CN209827109U - Slope type trabecular bone metal acetabulum reconstruction prosthesis - Google Patents
Slope type trabecular bone metal acetabulum reconstruction prosthesis Download PDFInfo
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- CN209827109U CN209827109U CN201920281418.2U CN201920281418U CN209827109U CN 209827109 U CN209827109 U CN 209827109U CN 201920281418 U CN201920281418 U CN 201920281418U CN 209827109 U CN209827109 U CN 209827109U
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Abstract
The utility model provides a slope type trabecula bone metal acetabular bone is rebuild false body, the false body is slope type's metal construction, the false body bone trabecula structure has, the false body has the hole on the surface, just be provided with the notch on the side of false body. The utility model provides a slope type trabecula bone metal acetabular bone is rebuild the prosthesis and is applicable to the defective packing of acetabular bone edge and biological reconstruction, and slope type trabecula bone metal acetabular bone is rebuild the prosthesis and has good porosity and trabecular bone structure, is favorable to going into of bone tissue's growth on every side, makes the prosthesis integrate well with bone tissue on every side, is favorable to carrying out fine biological reconstruction to acetabular bone edge defect. The design of incisional marks especially not only plays a role of facilitating the connection of the mortar cup screw, but also can increase the contact area of the prosthesis and the bone cement, further increases the initial stability and does not need bone grafting.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a slope type bone trabecula metal acetabular bone is rebuild false body.
Background
According to the data calculation of the artificial joint registration evaluation center of Beijing ponderositan hospital, the operation amount of the hip joint revision year in China is increased by 103 percent in nearly 5 years. In hip revision surgery, acetabular bone defects are very common, so biological reconstruction of severe acetabular bone defects is a key and technical difficulty for successful surgery. A great deal of previous research proves that the bioremediation rate can be obviously reduced by adopting the trabecular bone metal prosthesis for biological reconstruction.
At present, the existing acetabulum reconstruction prosthesis which can be used for filling the defect of the edge bone of the acetabulum in the market has the problems of unreasonable design of a fixing screw hole, lack of a temporary fixing hole, need of bone grafting and the like.
SUMMERY OF THE UTILITY MODEL
Therefore, an object of the present invention is to provide a slope-type trabecular bone metal acetabulum reconstruction prosthesis for biological reconstruction of acetabular edge bone defects, so as to solve the problems of unreasonable design, lack of temporary fixation holes, bone grafting requirement, etc. of the existing prosthesis fixation screw holes.
The utility model provides a slope type trabecula bone metal acetabular bone is rebuild false body, the false body is slope type's metal construction, the false body bone trabecula structure has, the false body has the hole on the surface, just be provided with the notch on the side of false body.
The utility model provides a slope type trabecula bone metal acetabular bone is rebuild the prosthesis and is applicable to the defective packing of acetabular bone edge and biological reconstruction, and slope type trabecula bone metal acetabular bone is rebuild the prosthesis and has good porosity and trabecular bone structure, is favorable to going into of bone tissue's growth on every side, makes the prosthesis integrate well with bone tissue on every side, is favorable to carrying out fine biological reconstruction to acetabular bone edge defect. The design of incisional marks especially not only plays a role of facilitating the connection of the mortar cup screw, but also can increase the contact area of the prosthesis and the bone cement, further increases the initial stability and does not need bone grafting.
Further, the prosthesis is made of medical titanium alloy, medical cobalt alloy, medical tantalum alloy, medical magnesium alloy, medical stainless steel, medical niobium alloy or medical zirconium alloy.
Furthermore, the inner side and the outer side of the prosthesis are round surfaces, the outer diameter is 40mm-70mm, the inner diameter is 40mm-70mm, and the thickness is 1mm-30 mm.
Further, the porosity of the pores on the surface of the prosthesis is 30% -90%, and the pore size is 50-1000 um.
Further, the friction coefficient between the surface of the prosthesis and the cancellous bone is 0.1-0.3.
Further, the elastic modulus of the prosthesis is 0.1Gpa to 10 Gpa.
Further, the prosthesis is provided with 1-4 temporary fixing holes for the kirschner wires.
Further, the prosthesis has 2-6 cross-directionally oriented screw holes.
Further, the notches comprise 2-4 large notches, and the diameter of each large notch is 0.5mm-20 mm.
Further, the notches comprise 2-6 small notches, and the diameter of each small notch is 0.1mm-10 mm.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a slope-shaped trabecular bone metal acetabular reconstruction prosthesis according to an embodiment of the present invention;
fig. 2 is a front view of a slope-shaped trabecular metal acetabular reconstruction prosthesis according to an embodiment of the present invention.
