A special-shaped proximal humeral block

Abstract

An embodiment of the present invention relates to a proximal humeral special-shaped block, which specifically includes: a first fixing part and a second fixing part: the inner surface of the first fixing part is an arcuate surface; the first fixing part includes: two top locking screw holes, located at the upper part of the first fixing part; a first oblique locking screw hole, located below the top locking screw hole; a second oblique locking screw hole, located below the first oblique locking screw hole; two middle locking screw holes, located below the second oblique locking screw hole; a third oblique locking screw hole, located below the middle locking screw hole; two lower locking screw holes, located below the third oblique locking screw hole; the second fixing part includes: a fixing screw hole, located on the surface of the second fixing part; a connecting rod connecting circular hole, located on the side of the second fixing part.

Description

Technical Field

[0001] The invention relates to the field of orthopedic medical instruments, and in particular to a humeral proximal shaped block. Background Art

[0002] With the acceleration of population aging, the incidence of fractures is also increasing. Among them, humeral fractures are very common injuries. When treating humeral fractures, the broken bones need to be reset using fixing devices such as connecting rods to firmly connect and fix the broken bones together.

[0003] During use, in order to ensure that the connecting rod fixes the humerus, fixing devices are installed on both ends of the connecting rod to avoid bone displacement, facilitate patients to exercise appropriately, and restore the function of the bones to the maximum extent. In order to stabilize the humerus, the existing fixing devices generally have densely installed screws on the surface of the fixing devices, which have the following defects: 1. Too many screws are implanted, and the drilling causes great damage to the humeral structure, which can easily cause deformation of the humeral head; 2. The implanted screws exist in the humerus for a long time, which will affect blood circulation and cause lesions in the humeral head; 3. In addition to the preset nail holes on the surface of the fixing device, when it is close to the humerus, it will cause discomfort to the patient. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a proximal humeral special-shaped block with a plate-like design, easy installation, firm connection, improved fit, reduced secondary damage to the bone, improved patient comfort and guaranteed safety of use.

[0005] To achieve the above object, the present invention provides a proximal humeral shaped block, the proximal humeral shaped block specifically comprising: a first fixing portion and a second fixing portion, wherein the first fixing portion and the second fixing portion are connected:

[0006] The inner surface of the first fixing part is an arc-shaped surface, which is used to match the curved surface of the upper end of the humerus; the first fixing part includes:

[0007] Two top locking screw holes are located on the upper part of the first fixing part. When the first locking screw passes through the top locking screw hole, the first upper screw connection part of the first locking screw is screwed with the top locking screw hole. The vertical inclination angle of the normal of the plane where the first locking screw and the second fixing part are located is a first vertical inclination angle.

[0008] a first oblique locking screw hole, located below the top locking screw hole, wherein when the second locking screw passes through the first oblique locking screw hole, the second upper screw connection portion of the second locking screw is screwed with the first oblique locking screw hole, and the vertical inclination angle of the normal of the plane where the second locking screw and the second fixing portion are located is a second vertical inclination angle;

[0009] a second oblique locking screw hole, located below the first oblique locking screw hole; when the third locking screw passes through the second oblique locking screw hole, the third upper screw connection portion of the third locking screw is screwed with the second oblique locking screw hole; a vertical inclination angle of the third locking screw and the normal of the plane where the second fixing portion is located is a third vertical inclination angle; the third vertical inclination angle intersects with the second vertical inclination angle;

[0010] Two middle locking screw holes are located below the second oblique locking screw hole, and when the fourth locking screw passes through the middle locking screw hole, the fourth upper screw connection portion of the fourth locking screw is screwed with the middle locking screw hole, and the vertical inclination angle of the fourth locking screw and the normal of the plane where the second fixing portion is located is a fourth vertical inclination angle;

[0011] a third oblique locking screw hole, located below the middle locking screw hole, wherein when the fifth locking screw passes through the third oblique locking screw hole, the fifth upper screw-connecting portion of the fifth locking screw is screwed with the third oblique locking screw hole, and the vertical inclination angle between the fifth locking screw and the normal of the plane where the second fixing portion is located is a fifth vertical inclination angle;

[0012] Two lower locking screw holes are located below the third oblique locking screw hole. When the sixth locking screw passes through the lower locking screw hole, the sixth upper screw connection portion of the sixth locking screw is screwed with the lower locking screw hole. The vertical inclination angle of the sixth locking screw and the normal of the plane where the second fixing portion is located is a sixth vertical inclination angle; the sixth vertical inclination angle intersects with the fifth vertical inclination angle.

[0013] The second fixing portion includes:

[0014] A fixing screw hole, located on the surface of the second fixing portion;

[0015] The connecting rod connecting circular hole is located on the side of the second fixing part; the connecting rod is inserted into the connecting rod connecting circular hole, and when the seventh locking screw passes through the fixing screw hole, the seventh upper threaded portion of the seventh locking screw is threadedly connected with the fixing screw hole, thereby squeezing the connecting rod connecting circular hole to fix the connecting rod and the second fixing part.

[0016] Preferably, the first vertical inclination angle ranges from 12 to 18°, the third vertical inclination angle ranges from 25 to 31°, the fourth vertical inclination angle ranges from 13 to 18°, and the sixth vertical inclination angle ranges from 7 to 13°.

[0017] Preferably, a horizontal inclination angle between the second locking screw inserted into the first oblique locking screw hole and the normal to the plane where the second fixing portion is located is a first horizontal inclination angle;

[0018] The horizontal inclination angle between the third locking screw inserted into the second oblique locking screw hole and the normal of the plane where the second fixing portion is located is a second horizontal inclination angle;

[0019] The horizontal inclination angle between the fourth locking screw inserted into the middle locking screw hole and the normal of the plane where the second fixing portion is located is a third horizontal inclination angle;

[0020] The horizontal inclination angle between the sixth locking screw inserted into the lower locking screw hole and the normal of the plane where the second fixing portion is located is a fourth horizontal inclination angle; and the fourth horizontal inclination angle is equal to the third horizontal inclination angle.

[0021] Further preferably, the second horizontal inclination angle ranges from 9 to 15°, the third horizontal inclination angle ranges from 4 to 11°, and the fourth horizontal inclination angle and the sixth horizontal inclination angle range from 7 to 13°.

[0022] Preferably, the curvature radius of the bottom edge of the horizontal section of the first fixing portion between the top locking screw hole and the first oblique locking screw hole is R1, and the value range of R1 is 33 to 38 mm;

[0023] The curvature radius of the bottom edge of the horizontal section of the first fixing portion between the second oblique locking screw hole and the middle locking screw hole is R2, and the value range of R2 is 21 to 25 mm;

[0024] The curvature radius of the bottom edge of the horizontal section of the first fixing portion between the third oblique locking screw hole and the lower locking screw hole is R3, and the value range of R3 is 15 to 20 mm.

[0025] Preferably, the first fixing portion further has one or more positioning holes for use in temporarily fixing the proximal humeral shaped block during surgery.

[0026] Preferably, the first fixing portion and the second fixing portion are an integrally formed structure.

[0027] Preferably, the connecting rod connecting circular hole specifically includes: a first connecting rod connecting circular hole and a second connecting rod connecting circular hole;

[0028] The diameter of the first connecting rod connecting circular hole and the diameter of the second connecting rod connecting circular hole are equal or different.

[0029] A proximal humeral special-shaped block provided in an embodiment of the present invention is designed as an integrally formed structure, which is easy to install, achieves connection stability, improves fit, reduces secondary damage to bones, improves patient comfort, and ensures safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1A top view of the proximal humeral shaped block provided in an embodiment of the present invention;

[0031] Figure 2 A bottom view of the proximal humeral shaped block provided in an embodiment of the present invention;

[0032] Figure 3 A side view of the proximal humeral shaped block provided by an embodiment of the present invention (I);

[0033] Figure 4 A side view of the proximal humeral shaped block provided by an embodiment of the present invention (II);

[0034] Figure 5 for Figure 2 Cross-section of the AA section of the mid-tail;

[0035] Figure 6 for Figure 1 Sectional view of the BB part of the middle head;

[0036] Figure 7 for Figure 1 Cross-section of the CC portion of the mid-head;

[0037] Figure 8 for Figure 1 Sectional view of the DD part of the middle head;

[0038] Fig. 9 Schematic diagram of the proximal humeral shaped block used in conjunction with locking screws and connecting rods. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0040] An embodiment of the present invention provides a proximal humeral special-shaped block, which is used for fixing the fracture site in humeral fracture surgery.

[0041] Figure 1 A top view of the proximal humeral shaped block provided in an embodiment of the present invention, Figure 2 A bottom view of the proximal humeral shaped block provided in an embodiment of the present invention, Figure 3 A side view of a proximal humeral shaped block provided by an embodiment of the present invention (a); Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a proximal humeral special-shaped block, which is plate-shaped and specifically includes: a first fixing portion 41 and a second fixing portion 42 .

[0042] The first fixing portion 41 and the second fixing portion 42 are connected and are an integrally formed structure.

[0043] Preferably, in the present embodiment, the plane where the second fixing portion 42 is located is set as the first plane, the plane parallel to the horizontal direction of the normal to the first plane is set as the second plane, and the plane parallel to the vertical direction of the normal to the first plane is set as the third plane; in the present embodiment, the vertical inclination angle between the locking screw and the normal to the plane where the second fixing portion 42 is located is a vertical inclination angle, which is the angle between the locking screw and the third plane; similarly, the horizontal inclination angle between the locking screw and the normal to the plane where the second fixing portion 42 is located is a horizontal inclination angle, which is the angle between the locking screw and the second plane.

[0044] The outer surface of the first fixing part 41 is an arcuate surface with a certain curvature, and 9 locking screw holes and 5 circular holes are arranged in sequence along the long side direction of the first fixing part 41 on the arcuate surface, which are two top locking screw holes 410, a first oblique locking screw hole 411, a second oblique locking screw hole 412, two middle locking screw holes 413, a third oblique locking screw hole 414, two lower locking screw holes 415 and a positioning hole 416; wherein the positioning hole 416 includes a first positioning hole 4160, a second positioning hole 4161, a third positioning hole 4162, a fourth positioning hole 4163 and a fifth positioning hole 4164; the inner surface of the first fixing part 41 is an arcuate surface, which is adapted to the curved surface of the inner upper end of the humerus, and the first fixing part 41 is fixed to the bone surface of the outer side of the humerus by inserting a locking screw through the locking screw hole.

[0045] Two top locking screw holes 410 are located at the upper part of the first fixing part 41, and are symmetrically arranged on both sides of the long axis of the proximal humeral shaped block. The function of the top locking screw holes 410 is to fix the first fixing part 41 to its surface from both sides of the upper end surface of the humerus through locking screws, so as to achieve the fitting of the inner surface of the first fixing part 41 with the bone surface of the upper end of the humerus. The interior of the top locking screw hole 410 is specifically composed of an upper edge part and a lower edge part. The surface of the upper edge part is a smooth curved surface, and the surface of the lower edge part is provided with a fastening thread.

[0046] In a specific embodiment, after the first locking screw passes through the top locking screw hole 410, the first upper threaded portion of the first locking screw is screwed into the lower edge of the top locking screw hole 410. As the first upper threaded portion is screwed and tightened with the fastening thread, the screw cap portion of the first locking screw stays in the upper edge of the top locking screw hole 410. The screw shaft portion and the screw head portion of the first locking screw respectively pass through the top locking screw hole 410 and are implanted into the bone. During the implantation process, the inclination angle formed by the first locking screw and the third plane is the first vertical inclination angle α, and the first vertical inclination angle α ranges from 12 to 18°; the inclination angle formed by the first locking screw and the second plane is the first horizontal inclination angle α′, and the first horizontal inclination angle α′ is 0°. Since the two top locking screw holes 410 have the same penetration direction and are separated by a certain distance, the phenomenon that the screws cut each other when the holes are set on the same straight line or plane can be avoided, thereby reducing the problem of difficulty in screw placement during surgery.

[0047] The first oblique locking screw hole 411 is located on the right side of the long axis of the proximal humeral shaped block and is arranged below the top locking screw hole 410 and is arranged opposite to the second positioning hole 4161. The function of the first oblique locking screw hole 411 is to fix the first fixing part 41 on the surface of the upper end of the humeral head from one side of the upper end surface of the humeral head through the oblique locking screw, so as to achieve the fit between the outer edge of the inner surface of the first fixing part 41 and the bone surface of the upper end of the humeral head. Similarly, the first oblique locking screw hole 411 also has an upper edge and a lower edge.

[0048] In a specific embodiment, after the second locking screw passes through the first oblique locking screw hole 411, the second upper threaded portion of the second locking screw is screwed into the lower edge of the first oblique locking screw hole 411. As the second upper threaded portion is screwed and tightened with the fastening thread, the screw cap portion of the second locking screw stays in the upper edge of the first oblique locking screw hole 411, and the screw shaft portion and the nail head portion of the second locking screw respectively pass through the first oblique locking screw hole 411 and are implanted into the bone. During the implantation process, the inclination angle formed by the second locking screw and the third plane is the second vertical inclination angle β, and the second vertical inclination angle β is 0°; the inclination angle formed by the second locking screw and the second plane is the second horizontal inclination angle β′, and the second horizontal inclination angle β′ ranges from 9 to 15°; since the penetration direction of the first oblique locking screw hole 411 is different from the penetration direction of the top locking screw hole 410, such a setting can realize that the locking screw can be inserted into different areas of the humeral head, thereby achieving the effect of increasing the holding force of the locking screw.

[0049] The second oblique locking screw hole 412 is located on the left side of the long axis of the proximal humeral shaped block and is arranged below the first oblique locking screw hole 411. The second oblique locking screw hole 412 is used to fix the first fixing part 41 on the surface of the upper end of the humeral head through the oblique locking screw from the other side of the upper end surface of the humeral head, so as to achieve the fit between the outer edge of the inner surface of the first fixing part 41 and the bone surface of the upper end of the humeral head. Similarly, the second oblique locking screw hole 412 also has an upper edge and a lower edge.

[0050] In a specific embodiment, after the third locking screw passes through the second oblique locking screw hole 412, the third upper threaded portion of the third locking screw is screwed into the lower edge of the second oblique locking screw hole 412. As the third upper threaded portion is screwed and tightened with the fastening thread, the screw cap portion of the third locking screw stays in the upper edge of the second oblique locking screw hole 412. The screw shaft portion and the nail head portion of the third locking screw are respectively passed through the second oblique locking screw hole 412 and implanted into the bone. During the implantation process, the inclination angle formed by the third locking screw and the third plane is the third vertical inclination angle γ. The vertical inclination angle γ ranges from 25 to 31°; the inclination angle formed by the third locking screw and the second plane is the third horizontal inclination angle γ′, and the third horizontal inclination angle γ′ ranges from 4 to 11°; wherein the third vertical inclination angle γ intersects with the second vertical inclination angle β. Since the penetration directions of the first oblique locking screw hole 411, the top locking screw hole 410 and the second oblique locking screw hole 412 are different, the locking screws can be inserted into different areas of the humeral head and a spatial three-dimensional cross structure can be constructed, thereby increasing the holding force of the locking screw while making the special-shaped block more firmly fixed to the surface of the humerus.

[0051] The two middle locking screw holes 413 are located in the middle of the first fixing part 41 and are symmetrically arranged on both sides of the long axis of the proximal humeral shaped block, and are arranged below the second oblique locking screw hole 412. The two middle locking screw holes 413 are used to fix the first fixing part 41 to its surface through locking screws from the middle surface of the humeral head, so that the screws passing through the screw holes are evenly distributed in the entire area of ​​the humeral head, avoiding too many locking screws being inserted into the front end of the humeral head; similarly, the two middle locking screw holes 413 also have upper edge parts and lower edge parts inside;

[0052] In a specific embodiment, after the fourth locking screw passes through the middle locking screw hole 413, the fourth upper threaded portion of the fourth locking screw is screwed with the lower edge of the locking screw hole 413. As the fourth upper threaded portion is screwed and tightened with the fastening thread, the screw cap portion of the fourth locking screw stays in the upper edge of the middle locking screw hole 413. The screw shaft and the nail head of the fourth locking screw are respectively passed through the middle locking screw hole 413 and implanted into the bone. During the implantation process, the inclination angle formed by the fourth locking screw and the third plane is a fourth vertical inclination angle δ, and the fourth vertical inclination angle δ ranges from 13 to 18 degrees. ; The inclination angle formed by the fourth locking screw and the second plane is the fourth horizontal inclination angle δ′, and the range of the fourth horizontal inclination angle δ′ is 7 to 13°; the two middle locking screw holes 413 have the same penetration direction and are separated by a certain distance, and the penetration directions of the middle locking screw hole 413 and the first oblique locking screw hole 411, the top locking screw hole 410 and the second oblique locking screw hole 412 are all different, so that the locking screws can be inserted into different areas of the humeral head, constructing a spatial three-dimensional cross structure, thereby increasing the holding force of the locking screws while making the special-shaped block more firmly fixed to the surface of the humerus.

[0053] The third oblique locking screw hole 414 is located below the middle locking screw hole 413 and is arranged on the long axis of the proximal humeral shaped block. The middle locking screw hole 413 is used to fix the first fixing part 41 on the surface of the middle end of the humeral head through a locking screw to achieve accurate positioning of the first fixing part 41 on the humeral head; similarly, the third oblique locking screw hole 414 also has an upper edge and a lower edge.

[0054] In a specific embodiment, after the fifth locking screw passes through the third oblique locking screw hole 414, the fifth upper threaded portion of the fifth locking screw is screwed into the lower edge of the third oblique locking screw hole 414. As the fifth upper threaded portion is screwed and tightened with the fastening thread, the screw cap portion of the fifth locking screw stays in the upper edge of the third oblique locking screw hole 414, and the screw shaft and nail head of the fifth locking screw are respectively passed through the third oblique locking screw hole 414 and implanted into the bone. During the implantation process, the inclination angle formed by the fifth locking screw and the third plane is the fifth vertical inclination angle ε, and the fifth vertical inclination angle ε is 0°; the inclination angle formed by the fifth locking screw and the second plane is the fifth horizontal inclination angle ε′, and the fifth horizontal inclination angle ε′ is 0°.

[0055] Figure 6 for Figure 1 The cross-section of the BB part of the middle head. Figure 7 for Figure 1 Cross-section of the CC section of the middle head. Figure 8 for Figure 1 Sectional view of the DD part of the middle head; combined Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, the radius of curvature of the arc-shaped surface extending from the top to the middle of the inner surface of the first fixing portion 41 gradually increases. Specifically, the radius of curvature of the bottom edge of the horizontal section between the top locking screw hole 410 and the first oblique locking screw hole 411 is R1, and the value range is 33 to 38 mm; the radius of curvature of the bottom edge of the horizontal section between the second oblique locking screw hole 412 and the middle locking screw hole 413 is R2, and the value range is 21 to 25 mm; the radius of curvature of the bottom edge of the horizontal section between the third oblique locking screw hole 414 and the lower locking screw hole 415 is R3, and the value range is 15 to 20 mm.

[0056] The two lower locking screw holes 415 are located at the lower part of the first fixing part 41 and are symmetrically arranged on both sides of the long axis of the proximal humeral shaped block, and are arranged below the third oblique locking screw hole 414. The function of the two lower locking screw holes 415 is to fix the first fixing part 41 to its surface through locking screws from the lower end surface of the humeral head, so that the screws passing through the screw holes are evenly distributed in the entire area of ​​the humeral head, avoiding necrosis of the humeral head and excessive bone loss, and avoiding collapse of the humeral head; similarly, the two lower locking screw holes 415 also have upper and lower edge portions inside;

[0057] In a specific embodiment, after the sixth locking screw passes through the two lower locking screw holes 415, the sixth upper threaded portion of the sixth locking screw is screwed into the lower edge portions of the two lower locking screw holes 415. As the sixth upper threaded portion is screwed and tightened with the fastening thread, the screw cap portion of the sixth locking screw stays in the upper edge portions of the two lower locking screw holes 415. The screw shaft portion and the nail head portion of the sixth locking screw are respectively passed through the two lower locking screw holes 415 and implanted into the bone. During the implantation process, the inclination angle formed by the sixth locking screw and the third plane is the sixth vertical inclination angle ζ, and the sixth vertical inclination angle ζ ranges from 7 to 13°. The sixth vertical inclination angle ζ intersects with the fifth vertical inclination angle ε; the inclination angle formed by the sixth locking screw and the second plane is the sixth horizontal inclination angle ζ′. The horizontal inclination angle ζ′ is equal to the fourth horizontal inclination angle δ′; the two lower locking screw holes 415 have the same penetration direction and are adjacent to each other, and the symmetrical arrangement mode and penetration direction of the lower locking screw hole 415 and the top locking screw hole 410 and the middle locking screw hole 413 are different from the arrangement mode and penetration direction of the first oblique locking screw hole 411, the second oblique locking screw hole 412 and the third oblique locking screw hole 414. In addition to realizing the spatial three-dimensional cross structure of the locking screw, the penetration and arrangement mode of the above-mentioned locking screw holes in the first fixing part 41 make the screws more evenly distributed in the humeral head, and can also make the screws provide greater holding force, and the force on each area of ​​the humeral head is more uniform, thereby making the stability of the special-shaped block better and avoiding damage to the humeral head.

[0058] Combination Figure 1As shown, the positioning hole 416 is composed of a circular hole, which is located at the upper and middle parts of the first fixing portion 41, and is specifically composed of a first positioning hole 4160, a second positioning hole 4161, a third positioning hole 4162, a fourth positioning hole 4163 and a fifth positioning hole 4164; wherein the first positioning hole 4160 is located at the upper part of the first fixing portion 41 and is between the two top locking screw holes 410, the second positioning hole 4161 is located at the upper part of the first fixing portion 41 and is between the second oblique locking screw hole 412 and the top locking screw hole 410, the third positioning hole 4162 is located at the middle part of the first fixing portion 41 and is between the two middle locking screw holes 413, the fourth positioning hole 4163 and the fifth positioning hole 4164 are respectively located below the two middle locking screw holes 413 and between the two sides of the third oblique locking screw hole 414, the aperture of the positioning hole 416 is smaller than the aperture of the locking screw hole, and the positioning hole 416 is used for temporary fixation of the proximal humeral shaped block during surgery.

[0059] Figure 3 A side view of a humeral proximal shaped block provided in an embodiment of the present invention (I), Figure 4 A side view (II) of the proximal humeral shaped block provided by an embodiment of the present invention; Figure 3 As shown, the third vertical inclination angle γ is the largest; Figure 4 As shown, the inclination of the second horizontal inclination angle β′ is the largest; in this embodiment, the locking screw holes are not arranged on the same plane. This design can realize that the locking screws are inserted into different areas of the humeral head, constructing a spatial three-dimensional cross structure, thereby achieving the purpose of increasing the holding force of the locking screws, and at the same time making the special-shaped block more firmly fixed to the surface of the humerus.

[0060] Figure 5 for Figure 2 The cross-section of the AA section, combined with Figure 1 , Figure 2 and Figure 5 As shown, the outer surface of the second fixing portion 42 is set to be an arc-shaped curved surface with a certain curvature, and two adjacent fixing screw holes 420 are set in the arc-shaped curved surface and are adjacently set along the long axis direction of the second fixing portion 42. The interior of the fixing screw hole 420 is specifically composed of an upper edge 4201 and a lower edge 4202. The surface of the upper edge 4201 is a smooth curved surface that matches the upper screw connection portion of the locking screw, and the surface of the lower edge 4202 is provided with a fastening thread, and an intermediate groove 4201 is provided between the upper edge 4201 and the lower edge 4202. 21. The aperture of the fixing screw hole 420 is the same as the aperture of the locking screw hole; the inner surface of the second fixing portion 42 which fits with the humeral shaft is also provided with an arc-shaped surface with a certain curvature. In order to make the second fixing portion 42 fit more closely with the humerus and reinforce the fracture site more firmly, the curvature of the inner surface of the arc-shaped surface of the second fixing portion 52 can be adapted according to different patients and different fracture sites, so that the proximal humeral special-shaped block is more suitable for the bones of Asians and Chinese.

[0061] like Figure 5 As shown, a connecting rod connecting circular hole 422 is provided on the side of the second fixing portion 42, and the connecting rod connecting circular hole 422 is specifically composed of a first connecting rod connecting circular hole 4221 and a second connecting rod connecting circular hole 4222. The diameter of the first connecting rod connecting circular hole 4221 and the diameter of the second connecting rod connecting circular hole 4222 are equal or unequal, and the first connecting rod connecting circular hole 4221 and the second connecting rod connecting circular hole 4222 are symmetrically arranged on both sides of the fixing screw hole 420. The connecting rod connecting circular hole 422 is used to firmly connect the connecting rod 2 to the proximal humeral special-shaped block through a locking screw.

[0062] A cross hole 423 is formed at the intersection of the first connecting rod connecting circular hole 4221 , the second connecting rod connecting circular hole 4222 and the fixing screw hole 420 . The cross hole 423 is mainly used to squeeze the connecting rod 2 through the locking screw, so as to fix the connecting rod 2 in the second fixing portion 52 .

[0063] In a specific embodiment, the first connecting rod 21 and the second connecting rod 22 are respectively inserted into the first connecting rod connecting circular hole 4221 and the second connecting rod connecting circular hole 4222. After the seventh locking screws are respectively passed through two adjacent fixing screw holes 420, the seventh upper threaded portion of the seventh locking screw is screwed into the lower edge 4202 of the fixing screw hole 420. As the seventh upper threaded portion is screwed and tightened with the fastening thread, the gap in the middle groove 421 is further compressed, and the screw cap portion of the seventh locking screw stays in the upper edge 4201 of the fixing screw hole 420, squeezing the first connecting rod connecting circular hole 4221 and the second connecting rod connecting circular hole 4222 while fixing the first connecting rod 21 and the second connecting rod 22 to the second fixing portion 42 through the cross hole 423. The screw portion and the nail head portion of the seventh locking screw are respectively passed through the fixing screw holes 420 and implanted into the bone.

[0064] The above is an introduction to the various components of the proximal humeral shaped block provided in the embodiment of the present invention and the connection relationship between them. Figure 1 and Fig. 9 , the use of the proximal humeral shaped block is described in detail;

[0065] When doctors use the proximal humeral shaped block to fix the fracture site during tibial fracture surgery, the locking screw and the connecting rod 2 need to be used in combination. The process of combined use is described in detail below.

[0066] During a specific tibial fracture surgery, the doctor aligns and fits the first fixing portion 41 of the proximal humeral shaped block with the bone surface of the upper outer end of the humerus, and respectively inserts the locking screws into the two top locking screw holes 410, the first oblique locking screw hole 411, the second oblique locking screw hole 412, the two middle locking screw holes 413, the third oblique locking screw hole 414 and the two lower locking screw holes 415. After the locking screws are inserted into the locking screw holes, the upper threaded portion of the locking screw is screwed with the lower edge of the locking screw hole. As the upper threaded portion is screwed and tightened with the fastening thread, the screw cap portion of the locking screw stays in the upper edge of the locking screw hole, and the screw rod portion and the nail head portion of the locking screw are respectively inserted into the bone after passing through the locking screw holes. Thus, the first fixing portion 41 of the proximal humeral shaped block is fixed to the bone surface of the outer side of the humerus, and the first connecting rod 21 and the second connecting rod 22 are inserted into the bone in sequence. The first connecting rod connecting circular hole 4221 and the second connecting rod connecting circular hole 4222, and the locking screws are respectively passed through two adjacent fixing screw holes 420. After the locking screw passes through the fixing screw hole 420, the upper threaded portion of the locking screw is screwed with the lower edge 4202 of the fixing screw hole 420. As the upper threaded portion is screwed and tightened with the fastening thread, the screw cap portion of the locking screw stays in the upper edge 4201 of the fixing screw hole 420, and the gap in the middle groove 421 is further compressed. The locking screw squeezes the first connecting rod connecting circular hole 4221 and the second connecting rod connecting circular hole 4222, and at the same time, fixes the first connecting rod 21 and the second connecting rod 22 to the second fixing portion 42 through the cross hole 423. The screw portion and the nail head of the locking screw are respectively passed through the fixing screw holes 420 and implanted into the bone. At this point, the proximal humeral special-shaped block is completely fixed to the humeral head.

[0067] A proximal humeral special-shaped block provided in an embodiment of the present invention is designed as an integrally formed structure, which is easy to install, achieves connection stability, improves fit, reduces secondary damage to bones, improves patient comfort, and ensures safety in use.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiment, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiment or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A proximal humeral shaped block, characterized in that: The humeral proximal shaped block specifically comprises: a first fixing portion and a second fixing portion, wherein the first fixing portion and the second fixing portion are connected: The inner surface of the first fixing part is an arc-shaped surface, which is used to match the curved surface of the upper end of the humerus; the first fixing part includes: Two top locking screw holes are located on the upper part of the first fixing part. When the first locking screw passes through the top locking screw hole, the first upper screw connection part of the first locking screw is screwed with the top locking screw hole. The vertical inclination angle of the normal to the plane where the first locking screw and the second fixing part are located is a first vertical inclination angle, and the horizontal inclination angle of the normal to the plane where the first locking screw and the second fixing part are located is a first horizontal inclination angle. A first oblique locking screw hole is located below the top locking screw hole, and when the second locking screw passes through the first oblique locking screw hole, the second upper screw connection portion of the second locking screw is screwed with the first oblique locking screw hole, and the vertical inclination angle of the second locking screw and the normal of the plane where the second fixing portion is located is a second vertical inclination angle, and the horizontal inclination angle of the second locking screw and the normal of the plane where the second fixing portion is located is a second horizontal inclination angle; a second oblique locking screw hole, located below the first oblique locking screw hole; when the third locking screw passes through the second oblique locking screw hole, the third upper screw connection portion of the third locking screw is screwed with the second oblique locking screw hole; a vertical inclination angle of the third locking screw and the normal to the plane where the second fixing portion is located is a third vertical inclination angle; the third vertical inclination angle intersects with the second vertical inclination angle; a horizontal inclination angle of the third locking screw and the normal to the plane where the second fixing portion is located is a third horizontal inclination angle; Two middle locking screw holes are located below the second oblique locking screw hole. When the fourth locking screw passes through the middle locking screw hole, the fourth upper screw connection portion of the fourth locking screw is screwed with the middle locking screw hole. The vertical inclination angle between the fourth locking screw and the normal of the plane where the second fixing portion is located is a fourth vertical inclination angle, and the horizontal inclination angle between the fourth locking screw and the normal of the plane where the second fixing portion is located is a fourth horizontal inclination angle. a third oblique locking screw hole, located below the middle locking screw hole; when the fifth locking screw passes through the third oblique locking screw hole, the fifth upper screw-connecting portion of the fifth locking screw is screwed with the third oblique locking screw hole; a vertical inclination angle between the fifth locking screw and the normal to the plane where the second fixing portion is located is a fifth vertical inclination angle; and a horizontal inclination angle between the fifth locking screw and the normal to the plane where the second fixing portion is located is a fifth horizontal inclination angle; Two lower locking screw holes are located below the third oblique locking screw hole. When the sixth locking screw passes through the lower locking screw hole, the sixth upper screw connection portion of the sixth locking screw is screwed with the lower locking screw hole. The vertical inclination angle of the sixth locking screw and the normal to the plane where the second fixing portion is located is a sixth vertical inclination angle; the sixth vertical inclination angle intersects with the fifth vertical inclination angle, and the horizontal inclination angle of the sixth locking screw and the normal to the plane where the second fixing portion is located is a sixth horizontal inclination angle, and the sixth horizontal inclination angle is equal to the fourth horizontal inclination angle; The first vertical inclination angle ranges from 12 to 18°, the second vertical inclination angle ranges from 0°, the third vertical inclination angle ranges from 25 to 31°, the fourth vertical inclination angle ranges from 13 to 18°, and the sixth vertical inclination angle ranges from 7 to 13°; The first horizontal inclination angle is 0°, the second horizontal inclination angle ranges from 9° to 15°, the third horizontal inclination angle ranges from 4° to 11°, and the fourth horizontal inclination angle and the sixth horizontal inclination angle range from 7° to 13°; The second fixing portion includes: A fixing screw hole, located on the surface of the second fixing portion; The connecting rod connecting circular hole is located on the side of the second fixing part; the connecting rod is inserted into the connecting rod connecting circular hole, and when the seventh locking screw passes through the fixing screw hole, the seventh upper threaded portion of the seventh locking screw is threadedly connected with the fixing screw hole, thereby squeezing the connecting rod connecting circular hole to fix the connecting rod and the second fixing part.

2. The proximal humeral shaped block according to claim 1, characterized in that: The curvature radius of the bottom edge of the horizontal section of the first fixing portion between the top locking screw hole and the first oblique locking screw hole is R1, and the value range of R1 is 33 to 38 mm; The curvature radius of the bottom edge of the horizontal section of the first fixing portion between the second oblique locking screw hole and the middle locking screw hole is R2, and the value range of R2 is 21 to 25 mm; The curvature radius of the bottom edge of the horizontal section of the first fixing portion between the third oblique locking screw hole and the lower locking screw hole is R3, and the value range of R3 is 15 to 20 mm.

3. The proximal humeral shaped block according to claim 1, characterized in that: The first fixing portion also has one or more positioning holes for use in temporarily fixing the proximal humeral shaped block during surgery.

4. The proximal humeral shaped block according to claim 1, characterized in that: The first fixing portion and the second fixing portion are an integrally formed structure.

5. The proximal humeral special-shaped block according to claim 1, characterized in that: The connecting rod connecting circular hole specifically includes: a first connecting rod connecting circular hole and a second connecting rod connecting circular hole; The diameter of the first connecting rod connecting circular hole and the diameter of the second connecting rod connecting circular hole are equal or different.

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