CN110538010A - Unicondylar knee joint prosthesis - Google Patents
Unicondylar knee joint prosthesis Download PDFInfo
- Publication number
- CN110538010A CN110538010A CN201910877622.5A CN201910877622A CN110538010A CN 110538010 A CN110538010 A CN 110538010A CN 201910877622 A CN201910877622 A CN 201910877622A CN 110538010 A CN110538010 A CN 110538010A
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- Prior art keywords
- tibial
- pad
- main body
- unicondylar knee
- tibial pad
- Prior art date
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- 210000000629 knee joint Anatomy 0.000 title abstract description 19
- 210000002303 tibia Anatomy 0.000 claims abstract description 39
- 210000000689 upper leg Anatomy 0.000 claims abstract description 20
- 210000003127 knee Anatomy 0.000 claims description 17
- 238000004873 anchoring Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 210000001694 thigh bone Anatomy 0.000 abstract description 6
- 239000007943 implant Substances 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000002639 bone cement Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000008733 trauma 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
- A61F2/38—Joints for elbows or knees
- A61F2/3859—Femoral components
-
- 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
- A61F2/38—Joints for elbows or knees
- A61F2/389—Tibial components
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (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 invention provides a unicondylar knee joint prosthesis, wherein a femoral condyle, a tibial pad and a tibial platform are arranged in the unicondylar knee joint prosthesis, a main body of the femoral condyle is used for being connected with a femur, a limiting structure is arranged on the main body, and at least one part of the limiting structure protrudes out of the edge of a first joint surface of the main body; the second articular surface of tibial pad cooperates with first articular surface, and limit structure and the spacing cooperation in side of tibial pad, tibial plateau are used for being connected with the shin bone, and tibial plateau cooperates with one side that deviates from the thighbone condyle of tibial pad, and the tibial pad is the movably setting of tibial plateau relatively. The function of knee joint can be realized after the implant patient is internal through this scheme to, through the spacing cooperation of limit structure and tibial pad, can restrict the home range of tibial pad, thereby avoided tibial pad and thighbone condyle to break away from or tibial pad and tibial plateau break away from, avoided the easy problem of dislocating of unicondylar knee joint prosthesis promptly, improved the reliability that the prosthesis was implanted for a long time.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a unicondylar knee joint prosthesis.
background
With the increasing enhancement of minimally invasive concept in clinic, the unicondylar knee prosthesis is gradually favored by clinicians. When the anterior medial osteoarthritis is treated, the unicondylar knee prosthesis has obvious advantages, such as small trauma, less blood loss, short operation time, quick recovery of patients and the like. Currently, the unicondylar knee joint prosthesis mainly has two typical forms of a fixed platform and a movable platform.
The movable platform type unicondylar knee joint prosthesis has wider application in clinic, is convenient for the installation of doctors in operation, and reduces the abrasion loss of the prosthesis. However, the existing unicondylar knee joint prosthesis is lack of constraint and is easy to dislocate, once the dislocation occurs, secondary operation is needed, and mental pain and economic loss are brought to patients.
Disclosure of Invention
The invention provides a unicondylar knee joint prosthesis, which aims to solve the problem that the unicondylar knee joint prosthesis in the prior art is easy to dislocate.
In order to solve the above problems, the present invention provides a unicondylar knee prosthesis, comprising: the femoral condyle comprises a main body and a limiting structure, wherein the main body is provided with an arc-shaped first joint surface and is used for being connected with a femur, the limiting structure is arranged on the main body, and at least one part of the limiting structure protrudes out of the edge of the first joint surface; the tibia pad is provided with an arc-shaped second joint surface, the second joint surface is matched with the first joint surface so that the tibia pad slides along the extension direction of the first joint surface, and the limiting structure is in limiting fit with the side surface of the tibia pad; the tibia platform is used for being connected with tibia, the tibia platform is matched with one side, away from the femur condyle, of the tibia pad to support the tibia pad, and the tibia pad is movably arranged relative to the tibia platform.
Further, limit structure includes the baffle, and the baffle sets up the side at the main part along the extending direction of first articular surface.
Further, the baffle is two, and two baffles set up the both sides at first articular surface one-to-one, and the shin bone pad is located between two baffles, and two sides of shin bone pad are spacing cooperation with two baffles one-to-one.
Further, the main part is the arc platelike structure, and the side of main part that deviates from the shin pad has curved interior profile, and interior profile is used for cooperating with the thighbone.
Further, the main part is the arc plate-shaped structure, and the femoral condyle still includes: the fixed column, the fixed column setting is in the one side that deviates from the shin pad of main part, and the fixed column is used for penetrating in the thighbone.
Further, be provided with first spacing groove on the outer peripheral face of fixed column, the fixed column is two, and two fixed column intervals set up in the main part, and two fixed columns are different along the length that deviates from the direction of main part.
Further, the side of the tibial pad facing away from the femoral condyle is a plane, and the side of the tibial plateau cooperating with the tibial pad is a plane.
Further, tibial plateau includes the supporting seat and sets up the connecting plate on the supporting seat, and supporting seat and tibial pad cooperation, connecting plate are located one side that deviates from the tibial pad of supporting seat, and the connecting plate is used for penetrating in the shin bone.
Furthermore, a second limiting groove and a third limiting groove are arranged on the connecting plate, and the second limiting groove and the third limiting groove are respectively located on two sides of the connecting plate.
Further, the connecting plate is two, and two connecting plate intervals set up on the supporting seat, and two connecting plates are different along the length that deviates from the direction of supporting seat.
By applying the technical scheme of the invention, the unicondylar knee joint prosthesis is provided with the femoral condyle, the tibial pad and the tibial platform, the femoral condyle comprises a main body and a limiting structure, the main body is used for being connected with the femur, the limiting structure is arranged on the main body, and at least one part of the limiting structure protrudes out of the edge of the first joint surface of the main body; the second articular surface of tibial pad cooperates with first articular surface to make the tibial pad slide along the extending direction of first articular surface, limit structure and the spacing cooperation in tibial pad's side, the tibial plateau is used for being connected with the shin bone, the tibial plateau cooperates with one side that deviates from the thighbone condyle of tibial pad, and the tibial pad is the movably setting of tibial plateau relatively. The function of knee joint can be realized after the implant patient is internal through this scheme to, through the spacing cooperation of limit structure and tibial pad, can restrict the home range of tibial pad, thereby avoided tibial pad and thighbone condyle to break away from or tibial pad and tibial plateau break away from, avoided the easy problem of dislocating of unicondylar knee joint prosthesis promptly, improved the reliability that the prosthesis was implanted for a long time.
drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 illustrates a schematic structural view of a unicondylar knee prosthesis provided by an embodiment of the present invention;
FIG. 2 shows a schematic structural view of the femoral condyle of FIG. 1;
FIG. 3 shows a schematic view of the tibial pad of FIG. 1;
Fig. 4 shows a schematic structural view of the tibial plateau of fig. 1.
wherein the figures include the following reference numerals:
10. A femoral condyle; 11. a main body; 12. a limiting structure; 13. a first articular surface; 14. an inner profile; 15. fixing a column; 16. a first limit groove; 17. a baffle plate; 20. a tibial pad; 21. a second articular surface; 30. a tibial plateau; 31. a supporting seat; 32. a connecting plate; 33. a second limit groove; 34. and a third limiting groove.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, an embodiment of the present invention provides a unicondylar knee prosthesis, including: the femoral condyle comprises a femoral condyle 10, wherein the femoral condyle 10 comprises a main body 11 and a limiting structure 12, the main body 11 is provided with an arc-shaped first joint surface 13, the main body 11 is used for being connected with a femur, the limiting structure 12 is arranged on the main body 11, and at least one part of the limiting structure 12 protrudes out of the edge of the first joint surface 13; the tibia pad 20 is provided with an arc-shaped second joint surface 21, the second joint surface 21 is matched with the first joint surface 13, so that the tibia pad 20 slides along the extending direction of the first joint surface 13, and the limiting structure 12 is in limiting fit with the side surface of the tibia pad 20; a tibial plateau 30 for connection to the tibia, the tibial plateau 30 cooperating with a side of the tibial pad 20 facing away from the femoral condyle 10 to support the tibial pad 20, the tibial pad 20 being movably arranged relative to the tibial plateau 30.
