CN209678765U - Ankle prosthesis - Google Patents
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- CN209678765U CN209678765U CN201822022034.7U CN201822022034U CN209678765U CN 209678765 U CN209678765 U CN 209678765U CN 201822022034 U CN201822022034 U CN 201822022034U CN 209678765 U CN209678765 U CN 209678765U
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Abstract
The utility model relates to medical prosthesis technical fields, disclose a kind of ankle prosthesis.The ankle prosthesis includes: the shin bone broach for being connected with shin bone, and shin bone broach includes the first broach inside the pulp cavity of shin bone and outside the pulp cavity of shin bone and the second broach for abutting with the end face of shin bone；The tibial plate being fixedly connected with the second broach；The sliding mats slid against with tibial plate；And one end is slidably connected with sliding mats, the other end is used for the astragalus support being connected with astragalus.Wherein, the outer surface of the first broach and/or the second broach is formed with three-dimensional porous structure sheaf.The ankle prosthesis of the utility model can make the ankle prosthesis after implantation more stable.
Description
Technical field
The utility model relates to medical prosthesis technical field more particularly to a kind of ankle prosthesis.
Background technique
Ankle prosthesis is to be used to plant instead of the surgery at human body sufferer ankle-joint position applied in ankle-joint displacement technique
Enter object.When the ankle-joint of human body needs to repair because of sufferer, or when meeting with tumour or comminuted fracture, tend to make
At the severe bone of the distal end of the shin bone of ankle-joint, serious bone defect not only enables the carrying of the power of the osteotomy site of shin bone
Power is deteriorated, and is also easy to that the attachment point defect of the muscle of ankle or joint capsule is led to problems such as to damage, needs to select to fit at this time
The ankle prosthesis of conjunction replaces the ankle-joint of sufferer.
Current existing ankle prosthesis is mainly made of tibial plate, astragalus support and polyethylene liner three parts, wherein shin
Bone plate is connected with the shin bone of human body, and astragalus support is connected with the astragalus of human body, and polyethylene liner can be relative to tibial plate and astragalus support
Movable function free to slide to realize ankle prosthesis.However, existing ankle prosthesis on the one hand can not be more effectively
It is fixed with shin bone, i.e. the connection of tibial plate and shin bone is unstable；On the other hand it is attached ankle prosthesis can not more effectively to be rebuild
The attachment point and joint capsule of close muscle, this just not can guarantee the stability after ankle prosthesis implantation, to be unfavorable for patient
Postoperative rehabilitation, or even it be easy to cause the secondary injury to patient.
In view of the deficiencies of the prior art, those skilled in the art is badly in need of seeking more stable ankle-joint after a kind of implantation
Prosthese, to make up the deficiencies in the prior art.
Utility model content
In order to make implantation after ankle prosthesis it is more stable, the utility model provides a kind of ankle prosthesis.
Ankle prosthesis according to the present utility model, including the shin bone broach for being connected with shin bone, shin bone broach includes
The first broach inside the pulp cavity of shin bone and outside the pulp cavity of shin bone and the second broach for being abutted with the end face of shin bone；
The tibial plate being fixedly connected with the second broach；The sliding mats slid against with tibial plate；And one end is slidably connected with sliding mats,
The other end is used for the astragalus support being connected with astragalus.Wherein, the outer surface of the first broach and/or the second broach is formed with three-dimensional porous
Structure sheaf.
Further, three-dimensional porous structure sheaf include a plurality of string diameter and be crossed-over by a plurality of string diameter formed it is multiple
Hole, each hole are interconnected, and the equivalent diameter of each hole is different.Wherein, the equivalent diameter range of each hole be 100 μm extremely
400 μm, and the range of the porosity of three-dimensional porous structure is 50% to 80%.
Further, the outer surface of the first broach and the second broach is each formed with three-dimensional porous structure sheaf, is formed in first
The thickness of the three-dimensional porous structure sheaf of the outer surface of broach and the second broach is identical, and thickness range is 1mm to 3mm.
Further, the equivalent diameter for being formed in each hole in the porous three dimensional structure layer of the outer surface of the first broach is big
The equivalent diameter of each hole in the porous three dimensional structure layer for being equal to the outer surface for being formed in the second broach.
