Locking bone fracture plate

Abstract

The utility model relates to the technical field of surgical instruments, in particular to a locking bone fracture plate which comprises a bone plate body, a plurality of locking holes used for screws to penetrate through are formed in the bone plate body in the length direction, the locking holes are kidney-shaped holes, an inner support and an outer support are arranged in the locking holes and are arranged in a nested mode, and the outer support and the inner support are connected with each other. The outer support can move in the length direction of the locking hole, the inner support can rotate around the width direction of the locking hole, a screw hole is formed in the inner support, a locking groove communicated with the locking hole is formed in the bone plate body, a locking piece abutting against the inner support and the outer support is arranged in the locking groove, and first springs are symmetrically arranged at the two ends of the outer support in the length direction of the outer support. The outer support is arranged in the middle of the locking hole through a first spring. According to the locking bone fracture plate, the angle of the screw hole is adjusted through cooperation of the inner support and the outer support, then the adjusted inner support and the outer support are pre-positioned through the locking piece, the inner support and the outer support are slightly moved through elastic fixing, and self-adaption can be achieved along with bone growth.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, in particular to a locking bone plate. Background Art

[0002] In modern medicine, fractures are a common trauma, and the use of bone plates is an important treatment for severe fractures. Traditional bone plate designs can help fix and heal fractures to a certain extent, but they also have many problems.

[0003] Traditional bone plates typically use a single fixation mode, which cannot flexibly adjust the locking state according to the patient's bone growth and recovery stage. This results in the inability to effectively release the torque between the plate and screw during bone growth, increasing patient discomfort.

[0004] For example, in some patients, during the later stages of fracture healing, the bones gradually grow, but the plate remains in a fixed locked state, which causes greater stress between the bone and the plate and causes pain. There is an urgent need for a plate that can perform micro-movements and adapt to bone growth. For example, the patent with announcement number CN220938137U discloses a dynamic locking screw and a dynamic locking plate, which attempts a micro-motion plate. Utility Model Content

[0005] In order to solve the problem that the existing bone plate has a single fixing method, which makes it impossible to effectively release the torque between the bone plate and the screw, the utility model provides a locking bone plate, which realizes the adjustment of the locking hole angle through the cooperation of the inner and outer brackets, and then uses the locking piece to pre-position the adjusted inner and outer brackets. The elastic fixation allows the inner and outer brackets to achieve micro-movement and can adapt to the growth of the bone.

[0006] The utility model provides a locking bone plate, comprising a bone plate body, a plurality of locking holes for screws to pass through the length of the bone plate body, the locking holes being waist-shaped holes, an inner bracket and an outer bracket being arranged in the locking holes, the inner bracket and the outer bracket being nested, the outer bracket being displaceable along the length of the locking holes, and the inner bracket being rotatable about the width of the locking holes, the inner bracket being provided with screw holes, a locking groove being provided on the bone plate body and communicating with the locking holes, and a locking member being provided in the locking groove for abutting against the inner bracket and the outer bracket. The inner bracket and the outer bracket are both elastically pre-positioned and can slightly move with bone growth, thereby alleviating patient discomfort.

[0007] Furthermore, the outer bracket is symmetrically provided with first springs at both ends along the length direction thereof, and the outer bracket is placed in the middle of the locking hole through the first springs. The outer bracket can be slightly moved along the length direction of the locking hole through the first springs at both ends thereof.

[0008] Furthermore, the outer bracket is provided with extension sliders on both sides along its width direction, and the side walls of the locking hole are provided with corresponding sliding grooves for the extension sliders to slide, and the sliding grooves connect the locking groove and the locking hole. Through the cooperation of the extension sliders and the sliding grooves, the outer bracket can slide in the length direction.

[0009] Furthermore, a mounting hole for fixing the inner bracket is opened in the extended slider, and a rotating rod is provided on both sides of the inner bracket to rotate with the mounting hole. The inner bracket is rotated and arranged in the outer bracket by the rotating rods on both sides, which facilitates the pre-positioning of the screw fixing angle.

[0010] Furthermore, a damping ring is sheathed around the rotating rod, which is rotated in the mounting hole by the damping ring. The rotating rod passes through the mounting hole and abuts against the locking member. The rotating rod passing through the mounting hole is flush with the end surface of the extended slider. The provision of the damping ring increases the rotational resistance between the rotating rod and the mounting hole.

[0011] Furthermore, the locking member includes a locking plate and a plurality of second springs. The locking plate is movable within the locking slot by the plurality of second springs, and abuts against the extended slider and the rotating rod. The locking member is positioned on either side of the outer bracket, and the second springs are used to push the outer bracket until it abuts against the opposite side of the sliding slot wall, thereby achieving locking.