By applying the technical scheme of the embodiment, the unicondylar knee prosthesis is provided with a femoral condyle 10, a tibial pad 20 and a tibial platform 30, the femoral condyle 10 comprises a main body 11 and a limiting structure 12, the main body 11 is used for being connected with a femur, the limiting structure 12 is arranged on the main body 11, and at least one part of the limiting structure 12 protrudes out of the edge of a first joint surface 13 of the main body 11 along the thickness direction of the main body 11; the second articular surface 21 of the tibial pad 20 is matched with the first articular surface 13, so that the tibial pad 20 slides along the extending direction of the first articular surface 13, the limit structure 12 is in limit fit with the lateral surface of the tibial pad 20, the tibial plateau 30 is used for being connected with the tibia, the tibial plateau 30 is matched with one side of the tibial pad 20, which is far away from the femoral condyle 10, and the tibial pad 20 is movably arranged relative to the tibial plateau 30. The function of the knee joint can be realized after the prosthesis is implanted into the body of a patient through the scheme, and the limit matching of the limit structure 12 and the tibial pad 20 can limit the moving range of the tibial pad 20, so that the tibial pad 20 is prevented from being separated from the femoral condyle 10 or the tibial pad 20 is prevented from being separated from the tibial plateau 30, namely, the problem that the unicondylar knee joint prosthesis is easy to dislocate is solved, and the reliability of the prosthesis in long-term implantation is improved.
In this embodiment, the first joint surface 13 extends along a curve of equal radius, so that a good joint function is achieved. The second articular surface 21 matches the first articular surface 13.
As shown in fig. 1 and 2, the position limiting structure 12 includes a baffle 17, and the baffle 17 is disposed on a side surface of the main body 11 along the extending direction of the first joint surface 13. Through the arrangement, the tibia pad 20 moves relative to the femur condyle 10, and can be limited by the limiting structure 12 in the process of being matched with different positions of the first joint surface 13, so that the limiting reliability is improved. Alternatively, in the present embodiment, the baffle 17 may be provided as an arc-shaped plate.
further, the number of the baffles 17 is two, the two baffles 17 are correspondingly arranged on two sides of the first articular surface 13 one by one, the tibial pad 20 is located between the two baffles 17, and two side surfaces of the tibial pad 20 are correspondingly matched with the two baffles 17 in a limiting manner one by one. Through the arrangement, the two side surfaces of the tibial pad 20 can be limited through the two baffles 17, so that the tibial pad 20 can only slide along the first joint surface 13 in the area between the two baffles 17, the limiting reliability is improved, and the tibial pad 20 moves along a preset path. Optionally, the two opposing faces of the baffle 17 are polished to reduce friction.
In this embodiment the body 11 is of arcuate plate-like construction, the side of the body 11 facing away from the tibial pad 20 having an arcuate inner profile 14, the inner profile 14 being for engagement with the femur. The provision of the inner profile 14 facilitates connection and biological fusion with the patient's femur.
in the present embodiment, the main body 11 is an arc-shaped plate structure, and the femoral condyle 10 further includes: an anchoring post 15, the anchoring post 15 being arranged on the side of the main body 11 facing away from the tibia pad 20, the anchoring post 15 being intended to penetrate into the femur. The fixing columns 15 are arranged, so that the connection strength of the femoral condyle 10 and the femur can be improved.
As shown in fig. 2, the first limiting groove 16 is provided on the outer peripheral surface of the fixing column 15, two fixing columns 15 are provided on the main body 11 at intervals, and the lengths of the two fixing columns 15 along the direction departing from the main body 11 are different. The first limiting groove 16 can be used for filling materials such as bone cement and the like so as to improve the connection strength of the fixing column 15 and the femur and avoid separation. The two fixing posts 15 prevent the femoral condyle 10 from rotating relative to the femur. Optionally, the fixing post 15 is provided with a plurality of first limiting grooves 16 at intervals along the circumferential direction of the fixing post 15, so as to further improve the connection strength between the fixing post 15 and the femur and prevent the fixing post 15 from rotating relative to the femur.
In this embodiment, the side of the tibial pad 20 facing away from the femoral condyle 10 is planar and the side of the tibial plateau 30 that mates with the tibial pad 20 is planar. Therefore, the surfaces of the tibial pad 20 and the tibial platform 30 which are contacted with each other are flat surfaces, so that the structures of the tibial pad 20 and the tibial platform 30 can be simplified, the manufacturing is convenient, and the cost is reduced. Optionally, the surfaces of the tibial pad 20 and the tibial plateau 30 that contact each other are polished to reduce friction.
As shown in fig. 4, the tibial platform 30 includes a support seat 31 and a coupling plate 32 disposed on the support seat 31, the support seat 31 is engaged with the tibial pad 20, the coupling plate 32 is disposed on a side of the support seat 31 facing away from the tibial pad 20, and the coupling plate 32 is configured to penetrate into the tibia. The strength of the connection of the tibial plateau 30 to the tibia may be improved by the provision of the connection plate 32. Moreover, the coupling plate 32 is a plate-like structure that prevents the tibial platform 30 from deflecting relative to the tibia.
Further, a second limiting groove 33 and a third limiting groove 34 are formed in the connecting plate 32, and the second limiting groove 33 and the third limiting groove 34 are located on two sides of the connecting plate 32 respectively. The second limiting groove 33 and the third limiting groove 34 can be filled with materials such as bone cement, so that the connection strength of the connecting plate 32 and the tibia is improved, and the connecting plate is prevented from being separated from the tibia.
In this embodiment, there are two connecting plates 32, the two connecting plates 32 are disposed on the supporting seat 31 at intervals, and the lengths of the two connecting plates 32 in the direction away from the supporting seat 31 are different. The strength of the connection of the tibial plateau 30 to the tibia may be improved by the two connecting plates 32. The two connecting plates 32 have different lengths in the direction away from the support base 31, so as to be matched with the tibia structure, wherein the short connecting plate 32 is used for being connected with the outer side of the tibia, and the long connecting plate 32 is used for being connected with the inner side of the tibia.
In the clinical application process, the damaged femoral condyle is processed into the shape of the inner profile 14 of the femoral condyle 10 by a special tool, holes are drilled according to the positions of the fixing columns 15 of the femoral condyle 10, then the femoral condyle 10 is installed on the distal end of the femur, the proximal end of the tibia is cut by the tool according to the proper heights of the tibial pad 20 and the tibial platform 30, then the grooves are formed according to the positions of the connecting plates 32 on the inner side and the outer side of the tibial platform 30, the tibial platform 30 is installed on the proximal tibial bed, finally the bottom surface of the tibial pad 20 is placed on the upper plane of the tibial platform, the second joint surface 21 of the tibial pad 20 is in matched contact with the first joint surface 13 of the femoral condyle 10, and the side surface of the tibial pad 20 is in contact with the two baffles 17 of the femoral condyle 10.
after the installation is completed, during the flexion and extension movement of the femoral condyle 10, the two baffles 17 of the femoral condyle 10 limit the tibial pad 20, and the tibial pad 20 can freely move on the upper plane of the tibial platform 30, but the tibial pad 20 is not separated from the femoral condyle 10, so that the dislocation of the tibial pad 20 is avoided.
The prosthesis is made of artificial prosthesis biomaterial, the inner profile 14 of the femoral condyle 10, the fixing column 15, the bottom surface of the tibial plateau 30 and the connecting plate 32 can be fixed with a bone bed through bone cement, and biological coating materials such as pure titanium coatings, hydroxyapatite coatings and the like can be added to realize biological fixation with the bone bed.
By applying the technical scheme of the embodiment, the unicondylar knee prosthesis is provided with a femoral condyle 10, a tibial pad 20 and a tibial platform 30, the femoral condyle 10 comprises a main body 11 and a limiting structure 12, the main body 11 is used for being connected with a femur, the limiting structure 12 is arranged on the main body 11, and at least one part of the limiting structure 12 protrudes out of the edge of a first joint surface 13 of the main body 11 along the thickness direction of the main body 11; the second articular surface 21 of the tibial pad 20 is matched with the first articular surface 13, so that the tibial pad 20 slides along the extending direction of the first articular surface 13, the limit structure 12 is in limit fit with the lateral surface of the tibial pad 20, the tibial plateau 30 is used for being connected with the tibia, the tibial plateau 30 is matched with one side of the tibial pad 20, which is far away from the femoral condyle 10, and the tibial pad 20 is movably arranged relative to the tibial plateau 30. The function of the knee joint can be realized after the prosthesis is implanted into the body of a patient through the scheme, and the limit matching of the limit structure 12 and the tibial pad 20 can limit the moving range of the tibial pad 20, so that the tibial pad 20 is prevented from being separated from the femoral condyle 10 or the tibial pad 20 is prevented from being separated from the tibial plateau 30, namely, the problem that the unicondylar knee joint prosthesis is easy to dislocate is solved, and the reliability of the prosthesis in long-term implantation is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A unicondylar knee prosthesis, comprising:
a femoral condyle (10), wherein the femoral condyle (10) comprises a main body (11) and a limit structure (12), the main body (11) is provided with a first arc-shaped joint surface (13), the main body (11) is used for being connected with a femur, the limit structure (12) is arranged on the main body (11), and at least one part of the limit structure (12) protrudes out of the edge of the first joint surface (13);
The tibia pad (20) is provided with an arc-shaped second joint surface (21), the second joint surface (21) is matched with the first joint surface (13) so that the tibia pad (20) can slide along the extension direction of the first joint surface (13), and the limiting structure (12) is in limiting fit with the side surface of the tibia pad (20);
A tibial plateau (30) for connection with a tibia, the tibial plateau (30) cooperating with a side of the tibial pad (20) facing away from the femoral condyle (10) to support the tibial pad (20), the tibial pad (20) being movably arranged relative to the tibial plateau (30).
2. Unicondylar knee prosthesis according to claim 1, characterized in that the retaining structure (12) comprises a baffle (17), the baffle (17) being arranged laterally of the body (11) in the direction of extension of the first articular surface (13).
3. The unicondylar knee prosthesis of claim 2, wherein there are two said baffles (17), two said baffles (17) being disposed one on each side of said first articular surface (13), said tibial pad (20) being disposed between two said baffles (17), two sides of said tibial pad (20) being in a one-to-one positive fit with two said baffles (17).
4. Unicondylar knee prosthesis according to claim 1, characterized in that the body (11) is of arcuate plate-like construction, the side of the body (11) facing away from the tibial pad (20) having an arcuate inner profile (14), the inner profile (14) being intended to cooperate with the femur.
5. The unicondylar knee prosthesis of claim 1, wherein the body (11) is an arcuate plate-like structure, the femoral condyle (10) further comprising:
an anchoring post (15), the anchoring post (15) being arranged on a side of the main body (11) facing away from the tibia pad (20), the anchoring post (15) being intended to penetrate into the femur.
6. The unicondylar knee prosthesis according to claim 5, wherein the fixing posts (15) are provided with first limit grooves (16) on the outer peripheral surfaces thereof, the number of the fixing posts (15) is two, the two fixing posts (15) are arranged on the main body (11) at intervals, and the lengths of the two fixing posts (15) in the direction away from the main body (11) are different.
7. Unicondylar knee prosthesis according to claim 1, characterized in that the side of the tibial pad (20) facing away from the femoral condyle (10) is planar and the side of the tibial plateau (30) cooperating with the tibial pad (20) is planar.
8. Unicondylar knee prosthesis according to claim 1, characterized in that the tibial plateau (30) comprises a support seat (31) and a web (32) arranged on the support seat (31), the support seat (31) cooperating with the tibial pad (20), the web (32) being located on the side of the support seat (31) facing away from the tibial pad (20), the web (32) being intended to penetrate into the tibia.
9. The unicondylar knee prosthesis of claim 8, wherein a second retaining groove (33) and a third retaining groove (34) are provided on the connecting plate (32), the second retaining groove (33) and the third retaining groove (34) being located on either side of the connecting plate (32).
10. The unicondylar knee prosthesis of claim 8, wherein there are two of said webs (32), two of said webs (32) being spaced apart on said support seat (31), the lengths of the two webs (32) in a direction away from said support seat (31) being different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877622.5A CN110538010B (en) | 2019-09-17 | 2019-09-17 | Unicondylar knee joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877622.5A CN110538010B (en) | 2019-09-17 | 2019-09-17 | Unicondylar knee joint prosthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110538010A true CN110538010A (en) | 2019-12-06 |
| CN110538010B CN110538010B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910877622.5A Active CN110538010B (en) | 2019-09-17 | 2019-09-17 | Unicondylar knee joint prosthesis |
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| CN (1) | CN110538010B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603278A (en) * | 2020-06-22 | 2020-09-01 | 北京爱康宜诚医疗器材有限公司 | Knee joint prosthesis |
| CN112674913A (en) * | 2021-01-14 | 2021-04-20 | 福州大学 | Unicondylar knee joint prosthesis capable of preventing looseness and working method thereof |
| CN113367854A (en) * | 2021-05-24 | 2021-09-10 | 北京纳通医疗科技控股有限公司 | Tibial tray prosthesis and knee joint prosthesis |
| CN113813007A (en) * | 2021-10-13 | 2021-12-21 | 山东大学齐鲁医院(青岛) | Angle-adjustable femoral punching device |
| CN113892999A (en) * | 2021-10-13 | 2022-01-07 | 山东大学齐鲁医院(青岛) | Thighbone perforating device |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0194326A1 (en) * | 1983-09-23 | 1986-09-17 | orthoplant Endoprothetik GmbH | Knee-joint endoprosthesis |
| US5609643A (en) * | 1995-03-13 | 1997-03-11 | Johnson & Johnson Professional, Inc. | Knee joint prosthesis |
| US6443991B1 (en) * | 1998-09-21 | 2002-09-03 | Depuy Orthopaedics, Inc. | Posterior stabilized mobile bearing knee |
| US20060129246A1 (en) * | 2004-10-20 | 2006-06-15 | Zimmer Technology, Inc. | Mobile bearing unicondylar knee prosthesis |
| US20060235537A1 (en) * | 2005-04-18 | 2006-10-19 | Accin Corporation | Unicondylar knee implant |
| CN104507420A (en) * | 2012-04-19 | 2015-04-08 | 泰克尼梅德公司 | Spacer implant for the temporary replacement of knee prosthesis |
| CN105105888A (en) * | 2015-09-28 | 2015-12-02 | 北京市春立正达医疗器械股份有限公司 | Fixed platform knee joint prosthesis |
| CN105640671A (en) * | 2016-03-03 | 2016-06-08 | 华中科技大学同济医学院附属同济医院 | Single-condyle artificial knee joint |
| CN106456334A (en) * | 2014-04-29 | 2017-02-22 | 阿斯卡拉波股份有限公司 | Knee-joint endoprosthesis |
| CN107595443A (en) * | 2017-10-25 | 2018-01-19 | 北京安颂科技有限公司 | Split type lateral femoral condyle prosthesis and artificial knee joint |
| CN107789099A (en) * | 2016-08-31 | 2018-03-13 | 嘉思特华剑医疗器材(天津)有限公司 | Retain bone amount simple joint displacement knee-joint prosthesis |
| CN107898536A (en) * | 2017-11-09 | 2018-04-13 | 北京市春立正达医疗器械股份有限公司 | Knee-joint prosthesis |
| CN108095862A (en) * | 2017-12-22 | 2018-06-01 | 北京爱康宜诚医疗器材有限公司 | Single condyle prosthese |
| CN108392297A (en) * | 2018-04-10 | 2018-08-14 | 北京市春立正达医疗器械股份有限公司 | Single condyle knee-joint prosthesis |
| CN109528361A (en) * | 2018-12-17 | 2019-03-29 | 天衍医疗器材有限公司 | Femoral component and single condyle prosthese with it |
| CN109567987A (en) * | 2019-02-01 | 2019-04-05 | 北京爱康宜诚医疗器材有限公司 | Single condyle knee-joint prosthesis |
| CN211156487U (en) * | 2019-09-17 | 2020-08-04 | 北京爱康宜诚医疗器材有限公司 | Unicondylar knee joint prosthesis |
-
2019
- 2019-09-17 CN CN201910877622.5A patent/CN110538010B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0194326A1 (en) * | 1983-09-23 | 1986-09-17 | orthoplant Endoprothetik GmbH | Knee-joint endoprosthesis |
| US5609643A (en) * | 1995-03-13 | 1997-03-11 | Johnson & Johnson Professional, Inc. | Knee joint prosthesis |
| US6443991B1 (en) * | 1998-09-21 | 2002-09-03 | Depuy Orthopaedics, Inc. | Posterior stabilized mobile bearing knee |
| US20060129246A1 (en) * | 2004-10-20 | 2006-06-15 | Zimmer Technology, Inc. | Mobile bearing unicondylar knee prosthesis |
| US20060235537A1 (en) * | 2005-04-18 | 2006-10-19 | Accin Corporation | Unicondylar knee implant |
| CN104507420A (en) * | 2012-04-19 | 2015-04-08 | 泰克尼梅德公司 | Spacer implant for the temporary replacement of knee prosthesis |
| CN106456334A (en) * | 2014-04-29 | 2017-02-22 | 阿斯卡拉波股份有限公司 | Knee-joint endoprosthesis |
| CN105105888A (en) * | 2015-09-28 | 2015-12-02 | 北京市春立正达医疗器械股份有限公司 | Fixed platform knee joint prosthesis |
| CN105640671A (en) * | 2016-03-03 | 2016-06-08 | 华中科技大学同济医学院附属同济医院 | Single-condyle artificial knee joint |
| CN107789099A (en) * | 2016-08-31 | 2018-03-13 | 嘉思特华剑医疗器材(天津)有限公司 | Retain bone amount simple joint displacement knee-joint prosthesis |
| CN107595443A (en) * | 2017-10-25 | 2018-01-19 | 北京安颂科技有限公司 | Split type lateral femoral condyle prosthesis and artificial knee joint |
| CN107898536A (en) * | 2017-11-09 | 2018-04-13 | 北京市春立正达医疗器械股份有限公司 | Knee-joint prosthesis |
| CN108095862A (en) * | 2017-12-22 | 2018-06-01 | 北京爱康宜诚医疗器材有限公司 | Single condyle prosthese |
| CN108392297A (en) * | 2018-04-10 | 2018-08-14 | 北京市春立正达医疗器械股份有限公司 | Single condyle knee-joint prosthesis |
| CN109528361A (en) * | 2018-12-17 | 2019-03-29 | 天衍医疗器材有限公司 | Femoral component and single condyle prosthese with it |
| CN109567987A (en) * | 2019-02-01 | 2019-04-05 | 北京爱康宜诚医疗器材有限公司 | Single condyle knee-joint prosthesis |
| CN211156487U (en) * | 2019-09-17 | 2020-08-04 | 北京爱康宜诚医疗器材有限公司 | Unicondylar knee joint prosthesis |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603278A (en) * | 2020-06-22 | 2020-09-01 | 北京爱康宜诚医疗器材有限公司 | Knee joint prosthesis |
| CN112674913A (en) * | 2021-01-14 | 2021-04-20 | 福州大学 | Unicondylar knee joint prosthesis capable of preventing looseness and working method thereof |
| CN113367854A (en) * | 2021-05-24 | 2021-09-10 | 北京纳通医疗科技控股有限公司 | Tibial tray prosthesis and knee joint prosthesis |
| CN113367854B (en) * | 2021-05-24 | 2023-08-01 | 北京纳通医疗科技控股有限公司 | Tibial tray prosthesis and knee joint prosthesis |
| CN113813007A (en) * | 2021-10-13 | 2021-12-21 | 山东大学齐鲁医院(青岛) | Angle-adjustable femoral punching device |
| CN113892999A (en) * | 2021-10-13 | 2022-01-07 | 山东大学齐鲁医院(青岛) | Thighbone perforating device |
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