Time-regulated axial micro-motion bone fracture plate

Abstract

The invention provides a time-controlled axial micro-motion bone fracture plate, and belongs to the field of medical instruments. Comprising a main body unit and an adjusting unit, and the main body unit comprises a plurality of bone fracture plate main bodies; each adjusting unit comprises a rectangular block, rectangular grooves are formed in the middles of the multiple bone fracture plate bodies, the rectangular blocks are slidably connected to the inner walls of the rectangular grooves, the bone fracture plate bodies are in threaded connection with screws, the screws are inserted into the middles of the rectangular blocks in a threaded mode, and fixing pieces are fixedly connected to the upper ends of the rectangular blocks. The upper end of the fixing piece is fixedly connected with a degradation piece, a limiting groove matched with the fixing piece and the degradation piece is formed in the bone fracture plate body, the degradation piece serves as a time-varying switch, the time of axial micro-motion of the bone fracture plate body is adjusted and controlled by means of degradation time, and the micro-motion size of each nail hole can be adjusted at will. The optimal fracture healing mechanical environment can be achieved, stress transmission of long bones is facilitated, and stress shielding is reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more specifically to a time-regulated axial micro-motion bone fracture plate. Background Art

[0002] At present, the main treatments for FSF are conservative treatment and surgical treatment. Conservative treatment is mostly used for patients who are intolerant to surgery. It takes a long course of treatment and is prone to local complications of fractures such as malunion, lower limb dysfunction, and nonunion, as well as complications of long-term bed rest. Surgical treatment is divided into external fixation and internal fixation. Internal fixation treatment is mainly an open reduction and internal fixation procedure using intramedullary nails, bone plates, bridging combinations and other implants as fixation materials. Intramedullary nails have the advantages of minimally invasive, axial fixation, and the ability to achieve early postoperative functional training.

[0003] Currently, traditional bone plates are not easy to provide stable mechanical support in the early stage of fracture during use, and most of the bone plates only have one part that can micro-move, and it is not easy to provide sufficient micro-motion load between each nail hole, resulting in the bone plate being unable to better promote bone growth and unable to regulate the time of axial micro-motion of the bone plate. Summary of the invention

[0004] In view of the problem that most of the bone plates in the prior art have only one part that can micro-move, and it is not easy to provide sufficient micro-motion load between each nail hole, which results in the bone plate being unable to better promote bone growth and the inability to regulate the time of axial micro-motion of the bone plate, the purpose of the present invention is to provide a time-regulated axial micro-motion bone plate.

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

[0006] A time-regulated axial micro-motion bone plate comprises a main body unit and an adjustment unit, wherein the main body unit comprises a plurality of bone plate bodies; the adjustment unit comprises a rectangular block, wherein a rectangular groove is provided in the middle of each of the plurality of bone plate bodies, wherein the rectangular block is slidably connected to the inner wall of the rectangular groove, wherein a screw is threadedly connected to the bone plate body, wherein the screw thread is inserted in the middle of the rectangular block, wherein a fixing plate is fixedly connected to the upper end of the rectangular block, wherein a degradation plate is fixedly connected to the upper end of the fixing plate, wherein a limiting groove cooperating with the fixing plate and the degradation plate is provided on the bone plate body, and a limiting component is arranged on the bone plate body.

[0007] Optionally, a movable plate is slidably connected to the left side of the upper end of the degradation sheet, a connecting film is fixedly connected between the inner wall of the limiting groove and the movable plate, and the bottom end of the connecting film is in contact with the degradation sheet and the top inner wall of the limiting groove.

[0008] Optionally, a first-shaped slider is symmetrically fixedly connected to the left end of the movable plate, a baffle is symmetrically fixedly connected to the left side of the bone fracture plate body, a first-shaped slide groove that cooperates with the first-shaped slider is opened in the middle of the baffle, and the two baffles are respectively opposite to the top and bottom of the connecting membrane.

[0009] Optionally, the lower ends of the plurality of bone plate bodies are symmetrically fixedly connected with a second-shaped sliding block in a front-to-back manner, and the upper ends of the plurality of bone plate bodies are provided with a second-shaped sliding groove that cooperates with the second-shaped sliding block. The second-shaped sliding block is slidably connected in the second-shaped sliding groove, and one end of the second-shaped sliding groove is through-connected, while the other end of the second-shaped sliding groove is not through-connected.

[0010] Optionally, the limiting assembly includes a shaped rack plate, a cavity is opened in the middle of the bone plate body, the shaped rack plate is slidably connected to the inner wall of the cavity, the upper end of the shaped rack plate is symmetrically fixedly connected with a pin, the lower end of the second shaped slider is opened with a first slot that cooperates with the pin, the inner wall of the cavity is slidably connected with the shaped rack plate, the lower end of the shaped rack plate is fixedly connected with a plurality of plug blocks, the upper end of the movable plate is opened with a second slot that cooperates with the plug blocks, the inner wall of the cavity is rotatably connected with a connecting rod, the connecting rod passes through the bone plate body, the outer side of the connecting rod is fixedly connected with a gear, the gear is meshed with the L-shaped rack plate and the T-shaped rack plate, and the left end of the connecting rod is opened with a cross groove.

[0011] Optionally, a fixing block is fixedly connected to the inner wall of the cavity, the fixing block is made of rubber material, a circular hole is opened in the middle of the fixing block, the cross-sectional diameter of the connecting rod is larger than the cross-sectional diameter of the circular hole, the connecting rod is inserted in the circular hole, and a rubber sleeve is fixedly connected to the outer wall of the connecting rod inserted in the circular hole.

[0012] Optionally, a connecting block is fixedly connected to the upper end of the degradation sheet, the top of the connecting block is in contact with the top inner wall of the limiting groove, the material of the connecting block is the same as that of the degradation sheet, and a first spring is fixedly connected between the top wall of the limiting groove and the fixed sheet, the first spring is arranged in the middle of the connecting block, and the first spring is in a stretched state.

[0013] Optionally, a trapezoidal block is symmetrically and slidably connected to the middle part of the screw, one side wall of the trapezoidal block contacts a side wall of the rectangular block, a placement groove is symmetrically opened in the middle part of the screw, the trapezoidal block is slidably set in the placement groove, and a second spring is fixedly connected between the bottom wall of the placement groove and the trapezoidal block.

[0014] Optionally, the same connecting rope is fixedly connected between the two trapezoidal blocks, the left end of the connecting rope is fixedly connected to a pull rope, the left end of the pull rope is fixedly connected to a pull block, a circular groove is opened at the left end of the screw, and the pull block is placed in the circular groove.

[0015] Optionally, the bone plate body is provided with a through opening symmetrically on the left and right, the through opening is elliptical, and the screw is inserted in the middle of the through opening.

[0016] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0017] In the above scheme, the degradation sheet is used as a time-varying switch, and the degradation time is used to regulate the time of axial micro-motion of the bone plate body, and the size of the micro-motion of each nail hole can be adjusted arbitrarily, which can achieve the best mechanical environment for fracture healing, and is more conducive to stress transmission of long bones and reduces stress shielding;

[0018] When the speed needs to be adjusted for different patients and fracture sites, it is only necessary to adjust the contact area between the degradation sheet and the outside, pull the moving plate, adjust the moving plate to a position suitable for the patient's fracture healing speed, and adjust the contact area between the degradation sheet and the outside. The contact area of ​​the degradation sheet is proportional to the degradation speed of the degradation sheet, and the degradation sheet can be protected by the connecting film to prevent the degradation sheet from being degraded instantly, so as to facilitate rapid healing of different patients and fracture sites.

[0019] The two second-shaped sliding blocks at the lower end of the bone plate body are respectively slid into the second-shaped sliding grooves at the upper end of another bone plate body, and then the other bone plate bodies are spliced ​​in sequence according to the above-mentioned installation method, so that the lengths of multiple bone plate bodies are spliced ​​to a size suitable for the patient, and can adapt to the lengths of different fracture sites of different patients. Then, a professional tool is used to insert it into the cross groove on the connecting rod, and the professional tool is twisted to rotate the connecting rod. The connecting rod rotates and drives the driving-shaped rack plate to move upward, so that the rack plate drives the pin to be inserted into the first slot at the lower end of the second-shaped sliding block to fix the bone plate body, which is convenient for installation, disassembly and storage of the bone plate body;

[0020] When the connecting block is gradually degraded, that is, the connecting block is gradually degraded from the bottom, the first spring inside the fixing block is gradually exposed. Since the first spring is in a stretched state, the first spring can exert a pulling force on the fixing plate. Through the pulling force of the first spring, the auxiliary force and stability of the micro-adjustment of the rectangular block can be improved, thereby facilitating fracture healing and stress transfer of long bones. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 A schematic diagram of a front cross-sectional structure;

[0024] Figure 3 For the present invention Figure 2 A is an enlarged structural diagram;

[0025] Figure 4 It is a schematic diagram of the structure of the rectangular block, screw, fixing sheet and degradation sheet of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the moving plate, the first T-shaped sliding block, the baffle plate and the first T-shaped sliding groove of the present invention;

[0027] Figure 6 For the present invention Figure 1 A schematic diagram of the left-side cross-sectional structure;

[0028] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at B;

[0029] Figure 8 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cross-sectional structure of the main body of the bone fracture plate of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the second T-shaped sliding block and the second T-shaped sliding groove of the present invention.

[0032] [Reference Signs]

[0033] 100, main unit; 101, bone plate main body; 200, adjustment unit; 201, rectangular block; 202, rectangular groove; 203, screw; 204, fixing plate; 205, degradation plate; 206, limiting groove; 207, moving plate; 208, connecting membrane; 209, first T-shaped slider; 210, baffle; 211, first T-shaped slide groove; 212, second T-shaped slider; 213, second T-shaped slide groove; 214, limiting assembly; 214a , L-shaped rack plate; 214b, cavity; 214c, latch; 214d, T-shaped rack plate; 214e, plug block; 214f, connecting rod; 214h, cross groove; 214g, gear; 215, fixing block; 216, first spring; 217, trapezoidal block; 218, placement groove; 219, second spring; 220, connecting rope; 221, pull rope; 222, pull block; 223, circular groove; 224, through hole; 225, connecting block.

[0034] 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

[0035] 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.

[0036] 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).

[0037] 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.

[0038] 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.

[0039] 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.

[0040] like Figures 1 to 10 As shown, an embodiment of the present invention provides a time-regulated axial micro-motion bone fracture plate, including a main body unit 100 and an adjustment unit 200, the main body unit 100 includes a plurality of bone fracture plate bodies 101; the adjustment unit 200 includes a rectangular block 201, a plurality of the bone fracture plate bodies 101 are provided with a rectangular groove 202 in the middle, the rectangular block 201 is slidably connected to the inner wall of the rectangular groove 202, a screw 203 is threadedly connected to the bone fracture plate body 101, the screw 203 is threadedly inserted in the middle of the rectangular block 201, a fixing plate 204 is fixedly connected to the upper end of the rectangular block 201, a degradation plate 205 is fixedly connected to the upper end of the fixing plate 204, a limiting groove 206 that cooperates with the fixing plate 204 and the degradation plate 205 is provided on the bone fracture plate body 101, and a limiting component 214 is provided on the bone fracture plate body 101.

[0041] By adopting the above technical solution, the degradation sheet 205 is used as a time-varying switch, and the degradation time is used to regulate the time of axial micro-movement of the bone plate main body 101. The size of the micro-movement of each nail hole can be adjusted arbitrarily, which can achieve the best mechanical environment for fracture healing, and is more conducive to stress transfer of long bones and reduce stress shielding. The size of the degradation sheet 205 is approximately 0.2-1mm.

[0042] like Figure 4 As shown, a movable plate 207 is slidably connected to the left side of the upper end of the degradation sheet 205, and a connecting film 208 is fixedly connected between the inner wall of the limiting groove 206 and the movable plate 207, and the bottom end of the connecting film 208 is in contact with the degradation sheet 205 and the top inner wall of the limiting groove 206.

