is pushed first, and then the moving seat 13 is pushed. At this time, the moving seat 13 slides inside the rebound groove 18 to squeeze the second springs 19 on both sides. In the process of support plates 1 16 and 2 17 fitting the patient's bone inner surface, support plates 1 16 and 2 17 can automatically and adaptively rotate when encountering resistance. The automatic adaptive rotation of support plates 16 and 2 17 enables them to better fit the complex shape of the patient's bone inner surface. This fit not only improves the stability of the filler, but also helps to reduce the gap between the filler and the bone, thereby preventing the filler from loosening or shifting. At the same time, through automatic adaptive rotation, support plate 1 16 and support plate 2 17 can provide support points in more positions. These support points help to disperse the external force exerted on the bone, thereby enhancing the stability of the internal structure of the bone.

[0045] Since the shaft 20 at the bottom of the support plate 2 17 rotates at the bottom of the support plate 16, the torsion spring 22 works when the shaft 20 rotates, and then each support plate 16 and support plate 2 17 slowly expands outward according to the shape of the patient's bone inner surface and slowly fits on the bone inner surface, until the support plate 16 and support plate 2 17 are completely fitted with the bone inner surface, and the contact of the shaft 2 23 with the bone inner surface prompts the support plate 16 and support plate 2 17 to fit according to the shape of the bone inner surface. This fitting is gradual and is achieved by the sliding of the moving seat 13 in the rebound groove 18 and the squeezing of the second spring 19, ensuring the precise matching of the support plate 16 and support plate 2 17 with the bone inner surface, thereby improving the fitting effect between the device and the patient's bone cavity, thereby further improving the effectiveness of treatment.

[0046] The workflow of the technical solution of the present invention is as follows:

[0047] When medical staff need to place the device into the patient's bone, they press the base plate 1 against the innermost end of the patient's bone, and then push the movable plate 3 to slide on the fixed rod 4, so that the bone filling mesh 2 expands in the patient's bone. While the movable plate 3 is pushed, the movable sleeve 6 is driven to slide outside the fixed sleeve 5, and the slider 15 on the fixed sleeve 5 moves in the slide groove inside the movable sleeve 6 to limit the sliding of the movable sleeve 6.

[0048] When the bone filling mesh 2 is fully unfolded, the medical staff takes out a cross screwdriver or inserts it into the slot at one end of the worm 9 and then rotates it. The worm 9 rotates inside the limiting groove 24 and drives the worm wheel 8 to rotate. At this time, the worm wheel 8 drives the movable sleeve 6 and the fixed sleeve 5 to rotate on the fixed rod 4 at the same time, driving the movable sleeve 6 and the fixed sleeve 5 to rotate while driving the trapezoidal block 10 to rotate. The cooperation between the worm 9 and the worm wheel 8 can limit the fixed sleeve 5 and the movable sleeve 6, and at the same time limit the rotation angle of the trapezoidal block 10. The cooperation between the worm 9 and the worm wheel 8 has a self-locking feature, that is, when the worm 9 stops rotating, the worm wheel 8 will be difficult to drive.

[0049] When the trapezoidal block 10 rotates, the inclined surface on the trapezoidal block 10 abuts against the spherical rod 12, and under the action of the trapezoidal block 10, the spherical rod 12 is pushed to drive the multiple support plates 7 on the base plate 1 and the movable plate 3 to expand outward, while abutting against the intrabone filling mesh 2 and pushing it to expand, thereby increasing the contact area between the intrabone filling mesh 2 and the bone, thereby enhancing the stability of the internal structure of the bone. When the bone is subjected to external force, the expanded structure of the intrabone filling mesh 2 can effectively disperse the pressure, avoid stress concentration, and protect the bone from damage. Because there are uneven shapes in the bone, when the support plate 7 and the inner surface of the bone reach the maximum limit, the trapezoidal block 10 continues to rotate and pushes the spherical rod 12 to move toward the inside of the protrusion 25 and squeeze the first spring 11, so that the intrabone filling mesh 2 fits better to the inner surface of the patient's bone, so that the intrabone filling mesh 2 can fit more closely to the various convex and concave surfaces in the patient's bone. This tight fit not only improves the stability of the filler, but also helps reduce the gap between the filler and the bone, thereby preventing the filler from loosening or shifting, thereby improving the applicability of the device.

[0050] The support plate 2 17 is initially arranged in the middle of the mesh gap of the intrabone filling net 2. When the support plate 7 expands outward, the support plate 2 17 can extend from the mesh gap of the intrabone filling net 2. When the multiple shaft rods 23 touch the patient's bone inner surface, at the same time, because the movement encounters resistance, the support plate 2 17 is pushed first, and then the moving seat 13 is pushed. At this time, the moving seat 13 slides inside the rebound groove 18 to squeeze the second springs 19 on both sides. In the process of support plates 1 16 and 2 17 fitting the patient's bone inner surface, support plates 1 16 and 2 17 can automatically and adaptively rotate when encountering resistance. The automatic adaptive rotation of support plates 16 and 2 17 enables them to better fit the complex shape of the patient's bone inner surface.

