CN216221879U - Novel artificial ankle joint - Google Patents
Novel artificial ankle joint Download PDFInfo
- Publication number
- CN216221879U CN216221879U CN202123073987.4U CN202123073987U CN216221879U CN 216221879 U CN216221879 U CN 216221879U CN 202123073987 U CN202123073987 U CN 202123073987U CN 216221879 U CN216221879 U CN 216221879U
- Authority
- CN
- China
- Prior art keywords
- joint
- ankle joint
- tibia
- artificial ankle
- convex
- 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
Images
Abstract
The utility model discloses a novel artificial ankle joint, which comprises a universal joint shaft, wherein the universal joint shaft comprises a tibia end connecting surface and a talus end connecting surface; the middle part of the tibia end connecting surface is sunken towards the proximal end to form a spherical concave part, and a convex part which is convex towards the concave part is arranged on the far end edge of the concave part; the middle part of the bone end connecting surface protrudes towards the near end to form a spherical convex body, and the far end of the convex body narrows towards the central shaft part to form a concave neck. The utility model provides an artificial ankle joint capable of moving universally, which is not limited to unidirectional movement in the front and back directions in the prior art, can also realize movement in the left and right directions, the left front direction, the right front direction, the left back direction, the right back direction and the like in an oblique direction, furthest restores the function of a real ankle joint, and an added artificial cartilage wear-resistant layer has the functions of wear resistance and shock absorption, and is matched with a buffer device to ensure that the artificial ankle joint has the functions of buffering and shock absorption, thereby improving the functionality of the artificial ankle joint.
Description
Technical Field
The utility model relates to the field of artificial joints, in particular to a novel artificial ankle joint.
Background
In the medical field, the replacement of a diseased or injured articular surface of the ankle joint with a prosthetic component may allow the patient to resume normal motion. A typical artificial ankle joint comprises a tibial component implanted in the tibia of a patient and a talar component implanted in the talus of a patient, and in addition, a bearing insert may be provided between the tibial and talar components. However, the artificial ankle joint of the prior art is fixed and cannot rotate, or has a degree of freedom which can only be plantarflexed or dorsiflexed to a limited extent. These ankle joints are only suitable for walking on relatively flat ground. When the road surface is not level, these ankle joints can lead to the patient to walk the appearance unnatural or walk unstably because can't realize turning inside and turning outside to also there is not buffer, the comfort level is poor, the security is poor.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the technology, the utility model provides a novel artificial ankle joint.
In order to solve the technical problems, the technical scheme adopted by the utility model is a novel artificial ankle joint which comprises a universal joint shaft, wherein the universal joint shaft comprises a tibia end connecting surface and a talus end connecting surface; the middle part of the tibia end connecting surface is sunken towards the proximal end to form a spherical concave part, and a convex part which is convex towards the concave part is arranged on the far end edge of the concave part;
the middle part of the bone end connecting surface protrudes towards the near end to form a spherical convex body, and the far end of the convex body narrows towards the central shaft part to form a concave neck; the convex body away from the bone end connecting surface is positioned in the concave part of the tibia end connecting surface, the shape of the convex body is matched with that of the concave part, and the convex body can universally slide relative to the concave part; the surface shape of the concave neck is matched with that of the convex part;
the surface of the near end of the convex body is covered with a wear-resistant layer; the surface of the concave part is provided with a plurality of accommodating cavities, and joint lubricating liquid is filled in the accommodating cavities;
the proximal end of the tibia end articular surface is provided with a buffer device, the buffer device comprises an upper buffer plate and a lower buffer plate, and a buffer body is clamped between the upper buffer plate and the lower buffer plate.
Furthermore, a tibia end contact plate is arranged between the tibia end joint surface and the buffer device, and the tibia end contact plate is connected with the tibia end joint surface through threads.
Furthermore, an implant is fixed at the proximal end of the buffer device, the implant is in a hollow cylinder shape, and the surface of the implant is provided with an opening.
Furthermore, the far end of the talus end joint surface is fixedly connected with a talus end joint plate, and a plurality of screw holes are formed in the talus end joint plate.
Further, the distal end of talus end joint board is fixed with left connecting portion and right connecting portion, has all seted up the fixed orifices on left connecting portion and the right connecting portion, is provided with the interlocking screw in the fixed orifices.
Furthermore, the material of wearing layer is artificial cartilage.
Further, the inside of the buffer body is filled with a buffer material.
