CN220442780U - Customization device for knee joint spacious implantation prosthesis - Google Patents
Customization device for knee joint spacious implantation prosthesis Download PDFInfo
- Publication number
- CN220442780U CN220442780U CN202320554194.4U CN202320554194U CN220442780U CN 220442780 U CN220442780 U CN 220442780U CN 202320554194 U CN202320554194 U CN 202320554194U CN 220442780 U CN220442780 U CN 220442780U
- Authority
- CN
- China
- Prior art keywords
- femoral condyle
- prosthesis
- tibia
- joint
- cavity
- 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
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 25
- 238000002513 implantation Methods 0.000 title description 4
- 210000002303 tibia Anatomy 0.000 claims abstract description 88
- 239000002639 bone cement Substances 0.000 claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 18
- 210000000689 upper leg Anatomy 0.000 claims abstract description 5
- 239000004568 cement Substances 0.000 claims description 16
- 238000011882 arthroplasty Methods 0.000 claims description 8
- 238000010146 3D printing Methods 0.000 abstract description 8
- 238000001356 surgical procedure Methods 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 15
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 15
- 238000005498 polishing Methods 0.000 description 11
- 230000005855 radiation Effects 0.000 description 10
- 238000004132 cross linking Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000004677 Nylon Substances 0.000 description 7
- 229920001778 nylon Polymers 0.000 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 description 6
- 239000004696 Poly ether ether ketone Substances 0.000 description 5
- 229910001069 Ti alloy Inorganic materials 0.000 description 5
- MTHLBYMFGWSRME-UHFFFAOYSA-N [Cr].[Co].[Mo] Chemical compound [Cr].[Co].[Mo] MTHLBYMFGWSRME-UHFFFAOYSA-N 0.000 description 5
- 239000003242 anti bacterial agent Substances 0.000 description 5
- 229940088710 antibiotic agent Drugs 0.000 description 5
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920002530 polyetherether ketone Polymers 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- 239000007769 metal material Substances 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 230000001954 sterilising effect Effects 0.000 description 4
- 229930003427 Vitamin E Natural products 0.000 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 description 3
- 229940046009 vitamin E Drugs 0.000 description 3
- 235000019165 vitamin E Nutrition 0.000 description 3
- 239000011709 vitamin E Substances 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000002591 computed tomography Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229930003231 vitamin Natural products 0.000 description 2
- 229940088594 vitamin Drugs 0.000 description 2
- 235000013343 vitamin Nutrition 0.000 description 2
- 239000011782 vitamin Substances 0.000 description 2
- 150000003722 vitamin derivatives Chemical class 0.000 description 2
- 208000003076 Osteolysis Diseases 0.000 description 1
- 208000035415 Reinfection Diseases 0.000 description 1
- 210000000588 acetabulum Anatomy 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000001804 debridement Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 208000029791 lytic metastatic bone lesion Diseases 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model relates to the technical field of medical devices, in particular to a customizing device for a knee joint open surgery prosthesis. The device comprises a femoral condyle prosthesis preparation mechanism and a tibial prosthesis preparation mechanism, wherein the femoral condyle prosthesis preparation mechanism comprises a femoral condyle lower die, a femoral condyle upper die, a femoral condyle joint surface, a femoral condyle bone cement prosthesis and a first locking component, and the tibial prosthesis preparation mechanism comprises a tibial lower die, a tibial upper die, a tibial bone cement prosthesis, a tibial joint surface and a second locking component. According to the utility model, the data of the marrow cavity of a patient are acquired, the data of the contact surface of the femur and the tibia platform are imported, and the joint surface matched with the knee joint of the patient is manufactured while the 3D printing equipment is utilized to print the die, so that the joint surface is placed in the die to be molded together during the operation of the die, the joint surface can be highly polished, the high polished surface can reduce the abrasion of the joint at the acetabular side, thereby playing a role of protecting the knee joint, and the movement is not limited after operation.
Description
Technical Field
The utility model relates to the technical field of medical devices, in particular to a customizing device for knee joint spacious surgery prosthesis.
Background
The knee joint spacious implantation is mainly used for treating pain caused by infection after primary replacement of artificial joints, symptoms of discomfort such as limited movement, require a primary operation of revision surgery. Knee prostheses may be subject to reinfection after removal. After debridement, the bone cement injected with antibiotics is pressed by a die, a bone cement prosthesis which is approximately consistent with the original prosthesis is obtained after simple coping, the intramedullary cavities of the femur and the tibia are implanted, the incision is closed to control infection, and the operation is prepared for the next knee joint repair or fusion.
The prior art is to make a general mould to provide doctors, the mould is simple but has weak functionality, a large amount of modification is needed after the prosthesis is formed to be used, the time of a patient on an operating table can be influenced, the formed prosthesis is rough and is difficult to match with the medullary cavity of the patient, the operation needs to be limited until the next operation, and the postoperative satisfaction of the patient is not high. Still other techniques are to acquire the patient's medullary cavity data using 3D printing techniques and print the custom-made mold with 3D printing equipment, which, although solving the problem of medullary cavity matching, still has the problem of limited post-operative activity and low patient operation satisfaction.
Disclosure of Invention
The utility model aims to provide a customizing device for a knee joint open surgery prosthesis, which overcomes the defects of the prior art, acquires data of a patient's marrow cavity, simultaneously imports data of a contact surface of a femur and a tibia platform, prints a die by using 3D printing equipment, and simultaneously makes a joint surface matched with the patient's knee joint, so that the joint surface is placed in the die for molding during surgery, the joint surface can be highly polished, the precision after polishing can be less than or equal to 2 microns, the high polished surface greatly reduces the abrasion of joints at the acetabulum side, thereby playing a role of protecting the knee joint, and the patient is not limited in movement after open surgery.
The technical scheme adopted for solving the technical problems is as follows:
a customized device for a knee joint arthroplasty prosthesis, comprising a femoral condyle prosthesis preparation mechanism and a tibial prosthesis preparation mechanism, wherein:
the femoral condyle prosthesis preparation mechanism comprises a femoral condyle lower die, a femoral condyle upper die, a femoral condyle joint surface, a femoral condyle bone cement prosthesis and a first locking component, wherein a femoral condyle prosthesis cavity is formed between the femoral condyle lower die and the femoral condyle upper die after the femoral condyle lower die and the femoral condyle upper die are connected through the first locking component, the femoral condyle joint surface is arranged in the femoral condyle prosthesis cavity, the femoral condyle joint surface comprises a femoral condyle joint contact surface and a first fixing column, the femoral condyle joint contact surface is matched with the end surface shape of a femoral condyle joint, the femoral condyle joint contact surface is polished, one end of the first fixing column is fixed on the femoral condyle joint contact surface, bone cement is arranged in the femoral condyle prosthesis cavity, and the bone cement is solidified to form a femoral condyle bone cement prosthesis which is connected with the first fixing column and the femoral condyle joint contact surface into a whole;
the tibia prosthesis preparation mechanism comprises a tibia lower die, a tibia upper die, a tibia bone cement prosthesis, a tibia joint surface and a second locking component, wherein a tibia prosthesis cavity is formed between the tibia lower die and the tibia upper die after the tibia lower die and the tibia upper die are connected through the second locking component, the tibia bone cement prosthesis is arranged in the tibia prosthesis cavity, the tibia joint surface comprises a tibia joint contact surface and a second fixing column, the tibia joint contact surface is matched with the end surface of the tibia joint in shape, the tibia joint contact surface is polished, one end of the second fixing column is fixed on the tibia joint contact surface, bone cement is embedded into a tibia prosthesis cavity, and the bone cement is solidified to form a tibia bone cement prosthesis which is connected with the second fixing column and the tibia joint contact surface into a whole.
