An integrated pressure-regulating steel plate

Abstract

The present invention discloses an integrated pressure-regulating steel plate, which comprises a steel plate body. Pressure-regulating screw holes and pressure-regulating holes are provided on the steel plate body. Bone screws are installed in the pressure-regulating screw holes, and a pressure-regulating device is installed in the pressure-regulating holes. The pressure-regulating device is 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 device 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 removal of the steel plate, and shorten the fracture healing time.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to an integrated pressure-regulating steel plate. Background Art

[0002] Bone fixation plates and fixation nails have been used clinically as internal fixation methods for many years. In the process of clinical treatment, there are many methods for fixing fractures, among which plate fixation is one of the most commonly used methods. Traditional bone fixation plates are fixed to the bones by screws, so that the plates and bones become one. However, in the later stage of fracture repair, due to the stress shielding effect of the plates, appropriate stress stimulation cannot be given to the fracture ends, which is prone to delayed fracture healing, non-union, and slow bone mineralization, limiting its application. Therefore, designing a plate that can adjust the stress size of the fracture ends and promote fracture healing is a difficult problem that needs to be solved in the clinic. Summary of the invention

[0003] The purpose of the present invention is to provide an integrated pressure-regulating steel plate which has a simple structure, is easy to operate, is easy to fix, can provide radial stress stimulation to the fracture end, and accelerates bone healing.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An integrated pressure-regulating steel plate comprises a steel plate body, wherein the steel plate body is provided with a pressure-regulating nail hole and a pressure-regulating hole, wherein a bone screw is installed in the pressure-regulating nail hole, and a pressure-regulating device is installed in the pressure-regulating hole, wherein the pressure-regulating device is used to adjust the radial stress of the bone screw in the pressure-regulating nail hole.

[0006] Furthermore, the steel plate body is provided with a fixing screw hole, and a bone screw is also installed in the fixing screw hole.

[0007] Furthermore, the pressure regulating nail hole is connected to the pressure regulating hole, and the radial stress of the bone screw in the pressure regulating nail hole is adjusted by one of the following methods:

[0008] ① The pressure regulating device comprises a screw installed in the pressure regulating hole and a pressure regulating nail hole. The screw is threadedly connected to the steel plate body. A special-shaped gasket is sleeved on the tail of the screw. The distal end of the special-shaped gasket abuts against the bone screw. The radial stress of the bone screw in the pressure regulating nail hole is adjusted by changing the length of the special-shaped gasket, thereby adjusting the axial stress of the fracture end.

[0009] ② The pressure regulating device includes a screw installed in the pressure regulating hole, a pressure regulating nail hole and a guide column. The screw is threadedly connected to the steel plate body, the tail of the screw abuts against one end of the guide column, and the other end of the guide column abuts against the bone screw in the pressure regulating nail hole. The radial stress of the bone screw in the pressure regulating nail hole is adjusted by changing the diameter of the tail of the screw, thereby adjusting the axial stress of the fracture end;

[0010] ③ The pressure regulating device includes a bolt installed in the pressure regulating hole, a pressure regulating screw hole, and a guide post. The bolt is threadedly connected to the steel plate body. The tail of the bolt abuts against one end of the guide post. A nut is installed on the bolt. The other end of the guide post abuts against the bone screw in the pressure regulating screw hole. The pressure regulating hole on the steel plate body is a pressure regulating long hole formed by at least two connected screw holes. The radial stress of the bone screw in the pressure regulating screw hole is adjusted according to the different positions of the bolt in the pressure regulating screw hole, and then the axial stress of the fracture end is adjusted;

[0011] ④ The pressure regulating hole is arranged along the axial direction of the steel plate body. The pressure regulating device is a setscrew installed in the pressure regulating hole. The setscrew is threadedly connected to the steel plate body. The top end of the setscrew abuts against the bone screw in the pressure regulating screw hole. The thickness of the steel plate at the pressure regulating hole section is increased. The pressure regulating hole can protrude from the upper surface of the steel plate body. The radial stress of the bone screw in the pressure regulating screw hole is adjusted by adjusting the screwing depth of the setscrew, and then the axial stress of the fracture end is adjusted;

[0012] ⑤ The pressure regulating device includes two side fixing holes, a sliding baffle, a fixing nail, and a guide post in the pressure regulating hole arranged on the steel plate body. The side fixing 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 hole is 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 one end of the guide post. The other end of the guide post abuts against the bone screw in the pressure regulating screw hole. The sliding column can slide in the pressure regulating hole. The fixing nail fixes the sliding baffle on the steel plate body. The radial stress of the bone screw in the pressure regulating screw hole is adjusted according to the different positions of the fixing nail in the side fixing hole, and then the axial stress of the fracture end is adjusted.

