Proximal femoral hip joint prosthesis and hip joint prosthesis using the same

Abstract

The present invention belongs to the technical field of medical prostheses, and discloses a proximal femoral hip joint prosthesis and a hip joint prosthesis using the same. The proximal femoral hip joint prosthesis includes: a prosthesis body, the prosthesis body includes a load-bearing support prosthesis on the lesser trochanter side close to the femoral neck of the human body and an auxiliary support prosthesis connected to the load-bearing support prosthesis and on the greater trochanter side close to the femoral neck of the human body. The load-bearing support prosthesis includes a solid prosthesis part and a plurality of first suture holes connected to the solid prosthesis part and located inside the auxiliary support prosthesis. Among them, the plurality of first suture holes are close to the greater trochanter side of the femoral neck of the human body. The load-bearing support prosthesis is configured as a solid structure, and the auxiliary support prosthesis is configured as a three-dimensional porous structure. The proximal femoral hip joint prosthesis of the present invention can improve the stability after implantation.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical prostheses, and particularly relates to a proximal femoral hip joint prosthesis and a hip joint prosthesis using the same. Background Art

[0002] In modern medicine, hip joint prosthesis replacement surgery is widely used clinically, and is mainly applied to patients with femoral neck fractures, osteoarthritis of the hip, rheumatoid arthritis, ankylosing spondylitis, etc. At present, hip joint prostheses are divided into various types, one of which is a tumor-type hip joint prosthesis, which can effectively improve the fixation effect after implantation due to the structures such as a chute, a cross beam, and a suture hole, etc., and is thus more practical. The tumor-type hip joint prosthesis includes a proximal femoral hip joint prosthesis and a distal femoral hip joint prosthesis connected thereto. The proximal femoral hip joint prosthesis mainly includes a femoral head prosthesis and an osteotomy segment prosthesis connected to the femoral head prosthesis for filling the osteotomy site of the human body, and is mainly used for treating patients with diseases such as tumors and bone defects that require large-area bone repair.

[0003] However, for the tumor-type hip joint prosthesis in the prior art, the proximal femoral hip joint prosthesis is often made into a full-solid metal structure, resulting in an increase in the stiffness of the prosthesis itself and prone to the phenomenon of stress shielding, that is, since the stiffness of the prosthesis is much greater than that of the bone tissue, the bone tissue is in a low-stress level for a long time, so that the bone tissue can have the problem of loss of healthy bone mass due to insufficient mechanical stimulation, thus easily causing osteoporosis and long-term prosthesis failure problems, and the prosthesis with a full-solid structure is relatively heavy in weight, and patients are prone to a certain degree of discomfort when using it. In addition, the bone ingrowth effect on the surface of the proximal femoral hip joint prosthesis in the prior art is poor, resulting in poor stability after implantation of the prosthesis, and even the prosthesis itself can produce debris and cause harm to the human body by infection.

[0004] In view of the deficiencies of the prior art, those skilled in the art urgently need to seek a proximal femoral hip joint prosthesis that can improve the stability after implantation to make up for the defects in the prior art. Summary of the Invention

[0005] In order to improve the stability after implantation, the purpose of the present invention is to provide a proximal femoral hip joint prosthesis.

[0006] The hip prosthesis for the upper femur in the embodiment of the present invention includes: a prosthesis body, which includes a load-bearing support prosthesis on the lesser trochanter side close to the femoral neck of the human body and an auxiliary support prosthesis connected to the load-bearing support prosthesis and on the greater trochanter side close to the femoral neck of the human body. The load-bearing support prosthesis includes a solid prosthesis part and a plurality of first suture holes connected to the solid prosthesis part and located inside the auxiliary support prosthesis. Among them, the plurality of first suture holes are close to the greater trochanter side of the femoral neck of the human body. The load-bearing support prosthesis is configured as a solid structure, and the auxiliary support prosthesis is configured as a three-dimensional porous structure.

[0007] Further, the longitudinal section of the auxiliary support prosthesis is configured as an inverted triangular structure. The inverted triangular structure includes a top edge formed at the top of the auxiliary support prosthesis, a side edge connected to the top edge and formed on the greater trochanter side of the auxiliary support prosthesis, and a hypotenuse connecting the top edge and the side edge. Among them, the length range of the top edge is 10 mm to 20 mm, and the length range of the side edge is 20 mm to 80 mm.

[0008] Further, the auxiliary support prosthesis further includes: a chute formed on the side surface of the auxiliary support prosthesis close to the greater trochanter side. The chute forms two chute wings on the side surface of the auxiliary support prosthesis. The first suture hole penetrates through the two chute wings and forms a first groove in the chute; and at least one cross beam connecting the two chute wings horizontally; among them, the chute and / or the cross beam are composed of a three-dimensional porous structure.

[0009] Further, the load-bearing support prosthesis further includes: a bone grafting hole penetrating through the solid prosthesis part and having an axis parallel to the first suture hole. Among them, the inside of the bone grafting hole is filled with a three-dimensional porous structure.

[0010] Further, the bone grafting hole includes two bone grafting hole segments symmetrically arranged on the solid prosthesis part. The two bone grafting hole segments gradually narrow towards each other until they communicate with each other.

[0011] Further, the bone grafting hole segment includes a second groove formed on the surface of the solid prosthesis part, a straight hole segment with an axis perpendicular to the second groove and connected to the second groove, and a tapered hole segment coaxially connected to the straight hole segment. Among them, three-dimensional porous structures are formed inside the second groove, the straight hole segment, and the tapered hole segment.

[0012] Further, the porosity range of the three-dimensional porous structure is 20% to 60%, and the pore diameter range of the three-dimensional porous structure is 40 μm to 100 μm.

[0013] Further, the three-dimensional porous structure of the auxiliary support prosthesis is processed by laser cladding technology.

[0014] Further, the load-bearing support prosthesis further includes a plurality of first rib structures connecting the solid prosthesis part and the first suture holes, and second rib structures connecting adjacent first suture holes.

[0015] Further, the wall thickness range of the first suture hole is from 1 mm to 2 mm.

[0016] Further, the load-bearing support prosthesis further includes a plurality of second suture holes formed inside the solid prosthesis part and close to the trochanter side of the femoral neck of the human body. The axis of the second suture hole is parallel to the axis of the first suture hole. Among them, the inner surface of the first suture hole and / or the second suture hole is configured as a smooth surface.

[0017] Further, the number of the first suture holes is set to 4, and the number of the second suture holes is set to 3.

[0018] The present invention also provides a hip joint prosthesis, which includes the above-mentioned upper femoral hip joint prosthesis and a lower femoral hip joint prosthesis connected to the upper femoral hip joint prosthesis.

[0019] Compared with the prior art, the upper femoral hip joint prosthesis of the embodiment of the present invention has the following advantages:

[0020] 1) The auxiliary support prosthesis with a three-dimensional porous structure formed by the upper femoral hip joint prosthesis of the embodiment of the present invention can be closer to the trabecular bone structure of the human body, so as to effectively improve the adhesion, proliferation and differentiation ability of osteoblasts, effectively promote the rapid fusion and fixation of the human bone mass and the auxiliary support prosthesis, and thus effectively improve the stability of the upper femoral hip joint prosthesis after the operation of the patient, enabling the patient to have better muscle strength and better motor function after the operation;

[0021] 2) The auxiliary support prosthesis is configured as a three-dimensional porous structure, which can also reduce the weight of the prosthesis body without changing the overall structure of the prosthesis body, so as to effectively reduce the discomfort caused by the heavy prosthesis after the operation of the patient;

[0022] 3) The auxiliary support prosthesis is configured as a three-dimensional porous structure, which reduces the stiffness of the upper femoral hip joint prosthesis of the embodiment of the present invention, so as to effectively reduce the occurrence of stress shielding. Compared with the prior art, it can effectively reduce bone loss, increase the service life of the upper femoral hip joint prosthesis, thus reducing the revision of the prosthesis, saving huge medical expenses, and reducing the incidence and probability of diseases of the patients;

[0023] 4) The upper femoral hip joint prosthesis of the embodiment of the present invention constructs the first suture hole as a solid structure and locates it inside the auxiliary support prosthesis. In this way, the solid structure can not only ensure the strength of the first suture hole, so that the first suture hole is not easily deformed, but also the combined design of the solid structure and the three-dimensional porous structure can improve the connection stability between the load-bearing support prosthesis and the auxiliary support prosthesis, thus effectively avoiding problems such as the shedding or displacement of the three-dimensional porous structure. Description of the Drawings

[0024] Figure 1 Schematic structural diagram of the upper femoral hip joint prosthesis according to an embodiment of the present invention;

[0025] Figure 2 is Figure 1 Side view of the upper femoral hip joint prosthesis shown;

[0026] Figure 3 is Figure 2 View of the upper femoral hip joint prosthesis shown in the direction of A-A;

[0027] Figure 4 is Figure 3 View of the upper femoral hip joint prosthesis shown in the direction of B-B. Detailed implementation manners

[0028] In order to better understand the purpose, structure and function of the present invention, the following further describes in detail a kind of upper femoral hip joint prosthesis of the present invention with reference to the accompanying drawings.

[0029] Figures 1 to 4 Shows the structure of the upper femoral hip joint prosthesis 100 according to an embodiment of the present invention. As Figures 1 to 4 shown, the upper femoral hip joint prosthesis 100 includes: a prosthesis body 1. Combining Figure 3 shown, the prosthesis body 1 includes a load-bearing support prosthesis 2 near the lesser trochanter side of the human femoral neck and an auxiliary support prosthesis 3 connected to the load-bearing support prosthesis 2 and near the greater trochanter side of the human femoral neck. The load-bearing support prosthesis 2 includes a solid prosthesis part 21 and a plurality of first suture holes 22 connected to the solid prosthesis part 21 and located inside the auxiliary support prosthesis 3. Among them, the plurality of first suture holes 22 are near the greater trochanter side of the human femoral neck. The load-bearing support prosthesis 2 is constructed as a solid structure, and the auxiliary support prosthesis 3 is constructed as a three-dimensional porous structure.

[0030] When the upper femoral hip joint prosthesis 100 of the embodiment of the present invention is in use, the prosthesis body 1 is implanted into the femoral medullary cavity of the patient. Among them, the load-bearing support prosthesis 2 is used to connect with the femoral head prosthesis to form the main load-bearing part of the human body, and the auxiliary support prosthesis 3 is used to fill the remaining bone defect in the femoral medullary cavity. It should be noted here that the load-bearing support prosthesis 2 and the auxiliary support prosthesis 3 of the prosthesis body 1 can be obtained through specific force analysis before the use of the upper femoral hip joint prosthesis 100. By constructing the load-bearing support prosthesis 2 of the upper femoral hip joint prosthesis 100 of the embodiment of the present invention into a solid structure and the auxiliary support prosthesis 3 into a three-dimensional porous structure, the upper femoral hip joint prosthesis 100 of the embodiment of the present invention can effectively support the human body through the load-bearing support prosthesis 2, and at the same time, the three-dimensional porous auxiliary support prosthesis 3 is constructed by multiple wire diameters and multiple pores formed by the intersection of multiple wire diameters, and each pore is interconnected. Therefore, the upper femoral hip joint prosthesis 100 of the embodiment of the present invention can have the following advantages:

[0031] 1) The three-dimensional porous structure of the auxiliary support prosthesis 3 can be closer to the trabecular bone structure of the human body, thereby effectively improving the adhesion, proliferation and differentiation ability of osteoblasts, and effectively promoting the rapid fusion and fixation of the human bone and the part of the auxiliary support prosthesis 3. Therefore, the upper femoral hip joint prosthesis 100 of the embodiment of the present invention can effectively improve the stability of the upper femoral hip joint prosthesis 100 after the operation of the patient, so that the patient has better muscle strength and better motor function after the operation;

[0032] 2) The auxiliary support prosthesis 3 is constructed into a three-dimensional porous structure, which can also effectively reduce the weight of the prosthesis body 1 without changing the overall structure of the prosthesis body 1, thereby effectively reducing the discomfort caused by the heavy prosthesis after the operation of the patient;

