A kind of artificial ankle jointTechnical field
The present invention relates to orthopaedics medical instruments field, specifically a kind of artificial ankle joint.
Background technology
It is well known that replacing the pathology of ankle-joint or the articular surface of injury with prosthetic component so that patient can recover normalMotion.General artificial ankle joint includes the astragalus part of the tibial component of implantation patient's shin bone and implantation patient's astragalus, additionally,Bearing insert can be provided between tibial component and astragalus part.But the artificial ankle joint of prior art is to be fixed from turningDynamic, or the free degree can only plantar flexion or dorsiflex in limited range.These ankle-joints are only applicable on relatively flat road surfaceWalking.When road surface is rugged and rough, these ankle-joints because realizing the varus of ankle-joint and turn up, and can cause patient to walk appearanceUnnatural or walking is unstable, and also without buffer unit, comfort level is poor, and security is poor.Accordingly, it would be desirable to develop a kind of artificial ankle closeSection, on the premise of the ankle-joint free degree is ensured, its comfort level is high, safe, nature of taking action, and is adapted to up on various road surfacesWalk.
The content of the invention
The problem to be solved in the present invention is：Overcome the deficiencies in the prior art, there is provided a kind of simple structure, reasonable in design, behaviourMake simple, on the premise of the ankle-joint free degree is ensured, its comfort level is high, safe with certain cushioning effect, actionIt is natural, it is adapted to the artificial ankle joint walked on various road surfaces.
To solve above-mentioned technical problem, the technical solution used in the present invention is：A kind of artificial ankle joint, including an interlocking meltsHandle is closed, a joint ball connecting plate, the universal connection one in bottom of the joint ball connecting plate are fixed in the bottom of the interlocking fusion handleJoint ball, the joint ball is the housing of a hemispherical dome structure, and Open Side Down for the joint ball, the lower limb of the joint ballLeft connecting portion and right connecting portion are arranged with, between the joint ball connecting plate and the upper surface of joint ball flexible unit is connectedPart, is provided with support component between the joint ball connecting plate and joint ball, joint ball company is fixed in one end of the support componentOn fishplate bar, the other end of the support component is movably connected on joint ball.
Further, the joint ball connecting plate is connected with the top of joint ball by a joint coupling.
Further, the bottom of the joint ball connecting plate is provided with a groove, and the top of the joint ball is located in groove.
Further, the surface of the joint ball is provided with air-vent.
Further, the surface of the joint ball is provided with screw, has inter-locking screw to pass through in the screw.
Further, it is provided with fixing hole on the left connecting portion and right connecting portion.
Further, the interlocking fusion handle material is Ti-6Al-4V.
Further, the material of the inter-locking screw is Ti-6Al-4V.
Further, the material of the joint ball is CoCrMo alloys.
The present invention has the advantages and positive effects that：
Present configuration is simple, reasonable in design, simple to operate, on the premise of the ankle-joint free degree is ensured, its comfort levelHeight, safe with certain cushioning effect, nature of taking action is adapted to be walked on various road surfaces.
Description of the drawings
Fig. 1 is the front view of artificial ankle joint of the present invention.
Fig. 2 is the right view of artificial ankle joint of the present invention.
Fig. 3 is a quarter sectional view of the joint ball of artificial ankle joint of the present invention.
In figure：1st, interlocking fusion handle；2nd, joint ball connecting plate；3rd, joint coupling；4th, joint ball；5th, groove；6th, breathe freelyHole；7th, left connecting portion；8th, right connecting portion；9th, fixing hole；10th, screw；11st, flexible member；12nd, support component；13rd, interlocking spiral shellNail.
Specific embodiment
As shown in Figure 1, 2, 3, a kind of artificial ankle joint, including interlocking fusion handle 1, the material of interlocking fusion handle 1 is Ti-A joint ball connecting plate 2 is fixed in 6Al-4V, the bottom of interlocking fusion handle 1, and the bottom of joint ball connecting plate 2 passes through a universal connectionOne joint ball 4 of universal connection of device 3, the material of joint ball 4 is CoCrMo alloys, and the bottom of joint ball connecting plate 2 is provided with a groove5, the top of joint ball 4 is located in groove 5, joint ball 4 for a hemispherical dome structure housing, the surface of joint ball 4 is provided with ventilativeHole 6, Open Side Down for joint ball 4, and the lower limb of joint ball 4 is arranged with left connecting portion 7 and right connecting portion 8, the He of left connecting portion 7Fixing hole 9 is provided with right connecting portion 8, the surface of joint ball 4 is provided with screw 10, screw 10 has inter-locking screw 13 to pass through, interlockingThe material of screw 13 has elastic component 11 for connection between the upper surface of Ti-6Al-4V, joint ball connecting plate 2 and joint ball 4, closesSupport component 12 is provided between section ball connecting plate 2 and joint ball 4, one end of support component 12 is fixed on joint ball connecting plate 2,The other end of support component 12 is movably connected on joint ball 4.
The course of work of this example：When using, interlocking fusion handle 1 is fixed on the shin bone of patient, while by joint ball 4It is placed on the astragalus of patient, and is fixed through screw 10 with inter-locking screw 13.The bottom of joint ball connecting plate 2 is by universalThe universal connection joint ball 4 of connector 3, patient can freely swing ankle-joint, after joint ball connecting plate 2 and joint ball 4Support component 12 is provided between end, on the premise of the ankle-joint free degree is ensured, its comfort level is high；And in joint ball connecting plateConnection between 2 and the upper surface of joint ball 4 has elastic component 11, safe with certain cushioning effect, nature of taking action,It is adapted to be walked on various road surfaces.
Embodiments of the invention have been described in detail above, but the content is only the preferred embodiments of the present invention, noThe practical range for limiting the present invention can be considered as.All impartial changes made according to the present patent application scope and improvement etc.,Should still belong within the patent covering scope of the present invention.