Further, a first mounting hole is formed in the femoral condyle lower die along one diagonal line, a first positioning hole is formed in the femoral condyle lower die along the other diagonal line, a second mounting hole is formed in the femoral condyle upper die along one diagonal line, a second positioning hole is formed in the femoral condyle upper die along the other diagonal line, a first locking component is mounted in the first mounting hole and the second mounting hole which are corresponding in position, and a first positioning pin is mounted in the first positioning hole and the second positioning hole which are corresponding in position.
Further, a lower femoral condyle prosthesis cavity is formed in the upper end face of the femoral condyle lower die, an upper femoral condyle prosthesis cavity is formed in the lower end face of the femoral condyle upper die, the lower femoral condyle prosthesis cavity and the upper femoral condyle prosthesis cavity form a femoral condyle prosthesis cavity, and the shape of the femoral condyle articular surface and the shape of the femoral condyle cement prosthesis after being combined is matched with the shape of the femoral condyle prosthesis cavity.
Further, the first locking component comprises a femoral condyle bolt post and a femoral condyle nut, and the femoral condyle bolt post passes through the first mounting hole and the second mounting hole and is connected with the two femoral condyle nuts in a threaded manner.
Further, the second locking assembly includes a mounting post and a tibial nut threaded onto the mounting post.
Further, mounting columns are arranged at two ends of one diagonal line of the tibia lower die, and second positioning pins are arranged at two ends of the other diagonal line; the tibia lower die is provided with third mounting holes along two ends of one diagonal line, and third positioning holes along two ends of the other diagonal line; the mounting post passes through the third mounting hole and then is connected with the two tibia nuts, and the second locating pin passes through the third locating hole.
Further, the upper end face of the tibia lower die is provided with a lower tibia prosthesis cavity, the lower end face of the tibia upper die is provided with an upper tibia prosthesis cavity, the lower tibia prosthesis cavity and the upper tibia prosthesis cavity form a tibia prosthesis cavity, and the shape of the tibia bone cement prosthesis and the shape of the tibia joint surface after being combined is matched with the shape of the tibia prosthesis cavity.
Further, the first fixing columns and the second fixing columns are all provided with a plurality of fixing columns.
Furthermore, the upper femoral condyle die is made of metal or nylon 3D, the lower tibial condyle die is made of metal or nylon 3D, and the upper tibial condyle die is made of metal or nylon 3D.
Further, the femoral condyle articular surface can be made of titanium alloy (Ti 6Al4V, TC 4), cobalt chromium molybdenum (CoCrMo), ultra-high molecular weight polyethylene, high-dose radiation cross-linking ultra-high molecular weight polyethylene, vitamin E-type high-dose radiation cross-linking ultra-high molecular weight polyethylene, PEEK and other materials, and if the femoral condyle articular surface is made of metal materials for operation, the femoral condyle articular surface can be made into a high-polishing interface, the articular surface can be fixed in the femoral condyle cement prosthesis by the first fixing column, and the contact area between the femoral condyle cement prosthesis and the first fixing column is increased.
Further, the tibial articular surface can be made of titanium alloy (Ti 6Al4V, TC 4), cobalt chromium molybdenum (CoCrMo), ultrahigh molecular weight polyethylene, high-dose radiation crosslinking ultrahigh molecular weight polyethylene, vitamin E-type high-dose radiation crosslinking ultrahigh molecular weight polyethylene, PEEK and other materials, if the tibial articular surface is made of metal materials for operation, the tibial articular surface can be made into a high polishing interface, the second fixing column can fix the tibial articular surface in the tibial bone cement prosthesis, and the contact area between the tibial bone cement prosthesis and the second fixing column is increased.
The application method of the utility model comprises the following steps:
(1) Obtaining data of the affected part of the patient through CT scanning or other imaging equipment capable of obtaining data;
(2) Converting the data into a solid three-dimensional model, editing the obtained bone model of the patient through three-dimensional software, and drawing into a customized mold and a joint surface through editing;
(3) Inputting data into 3D printing equipment, printing a mould and a joint surface, printing and forming to obtain a pair of cavity mould and joint surface with bone cement prosthesis models, processing relevant mounting holes and relevant positioning holes of a femoral condyle lower mould and a femoral condyle upper mould, and highly polishing mounting columns, positioning columns, mounting holes and positioning holes of the femoral condyle joint and tibial lower mould and the tibial upper mould, and highly polishing and processing a tibial joint surface;
(4) Sterilizing according to the national standard sterilization method of the pharmacopoeia of the people's republic of China, GB 15981-1995;
(5) The use process of the die for the operating room after the die is manufactured is that a medical film is fully paved in the die for demoulding after a while;
(6) Opening a lower femoral condyle die and an upper femoral condyle die, firstly placing the femoral condyle articular surface, then filling bone cement with antibiotics, closing the dies, and screwing the femoral condyle nuts on the first mounting hole and the second mounting hole; the tibia operation steps are that a tibia lower die and a tibia upper die are opened, a tibia joint surface is firstly placed in the tibia upper die, then bone cement with antibiotics is filled, the dies are closed, and tibia nuts on a mounting column and a third mounting hole are screwed up;
(7) After the bone cement is solidified, the die is detached, the femoral condyle cement prosthesis and the tibial bone cement prosthesis are taken out, at the moment, the femoral condyle articular surface and the tibial articular surface are respectively fused with the femoral condyle cement prosthesis and the tibial bone cement prosthesis, and the femoral condyle cement prosthesis and the tibial bone cement prosthesis are implanted into a human body after the external shape is trimmed by a file.
According to the utility model, the data of the marrow cavity of a patient are acquired, the data of the contact surface of the femur and the tibia platform are imported, and a joint surface matched with the knee joint of the patient is manufactured while the 3D printing equipment is utilized to print the die, so that the joint surface is placed in the die to be molded together during the operation of compression molding, and the materials adopted by the joint surface can be customized according to the requirements of doctors, such as: titanium alloy (Ti 6Al4V, TC 4), cobalt chromium molybdenum (CoCrMo), ultra-high molecular weight polyethylene, high-dose radiation cross-linked ultra-high molecular weight polyethylene, vitamin E type high-dose radiation cross-linked ultra-high molecular weight polyethylene, PEEK and the like. The metal can be polished highly, the precision after polishing can be less than or equal to 2 microns, and the high polished surface can reduce the abrasion of the acetabular side joint, so that the knee joint protection function is achieved, and the patient is not limited in movement after the open implantation operation.
The beneficial effects of the utility model are as follows: compared with the prior art, the customization device for the knee joint open surgery prosthesis has the following advantages: (1) The customized mold design can perfectly fit the marrow cavity of the patient after revision surgery; (2) The customized joint surface is designed with a high polishing contact surface or is customized and manufactured by selecting various wear-resistant materials, so that the femoral condyle and the tibial plateau can be perfectly attached, the wear resistance and the friction force are small, the action limitation of a patient after operation is relieved, the soft tissue in the knee joint of the patient is protected, and the risks of osteolysis and other diseases are reduced; (3) The die is customized by the 3D printing equipment, and after patient data are acquired, processing steps can be completed quickly, so that the time for a patient to wait for an operation is reduced.
Drawings
FIG. 1 is a schematic exploded view of the structure of the femoral condyle prosthesis preparation mechanism of the present utility model;
FIG. 2 is a schematic exploded view of the structure of the tibial prosthesis preparation mechanism of the present utility model;
FIG. 3 is a schematic view of the configuration of the femoral condyle lower mold of the present utility model;
FIG. 4 is a schematic view of the configuration of the femoral epicondylar mold of the present utility model;
FIG. 5 is a schematic view of the femoral condyle articular surface of the present utility model;
FIG. 6 is a schematic view of the structure of the tibial lower mold of the present utility model;
FIG. 7 is a schematic view of the structure of the tibial upper mold of the present utility model;
fig. 8 is a schematic view of the structure of the tibial articular surface of the present utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
1-8, a customized device for a knee joint prosthesis, comprising a femoral condyle prosthesis preparation mechanism and a tibial prosthesis preparation mechanism, wherein:
the femoral condyle prosthesis preparation mechanism comprises a femoral condyle lower die 1, a femoral condyle upper die 2, a femoral condyle articular surface 7, a femoral condyle cement prosthesis 6 and a first locking component, wherein a femoral condyle prosthesis cavity is formed between the femoral condyle lower die 1 and the femoral condyle upper die after the femoral condyle lower die and the femoral condyle upper die are connected through the first locking component, the femoral condyle articular surface 7 is arranged in the femoral condyle prosthesis cavity, the femoral condyle articular surface 7 comprises a femoral condyle articular contact surface 7.1 and a first fixing post 7.2, the femoral condyle articular contact surface 7.1 is matched with the end surface shape of a femoral condyle, the femoral condyle articular contact surface 7.1 is polished, one end of the first fixing post 7.2 is fixed on the femoral condyle articular contact surface 7.1, bone cement is put into the femoral condyle prosthesis cavity, and the bone cement is solidified to form a femoral condyle cement prosthesis 6 which is connected with the first fixing post 7.2 and the femoral condyle articular contact surface 7.1 into a whole;
the tibial prosthesis preparation mechanism comprises a tibial lower die 8, a tibial upper die 9, a tibial bone cement prosthesis 11, a tibial joint surface 12 and a second locking component, wherein a tibial prosthesis cavity is formed between the tibial lower die 8 and the tibial upper die 9 after the tibial lower die 8 and the tibial upper die 9 are connected through the second locking component, the tibial bone cement prosthesis 11 is arranged in the tibial prosthesis cavity, the tibial joint surface 12 comprises a tibial joint contact surface 12.1 and a second fixing column 12.2, the tibial joint contact surface 12.1 is matched with the end surface shape of a tibial joint, the tibial joint contact surface 12.1 is polished, one end of the second fixing column 12.2 is fixed on the tibial joint contact surface 12.1, bone cement is implanted into the tibial prosthesis cavity, and the bone cement is solidified to form the tibial bone cement prosthesis 11 which is integrally connected with the second fixing column 12.2 and the tibial joint contact surface 12.1.
Further, a first mounting hole 1.1 is formed in the femoral condyle lower die 1 along one diagonal line, a first positioning hole 1.2 is formed in the femoral condyle upper die 2 along the other diagonal line, a second mounting hole 2.1 is formed in the femoral condyle upper die 2 along one diagonal line, a second positioning hole 2.2 is formed in the other diagonal line, a first locking component is mounted in the first mounting hole 1.1 and the second mounting hole 2.1 which are corresponding in position, and a first positioning pin 5 is mounted in the first positioning hole 1.2 and the second positioning hole 2.2 which are corresponding in position.
Further, the upper end face of the femoral condyle lower die 1 is provided with a lower femoral condyle prosthesis cavity 1.3, the lower end face of the femoral condyle upper die 2 is provided with an upper femoral condyle prosthesis cavity 2.3, the lower femoral condyle prosthesis cavity 1.3 and the upper femoral condyle prosthesis cavity 2.3 form a femoral condyle prosthesis cavity, and the shape of the femoral condyle articular surface 7 and the shape of the femoral condyle cement prosthesis 6 after being combined is matched with the shape of the femoral condyle prosthesis cavity.
Further, the first locking component comprises a femoral condyle bolt post 3 and a femoral condyle nut 4, and the femoral condyle bolt post 3 passes through the first mounting hole 1.1 and the second mounting hole 2.1 and is connected with the two femoral condyle nuts 4 in a threaded manner.
Further, the second locking assembly includes a mounting post 8.1 and a tibial nut 11 threadably coupled to the mounting post 8.1.