[0043] By adopting the above technical solution, when it is necessary to adjust the speed for different patients and fracture sites, it is only necessary to adjust the contact area between the degradation sheet 205 and the outside, pull the movable plate 207, adjust the movable plate 207 to a position suitable for the patient's fracture healing speed, and adjust the contact area between the degradation sheet 205 and the outside. The contact area of ​​the degradation sheet 205 is proportional to the degradation speed of the degradation sheet 205, and the degradation sheet 205 can be protected by the connecting film 208 to prevent the degradation sheet 205 from being degraded instantly, so as to facilitate rapid healing of different patients and fracture sites.

[0044] like Figure 5 As shown, the left end of the movable plate 207 is symmetrically fixedly connected with a first T-shaped slider 209, and the left side of the bone fracture plate body 101 is symmetrically fixedly connected with a baffle 210. The middle part of the baffle 210 is provided with a first T-shaped groove 211 which cooperates with the first T-shaped slider 209, and the two baffles 210 are respectively opposite to the top and bottom of the connecting membrane 208.

[0045] By adopting the above technical solution, when the movable plate 207 is pulled, the movable plate 207 can drive the first T-shaped slider 209 to slide in the baffle 210, which is more conducive to the adjustment of the movable plate 207, and the sliding of the first T-shaped slider 209 in the baffle 210 can also improve the stability of the movable plate 207 during the adjustment process. Since the baffle 210 is respectively opposite to the top and bottom of the connecting membrane 208, the baffle 210 can also increase the sealing of the connecting membrane 208.

[0046] like Fig.10 As shown, the lower ends of the plurality of bone fracture plate bodies 101 are all symmetrically fixedly connected with the second T-shaped slider 212 in a front-to-back manner, and the upper ends of the plurality of bone fracture plate bodies 101 are all provided with a second T-shaped slide groove 213 that cooperates with the second T-shaped slider 212. The second T-shaped slider 212 is slidably connected in the second T-shaped slide groove 213, one end of the second T-shaped slide groove 213 is through, and the other end of the second T-shaped slide groove 213 is not through.

[0047] By adopting the above technical solution, the two second T-shaped sliding blocks 212 at the lower end of the plate body 101 are respectively slid into the second T-shaped sliding groove 213 at the upper end of another plate body 101, and then the other plate bodies 101 are spliced ​​in turn according to the above installation method, so that the lengths of multiple plate bodies 101 are spliced ​​to a size suitable for the patient, which can adapt to the lengths of different fracture sites of different patients, and also facilitate the installation, disassembly and storage of the plate bodies 101.

[0048] like Figure 7 and Figure 8As shown, the limiting assembly 214 includes an L-shaped rack plate 214a, a cavity 214b is opened in the middle of the bone fracture plate body 101, the L-shaped rack plate 214a is slidably connected to the inner wall of the cavity 214b, the upper end of the L-shaped rack plate 214a is symmetrically fixedly connected with a latch 214c, the lower end of the second T-shaped slider 212 is opened with a first slot that cooperates with the latch 214c, the inner wall of the cavity 214b is slidably connected with a T-shaped rack plate 214d, and the T-shaped rack plate 214d The lower end of the movable plate 207 is fixedly connected with a plurality of plug blocks 214e, the upper end of the movable plate 207 is provided with a second slot which cooperates with the plug block 214e, the inner wall of the cavity 214b is rotatably connected with a connecting rod 214f, the connecting rod 214f ​​passes through the bone fracture plate body 101, the outer side of the connecting rod 214f ​​is fixedly connected with a gear 214g, the gear 214g is meshed with the L-shaped rack plate 214a and the T-shaped rack plate 214d, and the left end of the connecting rod 214f ​​is provided with a cross groove 214h.

[0049] By adopting the above technical solution, a professional tool is used to insert into the cross groove 214h on the connecting rod 214f, and then the professional tool is twisted to rotate the connecting rod 214f. While the connecting rod 214f ​​rotates, it drives the gear 214g, so that the gear 214g drives the L-shaped rack plate 214a and the T-shaped rack plate 214d at the same time, and the L-shaped rack plate 214a moves upward to drive the pin 214c, so that the pin 214c is inserted into the first slot at the lower end of the second T-shaped slider 212 to fix the bone joint plate body 101, which is convenient for the installation and disassembly of the bone joint plate body 101, and the gear 214g can also drive the T-shaped rack plate 214d, so that the T-shaped rack plate 214d drives multiple plug blocks 214e to move downward, so that one of the plug blocks 214e is inserted into the second slot on the movable plate 207 to fix the movable plate 207.

[0050] like Figure 8 As shown, a fixing block 215 is fixedly connected to the inner wall of the cavity 214b, and the fixing block 215 is made of rubber material. A circular hole is opened in the middle of the fixing block 215, and the cross-sectional diameter of the connecting rod 214f ​​is larger than the cross-sectional diameter of the circular hole. The connecting rod 214f ​​is inserted in the circular hole, and a rubber sleeve is fixedly connected to the outer wall of the connecting rod 214f ​​inserted in the circular hole.

[0051] By adopting the above technical solution, since the inner wall of the circular hole on the fixing block 215 and the connecting rod 214f ​​are fixedly connected with the rubber sleeve, the two rubber sleeves fit closely to each other, which can increase the friction between the connecting rod 214f ​​and the fixing block 215, thereby restricting the connecting rod 214f ​​and preventing the connecting rod 214f ​​from rotating at will.

[0052] like Figure 3As shown, a connecting block 225 is fixedly connected to the upper end of the degradation sheet 205, and the top of the connecting block 225 is in contact with the top inner wall of the limiting groove 206. The material of the connecting block 225 is the same as that of the degradation sheet 205. A first spring 216 is fixedly connected between the inner top wall of the limiting groove 206 and the fixing sheet 204. The first spring 216 is arranged in the middle of the connecting block 225, and the first spring 216 is in a stretched state.

[0053] By adopting the above technical solution, when the connecting block 225 is gradually degraded, that is, the connecting block 225 is gradually degraded from the bottom, the first spring 216 inside the fixing block 215 is gradually exposed. Since the first spring 216 is in a stretched state, the first spring 216 can exert a pulling force on the fixing plate 204. Through the pulling force of the first spring 216, the auxiliary force and stability of the micro-adjustment of the rectangular block 201 can be improved, thereby facilitating fracture healing and stress transfer of long bones.

[0054] like Figure 4 As shown, a trapezoidal block 217 is symmetrically slidably connected in the middle of the screw 203, and one side wall of the trapezoidal block 217 contacts a side wall of the rectangular block 201. A placement groove 218 is symmetrically opened in the middle of the screw 203, and the trapezoidal block 217 is slidably set in the placement groove 218. A second spring 219 is fixedly connected between the bottom wall of the placement groove 218 and the trapezoidal block 217.

[0055] By adopting the above technical solution, when the screw 203 is installed, when the screw 203 passes through the rectangular block 201, the trapezoidal block 217 is compressed into the placement groove 218, and the second spring 219 is in a compressed state. When the trapezoidal block 217 in the screw 203 completely passes through the rectangular block 201, the second spring 219 rebounds so that the trapezoidal block 217 pops out and fits against the side wall of the rectangular block 201, thereby limiting the screw 203 and preventing the screw 203 from rotating during use.

[0056] like Figure 4 As shown, the same connecting rope 220 is fixedly connected between the two trapezoidal blocks 217, the left end of the connecting rope 220 is fixedly connected to a pull rope 221, the left end of the pull rope 221 is fixedly connected to a pull block 222, and a circular groove 223 is formed at the left end of the screw 203, and the pull block 222 is placed in the circular groove 223.

[0057] By adopting the above technical solution, the pull block 222 drives the pull rope 221, and the pull rope 221 drives the two connecting ropes 220. Under the pulling force of the connecting rope 220, the trapezoidal block 217 can slide into the placement groove 218, thereby releasing the limitation on the screw 203 and facilitating the subsequent removal of the screw 203.

[0058] like Fig. 9As shown, the bone plate body 101 is symmetrically provided with a through opening 224 , the through opening 224 is elliptical, and the screw 203 is inserted in the middle of the through opening 224 .

[0059] By adopting the above technical solution, when the degradation sheet 205 is degraded, the screw 203 can be fine-tuned through the through hole 224 .

[0060] The working process of the technical solution provided by the present invention is as follows:

[0061] When in use, the two second T-shaped sliders 212 at the lower end of the plate body 101 are respectively slid into the second T-shaped groove 213 at the upper end of another plate body 101, and then the other plate bodies 101 are spliced ​​in turn according to the above-mentioned installation method, so that the lengths of multiple plate bodies 101 are spliced ​​to a size suitable for the patient.

[0062] When the speed needs to be adjusted for different patients and fracture sites, the movable plate 207 is pulled, and the movable plate 207 can drive the first T-shaped slider 209 to slide in the baffle 210, which is more conducive to the adjustment of the movable plate 207. The sliding of the first T-shaped slider 209 in the baffle 210 can also improve the stability of the movable plate 207 during the adjustment process. Since the baffle 210 is respectively opposite to the top and bottom of the connecting membrane 208, the baffle 210 can also increase the sealing of the connecting membrane 208.

[0063] When the movable plate 207 is adjusted to a speed suitable for the patient to recover from fracture, a professional tool is used to insert into the cross groove 214h on the connecting rod 214f, and then the professional tool is twisted to rotate the connecting rod 214f. The connecting rod 214f ​​rotates while driving the gear 214g, so that the gear 214g drives the L-shaped rack plate 214a and the T-shaped rack plate 214d at the same time. The L-shaped rack plate 214a moves upward to drive the pin 214c, so that the pin 214c is inserted into the first slot at the lower end of the second T-shaped slider 212 to fix the bone joint plate body 101, and the gear 214g can also drive The T-shaped rack plate 214d drives the multiple plug blocks 214e to move downward, so that one of the plug blocks 214e is inserted into the second slot on the movable plate 207 to fix the movable plate 207. Since the inner wall of the circular hole on the fixing block 215 and the connecting rod 214f ​​are fixedly connected with rubber sleeves, the two rubber sleeves fit closely to each other, which can increase the friction between the connecting rod 214f ​​and the fixing block 215, thereby limiting the connecting rod 214f ​​and preventing the connecting rod 214f ​​from rotating at will. Then the assembled bone fracture plate body 101 is used for fracture patients.

[0064] The degradation sheet 205 is used as a time-varying switch and the degradation time is utilized to regulate the time of axial micro-movement of the bone plate main body 101, and the size of the micro-movement of each nail hole can be arbitrarily adjusted. When the connecting block 225 is gradually degraded, that is, the connecting block 225 is gradually degraded from the bottom, the first spring 216 inside the fixed block 215 is gradually exposed. Since the first spring 216 is in a stretched state, the first spring 216 can exert a pulling force on the fixed sheet 204. Through the pulling force of the first spring 216, the auxiliary force and stability of the micro-motion adjustment of the rectangular block 201 can be improved, thereby facilitating fracture healing and stress transfer of long bones.

[0065] When the screw 203 needs to be installed, the screw 203 passes through the rectangular block 201, so that the trapezoidal block 217 is compressed into the placement groove 218, and the second spring 219 is in a compressed state. When the trapezoidal block 217 in the screw 203 completely passes through the rectangular block 201, the second spring 219 rebounds so that the trapezoidal block 217 pops out and fits against the side wall of the rectangular block 201, thereby limiting the screw 203 to prevent the screw 203 from rotating during use. When the screw 203 needs to be released from the limit, the pull rope 221 is driven by the pull block 222, and the pull rope 221 drives the two connecting ropes 220. Under the tension of the connecting rope 220, the trapezoidal block 217 can slide into the placement groove 218, thereby releasing the limit on the screw 203 and facilitating the subsequent removal of the screw 203.

[0066] 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 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.

[0067] 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. A time-controlled axial micro-motion bone plate, comprising a main unit and an adjustment unit, It is characterized in that The main body unit includes a plurality of bone plate bodies; The adjustment unit includes a rectangular block, and a plurality of the plate bodies are each provided with a rectangular groove in the middle thereof. The rectangular block is slidably connected to the inner wall of the rectangular groove. The plate body is threadedly connected with a screw, and the screw thread is inserted in the middle of the rectangular block. A fixing plate is fixedly connected to the upper end of the rectangular block, and a degradation plate is fixedly connected to the upper end of the fixing plate. A limiting groove cooperating with the fixing plate and the degradation plate is provided on the plate body, and a limiting component is arranged on the plate body.

