CN208404992U - The distal femur prosthese using trabecular bone structure of bone reserve capacity can be increased - Google Patents
The distal femur prosthese using trabecular bone structure of bone reserve capacity can be increased Download PDFInfo
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- CN208404992U CN208404992U CN201720977391.1U CN201720977391U CN208404992U CN 208404992 U CN208404992 U CN 208404992U CN 201720977391 U CN201720977391 U CN 201720977391U CN 208404992 U CN208404992 U CN 208404992U
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- oversleeve
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Abstract
The utility model relates to the distal femur prostheses using trabecular bone structure that one kind can increase bone reserve capacity, are respectively equipped with one layer of trabecular bone structure on the anti-surface for revolving perpendicular ridge of broach needle body part and six and on two wall front of broach oversleeve and two side walls.Broach is screwed on broach oversleeve, and broach oversleeve is arranged on condyle of femur patch, and the central axis of lateral femoral condyle prosthesis is inserted into broach oversleeve by condyle of femur patch, and condyle of femur patch and the contact surface of lateral femoral condyle prosthesis are mutually fixed by bone cement.The structure of broach oversleeve is able to satisfy the use of different bone defect situations, and increasing prosthese in conjunction with bone trabecula surface has a mechanics stable point and the long access point of biology, improves prosthese initial stability and long-time stability, can effectively reduce prosthese mechanical complications.Condyle of femur patch not only acts as connection function, can fill up the generation that postoperative cavity avoids hematocele hydrops well, reduce infection.
Description
Technical field
It is to use the utility model relates to the distal femur prosthese using trabecular bone structure that one kind can increase bone reserve capacity
The revision procedure institute after femur condyle is primary or metastatic tumo(u)r excision Limb preservation, severe trauma bone repair, knee prosthesis
Caused by the condyle of femur artificial prosthesis rebuild of structural bone defect.
Background technique
With the development of surgery operating technology, the innovation of tumor imaging technology and the expansion of new adjuvant chemotherapy technology,
Limb-sparing surgery has become the mainstream treatment method of malignant bone tumor；Meanwhile the structural bone defect that severe trauma, inflammation are formed faces
It is also required to be rebuild to restore limb function on bed.Bone tumour is apt to occur in the good hair part of distal femur and metastatic carcinoma, with
Protect the development of limb technology, tumour joint reconstruction limbs have become main guarantor's limb mode.But the characteristics of because of oncotherapy
Cause tumour prosthetic designs huge, bone and surrounding soft tissue's excision are extensive.The present of the treatment of tumour in multidisciplinary high speed development
It, treatment level and technology have had significant progress.But there is lag in the development of existing tumour prosthese, many times
Because must not the normal bone of few cut-out without suitable tumour prosthese.It is huge for certain special tumour such as bones
The treatment of cytoma, surgical excision range can control within 5cm, but because without suitable prosthese, often
The normal bone of 10cm or more is also cut off in prosthese reconstruction operations, and giant cell tumor of bone patient is mostly youth, it is contemplated that survival
Phase is longer, stronger for the dependence in joint, and more bones retain the validity period that may extend prosthese, in some instances it may even be possible to reduce
The number of operation, stabilization and function these removed normal bones for prosthese be it is most valuable, although clinical use
The technology of homogeneous allogenic bone or autologous bone transplanting is coped with, but its effect is all unsatisfactory, and will increase some additional
Complication.Aspect is overhauled in wound repair and prosthese, the use of tumour prosthese is also required to often to complete to treat, but is similarly
The huge prosthetic component of placement must cut off normal bone more, although this can solve problem at the moment, long-term stabilization
Property be also affected because excessive bone is cut off.The root of problem is that the demand of design and the treatment of prosthese does not match, in knee
On condyle of femur and tibial plateau lower section is the region ignored in prosthese in joint, specifically for the artificial of femur condyle displacement
Prosthese.
It mainly include cement reaction and biological fixation two ways for the fixed form in joint prosthesis's prosthese,
The former is postoperative can to restore limb function in short term, but medium-long term prosthese crash rate is higher, and there is the wind for bone cement disease occur
Danger, failure mode show as aseptic loosening, fracture, dislocation etc..There are the possibility of Bone Ingrowth for the mode of biological fixation, can improve
Long-term stability in prosthese, but initial stability is not high, the influence factor for being grown into degree by the later period is more.Although the latter deposits
Increasingly received by patient and doctor in some drawbacks but this fixed form, is the hot spot of research.