Further, it is formed in the equivalent diameter of each hole in the porous three dimensional structure layer of the outer surface of the first broach
Range is 200 μm to 400 μm, is formed in the equivalent diameter of each hole in the porous three dimensional structure layer of the outer surface of the second broach
Range be 100 μm to 200 μm.
Further, the first broach, the second broach and porous three dimensional structure layer are integrally formed, and the first broach, second
Broach is made with porous three dimensional structure layer of titanium alloy material.
Further, the second broach is formed with the platform abutted for the end face with shin bone with the junction of the first broach.
Further, the top end close to the second broach of the bottom end end face of the close tibial plate of the second broach and tibial plate
The upper setting in one of both faces is fluted, the protrusion with groove cooperation is provided in another one, in the cooperation of protrusion and groove
Under state, protrusion being capable of movement of the confinement groove on the length direction along shin bone broach.
Further, one in end face the two of the close astragalus support of the end face of the close sliding mats of astragalus support and sliding mats
It is formed with sliding slot on person, the sliding rail with sliding slot cooperation, under the mated condition of sliding rail and sliding slot, astragalus support are formed in another one
Opposite glide direction is vertical with the length direction of the length direction of groove and shin bone broach simultaneously with sliding mats.
Further, it is also formed on the side wall of the second broach outside the first suture hole of the second broach, astragalus support
The second suture hole of astragalus support is formed through on wall, the axis direction in the second suture hole is parallel with the length direction of groove.
Compared with prior art, the ankle prosthesis of the utility model has the advantage of following several respects:
1) by the three-dimensional porous structure sheaf being formed in the outer surface of the first broach and/or the second broach, so that shin bone
The outer surface of broach is formed as porous structure, in this way, the first broach is provided with the contact area bigger with the inner wall of pulp cavity, i.e.,
The outer surface of one broach obtains better Bone Ingrowth ability, and the bone tissue in pulp cavity can quickly be grown into porous structure, thus
Facilitate ankle prosthesis fixation stable in shin bone；And the porous structure formed in the outer surface of the second broach is but also the
The outer surface of two broach obtains better bone and creeps ability, and the bone tissue in pulp cavity can quickly be grown along the outer surface of the second broach
Enter in its porous structure, so that the fixation of shin bone broach and shin bone is more stable；
2) weight of ankle prosthesis can be effectively reduced in the setting of three-dimensional porous structure sheaf, additionally aids reconstruction soft tissue
With the attachment point of muscle, so as to which patient's postoperative recovery time is effectively reduced, and postoperative extensive of patient is significantly improved
Multiple effect；
3) metaplasia is customized by the shin bone broach of the ankle-joint to the utility model to produce, shin bone broach can be made more to adapt to
The internal diameter and bending curvature of the pulp cavity of patient to further strengthen the stability of the first broach and pulp cavity cooperation, and customize
The second broach that metaplasia produces can also help to restore the length of suffering limb, ensure that the suffering limb height of patient and strong limb height are protected
It holds consistent；
4) the first suture hole through the second broach being formed on the side wall of the second broach is formed on the outer wall of astragalus support
Some runs through the second suture hole of astragalus support, needs to repair because of sufferer in the ankle-joint of human body, or meet with tumour or comminuted
When fracture, can also suturing soft tissue be repaired or be rebuild damaged pass between the first suture hole and the second suture hole
Condyle, to be conducive to the post-operative recovery of patient.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar
Element or part are generally identified by similar appended drawing reference.In attached drawing, each element or part might not be according to actual ratios
It draws.
Fig. 1 is the structural schematic diagram according to the ankle prosthesis of the utility model；
Fig. 2 is according to the ankle prosthesis of the utility model and the connection schematic diagram of shin bone；
Fig. 3 is the structural schematic diagram of shin bone broach shown in FIG. 1；
Fig. 4 is the structural schematic diagram of tibial plate shown in FIG. 1；
Fig. 5 is the structural schematic diagram of sliding mats shown in FIG. 1；
Fig. 6 is the structural schematic diagram of astragalus support shown in FIG. 1.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only
For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation
Novel protection scope.
Fig. 1 shows the structure of ankle prosthesis 100 according to the present utility model, and Fig. 2 is the ankle according to the utility model
The connection schematic diagram of articular prosthesis 100 and shin bone 5.Referring to figs. 1 and 2, which includes: to be used for and shin
The connected shin bone broach 1 of bone 5, shin bone broach 1 include the first broach 11 inside the pulp cavity 51 of shin bone 5 and positioned at shin bone 5
Pulp cavity 51 outside and the second broach 12 for being abutted with the end face of shin bone 5 52；The tibial plate 2 being fixedly connected with the second broach 12；
The sliding mats 3 slid against with tibial plate 2；And one end is slidably connected with sliding mats 3, the other end be used for be connected with astragalus away from
Bone support 4.Wherein, the outer surface of the first broach 11 and/or the second broach 12 is formed with three-dimensional porous structure sheaf 13.
Usually when replacing ankle prosthesis 100, osteotomy processing need to be done at the shin bone 5 of patient, osteotomy treated shin bone 5
There are a large amount of bone defect, the utility model is by the way that shin bone broach 1 to be arranged to include 12 liang of the first broach 11 and the second broach
Part, so that the first broach 11 may extend into quickly melting so as to its subsequent bone tissue in pulp cavity in the pulp cavity of shin bone 5
It closes, and the second broach 12 outside shin bone 5 can effectively make up the bone defect of shin bone 5, that is, pass through the length of the second broach 12
It spends to make up the length of the bone of 5 defect of shin bone.The end face 52 of the second broach 12 and shin bone 5 abuts against simultaneously, can effectively ensure shin
The stability that intramedullary pin 1 and shin bone 5 are fixed.And it is vertical by being formed in the outer surface of the first broach 11 and/or the second broach 12
Body porous structure layer 13, so that the outer surface of shin bone broach 1 is formed as porous structure, in this way, the first broach 11 is provided with and marrow
The bigger contact area of the inner wall of chamber 51, the i.e. outer surface of the first broach 11 obtain better Bone Ingrowth ability, in pulp cavity 51
Bone tissue can quickly grow into porous structure, to facilitate the fixation stable in shin bone 5 of ankle prosthesis 100；And
Porous structure that the outer surface of second broach 12 is formed is but also the outer surface of the second broach 12 obtains better bone creeps energy
Power, the bone tissue in pulp cavity 51 can quickly be grown into its porous structure along the outer surface of the second broach 12, so that shin bone marrow
Needle 1 and the fixation of shin bone 5 are more stable.In addition, ankle prosthesis 100 can be effectively reduced in the setting of three-dimensional porous structure sheaf 13
Weight, additionally aid rebuild soft tissue and muscle attachment point, so as to which patient's postoperative recovery time is effectively reduced, and
Significantly improve the postoperative recovery effects of patient.In addition, by the shin bone broach 1 of the ankle-joint 100 to the utility model into
Row customizes production, and shin bone broach 1 can be made more to adapt to the internal diameter and bending curvature of the pulp cavity 51 of patient, to further strengthen the
The stability that one broach 11 cooperates with pulp cavity 51, and the second broach 12 for customizing production can also help to restore the length of suffering limb
Degree ensures that the suffering limb height of patient is consistent with strong limb height.
According to the utility model, three-dimensional porous structure sheaf 13 may include a plurality of string diameter and is crossed-over by a plurality of string diameter
The multiple holes formed, each hole are interconnected, and the equivalent diameter of each hole is different, wherein the equivalent diameter model of each hole
Enclosing is 100 μm to 400 μm, and the range of the porosity of three-dimensional porous structure is 50% to 80%.By will mutually be handed over by string diameter
Each hole that mistake connection is formed is interconnected, and the big little structure of the equivalent diameter of each hole is inconsistent, and to three-dimensional porous knot
The equivalent diameter of the hole of structure and the range of porosity are specifically arranged, so that the structure and human body of three-dimensional porous structure sheaf 13
Trabecular bone structure more closely, the three-dimensional porous structure sheaf 13 of porosity with higher and connectivity can be good at inducing
The sclerotin of Bone Ingrowth, such human body can be grown into rapid and natural in the hole of three-dimensional porous structure sheaf 13, to improve skeletonization
The ability of adherency, the increment, differentiation of cell, effectively promotes growing into and creeping for the bone tissue in shin bone 5, and then be conducive to
Ankle prosthesis 100 with the bone tissue rapid fusion of human body and fixation, therefore effectively improves postoperative extensive of patient after surgery
Multiple effect.
It should be noted that the section of each hole formed by string diameter is not regular circle, cross sectional shape be can be
Various shape, in consideration of it, " equivalent diameter " of each hole mentioned herein should be understood as that the section by each hole is equivalent to justify
When shape, the circular diameter.It since the section is equivalent to circular diameter is calculated according to the real area in section,
The numerical value of resulting diameter is accurate numerical value.
Preferably, it is gradually increased from the density of the hole on the outside to the direction of inside of three-dimensional porous structure layer 13, from
And during making human body Bone Ingrowth, bone tissue more successfully quickly can grow into solid by the outside of three-dimensional porous structure sheaf 13
The inside of porous structure layer 13, with promoted three-dimensional porous structure sheaf 13 and body bone tissue merge and fixed effect.
It is further preferred that can be formed with multiple protrusion (not shown)s on the periphery wall of each string diameter, multiple protrusion is set
The roughness of the periphery wall for increasing string diameter is set, to increase the frictional force of its periphery wall, in this way, during Bone Ingrowth,
The fixation of bone tissue and string diameter is more secured and stablizes.Preferably, which can be circular salient point, be also possible to cone cell
Salient point.It is worth noting that, the shape of the protrusion is not limited only to above-mentioned shape, as long as the protrusion can effectively increase
The external surface area of string diameter with realize increase its periphery wall frictional force purpose, which is not described herein again.Further, this is convex
The width range of the largest contours shape of the cross section in portion is 5-50 μm, and maximum height range is 10-50 μm.
It is further preferred that protrusion can be uniformly distributed along the outer surface of string diameter, can also be distributed with discrete type.It is further preferred that vertical
The number of protrusion in the string diameter in the biggish region of the porosity of body porous structure layer 13 can be greater than three-dimensional porous structure sheaf 13
The number of protrusion in the string diameter in the region of porosity, so that Bone Ingrowth is more secured.It is further preferred that from three-dimensional porous knot
The density of the protrusion in string diameter on the outer edge of structure layer 13 is greater than from convex in the string diameter of the inside of three-dimensional porous structure layer 13
The density in portion.
In the embodiment shown in fig. 1, the outer surface of the first broach 11 and the second broach 12 is each formed with three-dimensional porous
Structure sheaf 13, the thickness for being formed in the three-dimensional porous structure sheaf 13 of the outer surface of the first broach 11 and the second broach 12 can phase
Together.Preferably, the thickness range of three-dimensional porous structure sheaf 13 is 1mm to 3mm, more preferably 2mm.By in 11 He of the first broach
The outer surface of second broach 12 forms the three-dimensional porous structure sheaf 13 of same thickness, has shin bone broach 1 more sharp
In the outer surface that Bone Ingrowth and bone are creeped, on the other hand also make shin bone broach 1 that there is preferably carrying, conduction and dispersive stress
The ability of load, so that ankle prosthesis 100 be made to obtain more stable using effect.
Certainly, the thickness for being formed in the three-dimensional porous structure sheaf 13 of the outer surface of the first broach 11 and the second broach 12 can also
With difference, the difference for the patient being applicable according to shin bone broach 1 can be designed specifically, such as when patient body is heavier,
In order to guarantee the intensity of shin bone broach 1, the thickness of the three-dimensional porous structure sheaf 13 of the outer surface of the second broach 12 can be arranged
It is thinner compared to the three-dimensional porous structure sheaf 13 of the outer surface of the first broach 11, and when the bone of patient itself is creeped ability
When poor, in order to guarantee shin bone broach 1 fixation stability, can be by the three-dimensional porous structure sheaf of the outer surface of the second broach 12
The thickness of the three-dimensional porous structure sheaf 13 of the outer surface compared to the first broach 11 of 13 thickness setting is thicker.
In one preferred embodiment, it is formed in the porous three dimensional structure layer 13 of the outer surface of the first broach 11
The equivalent diameter of each hole can be more than or equal to each hole in the porous three dimensional structure layer 13 for the outer surface for being formed in the second broach 12
The equivalent diameter of gap.Further, it is formed in each hole in the porous three dimensional structure layer 13 of the outer surface of the first broach 11
Equivalent diameter ranges preferably from 200 μm to 400 μm, at this time the controlled porosity in the region between 50% to 60%, into
One step is preferably 300 μm to 400 μm, and controlled porosity is between 50% to 55%；It is formed in the outer surface of the second broach 12
Porous three dimensional structure layer 13 in the equivalent diameter of each hole range preferably from 100 μm to 200 μm, controlled porosity at this time
System is between 70% to 80%, and further preferably 100 μm to 150 μm, controlled porosity is between 75% to 80%.
By above-mentioned setting, it is formed in the equivalent straight of the hole of the porous three dimensional structure layer 13 of the outer surface of the first broach 11
Diameter can preferably promote Bone Ingrowth at 200 μm to 400 μm, so that the initial stage for keeping ankle prosthesis 100 displaced obtains
More stable fixed effect；And it is formed in the equivalent diameter of the hole of the porous three dimensional structure layer 13 of the outer surface of the second broach 12
Range when being 100 μm to 200 μm, bone is creeped the fastest of growth, so as to accelerate in the displacement of ankle prosthesis 100
The growth of the bone tissue of phase and later period, and then promote the faster rehabilitation of patient.
In an embodiment as illustrated in figure 3, the first broach 11, the second broach 12 and porous three dimensional structure layer 13 can be integrated
Molding.Wherein, three-dimensional porous structure sheaf 13 can be made of metal powder, which can be titanium alloy, pure titanium or tantalum gold
Belong to etc..Preferably, three-dimensional porous structure sheaf 13 is made of titanium alloy material, is preferably made of Ti6Al4V.First broach 11,
Two broach 12 also can be made of titanium alloy material.Integrally formed first broach 11, the second broach 12 and porous three-dimensional knot
Structure 13 not only makes the processing of shin bone broach 1 more convenient, while also reducing the interaction force between each component, to make shin bone
The overall structure of broach 1 is more stable, and mechanical strength is more preferable.
Fig. 1 is returned to, the second broach 12 can be formed with the junction of the first broach 11 and abut for the end face 52 with shin bone 5
Platform 14, which realizes the second broach 12 more preferably for carry the active force from shin bone 5 in a manner of platform
Mechanics bearing function, to help to improve the whole mechanics bearing function of shin bone broach 1.Preferably, the second broach 12
It may be configured to cross section and be the column of rectangle, to keep ankle prosthesis 100 more stable when in use, the support of shin bone 5 is imitated
Fruit is more stable.
In conjunction with shown in Fig. 1, Fig. 3 and Fig. 4, the bottom end end face 15 of close tibial plate 2 and the leaning on for tibial plate 2 of the second broach 12
It may be provided with groove 16 on one of both top end faces 21 of nearly second broach 12, may be provided in another one and groove 16
The protrusion 22 of cooperation.Protrusion 22 under the mated condition of groove 16, protrusion 22 can confinement groove 16 along shin bone broach 1
Movement on length direction.It can be along the paper side perpendicular to Fig. 3 when installing shin bone broach 1 and tibial plate 2 by the setting
It is pushed into groove 16 to by tibial plate 2, realizes the preliminary fixation of shin bone broach 1 and tibial plate 2, it then can be into one by bone cement
Shin bone broach 1 and tibial plate 2 are fixed together by step.
It is preferably carried out in mode in as shown in Figure 3 and Figure 4, groove 16 is formed in the close tibial plate of the second broach 12
On 2 bottom end end face 15.Further, the inner surface of groove 16 is configured to arc-shaped, and protrusion 22 is configured to spherical, this is spherical
The outer surface of protrusion 22 and the arc-shaped inner surface of groove 16 match, and groove 16 is located at the bottom end end face 15 of the second broach 12
On open end 161 width (width on left and right directions i.e. shown in Fig. 3) be less than protrusion 22 globular part diameter.Pass through
The setting, when tibial plate 2 is after being pushed into groove 16, tibial plate 2 and shin bone broach 1 can be limited in each other along shin bone marrow
Movement on the length direction of needle 1, to realize the better preliminary fixed effect of shin bone broach 1 Yu tibial plate 2.
