CN116549185B - Block structure and positioning tool - Google Patents
Block structure and positioning tool Download PDFInfo
- Publication number
- CN116549185B CN116549185B CN202310824000.2A CN202310824000A CN116549185B CN 116549185 B CN116549185 B CN 116549185B CN 202310824000 A CN202310824000 A CN 202310824000A CN 116549185 B CN116549185 B CN 116549185B
- Authority
- CN
- China
- Prior art keywords
- layer
- porous structure
- patch
- porous
- patch structure
- 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
- 239000010410 layer Substances 0.000 claims abstract description 184
- 239000002344 surface layer Substances 0.000 claims abstract description 20
- 210000000988 bone and bone Anatomy 0.000 claims description 54
- 239000007787 solid Substances 0.000 claims description 24
- 238000002513 implantation Methods 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims 1
- 210000004394 hip joint Anatomy 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 10
- 239000002639 bone cement Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011295 pitch Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002594 fluoroscopy Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 208000032170 Congenital Abnormalities Diseases 0.000 description 1
- 208000009248 Congenital Hip Dislocation Diseases 0.000 description 1
- 208000013558 Developmental Bone disease Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 206010072610 Skeletal dysplasia Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- MTHLBYMFGWSRME-UHFFFAOYSA-N [Cr].[Co].[Mo] Chemical compound [Cr].[Co].[Mo] MTHLBYMFGWSRME-UHFFFAOYSA-N 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
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014906 developmental dysplasia of the hip Diseases 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
- A61F2/2846—Support means for bone substitute or for bone graft implants, e.g. membranes or plates for covering bone defects
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/30004—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
- A61F2002/30014—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis differing in elasticity, stiffness or compressibility
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2002/30769—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth madreporic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
Landscapes
- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Biomedical Technology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The application provides a patch structure and a positioning tool, wherein the patch structure comprises: the filling part comprises a first porous structure layer and a physical layer which are overlapped, wherein the first porous structure layer is positioned below the physical layer and comprises an inner layer close to the physical layer and a surface layer far away from the physical layer; the contact part comprises a second porous structure layer, the second porous structure layer is positioned at the side part of the filling part, and the surface of the contact part far away from the filling part is a first concave cambered surface; wherein the elastic modulus of the surface layer is smaller than the elastic modulus of the second porous structure layer. The technical scheme of the application effectively solves the problem of poor stability of the hip joint prosthesis caused by incapability of resetting the acetabular cup to the physiological acetabular position in the related technology.
Description
Technical Field
The application relates to the technical field of hip joint replacement, in particular to a patch structure and a positioning tool.
Background
The hip joint replacement can effectively eliminate pain of patients, correct hip joint deformity and restore the activity function of the patients. Hip prostheses generally include an acetabular cup, an acetabular cup liner, and a femoral stem. When the hip joint prosthesis is implanted, the ideal implantation position of the acetabular cup is a physiological acetabular position.
In the related art, when a prosthesis is implanted, the prosthesis has to be moved from a physiological acetabular site to a position where stable placement is possible due to a defect in a patient's bone or congenital hip dysplasia. Thus, although a patient can walk after the prosthesis is implanted, the prosthesis is not reset to the true acetabulum part, and the problem of loosening of the prosthesis can occur in the subsequent use process.
Disclosure of Invention
The application mainly aims to provide a patch structure and a patch tool, which are used for solving the problem of poor stability of a hip joint prosthesis caused by incapability of resetting an acetabular cup to a physiological acetabular position in the related art.
In order to achieve the above object, according to one aspect of the present application, there is provided a patch structure comprising: the filling part comprises a first porous structure layer and a physical layer which are overlapped, wherein the first porous structure layer is positioned below the physical layer and comprises an inner layer close to the physical layer and a surface layer far away from the physical layer; the contact part comprises a second porous structure layer, the second porous structure layer is positioned at the side part of the filling part, and the surface of the contact part far away from the filling part is a first concave cambered surface; wherein the elastic modulus of the surface layer is smaller than the elastic modulus of the second porous structure layer.
Further, the elastic modulus of the first porous structure layer gradually increases in the direction from the first porous structure layer to the solid layer.
Further, the elastic modulus of the first porous structure layer is between 40MPa and 120 GPa; and/or the elastic modulus of the second porous structure layer is between 600MPa and 250 GPa.
Further, the thickness of the first porous structure layer gradually decreases from the middle of the filling portion to the direction at the edge of the filling portion where the contact portion is not provided.
Further, the thickness T of the first porous structure layer 1 The following formula is satisfied:
；
wherein R is 1 A radius of the surface of the filling part far from the first concave cambered surface; h has a value ranging from 0mm to 36 mm.
Further, the thickness T of the second porous structure layer 2 The following formula is satisfied:；
wherein R is 2 A radius of the surface of the filling part far from the first concave cambered surface; l has a value ranging from 0mm to 40 mm.
Further, the filling part and the contact part are of an integrated structure.
Further, the patch structure further comprises a first connecting hole and a first screw, the first connecting hole penetrates through the filling portion, the first connecting hole is a threaded hole, and the first screw penetrates through the first connecting hole.
Further, the patch structure further comprises a first notch and a second notch, and the first notch and the second notch are oppositely arranged at the side part of the first connecting hole.
Further, the patch structure further comprises a second connecting hole and a second screw, the second connecting hole is a light hole, and the second screw is arranged in the second connecting hole in a penetrating mode.
Further, the patch system further comprises a plurality of fixing holes and a plurality of fixing pieces, wherein the fixing holes penetrate through the filling part, and the fixing holes and the fixing pieces are arranged in a one-to-one correspondence mode.
Further, the patch structure further comprises a plurality of positioning protruding thorns, wherein the plurality of positioning protruding thorns are arranged at intervals and are positioned on the surface, far away from the entity layer, of the first porous structure layer.
According to another aspect of the present application, there is provided a positioning tool for determining a position of the patch structure, where the positioning tool includes a hemispherical frame, and a second concave arc surface is disposed on the hemispherical frame, and a radius of a sphere where the second concave arc surface is located is the same as a radius of a sphere where the first concave arc surface is located.
Further, the positioning tool further comprises a connecting frame, the connecting frame is connected to the opening of the hemispherical frame, and a third connecting hole is formed in the connecting frame.
Further, the patch structure further comprises scale marks, the scale marks are arranged at the opening of the hemispherical frame, and the scale marks and the second concave cambered surface are correspondingly arranged.
By applying the technical scheme of the application, the filling part comprises a first porous structure layer and a physical layer, the first porous structure layer is overlapped below the physical layer, and the first porous structure layer comprises an inner layer close to the physical layer and a surface layer far away from the physical layer. The contact part is provided with a second porous structure layer, the second porous structure layer is positioned at the side part of the filling part, and the surface of the contact part far away from the filling part is a first concave cambered surface. The elastic modulus of the surface layer is smaller than that of the second porous structure layer. Through foretell setting, first porous structure layer provides three-dimensional space for the growth of human bone structure is gone into, even makes human bone structure can grow into in the patch structure, and then makes patch structure can fuse with the human body better. The first porous structure layer is disposed below the physical layer such that the first porous structure layer is capable of better contact with the bone structure of the human body. The second porous structural layer enables bone cement to enter the patch structure, and further enables the patch structure to be more stable in cooperation with the bone cement and the acetabular cup. The second porous structure layer is located on the side of the filling portion so that the patch structure can more effectively mate with the acetabular cup. The first concave arcuate surface enables the patch structure to better mate with the outer surface of the acetabular cup. The elastic modulus of the surface layer is smaller than that of the second porous layer, so that the surface layer has larger rigidity and elastic restoring force compared with the second porous layer, and further the entity layer and the contact part can be effectively supported, so that the contact part can absorb larger impact, namely, the patch structure can adapt to extreme conditions in more using processes, and the patch structure plays a role in effectively supporting in a human body. The placement of the filling portion and the contact portion enables the implanted acetabular cup to be in a physiological acetabular position. Therefore, the technical scheme of the application effectively solves the problem of poor stability of the hip joint prosthesis caused by the fact that the acetabular cup cannot be reset to the physiological acetabular position in the related technology.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a schematic exploded view of an embodiment of a patch structure according to the present application;
FIG. 2 shows a schematic front view of the patch structure of FIG. 1;
FIG. 3 shows a schematic side view of the patch structure of FIG. 2;
FIG. 4 shows a schematic top view of the patch structure of FIG. 2;
FIG. 5 shows a schematic cross-sectional view at A-A of the patch structure of FIG. 4;
FIG. 6 shows a schematic perspective view of a filler portion of the patch structure of FIG. 1;
FIG. 7 shows a schematic perspective view of a first screw of the patch structure of FIG. 1;
FIG. 8 shows a schematic cross-sectional view of the first screw of FIG. 7;
FIG. 9 shows a schematic perspective view of a positioning tool according to the application;
fig. 10 shows a schematic top view of the positioning tool of fig. 9.
Wherein the above figures include the following reference numerals:
10. a filling part; 11. a first porous structural layer; 12. a physical layer; 20. a contact portion; 21. a second porous structural layer; 22. a first concave cambered surface; 30. a first connection hole; 40. a first screw; 50. a first notch; 60. a second notch; 70. a second connection hole; 80. a second screw; 90. a fixing hole; 110. positioning the protruding thorns; 200. a hemispherical shelf; 201. a second concave cambered surface; 210. a connecting frame; 211. a third connection hole; 220. and (5) scale marks.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
As shown in fig. 1, in the present embodiment, the patch structure includes: a filling portion 10 and a contact portion 20. A filling part 10, wherein the filling part 10 comprises a first porous structure layer 11 and a physical layer 12 which are overlapped, the first porous structure layer 11 is positioned below the physical layer 12, and the first porous structure layer 11 comprises an inner layer close to the physical layer 12 and a surface layer far from the physical layer 12; a contact portion 20, the contact portion 20 includes a second porous structure layer 21, the second porous structure layer 21 is located at a side portion of the filling portion 10, and a surface of the contact portion 20 away from the filling portion 10 is a first concave arc surface 22; wherein the elastic modulus of the surface layer is smaller than the elastic modulus of the second porous structure layer 21.
By applying the technical solution of the present embodiment, the filling part 10 includes a first porous structure layer 11 and a physical layer 12, the first porous structure layer 11 is stacked under the physical layer 12, and the first porous structure layer 11 includes an inner layer close to the physical layer 12 and a surface layer far from the physical layer. The contact portion 20 is provided with a second porous structure layer 21, the second porous structure layer 21 is located at a side portion of the filling portion 10, and a surface of the contact portion 20 away from the filling portion 10 is a first concave arc surface 22. The elastic modulus of the surface layer is smaller than that of the second porous structure layer. Through the above arrangement, the first porous structure layer 11 provides a three-dimensional space structure for the growth of the human bone structure, i.e., the human bone structure can grow into the patch structure, and further the patch structure can be better fused with the human body. The first porous structure layer 11 is disposed under the physical layer 12 such that the first porous structure layer 11 can be in better contact with the bone structure of the human body. The second porous structural layer 21 allows bone cement to enter the patch structure, thereby making the patch structure more stable to fit with the bone cement and acetabular cup. The second porous structure layer 21 is located on the side of the filling portion 10 so that the patch structure can more effectively mate with the acetabular cup. The first concave arcuate surface 22 enables the patch structure to better mate with the outer surface of the acetabular cup. The elastic modulus of the surface layer is smaller than that of the second porous structure layer 21, so that the surface layer has larger rigidity and elastic restoring force than those of the second porous structure layer 21, and further the entity layer and the contact portion 20 can be effectively supported, so that the contact portion 20 can absorb larger impact, namely, the patch structure can adapt to more extreme cases in the use process, and the support effect can be effectively exerted in a human body. The placement of the filling portion 10 and the contact portion 20 enables the implanted acetabular cup to be in a physiological acetabular position. Therefore, the technical scheme of the embodiment effectively solves the problem of poor stability of the hip joint prosthesis caused by the fact that the acetabular cup cannot be reset to the physiological acetabular position in the related technology.
Specifically, the surface layer is matched with the bone structure of the human body, the first concave cambered surface 22 is matched with the outer surface of the acetabular cup, the relative positions of the spherical center of the first concave cambered surface 22 and the acetabular cup are kept fixed, and the bone structure of the human body can be cleaned by using files with the same specification when the patch structure is implanted. Preferably, the ratio of the surface layer to the inner layer is 1:1, so that the first porous structure layer has better strength and the surface layer is more stable in contact with the bone structure of the human body and the inner layer is more stable in contact with the solid layer. Of course, in an embodiment not shown in the figures, the ratio of the surface layer to the inner layer may also be 1: 2. 1: 3. 2: 1. 2: 3. 3: 2. 3:1 or other ratio.
Preferably, the first porous structure layer 11 is a trabecular bone-like porous structure and the second porous structure layer 21 is a diamond-like porous structure. The overlapping and embedded parts exist between the first porous structure layer 11 and the entity layer 12, so that the entity layer 12 and the first porous structure layer 11 are firmly combined together.
Specifically, in the present embodiment, a first groove and a first plug are provided between the first porous structure layer 11 and the solid layer 12, a second groove and a second plug are provided between the solid layer 12 and the second porous structure layer 21, the first plug is inserted into the first groove, and the second plug is inserted into the second groove. The first insert block comprises a first bar block, a second bar block and a connecting block connected between the first bar block and the second bar block, and the length of the connecting block is smaller than that of the first bar block. The shape of the first groove is adapted to the shape of the first insert. Such an arrangement can effectively improve the stability of the connection of the first porous structure layer 11 and the solid layer 12, and avoid the patch structure from being damaged. Likewise, the structure of the second plug is the same as that of the first plug.
As shown in fig. 1 and 2, in the present embodiment, the elastic modulus of the first porous structure layer 11 gradually increases in the direction from the first porous structure layer 11 to the solid layer 12. Through the above arrangement, the side of the first porous structure layer 11 far away from the entity layer 12 has better deformability, i.e. the side of the first porous structure layer 11 far away from the entity layer 12 can be better matched with the bone structure of the human body, so that the damage of the first porous structure layer 11 in the using process is avoided. The elastic modulus of the first porous structure layer 11 gradually increases, so that the side of the first porous structure layer 11 close to the solid layer 12 can be more stably attached to the solid layer 12.
As shown in fig. 1, in the present embodiment, it is characterized in that the elastic modulus of the first porous structure layer 11 is between 40MPa and 120 GPa; and/or the elastic modulus of the second porous structure layer 21 is between 600MPa and 250 GPa. The elastic modulus of the first porous structure layer 11 is between 40MPa and 120GPa, so that the elastic modulus of the first porous structure layer 11 far away from the solid layer 12 can be consistent with the human bone structure, the contact between the first porous structure layer 11 and the human bone structure is more stable, the elastic modulus of the side, close to the solid layer 12, of the first porous structure layer 11 can be consistent with the solid layer 12, and the contact between the side, close to the solid layer 12, of the first porous structure layer 11 and the solid layer 12 is more stable. The elastic modulus of the second porous structure layer 21 is between 600MPa and 250GPa, so that the elastic modulus of the second porous structure layer 21 can be consistent with the elastic modulus of the acetabular cup, and further the contact fit between the second porous structure layer 21 and the acetabular cup is more stable, friction between the second porous structure layer 21 and the acetabular cup in the use process of the patch structure is avoided, and the service lives of the patch structure and the acetabular cup are influenced.
In addition, MPa means unit megaPa, 1MPa is equal to 10 6 Papata and GPa refer to unit Jipata, 1GPa is equal to 10 9 Handkerchief.
Preferably, the elastic modulus of the side of the first porous structure layer 11 away from the solid layer is 64MPa, which is consistent with the elastic modulus of the human bone structure. The elastic modulus of the side of the second porous structure layer 21 away from the physical layer may be 840MPa, 110GPa, 220GPa, or of course other values, as long as it is ensured that the elastic modulus remains the same as that of the mating acetabular cup. The acetabular cup is cobalt chromium molybdenum cup when the elastic modulus of the side of the second porous structure layer 21 away from the solid layer is 840MPa, is titanium alloy cup when the elastic modulus of the side of the second porous structure layer 21 away from the solid layer is 110GPa, and is polyethylene cup when the elastic modulus of the side of the second porous structure layer 21 away from the solid layer is 220 GPa.
Specifically, the change in the elastic modulus of the first porous structure layer 11 and the second porous structure layer 21 is achieved by the change in the pore diameter of the trabecular bone-like porous structure.
As shown in fig. 1 to 3, in the present embodiment, the thickness of the first porous structure layer 11 gradually decreases from the middle of the filling portion 10 to the direction at the edge of the filling portion 10 where the contact portion 20 is not provided. Through foretell setting for first porous structure layer 11 not only can satisfy use intensity, has avoided the patch structure to cause the damage in the use, can also clear away less human bone structure when the patch structure implants, and the damage that causes human bone structure promptly is less.
Specifically, in the present embodiment, the filling portion 10 has four sides, and the contact portion 20 is provided on one of the four sides.
As shown in fig. 1 to 3, in the present embodiment, the thickness T of the first porous structure layer 11 1 The following formula is satisfied:；
wherein R is 1 Is filled withThe radius of the surface of the charging portion 10 away from the first concave cambered surface 22; h has a value ranging from 0mm to 36 mm. Through foretell setting for the thickness size of first porous structure layer 11 is more accurate, even makes first porous structure layer 11 under the prerequisite that satisfies use intensity, and the thickness of first porous structure layer 11 can be littleer, can occupy less space in the human body, and then makes the patch structure when implanting, can clear away less human bone structure, is favorable to the restoration of patch structure post-implantation patient. The thickness of the first porous structure layer 11 is gradually thinned from the lower part to the upper part, and the thickness of the upper part is thinner, so that the first porous structure layer is more stable and difficult to damage mechanically, and the stress of the first porous structure layer 11 is facilitated.
Preferably, the radius of the surface of the first concave cambered surface 22 is the same as the spherical radius of the acetabular cup.
Specifically, as shown in fig. 3, H refers to the distance from the straight line b at the position on the first porous structure layer 11. The thickness of the first porous structure layer 11 at the lowest part can reach about 3mm, and the thickness of the edge at the highest part tends to be 0, so that the effect of growing in the bone structure of the human body is better.
As shown in fig. 1 and 2, in the present embodiment, the thickness T of the second porous structure layer 21 2 The following formula is satisfied:；
wherein R is 2 A radius of the surface of the filling portion 10 away from the first concave cambered surface 22; l has a value ranging from 0mm to 40 mm. Through the above arrangement, the thickness of the second porous structure layer 21 when the first concave cambered surface 22 is arranged is not too small, and the second porous structure layer 21 can still meet the use strength. The thickness of the second porous structure layer 21 gradually becomes thinner from the middle to the two sides, and the thickness of the edge part is thinner, so that the second porous structure layer 21 is more stable and is not easy to damage in mechanics.
Specifically, R 1 And R is 2 The values of (2) are the same. As shown in fig. 2, L refers to the distance of the position on the second porous layer structure from the straight line a. The thickness of the intermediate portion of the second porous structure layer 21 can be up to about 3mmTo the right, the rim portion thickness tends to be 0, and better relatively stable results can be achieved when in contact with the acetabular cup.
Preferably by R 1 And R is 2 And the numerical values of H and L are changed, so that the patch structure which is suitable for acetabular cups with different thicknesses, different heights and different diameters can be obtained.
As shown in fig. 1 and 2, in the present embodiment, the filling portion 10 and the contact portion 20 are integrally formed. The filling part 10 and the contact part 20 are of an integrated structure, so that the structural strength of the patch structure is better, and the patch structure avoids the use of a connecting structure to fix the filling part 10 and the contact part 20 together in the production process, thereby reducing the weight of the patch structure.
Preferably, the filling portion 10 and the contact portion 20 are integrally formed by using EBM metal 3D printing. EBM refers to melting metal powder using an electron beam.
As shown in fig. 1 to 5 and fig. 7 and 8, in the present embodiment, the patch structure further includes a first connection hole 30 and a first screw 40, the first connection hole 30 penetrates the filling portion 10, the first connection hole 30 is a threaded hole, and the first screw 40 penetrates the first connection hole 30. The first connecting hole 30 enables the first screw 40 to penetrate, and then the first screw 40 can be screwed into the bone structure of the human body, so that the fixation of the patch structure is realized. The first connecting hole 30 is a threaded hole, so that the first screw 40 is in contact with the patch structure after being screwed into the bone structure of the human body, and the first screw 40 can effectively fix the patch structure.
Specifically, the end of the first connecting hole 30, which is far away from the first porous structure layer 11, is further provided with a concave portion, which provides a blocking effect for the first screw 40, so that the first screw 40 is prevented from being excessively screwed into a human bone structure to damage a human body, and the patch structure is prevented from falling off from the first screw 40 and the human bone structure. The concave part also provides a placement position for the holder of the patch structure, so that the patch structure is placed at the implantation position more smoothly. The tail end of the first screw 40 is provided with a notch, so that the bone structure of the human body can grow in, and the first screw 40 is fixed, so that the relative position between the patch structure and the human body can be fixed.
Preferably, the first screw 40 has two threads with different pitches, the thread matching the first connecting hole 30 is a first thread segment, and the thread matching the human bone structure is a second thread segment. The pitch of the threads of the first connection hole 30 is the same as the pitch of the first thread segments. The first screw 40 has a hollow structure inside.
The first screw 40 has a hollow structure inside so that bone structures can be grown therein, thereby achieving biosolidation. In order to provide better stability of the connection of the first screw 40 to the bone structure of the human body, a coating may be applied to the hollow structure to promote the growth of the bone structure. Or the hollow structure is filled with the human bone structure. The hollow structure also allows the kirschner wire to be driven into the bone structure of the human body to be implanted with the first screw 40 under X-ray fluoroscopy before the first screw 40 is screwed in, then the first screw 40 is drilled and tapped under the guidance of the kirschner wire, and finally the first screw 40 is screwed in along the kirschner wire.
Of course, in an embodiment not shown in the figures, the thread dimension of the first connecting hole 30 may also be slightly larger than the dimension of the internal thread cooperating with the first thread segment, so that the position of the first screw 40 in the first connecting hole 30 may be fine-tuned, i.e. the relative position of the first screw 40 and the cooperating bone structure of the human body may be fine-tuned when the patch structure is implanted, thereby enabling a more stable contact of the patch structure with the bone structure of the human body.
As shown in fig. 4 and 5, in the present embodiment, the patch structure further includes a first notch 50 and a second notch 60, and the first notch 50 and the second notch 60 are disposed at opposite sides of the first connection hole 30. The first notch 50 and the second notch 60 provide placement locations for the striking device, making the patch structure easier to implant into the human body.
As shown in fig. 1, 4 and 5, in the present embodiment, the patch structure further includes a second connection hole 70 and a second screw 80, where the second connection hole 70 is a light hole, and the second screw 80 is inserted into the second connection hole 70. The second connection hole 70 allows the second screw 80 to pass through the patch structure and then screw into the bone structure of the human body, thereby further fixing the patch structure. The second connection hole 70 is a light hole, so that the second screw 80 is smoother when being screwed into the bone structure of the human body.
Preferably, the aperture size of the second connection hole 70 is slightly larger than the size of the second screw 80, so that the relative position of the second screw 80 and the patch structure can be adjusted, providing more selectable directions for the second screw 80 to be screwed into the bone structure of the human body, i.e., enabling the second screw 80 to be screwed into a position on the bone structure of the human body that is more suitable for implantation, thereby enabling the patch structure to be more stably fixed to the bone structure of the human body. The angular adjustment of the second screw 80 within the second connection hole 70 ranges from 0 ° to 10 °, with 0 ° meaning that the second screw 80 coincides with the axis of the second connection hole 70, thus providing more options for the direction of the second screw 80. The tail end of the second screw 80 is provided with a notch, so that the bone structure of the human body can grow in, and the second screw 80 is fixed, so that the relative position between the patch structure and the human body can be fixed.
Specifically, in the present embodiment, the number of the second connection holes 70 and the second screws 80 is two, and the two second connection holes 70 are provided on both sides of the first connection hole 30, respectively. Preferably, two second connecting holes 70 are symmetrically disposed on the solid layer 12, and the symmetry axes of the two second connecting holes 70 are the plane on which the axes of the first connecting holes 30 lie. The distance between the axis of the first connecting hole 30 and the plane where the axes of the two second connecting holes 70 are located is greater than 0, so that the first connecting hole 30 and the two second connecting holes 70 form a three-point stable structure, namely, after the first screw 40 and the two second screws 80 are screwed into the human bone structure, the stress of the patch structure is more stable, the patch structure is more stable in contact with the human bone structure and the acetabular cup, and the service life of the patch structure is prolonged.
Preferably, the second screw 80 is hollow inside.
The second screw 80 is hollow inside so that bone structure can grow into it, thereby achieving biosolidation. In order to provide better stability of the connection of the second screw 80 to the bone structure of the human body, a coating may be applied to the hollow structure to promote the growth of the bone structure. Or the hollow structure is filled with the human bone structure. The hollow structure also allows the kirschner wire to be driven into the bone structure of the human body to be implanted with the second screw 80 under X-ray fluoroscopy before the second screw 80 is screwed in, then the hole is drilled and tapped under the guidance of the kirschner wire, and finally the second screw 80 is screwed in along the kirschner wire.
As shown in fig. 1 and 6, in the present embodiment, the patch system further includes a plurality of fixing holes 90, a plurality of fixing pieces, and the plurality of fixing holes 90 and the plurality of fixing pieces are disposed in one-to-one correspondence. The fixing holes 90 enable the fixing piece to penetrate through the patch structure and be inserted into the human bone structure, fixation of the patch structure before screwing of the first screw 40 and the second screw 80 is achieved, position change of the patch structure in the acetabular cup implantation process is avoided, and accordingly screwing of the first screw 40 and the second screw 80 is smoother.
Preferably, the fixing member is a k-wire, and the fixing hole 90 is used for the penetration of the k-wire.
As shown in fig. 3 and 6, in the present embodiment, the patch structure further includes a plurality of positioning bosses 110, and the plurality of positioning bosses 110 are spaced apart and located on the surface of the first porous structure layer 11 away from the physical layer 12. The positioning protruding thorns 110 enable the patch structure to be more stable to be fixed with the human bone structure, so that the patch structure is prevented from being changed in relative position with the human body after being implanted into the human body, and further damage to the human bone structure caused by the patch structure is avoided.
Specifically, the first notch 50 and the second notch 60 are the placement positions of the striking device, so that the positioning protruding thorn 110 can be inserted into the human bone structure under the striking action of the striking device, and the fixing of the patch structure and the human bone structure position is realized.
As shown in fig. 9 and 10, according to another aspect of the present application, a positioning tool is provided, in this embodiment, the positioning tool is used to determine the position of the patch structure, where the positioning tool includes a hemispherical frame 200, and a second concave arc surface 201 is disposed on the hemispherical frame 200, where the radius of the sphere where the second concave arc surface 201 is located is the same as the radius of the sphere where the first concave arc surface 22 is located. The radius of the sphere where the second concave cambered surface 201 is located is the same as the radius of the sphere where the first concave cambered surface 22 is located, so that before the patch structure is implanted, part of the human bone structure can be removed according to the cambered surface change trend of the second concave cambered surface 201, a space is provided for the implantation of the patch structure, and the implantation position of the patch structure after the part of the human bone structure is removed can be better attached to the appearance of the patch structure.
Preferably, the spherical diameter of the hemispherical frame 200 is the same as that of the acetabular fossa of the human body, so that the hemispherical frame 200 rotates in the acetabular fossa of the human body more smoothly, and the positioning tool is used more smoothly. The hemispherical frame 200 is further provided with a lightening hole, so that the overall weight of the positioning tool is lighter, and the use process of the positioning tool is more convenient. The lightening holes are triangular holes.
As shown in fig. 9 and 10, in the present embodiment, the positioning tool further includes a connection frame 210, the connection frame 210 is connected to the opening of the hemispherical frame 200, and a third connection hole 211 is provided on the connection frame 210. The connecting frame 210 connects the openings of the hemispherical frames 200, so that the overall structural strength of the positioning tool is better, and the positioning tool is prevented from being damaged in the use process, thereby affecting the implantation of the patch structure. The third connection hole 211 provides a mounting location for the holder of the positioning tool, so that the process of placing and taking out the positioning tool into and from the human acetabular fossa is easier.
Preferably, the third connecting hole 211 is a threaded hole, and the holder of the positioning tool is provided with an external thread section matched with the third connecting hole 211, so that the connection process of the holder of the positioning tool and the positioning tool is simpler and more convenient. The inside of the positioning tool is of a hollow structure, namely, the structure between the hemispherical frame 200 and the connecting frame 210 is of a hollow structure, so that the whole weight of the positioning tool is lighter, and the use of the positioning tool is facilitated.
Specifically, the connecting frame 210 includes three connecting columns, the three connecting columns form a herringbone structure, and the joint of the three connecting columns and the hemispherical frame 200 are respectively in arc transition, so that the connecting frame can be used for more stably connecting the hemispherical frame, and the service life of the positioning tool is prolonged.
As shown in fig. 9 and 10, in this embodiment, the patch structure further includes a scale mark 220, where the scale mark 220 is disposed at the opening of the hemispherical frame 200, and the scale mark 220 and the second concave arc surface 201 are disposed correspondingly. The scale marks 220 enable the relative positions of the positioning tool and the patch structure to be fixed, so that after the positioning tool is taken out, the implantation position of the patch structure can be the same as the implantation position of the patch structure determined by the positioning tool, and finally the implanted acetabular cup can be positioned at the original physiological structure position of a human body, thereby reducing the loosening and sterile repair rate of the prosthesis, improving the durability of the joint of the prosthesis, and being beneficial to the recovery and use of patients after the prosthesis is implanted.
Specifically, the positioning tool is formed by machining. Hemispherical shelf 200 conforms to the outer wall dimensions of the corresponding acetabular cup. The second concave arc 201 is on the same sphere as the bone interface where the patch structure is intended to be placed. After the positioning tool is placed at the intended implantation position of the acetabular cup, the rasp is used to treat the bone of the human body upward along the second concave cambered surface 201, and the treated portion is the intended patch placement portion. In addition, the positioning tool is provided with a mark for assisting in determining the angle, namely, the degree mark 220, so that the expected implantation position of the patch can be well confirmed.
In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A patch structure comprising:
a filling part (10), wherein the filling part (10) comprises a first porous structure layer (11) and a solid layer (12) which are arranged in a superposed manner, the first porous structure layer (11) is positioned below the solid layer (12), and the first porous structure layer (11) comprises an inner layer close to the solid layer (12) and a surface layer far away from the solid layer (12);
the contact part (20), the contact part (20) comprises a second porous structure layer (21), the second porous structure layer (21) is positioned at the side part of the filling part (10), and the surface of the contact part (20) far away from the filling part (10) is a first concave cambered surface (22);
wherein the elastic modulus of the surface layer is smaller than the elastic modulus of the second porous structure layer (21);
-the elastic modulus of the first porous structural layer (11) increases gradually in the direction from the first porous structural layer (11) to the solid layer (12);
thickness T of the first porous structure layer (11) 1 The following formula is satisfied:；
wherein R is 1 A radius of a surface of the filling part (10) away from the first concave cambered surface (22); the value range of H is between 0mm and 36 mm;
thickness T of the second porous structure layer (21) 2 The following formula is satisfied:；
wherein R is 2 A radius of a surface of the filling part (10) away from the first concave cambered surface (22); l has a value ranging from 0mm to 40 mm.
2. The patch structure according to claim 1, characterized in that the elastic modulus of the first porous structural layer (11) is between 40MPa and 120 GPa; and/or the elastic modulus of the second porous structure layer (21) is between 600MPa and 250 GPa.
3. Patch structure according to claim 1, characterized in that the thickness of the first porous structure layer (11) gradually decreases from the middle of the filling portion (10) to the direction of the edge of the filling portion (10) where the contact portion (20) is not provided.
4. Patch structure according to claim 1, characterized in that the filling portion (10) and the contact portion (20) are of an integrally formed structure.
5. The patch structure according to claim 1, further comprising a first connection hole (30) and a first screw (40), the first connection hole (30) penetrating the filling portion (10), the first connection hole (30) being a threaded hole, the first screw (40) penetrating the first connection hole (30).
6. The patch structure according to claim 5, further comprising a first notch (50) and a second notch (60), the first notch (50) and the second notch (60) being oppositely disposed on sides of the first connection hole (30).
7. The patch structure according to claim 1, further comprising a second connection hole (70) and a second screw (80), the second connection hole (70) being an optical hole, the second screw (80) being threaded into the second connection hole (70).
8. The patch structure according to claim 1, further comprising a plurality of fixing holes (90) and a plurality of fixing pieces, wherein a plurality of the fixing holes (90) penetrate the filling portion (10), and a plurality of the fixing holes (90) and a plurality of the fixing pieces are provided in one-to-one correspondence.
9. The patch structure according to claim 1, further comprising a plurality of positioning bosses (110), wherein a plurality of the positioning bosses (110) are spaced apart and located on a surface of the first porous structural layer (11) remote from the solid layer (12).
10. A positioning tool, characterized in that the positioning tool is used for determining the position of the patch structure according to any one of claims 1 to 9, the positioning tool comprises a hemispherical frame (200), a second concave cambered surface (201) is arranged on the hemispherical frame (200), the radius of the sphere where the second concave cambered surface (201) is located is the same as the radius of the sphere where the first concave cambered surface (22) is located, so that before the patch structure is implanted, part of human bone structures can be removed according to the cambered surface change trend of the second concave cambered surface (201), and space is provided for the implantation of the patch structure; the positioning tool further comprises a connecting frame (210), the connecting frame (210) is connected to the opening of the hemispherical frame (200), and a third connecting hole (211) is formed in the connecting frame (210); the patch structure further comprises scale marks (220), the scale marks (220) are arranged at the opening of the hemispherical frame (200), and the scale marks (220) and the second concave cambered surface (201) are correspondingly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310824000.2A CN116549185B (en) | 2023-07-06 | 2023-07-06 | Block structure and positioning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310824000.2A CN116549185B (en) | 2023-07-06 | 2023-07-06 | Block structure and positioning tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116549185A CN116549185A (en) | 2023-08-08 |
| CN116549185B true CN116549185B (en) | 2023-10-27 |
Family
ID=87496829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310824000.2A Active CN116549185B (en) | 2023-07-06 | 2023-07-06 | Block structure and positioning tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116549185B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6416553B1 (en) * | 1999-03-31 | 2002-07-09 | Biomet, Inc. | Method and apparatus for providing a modular acetabular prosthesis |
| CN206651895U (en) * | 2016-10-27 | 2017-11-21 | 北京爱康宜诚医疗器材有限公司 | Acetabular bone fills block assembly and has its Hip System |
| CN110584838A (en) * | 2019-09-12 | 2019-12-20 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
| CN110755178A (en) * | 2019-11-29 | 2020-02-07 | 重庆英泰帝克科技有限公司 | Acetabular cap prosthesis and manufacturing method thereof |
| CN111297519A (en) * | 2020-02-17 | 2020-06-19 | 赵德伟 | Metal hip joint prosthesis with porous layer structure and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8906108B2 (en) * | 2012-06-18 | 2014-12-09 | DePuy Synthes Products, LLC | Dual modulus hip stem and method of making the same |
| US10092304B2 (en) * | 2014-09-30 | 2018-10-09 | Depuy Ireland Unlimited Company | Orthopaedic surgical instrument assembly for reaming a patient's acetabulum |
-
2023
- 2023-07-06 CN CN202310824000.2A patent/CN116549185B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6416553B1 (en) * | 1999-03-31 | 2002-07-09 | Biomet, Inc. | Method and apparatus for providing a modular acetabular prosthesis |
| CN206651895U (en) * | 2016-10-27 | 2017-11-21 | 北京爱康宜诚医疗器材有限公司 | Acetabular bone fills block assembly and has its Hip System |
| CN110584838A (en) * | 2019-09-12 | 2019-12-20 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
| CN110755178A (en) * | 2019-11-29 | 2020-02-07 | 重庆英泰帝克科技有限公司 | Acetabular cap prosthesis and manufacturing method thereof |
| CN111297519A (en) * | 2020-02-17 | 2020-06-19 | 赵德伟 | Metal hip joint prosthesis with porous layer structure and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116549185A (en) | 2023-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6707107B2 (en) | Shoulder prosthesis with variable tilt humeral head component | |
| CN103702637B (en) | Revise glenoid device | |
| US6063124A (en) | Acetabular cup prosthesis insertion and removal assembly and technique | |
| CN101277651B (en) | Implant | |
| US5176711A (en) | Acetabular revision system | |
| CA2631580C (en) | Shoulder arthroplasty system | |
| US11071635B2 (en) | Shoulder prosthesis with variable inclination humeral head component | |
| CA2588523C (en) | Femoral head resurfacing | |
| JP6882187B2 (en) | Convertible Grenoid | |
| US20060058887A1 (en) | Unitary acetabular cup prosthesis with extension for deficient acetabulum | |
| CN104042367A (en) | System And Method For Implanting A Secondary Glenoid Prosthesis | |
| JP2012523942A (en) | Acetabular cup | |
| CN111759546A (en) | Pelvic prosthesis | |
| US20160045320A1 (en) | Variable hip resurfacing femoral implant | |
| EP1388329B1 (en) | Femoral prosthesis for hip joint | |
| CN107979994B (en) | Screw-threaded addible acetabular shell with an augmentation part | |
| CN113271893A (en) | Acetabular orthopaedic prosthesis and method | |
| CN116687626B (en) | Talus repair prosthesis | |
| CN116549185B (en) | Block structure and positioning tool | |
| KR102622251B1 (en) | Ball and cup impactors for implanting a hip prosthesis | |
| CN101917936B (en) | Acetabular prosthesis | |
| CN212346823U (en) | Pelvic prosthesis | |
| CN116492116B (en) | Acetabulum cushion block | |
| CN213346178U (en) | Femoral stem prosthesis | |
| US20230397993A1 (en) | Prostheses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |