CN106175993B - A kind of femoral stem for having breeze way - Google Patents
A kind of femoral stem for having breeze way Download PDFInfo
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- CN106175993B CN106175993B CN201510209712.9A CN201510209712A CN106175993B CN 106175993 B CN106175993 B CN 106175993B CN 201510209712 A CN201510209712 A CN 201510209712A CN 106175993 B CN106175993 B CN 106175993B
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- femoral stem
- gangbar
- breeze way
- elastomer
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Abstract
A kind of femoral stem for having breeze way, including：One metal body system containing a pilum portion, can be stretched into the pulp cavity of patient femur from metal material, in the top in the pilum portion, be available for connecting an artificial thigh bone, and in the bottom in the pilum portion, lengthways the axial gangbar person of projection one；And an elastomer, system PU elastomeric materials freely, through there is a perforation, to allow in the gangbar is placed through, and the preferable axial length of the elastomer is greater than 3 centimeters of persons；The gangbar has enough intensity except can provide lengthwise femoral stem, in addition, when the curved torque of the femoral stem generation flood tide being implanted in patient's pulp cavity, the gangbar can be with the pulp cavity of patient, flexibly extrude this section of elastomer, and buffer, offset whole femoral stem and stress that patient femur is born moment, avoid causing femur or femoral stem to be broken.
Description
Technical field
It is espespecially a kind of by through the connection in an elongated resilient body the present disclosure generally relates to a kind of femoral stem for having breeze way
Lever, the elastomer that links press on the pulp cavity of patient femur, to buffer the external force, avoid causing femoral stem with external force direction
Or human femur under loading fracture person.
Background technology
Due to the hipbone joint of human body, probably due to congenital hipbone arthrodyasplasia, degeneration, lesion or external force etc. are all
More reasons, cause the situations such as femoral head deformation, Acetabular Wear, have the leg of patient and ache, be bad in capable puzzlement.Current
Settling mode, most of is to bestow artificial Bones and joints replacement operation, makes patient without being subjected to because produced by hipbone arthropathy
Discomfort.Above-mentioned artificial Bones and joints replacement operation, is the femoral stem that a lengthwise is implanted into the femur of patient, then at the stock
Between the top of bone handle and acetabular bone, a femoral head is connected, completes this replacement operation.
As shown in figure 1, the femoral stem 50 applied at present, is integrally formed with metal material, in downward tapering shape, at it
Tail end is can be arranged with one to put middle ring 51；Before femoral stem 50 is inserted into the pulp cavity 41 of femur 40, it will usually in pulp cavity 41
Entrance inserts such as bone cement fixative P, and making the femoral stem 50, fixative P can riddle this after patient's pulp cavity 41 is inserted
Between femoral stem 50 and patient's pulp cavity 41, and by the peripheral support for putting middle ring 51 in pulp cavity 41, allow the femoral stem 50 certainly
It is dynamic to correct in the centre position of the pulp cavity 41, and complete the implant surgery of femoral stem 50.
But above-mentioned known femoral stem 50 is after the completion of operation, is to fill between the pulp cavity 41 of femoral stem 50 and patient femur 40
Full hard bone cement；When femoral stem 50 bears external force effect, the external force can be directed through hard fixative P transmission effect
In the femur 40 of the patient, have no the leeway and the effect that buffer external force.I.e. as shown in Fig. 2 when the top of femoral stem 50 is being born
After external force (F) effect, whole femoral stem 50 can be made to produce a curved torque M, the femoral stem 50 can be in the pulp cavity 41 of patient femur 40
It is interior to be urged towards side, in some medical cases, once occurred to occur because the curved torque of moment caused by femoral stem 50 (M) is excessive
The phenomenon that patient femur 40 is broken or femoral stem 50 is broken, artificial Bones and joints replacement operation is caused to fail；Study carefully its failure
Reason, it is main be because between femoral stem 50 and femur 40 when being acted on by external force without appropriate buffering, can not be by moment stress point
Dissipate, payment；Edge this, how to have necessary intensity concurrently and provide external force appropriate buffering, actually femoral stem 50 is badly in need of in design
The problem faced.
The content of the invention
In view of this inventor, is plus gives research and innovation, disclose the femoral stem of tool breeze way shown in the present invention.