It is preferably carried out in mode in as shown in Figure 5 and Figure 6, as shown in connection with fig. 1, the close sliding mats 3 of astragalus support 4
It can be formed with sliding slot 31 on one of both end face and the end face of close astragalus support 4 of sliding mats 3, can be formed in another one
The sliding rail 41 cooperated with sliding slot 31.Under the mated condition of sliding rail 41 and sliding slot 31, the opposite sliding of astragalus support 4 and sliding mats 3
(scheme with the length direction (i.e. perpendicular to the paper direction of Fig. 3) and the length direction of shin bone broach 1 of groove 16 simultaneously in direction
Up and down direction shown in 3) it is vertical.
The cooperation of cooperation and sliding slot 31 and sliding rail 41 by protrusion 22 with groove 16 is, it can be achieved that ankle prosthesis 100
Proper motion, such as limited plantar flexion, dorsiflexion and interior movement of turning up can be done.Between tibial plate 2 and sliding mats 3, with cunning
The combination at the interface of the opposite sliding of two formed between dynamic pad 3 and astragalus support 4 also makes the kinematic axis of ankle prosthesis 100 exist
It is constantly converted in movement, is transferred to ankle week tissue so as to the distorting stress between each component by ankle prosthesis 100, reduces
Shear stress between ankle prosthesis 100 and shin bone 5 ensure that the stability that ankle prosthesis 100 is used for a long time.
Preferably, as shown in Figure 5 and Figure 6, the end face of the close sliding mats 3 of astragalus support 4 can be configured to convex towards sliding mats 3
The arcwall face 42 risen, sliding rail 41 are formed on arcwall face 42, and the length of sliding rail 41 can be greater than the length of sliding slot 31.It is set by this
Set, under the mated condition of sliding rail 41 and sliding slot 31, can make astragalus support 4 with sliding mats 3 opposite glide direction simultaneously with it is recessed
The length direction of slot 16 and the length direction of shin bone broach 1 are vertical, and the length of sliding rail 41 is greater than the length of sliding slot 31, also
The stability of the opposite sliding of the two can be made more preferable, while sliding mats 3 are not easy to take off during sliding relative to astragalus support 4
Out, to further ensure that the stability that ankle prosthesis 100 uses.
According to the utility model, as shown in Figure 1, being may also be formed on the side wall of the second broach 12 through the second broach 12
First suture hole 17 can be formed through the second suture hole 43 of astragalus support 4 on the outer wall of astragalus support 4, the second suture hole 43
Axis direction can be parallel with the length direction of groove 16.When the ankle-joint of human body needs to repair because of sufferer, or meet with tumour or
When comminuted fracture, the severe bone of the distal end for the shin bone for causing ankle-joint is tended to, serious bone defect holds
Easily lead to the joint capsule damage of ankle.It, can be by suturing soft tissue in the first suture hole 17 and the second seam by above-mentioned setting
Damaged joint capsule is repaired or rebuild between string holes 43, to be conducive to the post-operative recovery of patient.
Preferably, the first suture hole 17 being formed on the second broach 12 can be multiple, second be formed in astragalus support 4
Suture hole 43 can also be multiple.It is further preferred that the number in the first suture hole 17 being formed on the second broach 12 is smaller than
It is formed in the number in the second suture hole 43 in astragalus support 4, to make to suture by the first suture hole 17 and the second suture hole 43
Joint capsule and human body joint capsule it is increasingly similar, further to promote its motion function after being implanted into ankle prosthesis 100.
It is further preferred that the diameter range in the first suture hole 17 and the second suture hole 43 can be 2.5mm to 4mm；Further,
First suture hole 17 and the second suture hole 43 are specially the through-hole of the axial bending along corresponding hole, this has curved radian
The axial length range of through-hole can be 25mm to 40mm.The specific length value can suture curved according to used in sewing process
The diameter of needle and the curved radian for suturing looper determine, in order to which the operation of operation and soft tissue preferably suture.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.
Especially, as long as structural conflict is not present, items technical characteristic mentioned in the various embodiments can combine in any way
Get up.The utility model is not limited to specific embodiment disclosed herein, but including falling within the scope of the appended claims
All technical solutions.
Claims (10)
1. a kind of ankle prosthesis, which is characterized in that including,
Shin bone broach for being connected with shin bone, the shin bone broach include the first broach inside the pulp cavity of the shin bone
Be located at the shin bone pulp cavity outside and the second broach for being abutted with the end face of the shin bone,
The tibial plate being fixedly connected with second broach,
The sliding mats slid against with the tibial plate, and
One end is slidably connected with the sliding mats, and the other end is used for the astragalus support being connected with astragalus,
Wherein, the outer surface of first broach and/or second broach is formed with three-dimensional porous structure sheaf.
2. ankle prosthesis according to claim 1, which is characterized in that the three-dimensional porous structure sheaf includes a plurality of string diameter
Be crossed-over the multiple holes formed by a plurality of string diameter, each hole is interconnected, and each hole is equivalent
Diameter is different, wherein the equivalent diameter range of each hole is 100 μm to 400 μm, and the hole of the three-dimensional porous structure
The range of rate is 50% to 80%.
3. ankle prosthesis according to claim 2, which is characterized in that first broach and second broach it is outer
Surface is each formed with the three-dimensional porous structure sheaf, is formed in the solid of the outer surface of first broach and second broach
The thickness of porous structure layer is identical, and thickness range is 1mm to 3mm.
4. ankle prosthesis according to claim 3, which is characterized in that be formed in the more of the outer surface of first broach
The equivalent diameter of each hole in the stereochemical structure layer of hole is more than or equal to the porous three-dimensional for being formed in the outer surface of second broach
The equivalent diameter of each hole in structure sheaf.
5. ankle prosthesis according to claim 4, which is characterized in that be formed in the more of the outer surface of first broach
The range of the equivalent diameter of each hole in the stereochemical structure layer of hole is 200 μm to 400 μm, is formed in the appearance of second broach
The range of the equivalent diameter of each hole in the porous three dimensional structure layer in face is 100 μm to 200 μm.
6. ankle prosthesis according to any one of claim 1 to 5, which is characterized in that first broach, described
Two broach and the porous three dimensional structure layer are integrally formed, and first broach, second broach and described porous vertical
Body structure sheaf is made of titanium alloy material.
7. ankle prosthesis according to any one of claim 1 to 5, which is characterized in that second broach with it is described
The junction of first broach is formed with the platform for abutting with the end face of the shin bone.
8. ankle prosthesis according to claim 7, which is characterized in that the close tibial plate of second broach
Bottom end end face is fluted close to the upper setting in one of both top end faces of second broach with the tibial plate, another
The protrusion with groove cooperation is provided on person, under the protrusion and the mated condition of the groove, the protrusion can
Limit movement of the groove on the length direction along the shin bone broach.
9. ankle prosthesis according to claim 8, which is characterized in that the end close to the sliding mats of the astragalus support
Face and the sliding mats are formed with sliding slot on one of both end faces of the astragalus support, be formed in another one with
The sliding rail of the sliding slot cooperation, under the mated condition of the sliding rail and the sliding slot, the astragalus support and the sliding mats
Opposite glide direction is vertical with the length direction of the length direction of the groove and the shin bone broach simultaneously.
10. ankle prosthesis according to claim 9, which is characterized in that be also formed on the side wall of second broach
Through the first suture hole of second broach, the second suture of the astragalus support is formed through on the outer wall of the astragalus support
The axis direction in hole, second suture hole is parallel with the length direction of the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822022034.7U CN209678765U (en) | 2018-12-04 | 2018-12-04 | Ankle prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822022034.7U CN209678765U (en) | 2018-12-04 | 2018-12-04 | Ankle prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209678765U true CN209678765U (en) | 2019-11-26 |
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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 |
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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 |
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