An anterolateral column support device for femoral head necrosis

Abstract

The utility model relates to an anterolateral column support device for femoral head necrosis, comprising a support part, a fixing part and a locking piece, the support part having a first upper surface and a first lower surface, the first upper surface comprising a first curved surface and a second curved surface arranged adjacent to each other, the first curved surface having the same shape as the outer surface of the femoral head, the second curved surface having the same shape as the outer surface of the femoral neck, the support part being solid, and the support part being arranged at the junction of the femoral head and the femoral neck; the first curved surface and the second curved surface are designed by taking the characteristic structure of the junction of the femoral neck and the femoral head as a reference, and the locking piece is arranged at the femoral neck by taking advantage of the structure of the femoral neck, so that the support device can be stably fixed on the anterolateral side of the femoral head, while reducing the structural influence of the locking piece on the femur, thereby meeting the use requirements.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an anterolateral column supporting device for femoral head necrosis. Background Art

[0002] Avascular necrosis of the femoral head is a common and difficult disease in orthopedics. In the early stage of avascular necrosis of the femoral head, it can be treated with core decompression, rotational osteotomy, bone transplantation with or without blood vessels, etc., to delay or avoid total hip replacement. Unfortunately, many patients do not receive early diagnosis, let alone appropriate treatment, resulting in rapid collapse of the femoral head, uneven joint surface, secondary osteoarthritis, pain and dysfunction.

[0003] There is a document entitled "A femoral head anterolateral column support device for femoral head necrosis" with publication number CN218961040U, which provides an ellipsoid, a fixing bolt, and a fixing fin. The ellipsoid is divided into an upper ellipsoid and a lower pyramid; the outer surface of the upper ellipsoid is set to a smooth ellipsoidal sphere; the lower pyramid is set to a quadrangular pyramid, and its outer surface is set to a rough surface porous layer structure, a trabecular bone structure; the fixing bolt is fixedly connected to the front and rear side surfaces of the lower pyramid, and the length of the fixing bolt is set to 5-30mm; the fixing fin is fixedly connected to the left and right side surfaces of the lower pyramid, and its length is set to 2-5mm; the ellipsoid, the fixing bolt, and the fixing fin are used as a device for partial femoral head replacement, the ischemic necrotic area of ​​the femoral head is replaced, and a technical solution of partial replacement of the femoral head is realized, but this technical solution has the following problems: the replacement of the above technical solution is suitable for replacement when the top of the femoral head is necrotic, but when the anterior and lateral area of ​​the femoral head is necrotic, the above support device cannot be adapted. The femoral head is connected to the hip joint, and the necrotic area is located on the anterolateral side of the femoral head, which can cause significant dysfunction and pain in patients. This is because the anterolateral side is one of the key areas where the femoral head bears heavy pressure, especially when walking. When necrosis affects this area, it can cause structural damage to the femoral head, affecting its support and weight-bearing function, causing pain and dysfunction in patients. Utility Model Content

[0004] In view of the above problems, the utility model provides an anterolateral column support device for femoral head necrosis, which solves the problem that the existing support device cannot adapt to the replacement of the anterolateral femoral head necrosis.

[0005] To achieve the above-mentioned purpose, the present application provides an anterior and lateral column support device for femoral head necrosis, including a support part, a fixing part and a locking piece, the support part having a first upper surface and a first lower surface, the first upper surface comprising a first curved surface and a second curved surface arranged adjacent to each other, the first curved surface being lower than the outer surface of the femoral head, and the second curved surface being consistent with the outer surface of the femoral neck, the support part being arranged at the junction of the femoral head and the femoral neck, the support part being further provided with first growth pores distributed in a first preset manner; the fixing part having a second upper surface and a second lower surface, the second upper surface being connected to the first lower surface, the fixing part being provided with second growth pores distributed in a second preset manner; the locking piece sequentially passes through the support part and the fixing part, and is suspended downward, the locking piece being used to fix the support part and the fixing part on the femur.

[0006] In some embodiments, a first fastening hole is provided on the supporting portion, and the first fastening hole is arranged on the second curved surface; a second fastening hole is provided on the fixing portion, and the first fastening hole is coaxial with and connected to the second fastening hole; the locking member passes through the first fastening hole and the second fastening hole in sequence and protrudes out of the second lower surface.

