CN214712937U - Total hip replacement prosthesis - Google Patents
Total hip replacement prosthesis Download PDFInfo
- Publication number
- CN214712937U CN214712937U CN202120017694.5U CN202120017694U CN214712937U CN 214712937 U CN214712937 U CN 214712937U CN 202120017694 U CN202120017694 U CN 202120017694U CN 214712937 U CN214712937 U CN 214712937U
- Authority
- CN
- China
- Prior art keywords
- femoral
- hip replacement
- total hip
- positioning column
- replacement prosthesis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000011541 total hip replacement Methods 0.000 title claims abstract description 21
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 40
- 239000011664 nicotinic acid Substances 0.000 claims abstract description 16
- 210000002436 femur neck Anatomy 0.000 claims abstract description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 210000001694 thigh bone Anatomy 0.000 claims description 7
- GVJHHUAWPYXKBD-UHFFFAOYSA-N (±)-α-Tocopherol Chemical compound OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 claims description 6
- 238000010146 3D printing Methods 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 210000000588 acetabulum Anatomy 0.000 claims description 4
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 3
- 229930003427 Vitamin E Natural products 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 3
- 229940046009 vitamin E Drugs 0.000 claims description 3
- 235000019165 vitamin E Nutrition 0.000 claims description 3
- 239000011709 vitamin E Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 210000000689 upper leg Anatomy 0.000 description 8
- 230000008468 bone growth Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 210000001185 bone marrow Anatomy 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004663 cell proliferation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000004394 hip joint Anatomy 0.000 description 2
- 210000000963 osteoblast Anatomy 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004821 effect on bone Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
Images
Landscapes
- Prostheses (AREA)
Abstract
The application relates to the field of artificial joint prostheses, in particular to a total hip replacement prosthesis, which comprises a femoral stem prosthesis, a femoral head arranged on the femoral stem prosthesis, an acetabular cup matched with the femoral head and an acetabular liner which is positioned in the acetabular cup and is in direct contact with the femoral head; the femoral stem prosthesis comprises a positioning column, a bionic fixed supporting seat fixedly connected to one end of the positioning column and a femoral neck fixedly connected to one side of the bionic fixed supporting seat far away from the positioning column, and the femoral head is assembled on the femoral neck; the positioning column is a porous bone trabecula structure imitating human cancellous bone. The application has the effect of better retaining the original bone of a patient so as to be convenient for revision.
Description
Technical Field
The present application relates to the field of artificial joint prostheses, and in particular, to a total hip replacement prosthesis.
Background
Total hip replacement is to replace the diseased acetabulum and femoral head by implanting artificial acetabular cup, femoral head and femoral stem prosthesis to establish a normal anatomical structure and restore hip joint function.
The femoral stem prosthesis comprises a femoral stem body and a femoral neck, wherein a femoral head is assembled on the femoral neck, corresponding sclerotin in a femoral bone marrow cavity needs to be removed firstly during operation, the femoral stem body is implanted into the femoral bone marrow cavity, and an acetabular cup is fixed in an acetabular socket through three medical screws.
In the process of movement of a patient, force is transmitted to the inner wall of a femoral medullary cavity through the femoral stem handle body, the femoral stem handle body is usually made to be long enough in order to reduce the force applied to the inner wall of the femoral medullary cavity by the femoral stem handle body and reduce the possibility of bone puncture, but through years of clinical experience, the inventor finds that the femoral stem prosthesis in the current market has less original bone preservation and causes difficulty in later revision due to the fact that the femoral stem handle body is too long.
In view of the above-mentioned related art, the inventors consider that the conventional femoral stem prosthesis has a defect of difficulty in revision.
SUMMERY OF THE UTILITY MODEL
In order to better preserve the patient's original bone for revision, the present application provides a total hip replacement prosthesis.
The application provides a total hip replacement prosthesis, adopts following technical scheme:
a total hip replacement prosthesis comprises a femoral stem prosthesis, a femoral head arranged on the femoral stem prosthesis, an acetabular cup matched with the femoral head, and an acetabular liner which is positioned in the acetabular cup and is in direct contact with the femoral head;
the femoral stem prosthesis comprises a positioning column, a bionic fixed supporting seat fixedly connected to one end of the positioning column and a femoral neck fixedly connected to one side of the bionic fixed supporting seat far away from the positioning column, and the femoral head is assembled on the femoral neck;
the positioning column is a porous bone trabecula structure imitating human cancellous bone.
By adopting the technical scheme, the bionic fixing support seat is arranged, so that the contact area between the femoral stem prosthesis and the femur is increased, and the stress can be shared with the positioning column when a patient moves, so that the force applied by the positioning column to the same point on the inner wall of a femoral medullary cavity is reduced, and the possibility of bone puncture is reduced; the positioning column is arranged in a structure imitating a porous bone trabecula of human cancellous bone, so that the femoral stem prosthesis is convenient to promote cell proliferation after being implanted into a human body, the bone-forming capability of osteoblasts is improved, the positioning column, the biological fixing column and the femur are favorable to grow into a whole, and the long-term stability is improved; meanwhile, due to the special structural design of the femoral stem prosthesis, the positioning column can achieve the same effect as the existing femoral stem body through a shorter length, original bone of a patient is better reserved, and a foundation is laid for subsequent revision.
Preferably, the bionic fixing support seat is disc-shaped, a plurality of biological fixing columns used for extending into original bone are uniformly distributed on one side of the bionic fixing support seat close to the positioning column, and the biological fixing columns are of a structure imitating a porous bone trabecula of a human cancellous bone.
By adopting the technical scheme, after the femoral stem prosthesis is implanted into a femur, the biological fixing column can extend into original bone, and the stability of the implanted femoral stem prosthesis is improved.
Preferably, the device further comprises a binding band;
processing has along the radial first through-hole that link up of self on the reference column, and processing has along the second through-hole that self thickness direction link up on the bionical fixed bolster, and the bandage passes through first through-hole and second through-hole and thighbone ligature is fixed.
Through adopting above-mentioned technical scheme, the setting of bandage, first through-hole and second through-hole can carry out the secondary to femoral stem prosthesis and fix, improves the reliability of implanting.
Preferably, the number of the first through holes is two, the number of the second through holes is three, and the three second through holes are arranged in a triangular shape.
Through adopting above-mentioned technical scheme for medical personnel can carry out the triangle through the bandage and fix femoral stem prosthesis at the in-process of threading, and stability is higher.
Preferably, the femoral stem prosthesis and the acetabular cup are both integrally formed by 3D printing.
By adopting the technical scheme, the height of the artificial hip joint can be conveniently matched with the femur and the acetabulum fossa of a patient, and the success rate of the operation is improved.
Preferably, the acetabular cup comprises an inner shell, an outer shell, and a plurality of projections disposed on the outer shell for simulating titanium pegs.
Through adopting above-mentioned technical scheme, replace traditional titanium nail through setting up the arch for the acetabular cup can realize fixing under the circumstances of sclausura, greatly reduced because the bone dissolving risk that the abrasive dust flowed out and caused in the downthehole, improved the security of clinical use.
Preferably, the inner shell is of a solid structure, and the outer shell is of a porous bone trabecula structure imitating human cancellous bone.
By adopting the technical scheme, the inner shell has higher strength and mainly plays a supporting role; the arrangement of the outer shell facilitates bone ingrowth, so that the acetabular cup and the acetabular socket grow into a whole, and the long-term stability after operation is improved.
Preferably, the number of the protrusions is three.
Through adopting above-mentioned technical scheme to carry out firm fixed to the acetabular cup.
Preferably, the acetabular liner is processed from ultra-high molecular weight polyethylene blended with vitamin E.
By adopting the technical scheme, the anti-dislocation wear-resistant rubber belt has higher anti-oxidation stability and wear resistance, can effectively reduce dislocation risk and prolongs the service life.
Preferably, the femoral head is machined from a ceramic composite material.
By adopting the technical scheme, the femoral head has better mechanical property and low breakage rate, and can greatly prolong the service life of the femoral head.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the special structural design of the femoral stem prosthesis, the positioning column can achieve the same effect as the existing femoral stem body through a shorter length, so that the original bone of a patient is better reserved, and a foundation is laid for subsequent revision;
2. the femoral stem prosthesis and the acetabular cup which are processed by 3D printing can be matched with the femur and the acetabular fossa of a patient in height, so that the success rate of the operation is greatly improved;
3. the stability and the firmness of the implanted prosthesis are greatly improved by a double fixation mode of bone growth and binding;
4. replace traditional titanium nail through setting up the arch for the acetabular cup can realize fixing under the circumstances of sclausura, greatly reduced because the bone dissolving risk that the abrasive dust flowed out and caused in the downthehole, improved the security of clinical use.
Drawings
FIG. 1 is a schematic overall structural view of a total hip replacement prosthesis according to an embodiment of the present application;
FIG. 2 is a schematic diagram showing a specific structure of a femoral stem prosthesis;
fig. 3 is a schematic diagram showing a specific structure of the acetabular cup.
Description of reference numerals: 1. a femoral stem prosthesis; 11. a positioning column; 12. bionic fixing support seats; 13. a femoral neck; 14. biological fixation columns; 15. a first through hole; 16. a second through hole; 2. the femoral head; 3. an acetabular cup; 31. an inner shell; 32. an outer shell; 33. a protrusion; 4. an acetabular liner; 5. and (4) binding the bands.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a total hip replacement prosthesis. Referring to fig. 1, the total hip replacement prosthesis comprises a femoral stem prosthesis 1, a femoral head 2 mounted on the femoral stem prosthesis 1, an acetabular cup 3 matched with the femoral head 2, an acetabular liner 4 located in the acetabular cup 3 and in direct contact with the femoral head 2, and a bandage 5; wherein, femoral stem false body 1 and acetabular cup 3 all form through the processing of 3D printing technology integration, and with patient's thighbone and acetabular fossa height matching, improved the success rate of operation and the recovery speed of postoperative greatly.
Referring to fig. 2, the femoral stem prosthesis 1 includes a positioning column 11, a bionic fixed support seat 12 fixedly connected to one end of the positioning column 11, and a femoral neck 13 fixedly connected to one side of the bionic fixed support seat 12 far from the positioning column 11; the positioning column 11 is mainly used for extending into a femoral bone marrow cavity to play a role in bearing force; the bionic fixing and supporting seat 12 is disc-shaped and is mainly used for increasing the contact area between the femoral stem prosthesis 1 and the femur so as to distribute stress and reduce the possibility of bone puncture; a plurality of biological fixing columns 14 are uniformly distributed on one side, close to the positioning columns 11, of the bionic fixing support seat 12, and after the femoral stem prosthesis 1 is implanted into a femur, the biological fixing columns 14 can extend into original bone to improve the stability of the implanted femoral stem prosthesis 1.
The positioning column 11 and the biological fixing column 14 are formed by mixing and printing titanium powder and tantalum powder, and the two materials are mixed, so that the positioning column 11 and the biological fixing column 14 have good corrosion resistance and biocompatibility, can provide good initial stability for bone growth, and are an excellent biological fixing interface. The structure is convenient to promote cell proliferation, improves the bone-forming capacity of osteoblasts, has a good promotion effect on bone growth, can enable the positioning column 11 and the biological fixing column 14 to grow into a whole with thighbone, improves long-term stability, effectively solves the problem that the long-term stability of the existing biological fixing bone growth interface on the market is not good, and is an innovation in the technical field of 3D printing.
Referring to fig. 2, due to the special structural design of the femoral stem prosthesis 1, the positioning column 11 can achieve the same effect as the current femoral stem body through a shorter length, and original bone of a patient is better reserved so as to lay a foundation for subsequent revision.
Referring to fig. 1 and 2, two first through holes 15 penetrating along the radial direction of the positioning column 11 are processed on the positioning column 11, and the two first through holes 15 are arranged side by side along the length direction of the positioning column 11; processing has along three second through-hole 16 that self thickness direction link up on bionical fixed support seat 12, is triangle-shaped between the three second through-hole 16 and arranges, during the operation, need punch at the position that patient's thighbone corresponds two first through-holes 15, then passes hole on the thighbone, first through-hole 15 and second through-hole 16 and thighbone through bandage 5 and ligature, realizes that the secondary is fixed.
