Malleolus medialis compression locking hook bone fracture plate

Abstract

The invention relates to the technical field of orthopedic medical instruments, in particular to a medial malleolus compression locking hook bone fracture plate which comprises a medial malleolus bone and a bone fracture plate body mounted on the outer surface of the medial malleolus bone. Locking pressurization holes, a distal tibiofibular syndesmosis fixing channel, a horizontal locking hole and a medial malleolus pressurization hole are sequentially formed in the bone fracture plate body from top to bottom, and the two sets of locking pressurization holes are matched with locking pressurization screws. According to the distal tibiofibular syndesmosis fixing device, distal tibiofibular syndesmosis fixing is carried out through retrograde drilling of the distal tibiofibular syndesmosis fixing channel and introduction of the belt carrier steel plate, the distal tibiofibular syndesmosis fixing device can stably fix the distal tibiofibular fracture of the distal tibiofibular bone, the overall stabilizing effect is good, the distal tibiofibular fracture can recover the original distal tibiofibular anatomical form conveniently, and the distal tibiofibular syndesmosis fixing effect is improved. Meanwhile, through the design of the posterior hillock hook and the anterior hillock hook, the far end of the medial malleolus skeleton can be supported, and the fitting effect with the medial malleolus skeleton is good.

Description

Technical Field

[0001] The invention relates to the technical field of orthopedic medical instruments, in particular to a medial malleolus compression locking hook bone plate. Background Art

[0002] Medial malleolus fracture refers to the interruption of the integrity or continuity of the medial malleolus bone, which is mostly caused by external force and requires timely diagnosis and treatment to promote healing and functional recovery. Medial malleolus fracture is caused by direct or indirect external violence on the ankle, which will cause stress concentration at the medial malleolus, exceeding its tolerance limit and causing fracture.

[0003] In this regard, China's application announcement number: CN219397518U discloses a plate-loop-anchor internal fixation system for tibiofibular syndesmotic injury combined with ankle fracture, which belongs to the field of medical device technology, including a bone plate arranged on one side of the fibula, the bone plate is provided with a plurality of pressure holes arranged along its length direction, and a pressure screw threadedly connected to the fibula is inserted into the pressure hole, the bone plate is provided with a loop plate mounting hole and a locking hole, and a locking screw for fixing the bone plate is inserted into the locking hole, and also includes a loop plate, a loop ring and an anchor. When the plate-loop-anchor internal fixation system is in use, the loop plate is fixed to the bone plate on the fibula side, which can achieve the fixation of the fibula fracture; the loop plate and the anchor are flexibly connected through an adjustable loop ring, which can achieve the elastic fixation of the tibiofibular syndesmotic, maintain the micro-motion characteristics of the tibiofibular syndesmotic fixation, and the overall function is perfect and practical.

[0004] In this regard, China's application announcement number: CN104248466B discloses a lateral malleolus bone fracture plate, including a long strip main board and a first wing plate and a second wing plate integrally formed on one side of the main board near the end; the main board is composed of a first plate body, a second plate body and a third plate body connected in sequence, the first plate body is provided with 2-6 locking and pressurizing holes and a first pinhole; the second plate body is provided with a locking and pressurizing sliding hole and a first locking hole; the third plate body is provided with a second locking hole and a third locking hole; a circular universal hole plate is formed at the end of the first wing plate, and a universal locking hole is formed in the middle of the universal hole plate; a circular locking hole plate is formed at the end of the second wing plate, and a fifth locking hole is formed in the middle of the locking hole plate, and the axes of the locking holes are not parallel to each other. The main board cooperates with the two wing plates to ensure that there is no displacement between the bone fracture plate and the lateral malleolus, which is conducive to faster recovery of the patient and ensures the treatment effect.

[0005] In view of the comminuted compression of the medial malleolus and the severe osteoporosis in elderly patients, there are few internal fixation options for medial malleolus fractures. They are only fixed with hollow screws, which have uncertain stability and no obvious anatomical landmarks during intraoperative reduction. The existing medial malleolus fixation plates cannot meet the requirements of early weight-bearing activities when used. Therefore, the existing medial malleolus plates are difficult to restore the original anatomical morphology of the medial malleolus and provide satisfactory stability for the above-mentioned types of medial malleolus fractures. Therefore, it is urgent to improve and perfect the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a medial malleolus compression locking hook bone plate to solve the problem in the above-mentioned background technology that there are few internal fixation options for medial malleolus fractures due to comminuted compression of the medial malleolus, as well as elderly patients with severe osteoporosis. The fixation only relies on hollow screws, the stability is uncertain, and there are no obvious anatomical landmarks for intraoperative reduction. The existing medial malleolus fixation bone plates cannot meet the requirements of early weight-bearing activities when used. Therefore, the existing medial malleolus bone plates are difficult to restore the original anatomical morphology of the medial malleolus and provide satisfactory stability for the above-mentioned types of medial malleolus fractures.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a medial malleolus compression locking hook bone plate, comprising a medial malleolus bone and a bone plate body, wherein the bone plate body is mounted on the outer surface of the medial malleolus bone, wherein the interior of the bone plate body is provided with a locking pressure hole, a syndesmotic fixation channel, a horizontal locking hole and a medial malleolus compression hole in sequence from top to bottom, wherein two groups of the locking pressure holes are provided, wherein the locking pressure holes and the locking pressure screws are adapted to each other, and wherein the horizontal locking holes and the horizontal locking screws are adapted to each other;

[0008] Anterior colliculus hook, the anterior colliculus hook is installed on the lower end surface of the bone plate body, and the outer surface of the medial malleolus bone is provided with a posterior colliculus hook;

[0009] The anterior colliculus hook has the same structure as the posterior colliculus hook. The locking and pressurizing hole is divided into a locking screw hole and a pressurizing screw hole, which can be drilled and screwed into a pressurizing screw and a locking screw. The tibiofibular syndesmotic fixation channel has a tibiofibular screw direction thread, which can be screwed onto a guide for retrograde drilling to introduce a tibiofibular syndesmotic fixation object (such as a steel plate with a loop).

[0010] The horizontal locking holes are divided into sagittal forward, backward and parallel locking holes, and are all parallel to the ankle joint direction in the cross section, and can be screwed into locking screws;

[0011] The medial malleolus pressure hole is a pressure hole parallel to the medial malleolus joint surface, and can be screwed into a medial malleolus pressure screw;

[0012] The bone plate body is made of implantable metal.

[0013] Preferably, the locking compression screw, the horizontal locking screw and the medial malleolus compression screw are all mounted on the plate body and screwed into the interior of the medial malleolus bone.

[0014] Preferably, the screw diameter of the locking compression screw is 3.5 mm, and the distal tibiofibular syndesmotic fixation channel has a distal tibiofibular screw directional thread, and the screw can be screwed onto a guide for retrograde drilling to introduce a distal tibiofibular internal fixator such as a looped steel plate.

[0015] Preferably, six groups of the horizontal locking holes and the horizontal locking screws are provided, and the diameter of the horizontal locking screws is 2.7 mm.

[0016] Preferably, the medial malleolus pressure hole and the medial malleolus pressure screw are adapted to each other, and the diameter of the medial malleolus pressure screw is 2.7 mm.

[0017] Preferably, the anterior colliculus hook and the posterior colliculus hook both fit the anterior and posterior colliculus of the medial malleolus.

[0018] Preferably, the locking compression screw, the horizontal locking screw and the medial malleolus compression screw are all made of implantable metal materials.

[0019] Preferably, the cross section of the distal tibiofibular joint fixation channel is on a vertical line at the center of the distal tibiofibular joint line.

[0020] Preferably, the cross-section of the horizontal locking screw is parallel to the horizontal screws in different directions of the joint surface, and the direction of the medial malleolus compression screw is parallel to the medial malleolus joint surface.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The medial malleolus compression locking hook bone plate, after the fracture is well reduced, the posterior colliculus hook and the anterior colliculus hook are hooked on the anterior and posterior colliculus of the medial malleolus bone, the bone plate body is attached to the cortical bone of the lateral bone of the medial malleolus, and the locking compression screw and the medial malleolus compression screw are screwed into the locking compression hole and the medial malleolus compression hole respectively; finally, the horizontal locking screw is screwed into the hole through the horizontal locking hole in sequence by measuring the depth; if the tibiofibular syndesmosis injury is combined, the hole can be turned retrogradely through the tibiofibular syndesmosis fixation channel, and the plate with a loop is introduced to fix the tibiofibular syndesmosis. This design can stably fix the medial malleolus fracture of the medial malleolus bone, and the overall stabilization effect is good. The above-mentioned fixation design can make it easy to restore the original anatomical morphology of the medial malleolus at the medial malleolus fracture site. At the same time, the design of the posterior colliculus hook and the anterior colliculus hook can support the distal end of the medial malleolus bone, and the fit effect with the medial malleolus bone is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 A schematic side view of the structure;

[0025] Figure 3 It is a three-dimensional schematic diagram of the main structure of the bone fracture plate of the present invention;

[0026] Figure 4 A schematic diagram of the second viewing angle of the main structure of the bone fracture plate of the present invention;

[0027] Figure 5 It is a three-dimensional schematic diagram of the structure of the medial malleolus bone and the bone plate body of the present invention;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of the structure from a second perspective.

[0029] In the figure: 1. Medial malleolus bone; 2. Plate body; 3. Locking and compression hole; 4. Distal tibiofibular syndesmotic fixation channel; 5. Horizontal locking hole; 6. Medial malleolus compression hole; 7. Anterior colliculus hook; 8. Posterior colliculus hook; 9. Locking and compression screw; 10. Horizontal locking screw; 11. Medial malleolus compression screw. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-6 , an embodiment provided by the present invention:

[0032] The medial malleolus compression locking hook bone plate comprises a medial malleolus bone 1 and a bone plate body 2, wherein the bone plate body 2 is mounted on the outer surface of the medial malleolus bone 1, and the inside of the bone plate body 2 is provided with a locking and pressurizing hole 3, a syndesmotic fixation channel 4, a horizontal locking hole 5 and a medial malleolus compression hole 6 in sequence from top to bottom, wherein the locking and pressurizing hole 3 is provided with two groups, the locking and pressurizing hole 3 and the locking and pressurizing screw 9 are mutually adapted, and the horizontal locking hole 5 and the horizontal locking screw 10 are mutually adapted;

[0033] Anterior colliculus hook 7, the anterior colliculus hook 7 is mounted on the lower end surface of the bone plate body 2, and a posterior colliculus hook 8 is disposed on the outer surface of the medial malleolus bone 1;

[0034] The anterior colliculus hook 7 and the posterior colliculus hook 8 have the same structure. The locking and pressurizing hole 3 is divided into a locking screw hole and a pressurizing screw hole, which can be drilled and screwed into a pressurizing screw and a locking screw. The distal tibiofibular syndesmotic fixation channel 4 can be reversed to introduce a distal tibiofibular syndesmotic fixation object (such as a steel plate with a loop).

[0035] The horizontal locking holes 5 are divided into sagittal forward, backward and parallel locking holes and are all parallel to the ankle joint in the cross section, and can be screwed into locking screws;

[0036] The medial malleolus pressure hole 6 is a pressure hole parallel to the medial malleolus joint surface, and can be screwed into the medial malleolus pressure screw 11;

[0037] The plate body 2 is made of implantable metal. First, after the fracture is well reduced, the anterior colliculus hook 7 and the posterior colliculus hook 8 are hooked on the anterior and posterior colliculus of the medial malleolus bone 1, and the plate body 2 is attached to the cortical bone of the lateral bone of the medial malleolus, and the locking compression screw 9 and the medial malleolus compression screw 11 are screwed into the locking compression hole 3 and the medial malleolus compression hole 6 respectively; finally, the horizontal locking screw 11 is screwed in through the horizontal locking hole 5 by turning the hole in sequence to measure the depth; if the tibiofibular syndesmosis injury is combined, the hole can be turned retrogradely through the tibiofibular syndesmotic fixation channel 4, and a steel plate with a loop is introduced to fix the tibiofibular syndesmosis. This design can stably fix the medial malleolus fracture of the medial malleolus bone, and the overall stabilization effect is good. The above-mentioned fixation design can make it easy to restore the original anatomical morphology of the medial malleolus at the medial malleolus fracture site. At the same time, the design of the posterior colliculus hook 8 and the anterior colliculus hook 7 can support the distal end of the medial malleolus bone, and the fit effect with the medial malleolus bone is good.

[0038] The locking compression screw 9 , the horizontal locking screw 10 and the medial malleolus compression screw 11 are all mounted on the bone plate body 2 and screwed into the interior of the medial malleolus bone 1 .

[0039] The screw diameter of the locking compression screw 9 is 3.5 mm. The distal tibiofibular syndesmotic fixation channel 4 has a distal tibiofibular screw directional thread, and the screw can be screwed onto a guide for retrograde drilling to introduce a distal tibiofibular internal fixator such as a looped steel plate.

[0040] There are six groups of horizontal locking holes 5 and horizontal locking screws 10, and the diameter of the horizontal locking screws 10 is 2.7 mm.

[0041] The medial malleolus pressure hole 6 and the medial malleolus pressure screw 11 are adapted to each other, and the diameter of the medial malleolus pressure screw 11 is 2.7 mm.

[0042] The anterior colliculus hook 7 and the posterior colliculus hook 8 are both fitted with the anterior and posterior colliculus of the medial malleolus.

[0043] The locking compression screw 9, the horizontal locking screw 10 and the medial malleolus compression screw 11 are all made of implantable metal materials.

[0044] The cross section of the tibiofibular joint fixation channel 4 is on the vertical line of the center of the tibiofibular joint connection line. The cylindrical stand in the tibiofibular joint fixation channel 4 can intuitively display the approximate position of the tibiofibular joint fixation channel. Figure 6 .

[0045] The cross section of the horizontal locking screw 10 is parallel to the joint surface, and the direction of the medial malleolus compression screw 11 is parallel to the joint surface of the medial malleolus.

[0046] Working principle: When in use, first reposition the fracture well, then hook the anterior colliculus hook 7 and the posterior colliculus hook 8 on the anterior and posterior colliculus of the medial malleolus bone 1, attach the bone plate body 2 to the cortical bone of the lateral side of the medial malleolus, and screw in the locking and pressurizing hole 3, the tibiofibular joint fixation channel 4 and the medial malleolus pressurizing hole 6, respectively; finally, turn the hole in turn through the horizontal locking hole 5 to measure the depth and screw in the horizontal locking screw 10; if the tibiofibular joint is injured, turn the hole in retrograde through the tibiofibular joint fixation channel 4, introduce the steel plate with loop, and fix the tibiofibular joint. The above is all the working principles of the present invention.

[0047] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A medial malleolus compression locking hook bone plate, comprising a medial malleolus bone (1) and a bone plate body (2), characterized in that: The bone plate body (2) is mounted on the outer surface of the medial malleolus bone (1), and the interior of the bone plate body (2) is provided with a locking pressure hole (3), a tibiofibular joint fixing channel (4), a horizontal locking hole (5) and a medial malleolus pressure hole (6) in sequence from top to bottom. The locking pressure hole (3) is provided in two groups, and the locking pressure hole (3) and the locking pressure screw (9) are mutually compatible, and the horizontal locking hole (5) and the horizontal locking screw (10) are mutually compatible; An anterior colliculus hook (7), the anterior colliculus hook (7) is mounted on the lower end surface of the bone fracture plate body (2), and a posterior colliculus hook (8) is arranged on the outer surface of the medial malleolus bone (1); The anterior colliculus hook (7) and the posterior colliculus hook (8) have the same structure. The locking and pressurizing hole (3) is divided into a locking screw hole and a pressurizing screw hole, which can be drilled and screwed into a pressurizing screw and a locking screw. The tibiofibular syndesmotic fixation channel (4) has a tibiofibular syndesmotic screw directional thread, which can be screwed onto a guide for retrograde drilling to introduce a tibiofibular syndesmotic fixation object (such as a steel plate with a loop). The horizontal locking holes (5) are divided into sagittal forward, backward and parallel locking holes and are all parallel to the ankle joint direction in the cross section, and can be screwed into locking screws; The medial malleolus pressure hole (6) is a pressure hole parallel to the medial malleolus joint surface, and can be screwed into a medial malleolus pressure screw (11); The bone fracture plate body (2) is made of implantable metal.

2. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The locking compression screw (9), the horizontal locking screw (10) and the medial malleolus compression screw (11) are all mounted on the bone plate body (2) and screwed into the interior of the medial malleolus bone (1).

3. The medial malleolus compression locking hook bone plate according to claim 2, characterized in that: The screw diameter of the locking compression screw (9) is 3.5 mm. The distal tibiofibular syndesmotic fixation channel (4) has a distal tibiofibular screw directional thread, which can be used to screw the screw onto a guide for retrograde drilling to introduce a distal tibiofibular internal fixator such as a steel plate with a loop.

4. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The horizontal locking holes (5) and the horizontal locking screws (10) are both provided in six groups, and the diameter of the horizontal locking screws (10) is 2.7 mm.

5. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The medial malleolus pressure hole (6) and the medial malleolus pressure screw (11) are adapted to each other, and the diameter of the medial malleolus pressure screw (11) is 2.7 mm.

6. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The anterior colliculus hook (7) and the posterior colliculus hook (8) are both fitted with the anterior and posterior colliculus of the medial malleolus.

7. The medial malleolus compression locking hook bone plate according to claim 2, characterized in that: The locking compression screw (9), the horizontal locking screw (10) and the medial malleolus compression screw (11) are all made of implantable metal materials.

8. The medial malleolus compression locking hook bone plate according to claim 1, characterized in that: The cross section of the distal tibiofibular joint fixation channel (4) is on the vertical line of the center of the distal tibiofibular joint line.

9. The medial malleolus compression locking hook bone plate according to claim 2, characterized in that: The cross section of the horizontal locking screw (10) is parallel to the horizontal screws in different directions of the joint surface, and the direction of the medial malleolus compression screw (11) is parallel to the medial malleolus joint surface.

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