CN209172591U - Diversification knee joint tibial platform pads prosthese - Google Patents
Diversification knee joint tibial platform pads prosthese Download PDFInfo
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- CN209172591U CN209172591U CN201820710406.2U CN201820710406U CN209172591U CN 209172591 U CN209172591 U CN 209172591U CN 201820710406 U CN201820710406 U CN 201820710406U CN 209172591 U CN209172591 U CN 209172591U
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- tibial plateau
- prosthese
- pad
- plateau pad
- knee joint
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Abstract
Prosthese is padded the utility model discloses a kind of diversification knee joint tibial platform, and for according to posterior cruciate ligament of knee with collateral ligaments function the case where is corresponding to select tibial plateau pad prosthese, using superhigh molecular weight polyethylene material；It is provided with arc-shaped recess (4) in the middle part of tibial plateau pad prosthese, and the upper surface two sides of tibial plateau pad prosthese are provided with the curved surface (5) for accommodating condyle of femur, the bottom surface of tibial plateau pad prosthese matches with platform support；Tibial plateau pad prosthese includes the standard type tibial plateau pad (1) cooperated respectively with condyle of femur, deep dish-type tibial plateau pad (2) and anterior lip raising type tibial plateau pad (3).Different types of tibial plateau pad and same platform support can be used cooperatively by a kind of diversification knee joint tibial platform pad prosthese of the utility model by the tibial plateau pad of diversified design, high with patient's knee joint matching degree.
Description
Technical field
The utility model relates to medical prosthesis fields more particularly to a kind of diversification knee joint tibial platform to pad prosthese.
Background technique
Knee-joint prosthesis is to be used for knee joint surface knee replacement surgery for replacing kneed surgical implant.It is existing
Knee-joint prosthesis structure be mainly press-fit structure, be made of condyle of femur, platform pad and platform support.Wherein platform pad and flat
Shin bone part prosthese, tibial plateau pad alternative knee joint tibial partial joint face are formed after the installation of platform support.
Above-mentioned knee joint tibial platform pad, though alternative knee joint tibial partial joint face, has progressive really,
It is to be had been found that in its structure in actual use there is also there are several disadvantages, causes the knee joint in practical application, fail to reach
To optimal using effect, and its disadvantage can be summarized as follows:
1) abrasion of platform pad is heavier, and condyle of femur and platform pad curved surface and contact for line at 10-45 ° of bending knee, although knee joint is false
Body high stability during exercise, but will appear stress friction phenomenon in daily walking process, keep polyethylene column very fast
Abrasion increases the probability that prosthese is overhauled to reduce prosthese service life, due to fixed platform prosthese during exercise condyle of femur outside
It turns over and will appear platform pad and lateral femoral condyle prosthesis frequent impact with inward turning, platform is caused to pad serious wear；Knee joint is bent the knee in height
When, condyle of femur be easy after turn over dislocation, although now with product be the design for preventing femur condyle dislocation, height bending knee
When with condyle of femur and platform pad contact position variation, anti-dislocation effect be not so ideal；
2) design of platform pad is single, when occurring the case where sound patient's collateral ligaments function or afunction in operation,
Since tibial plateau pad designs single, cannot be according to the collateral ligaments and front and back ligamentaum cruciatum of patient the case where, displacement is suitable for
The tibial plateau pad of patient influences patient's Postoperative Satisfaction and comfort level, and can to the reduction of patient's knee range of motion occur
It can increase and postoperative the probability of prosthetic loosening occur；The platform pad of overwhelming majority knee-joint prosthesis product is that non-diversification is set now
Meter, tends not in use according to the matched prosthese of patient's ligament function mounting, this will cause platform pad in condyle of femur
It turns up and changes with the rotary middle point of inward turning, cause the serious wear of platform pad.
Summary of the invention
The purpose of this utility model is to provide one kind can be made to measure according to the kneed ligament function of patient it is more
Memberization knee joint tibial platform pads prosthese.