The purpose of the present invention aim to provide it is a kind of have breeze way femoral stem, be including：One metal body, contain a pilum
Portion, it is available for stretching into the pulp cavity of patient femur, an artificial femur neck or one people of connection can be integrally projected in the top in the pilum portion
Work neck of femur, by the artificial thigh bone of artificial femur neck device one, separately in the bottom in the pilum portion, axially lengthwise projects one
Gangbar person；And an elastomer, system PU elastomeric materials freely, through there is a perforation, to allow in the gangbar is placed through,
Make the axial length of the elastomer be more than 3 centimeters, make the contact of the periphery of the elastomer with patient's pulp cavity inwall in large area, shape
Into buffering the breeze way person of external force.
The femoral stem of disclosed tool breeze way, the gangbar have enough strength supports except can provide femoral stem
In the person's of changing pulp cavity China and foreign countries, when human body makes femoral stem because of motion, when producing the curved torque of flood tide, the linkage positioned at metal body bottom
Bar can extrude the elastomer with femur relative resilient and buffer, offset whole femoral stem and patient is born pulp cavity moment should
Power, femur or the femoral stem is avoided to produce the situation of fracture.
The femoral stem of disclosed tool breeze way, is further provided with hand-hole in the metal body, and in the metal
Most extrusion cavities are provided with around body, order is respectively interconnected between the extrusion cavities and the hand-hole, in this way can be by the hand-hole
Fixative (water bone mud) is outwards extruded through the respectively extrusion cavities, because the fixative being extruded only oozes out, it is attached to be filled in extrusion cavities
Near scope, so as to limit the scope of fixative filling, the surface of elastomer is hardly attached to, except reaching fixed purpose
The outer function for also not interfering with elastomer normal elasticity deformation.
The femoral stem of disclosed tool breeze way, it is by having multi-layer microporous institute further to make around the metal body
The stereoscopic grid body of composition is formed；Or it is to be divided into multiple regions by multiple flanks to make around the metal body, order respectively should
Region is by having multi-layer microporous formed stereoscopic grid body institute constitutor.In this way, when patient bone hyperblastosis, newborn bone
Tissue can be grown so that the femur of the femoral stem and patient to be tightly embedded in scurrying between each layer micropore of each stereoscopic grid body
Together.
The femoral stem of disclosed tool breeze way, the wherein elastomer respectively should in its periphery formed with most conduits
Conduit is can be parallel to each other or staggeredly, the outer rim of the elastomer is formed plurality of fins shape so as to the spy flexibly deformed
Property, when being implanted into patient's pulp cavity, the shape of coincided with human body femur inner space can be formed to produce appropriate deformation, and
Clog in the femur of patient, make the present invention can be positively with patient femur be fixedly combined.
The femoral stem of disclosed tool breeze way, can be by the following description and accompanying drawings formula, and is able to apparent.
Brief description of the drawings
Fig. 1 is installed on the schematic diagram in the pulp cavity of femur for femoral stem in the prior art；
Fig. 2 is schematic diagram of Fig. 1 femoral stems when stress；
Fig. 3 is the perspective exploded view of the present invention；
Fig. 4 is stereogram of the present invention after combination；
Fig. 5 is socket cave and the decomposing schematic representation of gangbar of metal body of the present invention；
Fig. 6 is the schematic diagram that Fig. 5 inserts the fixing head of gangbar in socket cave；
Fig. 7 is gangbar of the present invention and the schematic diagram of second of assembling mode of metal body；
Fig. 8 is the schematic diagram of the third assembling mode of gangbar of the present invention Yu metal body；
Fig. 9 is the part section structural representation that the present invention is installed in femur；
Figure 10 is display Fig. 9 because being acted on by external force, and the schematic diagram of the elastic compression elastomer；
Figure 11 is to show the present invention to inject the inlet of fixative and extrusion structural representation；
Figure 12 is the three-dimensional exploded view of another embodiment of the present invention；
Figure 13 is part section structural representation of the embodiment illustrated in fig. 12 after assembling.
In figure：
(100) femoral stem (10) metal body (11) pilum portion
(111) artificial femur neck (112) artificial thigh bone (113) joining section
(113a) spine ring (12) hand-hole (13) extrusion cavities
(14) running channel (15) stereoscopic grid body (151) flank
(16) it is socketed cave (161) shoulder block portion (162) stopping cross-section
(163) inner bolt hole (163a) interior sets of holes (17) fixed screw
(20) gangbar (21) spiro rod section (22) block piece
(23) gland (231) stopping surface (24) spiro rod section
(24a) linking shaft part (30) elastomer (31) perforation
(32) conduit (40) femur
Embodiment
Refer to shown in Fig. 3,4,9 and Figure 13, present invention is directed to it is a kind of have breeze way femoral stem 100, be including：
It one metal body 10, can make from metal materials such as titanium alloy, Stainless Steels, containing a pilum portion 11, be available for stretching into patient femur 40
Pulp cavity 41 in, can integrally project one artificial femur neck 111 of an artificial femur neck or connection in the top in the pilum portion 11, can be by
By the artificial thigh bone 112 of 111 device of artificial femur neck one, and the bottom in the pilum portion 11 is that axially lengthwise projection one links
Bar；And an elastomer 30, system PU elastomeric materials freely, through there is a perforation 31, its axial length is more than 3 centimeters,
The periphery of the elastomer 30 is formed the contact of large area with the inwall of patient's pulp cavity 40, form to buffer the buffering of external force
Section.
Above-mentioned gangbar 20 is can be integrally formed with the metal body 10 or can be individual part out of the ordinary, and the present invention is simultaneously
Not from limit.
Present invention is directed to a kind of femoral stem for having breeze way, when patient motion causes to be implanted in patient's pulp cavity 40
Femoral stem 100 produce flood tide biased when, as shown in Figure 10, the gangbar 20 positioned at the bottom of metal body 10 can be with the femur
40 inwall of pulp cavity 41 extrudes the elastomer 30, and buffers, offsets whole femoral stem 100 and the moment of human femur under loading 40 born
Stress, thus can effectively avoid femur 40 or the situation of the femoral stem 100 fracture from occurring.
As shown in Figure 3,4, the femoral stem of disclosed tool breeze way, wherein around the metal body 10 at least
One region is that the stereoscopic grid body 15 formed by having most layer micropores is formed；Or make around the metal body 10 be by
Multiple flanks 151 are divided into multizone, and make respectively the region by having multi-layer microporous formed 15 constitutors of stereoscopic grid body.Such as
It is that, when patient bone hyperblastosis, each layer that newborn bone tissue can with deep-rooted scurry into each stereoscopic grid body 15 is micro-
Grown between hole, by the metal body 10 of the femoral stem 100 together with femur 40 tightly build-in.The above-mentioned respectively micropore
Aperture is can be between 200-650 μm.
As shown in Fig. 3,4,9, the femoral stem of disclosed tool breeze way, the wherein latter end of the gangbar 20 forms one
Spiro rod section 21, to connect a block piece 22, the external diameter of the block piece 22 is made more than the aperture of the perforation 31 of the elastomer 30, and block resistance exists
The bottom of the elastomer 30, to prevent the elastomer 30 slippage person.The modification still all right of above-mentioned block piece 22 is shaped in the linkage
The end of bar 20, the present invention is not from limit.
As shown in Fig. 3,5,6, the femoral stem of disclosed tool breeze way, wherein metal body 10 is provided with a set of
Cave 16 is connect, to be socketed the top of the gangbar 20 in consistent manner in interior；Wherein the bottom in the socket cave 16 is provided with shoulder block portion 161,
And it is provided with stopping cross-section 162 in the socket cave 16；And the top of the gangbar 20 is provided with a gland 23, the gland 23 is made
Root edge can be cross-placed in the shoulder block portion 161, and be provided with a stopping surface 231 in the periphery of the gland 23, make the gland 23
Outline shape coincide the section configuration that the socket cave 16 is located at the stopping cross-section 162, with the block resistance gangbar 20 in the set
Connect the internal rotation of cave 16.In this way, the stopping surface 231 of the gland 23 of the gangbar 20 can be aligned the system by the present invention in assembling
Behind dynamic section 162, penetrate in the socket cave 16, and the bottom of the gland 23 is cross-placed in the shoulder block portion 161, and make to wear
The gangbar 20 for going out the metal body 10 screws togather the block piece 22 after the elastomer 30, the elastomer 30 is stably positioned in this
Between the bottom of metal body 10 and the block piece 22.
As shown in Fig. 3,9,12, the present invention projects a joining section 113 in the bottom in the pilum portion 11 of the metal body 10, in
The outer rim of the joining section 113 is provided with most spine ring 113a, the top of the elastomer 30 is tightly placed in outside the joining section 113.
As shown in Figure 12,13, the present invention is still all right forms in the outer rim of gangbar 20 formed with spine ring 25, and in the top of the gangbar 20
There is linking shaft part 24a, the linking shaft part 24a for making the gangbar 20 is to be fixed on the bottom of metal body 10 with a fixed screw 17
One in sets of holes 163a, to be connected the elastomer by most spine rings 25 of the gangbar 20.Above-mentioned linking shaft part
24a systems can form one to the tapering axis of cone, and the interior sets of holes 163a systems form the taper hole of taper identical with linking shaft part 24a.
As shown in fig. 7, after the present invention top section still all right for making the gangbar 20 penetrates the pilum portion 11 of the metal body 10, footpath
A fixed screw 17 is locked in the pilum portion 11 and the gangbar 20 to ground；Or as shown in figure 8, the metal body 10 is made to be provided with
One inner bolt hole 163, with the spiro rod section 24 of the interlocking gangbar 20 top section in interior.The present invention is not from the metal body 10 is limited with joining
The connected mode of lever 20.
The femoral stem of disclosed tool breeze way, the wherein metal body 10 and the gangbar 20 can be one into
Type or respectively independent separation assembly, the present invention simultaneously not limit certainly.
As shown in figure 11, the femoral stem of disclosed tool breeze way is further provided with hand-hole in the metal body 10
12, and most extrusion cavities 13 are provided with around the metal body 10, make respectively between the extrusion cavities 13 and the hand-hole 12 with running channel
14 are interconnected, and are outwards extruded through the respectively extrusion cavities 13 after in this way fixative P can be injected by the hand-hole 12, and insert trouble
Between person's pulp cavity 41 and the metal body 10, to reach fixed purpose.
The femoral stem of disclosed tool breeze way, the wherein hand-hole 12 and between the extrusion cavities 13 be respectively respectively with one
Running channel 14 connects, and respectively the running channel 14 linearly or curve form can be such that injected fixative P is flowed via the respectively running channel 14
Extrude to corresponding extrusion cavities 13 out of the ordinary and outwards, be filled between the metal body 10 and the pulp cavity 41 of patient femur 40, avoid
Largely penetrate between the elastomer 30 and patient's pulp cavity 41, the elastomer 30 is normally elastically compressed, reach buffering
The purpose of active force；Above-mentioned hand-hole 12 it is still all right be spirally distributed in the metal body 10 and respectively with the respectively extrusion
Hole 13 connects, and injected fixative P is sequentially outwards extruded through each extrusion cavities 13 along spiral helicine hand-hole 12.
As shown in figure 12, it is disclosed tool breeze way femoral stem, wherein the elastomer 30 in its periphery formed with
Most conduits 32, respectively the conduit 32 is can be parallel to each other or the outer rim of the elastomer 30 is formed plurality of fins shape,
The elastomer 30 is set to obtain the characteristic flexibly deformed, can be appropriate to produce when in the pulp cavity 41 for being implanted into patient femur 40
Deformation, form the shape for the inner space of pulp cavity 41 that coincide and clog in the pulp cavity 41 of patient, alloing the present invention positively
It is fixedly combined with the femur 40 of patient.
The femoral stem of disclosed tool breeze way, as shown in Fig. 9,10, because the elastomer 30 is the gangbar 20
Run through, and there is extremely long axial length, allow the elastomer 30 in the contact of large area and riddle in pulp cavity 41, because
This is in addition to providing the enough intensity of long formula femoral stem, and when the metal body 10 is by external force F biaseds, gangbar 20 also can be by bullet
Property body 30 is extruded with M directions towards femur 40 in linkage, and now the elastomer 30 is just between the femur 40 of the gangbar 20 and patient
The contact of large area, and appropriate elastic deformation is produced, reach the effect of cushioning effect power, to avoid patient femur 40 or stock
The generation of the crack conditions of bone handle 100, and show the superiority of the present invention.
Disclosed structure, shape, application, this hair can be modified under the spirit and scope of the present invention in not disobeying
It is bright and not from limit.
Claims (12)
- A kind of 1. femoral stem for having breeze way, in the pulp cavity of implanted femur, it is characterised in that including：One metal body, contains There is a pilum portion, and in the bottom in the pilum portion, the gangbar of lengthways projection one；And an elastomer, own elasticity material processed, pass through A perforation is installed with, it is interior to allow the gangbar to be placed through, make its axial length be more than 3 centimeters, make the periphery and stock of the elastomer The pulp cavity inwall of bone, in the contact of large area, formed to buffer the breeze way of external force；The elastomer is in its periphery formed with more Number conduit, respectively the conduit is to be parallel to each other or staggeredly, the outer rim of the elastomer is formed plurality of fins shape.
- 2. the femoral stem of tool breeze way as claimed in claim 1, it is characterised in that an at least region around the metal body, It is to be made up of multi-layer microporous formed stereoscopic grid body.
