Proximal humerus fracture internal support repair system

Abstract

The application relates to a proximal humerus fracture internal support repair system, which comprises a humeral head support piece, a humeral neck support piece, a humeral shaft support piece and a fixing piece, and realizes reduction fixation of proximal humerus fracture blocks and structural support of a humeral head-humeral shaft. Through the above scheme, the proximal humerus fracture internal support repair system can effectively treat proximal humeral head fractures, so as to realize better reduction and support effects and greater fixation strength, and the repair effect is better, especially for complex proximal humeral head fracture types, such as comminuted fractures, shortening deformities and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical orthopedic surgical medical instruments, in particular to a proximal humerus fracture internal support repair system. BACKGROUND

[0002] Proximal humerus fracture is a common upper limb fracture in clinical practice, and the incidence rate is increasing year by year. Due to the complexity of the fracture form, the treatment of proximal humerus fracture has always been a difficult problem in the treatment of trauma orthopedics. At present, the use of steel plate and screw for fixation of the fracture block on the lateral side of the humerus is a common way. This way has good fixation ability for comminuted fractures of the proximal humerus, but since the main mechanical support structure and the fixing part are concentrated on the lateral side of the humerus, the fixation effect on the medial side of the humerus is not good, especially for the case of fracture on the medial side of the humerus. Simple lateral plate and screw fixation can easily lead to failure of fracture reduction and fixation.

[0003] In addition, intramedullary nail fixation is also a common way. However, it lacks the fixation ability for comminuted fractures of the humeral head, and cannot provide reliable fixation of the fracture block in the early stage and effective mechanical support, so the possibility of fixation failure is large. The intramedullary nail fixation system currently used in clinical practice is not suitable for the reduction and fixation of the bone block of the greater and lesser tuberosities of the humerus, especially for the case of comminuted fracture of the greater and lesser tuberosities of the humeral head. In addition, the existing intramedullary nail and medullary cavity do not match, which can easily cause fixation failure and abnormal blood supply in the medullary cavity and a series of problems.

[0004] It is worth noting that the above two existing implant systems and fixation methods have poor treatment effect for the shortening after proximal humerus fracture, and cannot achieve effective and reliable mechanical support for the humeral head, so there is great limitation for the reduction of humeral head shortening fracture.

[0005] As can be seen from the above, the current medical orthopedic instruments and fixation methods for proximal humerus fracture surgery have many problems in clinical practice, such as the inability to achieve effective fixation for comminuted fractures, the inability to provide effective support for shortening deformity, and the insufficient early mechanical fixation strength leading to failure of fracture fixation, etc. Therefore, a new internal fixation implant system is needed to solve the above problems and achieve effective reduction and fixation of proximal humerus fracture. SUMMARY

[0006] The present application overcomes the shortcomings of the prior art and provides a proximal humerus fracture internal support repair system, which can effectively treat proximal humerus fracture to achieve better reduction and support effect and greater fixation strength, especially for complex proximal humerus fracture types such as comminuted fracture and shortening deformity, and has better repair effect.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: an internal support repair system for proximal humeral fractures, comprising:

[0008] A humeral head support, wherein the humeral head support has an upper end near the shoulder, and the upper end of the humeral head support has a humeral head support slope near its inner edge for supporting the humeral head from the inside, and the humeral head support has a through connection hole that passes through the humeral head support slope.

[0009] A humeral neck support member, wherein the inner side of the humeral neck support member is provided with an inner support surface for supporting the inner edge of the humeral head and neck from the inner side, and the outer side of the humeral neck support member is provided with an outer support surface for supporting the outer edge of the humeral head and neck from the outer side. The humeral head support member is directly or indirectly abutted against the humeral neck support member, the humeral head support member and the humeral neck support member are positioned and connected, and the outer edge of the humeral head support member is flush with the outer edge of the humeral neck support member.

[0010] A humeral shaft support member, wherein the upper end of the humeral shaft support member is connected to the lower end of the humeral head support member or the humeral neck support member, and the lower end of the humeral shaft support member extends into the distal medullary canal of the humerus.

[0011] The fixation device includes a head and a rod. The rod of the fixation device has external threads. The rod of the fixation device passes through the fracture fragment and the connecting hole in sequence. The threaded end of the rod is fixedly connected to the humeral head. The head of the fixation device rests on or under the lateral cortex of the fracture fragment.

[0012] By adopting the above-described scheme, this invention differs from conventional one-piece internal support repair structures. Its main feature is a split structural design: it comprises three main parts, namely the humeral head support, the humeral neck support, and the humeral shaft support. The humeral neck support utilizes anatomical features to achieve effective fixation and provides a base for the humeral head and humeral shaft supports, thus effectively achieving reduction and internal support after humeral head fractures. Secondly, this structure can also utilize fixation devices to achieve dual fixation and reduction of medial and lateral fractures. Thirdly, due to the split positioning connection of the humeral head and humeral neck supports, an external lifting device of a certain thickness can be used. The external lifting device can be embedded between the humeral head and humeral shaft supports to achieve flexible adjustment of the support height. Compared with conventional one-piece internal support repair structures, its flexibility and clinical operability are significantly improved, and it has strong adaptability to different degrees of shortening deformities. Therefore, this split structure offers the following advantages: First, it enables effective fixation of humeral head fractures, addressing proximal fracture issues, especially in cases where fractures occur on both the medial and lateral sides of the humeral head, providing more comprehensive fixation. Second, it provides strong mechanical support for deformed humeral heads, preventing postoperative collapse and deformity, and the support height is adjustable, offering high mobility. In summary, due to its unique advantages, this split structure design offers significant advantages over previous one-piece structures in the field of proximal femoral head fractures, particularly for severe proximal humeral head fractures such as those involving comminuted fractures on both the medial and lateral sides and severe shortening, achieving better clinical outcomes.

[0013] A further feature of the present invention is that the upper end of the humeral shaft support is fixed or integrally connected to the lower end face of the humeral head support, and the humeral neck support is provided with a hollow cavity that penetrates its upper and lower end faces. The shape of the humeral shaft support body is adapted to the hollow cavity, and the humeral shaft support body passes through the hollow cavity.

[0014] By adopting the above scheme, the humeral neck support is first placed at the humeral head and neck position, so that it forms an effective mechanical support platform in the scapular neck. The inner support surface is in contact with the inner edge of the humeral head and neck to prevent the humeral neck support from sinking, and the outer support surface is in contact with the outer edge of the humeral head and neck to achieve effective fit.

[0015] The humeral shaft support is then inserted into the hollow cavity of the humeral neck support, so that the humeral head support is placed inside the humeral head and directly or indirectly abuts against the humeral neck support, while the humeral shaft support is placed inside the medullary cavity of the humeral shaft, so that the humeral head support is tightly placed on the humeral neck support, thus providing effective mechanical support for the humeral head.

[0016] The fixation piece is then passed through the fracture fragment and the threaded hole in sequence to fix the fracture fragment of the humeral head. The diameter of the rod of the fixation piece is perfectly matched with the diameter of the connecting hole.

[0017] A further feature of the present invention is that the upper end of the humeral shaft support is fixed or integrally connected to the lower end face of the humeral neck support, the lower end of the humeral head support is fixed or integrally provided with a humeral shaft proximal connector, the humeral neck support is provided with a cavity adapted to the shape of the humeral shaft proximal connector, and the humeral shaft proximal connector is inserted into the cavity.

[0018] By adopting the above scheme, the humeral neck support is first placed at the humeral head and neck position, so that it forms an effective mechanical support platform in the scapular neck. The inner support surface is in contact with the medial edge of the humeral head and neck to prevent the humeral neck support from sinking, and the outer support surface is in contact with the lateral edge of the humeral head and neck to achieve effective fit. At this time, the humeral shaft support is placed in the medullary cavity of the humeral shaft.

[0019] The proximal humeral shaft connector is then inserted into the cavity of the humeral neck support, so that the humeral head support is placed inside the humeral head and directly or indirectly abuts against the humeral neck support. The proximal humeral shaft connector and the humeral neck support are tightly combined, providing effective mechanical support for the humeral head.

[0020] The fixation piece is then passed through the fracture fragment and the threaded hole in sequence to fix the fracture fragment of the humeral head. The diameter of the rod of the fixation piece is perfectly matched with the diameter of the connecting hole.

[0021] A further feature of the present invention is that it also includes a humeral head lifting member, which is provided with a U-shaped groove. The humeral head lifting member is placed between the humeral head support and the humeral neck support, and the humeral head lifting member is secured to the humeral shaft support through the U-shaped groove.

[0022] By adopting the above scheme, the humeral head elevator is a circular flat pad with a diameter of 18-30 mm and a thickness of 1-3 mm. The radius of the outer semicircular surface of the U-shaped groove is 3-5 mm, and the radius of the outer semicircular surface of the U-shaped groove matches the radius of the humeral shaft support. The distance between the center of the semicircular surface and the outer edge of the humeral head elevator is 4-8 mm. When the humeral neck support is positioned low, the humeral head elevator is placed between the humeral head support and the humeral neck support, and the humeral head elevator is secured in place by the U-shaped groove. On the bony support, there is a device used to elevate the humeral head support to restore normal humeral head height. Multiple devices can be stacked according to clinical needs to achieve effective height elevation and effectively reduce shortening deformities. Multiple humeral head elevators can be stacked according to the patient's anatomical size and the degree of shortening deformity to adjust the elevation height, thus facilitating the fulfillment of different elevation height requirements for the humeral head in clinical practice. The lateral edge of the humeral head elevator is flush with the lateral edge of the humeral head support and the lateral edge of the humeral neck support to achieve effective support for the lateral bone surface.

[0023] A further feature of the present invention is that it also includes a humeral head lifting member, which is provided with a U-shaped groove. The humeral head lifting member is placed between the humeral head support and the humeral neck support, and the humeral head lifting member is secured to the proximal humeral shaft connector through the U-shaped groove.

