Intraosseous expansion filling type net-shaped fixing device

Abstract

The invention provides an intraosseous expansion filling type net-shaped fixing device, and belongs to the field of medical instruments. Comprising a bottom plate, the top of the bottom plate is fixedly connected with a fixing rod, the outer wall of the fixing rod is slidably connected with a moving plate, and an intraosseous filling net is installed between the bottom plate and the moving plate; and the number of the auxiliary supporting mechanisms is two, and the two auxiliary supporting mechanisms are arranged on the inner side of the bottom plate and the inner side of the movable plate correspondingly and located on the top of the bottom plate and the bottom of the movable plate. By means of the auxiliary supporting mechanism, the contact area of the intraosseous filling net and the bone is increased, then the stability of the internal structure of the bone is enhanced, and when the bone is subjected to external force, an expansion structure of the intraosseous filling net can effectively disperse pressure, avoid stress concentration and protect the bone from being damaged due to the fact that convex-concave different shapes exist in the bone.

Description

Technical Field

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

[0002] The intraosseous expansion filling mesh fixation device generally consists of a mesh tube structure, a press-fit structure, an absorbable flexible structure, etc. The mesh tube structure is its main part, which is usually made of one or more biocompatible materials, such as polyethylene terephthalate, etc. 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 has 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 prior art, when filling the bone, it cannot completely fit the bone surface, causing the intrabone expansion and filling mesh fixation device to be arched 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 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 that the bone expansion filling mesh fixation device in the prior art takes on an arch shape when filled in the bone, resulting in the front and rear ends of the arch being unable to provide effective support, thereby reducing the stability of the fixation device and reducing the supporting effect of the fixation device, the object of the present invention is to provide an bone expansion filling mesh fixation device.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A bone expansion filling mesh fixing device comprises 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 moving plate, and an bone filling mesh is installed between the base plate and the moving plate; an auxiliary supporting mechanism, two of the auxiliary supporting mechanisms are provided, and the two auxiliary supporting mechanisms are respectively arranged on the inner sides of the base plate and the moving plate, located at the top of the base plate and the bottom of the moving 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 base plate and the moving plate, and used to drive the two auxiliary supporting 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 support plates are internally fixed with a protrusion, the protrusion is slidably connected to a 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 sliding blocks 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, the inside of the movable sleeve is provided with sliding grooves corresponding to the two sliding blocks, the movable sleeve is linearly slidably connected to the fixed sleeve on the sliding block through the sliding grooves, the fixed sleeve is rotatably connected to the fixed rod, 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 toggle the support plate to move.

[0009] Optionally, the moving mechanism also includes a limiting groove opened inside the moving plate, the inside of the limiting groove is 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 meshes 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, two second springs are fixedly connected to the two ends of the rebound groove, two movable seats are slidably connected inside the rebound groove, 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 via a connecting component, and the two support plates two are rotatably connected via 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 portion 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 scheme, through the auxiliary support mechanism, when the trapezoidal block rotates, the inclined surface on the trapezoidal block abuts against the spherical rod, and under the action of the trapezoidal block, the spherical rod is pushed to drive the multiple support plates on the bottom plate and the movable plate to expand outward, and at the same time, the bone filling net is abutted and pushed to expand, thereby increasing the contact area between the bone filling net and the bone, thereby enhancing the stability of the internal structure of the bone. When the bone is subjected to external force, the expansion structure of the bone filling net can effectively disperse the pressure, avoid stress concentration, and protect the bone from damage, because there are uneven shapes in the bone;

[0016] Through the coordination of the spherical rod and other parts, when the support plate and the inner surface of the bone reach the maximum limit, the trapezoidal block continues to rotate to push the spherical rod to move inside the convex block and squeeze the first spring, so that each support plate has a certain range of adaptation, and the bone filling net is more closely attached to the inner surface of the patient's bone, so that the bone filling net can be more closely attached to various convex and concave surfaces in the patient's bone. This close 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 component, the support plate 2 can extend from the mesh gap of the bone filling net. When the support plates 1 and 2 fit the inner surface of the patient's bone, the support plates 1 and 2 can automatically and adaptively rotate when encountering resistance. The automatic adaptive rotation of the support plates 1 and 2 enables them to better fit the complex shape of the inner surface of the patient's bone. This fitting 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 the automatic adaptive rotation, the support plates 1 and 2 can provide support points at more locations, which help to disperse the external force on the bone, thereby enhancing the stability of the internal structure of the bone. 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 those skilled in the relevant 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 B;

[0027] Fig. 9 It is an axial view of the support plate of the present invention;

[0028] Fig.10 It is an axial view of the fitting support member of the present invention;

[0029] Fig.11 For the present invention Fig.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 in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0034] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0035] In general, a term can be understood, at least in part, from its 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” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0037] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown 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 may 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 moving plate 3, and an intrabone filling mesh 2 is installed between the base plate 1 and the moving plate 3; an auxiliary supporting mechanism, two of the auxiliary supporting mechanisms are provided, and the two auxiliary supporting mechanisms are respectively arranged on the inner sides of the base plate 1 and the moving plate 3, located at the top of the base plate 1 and the bottom of the moving 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 supporting mechanisms to operate synchronously. The auxiliary supporting mechanism includes a plurality of supporting plates 7 respectively installed in a circular array on the top of the base plate 1 and the bottom of the moving plate 3. The plurality of supporting plates 7 are slidably connected to the moving plate 3. The plurality of supporting plates 7 can slide toward the outside of the moving plate 3 when in use. The plurality of supporting plates 7 are arranged in a Z-shape and staggered in a ring shape. The inside of the support plate 7 is fixedly connected to a protrusion 25, and the protrusion 25 is slidably connected to a 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 sliding blocks 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 a movable sleeve 6, and the inside of the movable sleeve 6 is provided with a connection with two The movable sleeve 6 is linearly slidably connected to the fixed sleeve 5 on the slider 15 through the slide groove. 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 moving mechanism also includes a limiting groove 24 provided inside the movable plate 3. The inside of the limiting groove 24 is rotatably connected to a worm 9. A slot is provided at one end of the worm 9. The top of the movable sleeve 6 is fixedly connected to a worm gear 8. 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 distributed in a circular array on the outside of the movable sleeve 6, and the trapezoidal blocks 10 are distributed in a circular array on the outside of the fixed sleeve 5.

[0040] When the medical staff needs to put the device into the patient's bone, the bottom plate 1 is pressed against the innermost end of the patient's bone, and then the movable plate 3 is pushed to slide on the fixed rod 4, so that the bone filling mesh 2 is expanded 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, 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 characteristic, that is, when the worm 9 stops rotating, the worm wheel 8 will be difficult to be driven. This characteristic provides stability and limiting effects 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 bottom plate 1 and the movable plate 3 to expand outward, and at the same time, the bone filling mesh 2 is abutted and pushed to expand, thereby increasing the contact area between the bone 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 expansion structure of the bone 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 inside the protrusion 25 and squeeze the first spring 11, so that each support plate 7 has a certain adaptation range, thereby making the bone filling mesh 2 more fit to the inner surface of the patient's bone, so that the bone filling mesh 2 can fit more closely on various convex and concave surfaces in 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.

[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 two second springs 19 are fixedly connected to the two ends of the rebound groove 18. Two movable seats 13 are slidably connected inside the rebound groove 18, and one side of the two movable seats 13 is fixedly connected to one end of the second spring 19. The inner sides of the two movable seats 13 are rotatably connected to a connecting rod 14, and the connecting rod 14 is fixedly connected to the support plate 16, and 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, and 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 bottom protruding part 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, and a torsion spring 22 is installed at the bottom of the fixed plate 21 and the support plate 17, the outer walls on both sides of the movable seat 13 are fixedly connected to the limit blocks, and the inner side of the support plate 7 is provided with a guide groove matching the limit block, and the guide groove is communicated with the rebound groove 18.

[0044] The support plate 17 is initially arranged in the middle of the mesh gap of the intrabone filling net 2, and when the support plate 7 expands outward, the support plate 17 can extend from the mesh gap of the intrabone filling net 2, and when the multiple shaft rods 23 touch the inner surface of the patient's bone, at the same time, because the movement encounters resistance, the support plate 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 the support plates 16 and 17 fitting the inner surface of the patient's bone, the support plates 16 and 17 can automatically and adaptively rotate when encountering resistance. The automatic adaptive rotation of the support plates 16 and 17 enables them to better fit the complex shape of the inner surface of the patient's bone. 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 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 17 rotates at the bottom of the support plate 16, when the shaft 20 rotates, the torsion spring 22 works, and then each support plate 16 and support plate 17 slowly expand outward according to the shape of the patient's bone inner surface and slowly fit on the bone inner surface, until the support plate 16 and support plate 17 are completely fitted with the bone inner surface, and the contact of the shaft 23 with the bone inner surface prompts the support plate 16 and support plate 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 17 with the bone inner surface, thereby improving the fitting effect of the device with 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 the medical staff needs to put the device into the patient's bone, they press the bottom 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 and 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 characteristic, 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. Under the action of the trapezoidal block 10, the spherical rod 12 is pushed to drive the multiple support plates 7 on the bottom plate 1 and the movable plate 3 to expand outward, and at the same time, the bone filling mesh 2 is abutted and pushed to expand, thereby increasing the contact area between the bone 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 expansion structure of the bone 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 inside the protrusion 25 and squeeze the first spring 11, so that the bone filling mesh 2 fits better to the inner surface of the patient's bone, so that the bone filling mesh 2 can fit more closely to various convex and concave surfaces in 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.

[0050] The support plate 17 is initially arranged in the middle of the mesh gap of the intrabone filling net 2, and when the support plate 7 expands outward, the support plate 17 can extend from the mesh gap of the intrabone filling net 2, and when the multiple shaft rods 23 touch the inner surface of the patient's bone, at the same time, because the movement encounters resistance, the support plate 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 the support plates 16 and 17 fitting the inner surface of the patient's bone, the support plates 16 and 17 can automatically and adaptively rotate when encountering resistance. The automatic adaptive rotation of the support plates 16 and 17 enables them to better fit the complex shape of the inner surface of the patient's bone.

[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, when the shaft rod 1 20 rotates, the torsion spring 22 works, and then each support plate 1 16 and the support plate 2 17 are adjusted according to the patient's position. 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 are completely fitted against the inner surface of the bone. The contact between shaft rod 23 and the inner surface of the bone causes 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 moving 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 covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not 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 principle of the present invention. These improvements and modifications should also be regarded as 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, an outer wall of which is slidably connected to a movable plate, and an intraosseous 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; The moving mechanism is located on the inner sides of the bottom plate and the moving plate and is used to drive the two auxiliary supporting mechanisms to operate synchronously.

2. The intraosseous expansion-filling mesh fixation device according to claim 1, characterized in that: 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 support plates are internally fixed with a protrusion, the protrusion is slidably connected to a 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.

3. The intraosseous expansion-filling mesh fixation device according to claim 2, characterized in that: The moving mechanism includes a fixed sleeve fixedly connected to the bottom of the fixed rod, two sliding blocks fixedly connected to the outer wall near the top of the fixed sleeve, the outside of the fixed sleeve is slidably connected to the movable sleeve, the inside of the movable sleeve is provided with sliding grooves corresponding to the two sliding blocks, the movable sleeve is linearly slidably connected to the fixed sleeve on the sliding block through the sliding grooves, the fixed sleeve is rotatably connected to the fixed rod, 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.

4. The intraosseous expansion-filling mesh fixation device according to claim 3, characterized in that: The moving mechanism also includes a limiting groove opened inside the moving plate, the inside of the limiting groove is 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 meshes with the worm wheel.

5. The intraosseous expansion-filling mesh fixation device according to claim 4, characterized in that: 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.

6. The intraosseous expansion-filling mesh fixation device according to claim 5, characterized in that: The fitting support component includes two rebound grooves opened on the outside of the support plate, and two moving seats are slidably connected inside the rebound grooves. One side of the two moving seats is fixedly connected with a second spring, and the inner sides of the two moving seats are rotatably connected with 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.

7. The intraosseous expansion-filling mesh fixation device according to claim 6, characterized in that: Two second springs are fixedly connected to the two ends of the rebound groove.

8. The intraosseous expansion-filling mesh fixation device according to claim 6, characterized in that: A shaft rod 2 is arranged between the two support plates 2 and the two support plates are rotatably connected via the shaft rod 2.

9. The intraosseous expansion-filling mesh fixation device according to claim 6, characterized in that: The connecting component includes an axis rod 1 rotatably connected to the bottom of the second support plate, one end of the axis rod 1 passes through the protruding part of the bottom of the second support plate and is fixedly connected to the first support plate, 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 second support plate.

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

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