CN201404314Y - Orthopaedic implant structure improvement - Google Patents
Orthopaedic implant structure improvement Download PDFInfo
- Publication number
- CN201404314Y CN201404314Y CN 200920005650 CN200920005650U CN201404314Y CN 201404314 Y CN201404314 Y CN 201404314Y CN 200920005650 CN200920005650 CN 200920005650 CN 200920005650 U CN200920005650 U CN 200920005650U CN 201404314 Y CN201404314 Y CN 201404314Y
- Authority
- CN
- China
- Prior art keywords
- tibial
- face liner
- reinforcement
- tibial prosthesis
- prosthesis face
- 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.)
- Expired - Lifetime
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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 orthopaedic implant structure improvement, which comprises a tibial baseplate, a tibial articular surface pad and a stiffener. The tibial baseplate is provided with a recess, the center of the bottom of the recess is provided with a through hole which penetrates the tibial baseplate, and the upper edge of the through hole is outwardly extended to form a groove; a projection which corresponds to the recess of the tibial baseplate is formed on the bottom of the tibial articular surface pad, so that the tibial articular surface pad can be pressed to fasten with thetibial baseplate, the center of the upper side of the tibial articular surface pad is provided with a post, the post is provided with a through hole which penetrates the tibial articular surface pad,and the tibial articular surface pad is provided with two curved surfaces for rolling contact at both sides of the posts; the stiffener is arranged in the tibial articular surface pad, and a bush anda screw are assembled together to form the stiffener. Consequently, the utility model has the advantages of steady combination, external force resistance, deformation resistance, longer service life,higher operation efficiency, safe and convenient use and lower cost.
Description
Technical field
This utility model relates to a kind of orthopaedics implant structural improvement, be meant a kind of particular design especially by a reinforcement, increasing tibial prosthesis face liner combines with tibial base is firm, having opposing external force, to prevent the effectiveness of being out of shape and increasing the service life, and be applicable to the serious or secondary artificial knee replacement surgery of skeleton corrupted.
Background technology
Along with age increases, people's pass festival-gathering is because degenerate or life-time service causes wearing and tearing or degenerates, thereby produces pain and maybe can't provide good motor function, and then influences activities of daily living.When arthropathy is serious, can removes pain and promote function of joint by the artificial knee replacement surgery.Artificial knee joint comprises the element that metal or plastic material are made usually, its can with bone fixation, replace original knee joint, make it recover normal function.
The artificial knee replacement surgery is that the treatment knee joint is degenerated or the common modus operandi of pathological changes.Typical artificial knee joint element comprises femur end implant, tibial base, tibial prosthesis face liner and patella implant.Tibial base is to be fixed on patient's tibial prosthesis face, and tibial prosthesis face liner then combines with tibial base by the mechanics combination.Between kneed stable and femur end implant-tibial prosthesis face liner, and the design between tibial prosthesis face liner-tibial base is closely bound up.The pillar of tibial prosthesis face liner top can limit the activity between femur end implant and tibial prosthesis face liner, but it is made by plastic material usually, can produce destructive phenomenon because resist external force for a long time.When being engaged in activities of daily living, act on artificial knee joint, particularly load and the shearing on the tibial prosthesis face liner can cause the displacement between tibial prosthesis face liner and tibial base, and tibial prosthesis face liner is separated with tibial base.Therefore, tibial prosthesis face liner top pillar has enough mechanical strengths, and the good binding mode is important and necessary between tibial prosthesis face liner and tibial base.
Inserting L type reinforcement in tibial prosthesis face liner is to increase the common mode of tibial prosthesis face liner top pillar mechanical strength, owing to insert metal object in the pillar of tibial prosthesis face liner top, can increase the mechanical strength of its external force resistance, but this design only can increase stablizing between tibial prosthesis face liner and femur implant.The common mode of bonded technology is to use the screw closure two elements between tibial prosthesis face liner and tibial base, and this mode only can increase both adhesions, can not increase the ability of its opposing shearing.In addition, screw separates with tibial prosthesis face liner, and the design of just making up during use more reduces operation efficient.
So, designing good artificial knee joint should have: necessity is stable in the time of one, can providing the knee joint activity, reduce unnecessary action or joint dislocation phenomenon, two, provide enough intensity with opposing external force, three, can avoid implant to produce excessive abrasive phenomenon, prolonging implant service life, four, can improve operation efficient, save operating time.
Edge is, this utility model people improves thoughts on the problems referred to above, is concentrate on studies and cooperate the utilization of scientific principle, and then proposes a kind of reasonable in design and effectively improve this utility model of the problems referred to above.
The utility model content
Main purpose of the present utility model, be to provide a kind of orthopaedics implant structural improvement, be arranged in the tibial prosthesis face liner by a reinforcement, and the screw of this reinforcement is a sealed bone handle or bone handle eccentric part downwards, the lining of interlock reinforcement exposes the groove of tibial prosthesis face liner below and chimeric tibial base simultaneously, having firm combination, opposing external force, to prevent the effectiveness of being out of shape and increasing the service life, and then increase practicality of the present utility model and progressive.
An of the present utility model purpose, be to provide a kind of orthopaedics implant structural improvement, directly be equipped on by reinforcement in the perforation of tibial prosthesis face liner, and this perforation is up-narrow and down-wide shape, the lining outer rim of this reinforcement is provided with the particular design of screw thread or matsurface again, improve perform the operation efficient, safe in utilization and firm bonded effectiveness to have, and then increase progressive of the present utility model and safety.
Another purpose of the present utility model, be to provide a kind of orthopaedics implant structural improvement, modularized design by each element, and be applicable to the individuality of diversity, but and local replacing, having effectiveness easy to use and that reduce cost, and then increase practicality of the present utility model and convenience.
For reaching above-mentioned purpose, orthopaedics implant structural improvement of the present utility model is to comprise a tibial base, a tibial prosthesis face liner and a reinforcement.This tibial base has a recess, and these recess bottom surface central authorities are provided with a through hole that runs through tibial base, and this through hole upper limb stretches out and forms a groove, and a side of recess is provided with a catching groove; The recess of this corresponding tibial base in tibial prosthesis face liner bottom is formed with a protuberance, be fastened on the tibial base with compressing, and a side of this protuberance is provided with a fastener, this fastener is to be snapped in the catching groove of tibial base, and tibial prosthesis face liner top center is provided with a pillar, this pillar is provided with a perforation that runs through tibial prosthesis face liner, and this tibial prosthesis face liner has two curved surfaces in the pillar both sides again, for touch scrolling; This reinforcement is to be arranged in the tibial prosthesis face liner, and this reinforcement is to be combined by a lining and a screw, wherein, this lining is to be embedded in the perforation of tibial prosthesis face liner, and have a trepanning in this lining, this trepanning bottom is provided with a stopper section, after causing this screw and inserting in the lining, the spiral shell body exposes trepanning, is butted on the stopper section and screw terminal is suitable.
Thus, orthopaedics implant structural improvement of the present utility model, make have firm combination, the opposing stress, prevent to be out of shape, to increase the service life and effectiveness safe in utilization, really have practicality, progressive, safety and convenience.
Description of drawings
In order further to understand feature of the present utility model, characteristics and technology contents, see also following about detailed description of the present utility model and accompanying drawing, only accompanying drawing only provide with reference to and explanation usefulness, non-in order to restriction this utility model, wherein:
Fig. 1 is the axonometric chart of this utility model embodiment.
Fig. 2 is the element exploded view of this utility model embodiment.
Fig. 3 is the partial cutaway schematic of this utility model embodiment.
Fig. 4 is the combination sketch map of this utility model embodiment.
Fig. 5 is the user mode sketch map of this utility model embodiment.
The specific embodiment
See also Fig. 1～shown in Figure 3, be axonometric chart, element exploded view and the generalized section of this utility model embodiment.This orthopaedics implant structural improvement is to comprise: a tibial base 1, a tibial prosthesis face liner 2 and a reinforcement 3.
This tibial base, it is modularized design with multiple size, it has a recess 11, these recess 11 bottom surface central authorities are provided with a through hole 12 that runs through tibial base 1, these through hole 12 upper limbs are to stretch out to form a groove 13, and these through hole 12 belows are to engage a bone handle 4 (seeing also Fig. 5) or bone handle eccentric part (figure does not show), and this through hole 12 is to adopt Morse tapering (Morse Taper) with the angle design of an end of bone handle 4 or bone handle eccentric part, and a side of recess 11 is provided with a catching groove 14, for the buckle combination.
This tibial prosthesis face liner 2, it is modularized design with multiple size, the recess 11 that its bottom is corresponding tibial base 1 is formed with a protuberance 21, and (side of tibial base 1 recess 11 of present embodiment forms the dovetail arc-curved shape, so a side of this protuberance 21 also forms the dovetail arc-curved shape relatively), be fastened on the tibial base 1 with compressing, and a side of this protuberance 21 is provided with a fastener 22, this fastener 22 is to be snapped in the catching groove 14 of tibial base 1, and tibial prosthesis face liner 2 top center are provided with a pillar 23, in order to be stretched on one bone implant 5 (seeing also Fig. 5), form femur implant 5 start relatively on tibial prosthesis face liner 2, and this pillar 23 is provided with a perforation 24 that runs through tibial prosthesis face liner 2, this perforation 24 is to be up-narrow and down-wide shape, this tibial prosthesis face liner 2 has two curved surfaces 25 in pillar 23 both sides again, 26 (these two curved surfaces 25,26 surfaces are to be slick and sly cambered surface, to reduce the abrasion of stress concentration and tibial prosthesis face liner 2), 5 contacts of femur implant to be provided and to roll.
This reinforcement 3, be to be arranged in the tibial prosthesis face liner 2, and this reinforcement 3 is to be combined by a lining 31 and a screw 32, wherein, this lining 31 is to be embedded in that (lining 31 outer rims of present embodiment are to be provided with screw thread or matsurface (figure does not show) in the perforation 24 of tibial prosthesis face liner 2, to increase the fastening of 2 of this lining 31 and tibial prosthesis face liners), and has a trepanning 311 in this lining 31, these trepanning 311 bottoms are provided with a stopper section 312, after causing this screw 32 and inserting in the lining 31, spiral shell body 322 exposes trepanning 311, are butted on the stopper section 312 and screw terminal 321 is suitable, and because perforation 24 is to be up-narrow and down-wide shape, so in case screw 32 get loose or rupture, and be unlikely and drop out outside the tibial prosthesis face liner 2, and cause danger or infect.
During use, see also Fig. 4～shown in Figure 5, combination sketch map and user mode sketch map for this utility model embodiment, tibial prosthesis face liner 2 compressing is incorporated on the tibial base 1 (after tibial prosthesis face liner 2 molding of present embodiment, reinforcement 3 has been embedded in this tibial prosthesis face liner 2), because the protuberance 21 of tibial prosthesis face liner 2 is mutual corresponding molding with the recess 11 of tibial base 1, and be able to closely fasten mutually apace, a side fastener 22 of tibial prosthesis face liner 2 is snapped in the catching groove 14 of tibial base 1 in addition, more increasing tibial prosthesis face liner 2 combines with the firm of tibial base 1, and prevent to get loose, improve the safety on using, moreover, (present embodiment is a bone handle 4 to connect a bone handle 4 in through hole 12 belows of tibial base 1, also can be bone handle eccentric part during actual the use), this through hole 12 is to adopt Morse tapering (Morse Taper) with the angle design of an end of bone handle 4, so have the detachable mounted characteristic, and an end of bone handle 4 is established a combined hole (figure does not show) in being, this combined hole has female thread, screw 32 for combined hole and reinforcement 3 is mutually locked, utilize instrument (as: screwdriver) to insert in the lining 31 that is provided with in the perforation 24 of tibial prosthesis face liner 2, rotation Locking screw 32 and bone handle 4, drive this lining 31 simultaneously and expose tibial prosthesis face liner 2 one ends, and the groove 13 of chimeric tibial base 1, to increase both abilities in conjunction with the back shearing resistance, the person of advancing, tibial prosthesis face liner 2 top center are provided with a pillar 23 to be stretched in one bone implant 5, form the curved surface 25 of this femur implant 5 and tibial prosthesis face liner 2,26 contacts and rolling, because the curved surface 25 of tibial prosthesis face liner 2,26 surfaces are slick and sly cambered surface, so this femur implant 5 is in the curved surface 25 of tibial prosthesis face liner 2, the smooth and easy bending of knee joint can be provided during 26 rollings and stretch motion, and the abrasion of reduction stress concentration and tibial prosthesis face liner 2, and the reinforcement of establishing in the tibial prosthesis face liner 2 of the present utility model 3 (being to combine by a lining 31 and a screw 32), its role is to strengthen tibial prosthesis face liner 2,5 starts of opposing femur implant result from the stress on the tibial prosthesis face liner 2, and not induced damage resistive and distortion, increase the service life effectively, and the screw 32 of reinforcement 3 is sealed with bone handle 4, drive lining 31 chimeric grooves 13, and then the ability of increase opposing shearing, in addition, in case the screw 32 of reinforcement 3 gets loose or ruptures, because the particular design of perforation 24 (sees also Fig. 3, perforation 24 is to be up-narrow and down-wide shape), screw 32 is unlikely and drops out outside the tibial prosthesis face liner 2, and cause danger or infect, also take into account the safety in the use, and reinforcement 3 directly is equipped on the design of this tibial prosthesis face liner 2, can improve operation efficient.
The structure improved characteristics of orthopaedics implant of the present utility model are: be arranged in the liner 2 by a reinforcement 3, and screw 32 a downward sealed bone handle 4 or bone handle 4 eccentric parts of this reinforcement 3, the lining 31 of interlock reinforcement 3 exposes the groove of tibial prosthesis face liner 2 belows and chimeric tibial base 1 simultaneously, having firm combination, opposing external force, to prevent the effectiveness of being out of shape and increasing the service life, and then increase practicality of the present utility model and progressive; And directly be equipped on by reinforcement 3 in the perforation 24 of liner 2, and this perforation 24 is up-narrow and down-wide shape, lining 31 outer rims of this reinforcement 3 are provided with the particular design of screw thread or matsurface again, improve perform the operation efficient, safe in utilization and firm bonded effectiveness to have, and then increase progressive of the present utility model and safety; Again by the modularized design of each element, and be applicable to the individuality of diversity, but and local replacing, having effectiveness easy to use and that reduce cost, and then increase practicality of the present utility model and convenience.As previously discussed, orthopaedics implant structural improvement of the present utility model really has practicality, progressive, safety and convenience.
The above only is a preferable possible embodiments of the present utility model, non-so promptly limit to claim of the present utility model, the equivalent structure that every utilization this utility model description and accompanying drawing content are done changes, and all reason is with being contained in the claim scope of the present utility model.
Claims (7)
1, a kind of orthopaedics implant structural improvement is characterized in that, comprising:
One tibial base, this tibial base has a recess, and these recess bottom surface central authorities are provided with a through hole that runs through tibial base, and this through hole upper limb stretches out and forms a groove, and a side of recess is provided with a catching groove;
One tibial prosthesis face liner, the recess of this corresponding tibial base in tibial prosthesis face liner bottom is formed with a protuberance, be fastened on the tibial base with compressing, and a side of this protuberance is provided with a fastener, this fastener is snapped in the catching groove of tibial base, and tibial prosthesis face liner top center is provided with a pillar, and this pillar is provided with a perforation that runs through tibial prosthesis face liner, and this tibial prosthesis face liner has two curved surfaces for touch scrollings in the pillar both sides again; And
One reinforcement, this reinforcement is arranged in the tibial prosthesis face liner, and this reinforcement is combined by a lining and a screw, wherein, this lining is embedded in the perforation of tibial prosthesis face liner, and has a trepanning in this lining, this trepanning bottom is provided with a stopper section, after causing this screw and inserting in the lining, the spiral shell body exposes trepanning, is butted on the stopper section and screw terminal is suitable.
2, orthopaedics implant structural improvement as claimed in claim 1 is characterized in that, wherein this tibial base connects a bone handle or bone handle eccentric part, and an end of this bone handle or bone handle eccentric part is socketed in the through hole of this tibial base.
3, orthopaedics implant structural improvement as claimed in claim 2 is characterized in that, wherein establishes a combined hole in the end of this bone handle or bone handle eccentric part, and this combined hole has the female thread that the screw for combined hole and reinforcement is mutually locked.
4, orthopaedics implant structural improvement as claimed in claim 3 is characterized in that, wherein the screw closure bone handle of this reinforcement or bone handle eccentric part, and the lining of this reinforcement of interlock exposes the groove of tibial prosthesis face liner one end and chimeric tibial base.
5, orthopaedics implant structural improvement as claimed in claim 1 is characterized in that, wherein the lining outer rim of this reinforcement is provided with increases fastening screw thread or matsurface between this lining and tibial prosthesis face liner.
6, orthopaedics implant structural improvement as claimed in claim 1 is characterized in that, wherein the perforation of this tibial prosthesis face liner is the up-narrow and down-wide shape of avoiding the reinforcement screw to fall.
7, orthopaedics implant structural improvement as claimed in claim 1 is characterized in that, wherein this reinforcement directly is equipped in the tibial prosthesis face liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920005650 CN201404314Y (en) | 2009-04-09 | 2009-04-09 | Orthopaedic implant structure improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920005650 CN201404314Y (en) | 2009-04-09 | 2009-04-09 | Orthopaedic implant structure improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201404314Y true CN201404314Y (en) | 2010-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920005650 Expired - Lifetime CN201404314Y (en) | 2009-04-09 | 2009-04-09 | Orthopaedic implant structure improvement |
Country Status (1)
| Country | Link |
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| CN (1) | CN201404314Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102793594A (en) * | 2012-08-18 | 2012-11-28 | 深圳清华大学研究院 | Artificial knee joint |
| WO2013071872A1 (en) * | 2011-11-18 | 2013-05-23 | 北京纳通科技集团有限公司 | Knee joint prosthesis |
| CN103705319A (en) * | 2013-12-27 | 2014-04-09 | 北京爱康宜诚医疗器材股份有限公司 | Biological fixation type tibia platform |
| CN104758137A (en) * | 2015-03-23 | 2015-07-08 | 北京市春立正达医疗器械股份有限公司 | Mobile-bearing prosthesis of knee joint |
| CN105982766A (en) * | 2015-02-25 | 2016-10-05 | 北京纳通科技集团有限公司 | Knee joint prosthesis with filling block |
| CN108420571A (en) * | 2018-02-28 | 2018-08-21 | 嘉思特华剑医疗器材(天津)有限公司 | A kind of multi-purpose type posterior cruciate ligament of knee conservative condyle of femur column reinforcement cushion block |
-
2009
- 2009-04-09 CN CN 200920005650 patent/CN201404314Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013071872A1 (en) * | 2011-11-18 | 2013-05-23 | 北京纳通科技集团有限公司 | Knee joint prosthesis |
| CN103120606A (en) * | 2011-11-18 | 2013-05-29 | 北京纳通科技集团有限公司 | Knee-joint prosthesis |
| CN103120606B (en) * | 2011-11-18 | 2015-03-18 | 北京纳通科技集团有限公司 | Knee-joint prosthesis |
| CN102793594A (en) * | 2012-08-18 | 2012-11-28 | 深圳清华大学研究院 | Artificial knee joint |
| CN102793594B (en) * | 2012-08-18 | 2015-11-18 | 深圳清华大学研究院 | A kind of artificial knee joint |
| CN103705319A (en) * | 2013-12-27 | 2014-04-09 | 北京爱康宜诚医疗器材股份有限公司 | Biological fixation type tibia platform |
| CN105982766A (en) * | 2015-02-25 | 2016-10-05 | 北京纳通科技集团有限公司 | Knee joint prosthesis with filling block |
| CN104758137A (en) * | 2015-03-23 | 2015-07-08 | 北京市春立正达医疗器械股份有限公司 | Mobile-bearing prosthesis of knee joint |
| CN108420571A (en) * | 2018-02-28 | 2018-08-21 | 嘉思特华剑医疗器材(天津)有限公司 | A kind of multi-purpose type posterior cruciate ligament of knee conservative condyle of femur column reinforcement cushion block |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100217 |
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| CX01 | Expiry of patent term |