[0051] This fit not only improves the stability of the filler, but also helps to reduce the gap between the filler and the bone, thereby preventing the filler from loosening or shifting. At the same time, through automatic adaptive rotation, the support plate 16 and the support plate 2 17 can provide support points at more positions. These support points help to disperse the external force on the bone, thereby enhancing the stability of the internal structure of the bone. Since the shaft rod 1 20 at the bottom of the support plate 2 17 rotates at the bottom of the support plate 1 16, the torsion spring 22 works when the shaft rod 1 20 rotates, and then each support plate 1 16 and the support plate 2 17 are adjusted according to the patient's needs. The shape of the inner surface of the bone slowly expands outward and slowly fits against the inner surface of the bone until support plate 16 and support plate 2 17 completely fit against the inner surface of the bone. The contact between shaft 2 23 and the inner surface of the bone prompts support plate 16 and support plate 2 17 to fit according to the shape of the inner surface of the bone. This fitting is gradual and is achieved by the sliding of the movable seat 13 in the rebound groove 18 and the squeezing of the second spring 19, ensuring that support plate 16 and support plate 2 17 are accurately matched with the inner surface of the bone, thereby improving the fit between the device and the patient's bone cavity, thereby further improving the effectiveness of treatment.

[0052] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An intrabone expansion-filling mesh fixation device, characterized in that: include: A bottom plate, the top of which is fixedly connected to a fixed rod, the outer wall of which is slidably connected to a movable plate, and an intrabone filling mesh is installed between the bottom plate and the movable plate; Auxiliary support mechanisms, two of which are provided, and the two auxiliary support mechanisms are respectively provided on the inner sides of the bottom plate and the movable plate, located at the top of the bottom plate and the bottom of the movable plate, to further fix and support the bone so that the device can better fit the shape of the bone; A moving mechanism, located on the inner sides of the bottom plate and the moving plate, for driving the two auxiliary supporting mechanisms to operate synchronously; The auxiliary support mechanism includes a plurality of support plates respectively mounted in a circumferential array on the top of the base plate and the bottom of the movable plate, wherein the support plates are fixedly connected to protrusions inside, the protrusions are slidably connected to spherical rods, and the spherical rods are connected to the protrusions via a first spring, and each end of the support plates is provided with a fitting support component for fitting support; The movable mechanism includes a fixed sleeve fixedly connected to the bottom of the fixed rod, two sliders are fixedly connected to the outer wall near the top of the fixed sleeve, the outer portion of the fixed sleeve is slidably connected to the movable sleeve, and the interior of the movable sleeve is provided with a sliding groove corresponding to the two sliders. The movable sleeve is linearly slidably connected to the fixed sleeve on the slider through the sliding groove, the fixed sleeve is rotatably connected to the fixed rod, and the movable sleeve is rotatably connected to the movable plate, and the fixed sleeve and the movable sleeve are both provided with a toggle assembly for toggling the support plate to move; The moving mechanism further includes a limiting groove provided inside the moving plate, wherein a worm is rotatably connected to the inside of the limiting groove, a slot is provided at one end of the worm, the top of the movable sleeve is fixedly connected to a worm wheel, and the worm is engaged with the worm wheel; The toggle assembly includes a plurality of trapezoidal blocks fixedly connected to the outer wall of the movable sleeve and the outside of the fixed sleeve, and the trapezoidal blocks are distributed in a circular array outside the movable sleeve and the trapezoidal blocks are distributed in a circular array outside the fixed sleeve.

2. The intraosseous expandable and filling mesh fixation device according to claim 1, characterized in that: The fitting support component includes two rebound grooves opened on the outside of the support plate, and two movable seats are slidably connected inside the rebound grooves. One side of the two movable seats is fixedly connected to a second spring, and the inner sides of the two movable seats are rotatably connected to a connecting rod, which is fixedly connected to support plate one, and the bottom of support plate one is connected to support plate two through a connecting component.

3. The intraosseous expandable and filling mesh fixation device according to claim 2, characterized in that: Two ends of the rebound groove are fixedly connected to two second springs.

4. The intraosseous expandable and filling mesh fixation device according to claim 2, characterized in that: A second shaft rod is provided between the two support plates and the two support plates are rotatably connected via the second shaft rod.

5. The intraosseous expandable and filling mesh fixation device according to claim 2, characterized in that: The connecting component includes an axis rod 1 that is rotatably connected to the bottom of the support plate 2, one end of the axis rod 1 passes through the protruding part of the bottom of the support plate 2 and is fixedly connected to the support plate 1, and one end of the axis rod 1 is fixedly connected to a fixed plate, and a torsion spring is installed between the fixed plate and the bottom of the support plate 2.

6. The intraosseous expandable and filling mesh fixation device according to claim 2, characterized in that: The outer walls on both sides of the movable seat are fixedly connected with limiting blocks, and the inner side of the support plate is provided with a guiding groove matching the limiting blocks, and the guiding groove is communicated with the rebound groove.

Images