Summary of the invention
The technical problem to be solved by the utility model is to for currently without specifically for femur condyle bone structure defect
The complication rates such as prosthetic loosening, fracture, surrounding fracture caused by the artificial prosthesis and Biomechanical factor of reconstruction are high,
The short deficiency of prosthese service life provides a kind of distal femur prosthese using trabecular bone structure that can increase bone reserve capacity,
The condyle of femur artificial prosthesis fully takes into account the morphological feature in region on condyle of femur, and designing biological fixation mode can be more
It is suitably used in the bony defect of distal femur, prosthese factor steady in a long-term is considered from design, from biomethanics more
Reasonable distribution torsion iso-stress, can satisfy the function of joint demand of requirements at the higher level, and be suitble to the limited disease of bone amount defect
Feelings.The case where condyle of femur artificial prosthesis can satisfy different distal femur bone defects using matched component and can improve
Prosthese initial stability, and then the high rate of complication is reduced, achieve the purpose that extend the prosthese service life.
To achieve the above object, used technical solution is the utility model: one kind can increase adopting for bone reserve capacity
With the distal femur prosthese of trabecular bone structure, including broach, lateral femoral condyle prosthesis, it is characterised in that: further include broach oversleeve, femur
Condyle patch；
The broach needle body part is that the cylinder of hexagon is respectively equipped with an anti-rotation on six faces of broach needle body part
Perpendicular ridge is equipped with one layer of trabecular bone structure on the anti-surface for revolving perpendicular ridge of broach needle body part and six, and broach needle body part one end is cylinder
Body, cylindrical body are equipped with external screw thread, and the broach needle body part other end is bullet-shaped body, and cross is equipped on bullet-shaped body and is handed over
Pitch gap；
Broach oversleeve top and bottom are oval face, and upper ellipse face is less than lower oval face, before broach oversleeve
Wall radian is less than rear wall radian, and two walls front and two sidewalls are step structure, is equipped on two walls front and two side walls
One layer of trabecular bone structure is equipped with taper connector on lower oval face, a rectangular preiection is symmetrically arranged in taper connection port,
Two rectangular preiection faces correspond respectively to the front face and rear surface of broach oversleeve, are equipped with hole I on upper oval face, in hole I
Equipped with one section of internal screw thread, hole I is communicated with taper connection port；
The condyle of femur patch is polygonal body, and condyle of femur patch is plane above and below, and condyle of femur patch is trapezoidal
Before shape and face of the subsequent lower end of trapezoidal shape in conjunction with lower plane is inclined-plane, and the two sides of condyle of femur patch are arc
Face is respectively equipped with several soft tissue reconstruction holes in the cambered surface of two sides, is respectively equipped with number on the subsequent two sides of condyle of femur patch
A soft tissue reconstruction hole, several soft tissue reconstruction holes in the cambered surface of two sides respectively with it is adjacent behind on several soft tissue reconstructions
Hole is correspondingly arranged and communicates, and the face between the adjacent several soft tissue reconstruction holes of two rows is rough surface, behind condyle of femur patch
The inclined-plane of lower end be equipped with rectangle recessed area, on condyle of femur patch lower plane be equipped with half slot, in half slot be equipped with above
The hole II that tapered hole communicates；
On the central axis of the lateral femoral condyle prosthesis, it is symmetrically arranged with two and matches with two rectangular preiections of broach oversleeve
Two card slots；
The broach is screwed on broach oversleeve by the cooperation that external screw thread and broach cover I internal screw thread of armhole, the broach
Oversleeve is equipped on condyle of femur patch by taper connector and condyle of femur patch tapered hole, the lateral femoral condyle prosthesis
Central axis is inserted into the taper connector of broach oversleeve by hole II below condyle of femur patch, two rectangular preiections of taper connector
It is installed in two card slots of central axis, before the trapezoidal shape of condyle of femur patch and the anteromedial surface of lateral femoral condyle prosthesis passes through bone
Cement is mutually fixed, and it is mutually solid that two inclined-planes of condyle of femur patch lead to bone cement with the preceding following and rear medial surface of lateral femoral condyle prosthesis respectively
It is fixed.
The beneficial effects of the utility model are: the form that this condyle of femur artificial prosthesis fully takes into account region on condyle of femur is special
Sign, provides with the close broach oversleeve of cortex inner cavity form on condyle of femur and meets the use of different bone defect situations, and set
The marrow inner surface that can enter cortex inner cavity is counted into, increasing prosthese in conjunction with bone trabecula surface has a mechanics stable point and biology long
Access point improves prosthese initial stability and long-time stability, so as to effectively reduce prosthese mechanical complications.Stock simultaneously
The design of bone condyle patch not only acts as connection function, and the shape of emulation can fill up postoperative cavity well and avoid hematocele hydrops
Generation reduce infection, and the reconstruction demand of surrounding tissue is considered in the reconstruction hole of side completely, is faced to more meet
The needs of bed.
Mostly use customized type to design in short, the utility model overcomes tumorous type knee-joint prosthesis used at present, i.e., it is false
The data such as backbone pulp cavity diameter, the osteotomy length that body producer need to provide according to doctor make, and patient is waiting for a long time not
Foot.This prosthese by condyle of femur patch and broach oversleeve different model assemble and the adjustment of broach length can to meet crowd poor
Indefinite sexual factor in different bring art, can satisfy the function of joint demand of requirements at the higher level, and be suitble to various bone amount defects
The state of an illness, so that the stability growth basis that prosthese is long-term while obtaining immediate postoperative stability and in being provided for, drop
Low prosthese medium-long term complication extends the prosthese service life, alleviates patient due to overhauling bring great pain, rebuilds hand
Art operation is relatively easy, and biomechanical strength compatibility is good, and prosthese initial stability and mid-long term stability are good, can be with difference
Model tibial prosthesis matches, and versatility is stronger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
The structural schematic diagram of Fig. 2 the utility model broach；
Fig. 3 is the enlarged drawing of Fig. 2A；
Fig. 4 is the side view of the utility model broach；
Fig. 5 is the structural schematic diagram of the utility model broach oversleeve；
Fig. 6 is the side view of the utility model broach oversleeve；
Fig. 7 is the top view of the utility model broach oversleeve；
Fig. 8 is the structural schematic diagram of the utility model condyle of femur patch；
Fig. 9 is the side view of the utility model broach oversleeve；
Figure 10 is the top view of the utility model broach oversleeve；
Figure 11 is the bottom view of the utility model broach oversleeve；
Figure 12 is the main view of the utility model lateral femoral condyle prosthesis；
Figure 13 is the rearview of the utility model lateral femoral condyle prosthesis；
Figure 14 is the side view of the utility model lateral femoral condyle prosthesis.
Specific embodiment
It is right with reference to the accompanying drawing to make those skilled in the art more fully understand the technical solution of the utility model
Specific embodiment of the present utility model is described further:
As shown in figs. 1 to 14, the distal femur prosthese using trabecular bone structure of bone reserve capacity, including marrow can be increased
Needle 1, lateral femoral condyle prosthesis 4 further include broach oversleeve 2, condyle of femur patch 3.
1 needle body part of broach is the cylinder of hexagon, and on six faces of 1 needle body part of broach, it is perpendicular to be respectively equipped with an anti-rotation
Ridge 1-1 is equipped with one layer of trabecular bone structure, 1 needle body part one end of broach on the anti-surface for revolving perpendicular ridge 1-1 of 1 needle body part of broach and six
For cylindrical body, cylindrical body is equipped with external screw thread 1-2, and the 1 needle body part other end of broach is bullet-shaped body, sets on bullet-shaped body
There is decussation gap 1-3.
2 top and bottom of broach oversleeve are oval face, and upper ellipse face is less than lower oval face, the antetheca of broach oversleeve 2
2-1 radian is less than rear wall 2-2 radian, and two walls front and two sidewalls are step structure, on two walls front and two side walls
Equipped with one layer of trabecular bone structure, it is equipped with taper connector 2-3 on lower oval face, is symmetrically arranged with one on 2-3 mouthfuls of taper connector
A rectangular preiection 2-3-1, two faces rectangular preiection 2-3-1 correspond respectively to the face antetheca 2-1 and the face rear wall 2-2 of broach oversleeve,
It is equipped with I 2-4 of hole on upper oval face, is equipped with one section of internal screw thread in I 2-4 of hole, I 2-4 of hole is communicated with 2-3 mouthfuls of taper connector.