The utility model provides an artificial ankle joint capable of moving universally, which is not limited to unidirectional movement in the front and back directions in the prior art, can also realize movement in the left and right directions, the left front direction, the right front direction, the left back direction, the right back direction and the like in an oblique direction, furthest restores the function of a real ankle joint, and an added artificial cartilage wear-resistant layer has the functions of wear resistance and shock absorption, and is matched with a buffer device to ensure that the artificial ankle joint has the functions of buffering and shock absorption, thereby improving the functionality of the artificial ankle joint.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a tibial end connection surface; 2. a talar end joint face; 3. a recess; 4. a convex portion; 5. a wear layer; 6. an upper buffer plate; 7. a lower buffer plate; 8. a buffer body; 9. a tibial end contact pad; 10. an implant; 11. opening a hole; 12. a talar end joint plate; 13. a screw hole; 14. a left connecting portion; 15. a right connecting portion; 16. the screws are interlocked.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 shows a novel artificial ankle joint, which comprises a universal joint shaft, wherein the universal joint shaft comprises a tibia end connecting surface 1 and a talus end connecting surface 2; the middle part of the tibia end connecting surface is sunken towards the proximal end to form a spherical concave part 3, and a convex part 4 which is convex towards the concave part is arranged at the far end edge of the concave part;
the middle part of the bone end connecting surface protrudes towards the near end to form a spherical convex body, and the far end of the convex body narrows towards the central shaft part to form a concave neck; the convex body away from the bone end connecting surface is positioned in the concave part of the tibia end connecting surface, the shape of the convex body is matched with that of the concave part, and the convex body can universally slide relative to the concave part; the surface shape of the concave neck is matched with that of the convex part; the convex body and the concave part are both spherical, so the convex body can move universally in the concave part, and in addition, the convex part and the concave neck are matched to clamp the expanded convex body in the concave part, so that the convex body and the concave part are combined more tightly.
The surface of the near end of the convex body is covered with a wear-resistant layer 5, the wear-resistant layer is made of artificial cartilage, the function of the wear-resistant layer is similar to that of a cartilage layer of a real joint, and the wear-resistant and shock-absorbing effects are achieved on the joint. The surface of concave part has been seted up a plurality of and has been held the chamber, holds the intracavity and is filled with joint lubricating liquid, and joint lubricating liquid can be artificial hyaluronic acid, plays the lubrication action between convex body and the concave part in the use of joint.
The proximal end of the tibia end articular surface is provided with a buffer device, the buffer device comprises an upper buffer plate 6 and a lower buffer plate 7, a buffer body 8 is clamped between the upper buffer plate and the lower buffer plate, and a buffer material such as a spring, an elastic steel sheet or other medical flexible materials (medical biological silica gel or ultrahigh molecular polyethylene and the like) is filled in the buffer body. The buffer device can reduce collision and stress conduction and reduce motion load.
Be provided with shin bone end touch pad 9 between shin bone end articular surface and the buffer, shin bone end touch pad and shin bone end articular surface meet through the screw thread, make shin bone end articular surface have detachable function, the change of being convenient for in the future.
An implant 10 is fixed at the proximal end of the buffer device, the implant is in a hollow cylinder shape, and an opening 11 is formed in the surface of the implant. The implant is used for being implanted into a human tibia, and the opening hole can facilitate metabolic growth between bone tissues.
The far end of the talus end joint surface is fixedly connected with a talus end joint plate 12 which is used for fixedly connecting talus, and a plurality of screw holes 13 are formed in the talus end joint plate. The far end apart from bone end joint plate is fixed with left connecting portion 14 and right connecting portion 15, has all seted up the fixed orifices on left connecting portion and the right connecting portion, all can be provided with interlocking screw 16 in screw 13 and the fixed orifices. Screw on the talus end joint board can be fixed with talus skeleton from the terminal surface, and left connecting portion and right connecting portion can follow the nail down of the side of talus, are fixed mutually with talus skeleton.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (7)
1. A novel artificial ankle joint is characterized in that: the joint comprises a universal joint shaft, wherein the universal joint shaft comprises a tibia end connecting surface (1) and a talus end connecting surface (2); the middle part of the tibia end connecting surface is sunken towards the proximal end to form a spherical concave part (3), and a convex part (4) which is convex towards the concave part is arranged on the far end edge of the concave part;
the middle part of the bone end connecting surface protrudes towards the near end to form a spherical convex body, and the far end of the convex body narrows towards the central shaft part to form a concave neck; the convex body away from the bone end connecting surface is positioned in the concave part of the tibia end connecting surface, the shape of the convex body is matched with that of the concave part, and the convex body can universally slide relative to the concave part; the surface shape of the concave neck is matched with that of the convex part;
the surface of the near end of the convex body is covered with a wear-resistant layer (5); the surface of the concave part is provided with a plurality of accommodating cavities, and joint lubricating liquid is filled in the accommodating cavities;
the proximal end of the tibia end articular surface is provided with a buffer device, the buffer device comprises an upper buffer plate (6) and a lower buffer plate (7), and a buffer body (8) is clamped between the upper buffer plate and the lower buffer plate.
