CN201438977U - Artificial knee joint - Google Patents
Artificial knee joint Download PDFInfo
- Publication number
- CN201438977U CN201438977U CN2009201566656U CN200920156665U CN201438977U CN 201438977 U CN201438977 U CN 201438977U CN 2009201566656 U CN2009201566656 U CN 2009201566656U CN 200920156665 U CN200920156665 U CN 200920156665U CN 201438977 U CN201438977 U CN 201438977U
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- Prior art keywords
- knee joint
- artificial knee
- utility
- component
- model
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- 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
-
- 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
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- 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 utility model relates to an artificial knee joint, which is arranged at one end of a thighbone and one end of a shinbone and comprises a shinbone component and a thighbone component, wherein the shinbone component is arranged at the end of the shinbone and is provided with two arc-shaped concave surfaces, and the thighbone component is arranged at the end of the thighbone and is provided with two arc-shaped convex surfaces matched with the two arc-shaped concave surfaces. The shinbone component is provided with a protruded cylindrical pestle column element. The pestle column element is provided with a spherical top end part and a concave circumferential part. The thighbone component is provided with a cup element propped against the pestle column element. The cup element is provided with a first connecting surface and a second connecting surface, wherein the first connecting surface is in contact with the top end part and the second connecting surface leans against the one side of the circumferential part when the thighbone forms a maximum bending angle relative to the shinbone. Thereby, the stability of the artificial knee joint is increased, the moving angle of the artificial knee joint is closer to the moving range of the original knee joint and the patient can reach good kinestate.
Description
Technical field
This utility model relates to a kind of artificial knee joint, particularly relates to a kind of pestle post and structure of mortar cup butt utilized and reaches the artificial knee joint that tibia can relative femur be obtained big range of activity.
Background technology
Knee joint is the joint of human body maximum, bears most weight of human body and stress, but the more direct ability that influences people's walking freely also is one of joint of very easily wearing and tearing or degenerating.Usually cause reasons such as the impaired osteoarthritis more commonly of knee joint, gout, rheumatoid arthritis or external force wound; seriously often bring pain, be difficult to the condition of illness that the application of force is lost the normal activity ability for sufferer yet knee joint is impaired, can impose the medical procedure that total man worker's knee surgery is used as treating sufferer this moment usually.
Knee joint is between the Thigh bone and focile of human body, just be connected mutually with tibia one end and form by femur one end, and knee joint mainly leans on the surface that femur and tibia two ends join to have tissue compositions such as lubricated cartilage of buffering and capsule liquid exactly, wherein the loss of cartilage is exactly the main cause that causes arthropathy, therefore artificial knee joint operation meeting prunes tibia one end top layer to remove the tissue of damage, and one tibial component is set at the prune end on top layer of this tibia, in like manner pruned in femur one end top layer and a femur assembly is set, utilizing this tibial component to be harmonious with reaching with this distal femoral component is connected, wherein modal structure is that the end face at this tibial component is provided with the bent concave surface of two arcs and is being provided with a projection near the centre position, and the end face at this distal femoral component is provided with the bent convex surface of arc of the bent concave surface of this arc relatively, and between the cam of the bent convex surface of two arcs, structure forms the main framework of artificial knee joint by this.
The structure of above-mentioned existing known artificial knee joint can satisfy the demand of daily walking of sufferer and going up or down stairway, yet more insufficiently be, the mechanism of existing known artificial knee joint structure cam and projection is just played a role when being bent to a certain angle, so before this mechanism's interlock, the easy undesired ground slippage forward of femur.Moreover the mechanism design of this projection and this cam has also limited the generation that the tibia femur rotates to axial, makes difficult the making of sufferer cross one's legs, squat or the contour flexure operation of the appearance of squatting.
Because many restrictions of above-mentioned existing known artificial knee joint, therefore develop the improvement invention that many more approaching primary knee joint range of activity, wherein as United States Patent (USP) the 7th, 160, shown in No. 330 " the knee joint artifucial limb of an imitative primary motion of knee joint " (Emulating natural kneekinematics in a knee prosthesis), in order to make artificial knee joint be produced reasonably axially spinning movement when the bending, therefore utilize the bent concave surface of arc of this tibial component, with the recessed Qu Bianhua of the bent convex surface of the arc of this distal femoral component, guide this artificial knee joint when bending, to produce axially by this and rotate; Moreover as United States Patent (USP) the 7th, 326, shown in " high-performance knee joint artifucial limb " (Highperformance knee prostheses) of No. 252, more utilize the projection external form that changes this distal femoral component, make this femur projection present asymmetric structure, make artificial knee joint be produced the axial anglec of rotation of appropriateness when crooked, make us worker's knee joint and produce near normal kneed kinestate.
Though above-mentioned technology is made us the more axial rotation of tolerable appropriateness of worker's knee joint, yet can active scope compare a segment distance in addition with primary knee joint institute, though the artificial knee joint operation can be sufferer and solves the discomfort that kneed pathological changes is brought, but make that also the limb activity of sufferer is range limited simultaneously, can't compare with primary knee joint, therefore be still waiting a kind of more approaching primary knee joint range of activity and be under the prerequisite, can produce the enough axial rotation angles and the artificial knee joint of high flexibility with stability.
This shows that above-mentioned existing artificial knee joint obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of artificial knee joint of new structure, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
Main purpose of the present utility model is, overcome the disappearance that existing known artificial knee joint exists, and a kind of artificial knee joint of new structure is provided, technical problem to be solved is to make its structure to connect like pestle and mortar, and increase stability and range of activity, be very suitable for practicality.
The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.According to a kind of artificial knee joint that the utility model proposes, be arranged at the end that femur and tibia join, it includes one and is arranged at the tibial component of tibia end and has the bent concave surface of two arcs, one is arranged at the distal femoral component of femur end and has the arc song convex surface that is harmonious in the bent concave surface of this arc, described tibial component is provided with a protruding cylindrical pestle post element, this pestle post element has a top ends that is spherical convex surface, and one have the ring perimembranous of concave face, and this distal femoral component be provided with one with the mortar cup element of this pestle post element butt, this mortar cup element has first continuing surface that touches mutually with this top ends, and second continuing surface that when relative this tibia of this femur forms maximum bend angle, contacts at this ring perimembranous one side.
This utility model compared with prior art has tangible advantage and beneficial effect.By technique scheme, this utility model artificial knee joint has following advantage and beneficial effect at least:
1, this utility model cooperating by this columned pestle post element and this mortar cup element, make this tibial component relatively this distal femoral component have the bigger axial anglec of rotation, make artificial knee joint of the present utility model meet primary kneed activity point of view more.
2, structure of the present utility model makes plane that artificial knee joint bears pressure except bent concave surface of existing known arc and the bent convex surface of arc, can bear partial pressure by first continuing surface of this mortar cup element and the top ends place of connecting of this pestle post element more, disperse the pressure that artificial knee joint bore, significantly promote stability and ruggedness.
3, this utility model more is able on this first continuing surface and this second continuing surface that different angles are connected to different curvatures smoothly by this pestle post element, improve the stability of artificial knee joint in BENDING PROCESS, avoid existing known artificial knee joint under low angle of bend, the phenomenon of the undesired slippage forward of femur.
In sum, this utility model relates to a kind of artificial knee joint, in order to replacing damaged knee joint, be arranged at the end that femur and tibia join, it includes one and is arranged at the tibial component of tibia end and has the bent concave surface of two arcs, one is arranged at the distal femoral component of femur end and has the arc song convex surface that is harmonious in the bent concave surface of this arc, its characteristic is that this tibial component is provided with the pestle post element of a projection and is cylindric and has a top ends that is spherical convex surface, and one have the ring perimembranous of concave face, and this distal femoral component be provided with one with the mortar cup element of this pestle post element butt, this mortar cup element has first continuing surface that touches mutually with this top ends, and second continuing surface that when relative this tibia of this femur is high angle of bend, contacts at this ring perimembranous one side, above-mentionedly be basic framework of the present utility model, increase the stability of artificial knee joint by this, make us the more approaching primary kneed scope of worker's knee joint activity point of view, make sufferer reach good kinestate.This utility model has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of description, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is first decomposing schematic representation of the present utility model.
Fig. 2 is second decomposing schematic representation of the present utility model.
Fig. 3 A is the generalized section of this utility model first action.
Fig. 3 B is the generalized section of this utility model second action.
Fig. 4 is an enforcement illustration of the present utility model.
The specific embodiment
For further setting forth this utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its specific embodiment of artificial knee joint, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present utility model can clearly present in the detailed description of graphic preferred embodiment is consulted in following cooperation.Explanation by the specific embodiment, when can being to reach technological means that predetermined purpose takes and effect to obtain one more deeply and concrete understanding to this utility model, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for this utility model is limited.
See also Fig. 1, Fig. 2, Fig. 3 A, and shown in Figure 4, Fig. 1 is first decomposing schematic representation of the present utility model.Fig. 2 is second decomposing schematic representation of the present utility model.Fig. 3 A is the generalized section of this utility model first action.Fig. 4 is an enforcement illustration of the present utility model.Preferred embodiment of the present utility model has disclosed a kind of artificial knee joint, it mainly is arranged at the end that femur 100 and tibia 200 join, in order to replace the knee endoprosthesis that has damaged, it includes a tibial component 20 that is arranged at tibia 200 ends, an and distal femoral component 10 that is arranged at femur 100 ends, wherein this tibial component 20 has the bent concave surface 21 of two arcs, and this distal femoral component 10 has the arc song convex surface 11 that is harmonious in the bent concave surface 21 of this arc, wherein the bent convex surface 11 of this arc connects the state that is for touching mutually with the bent concave surface 21 of this arc under the normal state that uses of artificial knee joint, and maximum of the present utility model is characterised in that described tibial component 20 is provided with a protruding cylindrical pestle post element 22, this pestle post element 22 has a top ends 221 that is spherical convex surface as shown in the figure, and around this pestle post element 22 and have the ring perimembranous 222 of concave face, and this distal femoral component 10 be provided with one with the mortar cup element 12 of these pestle post element 22 butts, this 12 of mortar cup element has one first continuing surface 121 and one second continuing surface 122, wherein this first continuing surface 121 touches mutually in the top ends 221 of this pestle post element 22, this second continuing surface 122 contacts at ring perimembranous 222 1 sides of this pestle post element 22 when this femur 100 relative these tibias 200 form high angle of bend, above-mentionedly be basic framework of the present utility model.
For manner of execution of the present utility model can be described, please hold continuous foregoing, and see also shown in Fig. 3 A and Fig. 3 B, Fig. 3 B is the generalized section of this utility model second action, see also Fig. 4 simultaneously, can learn that wherein this distal femoral component 10 shown in Fig. 3 A and the connection status of this tibial component 20 are roughly under the co-axial state with this tibia 200 for this femur 100, that is the connection status of this distal femoral component shown in Fig. 3 A 10 and this tibial component 20 is under the human body state of standing, at this moment visible this distal femoral component 10 touches face mutually with this tibial component 20 and is the bent convex surface 11 of this arc and this arc song concave surface 21, and the top ends 221 of this first continuing surface 121 and this pestle post element 22, the contact surface of 20 of this distal femoral component 10 and this tibial components by this is increased, compare in the past by this utility model artificial knee joint has more ruggedness effectively to be dispersed in 20 interface pressures that produced of this distal femoral component 10 and this tibial component, to make; Please continue to consult shown in Fig. 3 B, state for the artificial knee joint slight bending, this moment, the top ends 221 of visible this pestle post element 22 was able to that one is successive by the action of bending smoothly continues to be connected to this second continuing surface 122 by this first continuing surface 121, when producing high bending as if artificial knee joint at last, can make this second continuing surface 122 contact at this ring perimembranous 222, this shows, stability was high when artificial knee joint of the present utility model was crooked, can further avoid existing known artificial knee joint femoral slippage forward, be had the most approaching primary kneed range of activity after making sufferer installing artificial knee joint.
Brought forward is stated all diagrams and content, wherein first continuing surface 121 of this mortar cup element 12 in order to top ends 221 butts of this pestle post element 22, and in diagram, this first continuing surface 121 cooperate these top ends 221 spherical protrusion external form and form spherical recess, by annexation so, make artificial knee joint of the present utility model when reality is used, these femur 100 relative these tibias 200 can obtain the mutually countershaft commentaries on classics scope of nature, break through the restriction that artificial knee joint structure in the past causes the Shaft angle degree, improve the bottleneck of existing known techniques.
The above, it only is preferred embodiment of the present utility model, be not that this utility model is done any pro forma restriction, though this utility model discloses as above with preferred embodiment, yet be not in order to limit this utility model, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (1)
1. artificial knee joint, be arranged at the end that femur (100) and tibia (200) join, it includes one and is arranged at the tibial component (20) of tibia (200) end and has the bent concave surface (21), of two arcs and be arranged at the distal femoral component (10) of femur (100) end and have and be harmonious in the bent convex surface (11) of the arc of the bent concave surface of this arc (21), it is characterized in that:
Described tibial component (20) is provided with a protruding cylindrical pestle post element (22), this pestle post element (22) has a top ends (221) and that is spherical convex surface and has the ring perimembranous (222) of concave face, and this distal femoral component (10) be provided with one with the mortar cup element (12) of this pestle post element (22) butt, second continuing surface (122) that this mortar cup element (12) has first continuing surface (121) that touches mutually with this top ends (221) and contact at these ring perimembranous (222) one sides when relative this tibia of this femur (100) (200) formation maximum bend angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201566656U CN201438977U (en) | 2009-06-12 | 2009-06-12 | Artificial knee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201566656U CN201438977U (en) | 2009-06-12 | 2009-06-12 | Artificial knee joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201438977U true CN201438977U (en) | 2010-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201566656U Expired - Fee Related CN201438977U (en) | 2009-06-12 | 2009-06-12 | Artificial knee joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201438977U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614036A (en) * | 2012-04-24 | 2012-08-01 | 北京纳通科技集团有限公司 | Knee joint prosthesis pad, shinbone base element and knee joint prosthesis |
| CN107661161A (en) * | 2016-07-28 | 2018-02-06 | 德普伊爱尔兰无限公司 | Total knee implants prosthesis assembly and method |
| CN110944602A (en) * | 2017-07-28 | 2020-03-31 | 主动式植入有限责任公司 | Floating joint replacement device with supporting side walls |
-
2009
- 2009-06-12 CN CN2009201566656U patent/CN201438977U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614036A (en) * | 2012-04-24 | 2012-08-01 | 北京纳通科技集团有限公司 | Knee joint prosthesis pad, shinbone base element and knee joint prosthesis |
| CN102614036B (en) * | 2012-04-24 | 2014-10-29 | 北京纳通科技集团有限公司 | Knee joint prosthesis pad, shinbone base element and knee joint prosthesis |
| CN107661161A (en) * | 2016-07-28 | 2018-02-06 | 德普伊爱尔兰无限公司 | Total knee implants prosthesis assembly and method |
| CN107661161B (en) * | 2016-07-28 | 2021-06-08 | 德普伊爱尔兰无限公司 | Total knee implant prosthesis assembly and method |
| US11382756B2 (en) | 2016-07-28 | 2022-07-12 | Depuy Ireland Unlimited Company | Total knee implant prosthesis assembly and method |
| CN110944602A (en) * | 2017-07-28 | 2020-03-31 | 主动式植入有限责任公司 | Floating joint replacement device with supporting side walls |
| CN110944602B (en) * | 2017-07-28 | 2022-04-01 | 主动式植入有限责任公司 | Floating joint replacement device with supporting side walls |
| US11491017B2 (en) | 2017-07-28 | 2022-11-08 | Active Implants LLC | Floating joint replacement device with supportive sidewall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FARMA TECHNOLOGY CONSULTING CO., LTD. Free format text: FORMER OWNER: ZHENG CHENGGONG Effective date: 20110803 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110803 Address after: No. 14, building 161, 1 public welfare Road, Taichung City, Taiwan, China Patentee after: Fama Technology Consulting Co., Ltd. Address before: Taipei City, Taiwan, China Patentee before: Zheng Chenggong |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20150612 |
|
| EXPY | Termination of patent right or utility model |