Condyle of femur patch 3 is polygonal body, and condyle of femur patch 3 is plane, 3 trapezoidal shape of condyle of femur patch above and below
Before behind 3-1 and trapezoidal shape face of the lower end in conjunction with lower plane of 3-2 be inclined-plane 3-3, the two sides of condyle of femur patch 3
Face is cambered surface, and several soft tissue reconstruction hole 3-8 are respectively equipped in the cambered surface of two sides, the two sides of 3-2 behind condyle of femur patch 3
Several soft tissue reconstruction hole 3-8 are respectively equipped on face, several soft tissue reconstruction hole 3-8 in the cambered surface of two sides respectively with it is adjacent after
Several soft tissue reconstruction hole 3-8 on the 3-2 of face are correspondingly arranged and communicate, between the adjacent several soft tissue reconstruction hole 3-8 of two rows
Face be rough surface, rectangle recessed area 3-4 is equipped with behind the condyle of femur patch 3 on the inclined-plane 3-3 of lower end, under condyle of femur patch 3
Plane is equipped with half slot 3-5, and II 3-7 of hole communicated with tapered hole 3-6 above is equipped in half slot 3-5.
On the central axis 4-1 of lateral femoral condyle prosthesis 4, it is symmetrically arranged with two two rectangular preiection 2-3-1 phases with broach oversleeve 2
Two card slot 4-1-1 of cooperation.
Broach 1 is screwed on broach oversleeve 2 by the cooperation of I 2-4 internal screw thread of external screw thread 1-2 and 2 hole of broach oversleeve, marrow
2 being equipped on condyle of femur patch 3 by taper connector 2-3 and 3 tapered hole 3-6 of condyle of femur patch of needle guard sleeve.By stock
The central axis 4-1 of bone condyle prosthese 4 is inserted into the taper connector 2-3 of broach oversleeve 2 by II 3-7 of hole below condyle of femur patch 3,
Two rectangular preiection 2-3-1 of taper connector 2-3 are installed in two card slot 4-1-1 of central axis 4-1, condyle of femur patch 3
The anteromedial surface 4-2 of 3-1 and lateral femoral condyle prosthesis 4 are mutually fixed by bone cement before trapezoidal shape, and two of condyle of femur patch 3 are tiltedly
Face 3-3, which leads to bone cement with the preceding 4-3 and rear medial surface 4-4 below of lateral femoral condyle prosthesis 4 respectively, mutually to be fixed.
The formation of trabecular bone structure: surface sprays one layer of metal or 3D printing constitutes imitative trabecular bone structure.
Broach 1, broach oversleeve 2, condyle of femur patch 3 material be titanium alloy.
4 material of lateral femoral condyle prosthesis is vitallium.
The design of broach 1 improves, and the tuning fork structure of decussation gap 1-3 is equipped on 1 bullet-shaped body of broach, easily
In insertion pulp cavity and reduce thigh pain caused by stress.
Ridge 1-1 is erected in anti-rotation on 1 needle body part of broach, six faces, and the anti-rotation intensity after prosthese merging can be improved increases
Anti-rotation effect of the broach 1 in pulp cavity.
Surface trabecular bone structure can be grown in this way with the true bone trabecula of infinite approach to stimulate growing into for osteocyte
The biological fixation of phase increases the stabilization and effective utilization of prosthese.
Broach 1 is bonded together by being press-fitted with pulp cavity, provides the incipient stability of prosthese in conjunction with broach oversleeve 2 press-fitting force
Property.
The structure of broach oversleeve 2 designs, and is that we are obtained by morphometry strong in cortex on Normal condyle of femur
Morphological data and statistical classification and design construction.It is more in line with the cortex inner cavity form in region on normal population condyle of femur,
Based on trapezium structure, so the component of special shape design can obtain more matched effect, when broach oversleeve 2 is inserted into femur
When condyles, the compressed cancellous bone of surrounding, which can fill up gap around and preferably contact to enhance, puts heavy function, while stable pressure
With high-intensitive anti-spin can be provided, anti-rotation can be increased on mechanics, the ability of stretch-proof can also reduce the concurrent of prosthese
Disease.The surface of broach oversleeve 2 is the gradually broadening step structure of trabecular bone structure, and it is high that this design can satisfy various osteotomy
The demand of degree can connect when osteotomy is excessive as extendible portion, and osteotomy can choose big-and-middle small size suitable part and insert when few
Enter cortex chamber, play anti-rotation and increase steady effect, in addition the growth of the trabecular bone structure stimulation bone bridge on surface, real stable dispersion are answered
The effect of power.4 two card slot 4-1-1 occlusion structures of two rectangular preiection 2-3-1 and lateral femoral condyle prosthesis, play rotation prevention and
Conduction, so that strength stable allocation avoids concentrating the generation being broken between component.
The structure of condyle of femur patch 3 designs, and is not yet to be occurred meeting the benefit of kneecap slideway height according to current prosthese
Block, for most prosthesis systems using gasket as what is proposed by the way of making up, condyle of femur patch 3 is as broach oversleeve on condyle of femur
Excessive design is dissected between 2 and 4 articular surface of lateral femoral condyle prosthesis, this meets human body knee joint design feature, ensures knee joint peripheral
The tension distribution of ligament and muscle, while the structure design of several soft tissue reconstruction hole 3-8 of two sides, can flexibly rebuild knee pass
The start-stop points such as section residual ligament and muscle Quadriceps mechanism, can be used as the start-stop point booster action of reconstruction, and two adjacent numbers of rows
Face between a soft tissue reconstruction hole 3-8 is rough surface, achievees the effect that growth is stable conducive to tissue adhesion, the shape of emulation is set
Meter can reduce the generation for avoiding increasing because of sludging the infection of joint with filling space, can flexible reconstruction of knee
Remain the start-stop points such as ligament and muscle Quadriceps mechanism.
Lateral femoral condyle prosthesis 4 is common surface knee joint femoral end.The upper two card slot 4- of 4 central axis 4-1 of lateral femoral condyle prosthesis
1-1 design, with 2 two rectangular preiections of broach oversleeve
Fit structure plays the prevention and conduction of rotation, so that strength stable allocation avoids concentrating fracture between component
Occur.Connecting hole 4-5 can connect (rotation) hinge knee joint system that is combined by hinge with common tibial component, and front is closed
Nodal section 4-6, lower section articular surface 4-7, condyles articular surface 4-8 are designed using general femoral condyles face, using this general femur
The reason of facies artieularis malleolaris is versatile, smooth fossa intercondyloidea incisura, improves kneecap incisura when high buckling, and outer ledge is soft
It is suitable, better soft tissue protection can be provided.
The anteromedial surface 4-2 of 3-1 and lateral femoral condyle prosthesis 4 realize gapless connect before the trapezoidal shape of condyle of femur patch 3
Touching, two inclined-plane 3-3 of condyle of femur patch 3 are realized continuously with the preceding 4-3 and rear medial surface 4-4 below of lateral femoral condyle prosthesis 4 respectively
The contact of gap, and mutually fixed by bone cement, it can be to avoid the displacement between component.
The application method of the distal femur prosthese using trabecular bone structure of bone reserve capacity can be increased, steps are as follows:
This prosthese is applied to the treatment that the tumour, wound, skeleton animation prosthese of distal femur are rebuild, first by taking tumour as an example
First after the bone and tissue of tumor resection invasion, expands marrow device using speciality and expand distal section pulp cavity in femoral shaft, complete pulp cavity
Expand marrow using expansion marrow device dedicated on condyle of femur after expansion marrow, select the broach 1 and broach oversleeve 2 2mm bigger than maximum expansion marrow diameter,
It is inserted on pulp cavity and condyle after broach 1 and broach oversleeve 2 are threadedly coupled by expansion pith cavity, is wanted when the insertion sclerotin of broach oversleeve 2 reaches
After asking, needs to check whether to extract or exist easily and shake, reach stable if it cannot extract easily and shaking also is not present
Effect, using broach 1, the perfect matching of the shape of broach oversleeve 2 and skeletal shape, two be in press-fitting under reach stable, and
It is grown into for long-term biology and basis is provided, because the shape of broach oversleeve 2 has good anti-rotation effect.
Selection and the matched lateral femoral condyle prosthesis 4 of broach oversleeve 2 and suitable condyle of femur patch 3 in vitro, in condyle of femur
Cement is inserted on the central axis 4-1 of lateral femoral condyle prosthesis 4 again after smearing on patch 3 front 3-1 and two inclined-plane 3-3, is made
Before condyle of femur patch 3 the anteromedial surface 4-2 of 3-1 and lateral femoral condyle prosthesis 4 realize it is gapless contact, condyle of femur patch 3
Two inclined-plane 3-3 realized respectively with the preceding 4-3 and rear medial surface 4-4 below of lateral femoral condyle prosthesis 4 it is gapless contact, then by femur
Condyle prosthese 4 is fixed on broach oversleeve with cooperation by the cone of 3 tapered hole 3-6 of condyle of femur patch and 2 taper connector 2-3 of broach oversleeve
On 2, it is inserted into the central axis 4-1 of lateral femoral condyle prosthesis 4 in 2-3 mouthfuls of taper connector of broach oversleeve 2, two of taper connector 2-3
Rectangular preiection 2-3-1 is installed in two card slot 4-1-1 of central axis 4-1.
It is assembled finally by the connecting shaft hole 4-5 in lateral femoral condyle prosthesis 4 with shin bone partial joint accessory common in clinic,
It is combined into mobilizable knee-joint prosthesis.
In the case where above connection and assembling installation, all parts are all very matched to be mounted on bone, and for knee
The compression that is likely to occur under joint part active characteristics, traction, rotation stress can conduct between prosthese and sclerotin well,
Imitation body biomechanics feature as far as possible, avoids the generation of complication.
The installation of condyle of femur patch 3 is and to can be very good to connect in order to avoid the appearance in a large amount of gaps of femur condyle
Broach oversleeve 2 and lateral femoral condyle prosthesis 4 become an entirety, and stress can also be conducted by condyle of femur patch 3, play and avoid stress
The effect for leading to fracture is concentrated, can be repaired around reconstruction of knee by the soft tissue reconstruction hole 3-8 of 3 side of condyle of femur patch
The Quadriceps mechanisms such as remaining ligament, tendon and joint capsule play the function of reinforcement and Saving cortilage.
It is to be illustrated to the preferable implementation of the utility model, but the utility model creation is not limited to institute above
Embodiment is stated, those skilled in the art can also make various be equal without departing from the spirit of the present invention
Deformation or replacement, these equivalent deformation or replacement are all contained within the claim of this application limited range.
Claims (1)
1. one kind can increase the distal femur prosthese using trabecular bone structure of bone reserve capacity, including the vacation of broach (1), condyle of femur
Body (4), it is characterised in that: further include broach oversleeve (2), condyle of femur patch (3)；
Broach (1) needle body part is the cylinder of hexagon, on six faces of broach (1) needle body part, is respectively equipped with one and prevents
Perpendicular ridge (1-1) is revolved, is equipped with one layer of trabecular bone structure, broach on the anti-surface for revolving perpendicular ridge (1-1) of broach (1) needle body part and six
(1) needle body part one end is cylindrical body, and cylindrical body is equipped with external screw thread (1-2), and broach (1) the needle body part other end is bullet-shaped
Body is equipped with decussation gap (1-3) on bullet-shaped body；
Broach oversleeve (2) top and bottom are oval face, and upper ellipse face is less than lower oval face, broach oversleeve (2)
Antetheca (2-1) radian is less than rear wall (2-2) radian, and two walls front and two sidewalls are step structure, in two walls front and two
Side wall surface is equipped with one layer of trabecular bone structure, taper connector (2-3) is equipped on lower oval face, in taper connector (2-3) mouth
On be symmetrically arranged with a rectangular preiection (2-3-1), two rectangular preiection (2-3-1) faces correspond respectively to the antetheca of broach oversleeve
The face (2-1) and the face rear wall (2-2) are equipped with hole I (2-4) on upper oval face, one section of internal screw thread, hole I are equipped in hole I (2-4)
(2-4) is communicated with taper connector (2-3) mouth；
The condyle of femur patch (3) is polygonal body, and condyle of femur patch (3) is plane, condyle of femur patch (3) above and below
Face of the lower end of (3-2) in conjunction with lower plane is inclined-plane (3-3), femur behind (3-1) and trapezoidal shape before trapezoidal shape
The two sides of condyle patch (3) are cambered surface, several soft tissue reconstruction holes (3-8) are respectively equipped in the cambered surface of two sides, in condyle of femur
Patch (3) is respectively equipped with several soft tissue reconstruction holes (3-8) on the two sides of (3-2) below, and several soft groups in the cambered surface of two sides
Knit rebuild hole (3-8) respectively with it is adjacent behind several soft tissue reconstruction holes (3-8) on (3-2) be correspondingly arranged and communicate, phase
Face between the adjacent several soft tissue reconstruction holes (3-8) of two rows is rough surface, on the inclined-plane of condyle of femur patch (3) back lower end
(3-3) is equipped with rectangle recessed area (3-4), half slot (3-5) is equipped on condyle of femur patch (3) lower plane, at half slot (3-5)
It is interior equipped with the hole II (3-7) communicated with tapered hole above (3-6)；
On the central axis (4-1) of the lateral femoral condyle prosthesis (4), it is symmetrically arranged with two two rectangular preiections with broach oversleeve (2)
Two card slots (4-1-1) that (2-3-1) is matched；
The broach (1) is screwed onto broach oversleeve by the cooperation of I (2-4) internal screw thread of external screw thread (1-2) and broach oversleeve (2) hole
(2) on, the broach oversleeve (2) is equipped with by taper connector (2-3's) and condyle of femur patch (3) tapered hole (3-6)
Above, the central axis (4-1) of the lateral femoral condyle prosthesis (4) passes through hole II below condyle of femur patch (3) to condyle of femur patch (3)
(3-7) is inserted into the taper connector (2-3) of broach oversleeve (2), and two rectangular preiections (2-3-1) of taper connector (2-3) clamp
In two card slots (4-1-1) of central axis (4-1), (3-1) and lateral femoral condyle prosthesis before the trapezoidal shape of condyle of femur patch (3)
(4) anteromedial surface (4-2) is mutually fixed by bone cement, and two inclined-planes (3-3) of condyle of femur patch (3) are false with condyle of femur respectively
Preceding (4-3) below and rear medial surface (4-4) of body (4), which lead to bone cement, mutually to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720977391.1U CN208404992U (en) | 2017-08-07 | 2017-08-07 | The distal femur prosthese using trabecular bone structure of bone reserve capacity can be increased |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720977391.1U CN208404992U (en) | 2017-08-07 | 2017-08-07 | The distal femur prosthese using trabecular bone structure of bone reserve capacity can be increased |
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| Publication Number | Publication Date |
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| CN208404992U true CN208404992U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720977391.1U Withdrawn - After Issue CN208404992U (en) | 2017-08-07 | 2017-08-07 | The distal femur prosthese using trabecular bone structure of bone reserve capacity can be increased |
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| CN (1) | CN208404992U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107361881A (en) * | 2017-08-07 | 2017-11-21 | 胡永成 | A kind of distal femur prosthese using trabecular bone structure for increasing bone reserve capacity |
| CN111467088A (en) * | 2020-05-18 | 2020-07-31 | 四川大学华西医院 | 3D prints porous imitative trabecula arc intramedullary handle |
-
2017
- 2017-08-07 CN CN201720977391.1U patent/CN208404992U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107361881A (en) * | 2017-08-07 | 2017-11-21 | 胡永成 | A kind of distal femur prosthese using trabecular bone structure for increasing bone reserve capacity |
| CN107361881B (en) * | 2017-08-07 | 2023-11-24 | 胡永成 | Femur far-end prosthesis capable of increasing bone preservation quantity and adopting bone trabecular structure |
| CN111467088A (en) * | 2020-05-18 | 2020-07-31 | 四川大学华西医院 | 3D prints porous imitative trabecula arc intramedullary handle |
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Granted publication date: 20190122 Effective date of abandoning: 20231124 |