The arrangement of the three second through holes 16 is triangular, so that medical personnel can perform triangular fixation on the femoral stem prosthesis 1 through the bandage 5 in the threading process, and the stability is higher.
Referring to fig. 1, the femoral head 2 is fitted to the femoral neck 13 by means of a taper fit. More specifically, the femoral head 2 is processed from a ceramic composite material, which not only has better mechanical properties, but also has a very low breakage rate, and can greatly improve the service life of the femoral head 2.
The acetabulum liner 4 is processed by ultra-high molecular weight polyethylene mixed with vitamin E, has high oxidation resistance stability and wear resistance, can effectively reduce dislocation risk, and prolongs the service life.
Referring to fig. 3, the acetabular cup 3 includes an inner shell 31, an outer shell 32, and three protrusions 33 for simulating titanium nails, which are disposed on the outer shell 32, the protrusions 33 are of a porous bone trabecular structure imitating human cancellous bone, and the acetabular liner 4 is mounted in the acetabular cup 3 and closely attached to the inner wall of the inner shell 31. More specifically, the inner shell 31 is a solid structure processed from titanium alloy, and is mainly used for ensuring the structural strength of the acetabular cup 3; the outer shell 32 is a porous bone trabecular structure imitating human cancellous bone and formed by mixing and printing titanium powder and tantalum powder so as to facilitate bone ingrowth; when the acetabular cup is implanted, the bulge 33 is embedded into cancellous bone in a press fit mode, and fixation of the acetabular cup 3 is achieved.
The femoral stem prosthesis 1 and the acetabular cup 3 which are processed by 3D printing in the application can be highly matched with the femur and the acetabular fossa of a patient, so that the success rate of the operation is greatly improved; the stability and the firmness of the implanted prosthesis are greatly improved by a double fixation mode of bone growth and binding; through the special structural design of the femoral stem prosthesis 1, the positioning column 11 can achieve the same effect as the existing femoral stem body only through a short length, so that the original bone of a patient is better reserved for renovation; replace traditional titanium nail through setting up arch 33 for fixed can be realized to acetabular cup 3 under the circumstances of sclausura, greatly reduced because the bone dissolving risk that the abrasive dust flowed out and caused from downthehole, improved the security of clinical use.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A total hip replacement prosthesis is characterized by comprising a femoral stem prosthesis (1), a femoral head (2) arranged on the femoral stem prosthesis (1), an acetabular cup (3) matched with the femoral head (2), and an acetabular liner (4) which is positioned in the acetabular cup (3) and is in direct contact with the femoral head (2);
the femoral stem prosthesis (1) comprises a positioning column (11), a bionic fixing support seat (12) fixedly connected to one end of the positioning column (11), and a femoral neck (13) fixedly connected to one side, away from the positioning column (11), of the bionic fixing support seat (12), wherein the femoral head (2) is assembled on the femoral neck (13);
the positioning column (11) is of a porous bone trabecula structure imitating human cancellous bone.
2. A total hip replacement prosthesis according to claim 1, wherein: the bionic fixing support seat (12) is disc-shaped, a plurality of biological fixing columns (14) used for extending into original bone are uniformly distributed on one side of the bionic fixing support seat close to the positioning column (11), and the biological fixing columns (14) are of a structure imitating a porous bone trabecula of a human cancellous bone.
3. A total hip replacement prosthesis according to claim 1, wherein: also comprises a binding band (5);
processing has along the radial first through-hole (15) that link up of self on reference column (11), and processing has along the second through-hole (16) that self thickness direction link up on bionical fixed bolster (12), and bandage (5) are fixed with the thighbone ligature through first through-hole (15) and second through-hole (16).
4. A total hip replacement prosthesis according to claim 3, wherein: the number of the first through holes (15) is two, the number of the second through holes (16) is three, and the three second through holes (16) are arranged in a triangular mode.
5. A total hip replacement prosthesis according to claim 1, wherein: the femoral stem prosthesis (1) and the acetabular cup (3) are integrally formed by 3D printing.
