CN111449743A - Assembled pressurization bone fracture plate - Google Patents

Abstract

The invention relates to an assembled compression bone fracture plate, which belongs to the technical field of compression locking bone fracture plates and at least comprises two combined plates provided with locking holes, wherein the end parts, close to each other, of the two adjacent combined plates are jointly connected with a connecting assembly; the connecting assembly comprises a pressurizing and propelling plate and a pressurizing and propelling groove, the pressurizing and propelling plate and the pressurizing and propelling groove are respectively and fixedly connected to one end, close to each other, of each two adjacent combined plates, when the pressurizing and propelling plate is spliced with the pressurizing and propelling groove, the end area of one side, facing the pressurizing and propelling groove, of the pressurizing and propelling plate in the thickness direction is smaller than that of the other side, facing away from the pressurizing and propelling groove, of the pressurizing and propelling plate, and the two end faces of the pressurizing and propelling plate in the thickness direction are; the pressurizing and propelling plate is provided with a first positioning hole, and the pressurizing and propelling groove is provided with a second positioning hole. The invention can provide the pressurizing power which is larger than that of the existing bone fracture plate according to the difference of the contact ratio of the connecting component, and is convenient for selecting different pressurizing powers according to the condition of a patient in clinical treatment.

Description

Assembled pressurization bone fracture plate

Technical Field

The invention relates to the technical field of pressurizing and locking bone fracture plates, in particular to an assembled pressurizing bone fracture plate.

Background

At present, a bone fracture plate is one of the main fixing devices for treating long tubular skeletal fractures of limbs, and a conventional bone fracture plate, such as the bone fracture plate disclosed in chinese patent publication No. CN1149246A, is generally a strip-shaped plate or a special-shaped plate made of titanium alloy, cobalt-chromium alloy, or stainless steel material and having a certain thickness, and screw holes are uniformly distributed in the center of the bone fracture plate, and screws are driven into the screw holes to perform a compression fixing effect on broken bones of a patient.

However, clinical practice proves that for osteoporotic fractures or comminuted fractures, the conventional bone fracture plate is difficult to provide sufficient stability for fracture healing at the fracture part, so that the conventional steel plates are used in a large number when fixing the fractures, and pain of patients in treatment is easy to increase or decrease.

For example, Chinese patent with publication No. CN206924105U discloses a DHS locking bone plate with a matched spiral blade, which combines a dynamic pressurizing unit and a locking screw hole through a L CP composite hole arranged on a steel plate of the DHS bone plate, and can freely select to pressurize or lock.

However, the conventional locking and pressurizing bone plate with L CP combination holes has the problem that once the bone plate is formed, the L CP combination holes are fixed in size and position, and when the bone plate is pressurized to bone, the pressure applied to the broken bone by the bone plate can be adjusted only through the inclination angle of the screw on the bone plate, so that the pressure applied to the broken bone by the bone plate is limited, and the locking and pressurizing bone plate cannot meet various requirements of clinical fracture treatment.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an assembled pressurizing bone fracture plate, which is characterized in that the traditional pressurizing locking bone fracture plate is arranged into a combined type, and the pressurizing range of the bone fracture plate can be widened according to the difference of the overlapping areas of the combined parts, so that the effect of pressurizing the fracture part to a greater degree in clinic is facilitated.

The above object of the present invention is achieved by the following technical solutions:

an assembled compression bone fracture plate at least comprises two combined plates, wherein each combined plate is provided with a locking hole, the end parts, close to each other, of the two adjacent combined plates are connected with a connecting assembly together, and the two adjacent combined plates are combined through the connecting assembly to form a bone fracture plate body; the connecting assembly comprises a pressurizing and propelling plate and a pressurizing and propelling groove which are spliced up and down, the pressurizing and propelling plate and the pressurizing and propelling groove are respectively and fixedly connected to one end, close to each other, of each two adjacent combined plates, when the pressurizing and propelling plate is spliced with the pressurizing and propelling groove, the end area of one side, facing the pressurizing and propelling groove, of the pressurizing and propelling plate in the thickness direction is smaller than the end area of one side, facing away from the pressurizing and propelling groove, of the pressurizing and propelling plate, and the two end surfaces of the pressurizing and propelling plate in the thickness direction are connected through inclined planes; one end of the pressurizing and propelling plate, which is far away from the combined plate fixed with the pressurizing and propelling plate, is linear, and the groove wall of the pressurizing and propelling groove is attached to the outer periphery of the pressurizing and propelling plate; the pressurizing and pushing plate is provided with a first positioning hole, the pressurizing and pushing groove is provided with a second positioning hole, when the bone fracture plate body is fixed with a bone, the first positioning hole is arranged close to the bone, the orthographic projection of the first positioning hole is positioned in the second positioning hole, and the aperture of the second positioning hole is gradually reduced along the direction close to the first positioning hole.

When the compression propulsion plate is pushed into the compression propulsion groove, screws are screwed into the first positioning hole and the second positioning hole simultaneously to position the pushing position of the compression propulsion plate in the compression propulsion groove so as to provide stable compression power for the fracture part, and compared with the compression power provided for the fracture bone plate L CP combined hole on the eccentric screw of the cortical bone screw in the prior art, the compression propulsion plate in the scheme is deeper into the compression propulsion groove, and can provide larger compression power for the fracture part, so that the medical staff can easily perform larger compression on the fracture part during clinical treatment, and the compression propulsion plate can be easily inserted into the compression propulsion groove and can not be easily pressed into the compression propulsion groove when the compression propulsion plate is pushed into the compression propulsion groove.

The present invention in a preferred example may be further configured to: when the pressurizing and pushing plate is inserted into the pressurizing and pushing groove, the end surfaces of the pressurizing and pushing plate, which are far away from the pressurizing and pushing groove, are flush with the two end surfaces of the bone fracture plate body in the thickness direction respectively.

Through adopting above-mentioned technical scheme for two terminal surfaces of coaptation board body thickness direction are level and smooth, when reducing the subcutaneous coaptation, the condition of dragging of coaptation board body to patient's soft tissue.

The present invention in a preferred example may be further configured to: the surface of the pressurizing and propelling plate, which is abutted to the pressurizing and propelling groove, is a concave-convex surface.

Through adopting above-mentioned technical scheme, the setting of corrugated surface has increased the coefficient of friction between pressurization propulsion board and the pressurization propulsion groove for the pressurization propulsion board receives the resistance when advancing along the pressurization propulsion groove, can control the pressurization power of compoboard, thereby reduces the too big condition emergence of once pressurization. Meanwhile, the friction force between the pressurizing and propelling plate and the pressurizing and propelling groove is increased, and the connection stability between the pressurizing and propelling plate and the pressurizing and propelling groove can be improved.

The present invention in a preferred example may be further configured to: the surface of the pressurizing and propelling plate, which is abutted to the pressurizing and propelling groove, is provided with a first propelling rack, a plurality of first propelling racks are arranged in parallel along the length direction of the combined plate fixed with the pressurizing and propelling plate, and the first propelling racks incline towards the direction away from the combined plate close to the first propelling racks towards the surface of the combined plate close to the first propelling racks; and a plurality of second propelling racks meshed with the first propelling racks are arranged in the pressurizing propelling groove, and the second propelling racks incline towards the direction away from the combined plate close to the second propelling racks towards the combined plate close to the second propelling racks.

Through adopting above-mentioned technical scheme, first impel the rack and the second impels the rack makes the butt face that pressurization impels board and pressurization impel the groove can form the corrugated surface, impels the compoboard under the meshing circumstances of first impel rack and second impel the rack, can make two adjacent compoboards along the number of first impel rack and second impel the rack each other near to play the effect of controlling the pressurization power of compoboard.

The present invention in a preferred example may be further configured to: the end of the pressurizing and propelling groove far away from the combined plate fixed with the pressurizing and propelling groove is linear, and the end of the combined plate fixed with the pressurizing and propelling plate is square and matched with the end part of the pressurizing and propelling groove in shape.

By adopting the technical scheme, the combined plate and the pressurizing propulsion groove can be processed more conveniently.

The present invention in a preferred example may be further configured to: the combination board is provided with a destressing groove close to the connecting component.

Due to the arrangement of the connecting assembly, the shape and the size of the bone fracture plate body are changed sharply at the connecting assembly, stress is easy to concentrate at the connecting assembly during bone fracture, and by adopting the technical scheme, when a patient moves, the stress removing grooves are easy to disperse and concentrate at the stress at the connecting assembly, the condition that fatigue cracks or fractures are generated at the connecting assembly is reduced, and the pressurizing stability of the bone fracture plate in the scheme is easy to maintain.

The present invention in a preferred example may be further configured to: the surface of the combination board is sunken to form a stress dispersion part, and the stress dispersion part extends along the length direction of the combination board.

Through adopting above-mentioned technical scheme, through the setting of the portion that disperses of stress, can further play the dispersion effect to the stress of coupling assembling department.

The present invention in a preferred example may be further configured to: the end part of the combined plate far away from the connecting component is provided with a guide part, and the width of the guide part is gradually reduced along the length direction of the combined plate.

Through adopting above-mentioned technical scheme, when the compoboard inserts the patient subcutaneous from the guide part, the guide part easily struts the subcutaneous soft tissue of patient gradually, reduces the plate body and inserts the process of patient subcutaneous and to the misery that the patient caused.

The present invention in a preferred example may be further configured to: the guide portion is bent toward the stress dispersion portion to form a relief portion.

By adopting the technical scheme, when the bone fracture plate is fixed on a broken bone, the pressure reduction part can reduce the contact area of the combined plate and the periosteum, thereby reducing the oppression of the combined plate on the periosteum and providing support for the blood supply passage of the periosteum and soft tissues.

In summary, the invention includes at least one of the following beneficial technical effects:

1. through the arrangement of the combination plate, the pressurizing propulsion groove, the first positioning hole and the second positioning hole, not only can the fractured bones be easily pressurized to different degrees by medical staff according to the fracture severity of a patient during clinical treatment, but also the pressurizing power which is larger than that of the traditional pressurizing locking bone fracture plate can be provided for the fractured bones, so that the fracture parts of the patient can be conveniently pressurized to a larger degree by the medical staff during clinical treatment;

2. the arrangement of the first pushing rack and the second pushing rack is easy to control the pressurizing power of the combined plate, so that the situation of overlarge one-time pressurization is reduced;

3. through the arrangement of the stress relief groove and the stress dispersion part, the stress concentrated on the connecting component is easily dispersed, and the fatigue crack or the fracture of the connecting component is reduced.

Drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

Fig. 2 is an exploded view of the front structure of the connecting member in example 1.

Fig. 3 is an exploded view of the back structure of the connecting member used in example 1.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 is an exploded view for embodying the overall structure of embodiment 2.

Fig. 6 is an exploded view for embodying the entire structure of embodiment 3, mainly showing the front structure of the connecting assembly.

Fig. 7 is an exploded view for embodying the entire structure of embodiment 3, mainly showing the connecting-member back face structure.

Fig. 8 is an exploded view for embodying the entire structure of embodiment 4.

Fig. 9 is a schematic structural view of a third combination plate in embodiment 4.

Fig. 10 is an exploded view for embodying the entire structure of embodiment 5.

Fig. 11 is an exploded view for embodying the entire structure of embodiment 6.

Fig. 12 is a schematic structural view of a fourth combination plate in embodiment 6.

Fig. 13 is an exploded view for embodying the entire structure of embodiment 7.

In the figure, 1, a combination board, 11, a first combination board, 111, a pressurizing and pushing board, 1111, a first positioning hole, 1112, a first pushing rack, 12, a second combination board, 121, a pressurizing and pushing groove, 1211, a second positioning hole, 1212, a second pushing rack, 2, a connecting component, 3, a slope, 4, a guide part, 41, a pressure reducing part, 5, a stress relieving groove, 6, a stress dispersing part, 7, L CP combining holes, 71, a power pressurizing hole, 72, a locking screw hole, 8, a third combination board, 9, and a fourth combination board.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

referring to fig. 1, for the assembled pressurization coaptation board that this embodiment disclosed, including two compoboards 1, be first compoboard 11 and second compoboard 12 respectively, the tip that first compoboard 11 and second compoboard 12 are close to each other is connected with coupling assembling 2 jointly, and first compoboard 11 and second compoboard 12 pass through coupling assembling 2 interconnect, form the coaptation board body.

Referring to fig. 2, the connecting assembly 2 includes a pressing pushing plate 111 and a pressing pushing groove 121 for vertically splicing, wherein the pressing pushing plate 111 is integrally formed at one end of the first combination plate 11 in the length direction along the length direction of the first combination plate 11, the pressing pushing plate 111 is disposed near one side of the first combination plate 11 in the thickness direction, and one surface of the pressing pushing plate 111 in the thickness direction is flush with the end surface of one end of the first combination plate 11 in the thickness direction. A first positioning hole 1111 having a screw thread (not shown) formed on an inner wall thereof is penetrated through the pressurizing propulsion plate 111 in a thickness direction thereof, and the first positioning hole 1111 has a circular shape.

Referring to fig. 2, the pressing and pushing groove 121 is integrally formed at one end of the second combination board 12 in the length direction of the second combination board 12, the pressing and pushing groove 121 is disposed near one side of the second combination board 12 in the thickness direction, and one surface of the pressing and pushing groove 121 in the thickness direction is flush with the end surface of one end of the second combination board 12 in the thickness direction. After the pressurizing propulsion plate 111 and the pressurizing propulsion groove 121 are vertically spliced, the surfaces of two end surfaces of the bone fracture plate body in the thickness direction are smooth. A second positioning hole 1211 for aligning with the first positioning hole 1111 is formed through the pressing groove 121 in a thickness direction thereof, and the second positioning hole 1211 is a waist-shaped hole extending in an axial direction of the second combination plate 12.

Referring to fig. 2, when the bone fracture plate body is fixed to the fracture site, the pressurizing propulsion plate 111 is inserted into the pressurizing propulsion groove 121, the first positioning hole 1111 is disposed near the bone, the orthographic projection of the first positioning hole 1111 is disposed in the second positioning hole 1211, the wall of the second positioning hole 1211 tapers in a concave arc shape along the direction near the first positioning hole 1111, the medical staff can use a screw to sequentially pass through the second positioning hole 1211 and the first positioning hole 1111, one side of the screw head near the screw rod is a hemisphere with a diameter tapering along the direction near the rod, so that the screw head can be tightly pressed against the inner wall of the second positioning hole 1211 to fix the two adjacent combination plates 1.

Referring to fig. 2, when the pressure feed plate 111 is positioned in the pressure feed groove 121, the area of the end of the pressure feed plate 111 facing the pressure feed groove 121 in the thickness direction is smaller than the area of the end facing away from the pressure feed groove 121, the two end faces of the pressure feed plate 111 in the thickness direction are connected by the inclined surface 3, and the groove walls on both sides of the pressure feed groove 121 in the width direction are attached to the inclined surface 3 of the pressure feed plate 111. When the pressing pushing plate 111 and the pressing pushing groove 121 are inserted in opposite positions, the pressing pushing plate 111 is easy to slide into the pressing pushing groove 121 along the inclined surface 3.

Referring to fig. 3, the end of the pressing and pushing plate 111 away from the first combined plate 11 fixed thereto is linear, and the groove wall of the pressing and pushing groove 121 is square in shape matching the outer edge of the pressing and pushing plate 111. The end of the pressing and pushing groove 121 far from the second combination board 12 fixed with the pressing and pushing groove is in a straight line shape, and the joint of the first combination board 11 and the pressing and pushing board 111 is in a square shape matched with the end of the pressing and pushing groove 121 (see fig. 2).

Referring to fig. 4, the first pushing rack 1112 is provided on the surface of the pressure pushing plate 111 in contact with the pressure pushing groove 121, and the first pushing rack 1112 may be provided on the surface of the pressure pushing plate 111 in contact with the groove bottom of the pressure pushing groove 121 in the thickness direction, on side surfaces (not shown) of the pressure pushing plate 111 in contact with the side walls of the pressure pushing groove 121 on both sides in the width direction, or on both the surface of the pressure pushing plate 111 in contact with the pressure pushing groove 121 in the thickness direction and the side surfaces (not shown). The first pushing rack 1112 is arranged in parallel in a plurality of strips along the length direction of the first combination plate 11, and the first pushing rack 1112 is inclined towards one surface of the pressurizing and propelling groove 121 spliced with the first pushing rack 1112 and away from the pressurizing and propelling groove 121 spliced with the first pushing rack 1112.

Referring to fig. 4, a plurality of second pushing racks 1212 engaged with the first pushing racks 1112 are disposed in the pressing pushing groove 121, the second pushing racks 1212 may be disposed at the groove bottom of the pressing pushing groove 121, may be disposed at inner sidewalls (not shown) of both sides of the pressing pushing groove 121 in the width direction, and may be disposed at the groove bottom and the inner sidewalls (not shown) of the pressing pushing groove 121 in the width direction, and the second pushing racks 1212 are inclined toward a surface of the pressing pushing plate 111 joined thereto, in a direction away from the pressing pushing plate 111 joined thereto.

Referring to fig. 4, in the process of inserting the pressurizing propulsion plate 111 into the pressurizing propulsion groove 121 and gradually pressurizing and propelling, the first propulsion rack 1112 and the second propulsion rack 1212 are easily propelled one by one, and the pressurizing power of the pressurizing propulsion plate 111 can be limited so as not to be too large for one pressurizing. The first 1112 and second 1212 pushing racks are 0.5 mm high, and when the plate is removed, the medical professional can slightly lift the pressing pushing plate 111 to disconnect the first 1112 and second 1212 pushing racks. The distance between two adjacent first pushing racks 1112 and the distance between two adjacent second pushing racks 1212 are both 0.06 mm, so that each time the bone fracture plate pushes one rack in a pressurizing manner, a pressurizing unit of 0.06 mm can be generated, and the assembled pressurizing and locking bone fracture plate in the embodiment can realize the micro-pressurizing effect.

Referring to fig. 3, the end portions of the first combination plate 11 and the second combination plate 12 far away from the combination structure are respectively integrally formed with a guide portion 4, and the width of the guide portion 4 is gradually reduced in an arc shape along the length direction of the bone fracture plate body, so that one end of the guide portion 4 far away from the combination plate 1 fixed with the guide portion is in an arc shape. Stress diffusion parts 6 are formed on the same end face of one end of the first combination plate 11 and the second combination plate 12 in the thickness direction in a concave mode, the stress diffusion parts 6 extend along the length direction of the bone fracture plate body, the stress diffusion parts 6 are located on two sides of the bone fracture plate body in the width direction, and the stress diffusion parts 6 on the two sides of the guide part 4 in the width direction are communicated with each other at the edge of the guide part 4 (see figure 2).

Referring to fig. 3, the guide portion 4 is formed with a relief portion 41 bent toward the stress diffusion portion 6 so as to reduce the compression of the bone plate body against the periosteum of the patient at the time of setting a bone.

Referring to fig. 3, the first combination plate 11 and the second combination plate 12 are respectively provided with a plurality of locking holes along the length direction thereof, the locking holes may be L CP coupling holes 7, or may be any hole type capable of allowing bolts to pass therethrough to fix the two combination plates 1 and the bone, the locking holes in this embodiment are preferably L CP coupling holes 7. L CP coupling holes 7 include power pressurizing holes 71 having unthreaded inner walls and locking screw holes 72 communicating with the power pressurizing holes 71 along the length direction of the combination plates 1, the inner walls of the locking screw holes 72 are threaded to connect locking screws to fix the combination plates 1 and the bone, the hole walls of the power pressurizing holes 71 are concave arc-shaped to eccentrically connect cortical bone screws to achieve the effect of the combination plates 1 and the bone, and the power pressurizing holes 71 on the first combination plate 11 are opposite to the power pressurizing holes 71 on the second combination plate 12, so that the bone fracture parts can be simultaneously pressed from the two combination plates 1 toward the connection assembly 2 during bone fracture.

The embodiment of the present invention is characterized in that when the combined compression locking bone fracture plate of the present embodiment is used to perform bone fracture on a fractured bone of a patient, an incision is made on soft tissue surrounding the fractured bone of the patient to the periosteum of the fractured bone according to the lengths of the first combination plate 11 and the second combination plate 12, the guide part 4 of one combination plate 1 is extended from the incision into the soft tissue and passes through the fractured bone, the combination plate 1 is locked to the bone under pressure through an L CP fastening hole 7 after reaching a desired position, one end of the other combination plate 1, which is far away from the guide part 4, is extended from the incision, the compression pushing plate 111 is inserted into the compression pushing groove 121, at this time, the first positioning hole is close to the bone, the combination plate 1, which is extended after being pushed by a resetting force required by the fractured bone of the patient, the depth of the compression pushing plate 111 in the compression pushing groove 121 is changed, so that the extended combination plate 1 can drive the fractured bone to be spliced to a correct resetting position, the bone is fixed by the first combination plate 1111 and the second combination plate 12 from top to the second positioning hole 12.

Example 2:

referring to fig. 5, the present embodiment is different from embodiment 1 in that a stress relief groove 5 is formed in the second combination plate 12 near the coupling member 2, and the stress relief groove 5 penetrates the second combination plate 12 in the thickness direction of the second combination plate 12. The stress relief grooves 5 are used to distribute stress concentrated at the joint of the first combination plate 11 and the second combination plate 12, and reduce the possibility of fracture from the joint of the first combination plate 11 and the second combination plate 12 when the bone plate body is fixed to a bone.

Example 3:

referring to fig. 6 and 7, the present embodiment is different from embodiment 1 in that the surface of the pressurizing and propelling plate 111 and the pressurizing and propelling groove 121 which are in contact with each other may be a smooth surface, or may be an uneven surface (not shown) which is manufactured by a processing process such as shot blasting, sand blasting, roll pressing, or oxidation and which can increase the frictional resistance when the pressurizing and propelling plate 111 is propelled along the pressurizing and propelling groove 121 and reduce the occurrence of excessive pressurization at one time during pressurizing and propelling.

Example 4:

referring to fig. 8, the present embodiment is different from embodiment 1 in that it includes three combination boards 1, which are a third combination board 8 and two first combination boards 11 of embodiment 1, and the two first combination boards 11 are combined at both ends of the third combination board 8 in the length direction.

Referring to fig. 8, the pressing grooves 121 of embodiment 1 are integrally formed at both ends of the third assemblable plate 8 in the longitudinal direction, and the pressing grooves 121 extend in the longitudinal direction of the third assemblable plate 8. Be fixed in the terminal surface of pressurization propulsion groove 121 thickness direction one end on the third compoboard 8 and the terminal surface parallel and level of 8 thickness direction one ends of third compoboard, the cooperation of pegging graft between the pressurization propulsion groove 121 at 8 length direction both ends of third compoboard and the pressurization propulsion plate 111 on the first compoboard 11 rather than adjacent forms coupling assembling 2 among embodiment 1, and two 2 symmetry settings of coupling assembling for can form the coaptation board body by end-to-end combination between three two compoboards 1.

Referring to fig. 8 and 9, the ends of the two pressing grooves 121 fixed to the third assemblable plate 8, which are away from each other, are straight. When the pressurizing and pushing plate 111 is inserted into the pressurizing and pushing grooves 121, the inner walls of the two pressurizing and pushing grooves 121 are square and are attached to the outer periphery of the pressurizing and pushing plate 111.

Referring to fig. 8, the third combination plate 8 may be provided with L CP coupling holes 7 (not shown) in embodiment 1 as locking holes along its length direction, may be provided with any hole pattern through which bolts can be inserted to fix the third combination plate 8 to the skeleton as locking holes, or may not be provided with any hole pattern, and preferably, a waist-shaped hole, which is the same as the second positioning hole 1211 in embodiment 1, is provided in the middle of the third combination plate 8 as a locking hole in this embodiment, and the surfaces of the pressing and pushing plate 111 and the pressing and pushing groove 121 abutting against each other in this embodiment may be provided with the first pushing rack 1112 and the second pushing rack 1212 in embodiment 1, or may be provided with a smooth surface or a concave-convex surface (not shown) in embodiment 3.

Example 5:

referring to fig. 10, the difference between this embodiment and embodiment 4 is that the middle portion of the third combination board 8 in the length direction is provided with the stress relief groove 5 in embodiment 2 for dispersing the stress concentrated at the connection position of the third combination board 8 and the other two combination boards.

Example 6:

referring to fig. 11, the present embodiment is different from embodiment 1 in that it includes three combination boards 1, which are a fourth combination board 9, a first combination board 11 in embodiment 1, and a second combination board 12 in embodiment 1. The first combination plate 11 is combined with one end of the fourth combination plate 9 in the longitudinal direction of the fourth combination plate 9, and the second combination plate 12 is combined with one end of the fourth combination plate 9 far from the first combination plate 11 in the longitudinal direction of the fourth combination plate 9.

Referring to fig. 11, the pressurizing/pushing plate 111 of example 1 is integrally formed at one end in the longitudinal direction of the fourth joint plate 9, and the end surface at one end in the thickness direction of the pressurizing/pushing plate 111 is flush with the end surface at one end in the thickness direction of the fourth joint plate 9. The pressurizing and pushing groove 121 in the embodiment 1 is integrally formed at one end of the fourth combination plate 9, which is far away from the pressurizing and pushing plate 111 fixed to the fourth combination plate 9, and the pressurizing and pushing plate 111 and the pressurizing and pushing groove 121 on the fourth combination plate 9 are both extended along the length direction of the fourth combination plate, so that the connecting components 2 in the embodiment are formed between the first combination plate 11 and the fourth combination plate 9 and between the second combination plate 12 and the fourth combination plate 9, and further, the three combination plates 1 and the two combination plates 1 can be combined end to form the bone fracture plate body.

Referring to fig. 12, the end portions of the pressing pushing plate 111 and the pressing pushing groove 121 fixed to the fourth combination plate 9, which are away from each other, are straight, and the groove wall of the pressing pushing groove 121 fixed to the fourth combination plate 9 is square, and is adapted to be attached to the outer circumferential wall of the pressing pushing plate 111, which is in insertion fit with the pressing pushing groove 121 of the fourth combination plate 9.

Referring to fig. 12, the fourth combination plate 9 may be provided with L CP coupling holes 7 in embodiment 1 as locking holes (not shown), or may be provided with any hole pattern through which bolts can be inserted to fix the fourth combination plate 9 to the skeleton, or may not be provided with any hole pattern, and in this embodiment, the fourth combination plate 9 is preferably provided with a waist-shaped hole in the middle thereof as a locking hole, the same as the second positioning hole 1211 in embodiment 1, and the surfaces of the pressing and pushing plate 111 and the pressing and pushing groove 121 abutting against each other in this embodiment may be provided with the first pushing rack 1112 and the second pushing rack 1212 in embodiment 1, or may be provided with a smooth surface or a concave-convex surface in embodiment 3.

Example 7:

referring to fig. 13, the present embodiment is different from embodiment 6 in that a stress relieving groove 5 of embodiment 2 is formed in a middle portion of a fourth combination plate 9 in a length direction thereof for dispersing stress concentrated at a connection portion of the fourth combination plate 9 and the other two combination plates.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (9)

1. An assembled pressurization bone fracture plate is characterized in that: the bone fracture plate comprises at least two combined plates (1), wherein each combined plate (1) is provided with a locking hole, the end parts, close to each other, of two adjacent combined plates (1) are connected with a connecting component (2) together, and the two adjacent combined plates (1) are combined through the connecting component (2) to form a bone fracture plate body;

the connecting assembly (2) comprises a pressurizing and propelling plate (111) and a pressurizing and propelling groove (121) which are spliced up and down, the pressurizing and propelling plate (111) and the pressurizing and propelling groove (121) are respectively and fixedly connected to one ends, close to each other, of two adjacent combined plates (1), when the pressurizing and propelling plate (111) is spliced with the pressurizing and propelling groove (121), the end area of one surface, facing the pressurizing and propelling groove (121), of the pressurizing and propelling plate (111) in the thickness direction is smaller than that of the other surface, facing away from the pressurizing and propelling groove (121), of the pressurizing and propelling plate (111), and the two end surfaces of the pressurizing and propelling plate (111) in the thickness direction are connected through an inclined surface (3);

one end of the pressurizing and propelling plate (111), which is far away from the combined plate (1) fixed with the pressurizing and propelling plate, is linear, and the groove wall of the pressurizing and propelling groove (121) is attached to the outer periphery of the pressurizing and propelling plate (111);

the pressurization impels and has seted up first locating hole (1111) on board (111), the pressurization impels and has seted up second locating hole (1211) on groove (121), when the coaptation board body is fixed with the skeleton, first locating hole (1111) are close to the skeleton setting, and the orthographic projection of first locating hole (1111) is located in second locating hole (1211), the aperture of second locating hole (1211) is the convergent trend along the direction of being close to first locating hole (1111).

2. The assembled compression bone plate of claim 1, wherein: when the pressurizing and pushing plate (111) is inserted into the pressurizing and pushing groove (121), the end surfaces, far away from each other, of the pressurizing and pushing plate (111) and the pressurizing and pushing groove (121) are flush with two end surfaces of the bone fracture plate body in the thickness direction respectively.

3. The assembled compression bone plate of claim 1, wherein: the surface of the pressurizing and propelling plate (111) which is abutted with the pressurizing and propelling groove (121) is provided with a concave-convex surface.

4. An assembled compression bone plate according to claim 3, wherein: the surface of the pressurizing and propelling plate (111) abutted to the pressurizing and propelling groove (121) is provided with a first propelling rack (1112), the first propelling racks (1112) are arranged in parallel along the length direction of the combined plate (1) fixed with the pressurizing and propelling plate (111), and the first propelling racks (1112) incline towards the surface of the combined plate (1) close to the first propelling racks towards the direction far away from the combined plate (1) close to the first propelling racks;

a plurality of second propelling racks (1212) meshed with the first propelling racks (1112) are arranged in the pressurizing propelling groove (121), and the second propelling racks (1212) incline towards the direction of keeping away from the combined plate (1) close to the combined plate (1).

5. The assembled compression bone plate of claim 1, wherein: one end of the pressurizing and propelling groove (121) far away from the combined plate (1) fixed with the pressurizing and propelling groove is linear, and one end of the combined plate (1) fixed with the pressurizing and propelling plate (111) is square and matched with the shape of the end part of the pressurizing and propelling groove (121).

6. The assembled compression bone plate of claim 1, wherein: the combined plate (1) is provided with a destressing groove (5) close to the connecting component (2).

7. The assembled compression bone plate of claim 1, wherein: the surface of the combined plate (1) is sunken to form a stress dispersion part (6), and the stress dispersion part (6) extends along the length direction of the combined plate (1).

8. An assembled compression bone plate according to claim 7, wherein: the end part, far away from the connecting component (2), of the combined plate (1) is provided with a guide part (4), and the width of the guide part (4) is gradually reduced along the length direction of the combined plate (1).

9. The assembled compression bone plate of claim 8, wherein: the guide portion (4) is bent toward the stress dispersion portion (6) to form a relief portion (41).

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