A split pressure-regulating steel plate

Abstract

The present invention discloses a split-type pressure-regulating steel plate, which comprises a steel plate body, a first pressure-regulating device, and a second pressure-regulating device. The first pressure-regulating device is arranged on one side of the steel plate body, and the second pressure-regulating device is arranged on the other side. The first pressure-regulating device is connected to the second pressure-regulating device through a traction rod. Pressure-regulating screw holes are provided on the steel plate body, and bone screws are installed in the pressure-regulating screw holes. The first pressure-regulating device and the second pressure-regulating device are used to adjust the radial stress of the bone screws in the pressure-regulating screw holes. The present invention is easy to fix and convenient to operate. The steel plate body in the present invention is fixed on the bone through the bone screws in the fixing screw holes, and the radial stress of the bone screws in the pressure-regulating screw holes is adjusted through the pressure-regulating devices in the pressure-regulating holes, so as to achieve the regulation of the axial stress at the fracture end, avoid stress shielding at the fracture end, accelerate fracture healing, reduce the incidence of nonunion, delayed union, and refracture after removing the steel plate, and shorten the fracture healing time.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and particularly relates to a split-type pressure-regulating steel plate. Background Art

[0002] The method of fixing an osteosynthesis plate and fixing corresponding pressure-regulating screws has been clinically used for many years. During the clinical treatment process, there are various methods for fixing fractures. Among them, plate fixation is one of the most commonly used methods. The traditional plate is fixed to the bone through corresponding pressure-regulating screws, making the plate integrated with the bone. However, in the later stage of fracture repair, the stress shielding effect limits the mechanical stimulation of bone tissue and cannot provide appropriate stress stimulation to the fracture end. Especially for comminuted fractures, there is no micro-movement, resulting in disadvantages such as delayed bone healing, non-union, slow bone mineralization speed, and long time wearing a frame, which limits its popularization and application. Therefore, designing a steel plate that can adjust the magnitude of the force applied to the bone and is applicable to the fixation device at different fracture repair stages is an urgent problem to be solved at present. Summary of the Invention

[0003] The purpose of the present invention is to provide an integrated pressure-regulating steel plate with a simple structure, convenient operation, easy fixation, capable of providing axial stress stimulation to the fracture end and accelerating bone healing.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A split-type pressure-regulating steel plate includes a steel plate body, a pressure-regulating device one, and a pressure-regulating device two. The pressure-regulating device one is arranged on one side of the steel plate body, and the pressure-regulating device two is arranged on the other side. The pressure-regulating device one is connected to the pressure-regulating device two through a traction rod. Pressure-regulating screw holes are arranged on the steel plate body, and bone screws are installed in the pressure-regulating screw holes. The pressure-regulating device one and the pressure-regulating device two are used to adjust the radial stress of the bone screws in the pressure-regulating screw holes.

[0006] Further, fixing screw holes are arranged on the steel plate body, and bone screws are installed in both the fixing screw holes and the pressure-regulating screw holes.

[0007] As a further optimization of the present invention, the pressure-regulating device one includes a pressure-regulating screw hole arranged on the steel plate body, a pressure-regulating screw in the pressure-regulating screw hole, a pressure-regulating hole one communicated with the pressure-regulating screw hole, and a pressure-regulating sleeve one. A pressure-regulating column one is arranged below the pressure-regulating sleeve one, and the pressure-regulating column one is located in the pressure-regulating hole one. The pressure-regulating sleeve one is connected to the pressure-regulating device two through a traction rod. The pressure-regulating device one and the pressure-regulating device two are pressure-regulated by one of the following methods:

[0008] ① An irregular-shaped gasket is sleeved on the tail of the pressure-regulating screw. One end of the irregular-shaped gasket abuts against the pressure-regulating column one. By replacing the lengths of different irregular-shaped gaskets, the axial stress of the pressure-regulating device two along the steel plate body is adjusted, and thus the axial stress of the fracture end is adjusted;

[0009] ② The pressure regulating screw hole is a pressure regulating long hole formed by at least two connected screw holes. A pressure regulating bolt is installed in the pressure regulating long hole, and a second nut is installed on the pressure regulating bolt. The axial stress of the second pressure regulating device along the steel plate body is adjusted according to the different positions of the pressure regulating bolt in the pressure regulating screw hole, so as to adjust the axial stress of the fracture end.

[0010] ③ The pressure regulating screw is an eccentric shaft. The axial stress of the second pressure regulating device along the steel plate body is adjusted according to the contact position between the eccentric shaft and the first pressure regulating column, so as to adjust the axial stress of the fracture end.

[0011] ④ The axial stress of the second pressure regulating device along the steel plate body is adjusted by replacing the pressure regulating screws with different tail diameters, so as to adjust the axial stress of the fracture end.

[0012] ⑤ A first guide post is arranged in the first pressure regulating hole. The axial stress of the second pressure regulating device along the steel plate body is adjusted by replacing the first guide posts with different lengths, so as to adjust the axial stress of the fracture end.

[0013] ⑥ The first pressure regulating hole is arranged along the axial direction of the steel plate body. The setscrew is threadedly connected to the steel plate body. The thickness of the steel plate at the first pressure regulating hole section is increased. The first pressure regulating hole can protrude from the upper surface of the steel plate body. The axial stress of the second pressure regulating device along the steel plate body is adjusted by adjusting the screwing depth of the setscrew, so as to adjust the axial stress of the fracture end.

[0014] ⑦ Two side pressure regulating holes are arranged on the steel plate body. A first guide post is installed in the first pressure regulating hole. The side pressure regulating holes are long holes arranged on both sides of the steel plate body and along the axial direction of the steel plate body. The long holes are formed by at least two connected screw holes. A sliding baffle is arranged on the steel plate body. Screw holes are arranged at both ends of the sliding baffle, and a sliding column is arranged in the middle. The sliding column abuts against the first guide post and can slide in the first pressure regulating hole. The pressure regulating bolt and the second nut fix the sliding baffle to the steel plate body through the screw holes. The radial stress of the pressure regulating screw is adjusted according to the different positions of the pressure regulating bolt in the side pressure regulating hole, so as to adjust the axial stress of the fracture end.

[0015] The second pressure regulating device includes a second pressure regulating sleeve connected to the traction rod and a second guide post. A second pressure regulating column is arranged below the second pressure regulating sleeve. One side of the second pressure regulating column abuts against one end of the second guide post, and the other end of the second guide post abuts against the bone screw in the pressure regulating screw hole. Or, a communicating second pressure regulating hole is arranged on one side of the pressure regulating screw hole. The second guide post is not installed in the second pressure regulating hole, and the second pressure regulating column abuts against the bone screw in the pressure regulating screw hole.

[0016] As another form of the present invention, the pressure regulating device one includes a pressure regulating sleeve one located on one side of the steel plate body. A threaded hole is axially provided on the pressure regulating sleeve one along the steel plate body. A set screw is installed in the threaded hole, and the bottom end of the set screw abuts against the steel plate body. A traction rod is provided on the pressure regulating sleeve one. The pressure regulating device two includes a pressure regulating sleeve two connected to the traction rod and a pressure regulating hole two communicating with the pressure regulating screw hole. A pressure regulating column two is provided below the pressure regulating sleeve two. The pressure regulating column two is located in the pressure regulating hole two. A guide column two is installed in the pressure regulating hole two. One end of the guide column two abuts against the bone screw in the pressure regulating screw hole, and the other end abuts against the pressure regulating column two.

[0017] As a further optimization of the present invention, a sliding hole is provided on the steel plate body. The sliding hole communicates with the pressure regulating hole two. A sliding plate is installed in the sliding hole. A pressure regulating screw hole is provided on the sliding plate. One end of the guide column two abuts against the sliding plate, and the other end abuts against the pressure regulating column two. By replacing the guide column two with different lengths, the axial stress of the sliding plate along the steel plate body is adjusted, and thus the axial stress of the fracture end is adjusted.

[0018] Further, the sliding hole is a special-shaped sliding hole. The opening on the upper surface of the steel plate body is larger than the opening on the lower surface, and the axial length of the sliding hole is greater than the axial length of the sliding plate.

[0019] Further, the pressure regulating device one is connected to the pressure regulating device two through a traction rod. A traction hole is provided on the pressure regulating sleeve one. A threaded section is provided on the traction rod. One end of the traction rod passes through the traction hole, and the other end of the traction rod is fixedly installed on the pressure regulating sleeve two through a fixing member. The fixing member is one of a nut one, a bulging part or a fixing clip. When it is a nut one, a threaded section is provided on the traction rod, and a nut one is installed on the threaded section. The nut one is threadedly connected to the traction rod.

[0020] Further, an anti-disengagement plate is provided on the sliding plate. The anti-disengagement plate, the pressure regulating sleeve one, the pressure regulating sleeve two are slidably connected to the steel plate body. According to the size of the surface covering the steel plate body, it is set as strip-shaped, spaced strip-shaped or full-plate-shaped. According to the connection form between the anti-disengagement plate, the pressure regulating sleeve one, the pressure regulating sleeve two and the steel plate body, it is set as a semi-sleeve or full-sleeve form. When the anti-disengagement plate, the pressure regulating sleeve one, the pressure regulating sleeve two are semi-sleeves, their two ends are buckled on both sides of the steel plate body, and a long slot hole is provided on the upper surface. When the anti-disengagement plate, the pressure regulating sleeve one, the pressure regulating sleeve two are in the full-sleeve form, long slot holes are provided on both the upper surface and the lower surface. The long slot hole corresponds to the pressure regulating screw hole on the sliding plate, and the radial dimension of the long slot hole is larger than the dimension of the pressure regulating screw hole.

[0021] Further, at least two anti-disengagement screws are provided on the steel plate body. The anti-disengagement screws are threadedly connected to the steel plate body. The tail parts of the anti-disengagement screws are pressed on the upper surface of the sliding plate to prevent the sliding plate from disengaging.

[0022] Further, the elastomer I and the elastomer II are one of a spring and an elastic capsule. When it is a spring, spring bases are arranged at both ends of the spring.

[0023] Further, traction grooves are respectively arranged on both sides of the steel plate body. Traction holes are respectively arranged on the first pressure regulating sleeve and the second pressure regulating sleeve. The traction rod penetrates through the traction hole and is fixedly connected thereto. The traction rod is one of a metal rod and a cable.

[0024] Further, the first pressure regulating sleeve and the second pressure regulating sleeve form a pressure regulating sleeve of an integral structure, and are arranged in a semi - sleeve or full - sleeve form according to the connection form with the steel plate body. When it is a semi - sleeve, both ends thereof are buckled on both sides of the steel plate body, and a long slot hole is arranged on the upper surface of the pressure regulating sleeve. When the pressure regulating sleeve is in the full - sleeve form, long slot holes are arranged on both the upper surface and the lower surface of the pressure regulating sleeve. The long slot holes correspond to the sliding plate pressure regulating screw holes, and the radial dimension of the long slot holes is larger than the dimension of the pressure regulating screw holes.

[0025] Further, the pressure regulating screw holes, the first pressure regulating holes and the fixing screw holes arranged on the steel plate body have one of the following forms:

[0026] ① At least two pressure regulating screw holes and at least one first pressure regulating hole are arranged at one end of the steel plate body.

[0027] ② Pressure regulating screw holes and first pressure regulating holes are arranged at both ends of the steel plate body, and the pressure regulating screw holes and the first pressure regulating holes are symmetrically arranged on the steel plate body.

[0028] ③ One end of the steel plate body is set as the fixing screw hole end, and the other end is set as the pressure regulating screw hole end. The end with the fixing screw hole is provided with an anatomical plate consistent with the anatomical shape of the joint part of the human limb bone, and at least two pressure regulating screw holes and at least one first pressure regulating hole are arranged at the pressure regulating screw hole end.

[0029] Further, the steel plate body is set as a straight steel plate or an arc - shaped steel plate with a certain radian consistent with the bone shape. The upper surface and the lower surface of the steel plate body are radially set as arc surfaces with a certain radian. The steel plate body is provided with at least one Kirschner wire hole for temporarily fixing the bone. Grooves can be arranged on the lower surfaces of both sides of the steel plate body and the anti - detachment plate.

[0030] The present invention is easy to fix and convenient to operate. The steel plate body in the present invention is fixed on the bone through the bone screw in the fixing screw hole, and the distance between the bone screw in the pressure regulating screw hole and the bone screw in the fixing screw hole is finely adjusted through the elastic pressure regulating device in the first pressure regulating hole, so as to realize regulating the stress at the fracture end, stimulating the body tissue, forming new bone to achieve the purpose of bone elongation, avoiding stress shielding at the fracture end, accelerating fracture healing, and shortening the wearing time of the steel plate. Description of the Drawings

[0031] Figure 1Structural schematic diagram of the first embodiment of the present invention;

[0032] Figure 2 is Figure 1 Cross-sectional view taken along the A-A direction in;

[0033] Figure 3 Structural schematic diagram of the second embodiment of the present invention;

[0034] Figure 4 is Figure 3 Cross-sectional view taken along the B-B direction in;

[0035] Figure 5 Structural schematic diagram of the third embodiment of the present invention;

[0036] Figure 6 is Figure 5 Cross-sectional view taken along the C-C direction in;

[0037] Figure 7 Structural schematic diagram of the fourth embodiment of the present invention;

[0038] Figure 8 Structural schematic diagram of the fifth embodiment of the present invention;

[0039] Figure 9 Structural schematic diagram of one of the sixth embodiments of the present invention;

[0040] Figure 10 Structural schematic diagram of another of the sixth embodiments of the present invention;

[0041] Figure 11 Structural schematic diagram of the eighth embodiment of the present invention;

[0042] Figure 12 is Figure 11 Cross-sectional view taken along the D-D direction in;

[0043] Figure 13 Structural schematic diagram of the ninth embodiment of the present invention;

[0044] Figure 14 is Figure 13 Structural schematic view from another angle;

[0045] Figure 15 Structural schematic diagram of the tenth embodiment of the present invention;

[0046] Figure 16 is Figure 15 Cross-sectional view taken along the E-E direction in;

[0047] Figure 17 Structural schematic diagram of the eleventh embodiment of the present invention;

[0048] Figure 18 is Figure 17 a sectional view in the F-F direction in;

[0049] Figure 19 a schematic structural view of the twelfth embodiment of the present invention;

[0050] Figure 20 a schematic structural view of the thirteenth embodiment of the present invention;

[0051] Figure 21 is Figure 20 a schematic structural view from another angle;

[0052] Figure 22 a schematic structural view of the thirteenth embodiment of the present invention where the anti-disengagement plate is a semi-set;

[0053] Figure 23 is Figure 22 a sectional view in the G-G direction in;

[0054] Figure 24 a schematic structural view of the thirteenth embodiment of the present invention where the anti-disengagement plate is a full set;;

[0055] Figure 25 is Figure 24 a sectional view in the H-H direction in;

[0056] Figure 26 a schematic structural view of the fourteenth embodiment of the present invention;

[0057] Figure 27 a schematic structural view of the fifteenth embodiment of the present invention;

[0058] Figure 28 a schematic structural view of the present invention where the steel plate body is arc-shaped;

[0059] Figure 29 a schematic structural view of the first embodiment of the present invention;

[0060] Figure 30 is Figure 29 a schematic structural view from another angle;

[0061] Figure 31 a schematic structural view of the present invention where a first nut and a corresponding first pressure regulating sleeve are installed on the middle drawbar;

[0062] Figure 32 a schematic structural view of the present invention where a bulged part and a corresponding first pressure regulating sleeve are provided on the middle drawbar;

[0063] Figure 33 a schematic structural view of the present invention where a sleeve and a corresponding first pressure regulating sleeve are provided on the middle drawbar;

[0064] Figure 34 It is a schematic structural diagram of the proximal humerus pressure-regulating plate of the present invention;

[0065] Figure 35 It is a schematic structural diagram of the lateral distal fibula pressure-regulating plate of the present invention;

[0066] Figure 36 It is a schematic structural diagram of the medial distal humerus pressure-regulating plate of the present invention;

[0067] Figure 37 It is a schematic structural diagram of the lateral distal femur pressure-regulating plate of the present invention;

[0068] Figure 38 It is a schematic structural diagram of the medial distal tibia pressure-regulating plate of the present invention;

[0069] Figure 39 It is a schematic structural diagram of the lateral distal humerus pressure-regulating plate of the present invention;

[0070] Figure 40 It is a schematic structural diagram of the lateral proximal femur pressure-regulating plate of the present invention;

[0071] Figure 41 It is a schematic structural diagram of the anterolateral distal tibia pressure-regulating plate of the present invention;

[0072] Figure 42 It is a schematic structural diagram of the volar distal radius pressure-regulating plate of the present invention;

[0073] Figure 43 It is a schematic structural diagram of the medial proximal tibia pressure-regulating plate of the present invention;

[0074] Figure 44 It is a schematic structural diagram of the phalanx T-plate pressure-regulating plate of the present invention;

[0075] Figure 45 It is a schematic structural diagram of the dorsal distal radius pressure-regulating plate of the present invention;

[0076] Figure 46 It is a schematic structural diagram of the lateral proximal tibia pressure-regulating plate of the present invention;

[0077] In the figure, 1 is the first pressure regulating sleeve, 2 is the fixing screw hole, 3 is the traction rod, 4 is the steel plate body, 5 is the pressure regulating screw hole, 6 is the second pressure regulating sleeve, 7 is the first pressure regulating hole, 8 is the first nut, 9 is the first pressure regulating column, 10 is the pressure regulating screw hole, 11 is the pressure regulating screw, 12 is the traction groove, 13 is the pressure regulating bolt, 14 is the second nut, 15 is the special-shaped gasket, 16 is the set screw, 17 is the side pressure regulating hole, 18 is the sliding baffle, 19 is the second pressure regulating hole, 20 is the eccentric shaft, 21 is the anti-detachment plate, 22 is the guide groove, 23 is the sliding plate, 24 is the upper slot hole, 25 is the lower slot hole, 26 is the anti-detachment screw, 27 is the first guide post, 28 is the second guide post, 29 is the bulging part, 30 is the Kirschner wire hole, 31 is the second pressure regulating column, 32 is the fixing clamp, 33 is the sliding hole, 34 is the traction hole. Specific embodiments

[0078] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0079] The first embodiment of the present invention is as Figure 1 、 Figure 2 shown. A split type pressure regulating steel plate includes a steel plate body 4, a first pressure regulating device, and a second pressure regulating device. The first pressure regulating device is arranged on one side of the steel plate body 4, and the second pressure regulating device is arranged on the other side. The first pressure regulating device is connected to the second pressure regulating device through a traction rod 3. A pressure regulating screw hole 5 is arranged on the steel plate body 4, and a bone screw is installed in the pressure regulating screw hole 5. The first pressure regulating device and the second pressure regulating device are used to adjust the radial stress of the bone screw in the pressure regulating screw hole 5. A fixing screw hole 2 is arranged on the steel plate body 4, and bone screws are installed in both the fixing screw hole 2 and the pressure regulating screw hole 5.

[0080] The first pressure regulating device includes a pressure regulating screw hole 10 arranged on the steel plate body 4, a pressure regulating screw 11 in the pressure regulating screw hole 10, a first pressure regulating hole 7 communicated with the pressure regulating screw hole 10, and a first pressure regulating sleeve 1. A first pressure regulating column 9 is arranged below the first pressure regulating sleeve 1. The first pressure regulating column 9 is located in the first pressure regulating hole 7. The first pressure regulating sleeve 1 is connected to the second pressure regulating device through a traction rod 3. The second pressure regulating device includes a second pressure regulating sleeve 6 connected to the traction rod 3. A second pressure regulating column 31 is arranged below the second pressure regulating sleeve 6. One end of the second guide post 28 abuts against the bone screw in the pressure regulating screw hole 5, and the other end abuts against the second pressure regulating column 31. A special-shaped gasket 15 is sleeved on the tail of the pressure regulating screw 11. One end of the special-shaped gasket 15 abuts against the first pressure regulating column 9. By replacing the lengths of different special-shaped gaskets 15, the axial stress of the second pressure regulating device along the steel plate body 4 is adjusted, and further the axial stress of the fracture end is adjusted.

[0081] The second embodiment of the present invention, as shown in Figure 3 , Figure 4 , is different from the first embodiment in that the pressure regulating screw hole 10 is a long pressure regulating hole formed by two connected screw holes. A pressure regulating bolt 13 is installed in the long pressure regulating hole, and a second nut 14 is installed on the pressure regulating bolt 13. The axial stress of the pressure regulating device two along the steel plate body 4 is adjusted according to the different positions of the pressure regulating bolt 13 in the pressure regulating screw hole 10, and then the axial stress of the fracture end is adjusted.

[0082] The third embodiment of the present invention, as shown in Figure 5 , Figure 6 , is different from the first embodiment in that the pressure regulating screw 11 is replaced with an eccentric shaft 20. The axial stress of the pressure regulating device two along the steel plate body 4 is adjusted according to the contact position between the eccentric shaft 20 and the first pressure regulating column 9, and then the axial stress of the fracture end is adjusted.

[0083] The fourth embodiment of the present invention, as shown in Figure 7 , is different from the first embodiment in that the axial stress of the pressure regulating device two along the steel plate body 4 is adjusted by replacing the pressure regulating screw 11 with different tail diameters, and then the axial stress of the fracture end is adjusted.

[0084] The fifth embodiment of the present invention, as shown in Figure 8 , is different from the first embodiment in that a first guide post 27 is arranged in the first pressure regulating hole 7. The axial stress of the pressure regulating device two along the steel plate body 4 is adjusted by replacing the first guide post 27 with different lengths, and then the axial stress of the fracture end is adjusted.

[0085] The sixth embodiment of the present invention is different from the fifth embodiment in that a plurality of pressure regulating devices two are arranged on the steel plate body 4, and a plurality of second pressure regulating sleeves 6 arranged on the traction rod 3 can be provided. As shown in Figure 9 , three second pressure regulating sleeves 6 are arranged on the steel plate body 4, and each second pressure regulating sleeve 6 is respectively located in the pressure regulating screw hole 5.

[0086] In the seventh embodiment of the present invention, the first pressure regulating device arranged on the steel plate body 4 can be located at any fixing screw hole 2 on the steel plate body 4. As shown in Figure 10 , the first pressure regulating device is located at the third fixing screw hole 2.

[0087] The eighth embodiment of the present invention, as shown in Figure 11 , Figure 12As shown, the difference from the sixth embodiment is that the first pressure regulating hole 7 is arranged along the axial direction of the steel plate body 4. The setscrew 16 is threadedly connected to the steel plate body 4. The thickness of the steel plate at the section of the first pressure regulating hole 7 is increased. The first pressure regulating hole 7 can protrude from the upper surface of the steel plate body 4. By adjusting the screwing depth of the setscrew 16, the axial stress of the second pressure regulating device along the axial direction of the steel plate body 4 is adjusted, and thus the axial stress of the fracture end is adjusted.

[0088] The ninth embodiment of the present invention, as Figure 13 , Figure 14 As shown, the difference from the eighth embodiment is that two side pressure regulating holes 17 are arranged on the steel plate body 4. A first guide post 27 is installed in the first pressure regulating hole 7. The side pressure regulating holes 17 are long holes arranged on both sides of the steel plate body 4 and along the axial direction of the steel plate body 4. The long holes are at least two connected screw holes. A sliding baffle 18 is arranged on the steel plate body 4. Screw holes are provided at both ends of the sliding baffle 18, and a sliding column is arranged in the middle. The sliding column abuts against the first guide post 27 and can slide in the first pressure regulating hole 7. The pressure regulating bolt 13 and the second nut 14 fix the sliding baffle 18 to the steel plate body 4 through the screw holes. According to the different positions of the pressure regulating bolt 13 in the side pressure regulating holes 17, the radial stress of the bone screw is adjusted, and thus the axial stress of the fracture end is adjusted.

[0089] The tenth embodiment of the present invention, as Figure 15 , Figure 16 As shown, the difference from the sixth embodiment is that the second pressure regulating sleeve 6 is a half sleeve, and its two ends are buckled on both sides of the steel plate body 4. An upper slot hole 24 formed by a long slot hole is arranged on the upper surface. The upper slot hole 24 corresponds to the pressure regulating screw hole 5, and the radial dimension of the upper slot hole 24 is larger than the dimension of the pressure regulating screw hole 5.

[0090] The eleventh embodiment of the present invention, as Figure 17 , Figure 18 As shown, the difference from the tenth embodiment is that the second pressure regulating sleeve 6 is a full sleeve and is slidably connected to the steel plate body 4. An upper slot hole 24 formed by a long slot hole is arranged on its upper surface and a lower slot hole 25 is arranged on its lower surface. The upper slot hole 24 and the lower slot hole 25 both correspond to the pressure regulating screw hole 5, and the radial dimensions are larger than the dimension of the pressure regulating screw hole 5.

[0091] The twelfth embodiment of the present invention, as Figure 19As shown, the difference from the sixth embodiment is that a sliding hole 33 is provided on the steel plate body 4. The sliding hole 33 communicates with the second pressure regulating hole 19. A sliding plate 23 is installed in the sliding hole 33. A pressure regulating screw hole 5 is provided on the sliding plate 23. One end of the second guide post 28 abuts against the sliding plate 23, and the other end abuts against the second pressure regulating post 31. By replacing the second guide post 28 with different lengths, the axial stress of the sliding plate 23 along the axis of the steel plate body 4 is adjusted, and thus the axial stress of the fracture end is adjusted. The sliding hole 33 is a special-shaped sliding hole 33. The opening on the upper surface of the steel plate body 4 is larger than the opening on the lower surface. The axial length of the sliding hole 33 is greater than the axial length of the sliding plate 23. At least two anti-detachment screws 26 are provided on the steel plate body 4. The anti-detachment screws 26 are threadedly connected to the steel plate body 4. The tails of the anti-detachment screws 26 are pressed on the upper surface of the sliding plate 23 to prevent the sliding plate 23 from coming out.

[0092] The thirteenth embodiment of the present invention, as Figure 20 , 21 shown, the difference from the twelfth embodiment is that the anti-detachment screw 26 on the sliding plate 23 is replaced with an anti-detachment plate 21. The anti-detachment plate 21 is slidably connected to the steel plate body 4. It is set as a strip shape or an intermittent strip shape according to the size of the steel plate body 4 covered on its surface, and is set as a semi-set or full-set form according to the connection form with the steel plate body 4. As Figure 22 , 23 shown, the anti-detachment plate 21 is set as a semi-set form. An upper slot hole 24 formed by a long slot hole is provided on its upper surface. The upper slot hole 24 corresponds to the pressure regulating screw hole 5, and the radial dimension is larger than the dimension of the pressure regulating screw hole 5. A guide slot 22 is provided on the lower surface of the steel plate body 4. The anti-detachment plate 21 is buckled on the steel plate body 4 and slides along the guide slot 22. As Figure 24 , 25 shown, the anti-detachment plate 21 is set as a full-set form. Upper slot holes 24 formed by long slot holes are provided on both its upper surface and lower surface. The upper slot holes 24 and the lower slot holes 25 both correspond to the pressure regulating screw hole 5, and the radial dimension is larger than the dimension of the pressure regulating screw hole 5.

[0093] The fourteenth embodiment of the present invention, as Figure 26 shown, the difference from the first embodiment is that the first pressure regulating sleeve 1 and the second pressure regulating sleeve 6 are a pressure regulating sleeve formed by an integral structure. It is set as a semi-set or full-set according to its connection form with the steel plate body 4. Its two ends are buckled on both sides of the steel plate body 4. An upper slot hole 24 formed by a long slot hole is provided on the upper surface of the pressure regulating sleeve. The upper slot hole 24 corresponds to the pressure regulating screw hole 5, and the radial dimension of the long slot hole is larger than the dimension of the pressure regulating screw hole 5.

[0094] The fifteenth embodiment of the present invention, as Figure 28As shown, the difference from the twelfth embodiment lies in the change of the pressure regulating form of the first pressure regulating device. The pressure regulating screw 11 is replaced with an eccentric shaft 20, and the eccentric shaft 20 directly abuts against the first pressure regulating column 27.

[0095] In the above embodiments, as Figure 31 , 32 , as shown in 33, the first pressure regulating device is connected to the second pressure regulating device through a traction rod 3. A traction hole is provided on the first pressure regulating sleeve 1. A threaded section is provided on the traction rod 3. One end of the traction rod 3 passes through the traction hole, and the other end of the traction rod 3 is fixedly installed on the second pressure regulating sleeve 6 through a fixing member. The fixing member is one of a first nut 8, a bulging part 29 or a fixing clip 32. Traction grooves 12 are respectively provided on both sides of the steel plate body 4. Traction holes 34 are respectively provided on the first pressure regulating sleeve 1 and the second pressure regulating sleeve 6. The traction rod 3 passes through the traction hole 34 and is tightly connected thereto; the traction rod 3 is one of a metal rod or a cable. When the fixing member is the first nut 8, a threaded section is provided on the traction rod 3, and the first nut 8 is installed on the threaded section. The first nut 8 is threadedly connected to the traction rod 3. At this time, the traction hole 34 is set to be open or closed. When the fixing member is one of the bulging part 29 or the fixing clip 32, the traction hole 34 is set to be open.

[0096] In addition, in the above embodiments, the form of the steel plate body can be set in various forms. As Figure 28 , 29 shown, the upper and lower surfaces of the steel plate body 4 are radially set as arc surfaces with a certain radian. Grooves can also be provided on the lower surfaces on both sides of the steel plate body 4 and the anti - detachment plate 21 to reduce the contact area with the skin. As Figure 30 shown, a Kirschner wire hole 30 is provided on the steel plate body 4. The Kirschner wire hole 30 is used for temporarily fixing bones. As Figures 34 - 46 shown, one end of the steel plate body 4 can be set to be consistent with the anatomical shape of the human bone and is an anatomical steel plate with a certain radian. Such as: proximal humerus pressure regulating steel plate, lateral distal fibula pressure regulating steel plate, medial distal humerus pressure regulating steel plate, lateral distal femur pressure regulating steel plate, medial distal tibia pressure regulating steel plate, lateral distal humerus pressure regulating steel plate, lateral proximal femur pressure regulating steel plate, anterior lateral distal tibia pressure regulating steel plate, palmar distal radius pressure regulating steel plate, medial proximal tibia pressure regulating steel plate, phalanx T - type pressure regulating steel plate, dorsal distal radius pressure regulating steel plate, lateral proximal tibia pressure regulating steel plate, etc.

[0097] As another form of the present invention, the pressure regulating screw holes 5, the first pressure regulating holes 7, and the fixing screw holes 2 provided on the steel plate body 4 have one of the following forms:

[0098] ① At least two pressure regulating screw holes 5 and at least one first pressure regulating hole 7 are provided at one end of the steel plate body 4;

[0099] ②Both ends of the steel plate body 4 are provided with pressure regulating screw holes 5 and first pressure regulating holes 7, and the pressure regulating screw holes 5 and the first pressure regulating holes 7 are symmetrically arranged on the steel plate body 4;

[0100] ③One end of the steel plate body 4 is set as the fixed screw hole 2 end, and the other end is set as the pressure regulating screw hole 5 end. One end of the fixed screw hole 2 is provided with an anatomical plate that is consistent with the anatomical shape of the joint part of the human limb bones. The pressure regulating screw hole 5 end is provided with at least two pressure regulating screw holes 5 and at least one first pressure regulating hole 7.

[0101] The above are only the preferred embodiments of the present invention and are not used to limit the embodiments of the present invention. For example, in the sixth embodiment, the form of the pressure regulating device is changed to the form in the third and fifth embodiments. In the embodiments with a cover plate, the fixing form of the cover plate and the pressure regulating device, or the form of the cover plate is changed, etc. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A split-type pressure-regulating steel plate, characterized in that, It includes a steel plate body, a pressure regulating device I, and a pressure regulating device II. The pressure regulating device I is arranged on one side of the steel plate body, and the pressure regulating device II is arranged on the other side. The pressure regulating device I is connected to the pressure regulating device II through a traction rod. Pressure regulating screw holes are arranged on the steel plate body, and bone screws are installed in the pressure regulating screw holes. The pressure regulating device I and the pressure regulating device II are used to adjust the radial stress of the bone screws in the pressure regulating screw holes; The pressure regulating device I includes a pressure regulating screw hole arranged on the steel plate body, a pressure regulating screw in the pressure regulating screw hole, a pressure regulating hole I communicated with the pressure regulating screw hole, and a pressure regulating sleeve I. A pressure regulating column I is arranged below the pressure regulating sleeve I. The pressure regulating column I is located in the pressure regulating hole I. The pressure regulating sleeve I is connected to the pressure regulating device II through a traction rod. The pressure regulating device I adjusts the pressure in one of the following ways: ① An abnormal-shaped gasket is sleeved on the tail of the pressure regulating screw. One end of the abnormal-shaped gasket abuts against the pressure regulating column I. By replacing the lengths of different abnormal-shaped gaskets, the axial stress of the pressure regulating device II along the steel plate body is adjusted, and thus the axial stress of the fracture end is adjusted; ② The pressure regulating screw hole is a pressure regulating long hole formed by at least two connected screw holes. A pressure regulating bolt is installed in the pressure regulating long hole, and a second nut is installed on the pressure regulating bolt. According to the different positions of the pressure regulating bolt in the pressure regulating screw hole, the axial stress of the pressure regulating device II along the steel plate body is adjusted, and thus the axial stress of the fracture end is adjusted; ③ The pressure regulating screw is an eccentric shaft. According to the different contact positions between the eccentric shaft and the pressure regulating column I, the axial stress of the pressure regulating device II along the steel plate body is adjusted, and thus the axial stress of the fracture end is adjusted; ④ By replacing pressure regulating screws with different tail diameters, the axial stress of the pressure regulating device II along the steel plate body is adjusted, and thus the axial stress of the fracture end is adjusted; ⑤ A first guide post is arranged in the pressure regulating hole I. By replacing first guide posts with different lengths, the axial stress of the pressure regulating device II along the steel plate body is adjusted, and thus the axial stress of the fracture end is adjusted; ⑥ The pressure regulating hole I is arranged along the axial direction of the steel plate body. The steel plate body is threadedly connected with a setscrew. The thickness of the steel plate at the pressure regulating hole I section is increased. The pressure regulating hole I can protrude from the upper surface of the steel plate body. By adjusting the screwing depth of the setscrew, the axial stress of the pressure regulating device II along the steel plate body is adjusted, and thus the axial stress of the fracture end is adjusted; ⑦ Two side pressure regulating holes are arranged on the steel plate body. A first guide post is installed in the pressure regulating hole I. The side pressure regulating holes are long holes arranged on both sides of the steel plate body and are arranged along the axial direction of the steel plate body. The long holes are at least two connected screw holes. A sliding baffle is arranged on the steel plate body. Screw holes are arranged at both ends of the sliding baffle, and a sliding column is arranged in the middle. The sliding column abuts against the first guide post and can slide in the pressure regulating hole I. The pressure regulating bolt and the second nut fix the sliding baffle to the steel plate body through the screw holes. According to the different positions of the pressure regulating bolt in the side pressure regulating holes, the radial stress of the pressure regulating screw is adjusted, and thus the axial stress of the fracture end is adjusted; The second pressure regulating device includes a second pressure regulating sleeve and a second guide post connected to the traction rod. A second pressure regulating post is arranged below the second pressure regulating sleeve. One side of the second pressure regulating post abuts against one end of the second guide post, and the other end of the second guide post abuts against the bone screw in the pressure regulating screw hole; alternatively, a second pressure regulating hole is arranged on one side of the pressure regulating screw hole and is communicated therewith. The second guide post is not installed in the second pressure regulating hole, and the second pressure regulating post abuts against the bone screw in the pressure regulating screw hole.

2. The split-type pressure-regulating steel plate according to claim 1, characterized in that, Fixing screw holes are arranged on the steel plate body, and bone screws are installed in both the fixing screw holes and the pressure regulating screw holes.

3. The split-type pressure-regulating steel plate according to claim 2, characterized in that, A sliding hole is arranged on the steel plate body. The sliding hole is communicated with the second pressure regulating hole. A sliding plate is installed in the sliding hole. A pressure regulating screw hole is arranged on the sliding plate. One end of the second guide post abuts against the sliding plate, and the other end abuts against the second pressure regulating post. By replacing the second guide posts with different lengths, the axial stress of the sliding plate along the steel plate body is adjusted, and thus the axial stress of the fracture end is adjusted.

4. The split-type pressure-regulating steel plate according to claim 3, characterized in that, The sliding hole is a special-shaped sliding hole. The opening on the upper surface of the steel plate body is larger than the opening on the lower surface, and the axial length of the sliding hole is greater than the axial length of the sliding plate.

5. The split-type pressure-regulating steel plate according to claim 4, characterized in that, The first pressure regulating device is connected to the second pressure regulating device through a traction rod. A traction hole is arranged on the first pressure regulating sleeve. A threaded section is arranged on the traction rod. One end of the traction rod passes through the traction hole, and the other end of the traction rod is fixedly installed on the second pressure regulating sleeve through a fixing member. The fixing member is one of a first nut, a bulged part or a fixing clip; when it is a first nut, a threaded section is arranged on the traction rod, and a first nut is installed on the threaded section. The first nut is threadedly connected to the traction rod, and the traction hole can be set as an open type or a closed type; when it is one of a bulged part or a fixing clip, the traction hole is set as an open type.

6. The split-type pressure-regulating steel plate according to claim 4, characterized in that, An anti-disengagement plate is arranged on the sliding plate. The anti-disengagement plate, the first pressure regulating sleeve, the second pressure regulating sleeve and the steel plate body are slidably connected. According to the size of the steel plate body covered on its surface, it is set as a strip shape, an intermittent strip shape or a full plate shape; according to the connection form of the anti-disengagement plate, the first pressure regulating sleeve and the second pressure regulating sleeve with the steel plate body, it is set as a semi-sleeve or a full-sleeve form. When the anti-disengagement plate, the first pressure regulating sleeve and the second pressure regulating sleeve are in a semi-sleeve form, both ends thereof are buckled on both sides of the steel plate body, and long groove holes are arranged on the upper surface; when the anti-disengagement plate, the first pressure regulating sleeve and the second pressure regulating sleeve are in a full-sleeve form, long groove holes are arranged on both the upper surface and the lower surface; the long groove holes correspond to the pressure regulating screw holes of the sliding plate, and the radial dimension of the long groove holes is larger than the dimension of the pressure regulating screw holes.

7. The split-type pressure-regulating steel plate according to claim 5, characterized in that, At least two anti-disengagement screws are arranged on the steel plate body. The anti-disengagement screws are threadedly connected to the steel plate body, and the tails of the anti-disengagement screws are pressed on the upper surface of the sliding plate to prevent the sliding plate from disengaging.

8. The split-type pressure-regulating steel plate according to claim 7, characterized in that, Traction grooves are respectively arranged on both sides of the steel plate body. Traction holes are respectively arranged on the first pressure regulating sleeve and the second pressure regulating sleeve. The traction rod passes through the traction holes and is tightly connected thereto; the traction rod is one of a metal rod or a cable.

9. The split-type pressure-regulating steel plate according to claim 8, characterized in that, The pressure regulating sleeve 1 and the pressure regulating sleeve 2 form a pressure regulating sleeve with an integral structure, which is set in the form of a half sleeve or a full sleeve according to its connection form with the steel plate body. When it is a half sleeve, its two ends are buckled on both sides of the steel plate body, and a long slot hole is arranged on the upper surface of the pressure regulating sleeve; when the pressure regulating sleeve is in the form of a full sleeve, long slot holes are arranged on both the upper surface and the lower surface of the pressure regulating sleeve; the long slot hole corresponds to the sliding plate pressure regulating screw hole, and the radial dimension of the long slot hole is larger than the dimension of the pressure regulating screw hole.

10. The split-type pressure-regulating steel plate according to claim 9, characterized in that, The pressure regulating screw holes, the first pressure regulating holes, and the fixing screw holes arranged on the steel plate body have one of the following forms: ① At least two pressure regulating screw holes and at least one first pressure regulating hole are arranged at one end of the steel plate body; ② Pressure regulating screw holes and first pressure regulating holes are arranged at both ends of the steel plate body, and the pressure regulating screw holes and the first pressure regulating holes are symmetrically arranged on the steel plate body; ③ One end of the steel plate body is set as the fixing screw hole end, and the other end is set as the pressure regulating screw hole end. The fixing screw hole end is provided with an anatomical plate consistent with the anatomical shape of the joint part of the human limb bones, and at least two pressure regulating screw holes and at least one first pressure regulating hole are arranged at the pressure regulating screw hole end.

11. The split-type pressure-regulating steel plate according to claim 10, characterized in that, The steel plate body is set as a straight steel plate or an arc-shaped steel plate with a certain radian consistent with the bone shape. The upper surface and the lower surface of the steel plate body are radially set as arc surfaces with a certain radian; at least one Kirschner wire hole is arranged on the steel plate body for temporarily fixing the bone; grooves can be arranged on the lower surfaces on both sides of the steel plate body and the anti-disengagement plate.

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