Further, the tibia lower mould 8 is provided with mounting posts 8.1 along two ends of one diagonal line, and second positioning pins 8.2 along two ends of the other diagonal line; the upper tibia mould 9 is provided with third mounting holes 9.1 along two ends of one diagonal line and third positioning holes 9.2 along two ends of the other diagonal line; the mounting post 8.1 is connected with two tibia nuts 11 after passing through the third mounting hole 9.1, and the second positioning pin 8.2 passes through the third positioning hole 9.2.
Further, a lower tibial prosthesis cavity 8.3 is arranged on the upper end face of the tibial lower die 8, an upper tibial prosthesis cavity 9.3 is arranged on the lower end face of the tibial upper die 9, the lower tibial prosthesis cavity 8.3 and the upper tibial prosthesis cavity 9.3 form a tibial prosthesis cavity, and the shape of the combined tibial bone cement prosthesis 11 and the shape of the tibial articular surface 12 are matched with the shape of the tibial prosthesis cavity.
Further, the first fixing columns 7.2 and the second fixing columns 12.2 are provided with a plurality of fixing columns.
Further, the upper femoral condyle mold 2 is made of metal or nylon 3D, the lower femoral condyle mold 1 is made of metal or nylon 3D, the lower tibial mold 8 is made of metal or nylon 3D, and the upper tibial mold 9 is made of metal or nylon 3D.
Further, the femoral condyle articular surface 7 can be made of titanium alloy (Ti 6Al4V, TC 4), cobalt chromium molybdenum (CoCrMo), ultra-high molecular weight polyethylene, high dose radiation cross-linking ultra-high molecular weight polyethylene, vitamin E type high dose radiation cross-linking ultra-high molecular weight polyethylene, PEEK and other materials, and if a metal material is selected for operation, the femoral condyle articular surface 7.1 can be made into a high polishing interface, the articular surface can be fixed in the femoral condyle cement prosthesis by the first fixing column 7.2, and the contact area between the femoral condyle cement prosthesis and the first fixing column 7.2 is increased.
Further, the tibial articular surface 12 can be made of titanium alloy (Ti 6Al4V, TC 4), cobalt chromium molybdenum (CoCrMo), ultra-high molecular weight polyethylene, high dose radiation cross-linking ultra-high molecular weight polyethylene, vitamin E type high dose radiation cross-linking ultra-high molecular weight polyethylene, PEEK, or the like, and if a metal material is selected for operation, the tibial articular surface 12.1 can be used as a high polishing interface, and the second fixing post 12.2 can fix the tibial articular surface 12 in the tibial cement prosthesis 11, so that the contact area between the tibial cement prosthesis 11 and the second fixing post 12.2 is increased.
The application method of the utility model comprises the following steps:
(1) Obtaining data of the affected part of the patient through CT scanning or other imaging equipment capable of obtaining data;
(2) Converting the data into a solid three-dimensional model, editing the obtained bone model of the patient through three-dimensional software, and drawing into a customized mold and a joint surface through editing;
(3) Inputting data into 3D printing equipment, printing a mould and a joint surface, printing and forming to obtain a pair of cavity mould and joint surface with bone cement prosthesis models, processing relevant mounting holes and relevant positioning holes of a femoral condyle lower mould 1 and a femoral condyle upper mould 2, high-polishing mounting columns 8.1, positioning columns, mounting holes and positioning holes of a femoral condyle joint and tibia lower mould 8 and a tibia upper mould 9, and high-polishing processing a tibia joint surface 12;
(4) Sterilizing according to the national standard sterilization method of the pharmacopoeia of the people's republic of China, GB 15981-1995;
(5) The use process of the die for the operating room after the die is manufactured is that a medical film is fully paved in the die for demoulding after a while;
(6) Opening the lower femoral condyle mould 1 and the upper femoral condyle mould 2, firstly placing the femoral condyle articular surface 7, then filling bone cement with antibiotics, closing the moulds, and screwing the femoral condyle nuts 4 on the first mounting hole 1.1 and the second mounting hole 2.1; the tibia operation steps are that a tibia lower die 8 and a tibia upper die 9 are opened, a tibia joint surface 12 is firstly put in, then bone cement with antibiotics is filled, the dies are closed, and tibia nuts 11 on an installation column 8.1 and a third installation hole 9.1 are screwed up;
(7) After the bone cement is solidified, the die is removed, the femoral condyle cement prosthesis and the tibial bone cement prosthesis 11 are taken out, at the moment, the femoral condyle articular surface 7 and the tibial articular surface 12 are respectively fused with the femoral condyle cement prosthesis and the tibial bone cement prosthesis 11, and the femoral condyle articular surface 7 and the tibial articular surface 12 are implanted into a human body after the appearance is trimmed by a file.
The foregoing embodiments are merely examples of the present utility model, and the scope of the present utility model includes, but is not limited to, the forms and styles of the foregoing embodiments, and any suitable changes or modifications made by those skilled in the art, which are consistent with the claims of the present utility model, shall fall within the scope of the present utility model.
Claims (8)
1. A customization device for a knee joint prosthesis, characterized in that: comprises a femoral condyle prosthesis preparation mechanism and a tibial prosthesis preparation mechanism, wherein:
the femoral condyle prosthesis preparation mechanism comprises a femoral condyle lower die, a femoral condyle upper die, a femoral condyle joint surface, a femoral condyle bone cement prosthesis and a first locking component, wherein a femoral condyle prosthesis cavity is formed between the femoral condyle lower die and the femoral condyle upper die after the femoral condyle lower die and the femoral condyle upper die are connected through the first locking component, the femoral condyle joint surface is arranged in the femoral condyle prosthesis cavity, the femoral condyle joint surface comprises a femoral condyle joint contact surface and a first fixing column, the femoral condyle joint contact surface is matched with the end surface shape of a femoral condyle joint, the femoral condyle joint contact surface is polished, one end of the first fixing column is fixed on the femoral condyle joint contact surface, bone cement is arranged in the femoral condyle prosthesis cavity, and the bone cement is solidified to form a femoral condyle bone cement prosthesis which is connected with the first fixing column and the femoral condyle joint contact surface into a whole;
the tibia prosthesis preparation mechanism comprises a tibia lower die, a tibia upper die, a tibia bone cement prosthesis, a tibia joint surface and a second locking component, wherein a tibia prosthesis cavity is formed between the tibia lower die and the tibia upper die after the tibia lower die and the tibia upper die are connected through the second locking component, the tibia bone cement prosthesis is arranged in the tibia prosthesis cavity, the tibia joint surface comprises a tibia joint contact surface and a second fixing column, the tibia joint contact surface is matched with the end surface of a tibia joint in shape, one end of the second fixing column is fixed on the tibia joint contact surface, bone cement is embedded in the tibia prosthesis cavity, and the bone cement is solidified to form the tibia bone cement prosthesis which is connected with the second fixing column and the tibia joint contact surface into a whole.
2. A customization device for knee joint arthroplasty prostheses according to claim 1, characterized in that: the femur condyle lower die is characterized in that a first mounting hole is formed in one diagonal line, a first positioning hole is formed in the other diagonal line, a second mounting hole is formed in the other diagonal line, a second positioning hole is formed in the other diagonal line, a first locking component is mounted in the first mounting hole and the second mounting hole which are corresponding in position, and a first positioning pin is mounted in the first positioning hole and the second positioning hole which are corresponding in position.
3. A customization device for knee joint arthroplasty prostheses according to claim 1, characterized in that: the upper end face of the femoral condyle lower die is provided with a lower femoral condyle prosthesis cavity, the lower end face of the femoral condyle upper die is provided with an upper femoral condyle prosthesis cavity, the lower femoral condyle prosthesis cavity and the upper femoral condyle prosthesis cavity form a femoral condyle prosthesis cavity, and the shape of the femoral condyle articular surface and the shape of the femoral condyle cement prosthesis after combination are matched with the shape of the femoral condyle prosthesis cavity.
4. A customization device for knee joint arthroplasty prostheses according to claim 2, characterized in that: the first locking component comprises a femoral condyle bolt post and a femoral condyle nut, and the femoral condyle bolt post passes through the first mounting hole and the second mounting hole and is connected with the two femoral condyle nuts in a threaded manner.
5. A customization device for knee joint arthroplasty prostheses according to claim 1, characterized in that: the second locking assembly includes a mounting post and a tibial nut threadably coupled to the mounting post.
6. A customization device for a knee joint arthroplasty prosthesis according to claim 5, characterized in that: the tibia lower die is provided with mounting columns along two ends of one diagonal line, and second positioning pins are arranged along two ends of the other diagonal line; the upper tibia mould is provided with third mounting holes along two ends of one diagonal line, and third positioning holes along two ends of the other diagonal line; the mounting post passes through the third mounting hole and then is connected with the two tibia nuts, and the second locating pin passes through the third locating hole.
7. A customization device for knee joint arthroplasty prostheses according to claim 1, characterized in that: the upper end face of the tibia lower die is provided with a lower tibia prosthesis cavity, the lower end face of the tibia upper die is provided with an upper tibia prosthesis cavity, the lower tibia prosthesis cavity and the upper tibia prosthesis cavity form a tibia prosthesis cavity, and the shape of the tibia bone cement prosthesis and the shape of the tibia joint surface after being combined are matched with the shape of the tibia prosthesis cavity.
8. A customization device for knee joint arthroplasty prostheses according to claim 1, characterized in that: the first fixing columns and the second fixing columns are all provided with a plurality of fixing columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320554194.4U CN220442780U (en) | 2023-03-21 | 2023-03-21 | Customization device for knee joint spacious implantation prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320554194.4U CN220442780U (en) | 2023-03-21 | 2023-03-21 | Customization device for knee joint spacious implantation prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220442780U true CN220442780U (en) | 2024-02-06 |
Family
ID=89728975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320554194.4U Active CN220442780U (en) | 2023-03-21 | 2023-03-21 | Customization device for knee joint spacious implantation prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220442780U (en) |
-
2023
- 2023-03-21 CN CN202320554194.4U patent/CN220442780U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8083802B2 (en) | Prosthetic bearing with encapsulated reinforcement | |
| CN109501091B (en) | 3D printing-based personalized meniscus forming method, meniscus and mold | |
| EP0315283B1 (en) | A method of shaping an endoprosthesis | |
| US10463498B2 (en) | Constrained prosthesis for the knee joint | |
| JP5156727B2 (en) | Disposable articulated spacing device for surgical treatment of human joints | |
| US10092407B2 (en) | Constrained spacer device for the knee joint | |
| JP2004261574A (en) | Prosthetic implant surgical kit and orthopaedic implant assembly | |
| AU785208B2 (en) | Joint prosthesis molding method and die for performing the same | |
| CN109846580A (en) | Personalized range bone prosthese with biological function and preparation method thereof | |
| CN220442780U (en) | Customization device for knee joint spacious implantation prosthesis | |
| Jirman et al. | Individual replacement of the frontal bone defect: case report | |
| US20220313443A1 (en) | 3d printed monoblock orthopaedic surgical implant with customized patient-specific augment | |
| de Laat et al. | Cosmetic effect of knee joint in a knee disarticulation prosthesis. | |
| RU2796783C1 (en) | Method of manufacturing a lower leg exoprosthesis sleeve | |
| AU785375B2 (en) | Joint replacement prosthesis component with non linear insert | |
| US20220151790A1 (en) | Systems and methods for manufacturing orthopedic prostheses | |
| AU785369B2 (en) | Surface sterilizable joint replacement prosthesis component with insert | |
| CN210170232U (en) | Femoral distal unicondylar reconstruction prosthesis | |
| CN116616965A (en) | Fixed guide for personalized fitting of knee joint surface curvature and application thereof | |
| Kashyap et al. | Biomaterials for Biomedical Devices and Implants | |
| Ronca et al. | Knee Joint Replacements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |