Locking metal bone fracture plate

Abstract

The invention relates to a locking metal bone fracture plate which comprises a bone fracture plate body and fixing pieces, multiple sets of fixing holes are formed in the bone fracture plate body, each set of fixing holes comprises two circular insertion holes with tangent edges, the multiple sets of fixing pieces correspond to the multiple sets of fixing holes in a one-to-one mode, and each set of fixing pieces comprises two fixing screws. One ends of the two fixing screws are spirally connected to the two circular inserting holes in a one-to-one correspondence mode and screwed into the bone, the other ends of the two fixing screws abut against each other, a locking piece is arranged in one fixing screw, and an annular clamping groove capable of being clamped with the locking piece is formed in the outer portion of the other fixing screw. The bone fracture plate can be fixed through the two fixing screws in each set of fixing pieces, meanwhile, the two fixing screws can drive the locking pieces to act while being fixed to the bone fracture plate, and therefore the other fixing screw is locked through the thread screwing work of one fixing screw, and further interlocking is achieved; the stability when the bone fracture plate is fixed on a bone by the two fixing screws is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a locking metal bone plate. Background Art

[0002] Standard plate technology is a surgical method that involves cutting the skin and soft tissue at the fracture site and fixing a metal plate (called a plate) on both sides of the fracture. The function of the plate is to maintain the stability of the fracture ends and promote fracture healing. This method is suitable for complex or unstable fractures, such as open fractures, articular fractures, etc.

[0003] Internal fixation is a non-surgical method that fixes the fracture ends together by inserting metal nails, screws or plates into the fracture site. Internal fixation can be divided into two types: external fixation and internal fixation. External fixation is to fix the fracture ends by installing a metal bracket on the skin surface. It is suitable for patients with severe soft tissue injuries or infections. Internal fixation is to insert metal instruments directly into the bone marrow cavity or muscle to achieve the purpose of fixing the fracture.

[0004] Existing bone plates can also be inserted with metal nails or screws so that they can be fixed to cope with different types of fractures. When the bone plates are fixed on both sides of the fracture site, there is still a safety hazard of unstable fixation and easy loosening. Summary of the invention

[0005] The present application provides a locking metal bone plate, which can solve the problem that the existing metal bone plates are poor in stability when fixed on both sides of the fracture site and have the potential safety hazard of loosening.

[0006] The technical solution of the present application is as follows: A locking metal bone plate comprises: A bone fracture plate, wherein the bone fracture plate is provided with a plurality of groups of fixing holes, each group of the fixing holes comprising two circular sockets with tangent edges; A fixing piece, wherein the fixing piece is provided with multiple groups and corresponds one-to-one with the multiple groups of fixing holes, each group of the fixing piece comprises two fixing screws, one end of the two fixing screws is spirally connected to the two circular sockets one-to-one and screwed into the bone, and the other ends are in conflict with each other, one of the fixing screws is provided with a locking piece inside, and the other fixing screw is provided with an annular groove that can be engaged with the locking piece outside, and the two fixing screws fix the bone plate on the bone, and the two fixing screws are interlocked through the engagement between the locking piece and the annular groove.

[0007] By adopting the above scheme, by setting up multiple groups of fixing parts and setting pairs of fixing screws on each group of fixing parts, when the bone plate is fixed to the bone, the two fixing screws inside each group of fixing parts can be used to fix the bone plate. At the same time, when the two fixing screws are fixed to the bone plate, they can drive the locking parts to move, so that the threaded engagement of one of the fixing screws can be used to lock the other fixing screw, thereby achieving further interlocking and improving the stability of the two fixing screws when fixing the bone plate to the bone.

[0008] In one embodiment of the present application, the circular jack includes: A columnar through hole, wherein the columnar through hole is arranged on the surface of the bone plate; A first threaded hole, the first threaded hole is coaxially arranged outside the cylindrical through hole and communicated with the cylindrical through hole; A second threaded hole, wherein the second threaded hole is coaxially arranged above the first threaded hole, the diameter of the second threaded hole is larger than that of the first threaded hole, and the second threaded hole is connected to the columnar through hole.

[0009] In one embodiment of the present application, the fixing screw comprises: A screw part, one end of which passes through the columnar through hole and is screwed into the bone; A first stud, the first stud is coaxially fixedly assembled above the screw portion and is threadedly connected to the first threaded hole; A second stud is coaxially fixedly assembled above the first stud and is threadedly connected to the second threaded hole.

[0010] By adopting the above scheme, by setting the first threaded hole and the second threaded hole, using two first threaded holes and second threaded holes stacked up and down, and threading the first stud and the second stud of the fixing screw into the first threaded hole and the second threaded hole respectively, since the diameters of the first stud and the second stud are different, the stress when the fixing screw is threadedly connected to the first threaded hole and the second threaded hole can be offset to a certain extent, and the stability of the fixing screw when it is fixed inside the circular socket is improved.

[0011] In one embodiment of the present application, the locking element comprises: A threaded connection column, wherein the threaded connection column is coaxially arranged on the first stud of one of the fixing screws, wherein a threaded cavity is coaxially arranged inside the second stud of one of the fixing screws, and is threadedly connected to the threaded connection column through the threaded cavity, wherein a strip slide extending radially along the second stud is arranged inside the second stud, wherein the strip slide is arranged on the side of the threaded cavity, wherein a clamping strip is arranged inside the strip slide, wherein a hemispherical protrusion is coaxially arranged on the top of the threaded connection column, wherein an inclined surface matching the hemispherical protrusion is arranged on the lower surface of one end of the clamping strip close to the threaded cavity, and a matching inclined surface is arranged on the upper surface of the other end of the clamping strip to avoid spatial interference when the other end of the clamping strip is inserted into the annular clamping groove; The annular groove is arranged on the other fixing screw and circumferentially arranged on the side of the second stud of the other fixing screw; The distance h between the lower surface of the clip strip and the lower surface of the second stud and the thickness d of the threaded connection column satisfy: h <d。

[0012] By adopting the above scheme, after one of the fixed threads is locked in the circular socket, the second stud is screwed downward on the threaded connecting column through the second stud which is split from the first stud. At this time, during the downward movement of the second stud, the clamping strip continuously approaches the hemispherical protrusion, and the inclined surface of the lower surface of one end of the clamping strip and the hemispherical protrusion squeeze each other, and move the clamping strip toward another adjacent second stud until it is just engaged with the annular groove, thereby improving the stability of the fixing device when locking the bone plate. In addition, by limiting the distance between the lower surface of the clamping strip and the lower surface of the second stud and the thickness of the threaded connecting column, the clamping strip can contact the hemispherical protrusion before the second stud is screwed downward on the threaded connecting column to the end of the stroke, so as to ensure that the clamping strip can cooperate with the hemispherical protrusion and move to the right during the downward screwing of the second stud.

[0013] In one embodiment of the present application, a columnar slide extending radially along the second stud is provided inside, a supporting piece is provided inside the columnar slide, and an annular sealing ring arranged circumferentially along the hemispherical protrusion is provided on the upper surface of the second stud. When the second stud thread is screwed onto the threaded connecting column, the volume of the threaded cavity is compressed to drive the supporting piece to approach the second threaded hole and to come into contact with the inner wall of the second threaded hole.

[0014] By adopting the above scheme, the second stud is screwed on the threaded connecting column to drive the locking member to move. At the same time, an annular sealing ring is provided to compress the volume inside the threaded cavity while generating pressure on the supporting member, and drive one end of the supporting member to press against the inner wall of the second threaded hole, thereby further improving the clamping stability of the second stud when it is screwed inside the second threaded hole.

[0015] In one embodiment of the present application, the abutment member comprises: A supporting rod, the supporting rod is arranged inside the columnar slide and extends along the length direction of the columnar slide, one end of the supporting rod is fixedly connected to a moving block, and the moving block is slidably connected to the inside of the columnar slide; The piston block is fixedly assembled on an end surface of the moving block close to the threaded connection column.

[0016] By adopting the above scheme, when the volume inside the threaded cavity is compressed, pressure is generated on the piston block through compressed air, the piston block moves inside the columnar cavity, and drives the other end of the supporting rod to press against the inner wall of the second threaded hole. The reaction force can generate lateral pressure on the second stud to improve the stability of the second stud during assembly.

[0017] In one embodiment of the present application, an annular cavity is provided inside the bone plate below the first threaded hole, a threaded piston cavity is coaxially provided inside the second stud and the first stud, a piston column is threadedly connected inside the threaded piston cavity, and locking parts are provided on both sides of the top of the screw part, and the locking parts can be pushed by the piston column and engage with the annular cavity.

[0018] By adopting the above scheme and setting a threaded piston cavity, after fixing two pairs of fixing screws on the bone plate, the piston column can be screwed into the threaded piston cavity by rotating the piston column, thereby squeezing the air inside the threaded piston cavity and using air pressure to push the engaging part, so that the engaging part engages with the annular cavity, so that after the fixing screws are screwed into the circular socket, the two fixing screws can further achieve interlocking, thereby reducing the possibility of loosening of the fixing screws.

[0019] In one embodiment of the present application, a piston member is disposed outside the piston column, and the piston member includes a plurality of rubber sealing rings spaced apart along the piston column, and the diameter of the rubber sealing ring is greater than the diameter of the threaded piston cavity.

[0020] By adopting the above scheme, by setting the rubber sealing ring on the piston part, after the piston part is screwed into the threaded piston cavity, the rubber sealing ring and the threaded piston cavity have an interference fit, so that the piston part can be firmly fixed in the threaded piston cavity while improving the sealing performance of the piston cavity.

[0021] In one embodiment of the present application, the engaging member comprises: The clamping block has slideways on both sides of the top of the screw part, and the clamping block is slidably connected to the inside of the slideway along the radial direction of the screw part.

[0022] By adopting the above scheme, a locking block is set and the locking block is slidably connected to the slideways on both sides of the top of the screw part, so that the piston column can compress the space inside the threaded piston cavity when it moves downward along the threaded piston cavity, so that the locking block is squeezed toward the inside of the annular cavity by air pressure, so that the interlocking between the two fixing screws is achieved by the locking between the locking block and the annular cavity. When the fixing screw needs to be removed, the piston column is rotated in the opposite direction until negative pressure is formed inside the threaded piston cavity, and the negative pressure difference is used to drive the locking block to retract into the inside of the screw part to facilitate the subsequent removal of the fixing screw.

[0023] In one embodiment of the present application, the engaging member comprises: A fixing ring, wherein circular holes are provided on both sides of the top of the screw part, and the fixing ring is fixedly assembled inside the circular holes; An elastic rubber pad is arranged on the inner wall of the fixing ring.

[0024] By adopting the above scheme, when the piston chamber is screwed downward along the threaded piston chamber, the space inside the threaded piston chamber is compressed, so that the elastic rubber pad is squeezed by air pressure, causing it to deform and protrude in the direction of the annular cavity. The part of the elastic rubber pad that protrudes and extends into the interior of the annular cavity is utilized to improve the stability of the two fixing screws when they are screwed into the circular socket.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: by setting two circular holes and two fastening screws, the two fastening screws are respectively inserted into the two circular holes, so that when the two fastening screws are screwed into the circular holes and the bone plate is fastened, a mutual squeezing force is formed between the two fastening screws, thereby increasing the lateral interaction force, making the locking between the fastening screws and the circular holes tighter, and improving the fixing stability of the fastening screws.

[0026] By providing the first threaded hole, the second threaded hole, the first stud and the second stud, when the fastening screw is screwed into the circular socket, the first stud and the second stud are screwed into the first threaded hole and the second threaded hole respectively, thereby further improving the fastening ability of the fastening screw and utilizing the difference in diameter between the first stud and the second stud to offset part of the stress.

[0027] By setting a locking piece and utilizing the cooperation between the clamping strip and the hemispherical protrusion, when the second stud is screwed onto the top of the threaded connecting column, the hemispherical protrusion can squeeze the clamping strip. Under the squeezing force, the clamping strip moves toward the annular groove of the other second stud and engages with it, thereby further improving the fixation stability between the fastening screw and the bone plate.

[0028] By setting a piston column and moving it along the inside of the threaded piston cavity, the piston column can squeeze the space inside the threaded piston cavity, thereby increasing the pressure inside the threaded piston cavity. The pressure acts on the locking block, thereby driving the locking block to move into the annular cavity, thereby improving the locking tightness between the fastening screw and the bone plate. Similarly, an elastic rubber pad can also be set, and the pressure acts on the elastic rubber pad to cause it to deform and protrude and extend into the annular cavity, thereby achieving the purpose of improving the locking tightness between the fastening screw and the bone plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a front view of a locking metal bone plate provided in the first embodiment of the present application; Figure 2 is a front cross-sectional view of a locking metal bone plate fixing screw provided in the first embodiment of the present application; Figure 3 is a front cross-sectional view of a circular socket of a locking metal bone plate provided in the first embodiment of the present application; Figure 4 is a front cross-sectional view of the locking metal bone plate clamping strip provided in the first embodiment of the present application when it is not clamped into the annular cavity; Figure 5 It is a front cross-sectional view of the locking metal bone plate clip provided in the first embodiment of the present application when it is inserted into the annular cavity; Figure 6 is a front cross-sectional view of a locking metal bone plate retaining member provided in a second embodiment of the present application; Figure 7 This is a front cross-sectional view of the locking metal bone plate support rod provided in the second embodiment of the present application Figure 8 It is a front view of a piston column of a locking metal bone plate provided in a third embodiment of the present application; Fig. 9 is a front cross-sectional view of a locking metal bone plate engaging block provided in a third embodiment of the present application; Fig.10 is a front cross-sectional view of a locking metal bone plate fixing ring provided in a fourth embodiment of the present application; Fig.11 This is a front view of the elastic rubber pad of the locking metal bone plate provided in the fourth embodiment of the present application when it is raised.

[0030] Description of the reference numerals: 1. bone plate; 11. fixing hole; 111. circular jack; 1111. cylindrical through hole; 1112. first threaded hole; 1113. second threaded hole; 12. annular cavity; 2. fixing member; 21. fixing screw; 211. screw portion; 212. first stud; 213. second stud; 214. threaded piston cavity; 215. piston column; 216. engaging member; 2161. engaging block; 2162. fixing member Ring; 2163, elastic rubber pad; 217, piston member; 2171, rubber sealing ring; 218, abutment; 2181, abutment rod; 2182, moving block; 2183, piston block; 22, locking member; 221, threaded connecting column; 222, threaded cavity; 223, strip slide; 224, clamping strip; 2241, inclined plane; 2242, matching inclined plane; 225, hemispherical protrusion; 226, annular groove; 3, skeleton. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-Figure 11 The locking metal bone plate provided in the present application is described in further detail.

[0032] Example 1, please refer to Figure 1 The locking metal bone plate provided in the embodiment of the present application includes: a bone plate 1 and a fixing member 2.

[0033] The bone plate 1 is provided with a plurality of groups of fixing holes 11, each group of the fixing holes 11 comprises two circular plug holes 111 with tangent edges; The fixing member 2 is provided with multiple groups, and corresponds to the multiple groups of fixing holes 11 one by one. Each group of the fixing members 2 includes two fixing screws 21. One end of the two fixing screws 21 is spirally connected to the two circular sockets 111 one by one, and is screwed into the bone 3, and the other ends are in conflict with each other. One of the fixing screws 21 is provided with a locking member 22 inside, and the other fixing screw 21 is provided with an annular groove 226 that can be engaged with the locking member 22 outside. When the two fixing screws 21 fix the bone plate 1 on the bone 3, the two fixing screws 21 are interlocked through the engagement between the locking member 22 and the annular groove 226. By arranging two fixing screws 21 in conflict with each other inside each group of the fixing members 2, the two fixing screws 21 squeeze each other when fixing the bone plate 1 on the bone 3, thereby generating lateral pressure, so that the two fixing screws 21 will not loosen when tightened.

[0034] See also Figure 1 and Figure 3The circular socket 111 includes: a cylindrical through hole 1111, a first threaded hole 1112 and a second threaded hole 1113. The cylindrical through hole 1111 is arranged on the surface of the bone plate 1, the first threaded hole 1112 is coaxially arranged outside the cylindrical through hole 1111 and communicated with the cylindrical through hole 1111, the second threaded hole 1113 is coaxially arranged above the first threaded hole 1112, the diameter of the second threaded hole 1113 is larger than the first threaded hole 1112, and is communicated with the cylindrical through hole 1111. By arranging two first threaded holes 1112 and second threaded holes 1113 arranged up and down, the fixing screw 21 can be subjected to double tightening force when fixed inside the first threaded hole 1112 and the second threaded hole 1113, thereby further improving the tightening ability of the fixing screw 21.

[0035] The central axis of the circular insertion hole 111 is perpendicular to the surface of the bone plate 1 .

[0036] See also Figure 2 and Figure 3 The fixing screw 21 includes: a screw part 211, a first stud 212 and a second stud 213. One end of the screw part 211 passes through the columnar through hole 1111 and is screwed into the bone 3. The first stud 212 is coaxially fixedly assembled above the screw part 211 and is threadedly connected to the first threaded hole 1112. The second stud 213 is coaxially fixedly assembled above the first stud 212 and is threadedly connected to the second threaded hole 1113. By arranging the first stud 212 and the second stud 213 corresponding to the first threaded hole 1112 and the second threaded hole 1113, the first stud 212 and the second stud 213 are screwed into the corresponding first threaded hole 1112 and the second threaded hole 1113 respectively when they are synchronously screwed into the circular socket 111, thereby improving the fastening ability of the fixing screw 21 to the bone plate 1 while offsetting part of the stress.

[0037] See also Figure 4 and Figure 5, the locking member 22 includes: a threaded connection post 221 coaxially disposed on the first stud 212 of one of the fixing screws 21. A threaded cavity 222 is coaxially provided inside the second stud 213 of one of the fixing screws 21 and is threadedly connected to the threaded connection post 221 through the threaded cavity 222. A strip-shaped slideway 223 extending along the radial direction of the second stud 213 itself is provided inside the second stud 213. The strip-shaped slideway 223 is disposed on the side of the threaded cavity 222. A clamping strip 224 is provided inside the strip-shaped slideway 223. A hemispherical protrusion 225 is coaxially disposed at the top end of the threaded connection post 221. An inclined surface 2241 adapted to the hemispherical protrusion 225 is provided on the lower surface of one end of the clamping strip 224 close to the threaded cavity 222. A mating inclined surface 2242 is provided on the upper surface of the other end of the clamping strip 224 to avoid spatial interference when the other end of the clamping strip 224 is inserted into the annular clamping groove 226. The annular clamping groove 226 is provided on the other fixing screw 21 and is circumferentially disposed on the side of the second stud 213 of the other fixing screw 21. The distance h between the lower surface of the clamping strip 224 and the lower surface of the second stud 213 and the thickness d of the threaded connection post 221 satisfy: h < d. By providing the clamping strip 224 inside one of the second studs 213 of the paired fixing screws 21, when the second stud 213 is screwed downward into the first stud 212, the clamping strip 224 can move toward the direction of the other second stud 213, so that the mutual clamping between the two fixing screws 21 is realized by using the clamping strip 224, and the fastening ability of the two fixing screws 21 is improved.

[0038] Embodiment 2. Embodiment 2 has the same basic structure as Embodiment 1, and the difference lies in: Please refer to Figure 6 , a columnar slideway 219 extending along the radial direction of the second stud 213 itself is opened inside the second stud 213. A holding member 218 is provided inside the columnar slideway 219. An annular sealing ring 210 circumferentially disposed along the hemispherical protrusion 225 is provided on the upper surface of the second stud 213. When the second stud 213 is threadedly engaged with the threaded connection post 221, the volume of the threaded cavity 222 is compressed to drive the holding member 218 close to the second threaded hole 1113 and抵触 with the inner wall of the second threaded hole 1113.

[0039] Please refer to Figure 7 , the holding member 218 includes: a holding rod 2181 and a piston block 2183. The holding rod 2181 is disposed inside the columnar slideway 219 and extends along the length direction of the columnar slideway 219. A moving block 2182 is fixedly connected to one end of the holding rod 2181. The moving block 2182 is slidably connected inside the columnar slideway 219. The piston block 2183 is fixedly assembled on the end face of the moving block 2182 close to the threaded connection post 221.

[0040] Embodiment 3: Embodiment 3 has the same basic structure as Embodiment 1, except that: See also Figure 8 and Fig. 9 An annular cavity 12 is provided inside the bone plate 1 below the first threaded hole 1112, and a threaded piston cavity 214 is coaxially opened inside the second stud 213 and the first stud 212, and a piston column 215 is threadedly connected inside the threaded piston cavity 214, and clamping parts 216 are provided on both sides of the top of the screw part 211. The clamping parts 216 can be pushed by the piston column 215 and engage with the annular cavity 12. When the piston column 215 is screwed in and moved along the threaded piston cavity 214, the piston column 215 can push the clamping parts 216 to engage with the annular cavity 12, thereby further improving the clamping ability of the bone plate 1.

[0041] See also Figure 8 and Fig. 9 A piston member 217 is arranged outside the piston column 215, and the piston member 217 includes a plurality of rubber sealing rings 2171 arranged at intervals along the piston column 215. The diameter of the rubber sealing ring 2171 is larger than the diameter of the threaded piston cavity 214. By arranging the rubber sealing ring 2171 that is interference fit with the threaded piston cavity 214, the sealing performance of the piston column 215 can be ensured when it moves inside the threaded piston cavity 214.

[0042] See also Fig. 9 The engaging member 216 includes an engaging block 2161 , and slideways are provided on both sides of the top of the screw portion 211 . The engaging block 2161 is slidably connected to the inside of the slideway along the radial direction of the screw portion 211 .

[0043] Embodiment 4: Embodiment 4 has the same basic structure as Embodiment 3, except that: See also Fig.11 The engaging member 216 includes a fixing ring 2162 and an elastic rubber pad 2163. Circular holes are provided on both sides of the top of the screw portion 211. The fixing ring 2162 is coaxially fixedly assembled inside the circular hole. The elastic rubber pad 2163 is arranged on the inner wall of the fixing ring 2162. When the piston column 215 moves along the inside of the threaded piston cavity 214, the elastic rubber pad 2163 is exerted with pressure by compressing the space and utilizing air pressure. The elastic rubber pad 2163 can be deformed under the action of pressure, and then protrude and extend into the annular cavity 12, thereby achieving the purpose of improving the fastening ability between the fixing screw 21 and the bone plate 1.

[0044] In summary, when the bone plate 1 needs to be fixed to the fracture site, the fixing members 2 of different groups are fixed to the two sides of the fracture site, the fastening screws are inserted into the circular insertion holes 111, and the bone plate 1 is fastened to the fracture site through the threaded connection between the first threaded hole 1112 and the first stud 212 and the second threaded hole 1113 and the second stud 213. At the same time, the two second studs 213 are in contact with each other, which can provide a side squeezing force to the two fastening screws, further improving the fastening ability of the fastening screws. A radially slidable clamping strip 224 may be provided inside the second stud 213. After the two fastening screws are fastened inside the circular insertion hole 111, the split second stud 213 is screwed onto the first stud 212. The hemispherical protrusion 225 on the first stud 212 squeezes the inclined surface 2241 of the clamping strip 224, so that when the second stud 213 is completely screwed onto the first stud 212, the clamping strip 224 can just be inserted into the annular clamping groove 226 of the second stud 213 adjacent thereto. At the same time, when the second stud 213 is screwed downward, the air inside the threaded cavity 222 can be squeezed to drive the abutting piece to move toward the inner wall of the second threaded hole 1113 and abut against the inner wall of the second threaded hole 1113. The reaction force is used to provide lateral pressure to the second stud, so as to further improve the locking ability between the two fastening screws. An annular cavity 12 can also be set inside the bone plate 1, and a threaded piston cavity 214 can be set on the second stud 213 and the first stud 212. By screwing the piston column 215 into the threaded piston cavity 214, the pressure inside the threaded piston is increased. The pressure drives the locking piece 216 to move toward the inside of the annular cavity 12, thereby achieving further locking between the fastening screw and the bone plate 1, thereby improving the fixation stability of the bone plate 1.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A locking metal bone plate, characterized in that: include: A bone fracture plate (1), wherein the bone fracture plate (1) is provided with a plurality of groups of fixing holes (11), each group of the fixing holes (11) comprising two circular insertion holes (111) with tangent edges; A fixing member (2), wherein the fixing member (2) is provided with a plurality of groups and corresponds one-to-one with the plurality of groups of fixing holes (11), each group of the fixing member (2) comprises two fixing screws (21), one end of the two fixing screws (21) is spirally connected to the two circular plug holes (111) in a one-to-one correspondence and is screwed into the bone, and the other ends thereof contact each other, one of the fixing screws (21) is provided with a locking member (22) inside, and the other fixing screw (21) is provided with an annular groove (226) that can be engaged with the locking member (22) outside, and the two fixing screws (21) fix the bone plate (1) on the bone, and the two fixing screws (21) are interlocked through the engagement between the locking member (22) and the annular groove (226).

2. The locking metal bone plate according to claim 1, characterized in that: The circular socket (111) comprises: A columnar through hole (1111), wherein the columnar through hole (1111) is arranged on the surface of the bone fracture plate (1); A first threaded hole (1112), the first threaded hole (1112) being coaxially arranged outside the columnar through hole (1111) and communicating with the columnar through hole (1111); A second threaded hole (1113), wherein the second threaded hole (1113) is coaxially arranged above the first threaded hole (1112), the diameter of the second threaded hole (1113) is larger than that of the first threaded hole (1112), and the second threaded hole (1113) is connected to the columnar through hole (1111).

3. The locking metal bone plate according to claim 2, characterized in that: The fixing screw (21) comprises: A screw portion (211), one end of which passes through the columnar through hole (1111) and is screwed into the bone; A first stud (212), the first stud (212) is coaxially fixedly assembled above the screw portion (211) and is threadedly connected to the first threaded hole (1112); A second stud (213), wherein the second stud (213) is coaxially fixedly assembled above the first stud (212) and is threadedly connected to the second threaded hole (1113).

4. The locking metal bone plate according to claim 3, characterized in that: The locking member (22) comprises: A threaded connection column (221), wherein the threaded connection column (221) is coaxially arranged on a first stud (212) of one of the fixing screws (21), wherein a second stud (213) of one of the fixing screws (21) is coaxially provided with a threaded cavity (222) inside and is threadedly connected to the threaded connection column (221) through the threaded cavity (222), wherein the second stud (213) is provided with a strip slideway (223) extending in its radial direction inside, wherein the strip slideway (223) is arranged in the threaded cavity The strip-shaped slideway (223) is provided with a clamping strip (224) on the side of the cavity (222), a hemispherical protrusion (225) is coaxially arranged on the top of the threaded connection column (221), a lower surface of one end of the clamping strip (224) close to the threaded cavity (222) is provided with an inclined surface (2241) adapted to the hemispherical protrusion (225), and a matching inclined surface (2242) is provided on the upper surface of the other end of the clamping strip (224) to avoid spatial interference when the other end of the clamping strip (224) is inserted into the annular clamping groove (226); The annular groove (226) is arranged on the other fixing screw (21) and is circumferentially arranged on the side of the second stud (213) of the other fixing screw (21); The distance h between the lower surface of the clamping strip (224) and the lower surface of the second stud (213) and the thickness d of the threaded connection column (221) satisfy: h <d。 5. The locking metal bone plate according to claim 4, characterized in that: The second stud (213) has a columnar slideway (219) extending radially therefrom, and a supporting member (218) is provided inside the columnar slideway (219). The upper surface of the second stud (213) is provided with an annular sealing ring (210) circumferentially arranged along the hemispherical protrusion (225). When the second stud (213) is threadedly screwed onto the threaded connecting column (221), the volume of the threaded cavity (222) is compressed to drive the supporting member (218) to approach the second threaded hole (1113) and to contact the inner wall of the second threaded hole (1113).

6. The locking metal bone plate according to claim 5, characterized in that: The abutment member (218) comprises: A supporting rod (2181), the supporting rod (2181) is arranged inside the columnar slideway (219) and extends along the length direction of the columnar slideway (219), one end of the supporting rod (2181) is fixedly connected to a moving block (2182), and the moving block (2182) is slidably connected inside the columnar slideway (219); The piston block (2183) is fixedly mounted on an end surface of the moving block (2182) close to the threaded connection column (221).

7. The locking metal bone plate according to claim 3, characterized in that: An annular cavity (12) is provided inside the bone plate (1) below the first threaded hole (1112); a threaded piston cavity (214) is coaxially provided inside the second stud (213) and the first stud (212); a piston column (215) is threadedly connected inside the threaded piston cavity (214); and engaging parts (216) are provided on both sides of the top of the screw part (211); the engaging parts (216) can be pushed by the piston column (215) and engage with the annular cavity (12).

8. The locking metal bone plate according to claim 7, characterized in that: A piston member (217) is disposed outside the piston column (215), and the piston member (217) includes a plurality of rubber sealing rings (2171) spaced apart along the piston column (215), wherein the diameter of the rubber sealing rings (2171) is greater than the diameter of the threaded piston cavity (214).

9. The locking metal bone plate according to claim 7, characterized in that: The engaging member (216) comprises: A snap-fit ​​block (2161) is provided with slideways on both sides of the top of the screw portion (211), and the snap-fit ​​block (2161) is slidably connected to the inside of the slideways along the radial direction of the screw portion (211).

10. The locking metal bone plate according to claim 9, characterized in that: The engaging member (216) comprises: A fixing ring (2162), wherein circular holes are provided on both sides of the top of the screw portion (211), and the fixing ring (2162) is coaxially fixedly assembled inside the circular holes; An elastic rubber pad (2163), wherein the elastic rubber pad (2163) is arranged on the inner wall of the fixing ring (2162).

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