- 3. the femoral stem of tool breeze way as claimed in claim 1, it is characterised in that the end of the gangbar connects a block piece, order The external diameter of the block piece is more than the piercing aperture of the elastomer and block resistance is in the bottom of the elastomer.
- 4. the femoral stem of tool breeze way as claimed in claim 1, it is characterised in that the pilum portion and the gangbar be one into Type.
- 5. the femoral stem of tool breeze way as claimed in claim 1, it is characterised in that the metal body is provided with a socket cave, the set Connect cave bottom and be provided with shoulder block portion, and stopping cross-section is provided with the socket cave, and the top of the gangbar is provided with a gland, order The root edge of the gland is cross-placed in the shoulder block portion, and is provided with a stopping surface in the periphery of the gland；Make the outer of the gland Profile shape coincide the shape of the socket acupuncture point at the stopping cross-section.
- 6. the femoral stem of tool breeze way as claimed in claim 1, it is characterised in that the pilum portion bottom of the metal body projects one Joining section, the outer rim of the joining section is made to be provided with multiple spine rings.
- 7. the femoral stem of tool breeze way as claimed in claim 1, it is characterised in that the top section of the gangbar penetrates the pilum portion In, and a fixed screw is radially locked in the pilum portion and the gangbar.
- 8. the femoral stem of tool breeze way as claimed in claim 1, it is characterised in that the pilum portion bottom of the metal body is provided with one Inner bolt hole, to the interlocking gangbar top section spiro rod section in interior.
- 9. the femoral stem of tool breeze way as claimed in claim 1, it is characterised in that the metal body is provided with hand-hole, and in this Multiple extrusion cavities are provided with around metal body, order is respectively interconnected between the extrusion cavities and the hand-hole with running channel.
- 10. the femoral stem of tool breeze way as claimed in claim 9, it is characterised in that the hand-hole is to be spirally distributed in this In metal body.
- 11. as claimed in claim 1 tool breeze way femoral stem, it is characterised in that the outer rim of the gangbar formed with spine ring, and In the top of the gangbar formed with linking shaft part, the linking shaft part of the gangbar is made to be fixed on the metal sheet with a fixed screw In the one of body bottom in sets of holes.
- 12. the femoral stem of tool breeze way as claimed in claim 11, it is characterised in that it is tapering upwards that the linking shaft part system forms one The axis of cone, and the interior sets of holes system forms the taper hole of taper identical with the linking shaft part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209712.9A CN106175993B (en) | 2015-04-29 | 2015-04-29 | A kind of femoral stem for having breeze way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209712.9A CN106175993B (en) | 2015-04-29 | 2015-04-29 | A kind of femoral stem for having breeze way |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106175993A CN106175993A (en) | 2016-12-07 |
| CN106175993B true CN106175993B (en) | 2018-04-03 |
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ID=57457467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510209712.9A Active CN106175993B (en) | 2015-04-29 | 2015-04-29 | A kind of femoral stem for having breeze way |
Country Status (1)
| Country | Link |
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| CN (1) | CN106175993B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108236529A (en) * | 2016-12-27 | 2018-07-03 | 重庆润泽医药有限公司 | A kind of bone surgery tantalum stick equipment |
| CN113081401B (en) * | 2019-12-23 | 2022-10-21 | 贵州澳特拉斯科技有限公司 | Flexible hip joint handle and flexible hip joint prosthesis adopting same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7468078B2 (en) * | 2003-07-03 | 2008-12-23 | Zimmer, Inc. | Modular hip prosthesis |
| CN101336847B (en) * | 2008-08-26 | 2010-06-23 | 北京天新福医疗器材有限公司 | Metal hip joint combined handle |
| CN203328867U (en) * | 2013-06-24 | 2013-12-11 | 重庆润泽医药有限公司 | Caput femoris implant |
| CN203388969U (en) * | 2013-08-14 | 2014-01-15 | 重庆润泽医药有限公司 | Hip joint femoral stem replacement |
| CN203609546U (en) * | 2013-11-08 | 2014-05-28 | 深圳先进技术研究院 | Artificial hip joint structure |
| CN203898501U (en) * | 2014-05-14 | 2014-10-29 | 北京威高亚华人工关节开发有限公司 | Cementless hip joint femoral component |
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2015
- 2015-04-29 CN CN201510209712.9A patent/CN106175993B/en active Active
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| CN106175993A (en) | 2016-12-07 |
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