2. The time-controlled axial micro-motion bone plate according to claim 1, It is characterized in that A movable plate is slidably connected to the left side of the upper end of the degradation sheet, a connecting film is fixedly connected between the inner wall of the limiting groove and the movable plate, and the bottom end of the connecting film is in contact with the degradation sheet and the top inner wall of the limiting groove.

3. The time-controlled axial micro-motion bone plate according to claim 2, It is characterized in that A first T-shaped slider is symmetrically fixedly connected to the left end of the movable plate, and a baffle is symmetrically fixedly connected to the left side of the bone fracture plate body. A first T-shaped groove cooperating with the first T-shaped slider is opened in the middle of the baffle, and the two baffles are respectively opposite to the top and bottom of the connecting membrane.

4. The time-controlled axial micro-motion bone plate according to claim 3, It is characterized in that The lower ends of the plurality of bone fracture plate bodies are all symmetrically fixedly connected with a second T-shaped slider front and back, and the upper ends of the plurality of bone fracture plate bodies are all provided with a second T-shaped slide groove that cooperates with the second T-shaped slider, and the second T-shaped slide groove is slidably connected in the second T-shaped slide groove, one end of the second T-shaped slide groove is through, and the other end of the second T-shaped slide groove is not through.

5. The time-controlled axial micro-motion bone plate according to claim 4, It is characterized in that The limiting assembly includes an L-shaped rack plate, a cavity is opened in the middle of the bone fracture plate body, the L-shaped rack plate is slidably connected to the inner wall of the cavity, the upper end of the L-shaped rack plate is symmetrically fixedly connected with a pin, the lower end of the second T-shaped slider is opened with a first slot that cooperates with the pin, the inner wall of the cavity is slidably connected with a T-shaped rack plate, the lower end of the T-shaped rack plate is fixedly connected with a plurality of plug blocks, the upper end of the movable plate is opened with a second slot that cooperates with the plug blocks, the inner wall of the cavity is rotatably connected with a connecting rod, the connecting rod passes through the bone fracture plate body, the outer side of the connecting rod is fixedly connected with a gear, the gear is meshed with the L-shaped rack plate and the T-shaped rack plate, and a cross groove is opened at the left end of the connecting rod.

6. The time-controlled axial micro-motion bone plate according to claim 5, It is characterized in that A fixing block is fixedly connected to the inner wall of the cavity. The fixing block is made of rubber material. A circular hole is opened in the middle of the fixing block. The cross-sectional diameter of the connecting rod is larger than the cross-sectional diameter of the circular hole. The connecting rod is inserted in the circular hole. A rubber sleeve is fixedly connected to the outer wall of the connecting rod inserted in the circular hole.

7. The time-controlled axial micro-motion bone plate according to claim 1, It is characterized in that A connecting block is fixedly connected to the upper end of the degradation sheet, the top of the connecting block is in contact with the top inner wall of the limiting groove, the material of the connecting block is the same as that of the degradation sheet, a first spring is fixedly connected between the top wall of the limiting groove and the fixed sheet, the first spring is arranged in the middle of the connecting block, and the first spring is in a stretched state.

8. The time-controlled axial micro-motion bone plate according to claim 1, It is characterized in that A trapezoidal block is symmetrically and slidably connected in the middle of the screw, one side wall of the trapezoidal block contacts a side wall of the rectangular block, a placement groove is symmetrically opened in the middle of the screw, the trapezoidal block is slidably set in the placement groove, and a second spring is fixedly connected between the bottom wall of the placement groove and the trapezoidal block.

9. The time-controlled axial micro-motion bone plate according to claim 8, It is characterized in that The same connecting rope is fixedly connected between the two trapezoidal blocks, the left end of the connecting rope is fixedly connected to a pull rope, the left end of the pull rope is fixedly connected to a pull block, a circular groove is opened at the left end of the screw, and the pull block is placed in the circular groove.

10. The time-controlled axial micro-motion bone plate according to claim 1, It is characterized in that The bone plate body is symmetrically provided with a through opening, the through opening is elliptical, and the screw is inserted in the middle of the through opening.

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