2. The novel artificial ankle joint according to claim 1, wherein: a tibia end contact plate (9) is arranged between the tibia end joint surface and the buffer device, and the tibia end contact plate is connected with the tibia end joint surface through threads.
3. The novel artificial ankle joint according to claim 2, wherein: an implant (10) is fixed at the near end of the buffer device, the implant is in a hollow cylinder shape, and the surface of the implant is provided with an opening (11).
4. The novel artificial ankle joint according to claim 1 or 3, wherein: the far end of the talus end joint surface is fixedly connected with a talus end joint plate (12), and a plurality of screw holes (13) are formed in the talus end joint plate.
5. The novel artificial ankle joint according to claim 4, wherein: the far end of the calcar end joint plate is fixed with a left connecting part (14) and a right connecting part (15), fixing holes are formed in the left connecting part and the right connecting part, and interlocking screws (16) are arranged in the fixing holes.
6. The novel artificial ankle joint according to claim 3 or 5, wherein: the wear-resistant layer is made of artificial cartilage.
7. The novel artificial ankle joint according to claim 6, wherein: the inside of the buffer body is filled with a buffer material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123073987.4U CN216221879U (en) | 2021-12-09 | 2021-12-09 | Novel artificial ankle joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123073987.4U CN216221879U (en) | 2021-12-09 | 2021-12-09 | Novel artificial ankle joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216221879U true CN216221879U (en) | 2022-04-08 |
Family
ID=80961762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123073987.4U Active CN216221879U (en) | 2021-12-09 | 2021-12-09 | Novel artificial ankle joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216221879U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023212133A1 (en) * | 2022-04-27 | 2023-11-02 | Hamid Kamran Syed | Prosthesis, and associated methods of implanting a joint replacement and implanting a prosthetic bone joint replacement as for ankle replacement with press-fit tibia component, spherical articulation and method of implantation |
-
2021
- 2021-12-09 CN CN202123073987.4U patent/CN216221879U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023212133A1 (en) * | 2022-04-27 | 2023-11-02 | Hamid Kamran Syed | Prosthesis, and associated methods of implanting a joint replacement and implanting a prosthetic bone joint replacement as for ankle replacement with press-fit tibia component, spherical articulation and method of implantation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5462563A (en) | Orthopaedic implant | |
| CA2343206C (en) | Elbow prosthesis | |
| EP0546726B1 (en) | Prosthetic knee joint | |
| US4172296A (en) | Bicentric joint prosthesis | |
| EP0049298B1 (en) | Joint prosthesis | |
| US20080033567A1 (en) | Knee joint prosthesis used in total knee arthroplasty | |
| CN203852452U (en) | Stable pad type arthroplasty knee joint | |
| US20100145464A1 (en) | Device and method for force management within a joint | |
| CN101653387B (en) | Force-closed knee replacement prosthesis | |
| CN216221879U (en) | Novel artificial ankle joint | |
| EP2451389A1 (en) | Hip joint device | |
| CN105193523A (en) | Ankle joint implant | |
| AU2020247288A1 (en) | Bone joint implants | |
| CN105496612B (en) | A kind of finger joint prosthesis | |
| US20140114428A1 (en) | Metacarpal-phalangeal prosthesis | |
| US10799365B1 (en) | Bone joint implants | |
| EP2719359A1 (en) | Prosthesis | |
| JP2018504224A (en) | Total knee prosthesis with movable ceramic plate forming ceramic-on-ceramic friction joint | |
| CN216417428U (en) | Finger joint prosthesis | |
| CN204971716U (en) | Artifical ankle joint | |
| US5776203A (en) | Metatarsal phalangeal sesamoid prosthetic joint | |
| Sonstegard et al. | The surgical replacement of the human knee joint | |
| CN109464226B (en) | Silicon nitride ceramic artificial knee joint | |
| CN104887359A (en) | Artificial ankle joint | |
| CN209678765U (en) | Ankle prosthesis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |