CN111449741A - Composite universal locking bone fracture plate - Google Patents

Abstract

The invention relates to a composite universal locking 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 one axial end of one of the two adjacent combined plates is fixed with a first compression pushing plate, the other axial end of the other combined plate close to the first compression pushing plate is fixed with a second compression pushing plate, and the two adjacent combined plates are spliced to form a bone fracture plate body through the first compression pushing plate and the second compression pushing plate; the first pressurizing and pushing plate is provided with a first positioning hole, the second pressurizing and pushing plate is provided with a second positioning hole, when the combined plate is fixed with a skeleton, the second positioning hole is arranged close to the skeleton, the orthographic projection of the second positioning hole is positioned in the first positioning hole, and the aperture of the first positioning hole is gradually reduced along the direction close to the 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

Composite universal locking bone fracture plate

Technical Field

The invention relates to the technical field of pressurizing locking bone fracture plates, in particular to a composite universal locking 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 a composite universal locking 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:

a composite universal locking bone fracture plate at least comprises two combined plates, wherein each combined plate is provided with a locking hole, one axial end of one of the two adjacent combined plates is fixedly connected with a first pressurizing and propelling plate, one axial end of the other one of the two adjacent combined plates, which is close to the first pressurizing and propelling plate, is fixedly connected with a second pressurizing and propelling plate, and the two adjacent combined plates are spliced to form a bone fracture plate body through the first pressurizing and propelling plate and the second pressurizing and propelling plate; the first pressurizing and pushing plate is provided with a first positioning hole, the second pressurizing and pushing plate is provided with a second positioning hole, when the combined plate is fixed with a skeleton, the second positioning hole is arranged close to the skeleton, the orthographic projection of the second positioning hole is positioned in the first positioning hole, and the aperture of the first positioning hole is gradually reduced along the direction close to the second positioning hole.

By adopting the technical scheme, after the two adjacent combination plates are mutually spliced through the first pressurizing and propelling plate and the second pressurizing and propelling plate, the overlapping area of the first pressurizing and propelling plate and the second pressurizing and propelling plate is continuously increased along with the mutual propulsion of the two adjacent combination plates, so that the gradually increased pressurizing power can be brought to the fracture part of a patient, two broken bones are gradually and mutually propelled by utilizing the friction force between the combination plates and the broken bones of the fracture part until the broken bones are pressurized and propelled to the correct reset position, different pressurizing powers can be conveniently selected by medical staff according to the actual fracture conditions of the patient during clinical treatment, after the broken bones of the fracture part are reset to the correct position, screws are simultaneously screwed into the first positioning holes and the second positioning holes, the propelling positions of the first pressurizing and propelling plates are positioned, so that stable pressurizing power can be provided for the fracture part, compared with the mode that the pressurizing power can be provided for the broken bones by combining L CP screwed on the eccentric screw in the first pressurizing and propelling plate in the second pressurizing plate in the prior art, the pressurizing power can be more conveniently adjusted for the compression of the fracture part of the patient during clinical operation, and the pressurizing power can be more conveniently used for the pressurizing power of the compression plate.

The present invention in a preferred example may be further configured to: the thickness of the first pressurizing and propelling plate is smaller than that of a combined plate fixed with the first pressurizing and propelling plate, the thickness of the second pressurizing and propelling plate is smaller than that of the combined plate fixed with the second pressurizing and propelling plate, and when the first pressurizing and propelling plate is spliced with the second pressurizing and propelling plate, the end surfaces, far away from each other, of the first pressurizing and propelling plate and the second pressurizing and propelling plate are flush with two end surfaces in the thickness direction of the bone fracture plate body respectively.

Through adopting above-mentioned technical scheme for when the coaptation board body connects on disconnected bone, two terminal surfaces of coaptation board body thickness direction are leveled, 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 surfaces of the first pressurizing and pushing plate and the second pressurizing and pushing plate, which are mutually abutted, are concave-convex surfaces.

Through adopting above-mentioned technical scheme, the setting of concave-convex surface has increased the coefficient of friction between first pressurization propulsion board and the second pressurization propulsion board for receive the resistance when first pressurization propulsion board and second pressurization propulsion board are close to each other, can control the pressurization power of composite board, reduce the too big condition of once pressurization and take place. Meanwhile, the friction force between the first pressurizing and propelling plate and the second pressurizing and propelling plate 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: a first pushing rack is arranged on the surface, abutted against the second pressing pushing plate, of the first pressing pushing plate, a plurality of first pushing racks are arranged in parallel along the length direction of the combined plate fixed with the first pressing pushing plate, and the first pushing racks incline towards the direction away from the combined plate close to the first pushing racks towards the surface of the combined plate close to the first pushing racks; the surface of the second pressurizing and propelling plate, which is abutted against the first pressurizing and propelling plate, is provided with a plurality of second propelling racks, the second propelling racks are meshed with the first propelling racks, and the second propelling racks incline towards the direction away from the combined plate close to the combined plate towards the surface close to the combined plate.

Through adopting above-mentioned technical scheme, first impel rack and second and impel the rack and make first pressurization impel board and second pressurization impel the mutual butt face of board and can form the corrugated surface, impel the compoboard under the rack meshing's the condition is pushed to first impel rack and second, can make two adjacent compoboards along the number of first propulsion 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 first pressurizing and propelling plate far away from the combined plate fixed with the first pressurizing and propelling plate is linear or arc-shaped, and the end of the combined plate fixed with the second pressurizing and propelling plate facing the first pressurizing and propelling plate is linear or arc-shaped and matched with the end part of the first pressurizing and propelling plate in shape.

Through adopting above-mentioned technical scheme for first pressurization impels board and second pressurization impel the board more coincide when the amalgamation, can improve the connection stability between two adjacent compoboards.

The present invention in a preferred example may be further configured to: the end of the second pressurizing and propelling plate far away from the combined plate fixed with the second pressurizing and propelling plate is linear or arc-shaped, and the end of the combined plate fixed with the first pressurizing and propelling plate facing the second pressurizing and propelling plate is linear or arc-shaped and matched with the end part of the second pressurizing and propelling plate in shape.

By adopting the technical scheme, the matching degree of the first pressurizing and pushing plate and the second pressurizing and pushing plate during splicing is further enhanced, so that the connection stability between two adjacent combined plates is further enhanced.

The present invention in a preferred example may be further configured to: the combined plate is provided with a destressing groove, and the destressing groove is arranged close to the first pressurizing and propelling plate or the second pressurizing and propelling plate.

The shape and the size of the bone fracture plate body are sharply changed at the combined position of the first pressurizing and pushing plate and the second pressurizing and pushing plate, so that stress is easily concentrated at the fixed position of the first pressurizing and pushing plate, the second pressurizing and pushing plate and the combined plate during bone fracture.

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.

By adopting the technical scheme, the stress concentrated on the fixing part of the first pressurizing and propelling plate or the second pressurizing and propelling plate and the combined plate can be further dispersed by the arrangement of the stress dispersing part.

The present invention in a preferred example may be further configured to: and guide parts are respectively formed at the ends, far away from each other, of the two combined plates at the two ends of the bone fracture plate body in the length direction, and the width of each 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 composition plate, the first pressurizing and pushing plate, the second pressurizing and pushing plate, the first positioning hole and the second positioning hole, not only can the broken bone be pressurized in different degrees according to the fracture severity of a patient easily during clinical treatment by medical staff, but also the pressurizing power which is larger than that of a traditional pressurizing and locking bone fracture plate can be provided for the broken bone, so that the medical staff can conveniently pressurize the fracture part of the patient to a larger degree during clinical treatment;

2. the arrangement of the concave-convex surfaces on the first pressurizing and propelling plate and the second pressurizing and propelling plate is easy to control the pressurizing power of the combined plate, so that the situation of overlarge one-time pressurizing is reduced;

3. the arrangement of the stress relief groove and the stress dispersion part is easy to disperse the stress concentrated on the fixing part of the first pressurizing and propelling plate or the second pressurizing and propelling plate and the combined plate, and the condition that the combined plate has fatigue cracks or fractures from the fixing part of the combined plate and the first pressurizing and propelling plate or the second pressurizing and propelling plate is reduced.

Drawings

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

Fig. 2 is an exploded view showing the front face joining relationship of the first composition board and the second composition board in example 1.

Fig. 3 is an exploded view showing the back face connection relationship of the first composition board and the second composition board in embodiment 1.

Fig. 4 is an exploded view for embodying the overall structure of embodiment 2.

Fig. 5 is a schematic structural view for embodying the first advancing rack and the second advancing rack in embodiment 3.

FIG. 6 is a schematic view of the entire structure of embodiment 4.

Fig. 7 is an exploded view for embodying the entire structure of embodiment 6.

Fig. 8 is a schematic structural view of a third combination plate in embodiment 4.

Fig. 9 is an exploded view for embodying the entire structure of embodiment 5.

Fig. 10 is an exploded view for embodying the entire structure of embodiment 6.

Fig. 11 is a schematic structural view of a fourth combination plate in embodiment 6.

Fig. 12 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 first pressurizing and pushing board, 1111, a first positioning hole, 1112, a first pushing rack, 12, a second combination board, 121, a second pressurizing and pushing board, 1211, a second positioning hole, 1212, a second pushing rack, 13, a third combination board, 14, a fourth combination board, 2, a guide part, 21, a decompression part, 3, a stress relief groove, 4, a stress dispersion part, 5, L CP combination holes, 51, a power pressurizing hole, 52, and a locking screw hole.

Detailed Description

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

Example 1:

referring to fig. 1, the composite universal locking bone plate disclosed in this embodiment includes two combination plates 1, which are a first combination plate 11 and a second combination plate 12. The two ends of the first combined board 11 and the second combined board 12 which are close to each other in the length direction are spliced to form the bone fracture board body.

Referring to fig. 2, a first pressing and pushing plate 111 is integrally formed at one axial end of the first combination plate 11, and the first pressing and pushing plate 111 extends along the axis of the first combination plate 11. The thickness of the first pressing and pushing plate 111 is half of the thickness of the first combination plate 11, the end surface of one end of the first pressing and 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, and a waist-shaped first positioning hole 1111 penetrates through the first pressing and pushing plate 111 in the thickness direction. A second pressing and pushing plate 121 is integrally formed at one end of the second combined plate 12, which is axially close to the first pressing and pushing plate 111, the thickness of the second pressing and pushing plate 121 is half of the thickness of the second combined plate 12, the end surface of one end of the second pressing and pushing plate 121 in the thickness direction is flush with the end surface of one end of the second combined plate 12 in the thickness direction, and a circular second positioning hole 1211 penetrates through the second pressing and pushing plate 121 in the thickness direction. When the first pressurizing and pushing plate 111 and the second pressurizing and pushing plate 121 are combined, two end faces of the bone plate body in the thickness direction are flush.

Referring to fig. 2, when the bone fracture plate body is fixed to a bone, the first pressurizing propulsion plate 111 and the second pressurizing propulsion plate 121 are vertically spliced, the second positioning hole 1211 is arranged close to the bone, the orthographic projection of the second positioning hole 1211 is located in the first positioning hole 1111, and the hole wall of the first positioning hole 1111 is in a concave arc-shaped tapered trend along the direction close to the second positioning hole 1211, at this time, a medical worker can use a screw to sequentially pass through the first positioning hole 1111 and the second positioning hole 1211, one side of the head of the screw, which is close to the rod portion of the screw, is in a hemispherical shape, the diameter of the hemispherical shape of the screw is tapered along the direction close to the rod portion, so that the head of the screw can be tightly.

Referring to fig. 2, the end of the first pressing plate 111 away from the first combination plate 11 fixed thereto may be straight, and the end of the second combination plate 12 fixed to the second pressing plate 121 may be straight (not shown) matching the shape of the end of the first pressing plate 111. The end of the first pressing and pushing plate 111 far away from the first combination plate 11 fixed thereto may also be an arc shape protruding outward along the length direction of the first combination plate 11, and the end of the second combination plate 12 fixed with the second pressing and pushing plate 121 is a concave arc shape towards the direction far away from the first pressing and pushing plate 111 combined therewith, so that the end parts of the first pressing and pushing plate 111 and the second combination plate 12 close to each other are more matched when being combined. The arc design of the end part of the first pressurizing and pushing plate 111 far away from the combined plate 1 fixed with the first pressurizing and pushing plate enables the end part of the first pressurizing and pushing plate 111 to be more smooth, and when the first combined plate 11 penetrates into the subcutaneous space of a patient from one end of the first pressurizing and pushing plate 111, the scratch of the first pressurizing and pushing plate 111 on soft tissues of the patient can be reduced. The arc design of one end of the second combination plate 12 fixed with the second pressing and pushing plate 121 can disperse the stress concentrated at the joint of the second combination plate 12 and the second pressing and pushing plate 121.

Referring to fig. 3, the end of the second pressing plate 121 far from the second combination plate 12 fixed thereto may be straight, and the end of the first combination plate 11 fixed to the first pressing plate 111 may be straight (not shown) matching the shape of the end of the second pressing plate 121. The end of the second pressing and pushing plate 121 far from the second combination plate 12 fixed thereto may also be an arc shape protruding outward along the length direction of the second combination plate 12, and the end of the first combination plate 11 fixed with the first pressing and pushing plate 111 is an arc shape recessed along the direction far from the second pressing and pushing plate 121 joined thereto (see fig. 2), which can disperse the stress concentrated at the joint of the first combination plate 111 and the first pressing and pushing plate 111. Meanwhile, the end part of the second pressurizing and pushing plate 121 is designed to be arc-shaped, so that the end part of the second pressurizing and pushing plate 121 is more smooth, and when the second combination plate 12 penetrates into the subcutaneous space of the patient from one end of the second pressurizing and pushing plate 121, the soft tissue of the patient can be prevented from being scratched by the second pressurizing and pushing plate 121.

Referring to fig. 2 and 3, the surfaces of the second pressure-feed plate 121 and the first pressure-feed plate 111 that are in contact with each other are processed into uneven surfaces by a processing process such as shot blasting, sand blasting, roll pressing, or oxidation, and the uneven surfaces can increase the frictional resistance when the first pressure-feed plate 111 and the second pressure-feed plate 121 are advanced, thereby reducing the occurrence of excessive primary pressurization.

Referring to fig. 2, the guide portions 2 are integrally formed at the ends of the first combination plate 11 and the second combination plate 12 away from each other, and the width of each guide portion 2 gradually decreases in an arc shape along the length direction of the bone fracture plate body, so that the end of each guide portion 2 away from the combination plate 1 fixed to the guide portion is in an arc shape.

Referring to fig. 3, stress diffusion parts 4 are concavely formed on the same end surface of one end of the first combination plate 11 and the second combination plate 12 in the thickness direction, the stress diffusion parts 4 extend along the length direction of the bone fracture plate body, the stress diffusion parts 4 are positioned on both sides of the bone fracture plate body in the width direction, and the stress diffusion parts 4 on both sides of the guide part 2 in the width direction are communicated with each other at the edge of the guide part 2. The guide part 2 is bent towards the stress dispersion part 4 to form a pressure reduction part 21 so as to reduce the compression of the bone fracture plate body on the periosteum of a patient during bone fracture.

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 for locking the two combination plates 1 to a fracture site, the locking holes may be L CP coupling holes 5, or may be any hole type through which bolts can be inserted to fix the two combination plates 1 and bones, the locking holes in this embodiment are preferably L CP coupling holes 5, L CP coupling holes 5 include power pressurizing holes 51 having an unthreaded inner wall and locking screw holes 52 communicating with the power pressurizing holes 51 along the length direction of the combination plates 1, the inner walls of the locking screw holes 52 are threaded (not shown) for connecting locking screws to fix the combination plates 1 and bones, the walls of the power pressurizing holes 51 are concave arc-shaped for eccentrically connecting cortical screws to achieve the effect of pressure locking of the combination plates 1 and bones, and the power pressurizing holes 51 of the first combination plate 11 are disposed opposite to the power pressurizing holes 51 of the second combination plate 12, so that the bone fracture can be simultaneously pressurized from the two combination plates 1 toward the fracture site of the connection assembly.

The embodiment is implemented by making a cut to the periosteum of the fractured bone on the soft tissue surrounding the fractured bone of the patient according to the lengths of the first combination plate 11 and the second combination plate 12 when the composite universal locking bone fracture plate of the embodiment is used for setting the fractured bone of the patient, extending the guide part 2 of one combination plate 1 from the cut to the soft tissue and pass through the fractured bone, and after the combination plate 1 reaches the required position, locking the combination plate to the bone by pressurizing through an L CP combining hole 5, extending one end of the other combination plate 1 far away from the guide part 2 from the cut, so that the first pressurizing propulsion plate 111 and the second pressurizing propulsion plate 121 are vertically combined, at the moment, the second positioning hole 1211 is close to the bone, pushing the extended combination plate 1 according to the resetting force required by the fractured bone of the patient, changing the overlapping area of the first pressurizing propulsion plate 111 and the second pressurizing propulsion plate 121, so that the extended combination plate 1 can drive the fractured bone to be combined to the correct resetting position 1211 until the power applied to the combination plate 1 reaches the correct position, and the screws are sequentially inserted through the second combination plate 11 and the second combination plate 121 from the top to the second positioning hole 12.

Example 2:

referring to fig. 4, the present embodiment is different from embodiment 1 in that a stress relieving groove 3 is opened in the first combination plate 11 near the first pressing and pushing plate 111, and the stress relieving groove 3 penetrates the first combination plate 11 in the thickness direction of the first combination plate 11. The stress relieving grooves 3 serve to disperse stress concentrated at the joint of the first combination plate 11 and the second combination plate 12, so that the bone plate body spliced and fixed to the bone is not easily broken at the joint of the first combination plate 11 and the second combination plate 12.

Example 3:

referring to fig. 5, the present embodiment is different from embodiment 1 in that a first pushing rack 1112 is integrally fixed to a surface of the first pressing and pushing plate 111 that is in contact with the second pressing and pushing plate 121, the first pushing racks 1112 are arranged in parallel in the longitudinal direction of the first assembled plate 11, and the first pushing rack 1112 is inclined toward a surface of the second pressing and pushing plate 121 that is assembled with the first pushing rack 1112 and away from the second pressing and pushing plate 121 that is assembled with the first pressing and pushing plate. A second pushing rack 1212 is integrally fixed to a surface of the second pressing pushing plate 121, which is used for abutting against the first pressing pushing plate 111, and the second pushing rack 1212 is engaged with the first pushing rack 1112. The second pushing rack 1212 is inclined toward a face of the first pressing pushing plate 111 fitted therewith in a direction away from the first pressing pushing plate 111 fitted therewith.

Referring to fig. 5, when the first pressing blade 111 and the second pressing blade 121 are gradually pushed in the direction of approaching each other, the first pushing rack 1112 and the second pushing rack 1212 are easily pushed one by one, and the pressing power of the first pressing blade 111 and the second pressing blade 121 can be limited so as not to be excessively large at one time. The first pushing rack 1112 and the second pushing rack 1212 are both 0.5 mm high, and when the plate is removed, the medical staff can slightly lift the pressing pushing plate to disconnect the first pushing rack 1112 and the second pushing rack 1212. 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 combined pressurizing and locking bone fracture plate in the embodiment can realize the micro-pressurizing effect.

Example 4:

referring to fig. 6, the present embodiment is different from embodiment 1 in that three composite boards 1 are included, that is, one third composite board 13 and two second composite boards 12 in embodiment 1, and the two second composite boards 12 are combined at both ends of the third composite board 13 in the axial direction of the third composite board 13.

Referring to fig. 7, the first pressing and pushing plates 111 of embodiment 1 are integrally formed at both ends of the third combination plate 13 in the longitudinal direction, and the first pressing and pushing plates 111 extend in the longitudinal direction of the third combination plate 13. The thickness of the first pressing and pushing plate 111 fixed to the third combination plate 13 is half of the thickness of the third combination plate 13, and the end surface of one end in the thickness direction of the first pressing and pushing plate 111 fixed to the third combination plate 13 is flush with the end surface of one end in the thickness direction of the third combination plate 13. The first pressing pushing plate 111 fixed to the third combination plate 13 is formed with a first positioning hole 1111 for aligning with the second positioning hole 1211 of the first pressing pushing plate 111. The first pressurizing and pushing plate 111 fixed at the two ends of the third combination plate 13 in the length direction and the second pressurizing and pushing plate 121 on the second combination plate 12 adjacent to the first pressurizing and pushing plate are vertically spliced, so that the three combination plates 1 are connected end to form the bone fracture plate body.

Referring to fig. 8, in different embodiments, the end portions of the two first pressing plates 111 fixed to the third combination plate 13, which are away from each other, may be straight or arc-shaped and protrude outward along the length direction of the third combination plate 13, and are configured to match with the shape of the end of the second combination plate 12 facing the first pressing plate 111, so that when the first pressing plate 111 and the second pressing plate 121 are pressed and pushed to the maximum position, the end of the second combination plate 12 facing the first pressing plate 111 can be more closely attached to the end of the first pressing plate 111.

Referring to fig. 8, the third combination plate 13 may be provided with L CP coupling holes 5 as locking holes in embodiment 1, or may be provided with any hole pattern as locking holes for bolts to pass through to fix the third combination plate 8 and the bone, or may not be provided with any hole pattern, in this embodiment, preferably, a waist-shaped hole as the same as the first positioning hole 1111 in embodiment 1 is provided in the middle of the third combination plate 8, and the locking hole is provided in this embodiment, the surfaces of the first pressing and pushing plate 111 and the second pressing and pushing plate 121 abutting against each other in this embodiment may be concave-convex surfaces in embodiment 1, or may be provided with the first pushing rack 1112 and the second pushing rack 1212 (not shown in the figure) in embodiment 2.

Example 5:

referring to fig. 9, the difference between this embodiment and embodiment 4 is that the middle of the third spliced plate 8 is provided with the stress relieving groove 3 of embodiment 2 for dispersing the stress concentrated at the joint of the third spliced plate 8 and the other two combined plates.

Example 6:

referring to fig. 10, the present embodiment is different from embodiment 1 in that it includes three combination boards 1, namely, a fourth combination board 14, 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 14 in the longitudinal direction of the fourth combination plate 14, and the second combination plate 12 is combined with one end of the fourth combination plate 14 away from the first combination plate 11 in the longitudinal direction of the fourth combination plate 14.

Referring to fig. 10, a first pressing and pushing plate 111 of embodiment 1 is integrally formed at one end of a fourth combination plate 14 in a longitudinal direction thereof in an axial direction thereof to be engaged with a second pressing and pushing plate 121 fixed to a second combination plate 12. The thickness of the first pressure-feed plate 111 fixed to the fourth combination plate 14 is half of the thickness of the fourth combination plate 141, and the end surface of one end in the thickness direction of the first pressure-feed plate 111 fixed to the fourth combination plate 141 is flush with the end surface of one end in the thickness direction of the fourth combination plate 141. The first pressing plate 111 fixed to the fourth combination plate 141 is formed with the first positioning hole 1111 of embodiment 1 for aligning with the second positioning hole 1211 of the second combination plate 12.

Referring to fig. 10, the end of the fourth combination plate 141 away from the first pressing and pushing plate 111 fixed thereto is integrally formed with the second pressing and pushing plate 121 of embodiment 1, and is used to be combined with the first pressing and pushing plate 111 fixed to the first combination plate 11. The thickness of the second pressing and pushing plate 121 fixed to the fourth combination plate 141 is half of the thickness of the fourth combination plate 141, and the end surface of one end of the second pressing and pushing plate 121 fixed to the fourth combination plate 141 in the thickness direction is flush with the end surface of one end of the fourth combination plate 141 in the thickness direction. The first combination plate 11 and the fourth combination plate 141 and the second combination plate 12 are respectively spliced end to end through the first pressurizing and propelling plate 111 and the second pressurizing and propelling plate 121 to form the bone fracture plate body. The second pressing and pushing plate 121 fixed to the fourth assembling plate 141 is formed with the second positioning hole 1211 in embodiment 1 for aligning with the first positioning hole 1111 of the first assembling plate 11.

Referring to fig. 11, in various embodiments, the end portions of the first pressing pushing plate 111 and the second pressing pushing plate 121 fixed to the fourth combination plate 14, which are far away from each other, may be straight or circular arc protruding outward along the length direction of the fourth combination plate 14, and are configured to conform to the end portions of the first combination plate 11 and the second combination plate 12, so that when the first pressing pushing plate 111 and the second pressing pushing plate 121 are pressed to the maximum position, the end of the second combination plate 12 facing the first pressing pushing plate 111 can be more closely attached to the end portion of the first pressing pushing plate 111.

Referring to fig. 11, the fourth combination plate 14 may be provided with L CP coupling holes 5 in embodiment 1 as locking holes (not shown) along the longitudinal direction thereof, may be provided with any hole pattern through which a bolt can be inserted to fix the fourth combination plate 14 to a bone, or may be provided without any hole, and preferably, the fourth combination plate 14 in this embodiment is provided with a waist-shaped hole in the middle thereof as the locking hole, which is the same as the first positioning hole 1111 in embodiment 1, the surfaces of the first pressing and pushing plate 111 and the second pressing and pushing plate 121 in this embodiment abutting against each other may be concave and convex surfaces in embodiment 1, or may be provided with the first pushing rack 1112 and the second pushing rack 1212 in embodiment 2.

Example 7:

referring to fig. 12, the present embodiment is different from embodiment 6 in that a stress relieving groove 3 of embodiment 2 is formed in the middle of a fourth composite board 14 to disperse stress concentrated on the joint of the fourth composite board 14 and the other two composite boards.

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 (10)

1. The utility model provides a compound universal type locking coaptation board which 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, one axial end of one of the two adjacent combined plates (1) is fixedly connected with a first pressurizing and propelling plate (111), one axial end of the other one of the two adjacent combined plates (1) close to the first pressurizing and propelling plate (111) is fixedly connected with a second pressurizing and propelling plate (121), and the two adjacent combined plates (1) are spliced to form a bone fracture plate body through the first pressurizing and propelling plate (111) and the second pressurizing and propelling plate (121);

the first pressurizing and pushing plate (111) is provided with a first positioning hole (1111), the second pressurizing and pushing plate (121) is provided with a second positioning hole (1211), when the combined plate (1) is fixed with a bone, the second positioning hole (1211) is arranged close to the bone, the orthographic projection of the second positioning hole (1211) is located in the first positioning hole (1111), and the aperture of the first positioning hole (1111) is gradually reduced along the direction close to the second positioning hole (1211).

2. A composite, gimbaled locking bone plate according to claim 1, wherein: the thickness of the first pressurizing and propelling plate (111) is smaller than that of the combined plate (1) fixed with the first pressurizing and propelling plate, the thickness of the second pressurizing and propelling plate (121) is smaller than that of the combined plate (1) fixed with the second pressurizing and propelling plate, and when the first pressurizing and propelling plate (111) is spliced with the second pressurizing and propelling plate (121), the end surfaces, far away from each other, of the first pressurizing and propelling plate (111) and the second pressurizing and propelling plate (121) are flush with the two end surfaces of the bone fracture plate body in the thickness direction respectively.

3. A composite, gimbaled locking bone plate according to claim 1, wherein: the surfaces of the first pressurizing and propelling plate (111) and the second pressurizing and propelling plate (121) which are mutually abutted are concave-convex surfaces.

4. A composite gimbaled locking plate according to claim 3, wherein: the first pressurizing and pushing plate (111) and the second pressurizing and pushing plate (121) are abutted, a plurality of first pushing racks (1112) are arranged in parallel along the length direction of the combined plate (1) fixed with the first pressurizing and pushing plate (111), and the first pushing racks (1112) incline towards the direction of one surface of the combined plate (1) close to the first pushing racks (1112) to the direction far away from the combined plate (1) close to the first pushing racks;

the surface of the second pressurizing and propelling plate (121) abutted against the first pressurizing and propelling plate (111) is provided with a plurality of second propelling racks (1212), the second propelling racks (1212) are meshed with the first propelling racks (1112), and one surface of the second propelling racks (1212) facing the combined plate (1) close to the second propelling racks is inclined towards the direction far away from the combined plate (1) close to the second propelling racks.

5. A composite, gimbaled locking bone plate according to claim 1, wherein: one end of the first pressurizing and propelling plate (111) far away from the combined plate (1) fixed with the first pressurizing and propelling plate is linear or arc-shaped, and one end of the combined plate (1) fixed with the second pressurizing and propelling plate (121) facing the first pressurizing and propelling plate (111) is linear or arc-shaped and is matched with the end part of the first pressurizing and propelling plate (111) in shape.

6. A composite, gimbaled locking bone plate according to claim 1, wherein: one end of the second pressurizing and propelling plate (121) far away from the combined plate (1) fixed with the second pressurizing and propelling plate is linear or arc-shaped, and one end of the combined plate (1) fixed with the first pressurizing and propelling plate (111) facing the second pressurizing and propelling plate (121) is linear or arc-shaped and is matched with the end part of the second pressurizing and propelling plate (121) in shape.

7. A composite, gimbaled locking bone plate according to claim 1, wherein: the combined plate (1) is provided with a destressing groove (3), and the destressing groove (3) is arranged close to the first pressurizing and propelling plate (111) or the second pressurizing and propelling plate (121).

8. A composite, gimbaled locking bone plate according to claim 1, wherein: the surface of the combined plate (1) is sunken to form a stress dispersion part (4), and the stress dispersion part (4) extends along the length direction of the combined plate (1).

9. A composite, gimbaled locking bone plate according to claim 8, wherein: the bone fracture plate is characterized in that guide parts (2) are respectively formed at the ends, far away from each other, of the two combined plates (1) positioned at the two ends of the bone fracture plate body in the length direction, and the width of each guide part (2) is gradually reduced along the length direction of the combined plate (1).

10. A composite, gimbaled locking bone plate according to claim 9, wherein: the guide part (2) is bent towards the stress dispersion part (4) to form a decompression part.

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