[0007] In some embodiments, the locking member includes a first connecting portion and a second connecting portion connected sequentially from top to bottom, a portion of the first connecting portion is placed in the first fastening hole and the second fastening hole, a portion of the first connecting portion protrudes out of the second lower surface, and the second connecting portion is provided with a first external thread.

[0008] In some embodiments, the second lower surface is further coated with a growth-promoting layer, and the material of the growth-promoting layer includes any one of bone cement, bone powder, bone marrow, periosteum, and bone matrix.

[0009] In some embodiments, a growth promoting layer is coated in the first growth pore and / or the second growth pore.

[0010] In some embodiments, the locking element is a locking screw, and the first connecting portion is provided with a second external thread; an internal thread is provided on the inner side wall of the first fastening hole, and the second external thread is adapted to the internal thread.

[0011] In some embodiments, a radial cross-sectional dimension of the second external thread is greater than a radial cross-sectional dimension of the first external thread.

[0012] In some embodiments, the supporting portion and the fixing portion are integrally formed.

[0013] In some embodiments, there are multiple locking members, and the multiple locking members sequentially penetrate the supporting portion and the fixing portion in the area where the second curved surface is located, and the multiple locking members are distributed in a third preset manner.

[0014] In some embodiments, the diameter of the locking piece is 2.5mm-3.0mm. Different from the prior art, in the above technical solution, the anterior lateral column support device for femoral head necrosis includes a support portion, a fixing portion and a locking piece, the support portion has a first upper surface and a first lower surface, the first upper surface includes a first curved surface and a second curved surface arranged adjacent to each other, the first curved surface has the same shape as the outer surface of the femoral head, the second curved surface has the same shape as the outer surface of the femoral neck, the support portion is solid, and the support portion is arranged at the junction of the femoral head and the femoral neck; the fixing portion has a second upper surface and a second lower surface, the second upper surface is connected to the first lower surface, and the second lower surface is provided with second growth pores distributed in a second preset manner; the locking piece passes through the support portion and the fixing portion in sequence, and is suspended downward, and the locking piece is used to fix the support portion and the fixing portion on the femur. When in use, the anterior and lateral column support device for femoral head necrosis is placed at the junction of the femoral neck and the femoral head, so that the second curved surface coincides with the outer surface of the femoral neck, and then the locking piece is used to fix the entire support device in the femur from the second curved surface in the area where the femoral neck is located, so as to realize the use of the support device on the anterolateral side of the femoral head. Compared with the prior art, the support device shown in the present technical solution uses the characteristic structure of the junction of the femoral neck and the femoral head as a reference to design the first curved surface and the second curved surface, and at the same time uses the structure of the femoral neck to set the locking piece at the femoral neck, so as to realize the stable fixation of the support device on the anterolateral side of the femoral head while reducing the structural influence of the locking piece on the femur, thereby meeting the use requirements.

[0015] The above-mentioned records related to the content of the utility model are only an overview of the technical solution of the utility model. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the utility model, and then implement it according to the text of the specification and the contents recorded in the drawings, and in order to make the above-mentioned purpose and other purposes, features and advantages of the utility model easier to understand, the specific implementation method and drawings of the utility model are explained below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present invention and other related contents, and shall not be considered as limitations of the present invention.

[0017] In the drawings of the specification:

[0018] Figure 1 It is a first schematic diagram of the anterolateral column support device for femoral head necrosis according to a specific implementation method;

[0019] Figure 2 A second schematic diagram of the anterolateral column support device for femoral head necrosis according to a specific implementation method;

[0020] Figure 3 for Figure 2sectional view of

[0021] Figure 4 It is a schematic diagram of an embodiment of the bottom surface of the anterolateral column support device for femoral head necrosis described in the specific implementation method;

[0022] Figure 5 A third schematic diagram of the anterolateral column support device for femoral head necrosis according to a specific implementation method;

[0023] Figure 6 It is a schematic diagram of another embodiment of the locking element described in the specific implementation manner.

[0024] The reference numerals in the above drawings are described as follows:

[0025] 1. Support part;

[0026] 11. The first curved surface;

[0027] 12. Second surface;

[0028] 13. First fastening hole;

[0029] 14. First growth pore;

[0030] 2. Fixed part;

[0031] 21. Second growth pore;

[0032] 22. Second fastening hole;

[0033] 3. Locking hardware;

[0034] 31. a first connecting portion;

[0035] 32. a second connecting portion;

[0036] 4. Femur;

[0037] 41. Femoral head;

[0038] 42. Femoral neck. DETAILED DESCRIPTION

[0039] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purposes and effects that can be achieved of the present invention, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present invention, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present invention.

[0040] Reference to "embodiment" in this document means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present invention, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0041] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which the present invention belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit the present invention.

[0042] In the description of the present invention, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0043] In the present invention, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0044] Without further restrictions, in the present invention, the words "include", "comprises", "has" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0045] Similar to the understanding in the Examination Guidelines, in the present invention, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of the present invention, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0046] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0047] Unless otherwise expressly specified or limited, in the description of the embodiments of the present utility model, the terms "install", "connect", "connect", "fix", "set" and the like used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the technical field of the present utility model, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to the specific circumstances.

[0048] See also Figures 1 to 6 The present embodiment provides an anterior lateral column support device for femoral head necrosis, including a support portion 1, a fixing portion 2 and a locking piece 3. The support portion 1 has a first upper surface and a first lower surface, the first upper surface includes a first curved surface 11 and a second curved surface 12 arranged adjacent to each other, the first curved surface 11 is lower than the outer surface of the femoral head 41, and the second curved surface 12 coincides with the outer surface of the femoral neck 42. The support portion 1 is arranged at the junction of the femoral head 41 and the femoral neck 42, and the support portion 1 is also provided with a first growth pore 14 distributed in a first preset manner; the fixing portion 2 has a second upper surface and a second lower surface, the second upper surface is connected to the first lower surface, and the fixing portion 2 is provided with a second growth pore 21 distributed in a second preset manner; the locking piece 3 sequentially penetrates the support portion 1 and the fixing portion 2, and is suspended downward, and the locking piece 3 is used to fix the support portion 1 and the fixing portion 2 on the femur 4.

[0049] In this embodiment, the support device is divided into three parts: a support portion 1, a fixing portion 2 and a locking member 3. Among them, the support portion 1 is a structure of the outer surface of the femoral head 41 area of ​​the support device close to the femur 4, and is also the main support force area when the femur 4 is connected to the hip bone. In this embodiment, the support portion 1 is also provided with a first growth pore 14 distributed in a first preset manner to strengthen the tissue connection between the support portion and the femoral head. Specifically, the support portion 1 includes a first upper surface and a first lower surface, the first upper surface has a first curved surface 11 and a second curved surface 12, the first curved surface 11 is lower than the outer surface of the femoral head 41, and the second curved surface 12 is consistent with the outer surface of the femoral neck 42, that is, when the support device is placed on the femur 4, the first curved surface 11 needs to be placed in the femoral head 41 area, and the second curved surface 12 needs to be placed in the femoral neck 42 area, so as to achieve the correct installation of the support device in the anterolateral area composed of the femoral head 41 and the femoral neck 42.

[0050] The fixing part 2 is a structure in the support device for fixing the support part 1 in the area of ​​the femoral head 41, that is, the part where the support part 1 and the femoral head 41 meet. The fixing part 2 includes a second upper surface and a second lower surface, wherein the first lower surface is connected to the second upper surface. When the fixing part 2 and the support part 1 are integrally formed, the first lower surface and the second upper surface belong to a whole, and there is no clear boundary distinction. The second lower surface is the area where the fixing cloth is in direct contact with the bone in the femoral head 41. In this embodiment, the fixing part 2 is provided with a plurality of second growth pores 21, and the second growth pores 21 extend from the second lower surface into the interior of the fixing part 2. The second growth pores 21 are distributed in a second preset manner, and the second preset manner can refer to the existing distribution mode of the growth pores. Through the plurality of second growth pores 21, it is convenient for the femur 4 to fuse with the support device after the support device is implanted, and the growth medium of the bone can be connected to the support device through the second growth pores 21, so as to achieve a close connection between the support device and the femur 4, and improve the adaptability of the entire support device on the femur 4.

[0051] In this embodiment, a locking piece 3 is also included, which is used to fix the fixing part 2 and the supporting part 1 on the femur 4, and is also a necessary connector during the implantation of the supporting device. Specifically, the locking piece 3 can be an acetabular cup screw or a locking screw, and the locking piece 3 can be set according to actual needs.

[0052] See also Figure 2 and Figure 3 In some embodiments, the support portion 1 and the fixing portion 2 are integrally formed. This method can make the manufacturing of the support portion 1 and the fixing portion 2 simpler, and there is no need to set an additional connection method between the support portion 1 and the fixing portion 2. At the same time, the integrity of the support device can be better preserved, which is more in line with actual use requirements.

[0053] See also Figure 2 and Figure 3 In some embodiments, a first fastening hole 13 is provided on the supporting portion 1, and the first fastening hole 13 is arranged on the second curved surface 12; a second fastening hole 22 is provided on the fixing portion 2, and the first fastening hole 13 is coaxial with and connected to the second fastening hole 22; the locking member 3 passes through the first fastening hole 13 and the second fastening hole 22 in sequence and protrudes out of the second lower surface.

[0054] In this embodiment, the support part 1 is provided with a first fastening hole 13, and the fixing part 2 is provided with a second fastening hole 22. The first fastening hole 13 and the second fastening hole 22 are coaxial, and the first fastening hole 13 and the second fastening hole 22 are interconnected to form a channel for the locking member 3 to pass through. In this embodiment, in order to enhance the tightness of the connection between the support device and the bone of the femur 4, the inner side walls of the first fastening hole 13 and the second fastening hole 22 can be provided with internal threads to be threadedly connected with the locking member 3; or, the inner side walls of the first fastening hole 13 and the second fastening hole 22 can be coated with a bioadhesive having an adhesive effect to fix the locking member 3 on the first fastening hole 13 and the second fastening hole 22.

[0055] Among them, the first fastening hole 13 is set at the second curved surface 12, which can be understood as follows: the second curved surface 12 is the area in the support part 1 that coincides with the femoral neck 42 part, and the first fastening hole 13 is set on the second curved surface 12, that is, the setting position of the locking piece 3 in the entire support device is at the second curved surface 12. When the support device is fixed on the femur 4, the locking piece 3 is also set at the femoral neck 42 of the femur 4, which will not destroy the supporting strength of the support device in the entire femoral head 41 area, and retains the integrity of the support part 1 in the main force-bearing area, so that the support device and the femur 4 are more adaptable.

[0056] See also Figure 4 and Figure 5 In some embodiments, the number of the locking members 3 is multiple, and the multiple locking members 3 sequentially penetrate the support portion 1 and the fixing portion 2 in the area where the second curved surface 12 is located, and the multiple locking members 3 are distributed in a fourth preset manner. In this embodiment, the number of the locking members 3 is not limited to a single one, and multiple locking members 3 can also be provided according to actual needs. For example, when the number of the locking members 3 is two, they can be arranged in parallel in the area covered by the second curved surface 12 to further increase the connection stability between the support portion 1, the fixing portion 2 and the femur 4.

[0057] When this embodiment is in use, the anterolateral column support device for femoral head necrosis is placed at the junction of the femoral neck 42 and the femoral head 41, so that the second curved surface 12 coincides with the outer surface of the femoral neck 42, and the first curved surface 11 coincides with the outer surface of the femoral head 41. The locking piece 3 is then used to fix the entire support device in the femur 4 from the second curved surface 12 in the area where the femoral neck 42 is located, so as to realize the use of the support device on the anterolateral side of the femoral head 41. The first curved surface 11 and the second curved surface 12 are designed using the characteristic structure of the junction of the femoral neck 42 and the femoral head 41 as a reference. At the same time, the locking piece 3 is set at the femoral neck 42 using the structure of the femoral neck 42, so that the support device is stably fixed on the anterolateral side of the femoral head 41, while reducing the structural influence of the locking piece 3 on the femur 4, thereby meeting the use requirements.

[0058] In some embodiments, the locking member 3 includes a first connecting portion 31 and a second connecting portion 32 connected sequentially from top to bottom, a portion of the first connecting portion 31 is placed in the first fastening hole 13 and the second fastening hole 22, a portion of the first connecting portion 31 protrudes out of the second lower surface, and the second connecting portion 32 is provided with a first external thread.

[0059] In this embodiment, the locking member 3 is divided into two parts, the upper part is recorded as the first connection part 31, and the lower part is recorded as the second connection part 32, wherein the first connection part 31 is the main connection part between the locking member 3 and the support part 1 and the fixing part 2 when the locking member 3 is embedded in the support part 1 and the fixing part 2. In normal use, part of the first connection part 31 protrudes out of the second lower surface after passing through the support part 1 and the fixing part 2 in sequence, and the second connection part 32 and the first connection part 31 can be integrally formed, and the second connection part 32 is arranged at the end of the first connection part 31 protruding from the second lower surface, and the second connection part 32 is provided with a first external thread. Preferably, the first external thread is a self-tapping thread, and in the process of screwing the locking member 3, the first external thread will gradually screw into the bone of the femur 4 under the action of force, so as to keep the entire support device fixed to the femur 4.

[0060] In some embodiments, the second lower surface is further coated with a growth-promoting layer, and the material of the growth-promoting layer includes any one of bone cement, bone powder, bone marrow, periosteum, and bone matrix.

[0061] The growth-promoting layer can promote the fusion of bones and support devices. It is generally made of biomaterials. Biomaterials can fuse with bones to form a whole. Specifically, common biomaterials include bone cement, bone powder, bone marrow, periosteum, bone matrix, etc. Among them, bone cement is a polymethyl methacrylate (PMMA)-based biological powder, which is often used to fix the joint between the support device and the bone; bone powder is fine particles extracted from the patient's own bones or other donor bones, which are used to fill bone defects and increase bone volume; bone marrow, periosteum, and bone matrix are rich in growth factors, cytokines and other bioactive components, which can stimulate osteocyte proliferation and osteogenesis, and promote bone growth and fusion. The growth-promoting layer can be used to fill bone defects, strengthen the mechanical connection between the bone and the support device interface, and promote the fusion of bone growth and the support device.

[0062] In some embodiments, a growth promoting layer is coated in the first growth pore 14 and / or the second growth pore 21 .

[0063] See also Figure 6 In some embodiments, the locking member 3 is a locking screw, and the first connection portion 31 is provided with a second external thread; the inner wall of the first fastening hole 13 is provided with an internal thread, and the second external thread is adapted to the internal thread. The locking screw is provided with a second external thread on the first connection portion 31, and the inner wall of the first fastening hole 13 is provided with an internal thread, that is, the second external thread covers the outer surface of the first connection portion 31 placed in the first fastening hole 13. When the locking member 3 is screwed in, the second external thread is adapted to be connected with the internal thread of the first fastening hole 13, so as to improve the connection stability between the locking member 3 and the support portion 1.

[0064] See also Figure 6 In some embodiments, the radial cross-sectional dimension of the second external thread is greater than the radial cross-sectional dimension of the first external thread. That is, the first connecting portion 31 and the second connecting portion 32 are in a stepped shaft structure, which further improves the connection stability between the locking element 3 and the supporting portion 1, and between the locking element 3 and the bone, reduces the probability of the locking element 3 being loosened, and prolongs the service life of the supporting device.

[0065] In some embodiments, the diameter of the locking element is 2.5 mm-3.0 mm.

[0066] In the above technical scheme, the anterior lateral column support device for femoral head necrosis includes a support part 1, a fixing part 2 and a locking piece 3, the support part 1 has a first upper surface and a first lower surface, the first upper surface includes a first curved surface 11 and a second curved surface 12 arranged adjacent to each other, the first curved surface 11 has the same shape as the outer surface of the femoral head 41, and the second curved surface 12 has the same shape as the outer surface of the femoral neck 42, the support part 1 is solid, and the support part 1 is arranged at the junction of the femoral head 41 and the femoral neck 42; the fixing part 2 has a second upper surface and a second lower surface, the second upper surface is connected to the first lower surface, and the second lower surface is provided with second growth pores 21 distributed in a second preset manner; the locking piece 3 passes through the support part 1 and the fixing part 2 in sequence, and is suspended downward, and the locking piece 3 is used to fix the support part 1 and the fixing part 2 on the femur 4. When in use, the anterolateral column support device for femoral head necrosis is placed at the junction of the femoral neck 42 and the femoral head 41, so that the second curved surface 12 coincides with the outer surface of the femoral neck 42, and then the locking piece 3 is fixed to the femur 4 from the second curved surface 12 in the area where the femoral neck 42 is located, so as to realize the use of the support device on the anterolateral side of the femoral head 41. Compared with the prior art, the support device shown in the present technical solution uses the characteristic structure of the junction of the femoral neck 42 and the femoral head 41 as a reference to design the first curved surface 11 and the second curved surface 12. At the same time, the structure of the femoral neck 42 is used to set the locking piece 3 at the femoral neck 42, so that the support device can be stably fixed on the anterolateral side of the femoral head 41, while reducing the structural influence of the locking piece 3 on the femur 4, thereby meeting the use requirements.

[0067] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of the utility model, this does not limit the scope of patent protection of the utility model. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of the utility model using the contents recorded in the specification and drawings of the utility model, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of the utility model.

Claims

1. An anterolateral column support device for femoral head necrosis, characterized in that: include: A support portion having a first upper surface and a first lower surface, wherein the first upper surface includes a first curved surface and a second curved surface that are adjacently arranged, wherein the first curved surface is lower than the outer surface of the femoral head, and the second curved surface is consistent with the outer surface of the femoral neck, wherein the support portion is arranged at the junction of the femoral head and the femoral neck, and the support portion is further provided with first growth pores distributed in a first preset manner; A fixing portion having a second upper surface and a second lower surface, wherein the second upper surface is connected to the first lower surface, and the fixing portion is further provided with second growth pores distributed in a second preset manner; A locking piece passes through the supporting part and the fixing part in sequence and is suspended downward. The locking piece is used to fix the supporting part and the fixing part on the femur.

2. The anterolateral column support device for femoral head necrosis according to claim 1, characterized in that: The support portion is provided with a first fastening hole, and the first fastening hole is arranged at the second curved surface; The fixing portion is provided with a second fastening hole, and the first fastening hole is coaxial with and connected to the second fastening hole; The locking element passes through the first fastening hole and the second fastening hole in sequence and protrudes out of the second lower surface.

3. The anterolateral column support device for femoral head necrosis according to claim 2, characterized in that: The locking member includes a first connecting portion and a second connecting portion which are sequentially connected from top to bottom, a portion of the first connecting portion is disposed in the first fastening hole and the second fastening hole, a portion of the first connecting portion protrudes out of the second lower surface, and the second connecting portion is provided with a first external thread.

4. The anterolateral column support device for femoral head necrosis according to claim 3, characterized in that: The second lower surface is also coated with a growth-promoting layer, and the material of the growth-promoting layer includes any one of bone cement, bone powder, bone marrow, periosteum, and bone matrix.

5. The anterolateral column support device for femoral head necrosis according to claim 4, characterized in that: The growth promoting layer is coated in the first growth pore and / or the second growth pore.

6. The anterolateral column support device for femoral head necrosis according to claim 3, characterized in that: The locking element is a locking screw, and the first connecting portion is provided with a second external thread; An internal thread is provided on the inner side wall of the first fastening hole, and the second external thread is matched with the internal thread.

7. The anterolateral column support device for femoral head necrosis according to claim 6, characterized in that: A radial cross-sectional dimension of the second external thread is greater than a radial cross-sectional dimension of the first external thread.

8. The anterolateral column support device for femoral head necrosis according to claim 1, characterized in that: The supporting portion and the fixing portion are integrally formed.

9. The anterolateral column support device for femoral head necrosis according to claim 1, characterized in that: There are multiple locking members, and the multiple locking members sequentially penetrate the supporting portion and the fixing portion in the area where the second curved surface is located, and the multiple locking members are distributed in a third preset manner.

10. The anterolateral column support device for femoral head necrosis according to claim 1, characterized in that: The diameter of the locking piece is 2.5 mm-3.0 mm.

Images