Anterolateral mipo plate for mid-distal humeral fractures

Abstract

The application belongs to the field of medical devices, and particularly relates to a humeral shaft middle-distal fracture anterolateral MIPPO bone plate, which comprises a bone plate main body, a plurality of screw holes one are uniformly arranged on the proximal end to the middle end and the distal end of the bone plate main body, a plurality of screw holes two are arranged on the distal end of the bone plate main body, the diameter of the screw hole one is greater than the diameter of the screw hole two, the screw holes of the proximal end and the distal end of the bone plate are respectively provided with screw holes matched with screws of different diameters, the structure of the bone plate is designed on the basis of CT scanning data of humeral bones of a plurality of patients, and the bone plate is designed according to the structure of the reconstructed three-dimensional model of the humeral bone, so that the bone plate is more in line with the anatomical characteristics of the patient, and the bone plate is more suitable for anterolateral MIPPO surgery in cooperation with a matching device, indirect reduction of a fracture can be realized, the operation is further simplified, the operation time is saved, the amount of bleeding is reduced, and the surgical trauma is reduced.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, and in particular relates to a MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft. Background Technology

[0002] Fractures of the mid-to-distal humeral shaft are common in athletes during training. They are more likely to occur during improper throwing, wrestling, and arm wrestling movements. The radial nerve passes around this area, and traditional open reduction and internal fixation surgery is highly invasive, time-consuming, and prone to complications, with a high risk of radial nerve injury.

[0003] The anatomy of the mid-distal humeral shaft is quite unique, gradually transitioning from a cylindrical shape to a triangular shape. As a result, the bone surface is irregular. A disadvantage of traditional minimally invasive fracture surgery is the lack of available anatomical plates. If straight plates are used, angular deformities may occur at the fracture site. Therefore, the plates need to be pre-bent during surgery, which prolongs the operation time because there is no normal anatomical structure for comparison, and the pre-bent plates do not perfectly match the bone surface.

[0004] For example, the clinical distal humeral fracture bone plate of patent application number CN201210018341.2 has a first shank-shaped plate and a second shank-shaped plate, which is roughly square. The main body width of the first shank is narrower than that of the second shank. The end of the first shank away from the second shank has an arc-shaped end, and the end of the second shank away from the first shank has a slightly upward-sloping, roughly straight end. The left end of the second shank connected to it has a roughly square arc shape. The left side of the connection between the second shank and the first shank is... The edge is curved and slightly inclined towards the center of the main body of the second support plate. The right edge of the connection between the second support plate and the first support plate is curved inward and connected to the upper edge of the second support plate. In the main body of the first support plate, multiple fixing screw through holes are provided at approximately the center position along the length direction and the width direction. In the main body of the second support plate, two rows of fixing screw through holes are distributed approximately evenly along the width direction. However, the disadvantage of this technical solution is that the screw hole diameters at the proximal and distal ends of the bone plate are the same, which is not suitable for the anatomical structure of bone. Summary of the Invention

[0005] The purpose of this invention is to provide an anterolateral MIPPO bone plate for fractures of the mid-distal humeral shaft, in order to solve the problems in the prior art. The specific technical solution is as follows:

[0006] A MIPPO bone plate for anterolateral fracture of the mid-distal humeral shaft includes a bone plate body. The bone plate body has a plurality of screw holes I evenly distributed from the proximal to the middle and distal ends. The bone plate body has a plurality of screw holes II distributed at the distal end. The diameter of the screw holes I is larger than the diameter of the screw holes II.

[0007] Furthermore, the distal end of the bone plate body is flat, which can be adapted to the anterior surface anatomy of the distal lateral condyle of the humerus.

[0008] Furthermore, the first screw hole is composed of a non-threaded pressure hole and a threaded locking hole. The locking hole can be used to fit a locking screw with a diameter of 3.5 mm, and the second screw hole can be used to fit a locking screw with a diameter of 3.0 mm.

[0009] Furthermore, the second screw hole is a universal hole, which is used to lock the screw in a universal position.

[0010] Furthermore, the screw holes are provided in two rows and are staggered.

[0011] Furthermore, screw hole one and screw hole two have a tapered opening structure, with the tip of the tapered opening structure facing downwards.

[0012] Furthermore, the bone plate body is composed of a proximal plate, one or more long plates, one or more short plates, and a distal plate. The proximal plate, long plate, short plate, and distal plate are all provided with positioning holes. The inner side of the proximal plate, long plate, short plate, and distal plate is provided with an elongated groove. The proximal plate, long plate, short plate, and distal plate are slidably connected in pairs, and a soft pad is provided at the connection point.

[0013] Furthermore, the short plate is equipped with a spring 1, one end of which is fixed inside the short plate and the other end of which is fixed to one side of the functional plate. The short plate and the functional plate are slidably connected. Three limiting posts 1 are fixed to the other side of the functional plate. Limiting posts 1 and 2 are slidably connected. Limiting posts 2 are fixed to the reinforcing plate. The short plate and the reinforcing plate are slidably connected. The reinforcing plate is fixed to one end of spring 2 and the other end of spring 2 is fixed inside the short plate. The long plate is equipped with a spring 3, one end of which is fixed inside the long plate and the other end of which is fixed to a limiting ball. The long plate and the limiting ball are slidably connected. The limiting ball is slidably connected to the drug dispensing device.

[0014] Furthermore, the dispensing device includes a housing with a second slot. A plug is slidably connected to the end of the housing. A nano battery is fixed inside the housing. The nano battery is electrically connected to a controller, which is electrically connected to a display screen and a nano motor. A screw is connected to the front end of the nano motor. The screw is threadedly connected to a square slider. The housing is slidably connected to the square slider. One end of the square slider is fixedly connected to a push rod. The other end of the push rod slides into the interior of a miniature medicine bottle and is fixed to a movable plug. The miniature medicine bottle is fixed inside the housing and slidably connected to the movable plug. The miniature medicine bottle has a medicine inlet that connects to the outside of the housing. The medicine inlet is blocked by a piston. One end of the miniature medicine bottle is fixedly connected to a medicine outlet tube. The medicine outlet tube is connected to a hollowed-out layer inside the housing. Multiple medicine outlet holes are provided between the outside of the housing and the hollowed-out layer. All of the medicine outlet holes are blocked by pistons.

[0015] Furthermore, the dispensing device is located inside the long slot of the long plate, the outer shell is slidably connected to two limiting balls, and the plug is slidably connected to two limiting balls.

[0016] The advantages of this invention are:

[0017] 1. The proximal and distal ends of the bone plate are equipped with screw holes for screws of different diameters to adapt to the anatomical structure of the bone.

[0018] 2. The structural design of the bone plate is based on CT scan data of the humerus from multiple patients and is designed according to the reconstructed three-dimensional model of the humerus, which is more in line with the anatomical characteristics of Chinese people.

[0019] 3. When used with complementary equipment, it is more suitable for anterolateral MIPPO surgery, which can achieve indirect reduction of fractures, further simplifying the surgical procedure, saving surgical time, reducing bleeding, and reducing surgical trauma. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 ;

[0023] Figure 4 This is a schematic diagram of the overall structure of the present invention. Figure 4 ;

[0024] Figure 5 This is a schematic diagram of the overall structure of the present invention. Figure 5 ;

[0025] Figure 6 This is a schematic diagram of the overall structure of the present invention. Figure 6 ;

[0026] Figure 7 This is a schematic diagram of the main structure of the bone plate of the present invention;

[0027] Figure 8 This is a schematic diagram of the drug dispensing device of the present invention. Figure 1 ;

[0028] Figure 9 This is a schematic diagram of the drug dispensing device of the present invention. Figure 2 ;

[0029] Figure 10 This is a schematic diagram of the drug dispensing device of the present invention. Figure 3 ;

[0030] Explanation of markings in the diagram:

[0031] 1. Bone plate body; 101. Proximal plate; 102. Long plate; 103. Short plate; 104. Distal plate; 2. Screw hole one; 3. Screw hole two; 4. Positioning hole; 5. Long slot; 6. Soft pad; 7. Spring one; 8. Functional plate; 9. Limiting post one; 10. Limiting post two; 11. Reinforcing plate; 12. Spring two; 13. Spring three; 14. Limiting ball; 15. Drug delivery device; 1501. External Shell; 1502, slot two; 1503, plug; 1504, nano battery; 1505, controller; 1506, display screen; 1507, nano motor; 1508, screw; 1509, square slider; 1510, push rod; 1511, miniature medicine storage bottle; 1512, movable plug; 1513, medicine inlet; 1514, medicine outlet tube; 1515, hollowed-out layer; 1516, medicine outlet hole. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Example 1

[0035] like Figure 1-10 As shown, a MIPPO bone plate for anterolateral fracture of the mid-distal humeral shaft includes a bone plate body 1. The bone plate body 1 has a plurality of screw holes 1 2 evenly distributed from the proximal to the middle and distal ends. The bone plate body 1 has a plurality of screw holes 2 3 at the distal end. The diameter of the screw holes 1 2 is larger than the diameter of the screw holes 2 3. The screw holes 1 2 are composed of a non-threaded compression hole and a threaded locking hole. The locking hole can be used to fit a locking screw with a diameter of 3.5 mm. The screw holes 2 3 can be used to fit a locking screw with a diameter of 3.0 mm. The distal end of the bone plate body 1 is flat and can be adapted to the anterior surface anatomy of the distal lateral condyle of the humerus.

[0036] The working principle of the above technical solution is as follows: Multiple screw holes 2 can fix the proximal to mid-distal end of the bone plate body 1 to the humeral shaft. Multiple screw holes 2 correspond to multiple screws, resulting in a more secure and stable fixation. The diameter of screw holes 2 is 3.5mm, and the diameter of screw holes 3 is 3.0mm. Designed according to the human skeletal structure, the diameter of the corresponding screws is perfectly matched for fixation at the mid- and distal ends of the humerus, without causing bone damage and ensuring firm fixation. The distal end of the bone plate body 1 is flat, which can conform to the anterior surface anterior to the lateral condyle of the distal humerus. The bone plate body 1 is suitable for the mid-humerus... For the semi-spiral anatomical structure with significant distal displacement, the technical procedure for minimally invasive surgery using the anterolateral approach to treat throwing fractures of the humerus is as follows: The patient lies supine with the affected limb abducted and placed on a brace. After disinfection and draping, a 4-5 cm incision is made along the surface of the lateral condyle of the humerus, palpable at the base. The skin and subcutaneous tissue are incised layer by layer. Reaching the periosteum, a channel is established subperiosteally with the forearm in pronation. A novel anatomical plate of appropriate length is selected. A 4-5 cm incision is made distal to the proximal anterior midline plate. The intermuscular space between the long and short heads of the biceps brachii is dissected and accessed. The locking plate is then inserted... The bone plate is inserted through the bone tunnel and traction reduction is performed to ensure that the distal and proximal bone plates conform to the bone. Indirect reduction of the fracture ends is achieved. After temporary fixation and C-arm fluoroscopy to confirm proper plate placement, and once satisfactory fracture reduction is achieved, three locking screws are placed proximally and four distally. The incision is closed with interrupted sutures. Drainage is not required. The entire procedure takes approximately 50-60 minutes, with bleeding generally controlled to within 100ml. Key points of the procedure include maintaining forearm pronation and elbow flexion at 90° during bone tunnel establishment to keep the radial nerve relaxed and ensure the tunnel is fully open. The incision should be made subperiosteally. If subperiosteal incision is not possible, it should be made as close to the periosteum as possible. Intramuscular incisions are strictly prohibited. The distal incision should not extend more than 7 cm above the lateral epicondyle of the humerus. Here, the radial nerve passes posteriorly, around the lateral aspect of the humerus, and then anteriorly to enter the brachioradialis muscle. If difficulties arise during the procedure and the incision needs to be lengthened, the radial nerve may need to be exposed and protected. Generally, exposure of the radial nerve is not necessary following this procedure. If the patient has a butterfly-shaped bone fragment that has rotated, it must be rotated back to its normal position. Functional exercises can begin after the anesthesia has worn off. Patients are typically discharged approximately 3 days post-surgery. Follow-up appointments are scheduled at 1 month, 3 months, 6 months, and 1 year post-surgery.

[0037] The main body of the bone plate 1 is fixed with screws of different diameters at its proximal and distal ends, adapting to the anatomical structure of the bone. Furthermore, the structural design of the bone plate is based on CT scan data of the humerus from multiple patients and is designed according to the reconstructed three-dimensional model of the humerus, making it more consistent with the patient's anatomical characteristics. With the accompanying equipment, it is more suitable for anterolateral MIPPO surgery. This invention can save the time of pre-bending the bone plate, and by fitting the two ends of the bone plate to the bone surface, indirect reduction of the fracture can be achieved, further simplifying the surgical operation, saving surgical time, reducing bleeding, and reducing surgical trauma.

[0038] Example 2

[0039] like Figure 1-10 As shown, screw hole 3 is a universal hole, which is used to lock the screw in a universal position.

[0040] The working principle of the above technical solution: Screw hole 2 3 is a universal hole, and the screw locking direction is designed to be universal, which not only facilitates surgical operation, but also avoids entering the coronal fossa or olecranon fossa.

[0041] Example 3

[0042] like Figure 1-10 As shown, the screw holes 3 are provided in two rows and are staggered.

[0043] The working principle of the above technical solution is as follows: Screw holes 2 3 are provided in two rows, which are staggered to increase the holding force and increase the firmness between the bone plate and the bone.

[0044] Example 4

[0045] like Figure 1-10 As shown, both screw hole 2 and screw hole 3 are tapered structures with the tips of the tapered structures pointing downwards.

[0046] The working principle of the above technical solution is as follows: The openings of screw hole 1 2 and screw hole 2 3 are both tapered downwards. The screw passes through the tapered openings of screw hole 1 2 and screw hole 2 3 and is fixed to the bone. The nut on the screw can be inserted into the tapered opening and positioned in the middle of the tapered opening. This can fix the bone plate and prevent the nut from being exposed, which would affect the surgical operation.

[0047] Example 5

[0048] like Figure 1-10 As shown, the bone plate body 1 is composed of a proximal plate 101, one or more long plates 102, one or more short plates 103, and a distal plate 104. The proximal plate 101, long plate 102, short plate 103, and distal plate 104 are all provided with positioning holes 4. The inner side of the proximal plate 101, long plate 102, short plate 103, and distal plate 104 are all provided with elongated grooves 5. The proximal plate 101, long plate 102, short plate 103, and distal plate 104 are slidably connected in pairs, and soft pads 6 are provided at the connection points.

[0049] The working principle of the above technical solution is as follows: The proximal plate 101 and the distal plate 104 are components at both ends of the main body 1 of the bone plate. One or more long plates 102 and short plates 103 can be installed between the proximal plate 101 and the distal plate 104. The actual number installed depends on the length of the middle and distal humeral shaft of the patient. The proximal plate 101, long plate 102, short plate 103 and distal plate 104 are slidably spliced ​​together in pairs, and the screw holes 2 between the two spliced ​​plates coincide. When the screw is fixed through the screw hole 2, the two plates will also be secured. The splicing plates are further fixed. The proximal plate 101, long plate 102, short plate 103 and distal plate 104 are all provided with positioning holes 4. Positioning pins can be used to pre-fix the bone plates to the bone through the positioning holes 4, which is quick and convenient for subsequent adjustments. The inner side of the proximal plate 101, long plate 102, short plate 103 and distal plate 104 are all provided with long grooves 5, which can accelerate blood circulation and make the bone grow faster. The splicing of two splicing plates compresses the soft pad 6 to deform. The function of the soft pad 6 is to make the splicing of two splicing plates more compact.

[0050] Example 6

[0051] like Figure 1-10 As shown, the short plate 103 is provided with a spring 7. One end of the spring 7 is fixed inside the short plate 103, and the other end of the spring 7 is fixed to one side of the functional plate 8. The short plate 103 is slidably connected to the functional plate 8. Three limiting posts 9 are fixed on the other side of the functional plate 8. The limiting posts 9 are slidably connected to the limiting posts 10. The limiting posts 10 are fixed on the reinforcing plate 11. The short plate 103 is slidably connected to the reinforcing plate 11. The reinforcing plate 11 is fixedly connected to one end of the spring 12. The other end of the spring 12 is fixed inside the short plate 103. The long plate 102 is provided with a spring 13. One end of the spring 13 is fixed inside the long plate 102, and the other end of the spring 13 is fixed on the limiting ball 14. The long plate 102 is slidably connected to the limiting ball 14. The limiting ball 14 is slidably connected to the dispensing device 15.

[0052] The working principle of the above technical solution is as follows: The exposed end of the functional plate 8 has a groove. Using a small needle-like tool to move the functional plate 8, the movement of the functional plate 8 compresses the spring 7, causing the three limiting posts 9 to move along with the functional plate 8. The limiting posts 9 separate from the limiting posts 10. Under the elastic force of the spring 12, the reinforcing plate 11 slides outward from within the short plate 103. The reinforcing plate 11 has screw holes, through which screws can be fixed to the bone, further strengthening the bone. To ensure the stability of the bone plate, the functional plate 8 is equipped with three limiting posts 1 9, which can restrict the movement of limiting posts 2 10. The corresponding reinforcing plate 11 can be adjusted to three positions. When the reinforcing plate 11 is pushed into the short plate 103, the limiting posts 1 9 will once again lock the limiting posts 2 10, thereby retracting the reinforcing plate 11 into the short plate 103. In actual use, the short plate 103 can be spliced ​​to any position between the proximal plate 101 and the distal plate 104, thereby changing the position of the reinforcing plate 11, which can be adjusted as needed.

[0053] Example 7

[0054] like Figure 1-10 As shown, the dispensing device 15 includes a housing 1501 with a slot 1502. A plug 1503 is slidably connected to the end of the housing 1501. A nano battery 1504 is fixed inside the housing 1501. The nano battery 1504 is electrically connected to a controller 1505, which is also electrically connected to a display screen 1506 and a nano motor 1507. A screw 1508 is threadedly connected to the front end of the nano motor 1507, which is threadedly connected to a square slider 1509. The housing 1501 is slidably connected to the square slider 1509, which is fixedly connected to one end of a push rod 1510. The other end of 1510 slides into the interior of the miniature medicine bottle 1511 and is fixed to the movable plug 1512. The miniature medicine bottle 1511 is fixed inside the outer shell 1501. The miniature medicine bottle 1511 is slidably connected to the movable plug 1512. The miniature medicine bottle 1511 is provided with a medicine inlet 1513 and is connected to the outside of the outer shell 1501. The medicine inlet 1513 is blocked by the piston. The miniature medicine bottle 1511 is fixedly connected to one end of the medicine outlet tube 1514. The medicine outlet tube 1514 is connected to the hollowed-out layer 1515 inside the outer shell 1501. There are multiple medicine outlet holes 1516 between the outside of the outer shell 1501 and the hollowed-out layer 1515. All of the multiple medicine outlet holes 1516 are blocked by the piston.

[0055] The working principle of the above technical solution is as follows: The drug dispensing device 15 can be inserted into the long slot 5 of the short plate 103. When removing the drug dispensing device 15, a tool similar to tweezers is used to insert the tip of the tool into the two slots 1502 respectively, and the drug dispensing device 15 is pulled outward with force. The nano battery 1504 fixed inside the drug dispensing device 15 can power the display screen 1506 and the nano motor 1507 through the controller 1505. A micro screwdriver is used to turn the knob on the display screen 1506, thereby adjusting the start time and duration of the nano motor 1507, thereby changing the frequency and amount of subsequent drug extrusion. The controller 1505 controls the nano motor 1507 to start, driving the screw. Rotation of 1508 causes the square slider 1509 to move forward within the outer casing 1501, which in turn causes the push rod 1510 to move forward and the moving plug 1512 to move forward. This allows the medication in the miniature storage bottle 1511 to be squeezed from the dispensing tube 1514 into the hollowed-out layer 1515. The piston on the dispensing hole 1516 corresponding to the fracture suture is pulled out in advance, and the medication flows out from the dispensing hole 1516. The medication penetrates deep into the fracture suture and surrounding area to accelerate bone growth and recovery. In actual use, the long plate 102 with the medication dispensing device 15 can be spliced ​​to any position between the proximal plate 101 and the distal plate 104, thereby changing the position of the medication dispensing device 15. The position of the long plate 102 can be adjusted by installing it at the fracture location.

[0056] Example 8

[0057] like Figure 1-10 As shown, the dispensing device 15 is located in the long slot 5 of the long plate 102, the outer shell 1501 is slidably connected to the two limiting balls 14, and the plug 1503 is slidably connected to the two limiting balls 14.

[0058] The working principle of the above technical solution is as follows: The nano battery 1504 in the drug dispensing device 15 is fully charged in advance. The piston on the drug inlet 1513 is pulled out. The drug is added to the micro drug storage bottle 1511 in advance using a micro needle. The drug inlet 1513 is then blocked with the piston. One end of the outer shell 1501 is pressed into the long plate 102, which drives the limiting ball 14 to move into the long plate 102. This causes the spring 13 to be compressed. When one end of the outer shell 1501 is pressed into a certain position, under the elastic force of the spring 13, part of the volume of the limiting ball 14 rebounds into the outer shell 1501, thereby fixing the outer shell 1501. The plug 1503 installed at the other end of the outer shell 1501 is pressed into the long plate 102 in the same way, thereby fixing the drug dispensing device 15 in the long plate 102.

[0059] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft, characterized in that, The bone plate body (1) includes a plurality of screw holes (2) evenly provided from the proximal end to the middle end and the distal end of the bone plate body (1), and a plurality of screw holes (3) provided at the distal end of the bone plate body (1), and the diameter of the screw holes (2) is larger than the diameter of the screw holes (3). The main body of the bone plate (1) consists of a proximal plate (101), one or more long plates (102), one or more short plates (103), and a distal plate (104); The long plate (102) is provided with a spring three (13). One end of the spring three (13) is fixed inside the long plate (102), and the other end of the spring three (13) is fixed on the limiting ball (14). The long plate (102) and the limiting ball (14) are slidably connected, and the limiting ball (14) and the dispensing device (15) are slidably connected. The dispensing device (15) includes a housing (1501), a slot (1502) on the housing (1501), a plug (1503) slidably connected to the end of the housing (1501), a nano battery (1504) fixed inside the housing (1501), the nano battery (1504) being electrically connected to a controller (1505), the controller (1505) being electrically connected to a display screen (1506), the controller (1505) being electrically connected to a nano motor (1507), a screw (1508) being connected to the front end of the nano motor (1507), the screw (1508) being threadedly connected to a square slider (1509), the housing (1501) being slidably connected to the square slider (1509), and the square slider (1509) being fixedly connected to one end of a push rod (1510). The other end of the push rod (1510) slides into the inside of the miniature medicine bottle (1511) and is fixed on the moving plug (1512). The miniature medicine bottle (1511) is fixed inside the outer shell (1501). The miniature medicine bottle (1511) is slidably connected to the moving plug (1512). The miniature medicine bottle (1511) is provided with a medicine inlet (1513) and is connected to the outside of the outer shell (1501). The medicine inlet (1513) is blocked by the piston. The miniature medicine bottle (1511) is fixedly connected to one end of the medicine outlet tube (1514). The medicine outlet tube (1514) is connected to the hollow layer (1515) inside the outer shell (1501). There are multiple medicine outlet holes (1516) between the outside of the outer shell (1501) and the hollow layer (1515). All of the multiple medicine outlet holes (1516) are blocked by the piston.

2. The MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft according to claim 1, characterized in that, The distal end of the bone plate body (1) is flat and can be adapted to the anterior surface anatomy of the distal lateral condyle of the humerus.

3. The MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft according to claim 1, characterized in that, The screw hole one (2) is composed of a non-threaded pressure hole and a threaded locking hole. The locking hole can be used to fit a locking screw with a diameter of 3.5 mm. The screw hole two (3) can be used to fit a locking screw with a diameter of 3.0 mm.

4. The MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft according to claim 1, characterized in that, The screw hole 2 (3) is a universal hole, which is used to lock the screw in a universal position.

5. The MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft according to claim 1, characterized in that, The screw holes (3) are arranged in two rows and are staggered.

6. The MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft according to claim 1, characterized in that, Both screw hole one (2) and screw hole two (3) are tapered structures with the tip of the tapered structure pointing downwards.

7. The MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft according to claim 1, characterized in that, The proximal plate (101), long plate (102), short plate (103) and distal plate (104) are all provided with positioning holes (4), and the inner side of the proximal plate (101), long plate (102), short plate (103) and distal plate (104) are all provided with long slots (5). The proximal plate (101), long plate (102), short plate (103) and distal plate (104) are slidably connected in pairs, and soft pads (6) are provided at the connection points.

8. The MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft according to claim 7, characterized in that, The short plate (103) is provided with a spring (7). One end of the spring (7) is fixed inside the short plate (103), and the other end of the spring (7) is fixed to one side of the functional plate (8). The short plate (103) is slidably connected to the functional plate (8). Three limiting posts (9) are fixed on the other side of the functional plate (8). The limiting posts (9) are slidably connected to the limiting posts (10). The limiting posts (10) are fixed on the reinforcing plate (11). The short plate (103) is slidably connected to the reinforcing plate (11). The reinforcing plate (11) is fixedly connected to one end of the spring (12), and the other end of the spring (12) is fixed inside the short plate (103).

9. The MIPPO bone plate for anterolateral fractures of the mid-distal humeral shaft according to claim 7, characterized in that, The dispensing device (15) is located inside the long slot (5) of the long plate (102), the outer shell (1501) is slidably connected to the two limiting balls (14), and the plug (1503) is slidably connected to the two limiting balls (14).

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