[0033] 3) The auxiliary support prosthesis 3 is constructed into a three-dimensional porous structure, which reduces the stiffness of the upper femoral hip joint prosthesis 100 of the embodiment of the present invention, thereby effectively reducing the occurrence of stress shielding. Compared with the prior art, it can effectively reduce bone loss, increase the service life of the upper femoral hip joint prosthesis 100, thereby reducing prosthesis revision, saving huge medical expenses, and reducing the incidence and probability of diseases of the patients;

[0034] 4) The upper femoral hip joint prosthesis 100 of the embodiment of the present invention constructs the first suture hole 22 into a solid structure and is located inside the auxiliary support prosthesis 3 (such as Figure 3As shown. In this way, the solid structure can not only ensure the strength of the first suture hole 22, so that the first suture hole 22 is not easily deformed, but also improve the connection stability between the load-bearing support prosthesis 2 and the auxiliary support prosthesis 3 due to the combined design of the solid structure and the three-dimensional porous structure, thus effectively avoiding problems such as shedding or displacement of the three-dimensional porous structure.

[0035] Preferably, as Figure 3 shown, the longitudinal section of the auxiliary support prosthesis 3 can be configured as an inverted triangular structure, which may include a top edge 31 formed at the top of the auxiliary support prosthesis 3, a side edge 32 connected to the top edge 31 and formed on the side of the auxiliary support prosthesis 3 close to the greater trochanter, and a hypotenuse 33 connecting the top edge 31 and the side edge 32. Among them, the length range of the top edge 31 can be 10 mm to 20 mm, and the length range of the side edge 32 can be 20 mm to 80 mm. It should be noted here that the inverted triangular structure should be an approximate inverted triangle, that is, its top edge 31 and side edge 32 can be approximately regarded as straight lines. The length of the top edge 31 and the length of the side edge 32 can be optimized according to the specific usage situation in combination with finite element analysis to ensure the supporting ability of the load-bearing support prosthesis 2. Preferably, the length of the side edge 32 can be greater than the length of the top edge 31, so that the side edge 32 can have a larger area for bone fusion. In this way, after the proximal femoral hip joint prosthesis 100 of the embodiment of the present invention is implanted into the femoral medullary cavity of the human body, the side edge 32 can obtain faster bone fusion, thereby effectively improving the postoperative recovery effect of the patient. In addition, the triangular structure also has more stable structural characteristics, making the overall structure of the auxiliary support prosthesis 3 more stable.

[0036] In the preferred embodiment as Figure 2 shown, the auxiliary support prosthesis 3 may further include: a chute 34 formed on the side of the auxiliary support prosthesis 3 close to the greater trochanter, the chute 34 forming two chute wings 341 on the side of the auxiliary support prosthesis 3, the first suture hole 22 passing through the two chute wings 341 and forming a first groove 342 in the chute 34; and at least one cross beam 343 connecting the two chute wings 341 (in combination with Figure 3as shown in the figure); wherein, the sliding groove 34 and / or the cross beam 343 are formed by a three-dimensional porous structure. Through this setting, in the femoral upper segment hip joint prosthesis 100 of the embodiment of the present invention, the sliding groove 34 and the cross beam 343 with a three-dimensional porous structure are formed on the auxiliary support prosthesis 3, which can further promote the fusion of the auxiliary support prosthesis 3 with the bone mass, thereby further improving the stability of the femoral upper segment hip joint prosthesis 100 of the embodiment of the present invention after connection. Preferably, the cross beam 343 may preferably be two to ensure the structural strength of the sliding groove wing 341. Preferably, the cross beam 343 may be integrally formed with the auxiliary support prosthesis 3. Specifically, during use, the ligaments of the patient's femoral neck are cut and sutured after bypassing the cross beam 343, that is, the ligaments are placed in the space formed by the sliding groove 34, which can further facilitate the fixation of the femoral upper segment hip joint prosthesis 100. At the same time, the gluteus medius muscle with bone blocks can be sutured together with the first suture hole 22 to more effectively improve the connection strength of the femoral upper segment hip joint prosthesis 100.

[0037] In the preferred embodiment as Figure 3 shown, the load-bearing support prosthesis 2 may further include: a bone grafting hole 23 passing through the solid prosthesis part 21 and having an axis parallel to the first suture hole 22. Wherein, the inside of the bone grafting hole 23 may be filled with a three-dimensional porous structure. Through this setting, after the femoral upper segment hip joint prosthesis 100 of the embodiment of the present invention is implanted into the medullary cavity of the patient's femur, the bone mass can not only quickly fuse with the auxiliary support prosthesis 3, but also quickly fuse with the bone grafting hole 23. In this way, not only can the auxiliary support prosthesis 3 effectively improve the stability of the femoral upper segment hip joint prosthesis 100 after implantation, but also the load-bearing support prosthesis 2 can improve the stability of the femoral upper segment hip joint prosthesis 100 after implantation. In addition, better fusion of the load-bearing support prosthesis 2 with the bone mass can also improve the support strength of the load-bearing support prosthesis 2, reduce the stress shielding of the load-bearing support prosthesis 2 part, and thus can more effectively reduce bone mass loss.

[0038] In the preferred embodiment as Figure 4 shown, the bone grafting hole 23 may include two bone grafting hole segments 231 symmetrically arranged on the solid prosthesis part 21, and the two bone grafting hole segments 231 gradually narrow in the direction towards each other until they communicate with each other. Through this setting, the bone grafting hole segment 231 can be formed into a structure with an approximately thick outer and thin inner cross-section. In this way, the three-dimensional porous structure in the thicker cross-section bone grafting hole segment 231 can enable the bone mass and soft tissues to grow in quickly, thereby effectively improving the fusion efficiency. And the communication between the two bone grafting hole segments 231 on both sides can also effectively connect the bone masses on both sides, thereby improving the fusion strength after bone ingrowth.

[0039] Preferably, as Figure 4As shown, the bone grafting hole section 231 may include a second groove 232 formed on the surface of the solid prosthesis part 21, a straight hole section 233 whose axis is perpendicular to the second groove 232 and is connected to the second groove 232, and a tapered hole section 234 coaxially connected to the straight hole section 233. Among them, a three-dimensional porous structure can be formed inside the second groove 232, the straight hole section 233, and the tapered hole section 234. Preferably, the depth range of the second groove 232 can be 1 mm to 2 mm, the thickness of the three-dimensional porous structure formed inside the second groove 232 can be 1 mm to 2 mm, and the aperture range of the straight hole section 233 is 2 mm to 5 mm.

[0040] In a preferred embodiment, the porosity range of the three-dimensional porous structure can be 20% to 60%, and the aperture range of the three-dimensional porous structure can be 40 μm to 100 μm. It should be noted that the cross-section of each pore formed by the wire diameter is not a regular circle, and its cross-sectional shape can be various shapes. In view of this, the "diameter" of each pore mentioned here should be understood as the diameter of the circle when the cross-section of each pore is equivalent to a circle. Since the diameter of the cross-section equivalent to a circle is calculated according to the actual area of the cross-section, the value of the obtained diameter is an accurate value. By connecting the pores formed by the interlaced connection of the wire diameters to each other, and making the diameters of the pores inconsistent, and specifically setting the range of the diameter and porosity of the pores of the three-dimensional porous structure, the structure of the three-dimensional porous structure layer is closer to the trabecular bone structure of the human body. Preferably, the porosity range of the top surface of the auxiliary support prosthesis 3 can be greater than the porosity range of the side surface. The three-dimensional porous structure with a higher porosity can well induce bone ingrowth, so that the human bone mass can quickly and naturally grow into the pores of the three-dimensional porous structure. The aperture of the top surface of the auxiliary support prosthesis 3 can be smaller than the aperture of the side surface. The three-dimensional porous structure with a smaller aperture can well induce bone creeping. In this way, the ingrowth and creeping of bone mass are effectively promoted, which is beneficial to the rapid fusion and fixation of the upper femoral hip joint prosthesis 100 with the human bone mass after surgery. Therefore, the postoperative recovery effect of the patient can be more effectively improved.

[0041] In a preferred embodiment, the three-dimensional porous structure of the auxiliary support prosthesis 3 can be processed by laser cladding technology. Laser cladding technology refers to a process method in which a selected coating material is placed on the surface of the load-bearing support prosthesis 2, and is irradiated by a laser to melt it simultaneously with a thin layer on the surface of the load-bearing support prosthesis 2, and then rapidly solidified to form a surface coating with an extremely low dilution degree and metallurgical bonding with the material of the load-bearing support prosthesis 2, that is, the auxiliary support prosthesis 3 formed on the surface of the load-bearing support prosthesis 2. On the one hand, the auxiliary support prosthesis 3 processed by this method can effectively ensure the self-strength of the load-bearing support prosthesis 2, thereby effectively ensuring the stability of the upper femoral hip joint prosthesis 100 of the embodiment of the present invention after being implanted into the human body. On the other hand, the types of materials that can be selected for the auxiliary support prosthesis 3 are more diverse, so it can be more matched with the affected part of the human body, improving the applicability of the upper femoral hip joint prosthesis 100 of the embodiment of the present invention.

[0042] Preferably, the material of the three-dimensional porous structure can be titanium alloy, pure titanium or tantalum metal, etc. Preferably, the three-dimensional porous structure is made of titanium alloy material, preferably made of Ti6Al4V.

[0043] In the preferred embodiment as Figure 3 shown, the load-bearing support prosthesis 2 may further include a plurality of first rib structures 24 connecting the solid prosthesis part 21 and the first suture holes 22, and second rib structures 25 connecting adjacent first suture holes 22 to improve the connection strength between the solid prosthesis part 21 and the first suture holes 22. Preferably, the thickness range of the first rib structures 24 and the second rib structures 25 can be 2 mm to 5 mm. Also preferably, the thicknesses of the first rib structures 24 and the second rib structures 25 can be the same or different. Also preferably, the thickness of the first rib structures 24 can gradually increase along the direction close to the top of the auxiliary support prosthesis 3, so as to effectively ensure the strength of each first suture hole 22.

[0044] Preferably, the wall thickness range of the first suture holes 22 is 1 mm to 2 mm to improve the strength when suturing through the first suture holes 22 with a suture.

[0045] Returning to Figure 1 , preferably, the load-bearing support prosthesis 2 may further include a plurality of second suture holes 26 formed inside the solid prosthesis part 21 and close to the lesser trochanter side of the human femoral neck, and the axes of the second suture holes 26 can be parallel to the axes of the first suture holes 22. Among them, the inner surfaces of the first suture holes 22 and / or the second suture holes 26 are configured as smooth surfaces to facilitate the suture to be stronger and not easily worn when fixing soft tissues. Preferably, the edges of the first suture holes 22 are configured as smooth surfaces.

[0046] Preferably, the first suture hole 22 and the second suture hole 26 can be configured as circular holes with a diameter ranging from 2 mm to 6 mm, and their specific distribution positions can correspond to the positions of the two trochanters at the lower part of the femoral neck of the human body. Further preferably, the arrangement of the first suture hole 22 and the second suture hole 26 can match the physiological curvature of the corresponding greater trochanter side and lesser trochanter side, so that the above-mentioned hip joint prosthesis 100 of the upper femoral segment can be more conducive to surgical operation, and thus facilitate its suture and postoperative bone integration.

[0047] Preferably, the number of the first suture holes 22 can be set to 4, and the number of the second suture holes 26 can be set to 3. Among them, setting the number of the first suture holes 22 to 4 can avoid the problem that the wall thickness at the bottom of the auxiliary support prosthesis 3 is too thin and reduces its own structural strength; while setting the number of the second suture holes 26 to 3 can, compared with the prior art, improve the suture strength on the lesser trochanter side, thereby effectively improving the stability of the hip joint prosthesis 100 of the upper femoral segment in the embodiment of the present invention after implantation.

[0048] The present invention also proposes a hip joint prosthesis, which includes the above-mentioned hip joint prosthesis 100 of the upper femoral segment and a hip joint prosthesis of the lower femoral segment connected to the hip joint prosthesis 100 of the upper femoral segment. Among them, the hip joint prosthesis of the lower femoral segment can be connected to the hip joint prosthesis 100 of the upper femoral segment through a dovetail groove structure, so that the hip joint prosthesis of the lower femoral segment can be selected in any specification of the prior art, and thus the application range of the hip joint prosthesis in the embodiment of the present invention can be wider. Of course, as can be seen from the above, the hip joint prosthesis including the above-mentioned hip joint prosthesis 100 of the upper femoral segment can have a better stable effect after implantation.