[0012] Furthermore, the locking member includes a base frame, a connecting plate, and a push plate. The base frame is fixedly mounted within the locking groove, the push plate is movably mounted within the base frame via a plurality of second springs, and the locking plate is connected to a locking plate positioned outside the base frame via a connecting plate. The base frame serves to guide the second springs and the push plate, ensuring stable movement of the locking plate.

[0013] Furthermore, the bottom frame has an opening, and limiting steps are formed at both ends of the opening to prevent the push plate from falling out, and the connecting plate is slidably arranged in the opening. The limiting steps can prevent the push plate from falling out of the bottom frame.

[0014] The beneficial effects of the present invention are:

[0015] The utility model provides a locking bone fracture plate, which can adjust the angle of the inner bracket by rotating the inner and outer brackets, that is, adjust the angle of the screw hole on the inner bracket, that is, adjust the screw implantation angle: after adjustment, it can be locked and fixed by a locking member. Since the locking member is elastically locked by the cooperation of a spring and a locking plate, it can produce micro-movements as the bone grows, achieve self-adaptation, will not hinder bone growth, and alleviate the patient's pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a schematic diagram of the external structure of a locking bone plate;

[0018] Figure 2 is a schematic diagram of the internal structure of a locking bone plate;

[0019] Figure 3 yes Figure 2 A magnified view of point A in the figure;

[0020] In the figure, 1. bone plate body, 11. locking groove, 12. slide groove, 2. locking hole, 3. inner bracket, 31. screw hole, 32. rotating rod, 33. damping ring, 4. outer bracket, 41. extension slider, 42. mounting hole, 5. first spring, 6. locking plate, 61. second spring, 62. bottom frame, 63. connecting plate, 64. push plate, 65. limiting step. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] To accommodate bone growth, a locking plate is designed, such as Figure 1 As shown, it includes a bone plate body 1, and a plurality of locking holes 2 for screws to pass through are provided in the length direction of the bone plate body 1. The screws are implanted into the patient's bone through the locking holes 2 to reinforce the bone. The locking hole 2 is a waist-shaped hole, and an inner bracket 3 and an outer bracket 4 are provided in the locking hole 2. The outer bracket 4 is symmetrically provided with a first spring 5 at both ends along its length. The outer bracket 4 is placed in the middle of the locking hole 2 through the first spring 5. The inner bracket 3 and the outer bracket 4 are nested. The outer bracket 4 can be displaced along the length direction of the locking hole 2, and the inner bracket 3 can be rotated around the width direction of the locking hole 2. The inner bracket 3 is provided with a screw hole 31. The bone plate body 1 is provided with a locking groove 11 connected to the locking hole 2. The locking groove 11 is provided with a locking piece that abuts against the inner bracket 3 and the outer bracket 4. The locking piece is provided on either side of the two long sides of the waist-shaped hole.

[0023] Before use, the inner bracket 3 can be rotated to adjust the angle of the screw hole 31 on the inner bracket 3, that is, the angle of the screw implantation, and then the adjusted bracket can be fixed with the locking piece. In this way, the screw can be accurately implanted to meet the implantation requirements of different angles. In the later stage of use, the locking piece of the elastic structure will not hinder bone growth. Bone growth will compress the spring, so that the bracket can produce micro-movements with bone growth to achieve self-adaptation.

[0024] like Figure 2 and 3 As shown, the outer bracket 4 is provided with extended sliders 41 on both sides along its width direction, and the side walls of the locking hole 2 are provided with corresponding sliding grooves 12 for the extended sliders 41 to slide. The sliding grooves 12 connect the locking groove 11 and the locking hole 2. Through the cooperation between the extended sliders 41 and the sliding grooves 12, the outer bracket 4 can slide more stably in the waist-shaped hole.

[0025] The extended slider 41 has mounting holes 42 formed in it for securing the inner bracket 3. Rotating rods 32 are provided on either side of the inner bracket 3, rotatably engaging the mounting holes 42. The inner bracket 3 rotatably engages the extended slider 41 of the outer bracket 4 via the rotating rods 32 at its ends, allowing it to rotate around the width of the waist-shaped hole to adjust the angle of the screw hole 31.

[0026] In order to ensure the locking force during pre-positioning before use, a damping ring 33 is provided on the outer surface of the rotating rod 32. The rotating rod 32 is rotatably set in the mounting hole 42 through the damping ring 33. The rotating rod 32 passes through the mounting hole 42 and abuts against the locking piece. The rotating rod 32 passing through the mounting hole 42 is flush with the end face of the extended slider 41. Through the setting of the damping ring 33, the resistance of the rotating rod 32 during rotation is further increased, thereby improving the stability of the bracket.

[0027] Specifically, the locking member includes a locking plate 6 and a plurality of second springs 61. The locking plate 6 is movably disposed within the locking groove 11 by the plurality of second springs 61. The locking plate 6 abuts against the extension slider 41 and the rotating rod 32. The abutment between the locking plate 6, the extension slider 41, and the rotating rod 32 allows the inner and outer brackets to be positioned and stabilized.

[0028] The locking member further includes a bottom frame 62, a connecting plate 63, and a push plate 64. The bottom frame 62 is fixedly disposed within the locking groove 11. The push plate 64 is movably disposed within the bottom frame 62 via a plurality of second springs 61. The locking plate 6 is connected to the locking plate 6 disposed outside the bottom frame 62 via the connecting plate 63. The bottom frame 62 has an opening with stopper steps 65 formed at both ends of the opening to prevent the push plate 64 from falling out. The connecting plate 63 is slidably disposed within the opening.

[0029] The locking plate 6 is pushed against the outer periphery of the limiting step 65 so that the locking plate 6 is disengaged from the extension slider 41. At this time, the second spring 61 is compressed and the inner bracket 3 can be rotated to adjust its position. After adjusting the angle of the inner bracket 3, the locking plate 6 is released, and the second spring 61 is reset and pushes the locking plate 6 against the extension slider 41. The locking plate 6 fixes the extension slider 41 and the rotating rod 32 with flush end faces, that is, fixes the inner bracket 3 and the outer bracket 4.

[0030] The above description is only illustrative and not restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all of them will fall within the scope of protection of the present invention.

Claims

1. A locking bone plate, comprising a bone plate body (1), wherein the bone plate body (1) is provided with a plurality of locking holes (2) for screws to pass through in the longitudinal direction, characterized in that: The locking hole (2) is a waist-shaped hole. An inner bracket (3) and an outer bracket (4) are provided in the locking hole (2). The inner bracket (3) and the outer bracket (4) are nested. The outer bracket (4) can be displaced along the length direction of the locking hole (2). The inner bracket (3) can be rotated around the width direction of the locking hole (2). A screw hole (31) is provided on the inner bracket (3). The bone plate body (1) is provided with a locking groove (11) communicating with the locking hole (2), and a locking piece is provided in the locking groove (11) and abuts against the inner bracket (3) and the outer bracket (4).

2. The locking bone plate according to claim 1, characterized in that: The outer bracket (4) is symmetrically provided with first springs (5) at both ends along its length direction, and the outer bracket (4) is placed in the middle of the locking hole (2) through the first springs (5).

3. The locking bone plate according to claim 2, characterized in that: The outer bracket (4) is provided with extension sliders (41) on both sides along its width direction, and the side walls of the locking hole (2) are correspondingly provided with sliding grooves (12) for the extension sliders (41) to slide, and the sliding grooves (12) are connected to the locking groove (11) and the locking hole (2).

4. The locking bone plate according to claim 3, characterized in that: A mounting hole (42) for fixing the inner bracket (3) is provided in the extending slider (41), and rotating rods (32) rotatably matched with the mounting holes (42) are provided on both sides of the inner bracket (3).

5. The locking bone plate according to claim 4, characterized in that: The rotating rod (32) is sheathed with a damping ring (33). The rotating rod (32) is rotatably arranged in the mounting hole (42) through the damping ring (33). The rotating rod (32) passes through the mounting hole (42) and abuts against the locking member. The rotating rod (32) passing through the mounting hole (42) is flush with the end surface of the extending slider (41).

6. The locking bone plate according to claim 5, characterized in that: The locking member comprises a locking plate (6) and a plurality of second springs (61). The locking plate (6) is movably arranged in the locking groove (11) via the plurality of second springs (61). The locking plate (6) abuts against the extending slider (41) and the rotating rod (32).

7. The locking bone plate according to claim 6, characterized in that: The locking member further comprises a bottom frame (62), a connecting plate (63) and a push plate (64); the bottom frame (62) is fixedly arranged in the locking groove (11); the push plate (64) is movably arranged in the bottom frame (62) via a plurality of second springs (61); and the locking plate (6) is connected to the locking plate (6) disposed outside the bottom frame (62) via the connecting plate (63).

8. The locking bone plate according to claim 7, characterized in that: The bottom frame (62) has an opening, and limiting steps (65) are formed at both ends of the opening to prevent the push plate (64) from falling out, and the connecting plate (63) is slidably arranged in the opening.

Images