CN209377811U - Type femoral bone end prosthesis - Google Patents
Type femoral bone end prosthesis Download PDFInfo
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- CN209377811U CN209377811U CN201821524390.2U CN201821524390U CN209377811U CN 209377811 U CN209377811 U CN 209377811U CN 201821524390 U CN201821524390 U CN 201821524390U CN 209377811 U CN209377811 U CN 209377811U
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- femoral bone
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- bone end
- femur
- end prosthesis
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Abstract
The utility model relates to medical instruments fields, disclose a kind of type femoral bone end prosthesis.The type femoral bone end prosthesis includes the neck of femur being sequentially connected and flat femoral stem, femoral stem includes the near end of thighbone section being connected with neck of femur and the distal femur section being connected near end of thighbone section, and near end of thighbone section includes the first medial surface and first lateral surface opposite with the first medial surface on the inside of human femur under loading.Wherein, the first medial surface is configured to the direction curved arcwall face of the first lateral surface, is formed with multiple first pressure steps that the length direction in arcuately face is set gradually on arcwall face.The type femoral bone end prosthesis of the utility model and the fixation of human femur under loading are more stable, can effectively improve the pain that type femoral bone end prosthesis mitigates patient while people's intracorporal service life.
Description
Technical field
The utility model relates to medical instruments field more particularly to a kind of type femoral bone end prosthesis.
Background technique
Hip replacement is also referred to as artificial hip joint replacing, is by artificial hip prosthesis (comprising type femoral bone end prosthesis and hip
Mortar prosthese) it is fixed on normal sclerotin in such a way that bone cement and screw are fixed, to replace the joint of lesion, rebuilds and suffer from
The normal function of person's hip joint is a kind of more mature reliable treatment means.
Suitability of the type femoral bone end prosthesis as important prosthese a kind of in hip replacement surgery, with the fixation of human femur under loading
It is particularly important with stability.As shown in figure 5, existing type femoral bone end prosthesis 100 ' generally includes the neck of femur 1 ' being sequentially connected, stock
Proximal bone 2 ' and distal femur 3 '.Although existing this type femoral bone end prosthesis 100 ' has easy to process, development cycle short excellent
Point.But in actual use, it can be seen that type femoral bone end prosthesis 100 ' be implanted into human body after, neck of femur 1 ' with acetabular bone edge shape
At angular interval in scope of activities it is limited, this adds increased the risks of acetabular bone dislocation, while being also unfavorable for Bone Ingrowth, cause
Type femoral bone end prosthesis 100 ' is easy to loosen；The straight in the outside 21 ' of near end of thighbone 2 ' designs so that type femoral bone end prosthesis 100 ' is being implanted into
When be easy to cause greater trochanter to fracture, it is higher to the operation level requirement of clinical doctor；In addition, the cylindrical design of distal femur 3 '
It is matched with the pulp cavity in human femur under loading bad, will affect pulp cavity blood supply.In addition, the obround design in the section of near end of thighbone 2 ',
And the cylindrical design of distal femur 3 ' makes the anti-rotation performance of type femoral bone end prosthesis 100 ' bad, short-term fixed effect is not
It is ideal.
In view of the deficiencies of the prior art, those skilled in the art is highly desirable seeks a kind of consolidating with human femur under loading
Fixed more stable type femoral bone end prosthesis, to mitigate the pain of patient while improving type femoral bone end prosthesis in people's intracorporal service life
It is bitter.
Utility model content
Mitigate the pain of patient in order to improve type femoral bone end prosthesis while people's intracorporal service life, the utility model mentions
A kind of and more stable type femoral bone end prosthesis of human femur under loading fixation is gone out.
Type femoral bone end prosthesis according to the present utility model, including the neck of femur being sequentially connected and flat femoral stem, femur
Handle includes the near end of thighbone section being connected with neck of femur and the distal femur section being connected near end of thighbone section, and near end of thighbone section includes leaning on
The first medial surface and first lateral surface opposite with the first medial surface on the inside of nearly human femur under loading, wherein the first inside surface construction
For towards the curved arcwall face of the first lateral surface, be formed with that the length direction in arcuately face sets gradually on arcwall face multiple the
One pressure step.
Further, each first pressure step runs through the width direction of arcwall face.Preferably, each first pressure step phase
It is mutually parallel.
Further, the height of each first pressure step is gradually reduced from top to bottom on the length direction in arcuately face.
Further, the first lateral surface is configured to the separate inclined inclined surface of first medial surface, be formed with edge on inclined surface
Multiple second pressure steps that the length direction of inclined surface is set gradually.Preferably, each second pressure step runs through inclined surface
Width direction.
Further, the height of each second pressure step is equal or the height of each second pressure step is along inclined surface
It is gradually reduced from top to bottom on length direction.
Further, near end of thighbone section further include the first surface that is connected between the first medial surface and the first lateral surface and
Ridge is formed on second surface, first surface and/or second surface.
Further, ridge includes the multiple spines set gradually along the length direction of first surface and/or second surface, respectively
Spine is horizontally or diagonally arranged.
Further, distal femur section include the first segment being connected near end of thighbone section and be connected with first segment second
Section, first segment includes the second medial surface being connected with the first medial surface, the second lateral surface for being connected with the first lateral surface, Yi Jifen
The third surface and the 4th surface not being connected with first surface and second surface, wherein the second medial surface and/or the second lateral surface
And/or the muscle of the length direction extension along distal femur section is provided on third surface and/or the 4th surface.
Further, the second medial surface and the second lateral surface are configured to tapered plane, the extending direction of the second medial surface with
The angular range of the tangential direction of the end of arcwall face is 10 ° to 20 °, the extending direction of the second lateral surface and the first lateral surface
The angular range of extending direction is 30 ° to 40 °.Preferably, the junction of the second lateral surface and the first lateral surface is formed with smoothly
Curved surface.
Further, second segment is configured to flat cone cell ontology, and cone cell ontology is tilted towards the inside of type femoral bone end prosthesis.
The type femoral bone end prosthesis of the utility model on the one hand by the way that the first medial surface of near end of thighbone section is configured to arcwall face,
The arcwall face is consistent at a distance from cortex bone on the inside of the lesser trochanter of human femur under loading, so that femoral stem be effectively ensured
Prosthese has preferable Bone Ingrowth under action of compressive stress to guarantee the stability of its initial stage fixation；On the other hand, due to femoral stem
After prosthese is in the femur of implantation human body, inside can bear main pressure, and by arcwall face length direction successively
Multiple first pressure steps, which are arranged, can effectively increase the anti-pressure ability of arcwall face, so that the inside of type femoral bone end prosthesis can be held
Continuous to bear biggish external force or bear biggish instantaneous pressure, this just greatly improves type femoral bone end prosthesis in human femur under loading
Stability and service life, can be effectively reduced due to the damage of type femoral bone end prosthesis self structure or be not fixed firmly is leaned on to patient with
Come painful；In addition, the type femoral bone end prosthesis of the utility model is also by (including near end of thighbone section and distal femur by femoral stem
Section) it is designed as flat, the anti-rotation of femoral stem is effectively improved, is being implanted into further improve type femoral bone end prosthesis
Stability after the femur of human body.
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 main view according to the structure of the type femoral bone end prosthesis of the utility model；
Fig. 2 is the side view according to the structure of the type femoral bone end prosthesis of the utility model；
Fig. 3 is the top view according to the structure of the type femoral bone end prosthesis of the utility model；
Fig. 4 is the schematic cross-section shown in FIG. 1 along the direction A-A；
Fig. 5 is the structural schematic diagram of the type femoral bone end prosthesis of the prior art.
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 to 3 shows the structure of type femoral bone end prosthesis 100 according to the present utility model.As shown in Figure 1, the femoral stem is false
Body 100 includes the neck of femur 1 being sequentially connected and flat femoral stem, femoral stem include the near end of thighbone being connected with neck of femur 1
Section 21 and the distal femur section 22 being connected near end of thighbone section 21, near end of thighbone section 21 include first on the inside of human femur under loading
Medial surface 211 and first lateral surface 212 opposite with the first medial surface 211.Wherein, the first medial surface 211 is configured to towards the
The curved arcwall face of one lateral surface 212, be formed on arcwall face the length direction (with reference to the up and down direction of Fig. 1) in arcuately face according to
Multiple first pressure steps 213 of secondary setting.
100 one side of type femoral bone end prosthesis of the utility model is by constructing the first medial surface 211 of near end of thighbone section 21
For arcwall face, which is consistent at a distance from cortex bone on the inside of the lesser trochanter of human femur under loading, so as to
Type femoral bone end prosthesis 100 is effectively ensured preferable Bone Ingrowth under action of compressive stress, to guarantee the stability of its initial stage fixation；Separately
On the one hand, after due to type femoral bone end prosthesis 100 in the femur of implantation human body, inside can be born (with reference to the right direction of Fig. 1)
Main pressure, and arc can be effectively increased by setting gradually multiple first pressure steps 213 by the length direction in arcwall face
The anti-pressure ability in face, so that the inside of type femoral bone end prosthesis 100 can continue to bear biggish pressure or bear biggish wink
When pressure, this just greatly improves stability and service life of the type femoral bone end prosthesis 100 in human femur under loading, can effectively drop
It is low that patient's bring pain is given due to the damage of 100 self structure of type femoral bone end prosthesis or be not fixed firmly is leaned on；In addition, the utility model
Type femoral bone end prosthesis 100 it is also flat by the way that femoral stem (include near end of thighbone section 21 and distal femur section 22) to be designed as,
The anti-rotation of femoral stem is effectively improved, to further improve type femoral bone end prosthesis 100 after the femur of implantation human body
Stability.
In the embodiment shown in fig. 1, each first pressure step 213 runs through the width direction of arcwall face.The arc
The width direction in face should be understood as the inward-outward direction perpendicular to paper of Fig. 1.By the setting, near end of thighbone section 21 can be improved
Entire arcwall face on anti-pressure ability, so that the inside of type femoral bone end prosthesis 100 be enable to continue to bear bigger external force or to hold
By bigger instantaneous pressure.Preferably, each first pressure step 213 can be parallel to each other, to improve entire arcwall face anti-pressure ability
Stability.It is further preferred that each first pressure step 213 can be horizontally disposed on arcwall face, also tiltable is arranged, preferably
It is horizontally disposed.
It is further preferred that the height of each first pressure step 213 on the length direction in arcuately face from top to bottom by
It is decrescence small.In use in view of type femoral bone end prosthesis 100, stress on the inside of substantially arcuately the length direction in face from upper
It is successively increased under and, distribution of each first pressure step 213 on the length direction in arcuately face can be made more by above-mentioned setting
To be intensive, to adaptively improve arcwall face in the crushing resistance from the top-down structure of its length direction.
According to the utility model, as shown in Figure 1, the first lateral surface 212 is configured to, separate first medial surface 211 is inclined to incline
Inclined-plane is formed with multiple second pressures that the length direction (with reference to the up and down direction of Fig. 1) along inclined surface is set gradually on inclined surface
Power step 214.By the setting, the setting of inclined surface can effectively avoid the near end of thighbone section 21 when installing type femoral bone end prosthesis 100
It interferes with greater trochanter, greater trochanter is damaged to can effectively avoid.And by the length direction of inclined surface according to
The secondary multiple second pressure steps 214 of setting, the second pressure step 214 are mainly used for bearing the drawing in 100 outside of type femoral bone end prosthesis
Power, setting can effectively increase the tensile capacity of inclined surface so that the outside of type femoral bone end prosthesis 100 can continue to bear compared with
Big pulling force bears biggish instantaneous pulling force, and it is steady in human femur under loading that this just further increases type femoral bone end prosthesis 100
Qualitative and service life can be effectively reduced due to the damage of 100 self structure of type femoral bone end prosthesis or be not fixed firmly is leaned on to patient
Bring pain.
Preferably, referring to figs. 1 and 2, each second pressure step 214 runs through the width direction of inclined surface.This inclines
The width direction on inclined-plane should be understood as the inward-outward direction perpendicular to paper of Fig. 1.By the setting, near end of thighbone section can be improved
Tensile capacity on 21 entire inclined surface, thus enable the outside of type femoral bone end prosthesis 100 continue to bear bigger pulling force or
Bear bigger instantaneous pulling force.Preferably, each second pressure step 214 can be parallel to each other, to improve entire inclined surface tension energy
The stability of power.It is further preferred that each second pressure step 214 can be horizontally disposed on inclined surface, also tiltable is arranged, excellent
Choosing is horizontally disposed.
It is further preferred that the height of each second pressure step 214 can be equal, it can also be in the length side along inclined surface
It is gradually reduced from top to bottom upwards.In use in view of type femoral bone end prosthesis 100, the pressure that inside is born is greater than it
The pulling force in outside, therefore the bearing capacity of the bearing structure (i.e. second pressure step 214) designed on inclined surface can be relative to
The tensile capacity for holding tension structure (i.e. first pressure step 213) designed on arcwall face is weaker, can design second at this time
Length direction of the height of pressure step 214 along inclined surface is equal from top to bottom.And in order to adapt to inclined surface in use process
In by pulling force the case where, the height of second pressure step 214 can be designed on the length direction along inclined surface from top to bottom gradually
Reduce, to further increase the tensile capacity of inclined surface.
According to the utility model, referring to figs. 1 and 2, near end of thighbone section 21 further includes being connected to the first medial surface 211
And the first first surface 216 and second surface 217 (as shown in Figure 2) between lateral surface 212, first surface 216 and/or second
Ridge 215 is formed on surface 217.Preferably, ridge 215 may include the length side along first surface 216 and/or second surface 217
To the multiple spines set gradually (with reference to the up and down direction of Fig. 2), each spine is horizontally or diagonally arranged.The setting of the ridge 215 can
Conducive to Bone Ingrowth of the type femoral bone end prosthesis 100 after being implanted into human femur under loading, to help to improve the fixation of type femoral bone end prosthesis 100
Stability.
According to the utility model, referring to figs. 1 and 2, distal femur section 22 may include being connected near end of thighbone section 21
First segment 221 and the second segment 222 that is connected with first segment 221, first segment 221 includes to be connected with the first medial surface 211
Two medial surfaces 2212, the second lateral surface 2211 being connected with the first lateral surface 212, and respectively with first surface 216 and second
Surface 217 connected third surface 2213 and the 4th surface 2214 (as shown in Figure 3).Wherein, as shown in connection with fig. 4, the second inside
It is provided on face 2212 and/or the second lateral surface 2211 and/or third surface 2213 and/or the 4th surface 2214 along distal femur
The muscle 223 that the length direction of section 22 extends.The setting of the muscle 223 can help to improve the anti-rotation of type femoral bone end prosthesis 100, from
And be conducive to further increase implantation stability of the type femoral bone end prosthesis 100 in the femur of human body.
In preferred embodiment as shown in Figure 1, the second medial surface 2212 and the second lateral surface 2211 are configured to tiltedly
Plane, the range of the angle β of the tangential direction of the end of the extending direction and arcwall face of the second medial surface 2212 are 10 ° to 20 °,
Preferably 15 °；The range of the angle α of the extending direction of the extending direction of second lateral surface 2211 and the first lateral surface 212 is 30 °
To 40 °, preferably 35 °.By the setting, so that the first segment 221 of distal femur section 22 is eccentric relative near end of thighbone section 21
Setting, i.e., so that the first segment 221 of distal femur section 22 towards type femoral bone end prosthesis 100 medial deviation, so as to make femoral stem
The contour structures of prosthese 100 are more adapted to the femur of human body, are conducive to the comfort and stability that improve its implantation.
Preferably, as shown in Figure 1, the junction of the second lateral surface 2211 and the first lateral surface 212 is formed with smooth song
Face.The smooth curved surface keeps the connection transition of the second lateral surface 2211 and the first lateral surface 212 gentler, can avoid to human body stock
The structure of bone damages.
Further, in the embodiment shown in fig. 1, the second segment 222 of distal femur section 22 can be configured to flat
Cone cell ontology, cone cell ontology are tilted towards the inside of type femoral bone end prosthesis.By the setting, so that the second segment of distal femur section 22
222 relative to 221 eccentric setting of first segment, i.e., so that the second segment 222 of distal femur section 22 is further towards type femoral bone end prosthesis
On the one hand 100 medial deviation, the setting can reduce the pressure in the outside of second segment 222, that is, reduce type femoral bone end prosthesis 100
On the other hand the pressure in outside also helps the bone after type femoral bone end prosthesis 100 is implanted into reduce the generation of patient thigh's pain
It grows into, to further improve the stability of its implantation.
In addition, as shown in Figure 1, the outer surface of the first segment 221 of near end of thighbone section 21 and distal femur section 22 can be coated with
Biological coating (such as HA coating or titanium and HA coating), to realize its corresponding biological fixation.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this reality
The ordinary meaning understood with novel one of ordinary skill in the art.
In the description of the present application, it is to be understood that term, " width ", " height ", "horizontal", " inclines at " length "
Tiltedly ", the orientation or positional relationship of the instructions such as " inside ", " outside " be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.The meaning of " plurality " is two in the description of the present invention,
More than, unless otherwise specifically defined.
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 type femoral bone end prosthesis, which is characterized in that including the neck of femur being sequentially connected and flat femoral stem, the femur
Handle includes the near end of thighbone section being connected with the neck of femur and the distal femur section that is connected with the near end of thighbone section, the femur
Proximal segment includes the first medial surface and first lateral surface opposite with first medial surface on the inside of human femur under loading,
In, first medial surface is configured to towards the curved arcwall face of the first lateral surface, is formed on the arcwall face along institute
State multiple first pressure steps that the length direction of arcwall face is set gradually.
2. type femoral bone end prosthesis according to claim 1, which is characterized in that each first pressure step runs through the arc
The width direction in shape face.
3. type femoral bone end prosthesis according to claim 2, which is characterized in that the height of each first pressure step is along institute
It states and is gradually reduced from top to bottom on the length direction of arcwall face.
4. type femoral bone end prosthesis according to any one of claim 1 to 3, which is characterized in that first outside surface construction
For far from the inclined inclined surface of the first medial surface, be formed on the inclined surface along the inclined surface length direction successively
The multiple second pressure steps being arranged.
5. type femoral bone end prosthesis according to claim 4, which is characterized in that the height of each second pressure step is equal,
Or the height of each second pressure step is gradually reduced from top to bottom on the length direction along the inclined surface.
6. type femoral bone end prosthesis according to any one of claim 1 to 3, which is characterized in that the near end of thighbone section is also wrapped
Include the first surface and second surface being connected between first medial surface and first lateral surface, the first surface
And/or ridge is formed on the second surface.
7. type femoral bone end prosthesis according to claim 6, which is characterized in that the ridge include along the first surface and/or
Multiple spines that the length direction of the second surface is set gradually, each spine are horizontally or diagonally arranged.
8. type femoral bone end prosthesis according to claim 6, which is characterized in that the distal femur section includes close with the femur
The end section first segment being connected and the second segment being connected with the first segment, the first segment includes being connected with first medial surface
The second medial surface, the second lateral surface for being connected with first lateral surface, and respectively with the first surface and described
Two surfaces connected third surface and the 4th surface, wherein second medial surface and/or second lateral surface and/or institute
State the muscle that the length direction extension along the distal femur section is provided on third surface and/or the 4th surface.
9. type femoral bone end prosthesis according to claim 8, which is characterized in that second medial surface and second lateral surface
It is configured to tapered plane, the angular range of the tangential direction of the end of the extending direction and arcwall face of second medial surface
It is 10 ° to 20 °, the angular range of the extending direction of the extending direction of second lateral surface and first lateral surface is 30 °
To 40 °.
10. type femoral bone end prosthesis according to claim 9, which is characterized in that the second segment is configured to flat cone cell sheet
Body, the cone cell ontology are tilted towards the inside of the type femoral bone end prosthesis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821524390.2U CN209377811U (en) | 2018-09-18 | 2018-09-18 | Type femoral bone end prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821524390.2U CN209377811U (en) | 2018-09-18 | 2018-09-18 | Type femoral bone end prosthesis |
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| Publication Number | Publication Date |
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| CN209377811U true CN209377811U (en) | 2019-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821524390.2U Active CN209377811U (en) | 2018-09-18 | 2018-09-18 | Type femoral bone end prosthesis |
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| CN (1) | CN209377811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259903A (en) * | 2018-09-18 | 2019-01-25 | 北京市春立正达医疗器械股份有限公司 | Type femoral bone end prosthesis |
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2018
- 2018-09-18 CN CN201821524390.2U patent/CN209377811U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259903A (en) * | 2018-09-18 | 2019-01-25 | 北京市春立正达医疗器械股份有限公司 | Type femoral bone end prosthesis |
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