[0024] By adopting the above scheme, the humeral head elevator is a circular flat pad with a diameter of 18-30 mm and a thickness of 1-3 mm. The radius of the outer semicircular surface of the U-shaped groove is 3-5 mm, and the radius of the outer semicircular surface of the U-shaped groove matches the radius of the humeral shaft support. The distance between the center of the semicircular surface and the outer edge of the humeral head elevator is 4-8 mm. When the humeral neck support is positioned low, the humeral head elevator is placed between the humeral head support and the humeral neck support, and the humeral head elevator is secured in place by the U-shaped groove. The proximal humeral head connector is used to elevate the humeral head support to restore normal humeral head height. Multiple connectors can be stacked to achieve effective height elevation, thus effectively reducing shortening deformities. Depending on the patient's anatomical dimensions and the degree of shortening deformity, multiple humeral head elevators can be stacked to adjust the elevation height, thereby facilitating the fulfillment of different elevation needs for the humeral head in clinical practice. The lateral edge of the humeral head elevator is flush with the lateral edge of the humeral head support and the lateral edge of the humeral neck support, providing effective support for the lateral bone surface.

[0025] A further feature of the present invention is that the lower end of the humeral head support body is provided with a through hole for threading near its outer edge, the through hole having a diameter of 1-3 mm.

[0026] By adopting the above scheme, the through hole is a round hole, which is mainly used for threading. When a fracture occurs on the lateral side of the humeral head, such as the greater tuberosity or lesser tuberosity, a tension band can be passed through the through hole to fix the fracture fragments of the humeral head by tying. This further fixes the lateral fracture fragments and performs reduction of the lateral fracture of the humeral head. The combination of the fixation device and the tension band facilitates the femoral head support to achieve comprehensive and effective reduction and fixation of the bone fragments on the medial and lateral sides of the humeral head, which is especially effective for comminuted fractures.

[0027] A further feature of the present invention is that: the humeral head support slope of the humeral head support body is an inclined plane, the angle between the inclined plane and the lower end face of the humeral head support body is 30-60°, the lower end of the humeral head support body is a support body base, the support body base is cylindrical, the diameter of the support body base is 18-30mm, the height of the support body base is 4-12mm, and the overall height of the humeral head support body is 20-36mm.

[0028] By adopting the above scheme, the inclined plane of the humeral head support is at a certain angle, which is used to control the neck-shaft angle within a reasonable range of the anatomical structure during fixation. The shape of the humeral head support is reasonably designed so as to better match the structure of the medullary cavity.

[0029] A further feature of the present invention is that: the inner support surface of the humeral neck support is an inclined plane, with an angle of 30-60° between it and the upper end face of the humeral neck support; the outer support surface of the humeral neck support is a vertical plane, perpendicular to the upper end face of the humeral neck support; the humeral neck support is an inverted quadrangular prism, with rounded chamfers at the edges of its upper and lower end faces; the side length of the upper end face of the humeral neck support is 18-30 mm, and the radius of the rounded chamfer on the upper end face of the humeral neck support is 2-6 mm; the side length of the lower end face of the humeral neck support is 9-15 mm, and the radius of the rounded chamfer on the lower end face of the humeral neck support is 1-3 mm; the height of the humeral neck support is 16 mm. The hollow cavity is cylindrical, 24mm in diameter, and is offset from the center of the humeral neck support, but close to the outer edge of the humeral neck support. The radius of the hollow cavity is 3-5mm, and the distance between the center of the hollow cavity and the outer edge of the humeral neck support is 4-8mm. The humeral shaft support is cylindrical, and is coaxial with the hollow cavity. The humeral shaft support is offset from the center of the humeral head support, but close to the outer edge of the humeral head support. The radius of the humeral shaft support is 3-5mm, and the distance between the center of the humeral shaft support and the outer edge of the humeral head support is 4-8mm. The height of the humeral shaft support is 40-120mm.

[0030] By adopting the above scheme, the inner support surface is set at a certain angle, mainly to better fit the anatomical angle of the medial edge of the humeral head and neck, providing strong support and preventing sinking. The outer support surface remains vertical, mainly to fit as closely as possible to the lateral edge of the humeral head and neck, ensuring tight contact with the posterior wall of the humeral shaft. The shape of the humeral neck support is rationally designed, and its edges are rounded to better match the structure of the medullary canal. After the humeral head support and the humeral neck support are connected by the humeral shaft support, the lateral edges of the humeral head support and the humeral neck support are flush, evenly distributing the stress from the lateral edge of the humerus. When the side length of the upper end face of the humeral neck support is the same as the diameter of the support base, it facilitates a better connection between the humeral neck support and the humeral head support. The cylindrical shape of the humeral shaft support matches the circular cavity of the medullary canal, allowing for tight contact with the medullary canal, facilitating osseointegration and forming reliable fixation.

[0031] A further feature of the present invention is that: the inner support surface of the humeral neck support is an inclined plane, with an angle of 30-60° between it and the upper end face of the humeral neck support; the outer support surface of the humeral neck support is a vertical plane, perpendicular to the upper end face of the humeral neck support; the humeral neck support is an inverted quadrangular prism, with rounded chamfers at the edges of its upper and lower end faces; the side length of the upper end face of the humeral neck support is 18-30 mm; and the upper end face of the humeral neck support... The radius of the chamfered arc of the humeral neck support is 2-6 mm. The side length of the lower end face of the humeral neck support is 9-15 mm. The radius of the chamfered arc of the lower end face of the humeral neck support is 1-3 mm. The height of the humeral neck support is 16-24 mm. The insertion cavity is cylindrical and offset from the center of the humeral neck support, located close to the outer edge of the humeral neck support. The radius of the insertion cavity is 3-5 mm. The distance between the center of the insertion cavity and the outer edge of the humeral neck support is 4-8 mm. The height of the insertion cavity is 16-24 mm. The proximal humeral shaft connector is cylindrical and coaxial with the insertion cavity. The proximal humeral shaft connector is offset from the center of the humeral head support and is located near the outer edge of the humeral head support. The radius of the proximal humeral shaft connector is 3-5 mm, and the distance between the center of the proximal humeral shaft connector and the outer edge of the humeral head support is 4-8 mm. The height of the proximal humeral shaft connector is 16-24 mm. The humeral shaft support includes an integrally formed upper support and a lower support. The upper support is an inverted quadrangular prism with a side length of 9-15 mm on the upper end face and 3-13 mm on the lower end face. The height of the upper support is 40-80 mm. The lower support is cylindrical. The upper support, lower support, and insertion cavity are coaxial. The diameter of the lower support is 3-13 mm, and the height of the lower support is 10-30 mm.

[0032] By adopting the above scheme, the inner support surface is set at a certain angle, the main purpose of which is to better fit with the anatomical angle of the medial edge of the humeral head and neck, providing strong support and preventing it from sinking; while the outer support surface remains vertical, the main purpose of which is to fit as closely as possible with the lateral edge of the humeral head and neck, ensuring a tight fit with the posterior wall of the humeral shaft. The shape of the humeral neck support is reasonably designed, and the edges are rounded to better match the structure of the medullary canal. After the humeral head support and the humeral neck support are connected by the proximal humeral shaft connector, the lateral edge of the humeral head support and the lateral edge of the humeral neck support are flush, evenly distributing the stress from the lateral edge of the humerus. When the side length of the upper end face of the humeral neck support is the same as the diameter of the support base, it is easier for the humeral neck support and the humeral head support to connect better. When the side length of the upper end face of the upper support is the same as the side length of the lower end face of the humeral neck support, it extends the humeral neck support into the distal medullary canal of the humerus. As an extension structure of the humeral neck support, the upper support facilitates more reliable fixation in the humeral tunnel. The upper support, lower support, and insertion cavity are arranged on the same central axis, which facilitates the effective bearing of pressure from the humeral neck support. The lower support has the same side length as the lower end face of the upper support, which further extends the humeral neck support into the distal medullary canal of the humerus. The cylindrical shape of the lower support matches the circular cavity of the medullary canal, allowing it to fit closely to the medullary canal, facilitating bone integration and forming reliable fixation.

[0033] A further feature of the present invention is that the fixation component is a biological fixation screw, the connecting hole is a threaded hole, and there are three threaded holes. Each threaded hole is evenly distributed in the middle of the humeral head support slope, and the center of each threaded hole is arranged in an equilateral triangle. The central axis of the threaded hole is perpendicular to the humeral head support slope, and the diameter of the threaded hole is 2-6 mm.

[0034] By adopting the above scheme, the diameter of the biological fixation screw is perfectly matched with the diameter of the threaded hole, and the position of each threaded hole is reasonably designed, which is conducive to the fixation component applying stress evenly to the humeral head.

[0035] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the humeral head support component in Embodiment 1 of the present invention;

[0037] Figure 2 This is a schematic diagram of the humeral neck support in Embodiment 1 of the present invention;

[0038] Figure 3 This is a schematic diagram of the fastener structure in Embodiment 1 of the present invention;

[0039] Figure 4This is a schematic diagram of the humeral head lifting component in Embodiment 1 of the present invention;

[0040] Figure 5 This is a schematic diagram of the cooperative structure of the humeral head support, humeral neck support, fixation member and humeral head lifting member in Embodiment 1 of the present invention;

[0041] Figure 6 This is a schematic diagram illustrating the effective reduction and fixation of the fracture area in Embodiment 1 of the present invention;

[0042] Figure 7 This is the structure of the humeral head support in Embodiment 2 of the present invention;

[0043] Figure 8 This is a schematic diagram of the humeral neck support in Embodiment 2 of the present invention;

[0044] Figure 9 This is a schematic diagram of the fastener structure in Embodiment 2 of the present invention;

[0045] Figure 10 This is a schematic diagram of the humeral head lifting component in Embodiment 2 of the present invention;

[0046] Figure 11 This is a schematic diagram of the cooperative structure of the humeral head support, humeral neck support, fixation member and humeral head lifting member in Embodiment 2 of the present invention;

[0047] Figure 12 This is a schematic diagram illustrating the effective reduction and fixation of the fracture area in Embodiment 2 of the present invention;

[0048] Figure 13 This is a schematic diagram of the proximal humerus fracture area in the patient. Detailed Implementation

[0049] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component 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 this invention. Example

[0050] like Figures 1-6 As shown, an internal support repair system for proximal humeral fractures includes:

[0051] The humeral head support 1 has an upper end near the shoulder. The upper end of the humeral head support 1 has a humeral head support slope 11 for supporting the humeral head from the inside near its inner edge. The humeral head support 1 has a through connection hole 12 that passes through the humeral head support slope 11.

[0052] The humeral neck support 2 has an inner support surface 21 on its inner side for supporting the inner edge of the humeral head and neck from the inside, and an outer support surface 22 on its outer side for supporting the outer edge of the humeral head and neck from the outside. The humeral head support 1 is directly or indirectly abutted against the humeral neck support 2. The humeral head support 1 and the humeral neck support 2 are positioned and connected. The outer edge of the humeral head support 1 is flush with the outer edge of the humeral neck support 2.

[0053] The upper end of the humeral shaft support 3 is fixed or integrally connected to the lower end face of the humeral head support 1. The lower end of the humeral shaft support 3 extends into the medullary canal of the distal humerus. The humeral neck support 2 is provided with a hollow cavity 23 that penetrates its upper and lower end faces. The shape of the humeral shaft support 3 is adapted to the hollow cavity 23, and the humeral shaft support 3 passes through the hollow cavity 23.

[0054] Fixation member 4 includes a head 41 and a rod 42. The rod 42 of the fixation member 4 is provided with external threads. The rod 42 of the fixation member 4 passes through the fracture fragment and the connecting hole 12 in sequence. The threaded end of the rod 42 is fixedly connected to the humeral head. The head 41 of the fixation member 4 rests on the lateral cortex or subcortex of the fracture fragment.

[0055] In this embodiment, a humeral head elevator 5 is also included. The humeral head elevator 5 is provided with a U-shaped groove 51. The humeral head elevator 5 is placed between the humeral head support 1 and the humeral neck support 2, and is secured to the humeral shaft support 3 through the U-shaped groove 51. The humeral head elevator 5 can be used according to clinical needs, or it can be omitted.

[0056] In this embodiment, the lower end of the humeral head support 1 is provided with a through hole 13 near its lateral edge, which can be used for threading. The diameter of the through hole 13 is 1-3 mm. When a fracture occurs on the lateral side of the humeral head, such as the greater tuberosity or lesser tuberosity, a tension band 6 can be passed through the through hole 13 to fix the fracture fragments of the humeral head by binding, further fixing the lateral fracture fragments and reducing the lateral fracture of the humeral head. The combination of the fixation member 4 and the tension band 6 facilitates the femoral head support to achieve effective reduction and fixation of the bone fragments on the medial and lateral sides of the humeral head in all directions, which is especially effective for comminuted fractures.

[0057] In this embodiment, the humeral head support slope 11 of the humeral head support 1 is an inclined plane, and the angle between it and the lower end face of the humeral head support 1 is 30-60°. The lower end of the humeral head support 1 is a support base 14, which is cylindrical in shape. The diameter of the support base 14 is 18-30mm, the height of the support base 14 is 4-12mm, and the overall height of the humeral head support 1 is 20-36mm.

[0058] In this embodiment, the inner support surface 21 of the humeral neck support 2 is an inclined plane, with an angle of 30-60° between it and the upper end face of the humeral neck support 2. The outer support surface 22 of the humeral neck support 2 is a vertical plane, perpendicular to the upper end face of the humeral neck support 2. The humeral neck support 2 is an inverted quadrangular prism, with rounded chamfers at the edges of its upper and lower end faces. The side length of the upper end face of the humeral neck support 2 is 18-30 mm, and the radius of the rounded chamfer on the upper end face of the humeral neck support 2 is 2-6 mm. The side length of the lower end face of the humeral neck support 2 is 9-15 mm, and the radius of the rounded chamfer on the lower end face of the humeral neck support 2 is 1-3 mm. The height of the humeral neck support 2 is 16-24 mm, and it is hollow. The hollow cavity 23 is cylindrical, offset from the center of the humeral neck support 2, and positioned close to the outer edge of the humeral neck support 2. The radius of the hollow cavity 23 is 3-5 mm, and the distance between the center of the hollow cavity 23 and the outer edge of the humeral neck support 2 is 4-8 mm. The humeral shaft support 3 is cylindrical, coaxial with the hollow cavity 23, offset from the center of the humeral head support 1, and positioned close to the outer edge of the humeral head support 1. The radius of the humeral shaft support 3 is 3-5 mm, and the distance between the center of the humeral shaft support 3 and the outer edge of the humeral head support 1 is 4-8 mm. The height of the humeral shaft support 3 is 40-120 mm. Of course, the hollow cavity can also be of other shapes, and the corresponding humeral shaft support is designed to fit accordingly.

[0059] In this embodiment, the fixing member 4 is a biological fixation screw, the connecting hole 12 is a threaded hole, and there are three threaded holes. Each threaded hole is evenly distributed in the middle of the humeral head support slope 11. The center of each threaded hole is arranged in an equilateral triangle. The central axis of the threaded hole is perpendicular to the humeral head support slope 11. The diameter of the threaded hole is 2-6mm.

[0060] In this embodiment, the humeral head lifting member 5 is a circular flat pad with a diameter of 18-30 mm and a thickness of 1-3 mm. The radius of the outer semicircular arc surface 511 of the U-shaped groove 51 is 3-5 mm. The radius of the outer semicircular arc surface 511 of the U-shaped groove 51 matches the radius of the humeral shaft support 3. The distance between the center of the semicircular arc surface 511 and the outer edge of the humeral head lifting member 5 is 4-8 mm. Example

[0061] like Figures 7-12 As shown, an internal support repair system for proximal humeral fractures includes:

[0062] The humeral head support 1' has an upper end near the shoulder. The upper end of the humeral head support 1' is provided with a humeral head support slope 11' for supporting the humeral head from the inside near its inner edge. The humeral head support 1' has a through connection hole 12' that passes through the humeral head support slope 11'.

[0063] The humeral neck support 2' has an inner support surface 21' on its inner side for supporting the inner edge of the humeral head and neck from the inside, and an outer support surface 22' on its outer side for supporting the outer edge of the humeral head and neck from the outside. The humeral head support 2' is directly or indirectly abutted against the humeral neck support 2'. The lower end of the humeral head support 1' is fixed or integrally provided with a proximal humeral shaft connector 15'. The humeral neck support 2' has a cavity 23' that matches the shape of the proximal humeral shaft connector. The proximal humeral shaft connector 15' is inserted into the cavity 23' to achieve positioning connection between the humeral head support 1' and the humeral neck support 2'. The outer edge of the humeral head support 1' is flush with the outer edge of the humeral neck support 2'.

[0064] The upper end of the humeral shaft support 3' is fixed or integrally connected to the lower end face of the humeral neck support 2', and the lower end of the humeral shaft support 3' extends into the medullary canal of the distal humerus.

[0065] Fixation member 4' includes a head 41' and a rod 42'. The rod 42' of the fixation member 4' is provided with external threads. The rod 42' of the fixation member 4' passes through the fracture fragment and the connecting hole 12' in sequence. The threaded end of the rod 42' is fixedly connected to the humeral head. The head 41' of the fixation member 4' rests on or under the lateral cortex of the fracture fragment.

[0066] Of course, the positioning and connection between the humeral head support and the humeral neck support can also be as follows: the upper end of the humeral neck support is fixed or integrally provided with a proximal humeral shaft connector, and the humeral head support has a cavity adapted to the shape of the proximal humeral shaft connector, into which the proximal humeral shaft connector is inserted. The position of the above-mentioned cavity is acceptable as long as it does not affect the setting of the connection hole and the threading hole.

[0067] In this embodiment, a humeral head elevator 5' is also included. The humeral head elevator 5' is provided with a U-shaped groove 51'. The humeral head elevator 51' is placed between the humeral head support 1' and the humeral neck support 2'. The humeral head elevator 5' is secured to the proximal humeral shaft connector 14' through the U-shaped groove 51'. The humeral head elevator 5' can be used according to clinical needs, or it can be omitted.

[0068] In this embodiment, the lower end of the humeral head support 1' is provided with a through hole 13' near its lateral edge, which can be used for threading. The diameter of the through hole 13' is 1-3 mm. When a fracture occurs on the lateral side of the humeral head, such as the greater tuberosity or lesser tuberosity, a tension band 6' can be passed through the through hole to fix the fracture fragments of the humeral head by binding, further fixing the lateral fracture fragments and reducing the lateral fracture of the humeral head. The combination of the fixation element 4' and the tension band 6' facilitates the femoral head support to achieve effective reduction and fixation of the bone fragments on the medial and lateral sides of the humeral head in all directions, which is especially effective for comminuted fractures.

[0069] In this embodiment, the humeral head support inclined surface 11' of the humeral head support 1' is an inclined plane, and the angle between it and the lower end surface of the humeral head support 1' is 30-60°. The lower end of the humeral head support 1' is a support base 14', which is cylindrical in shape. The diameter of the support base 14' is 18-30mm, the height of the support base 14' is 4-12mm, and the overall height of the humeral head support 1' is 20-36mm.

[0070] In this embodiment, the inner support surface 21' of the humeral neck support 2' is an inclined plane, with an angle of 30-60° between it and the upper end face of the humeral neck support 2'. The outer support surface 22' of the humeral neck support 2' is a vertical plane, perpendicular to the upper end face of the humeral neck support 2'. The humeral neck support 2' is an inverted quadrangular prism, with rounded chamfers at the edges of its upper and lower end faces. The side length of the upper end face of the humeral neck support 2' is 18-30 mm, and the radius of the rounded chamfer on the upper end face of the humeral neck support 2' is 2-6 mm. The lower end face of the humeral neck support 2' has a side length of 9-15 mm, the radius of the chamfer on the lower end face of the humeral neck support 2' is 1-3 mm, the height of the humeral neck support 2' is 16-24 mm, the cavity 23' is cylindrical, the cavity 23' is offset from the center of the humeral neck support 2' and is located close to the outer edge of the humeral neck support 2', the radius of the cavity 23' is 3-5 mm, the distance between the center of the cavity 23' and the outer edge of the humeral neck support 2' is 4-8 mm, and the height of the cavity 23' is 16-24 mm. m, the proximal humeral shaft connector 15' is cylindrical and coaxial with the cavity 23'. The proximal humeral shaft connector 15' is offset from the center of the humeral head support 1' and is located near the lateral edge of the humeral head support 1'. The radius of the proximal humeral shaft connector 15' is 3-5 mm, the distance between the center of the proximal humeral shaft connector 15' and the lateral edge of the humeral head support 1' is 4-8 mm, and the height of the proximal humeral shaft connector 15' is 16-24 mm. The humeral shaft support 3' includes The upper support portion 31' and the lower support portion 32' are integrally formed. The upper support portion 31' is an inverted quadrangular prism. The side length of the upper end face of the upper support portion 31' is 9-15mm, the side length of the lower end face of the upper support portion 31' is 3-13mm, and the height of the upper support portion 31' is 40-80mm. The lower support portion 32' is cylindrical. The upper support portion 31', the lower support portion 32' and the insertion cavity 23' are arranged on the same central axis. The diameter of the lower support portion 32' is 3-13mm, and the height of the lower support portion 32' is 10-30mm.

[0071] In this embodiment, the fixing member 4' is a biological fixation screw, the connecting hole 12' is a threaded hole, and there are three threaded holes. Each threaded hole is evenly distributed in the middle of the humeral head support slope 11'. The centers of each threaded hole are arranged in an equilateral triangle. The central axis of the threaded hole is perpendicular to the humeral head support slope 12', and the diameter of the threaded hole is 2-6mm.

[0072] In this embodiment, the humeral head lifting member 5' is a circular flat pad with a diameter of 18-30 mm and a thickness of 1-3 mm. The radius of the outer semicircular arc surface 511' of the U-shaped groove 51' is 3-5 mm. The radius of the outer semicircular arc surface 511' of the U-shaped groove 51' matches the radius of the proximal humeral shaft connector 15'. The distance between the center of the semicircular arc surface 511' and the outer edge of the humeral head lifting member 5' is 4-8 mm.

[0073] Among them, the appendix Figure 6 , 12 In section 13, area A is the region of the proximal humerus fracture in the patient. Figure 6 The fracture area was effectively reduced and fixed using the method described in Example 1. Figure 12 Example 2 was used to effectively reduce and fix the fracture area.

[0074] The aforementioned support components, provided that the mechanical structural strength is ensured, can be made using commonly used orthopedic internal fixation biomaterials in clinical practice, such as metal, PEEK material, or absorbable material. Any structure that is the same as this invention but uses different biomaterials to make it is within the scope of protection of this invention.

[0075] The preferred dimensions of the aforementioned support components are mainly based on the selection of people of East Asian descent. For patients of different races or those with more specific physical characteristics within the same race, the dimensions may be further adjusted accordingly. Any structure that is the same as the present invention but only changes the dimensions of the support components is within the scope of protection of the present invention.

[0076] The above embodiments are merely preferred embodiments of the present invention. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included within the protection scope of the present invention.

Claims

1. An internal support repair system for proximal humeral fractures, characterized in that: include: A humeral head support member, wherein the humeral head support member has an upper end near the shoulder, and the upper end of the humeral head support member is provided with a humeral head support slope near its inner edge for supporting the humeral head from the inside, and a through connecting hole is provided on the humeral head support member, the connecting hole passing through the humeral head support slope. The humeral neck support has an inner support surface on its inner side for supporting the inner edge of the humeral head and neck from the inner side, and an outer support surface on its outer side for supporting the outer edge of the humeral head and neck from the outer side. The humeral head support is indirectly abutted against the humeral neck support. The humeral head support and the humeral neck support are positioned and connected. The outer edge of the humeral head support is flush with the outer edge of the humeral neck support. The humeral shaft support extends from its lower end into the medullary canal of the distal humerus. The fixation device includes a head and a rod. The rod of the fixation device has external threads. The rod of the fixation device passes through the fracture fragment and the connecting hole in sequence. The threaded end of the rod is fixedly connected to the humeral head. The head of the fixation device rests on or under the lateral cortex of the fracture fragment. The upper end of the humeral shaft support is fixedly connected to the lower end face of the humeral head support. The humeral neck support is provided with a hollow cavity that penetrates its upper and lower end faces. The shape of the humeral shaft support is adapted to the hollow cavity. The humeral shaft support passes through the hollow cavity and also includes a humeral head lifting member. The humeral head lifting member is provided with a U-shaped groove. The humeral head lifting member is placed between the humeral head support and the humeral neck support. The humeral head lifting member is fitted onto the humeral shaft support through the U-shaped groove.

2. The internal support repair system for proximal humeral fractures according to claim 1, characterized in that: The lower end of the humeral head support has a through hole with a diameter of 1-3 mm, which can be used for threading, located near its outer edge.

3. The internal support repair system for proximal humeral fractures according to claim 1, characterized in that: The humeral head support has an inclined plane with an angle of 30-60° between the inclined plane and the lower end face of the humeral head support. The lower end of the humeral head support is a support base, which is cylindrical with a diameter of 18-30mm and a height of 4-12mm. The overall height of the humeral head support is 20-36mm.

4. The internal support repair system for proximal humeral fractures according to claim 1, characterized in that: The inner support surface of the humeral neck support is an inclined plane, with an angle of 30-60° between it and the upper end face of the humeral neck support. The outer support surface of the humeral neck support is a vertical plane, perpendicular to the upper end face of the humeral neck support. The humeral neck support is an inverted quadrangular prism, with rounded chamfers at the edges of its upper and lower end faces. The side length of the upper end face of the humeral neck support is 18-30 mm, and the radius of the rounded chamfer on the upper end face is 2-6 mm. The side length of the lower end face of the humeral neck support is 9-15 mm, and the radius of the rounded chamfer on the lower end face is 1-3 mm. The height of the humeral neck support is 16-24 mm. The hollow cavity is cylindrical, offset from the center of the humeral neck support and located near the outer edge of the humeral neck support. The radius of the hollow cavity is 3-5 mm, and the distance between the center of the hollow cavity and the outer edge of the humeral neck support is 4-8 mm. The humeral shaft support is cylindrical, coaxial with the hollow cavity, offset from the center of the humeral head support and located near the outer edge of the humeral head support. The radius of the humeral shaft support is 3-5 mm, and the distance between the center of the humeral shaft support and the outer edge of the humeral head support is 4-8 mm. The height of the humeral shaft support is 40-120 mm.

5. The internal support repair system for proximal humeral fractures according to claim 1, 2, or 3, characterized in that: The fixation component is a biological fixation screw, and the connection hole is a threaded hole. There are three threaded holes, each evenly distributed in the middle of the humeral head support slope. The centers of the threaded holes are arranged in an equilateral triangle. The central axis of the threaded hole is perpendicular to the humeral head support slope, and the diameter of the threaded hole is 2-6mm.

6. An internal support repair system for proximal humeral fractures, characterized in that: include: A humeral head support member, wherein the humeral head support member has an upper end near the shoulder, and the upper end of the humeral head support member is provided with a humeral head support slope near its inner edge for supporting the humeral head from the inside, and a through connecting hole is provided on the humeral head support member, the connecting hole passing through the humeral head support slope. The humeral neck support has an inner support surface on its inner side for supporting the inner edge of the humeral head and neck from the inner side, and an outer support surface on its outer side for supporting the outer edge of the humeral head and neck from the outer side. The humeral head support is indirectly abutted against the humeral neck support. The humeral head support and the humeral neck support are positioned and connected. The outer edge of the humeral head support is flush with the outer edge of the humeral neck support. The humeral shaft support extends from its lower end into the medullary canal of the distal humerus. The fixation device includes a head and a rod. The rod of the fixation device has external threads. The rod of the fixation device passes through the fracture fragment and the connecting hole in sequence. The threaded end of the rod is fixedly connected to the humeral head. The head of the fixation device rests on or under the lateral cortex of the fracture fragment. The upper end of the humeral shaft support is fixedly connected to the lower end face of the humeral neck support. The lower end of the humeral head support is fixedly provided with a proximal humeral shaft connector. The humeral neck support has a cavity adapted to the shape of the proximal humeral shaft connector. The proximal humeral shaft connector is inserted into the cavity. The humeral head support also includes a humeral head lifting member. The humeral head lifting member is provided with a U-shaped groove. The humeral head lifting member is placed between the humeral head support and the humeral neck support. The humeral head lifting member is secured to the proximal humeral shaft connector through the U-shaped groove.

7. The internal support repair system for proximal humeral fractures according to claim 6, characterized in that: The lower end of the humeral head support has a through hole with a diameter of 1-3 mm, which can be used for threading, located near its outer edge.

8. The internal support repair system for proximal humeral fractures according to claim 6, characterized in that: The humeral head support has an inclined plane with an angle of 30-60° between the inclined plane and the lower end face of the humeral head support. The lower end of the humeral head support is a support base, which is cylindrical with a diameter of 18-30mm and a height of 4-12mm. The overall height of the humeral head support is 20-36mm.

9. The internal support repair system for proximal humeral fractures according to claim 6, characterized in that: The inner support surface of the humeral neck support is an inclined plane, with an angle of 30-60° between it and the upper end face of the humeral neck support. The outer support surface of the humeral neck support is a vertical plane, perpendicular to the upper end face of the humeral neck support. The humeral neck support is an inverted quadrangular prism, with rounded chamfers at the edges of its upper and lower end faces. The side length of the upper end face of the humeral neck support is 18-30 mm, and the radius of the rounded chamfer on the upper end face is [missing information]. The length of the lower end face of the humeral neck support is 9-15 mm, the radius of the chamfer on the lower end face is 1-3 mm, the height of the humeral neck support is 16-24 mm, the cavity is cylindrical, offset from the center of the humeral neck support and located close to the outer edge of the humeral neck support, the radius of the cavity is 3-5 mm, the distance between the center of the cavity and the outer edge of the humeral neck support is 4-8 mm, and the height of the cavity is... The humeral shaft proximal connector is cylindrical and coaxial with the cavity. It is offset from the center of the humeral head support and positioned near its outer edge. The radius of the connector is 3-5 mm, and the distance between its center and the outer edge of the support is 4-8 mm. The height is 16-24 mm. The humeral shaft support includes an integrally formed upper and lower support. The upper support is an inverted quadrangular prism with a side length of 9-15 mm on its upper end face and 3-13 mm on its lower end face. Its height is 40-80 mm. The lower support is cylindrical and coaxial with the cavity. The lower support has a diameter of 3-13 mm and a height of 10-30 mm.

10. A proximal humeral fracture internal support repair system according to claim 6, 7, or 8, characterized in that: The fixation component is a biological fixation screw, and the connection hole is a threaded hole. There are three threaded holes, each evenly distributed in the middle of the humeral head support slope. The centers of the threaded holes are arranged in an equilateral triangle. The central axis of the threaded hole is perpendicular to the humeral head support slope, and the diameter of the threaded hole is 2-6mm.

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