[0013] Further, the pressure regulating screw holes, pressure regulating holes, and fixing screw holes arranged on the steel plate body have one of the following forms:

[0014] ① At least two pressure regulating screw holes and at least one pressure regulating hole are arranged at one end of the steel plate body, and at least two fixing screw holes are arranged at the other end. The pressure regulating screw holes, pressure regulating holes, and fixing screw holes are symmetrically arranged on the steel plate body.

[0015] ② Both ends of the steel plate body are arranged as pressure regulating screw holes and pressure regulating holes. The pressure regulating screw holes and pressure regulating holes are symmetrically arranged on the steel plate body, and can be arranged in a straight line or in a staggered arrangement.

[0016] ③ One end of the steel plate body with the fixing screw hole is set as 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 pressure regulating hole are arranged at the other end of the steel plate body.

[0017] Further, a sliding hole is provided on the steel plate body. The sliding hole communicates with the pressure regulating hole. A sliding plate is installed in the sliding hole. A pressure regulating screw hole is provided on the sliding plate. One end of the sliding plate is installed with a pressure regulating device, and the radial stress of the sliding plate is adjusted through the pressure regulating device.

[0018] As a further optimization of the present invention, 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 radial length of the sliding hole is greater than the radial length of the sliding plate.

[0019] Further, at least two anti-loosening screws are provided on the steel plate body. The anti-loosening screws are threadedly connected to the steel plate body. The tail part of the anti-loosening screw is pressed on the upper surface of the sliding plate to prevent the sliding plate from coming out.

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

[0021] Further, the fixed screw holes provided on the steel plate body are set as screw holes without threads or locking screw holes with threads, or as long screw holes in combination of screw holes without threads and locking screw holes with threads.

[0022] In addition, the steel plate body is set as a straight steel plate or an arc-shaped steel plate with a certain arc consistent with the bone shape. The upper and lower surfaces of the steel plate body are radially set as arc surfaces with a certain arc; at least one Kirschner wire round hole is provided on the steel plate body for temporarily fixing the bone; grooves can be provided on the lower surfaces on both sides of the steel plate body and the anti-loosening plate.

[0023] 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 fixed screw holes. The distance between the bone screw in the pressure regulating screw hole and the bone screw in the fixed screw hole is finely adjusted through the pressure regulating device in the pressure regulating hole, so as to realize the regulation of the stress at the fracture end, avoid the stress shielding at the fracture end, and accelerate the fracture healing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the first embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of the second embodiment of the present invention;

[0026] Figure 3 Structural schematic diagram of the third embodiment of the present invention;

[0027] Figure 4 is Figure 3 Schematic cross-sectional view in the DD direction in

[0028] Figure 5 Structural schematic diagram of the fourth embodiment of the present invention;

[0029] Figure 6 Structural schematic diagram of the fifth embodiment of the present invention;

[0030] Figure 7 Structural schematic diagram of the sixth embodiment of the present invention;

[0031] Figure 8 Structural schematic diagram of the seventh embodiment of the present invention;

[0032] Figure 9 Structural schematic diagram of the eighth embodiment of the present invention;

[0033] Figure 10 Structural schematic diagram of the ninth embodiment of the present invention;

[0034] Figure 11 Structural schematic diagram of the tenth embodiment of the present invention;

[0035] Figure 12 is Figure 11 Schematic cross-sectional view in the AA direction in

[0036] Figure 13 Structural schematic diagram of the eleventh embodiment of the present invention;

[0037] Figure 14 is Figure 13 Schematic cross-sectional view in the BB direction in

[0038] Figure 15 Structural schematic diagram of the twelfth embodiment of the present invention;

[0039] Figure 16 is Figure 15 Schematic cross-sectional view in the CC direction in

[0040] Figure 17 Structural schematic diagram of the thirteenth embodiment of the present invention;

[0041] Figure 18 Structural schematic diagram of the fourteenth embodiment of the present invention;

[0042] Figure 19 Structural schematic diagram of the fifteenth embodiment of the present invention;

[0043] Figure 20 Structural schematic diagram of the sixteenth embodiment of the present invention;

[0044] Figure 21 Structural schematic diagram of the seventeenth embodiment of the present invention.

[0045]

Explanation of attached drawing reference numerals

[0046] 1 - Steel plate body, 2 - Fixed screw hole, 3 - Pressure regulating screw hole, 4 - Guide post, 5 - Screw, 6 - Sliding plate, 7 - Sliding hole, 8 - Special-shaped gasket, 9 - Fixed nail, 10 - Pressure regulating hole, 11 - Set screw, 12 - Sliding baffle, 13 - Side fixed hole, 14 - Anti-detachment plate, 15 - Anti-detachment screw, 16 - Long slot hole, 17 - Kirschner wire round hole, 18 - Bolt, 19 - Nut. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached 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 making creative efforts belong to the scope of protection of the present invention.

[0048] The first embodiment of the present invention, as Figure 1 shown, an integrated pressure regulating steel plate includes a steel plate body 1. The steel plate body 1 is provided with a fixed screw hole 2, a pressure regulating screw hole 3, and a pressure regulating hole 10. The pressure regulating screw hole 3 is communicated with the pressure regulating hole 10. The pressure regulating hole 10 is arranged along the axial direction of the steel plate body 1. A screw 5 is installed in the pressure regulating hole 10, and a pressure regulating device is installed in the pressure regulating hole 10. The pressure regulating device can change the radial stress of the bone screw in the pressure regulating screw hole 3. The pressure regulating device includes a screw 5 installed in the pressure regulating hole 10 and a guide post 4 installed in the pressure regulating hole 10. One end of the guide post 4 abuts against the screw 5, and the other end abuts against the bone screw in the pressure regulating screw hole 3. The screw 5 abuts against the guide post 4. By changing the diameter of the tail of the screw 5, the radial stress of the bone screw in the pressure regulating screw hole is adjusted, and thus the axial stress of the fracture end is adjusted.

[0049] During use, bone screws are respectively installed in the fixed screw hole 2 and the pressure regulating screw hole 3, and the bone screws are fixed on the bone. The pressure regulating device in the pressure regulating hole 10 is adjusted to finely adjust the radial stress of the bone screw in the pressure regulating screw hole 3, and thus the axial stress of the fracture end is adjusted.

[0050] The second embodiment of the present invention, as Figure 2As shown in the figure, an integrated pressure-regulating steel plate includes a steel plate body 1, and the steel plate body 1 is provided with fixing screw holes 2, pressure-regulating screw holes 3, and pressure-regulating holes 10. The pressure-regulating screw holes 3 communicate with the pressure-regulating holes 10. A screw 5 is installed in the pressure-regulating hole 10, and a pressure-regulating device capable of adjusting the radial stress of the bone screw in the pressure-regulating screw hole 3 is installed in the pressure-regulating hole 10. The pressure-regulating device includes a screw 5 installed in the pressure-regulating hole 10, and a special-shaped gasket 8 is installed at the tail of the screw 5. The pressure-regulating end of the special-shaped gasket 8 abuts against the bone screw in the pressure-regulating screw hole 3.

[0051] During use, bone screws are respectively installed in the fixing screw holes 2 and the pressure-regulating screw holes 3, and the bone screws are fixed on the bone. The pressure-regulating device in the pressure-regulating hole 10 is adjusted to finely adjust the radial stress of the bone screw in the pressure-regulating screw hole 3. In this embodiment, by changing the length of the guide post end of the special-shaped gasket 8, the radial stress of the bone screw in the pressure-regulating screw hole 3 is adjusted, and thus the axial stress of the fracture end is adjusted.

[0052] The third embodiment of the present invention is as Figure 3 , Figure 4 As shown in the figure, the difference from the first embodiment is that the pressure-regulating device includes a guide post 4, a bolt 18, and a pressure-regulating hole 10 installed in the pressure-regulating hole. The bolt 18 is threadedly connected to the steel plate body 1, and a nut 19 is installed on the bolt. The pressure-regulating hole 10 on the steel plate body 1 is a pressure-regulating long hole formed by two connected screw holes. By adjusting the different positions of the bolt 18 in the pressure-regulating long hole, the radial stress of the bone screw in the pressure-regulating screw hole 3 is adjusted.

[0053] The fourth embodiment of the present invention is as Figure 5 As shown in the figure, the difference from the first embodiment is that the pressure-regulating device includes a setscrew 11 installed in the pressure-regulating hole 10. A guide post 4 is installed at the bottom end of the setscrew 11, and the other end of the guide post 4 contacts the bone screw in the pressure-regulating screw hole 3. The pressure-regulating screw hole 3 protrudes from the upper surface of the steel plate body 1. By adjusting the position of the setscrew 11, the radial force of the bone screw in the pressure-regulating screw hole 3 is adjusted. In this embodiment, the guide post 4 can also be omitted, and the bottom end of the setscrew 11 directly contacts the bone screw in the pressure-regulating screw hole 3. The radial stress of the bone screw is adjusted by the depth of the setscrew 11 entering the steel plate body 1, and thus the axial stress of the fracture end is adjusted.

[0054] The fifth embodiment of the present invention is as Figure 6As shown, the difference from the first embodiment is that the voltage regulating device includes two side fixing holes 13, a sliding baffle 12, a fixing nail 9, and a guide post in the voltage regulating hole 10 provided on the steel plate body. The side fixing holes 13 are long holes provided on both sides of the steel plate body and are arranged along the axis of the steel plate body 1. The long holes are two connected screw holes. A sliding baffle 12 is provided on the steel plate body 1. The two ends of the sliding baffle 12 are provided with screw holes, and a sliding column is provided in the middle. The sliding column abuts against the guide post 4 and can slide in the voltage regulating hole 10. The fixing nail 9 fixes the sliding baffle 12 to the steel plate body 1. According to the different positions of the fixing nail 9 in the side fixing holes 13, the axial stress of the guide post 4 is adjusted, and the radial stress of the bone screw in the voltage regulating nail hole 3 is adjusted through the guide post 4, so as to adjust the axial stress of the fracture end.

[0055] The sixth embodiment of the present invention, as Figure 7 shown, the difference from the first embodiment is that three voltage regulating nail holes 3 and voltage regulating holes 10 are provided on the steel plate body 1 and are arranged on one side of the steel plate body 1, and the fixing screw holes 2 are arranged on the other side of the steel plate body 1. In this embodiment, according to different recovery periods, the radial stress of the bone screw in the voltage regulating nail hole 3 is adjusted by the screw 5.

[0056] The seventh embodiment of the present invention, as Figure 8 shown, the difference from the first embodiment is that the fixing screw holes 2 are not provided on the steel plate body 1, and the voltage regulating nail holes 3 and voltage regulating holes 10 are arranged at the positions of the fixing screw holes 2 and are symmetrically arranged on the steel plate body 1. The radial stress of the bone screw in the voltage regulating nail hole 3 is adjusted by the adjusting screw 5, so as to adjust the axial stress of the fixed bone.

[0057] The eighth embodiment of the present invention, as Figure 9 shown, the difference from the first embodiment is that a sliding hole 7 is provided on the steel plate body 1. The sliding hole 7 is communicated with the voltage regulating hole 10. A sliding plate 6 is installed in the sliding hole 7. A voltage regulating nail hole 3 is provided on the sliding plate 6. A voltage regulating device is installed on one side of the sliding plate 6, and the voltage regulating device can make the sliding plate 6 move axially along the sliding hole 7. The sliding hole 7 is a special-shaped sliding hole, that is, the opening on the upper surface of the steel plate body 1 is larger than the opening on the lower surface. The setting of the special-shaped sliding hole 7 can effectively prevent the sliding plate 6 from falling off. An anti-detachment screw 15 is provided on the steel plate body 1, which can also effectively prevent the sliding plate 6 from sliding out of the sliding hole 7. By adjusting the sliding plate 6, the radial stress of the bone screw in the sliding plate 6 is adjusted, so as to adjust the axial stress of the fixed bone.

[0058] The ninth embodiment of the present invention, as Figure 10As shown, the difference from the eighth embodiment is that the anti - detachment screw 15 provided on the steel plate body 1 is replaced with an anti - detachment plate 14. Both ends of the anti - detachment plate 14 are buckled on the steel plate body 1 to prevent the sliding plate 6 from sliding out of the sliding hole 7. The anti - detachment plate 14 is strip - shaped. In addition, the pressure - regulating hole 10 is long - slot - shaped. By adjusting the position of the adjusting screw 5 in the pressure - regulating hole 10, the radial stress of the bone screw in the pressure - regulating screw hole 3 is adjusted, and thus the axial stress for fixing the bone is adjusted.

[0059] The tenth embodiment of the present invention, as Figure 11 、 12 shown, the difference from the ninth embodiment is that the anti - detachment plate 14 is in the form of a full - plate semi - sleeve. Both ends of the anti - detachment plate 14 are buckled on the steel plate body 1. A long - slot hole 16 is provided on the anti - detachment plate 14, which corresponds to the pressure - regulating screw hole 4 on the sliding plate 6, and the axial dimension of the long - slot hole 16 is larger than the dimension of the pressure - regulating screw hole 4.

[0060] The eleventh embodiment of the present invention, as Figure 13 、 14 shown, the difference from the tenth embodiment is that the anti - detachment plate 14 is in the form of a full - plate full - sleeve, and long - slot holes 16 are provided on both the upper and lower layers of the anti - detachment plate 14.

[0061] The twelfth embodiment of the present invention, as Figure 15 、 16 shown, the difference from the first embodiment is that a Kirschner wire round hole 17 is provided on the steel plate body for temporarily fixing the bone, and the upper surface of the steel plate body 1 is an arc surface with a certain radian. As Figure 17 、 18 shown in 19, 20, 21, one end of the steel plate body 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, distal fibula elastic steel plate, medial distal humerus pressure - regulating steel plate, lateral distal femur pressure - regulating steel plate, medial distal tibia pressure - regulating steel plate, proximal femur elastic steel plate, medial tibial plateau pressure - regulating steel plate, lateral tibial plateau pressure - regulating steel plate, anterolateral distal tibia pressure - regulating steel plate, lateral distal humerus pressure - regulating steel plate, proximal ulna pressure - regulating steel plate, palmar distal radius pressure - regulating steel plate, dorsal distal radius pressure - regulating steel plate, T - shaped and L - shaped pressure - regulating steel plates for the metaphyseal ends of fingers and metacarpals, etc.

[0062] In the above - mentioned embodiments, grooves can be provided on the lower surfaces on both sides of the steel plate body and the anti - detachment plate to reduce the contact area between the steel plate body and the bone.

[0063] The above are only the preferred embodiments of the present invention and are not intended to limit the embodiments of the present invention. For example, in Embodiments VIII, IX, X, and XI, the form of the voltage regulating device is changed to the form in Embodiments II, III, IV, and V. In the embodiments with a sliding plate, the form of fixing the sliding plate, the arrangement of fixing screw holes and voltage regulating screw holes, or other combinations of forms, etc. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated pressure-regulating steel plate, characterized in that it includes a steel plate body, on which there are pressure-regulating screw holes and pressure-regulating holes. A bone screw is installed in the pressure-regulating screw hole, and a pressure-regulating device is installed in the pressure-regulating hole. The pressure-regulating device is used to adjust the radial stress of the bone screw in the pressure-regulating screw hole; there are fixing screw holes on the steel plate body, and bone screws are also installed in the fixing screw holes; the pressure-regulating screw hole is communicated with the pressure-regulating hole, and the radial stress of the bone screw in the pressure-regulating screw hole is adjusted by one of the following methods: ① The pressure-regulating device includes a screw installed in the pressure-regulating hole and the pressure-regulating screw hole. The screw is threadedly connected to the steel plate body, and a special-shaped gasket is sleeved on the tail of the screw. The distal end of the special-shaped gasket abuts against the bone screw. By changing the length of the special-shaped gasket, the radial stress of the bone screw in the pressure-regulating screw hole is adjusted, and then the axial stress of the fracture end is adjusted; ② The pressure-regulating device includes a screw installed in the pressure-regulating hole, the pressure-regulating screw hole and a guide post. The screw is threadedly connected to the steel plate body. The tail of the screw abuts against one end of the guide post, and the other end of the guide post abuts against the bone screw in the pressure-regulating screw hole. By changing the diameter of the tail of the screw, the radial stress of the bone screw in the pressure-regulating screw hole is adjusted, and then the axial stress of the fracture end is adjusted; ③ The pressure-regulating device includes a bolt installed in the pressure-regulating hole, the pressure-regulating screw hole and a guide post. The bolt is threadedly connected to the steel plate body. The tail of the bolt abuts against one end of the guide post. A nut is installed on the bolt. The other end of the guide post abuts against the bone screw in the pressure-regulating screw hole. The pressure-regulating hole on the steel plate body is a pressure-regulating long hole formed by at least two connected screw holes. According to the different positions of the bolt in the pressure-regulating screw hole, the radial stress of the bone screw in the pressure-regulating screw hole is adjusted, and then the axial stress of the fracture end is adjusted; ④ The pressure-regulating hole is arranged along the axial direction of the steel plate body. The pressure-regulating device is a setscrew installed in the pressure-regulating hole. The setscrew is threadedly connected to the steel plate body. The top end of the setscrew abuts against the bone screw in the pressure-regulating screw hole. The thickness of the steel plate at the pressure-regulating hole section is increased. The pressure-regulating hole can protrude from the upper surface of the steel plate body. By adjusting the screwing depth of the setscrew, the radial stress of the bone screw in the pressure-regulating screw hole is adjusted, and then the axial stress of the fracture end is adjusted; ⑤ The pressure-regulating device includes two side fixing holes, a sliding baffle, a fixing nail and a guide post in the pressure-regulating hole arranged on the steel plate body. The side fixing 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 hole is formed by at least two connected screw holes. There is a sliding baffle on the steel plate body. There are screw holes at both ends and a sliding column in the middle on the sliding baffle. The sliding column abuts against one end of the guide post, and the other end of the guide post abuts against the bone screw in the pressure-regulating screw hole. The sliding column can slide in the pressure-regulating hole. The fixing nail fixes the sliding baffle on the steel plate body. According to the different positions of the fixing nail in the side fixing hole, the radial stress of the bone screw in the pressure-regulating screw hole is adjusted, and then the axial stress of the fracture end is adjusted.