To achieve the above object, the specific technical solution of the diversification knee joint tibial platform pad prosthese of the utility model
Are as follows:
A kind of diversification knee joint tibial platform pad prosthese, the case where being used for according to posterior cruciate ligament of knee and collateral ligaments function
Corresponding selection tibial plateau pads prosthese, using superhigh molecular weight polyethylene material；It is provided in the middle part of tibial plateau pad prosthese
Arc-shaped recess, and the upper surface two sides of tibial plateau pad prosthese are provided with the curved surface for accommodating condyle of femur, and shin bone is flat
The bottom surface of cushion prosthese matches with platform support；Tibial plateau pad prosthese includes flat with the standard type shin bone of condyle of femur cooperation respectively
Cushion, deep dish-type tibial plateau pad and anterior lip raising type tibial plateau pad.
Further, the standard type tibial plateau pad patient intact for posterior cruciate ligament of knee and collateral ligaments function, standard
The back rake angle of arc-shaped depression in the middle part of type tibial plateau pad is 2-5 °, and swing angle degree is 15 ° inside and outside the maximum of two N-Side surfs,
By two N-Side surfs to allow knee-joint prosthesis that can have maximum 15 ° of inside and outside swing angle degree.
Further, deep dish-type tibial plateau pad is for posterior cruciate function to be intact, the defective trouble of collateral ligaments function
Person, the back rake angle of the arc-shaped depression in the middle part of deep dish-type tibial plateau pad are 0 °；The curved surface of deep dish-type tibial plateau pad two sides with
The bottom surface comprehensive engagement of condyle of femur.
Further, anterior lip raising type tibial plateau pad is for posterior cruciate ligament of knee and the defective patient of collateral ligaments function
Or the patient that posterior cruciate function is defective, collateral ligaments function is intact, the circle in the middle part of anterior lip raising type tibial plateau pad
The back rake angle of arc-shaped recess is 2-5 °, and swing angle degree is 15 ° inside and outside the maximum of curved surface, by two N-Side surfs to allow knee-joint prosthesis
There can be maximum 15 ° of inside and outside swing angle degree.
Further, anterior lip raising type tibial plateau pad include protrusion anterior lip, anterior lip be arranged in arc-shaped depression side,
Close to the rear side of condyle of femur, anterior lip opposing arcs shape recess is higher by 3-5mm, femur condyle dislocation when buckling high to prevent knee joint.
The advantages of diversification knee joint tibial platform pad prosthese of the utility model, is:
1) meet local physiological and biomethanics requirement, reduce tibial plateau pad and wear and meet what patient needed, it can be with
Reproduce the prosthese of the normal kinematics character of knee joint；
2) defect existing for existing knee joint tibial platform pad prosthese is overcome, a kind of shin bone of diversified design is provided
Platform pad can be according to the kneed ligament of patient to intersect after being adapted to and the patient of two collateral ligaments different function loss
The features such as function is made to measure, has stability good, high with patient's knee joint size matching degree, to make the Using prosthesis of implantation
Stablize, facilitating operation, reduces abrasion to extend the prosthese service life, thus more suitable for practical；
3) by the tibial plateau pad of the application diversified design, can by different types of tibial plateau pad with it is same
Platform support is used cooperatively, high with patient's knee joint matching degree.
Detailed description of the invention
Fig. 1 a and Fig. 1 b are the structural schematic diagram and side view of the standard type tibial plateau pad of the utility model；
Fig. 2 a and Fig. 2 b are the structural schematic diagram and side view of the deep dish-type tibial plateau pad of the utility model；
Fig. 2 c is the deep dish-type tibial plateau pad of the utility model and the structural schematic diagram that condyle of femur matches；
Fig. 3 a-3c is the structural schematic diagram and side view of the anterior lip raising type tibial plateau pad of the utility model；
Fig. 4 is that the tibial plateau of the application pads the scheme of installation of prosthese.
Specific embodiment
In order to be better understood by the purpose of this utility model, structure and function, with reference to the accompanying drawing, to the utility model
A kind of diversification knee joint tibial platform pad prosthese does further detailed description.Tibial plateau pads diversified design
As shown in Figures 1 to 4, it is shown as the knee joint tibial platform pad prosthese of the utility model, according to posterior cruciate ligament of knee
The case where with collateral ligaments function is corresponding to select tibial plateau to pad prosthese, and using superhigh molecular weight polyethylene material, shin bone is flat
Arc-shaped recess 4 is provided in the middle part of cushion prosthese, and the upper surface two sides of tibial plateau pad prosthese are provided with for holding
Receive the curved surface 5 of condyle of femur, the bottom surface of tibial plateau pad prosthese matches with platform support；Tibial plateau pad prosthese include respectively with stock
The standard type tibial plateau pad 1 of bone condyle cooperation, deep dish-type tibial plateau pad 2 and anterior lip raising type tibial plateau pad 3.
Specifically, the patient intact for posterior cruciate ligament of knee and collateral ligaments function of standard type tibial plateau pad 1, mark
The back rake angle (angle of the section and horizontal plane that are recessed) of the arc-shaped depression at 1 middle part of pseudotype tibial plateau pad is 2-5 ° (excellent
Select 3 °), and swing angle degree (i.e. the angle of longitudinal center plane and longitudinal maximum inclination face) is 15 ° inside and outside the maximum of two N-Side surfs,
It, being capable of compensation operation operation or art by two N-Side surfs to allow knee-joint prosthesis that can have maximum 15 ° of inside and outside swing angle degree
Malrotation between stock-tibial prosthesis caused by normal activity afterwards improves the comfort level of the postoperative knee articulation of patient.
Further, deep dish-type tibial plateau pad 2 is for posterior cruciate function to be intact, the defective trouble of collateral ligaments function
The back rake angle of person, the arc-shaped depression at deep 2 middle part of dish-type tibial plateau pad are 0 °, i.e. the section of arc-shaped depression and horizontal plane is flat
Together；The bottom shape of curved surface and condyle of femur that deep dish-type tibial plateau pads 2 two sides matches, and the bottom surface of curved surface and condyle of femur is comprehensive
Contact, when the high buckling of knee joint, deep dish-type tibial plateau pad 2 is able to maintain the high contact area of stock-tibial prosthesis, to subtract
The abrasion of few tibial plateau pad.
Further, anterior lip raising type tibial plateau pad 3 is for posterior cruciate ligament of knee and the defective trouble of collateral ligaments function
Person or the patient that posterior cruciate function is defective, collateral ligaments function is intact, 3 middle part of anterior lip raising type tibial plateau pad
The back rake angle (angle of the section and horizontal plane that are recessed) of arc-shaped depression is 2-5 ° (preferably 3 °), outward turning in the maximum of curved surface
Angle (i.e. the angle of longitudinal center plane and longitudinal maximum inclination face) is 15 °, by two N-Side surfs to allow knee-joint prosthesis energy
It is enough with maximum 15 ° of inside and outside swing angle degree, can stock-tibial prosthesis caused by compensation operation operation or postoperative normal activity it
Between malrotation, improve the postoperative knee articulation of patient comfort level.In addition, anterior lip raising type tibial plateau pad 3 includes convex
The side of arc-shaped depression, the rear side close to condyle of femur is arranged in the anterior lip 31 risen, anterior lip, and anterior lip opposing arcs shape recess is higher by
3-5mm (preferably 4mm), under the premise of guaranteeing that condyle of femur and tibial plateau pad knuckle shaped are right, by improving anterior lip raising type
The anterior lip of tibial plateau pad 3, dislocation phenomenon occurs for condyle of femur when can be avoided knee joint high buckling.
The diversification knee joint tibial platform of the utility model pads prosthese, meets local physiological and biomethanics requirement, subtracts
Few tibial plateau pad wears and meets patient's needs, can reproduce the prosthese of the normal kinematics character of knee joint；It overcomes
Defect existing for existing knee joint tibial platform pad prosthese, provides a kind of tibial plateau pad of diversified design, to be adapted to
The patient of intersection and the loss of two collateral ligaments different function afterwards, can make to measure according to the kneed ligament function of patient, have
There is the features such as stability is good, high with patient's knee joint size matching degree, thus make Using prosthesis stabilization, the facilitating operation of implantation,
Abrasion is reduced to extend the prosthese service life, thus more suitable for practical；It, can be with by the tibial plateau pad of the application diversified design
It will be used cooperatively with same platform support, it is high with patient's knee joint matching degree.
The utility model is further described by specific embodiment above, it should be understood that, have here
The description of body, should not be construed as the restriction to the spirit and scope of the utility model, and one of ordinary skilled in the art is readding
The various modifications made after reader specification to above-described embodiment belong to the range that the utility model is protected.
Claims (5)
1. a kind of diversification knee joint tibial platform pads prosthese, which is characterized in that for according to posterior cruciate ligament of knee and collateral ligaments
The case where function, selects tibial plateau to pad prosthese accordingly, using superhigh molecular weight polyethylene material；Tibial plateau pads prosthese
Middle part is provided with arc-shaped recess (4), and the upper surface two sides of tibial plateau pad prosthese are provided with for accommodating condyle of femur
(6) bottom surface of curved surface (5), tibial plateau pad prosthese matches with platform support；Tibial plateau pad prosthese include respectively with femur
The standard type tibial plateau pad (1) of condyle cooperation, deep dish-type tibial plateau pad (2) and anterior lip raising type tibial plateau pad (3).
2. diversification knee joint tibial platform according to claim 1 pads prosthese, which is characterized in that standard type tibial plateau
(1) patient intact for posterior cruciate ligament of knee and collateral ligaments function is padded, it is arc-shaped in the middle part of standard type tibial plateau pad (1)
The back rake angle of recess is 2-5 °, and swing angle degree is 15 ° inside and outside the maximum of two N-Side surfs, by two N-Side surfs to allow knee joint
Prosthese can have maximum 15 ° of inside and outside swing angle degree.
3. diversification knee joint tibial platform according to claim 1 pads prosthese, which is characterized in that deep dish-type tibial plateau
Pad (2) intact, defective patient of collateral ligaments function for posterior cruciate function, deep dish-type tibial plateau pad (2) middle part
Arc-shaped depression back rake angle be 0 °；The bottom surface comprehensive engagement of the curved surface and condyle of femur of deep dish-type tibial plateau pad (2) two sides.
4. diversification knee joint tibial platform according to claim 1 pads prosthese, anterior lip raising type tibial plateau pad (3) is used
Defective, the collateral ligaments function in posterior cruciate ligament of knee and the defective patient of collateral ligaments function or posterior cruciate function
Intact patient, the back rake angle of the arc-shaped depression in the middle part of anterior lip raising type tibial plateau pad (3) are 2-5 °, the most imperial palace of curved surface
Outward turning angle is 15 °, by two N-Side surfs to allow knee-joint prosthesis that can have maximum 15 ° of inside and outside swing angle degree.
5. diversification knee joint tibial platform according to claim 4 pads prosthese, anterior lip raising type tibial plateau pad (3) packet
The anterior lip (31) of protrusion is included, the side of arc-shaped depression, the rear side close to condyle of femur is arranged in anterior lip, and anterior lip opposing arcs shape is recessed
It falls into and is higher by 3-5mm, femur condyle dislocation when buckling high to prevent knee joint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820710406.2U CN209172591U (en) | 2018-05-14 | 2018-05-14 | Diversification knee joint tibial platform pads prosthese |
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| CN201820710406.2U CN209172591U (en) | 2018-05-14 | 2018-05-14 | Diversification knee joint tibial platform pads prosthese |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108403264A (en) * | 2018-05-14 | 2018-08-17 | 北京市春立正达医疗器械股份有限公司 | Diversification knee joint tibial platform pads prosthese |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108403264A (en) * | 2018-05-14 | 2018-08-17 | 北京市春立正达医疗器械股份有限公司 | Diversification knee joint tibial platform pads prosthese |
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