[0049] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present invention belongs.

[0050] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the specification of the present invention. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hip prosthesis for the upper femoral segment, characterized in that, Comprising: A prosthesis body, the prosthesis body includes a load-bearing support prosthesis near the lesser trochanter side of the human femoral neck and an auxiliary support prosthesis connected to the load-bearing support prosthesis and near the greater trochanter side of the human femoral neck. The load-bearing support prosthesis includes a solid prosthesis part and a plurality of first suture holes connected to the solid prosthesis part and located inside the auxiliary support prosthesis. Among them, the plurality of first suture holes are near the greater trochanter side of the human femoral neck. The load-bearing support prosthesis is constructed as a solid structure, and the auxiliary support prosthesis is constructed as a three-dimensional porous structure; Among them, the load-bearing support prosthesis further includes: a bone grafting hole penetrating the solid prosthesis part and having an axis parallel to the first suture hole, and the inside of the bone grafting hole is filled with a three-dimensional porous structure; the bone grafting hole includes two bone grafting hole segments symmetrically arranged on the solid prosthesis part, and the two bone grafting hole segments gradually narrow in the direction towards each other until they communicate with each other; the bone grafting hole segment includes a second groove formed on the surface of the solid prosthesis part, a straight hole segment with an axis perpendicular to the second groove and connected to the second groove, and a tapered hole segment coaxially connected to the straight hole segment. The second groove, the straight hole segment, and the tapered hole segment are all formed with a three-dimensional porous structure inside; The longitudinal section of the auxiliary support prosthesis is constructed as an inverted triangle structure. The inverted triangle structure includes a top edge formed at the top of the auxiliary support prosthesis, a side edge connected to the top edge and formed on the side of the auxiliary support prosthesis near the greater trochanter side, and a hypotenuse connecting the top edge and the side edge. Among them, the length range of the top edge is 10 mm to 20 mm, and the length range of the side edge is 20 mm to 80 mm.

2. The hip prosthesis for the upper femoral segment according to claim 1, characterized in that, The auxiliary support prosthesis further includes: a chute formed on the side of the auxiliary support prosthesis near the greater trochanter side. The chute forms two chute wings on the side of the auxiliary support prosthesis. The first suture hole penetrates through the two chute wings and forms a first groove in the chute; and at least one cross beam transversely connecting the two chute wings; among them, the chute and / or the cross beam are composed of the three-dimensional porous structure.

3. The hip prosthesis for the upper femoral segment according to claim 1 or 2, characterized in that, The porosity range of the three-dimensional porous structure is 20% to 60%, and the pore diameter range of the three-dimensional porous structure is 40 μm to 100 μm.

4. The hip prosthesis for the upper femoral segment according to claim 1 or 2, characterized in that, The three-dimensional porous structure of the auxiliary support prosthesis is processed by laser cladding technology.

5. The hip prosthesis for the upper femoral segment according to claim 1 or 2, characterized in that, The load-bearing support prosthesis further includes a plurality of first rib structures connecting the solid prosthesis part and the first suture hole, and a second rib structure connecting adjacent first suture holes.

6. The hip prosthesis for the upper femoral segment according to claim 1 or 2, characterized in that, The wall thickness range of the first suture hole is 1 mm to 2 mm.

7. The hip prosthesis for the upper femoral segment according to claim 1 or 2, characterized in that, The load-bearing support prosthesis further includes a plurality of second suture holes formed inside the solid prosthesis part and near the lesser trochanter side of the human femoral neck. The axis of the second suture hole is parallel to the axis of the first suture hole. Among them, the inner surface of the first suture hole and / or the second suture hole is constructed as a smooth surface.

8. The hip prosthesis for the upper femoral segment according to claim 7, characterized in that, The number of the first suture holes is set to 4, and the number of the second suture holes is set to 3.

9. A hip prosthesis, characterized in that, Comprising a proximal femoral hip joint prosthesis according to any one of claims 1 to 8 and a distal femoral hip joint prosthesis connected to the proximal femoral hip joint prosthesis.

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