2. The integrated pressure-regulating steel plate according to claim 1, characterized in that the pressure-regulating screw holes, pressure-regulating holes and fixing screw holes arranged on the steel plate body have one of the following forms: ① At one end of the steel plate body, at least two pressure regulating screw holes and at least one pressure regulating hole are provided, and at the other end, at least two fixing screw holes are provided. The pressure regulating screw holes, pressure regulating holes and fixing screw holes are symmetrically arranged on the steel plate body; ② Both ends of the steel plate body are provided with pressure regulating screw holes and pressure regulating holes. The pressure regulating screw holes and pressure regulating holes are symmetrically arranged on the steel plate body and can be arranged in a straight line or in a staggered arrangement; ③ One end of the fixing screw hole of the steel plate body is provided with an anatomical plate that is consistent with the anatomical shape of the joint part of the human limb bone. At the other end of the steel plate body, at least two pressure regulating screw holes and at least one pressure regulating hole are provided.

3. The integrated pressure regulating steel plate according to claim 2, wherein a sliding hole is provided on the steel plate body. The sliding hole is communicated with the pressure regulating hole. A sliding plate is installed in the sliding hole. A pressure regulating screw hole is provided on the sliding plate. One end of the sliding plate is installed with a pressure regulating device to adjust the radial stress of the sliding plate through the pressure regulating device.

4. The integrated pressure regulating steel plate according to claim 3, wherein 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. The radial length of the sliding hole is greater than the radial length of the sliding plate.

5. The integrated pressure regulating steel plate according to claim 4, wherein at least two anti-loosening screws are provided on the steel plate body. The anti-loosening screws are threadedly connected with the steel plate body. The tail parts of the anti-loosening screws are pressed on the upper surface of the sliding plate to prevent the sliding plate from slipping out.

6. The integrated pressure regulating steel plate according to claim 5, wherein an anti-loosening plate is provided on the sliding plate. The anti-loosening plate is slidably connected with the steel plate body. According to the covering size of its surface, the anti-loosening plate is set as a strip shape, an interval strip shape or a full plate shape; according to the connection form between the anti-loosening plate and the steel plate body, it is set as a semi-sleeve or full-sleeve form. When the anti-loosening plate is in a strip shape, both ends of the anti-loosening plate are buckled on both sides of the steel plate body; when the anti-loosening plate is in a full-sleeve form, long slot holes are provided on both the upper surface and the lower surface of the anti-loosening plate, and the long slot holes correspond to the pressure regulating screw holes of the sliding plate; when the anti-loosening plate is in a semi-sleeve form, long slot holes are provided on the upper surface of the anti-loosening plate, and the long slot holes correspond to the pressure regulating screw holes of the sliding plate, and the radial dimension of the long slot holes is larger than the dimension of the pressure regulating screw holes.

7. The integrated pressure regulating steel plate according to claim 1, wherein the fixing screw holes provided on the steel plate body are set as screw holes without threads or locking screw holes with threads, or are set as long screw holes in combination of screw holes without threads and locking screw holes with threads.

8. The integrated pressure regulating steel plate according to claim 7, wherein the steel plate body is set as a straight steel plate or an arc-shaped steel plate with a certain radian that is 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 round hole is provided on the steel plate body for temporarily fixing the bone; grooves can be provided on the lower surfaces on both sides of the steel plate body and the anti-loosening plate.

Images