In the drawings are labeled:
1 fixing hole
2 screw hole
3 cutting mark
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The embodiment of the utility model provides a slope type trabecular bone metal acetabular bone is rebuild false body, as shown in fig. 1 and fig. 2, the false body is slope type's metal construction, the false body bone trabecular bone structure has, this kind of structure is favorable to the regeneration of bone, can realize that the false body is in the same place with the fine integration of bone, the false body has the hole on the surface, just be provided with the notch on the side of false body. Optionally, the prosthesis is made of a medical titanium alloy, a medical cobalt alloy, a medical tantalum alloy, a medical magnesium alloy, a medical stainless steel, a medical niobium alloy or a medical zirconium alloy, and can be processed and manufactured by a metal 3D printing technology, a chemical vapor deposition technology and a physical vapor deposition technology; the inner side surface and the outer side surface of the prosthesis are round surfaces, the outer diameter is 40mm-70mm, the inner diameter is 40mm-70mm, the thickness is 1mm-30mm, the porosity of pores on the surface of the prosthesis is 30% -90%, the pore diameter is 50um-1000um, the friction coefficient between the surface of the prosthesis and cancellous bone is 0.1-0.3, and the elastic modulus of the prosthesis is 0.1Gpa-10 Gpa. Within the above size range, one skilled in the art can adapt different models of cups as needed to reconstruct bone defects of different sizes. The utility model provides a slope type trabecula bone metal acetabular bone is rebuild the prosthesis and is applicable to the defective packing of acetabular bone edge and biological reconstruction, and slope type trabecula bone metal acetabular bone is rebuild the prosthesis and has good porosity and trabecular bone structure, is favorable to going into of bone tissue's growth on every side, makes the prosthesis integrate well with bone tissue on every side, is favorable to carrying out fine biological reconstruction to acetabular bone edge defect. The design of incisional marks especially not only plays a role of facilitating the connection of the mortar cup screw, but also can increase the contact area of the prosthesis and the bone cement, further increases the initial stability and does not need bone grafting.
In one aspect of the embodiment of the present invention, the prosthesis has 1-4 temporary fixing holes 1 for kirschner wires, and the kirschner wires can be driven into the fixing holes during the operation, thereby achieving good temporary fixing effect.
In one aspect of the embodiments of the present invention, the prosthesis has 2-6 interlocking direction screw holes 2 thereon, which may allow for the implantation of interlocking screws, further increasing the mechanical fixation and initial stability of the prosthesis.
In one aspect of an embodiment of the present invention, the prosthesis has 2-4 large notches thereon, the large notches having a diameter of 0.5mm-20 mm. The large notch may allow passage of the cup screw without causing blockage to the cup screw.
In one aspect of an embodiment of the present invention, the prosthesis has 2-6 small notches thereon, the small notches having a diameter of 0.1mm-10 mm. The large incisional marks can increase the contact area of bone cement, further increase the initial stability of the prosthesis and avoid bone grafting.
In a specific embodiment of the present invention, as shown in fig. 1, the slope-shaped trabecular bone metal acetabular reconstruction prosthesis of this embodiment is prepared by using a metal titanium alloy as a raw material and using a metal 3D printing technique, wherein the inner diameter of the prosthesis is 52mm, the outer diameter is 50mm, the thickness is 10mm, the porosity is 80%, the pore diameter is 600-800 μm, the friction coefficient with cancellous bone is 1.1, and the elastic modulus is 5 GPa.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A slope-type trabecular bone metal acetabulum reconstruction prosthesis is characterized in that the prosthesis is a slope-type metal structure, the prosthesis is provided with a trabecular bone structure, pores are formed in the surface of the prosthesis, and notches are formed in the side face of the prosthesis.
2. The bone trabecular metal acetabular reconstruction prosthesis according to claim 1, wherein the prosthesis is made of a medical titanium alloy, a medical cobalt alloy, a medical tantalum alloy, a medical magnesium alloy, a medical stainless steel, a medical niobium alloy, or a medical zirconium alloy.
3. The prosthesis of claim 1, wherein the inner and outer lateral surfaces of the prosthesis are circular surfaces, the outer diameter is 40mm to 70mm, the inner diameter is 40mm to 70mm, and the thickness is 1mm to 30 mm.
4. The bone trabecular metal acetabular reconstruction prosthesis according to claim 1, wherein the porosity of the pores on the surface of the prosthesis is between 30% and 90% and the pore size is between 50um and 1000 um.
5. The beveled trabecular metal acetabular reconstruction prosthesis of claim 1, wherein the coefficient of friction between the surface of the prosthesis and cancellous bone is between 0.1 and 0.3.
6. The prosthetic of claim 1, wherein the modulus of elasticity of the prosthetic is between 0.1Gpa and 10 Gpa.
7. The prosthesis of claim 1, wherein the prosthesis has 1-4 k-wire temporary fixation holes.
8. The prosthesis of claim 1, wherein the prosthesis has 2-6 screw holes in an interlocking orientation.
9. The prosthesis of claim 1, wherein the prosthesis has 2-4 major notches, and the major notches have a diameter of 0.5mm-20 mm.
10. The prosthesis of claim 1, wherein the prosthesis has 2-6 small incisions, and the small incisions have a diameter of 0.1mm-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920281418.2U CN209827109U (en) | 2019-03-05 | 2019-03-05 | Slope type trabecular bone metal acetabulum reconstruction prosthesis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920281418.2U CN209827109U (en) | 2019-03-05 | 2019-03-05 | Slope type trabecular bone metal acetabulum reconstruction prosthesis |
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| CN209827109U true CN209827109U (en) | 2019-12-24 |
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| CN201920281418.2U Active CN209827109U (en) | 2019-03-05 | 2019-03-05 | Slope type trabecular bone metal acetabulum reconstruction prosthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111728739A (en) * | 2020-06-22 | 2020-10-02 | 北京市春立正达医疗器械股份有限公司 | Filling block for bone defect and method for manufacturing same |
-
2019
- 2019-03-05 CN CN201920281418.2U patent/CN209827109U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111728739A (en) * | 2020-06-22 | 2020-10-02 | 北京市春立正达医疗器械股份有限公司 | Filling block for bone defect and method for manufacturing same |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220825 Address after: 102200 Beijing Changping District science and Technology Park No. 10, two floor, Xingye building, Bai Fu Quan road. Patentee after: BEIJING AK MEDICAL Co.,Ltd. Address before: 100035 No. 31 East Xinjiekou street, Beijing, Xicheng District Patentee before: BEIJING JISHUITAN Hospital |
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| TR01 | Transfer of patent right |