6. A total hip replacement prosthesis according to claim 5, in which: the acetabular cup (3) comprises an inner shell (31), an outer shell (32) and a plurality of protrusions (33) which are arranged on the outer shell (32) and used for simulating titanium nails.
7. A total hip replacement prosthesis according to claim 6, wherein: the inner shell (31) is of a solid structure, and the outer shell (32) is of a porous bone trabecula structure imitating human cancellous bone.
8. A total hip replacement prosthesis according to claim 6, wherein: the number of the protrusions (33) is three.
9. A total hip replacement prosthesis according to claim 1, wherein: the acetabulum liner (4) is processed by ultra-high molecular weight polyethylene mixed with vitamin E.
10. A total hip replacement prosthesis according to claim 1, wherein: the femoral head (2) is processed from a ceramic composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120017694.5U CN214712937U (en) | 2021-01-05 | 2021-01-05 | Total hip replacement prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120017694.5U CN214712937U (en) | 2021-01-05 | 2021-01-05 | Total hip replacement prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214712937U true CN214712937U (en) | 2021-11-16 |
Family
ID=78637890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120017694.5U Active CN214712937U (en) | 2021-01-05 | 2021-01-05 | Total hip replacement prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214712937U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112618113A (en) * | 2021-01-05 | 2021-04-09 | 北京力达康科技有限公司 | Total hip replacement prosthesis |
| CN117243731A (en) * | 2023-11-16 | 2023-12-19 | 北京爱康宜诚医疗器材有限公司 | Femoral prosthesis |
-
2021
- 2021-01-05 CN CN202120017694.5U patent/CN214712937U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112618113A (en) * | 2021-01-05 | 2021-04-09 | 北京力达康科技有限公司 | Total hip replacement prosthesis |
| CN112618113B (en) * | 2021-01-05 | 2024-11-29 | 北京力达康科技有限公司 | Total hip replacement prosthesis |
| CN117243731A (en) * | 2023-11-16 | 2023-12-19 | 北京爱康宜诚医疗器材有限公司 | Femoral prosthesis |
| CN117243731B (en) * | 2023-11-16 | 2024-03-29 | 北京爱康宜诚医疗器材有限公司 | Femoral prosthesis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11833052B2 (en) | Tissue integration design for seamless implant fixation | |
| Morscher et al. | Cementless fixation of" isoelastic" hip endoprostheses manufactured from plastic materials. | |
| US20250090332A1 (en) | Partial hip prosthesis | |
| US5658352A (en) | Hip prosthesis and its use | |
| CN209059542U (en) | A 3D printed metal trabecular surface hip prosthesis | |
| CN109481098B (en) | toe joint prosthesis | |
| WO2012003036A2 (en) | Monolithic orthopedic implant with an articular finished surface | |
| US6887278B2 (en) | Prosthetic implant having segmented flexible stem | |
| KR20130067251A (en) | Prosthesis | |
| CN214712937U (en) | Total hip replacement prosthesis | |
| CN112618113A (en) | Total hip replacement prosthesis | |
| CN213607201U (en) | Knee joint prosthesis capable of keeping personalized customization of ankle joint surface | |
| Mulier et al. | Hedrocel trabecular metal monoblock acetabular cups: mid-term results | |
| CN211658426U (en) | Hip joint prosthesis with sintered coating | |
| WO2012003037A2 (en) | Convex concave implant | |
| CN211131550U (en) | Femoral implant | |
| CN203388964U (en) | Human hip joint for bone replacement and implantation | |
| CN211131549U (en) | Femoral implant | |
| Uklejewski et al. | Prototype of minimally invasive hip resurfacing endoprosthesis—Bioengineering design and manufacturing | |
| CN209004333U (en) | Replacement prosthesis | |
| CN216535675U (en) | Biological knee joint prosthesis | |
| WO2019166021A1 (en) | Artificial joint prosthesis having biomimetic function | |
| CN110215318A (en) | A method of artificial joint prosthesis is prepared using 3D printing technique | |
| CN219480471U (en) | Porous tantalum metal femoral prosthesis | |
| CN103655006A (en) | Hip joint prosthesis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |