CN208435761U - Edge structure, hip screw and femoral fracture therapeutic device - Google Patents
Edge structure, hip screw and femoral fracture therapeutic device Download PDFInfo
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- CN208435761U CN208435761U CN201720963117.9U CN201720963117U CN208435761U CN 208435761 U CN208435761 U CN 208435761U CN 201720963117 U CN201720963117 U CN 201720963117U CN 208435761 U CN208435761 U CN 208435761U
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- cutter groove
- edge structure
- hip screw
- blade
- center
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Abstract
The utility model discloses a kind of edge structure, hip screw and femoral fracture therapeutic devices, its ontology is with the radiosymmetric cross section in center, the radiosymmetric part in each center is distributed at least one cutter groove and is formed in the blade on cutter groove two sidewalls top on the edge structure, and the projection on the top of the blade falls in the inside of the cutter groove slot bottom.Edge structure provided by the utility model has the big special construction in small inner cavity that is open, it will not rotate easily so that fixing the unstable problem in position, it also avoids there is the femoral fracture therapeutic device of such blade type structure hip screw to position in the long-term use more longlasting, it is ensured that the normal healing of bone.
Description
Technical field
The utility model relates to medical instrument, in particular to a kind of edge structure, and the hip spiral shell with the edge structure
Nail and femoral fracture therapeutic device.
Background technique
On medical significance, femoral fracture is a kind of disease for causing human thigh's bone parts or complete rupture due to wound
Disease.So-called " 100 days injured in the sinews or bones ", femoral fracture are even more to be difficult to restore, and fracture makes people very painful, handicapped and recovery
Phase is longer.Treatment femoral fracture need to follow reset, fixation, functional training this three basic principles, wherein resetting is after fracturing
The femur broken ends of fractured bone being displaced restores its normal position or again close to normal position, to restore the supporting role of femur again.
To make the skeleton structure after rectification and recovery carry out position holding, it will usually use femoral fracture therapeutic device.
Femoral fracture usually occurs in neck of femur and trochanteric region.In general, trochanter and time trochanter femoral fracture are currently used
Intramedullary nail is treated, which has the cross drilling for accommodating bone fastener.Intramedullary nail is assembled in the pulp cavity of femur
In, can play the role of part prevents fracture site from reversing, and hip screw passes through cross drilling, the neck by femur of intramedullary nail
And enter in femoral head, hip screw usually rotatably enters in femoral head in the process, and is being installed to
Behind position, intramedullary nail cannot be rotated mutually with hip screw.It is general using the setting positioning in intramedullary nail in order to realize this requirement
Bolt positions the hip screw across cross-drilled hole, to prevent the relative movement or rotation of intramedullary nail and hip screw, or hip screw is set
Being set to non-circular shape prevents its rotation, but these measures still cannot fully control the rotation of fracture site, lateral fine motion etc.
Problem, and loosened due to reversing position portion gradually for a long time in use, easily lead to hip screw hair
Life rotationally and axially deviates, and delays bone healing process.
Utility model content
Based on this, it is necessary to for the hip screw mentioned above unstable problem in position in the long-term use, mention
For a kind of edge structure, and the hip screw with the edge structure, and accordingly provide a kind of including such structure hip screw
Femoral fracture therapeutic device.
A kind of edge structure, ontology have the radiosymmetric cross section in center, each center on the edge structure
Radiosymmetric part opens up at least one cutter groove and the blade for being formed in cutter groove two sidewalls top, the top of the blade
Projection fall in the inside of the cutter groove slot bottom.
Its ontology is the cross section with circular contour in one of the embodiments, be distributed on the edge structure to
A few cutter groove and the blade for being formed in cutter groove two sidewalls top, the cross section of the cutter groove is by the blade to slot bottom shape
Two first circles at the first circular arc being located in space defined by the cutter groove with the center of circle, in the same cutter groove
Arc is located at the second circular sliding slopes of the cross section the center point of the ontology with the center of circle.
There are three the cutter groove is set in one of the embodiments,.
In one of the embodiments, the cutter groove be linear type cutter groove, the cutter groove the cutter groove bottom end with
The outer surface smoother transition of the edge structure ontology.
The cutter groove is the screw type cutter groove with predetermined lead angle in one of the embodiments,.
The utility model provides a kind of hip screw, including blade part and interconnecting piece, and the blade part includes as above any
The edge structure.
The hip screw is equipped with along the perforative through-hole of its center line in one of the embodiments,.
Further, several perforative circular holes are equipped on the blade of edge structure.
Further, several perforative circular holes also are provided in the cutter groove bottom end of the edge structure, the circular hole leads to institute
State through-hole.
The utility model additionally provides a kind of femur therapeutic device, and the femur therapeutic device contains as above any described
Hip screw.
Locating slot is provided on the interconnecting piece in one of the embodiments, the locating slot is arranged in the hip
The surface of screw, the length direction of locating slot are consistent with the hip screw length direction.
Further, the end face on the plane parallel with the locating slot and the interconnecting piece top is in pre-determined tilt angle.
The bottom surface of the locating slot is arc-shaped in one of the embodiments,.
The utility model has an edge structure of distinctive appearance and realizes the steady of structural body and bony structures by designing
Consolidation is closed, which is set to cutter groove two sidewalls top for blade, and the projection on top falls in the inside of cutter groove slot bottom, shape
At the special construction small and that inner cavity is big that is open, so that having the hip screw of the blade type structure after being embedded in bony structures and sclerotin
Structure combines closer, will not rotate easily so that the problem for keeping fixed position unstable, also makes have such blade type
The femoral fracture therapeutic device of structure hip screw positions more longlasting in the long-term use, it is ensured that the normal healing of bone.
Detailed description of the invention
Fig. 1 is edge structure cross-sectional view in an embodiment of the present invention；
Fig. 2 is the main view of hip screw in an embodiment of the present invention；
Fig. 3 is the cross-sectional view of hip screw in an embodiment of the present invention；
Fig. 4 is the main view of hip screw in another embodiment of the utility model.
Specific embodiment
The utility model is further described with exemplary embodiment with reference to the accompanying drawing, it is wherein identical in attached drawing
Label all refers to identical component.In addition, if the detailed description of known technology is for showing the feature of the utility model
Be it is unnecessary, then omit it.
The utility model provides a kind of edge structure 10, as shown in Figure 1, the ontology of edge structure 10 is with center spoke
Symmetrical cross section is penetrated, such cross section can be common circle, square, equilateral triangle etc., be also possible to ellipse
Shape, rectangle etc..The radiosymmetric part in each center is distributed at least one cutter groove 100 and is formed in cutter groove on edge structure 10
The blade 200 of 100 two sidewalls top, i.e. blade 200 are distributed in the edge of cutter groove 100, and concentrate on 100 two sidewalls of cutter groove
Top, and the top of blade requires its projection to fall in the inside of cutter groove slot bottom, namely forms the structure that mouth is small and inner cavity is big.This reality
It is a kind of cutter structure of embedded type with the edge structure 10 of novel offer, this cutter structure is applied to hip screw, Neng Gouman
The job requirement of sufficient hip screw, the ideal operation state of hip screw be built-in it is stationary in object, at least in edge structure
10 be radially able to maintain is static, i.e., will not be because of the rotation for being generated rich axis by external interference easily, and the edge structure
With the structure small and that inner cavity is big that is open, therefore after being embedded in object, more object bodies can be full of in cutter groove 100, it can
Bigger resistance is generated to the rotation of cutter, it is avoided to occur radial shift in position easily.
The big structure in this small inner cavity of mouth has very much, and as a preferred scheme, the ontology of edge structure 10 has circle
The cross section of shape profile, and the cross-sectional profiles shape of cutter groove 100 is not straight outline, i.e., and it is not all by linear side
Or be made of the angle that linear side is formed, specifically, the cross section of edge structure 10 is formed by blade 200 to slot bottom with the center of circle
The first circular arc 110 in the space defined by the cutter groove 100, two the first circular arcs 110 in the same cutter groove 100 are with the center of circle
The second circular arc 120 positioned at the cross section the center point of ontology connects, what the section of cutter groove 100 was connected by second circular arc 120
Two the first circular arcs 110 are constituted, i.e., the cross section of cutter groove 100 is made of two the first circular arcs 110 and second circular arc 120,
Two the first circular arcs 110 are separately connected by the second circular arc 120, two corresponding centers of circle of the first circular arc 110 are all in a certain straight line
It is ipsilateral, and the corresponding center of circle of the second circular arc 120 is in the other side of the straight line, and the corresponding center of circle of the second circular arc 120 and blade knot
The center of circle of structure cross section is overlapped, and the radius of two kinds of circular arcs is different.Since edge structure 10 is circular contour, the first circular arc in itself
110 can directly intersect with the circular contour of edge structure 10, be formed in intersection towards the arc in 10 circular contour of edge structure
Shape tip (can also be non-intersecting, opening is set by circular contour into the first circular arc and forms the tip with arc), thus it is whole
Body forms a kind of structure small and that inner cavity is big that is open.Cross-sectional distribution so, which can satisfy, keeps fretwork area on section big as far as possible
It is required that interference of the hip screw to substance in bone can be minimized when fretwork area is larger on section.
Hip screw 20 provided by the utility model, as depicted in figs. 1 and 2, including blade part 21 and interconnecting piece 22, it is therein
Blade part 21 uses edge structure 10 as described above, which is used as in merging human body bone, thus has
Stabilization is not easy the characteristics of rotating after being implanted into bone, it is ensured that the healing of bone is less by External force interference.Preferably as one
Scheme, the quantity of the cutter groove 100 being distributed on edge structure 10 is three, specifically can be the cutter groove of three same shapes
100 are uniformly distributed along the center of edge structure 10.It is designed in this way and each cutter groove 100 is enabled to accomplish that inner cavity area is big as far as possible,
But also 10 materials of edge structure are few as far as possible.
As a preferred scheme, cutter groove 100 is linear type cutter groove 100, and cutter groove 100 is at the bottom of the cutter groove 100
At end with the outer surface smoother transition of 10 ontology of edge structure.Since with special cross-sectional shape, there is linear type cutter groove
100 edge structure 10 is easier to be embedded in object from rectilinear direction.Therefore, as shown in Fig. 2, using having linear type cutter groove
The hip screw 20 of 100 edge structures 10, which has in implantation bone, to be easier, and feature more stable after being implanted into.
As another preferred scheme, cutter groove 100 be the screw type cutter groove 100 with predetermined lead angle (in figure not
It shows).If the stability being embedded into object is just higher using helix-type flute 100, no matter from axial or from radially all
It is not easy to loosen.In addition, helical structure facilitates axial propulsion, therefore, the cutter with screw type cutter groove be can avoid using additional
Tool, can advantageously be embedded into object by the rotation of itself.
In 20 scheme of hip screw provided by the utility model, it is preferred that as shown in figures 1 and 3, in hip screw 20
The heart is equipped with through-hole 24, i.e. hip screw 20 is equipped with along the perforative through-hole 24 of its center line, so that can pass through among hip screw 20
Guide pin, which, which plays, generates guiding role in 20 implantation process of hip screw, facilitates surgical procedure.
As a preferred scheme, as shown in figures 1 and 3, it is equipped on the blade 200 of hip screw 20 several perforative
Circular hole 23, these 23 one side of circular hole can reduce the weight of hip screw 20, make its under the premise of keeping stabilized structure more
It is light, it on the other hand can be exchanged by substance in bone that blade 200 separates by circular hole 23, substance in bone is disturbed in reduction
It is dynamic.
The scheme further preferred as one, as shown in Figure 1 and Figure 4, the cutter groove 100 of the edge structure 10 of hip screw 20
Bottom end also is provided with several perforative circular holes 23, and these circular holes 23 lead to the through-hole 24 among hip screw 20.These circular holes 23 are
Bone cement hole, is used primarily in the case of senile osteoporosis, is injected bone cement into femur by these circular holes 23, enhancing
The stability of hip screw 20.
Correspondingly, the utility model additionally provides a kind of femur therapeutic device, which includes intramedullary nail
And hip screw, such fit structure those skilled in the art understand that, and femur therapeutic device institute provided by the utility model
Including hip screw be previously described hip screw 20.And in a wherein scheme, set on the interconnecting piece 22 of hip screw 20
It is equipped with locating slot 25, which is arranged in the surface of hip screw 20, the length direction of locating slot 25 and the length of hip screw 20
It is consistent to spend direction.Under normal conditions, hip screw 20 is cooperatively connected with intramedullary nail by the cross-drilled hole on intramedullary nail and is controlled with forming femur
The primary structure of device is treated, therefore the body to match with locating slot 25 will be set on intramedullary nail, which is resisted against fixed
To realize the effect fixed with respect to intramedullary nail position of hip screw 20 in the slot 25 of position, because the specific structure of intramedullary nail is not that this is practical
Novel emphasis, so not elaborating.
One is certainly existed by locating slot 25 since it is the groove body opened up on curved surface for locating slot 25
The plane that length direction and width direction determine, the plane is parallel with locating slot 25, as a preferred scheme, the plane with
The end face 26 on 22 top of interconnecting piece is in pre-determined tilt angle θ, namely when hip screw 20 is in rigging position, 26 energy of top end face
It is enough with intramedullary nail axis close to parallel or parallel, such setting is so that femoral fracture therapeutic device more matches the day of human body
Right skeletal structure, but also the structure of femoral fracture therapeutic device is more simplified.In addition, the bottom surface of locating slot 25 can be set to
Various shapes, such as can be set to rectangle, triangle or arc-shaped, be preferably arranged to it is arc-shaped, because of arc-shaped bottom surface
So that the abutting contact area of the body being arranged on intramedullary nail and locating slot 25 is bigger, enable the connection structure of the two more steady
It is fixed.It is further preferred that fillet appropriate is arranged on each edge of locating slot 25, setting fillet make locating slot 25 be easier with
Mating structure such as body docks.
Although having been illustrated with some exemplary embodiments of the utility model above, those skilled in the art will
Understand, in the case where not departing from the principles of the present invention or spirit, these exemplary embodiments can be made a change, this
The range of utility model is defined by the claims and their equivalents.
Claims (13)
1. a kind of edge structure, which is characterized in that its ontology has the radiosymmetric cross section in center, every on the edge structure
The radiosymmetric part in one center opens up at least one cutter groove and the blade for being formed in cutter groove two sidewalls top, the knife
The projection on the top of sword falls in the inside of the cutter groove slot bottom.
2. edge structure according to claim 1, which is characterized in that its ontology is the cross section with circular contour, institute
The cross section for stating cutter groove forms the first circular arc being located in space defined by the cutter groove with the center of circle as the blade to slot bottom,
Two first circular arcs in the same cutter groove are located at the second circular arc of the cross section the center point of the ontology with the center of circle
Connection.
3. edge structure according to claim 1, which is characterized in that there are three the cutter groove is set.
4. edge structure according to claim 1, which is characterized in that the cutter groove is linear type cutter groove, and the cutter groove exists
The outer surface smoother transition of the bottom end of the cutter groove and the edge structure ontology.
5. edge structure according to claim 1, which is characterized in that the cutter groove is the spiral with predetermined lead angle
Type cutter groove.
6. a kind of hip screw, which is characterized in that including blade part and interconnecting piece, the blade part includes that Claims 1 to 5 such as is appointed
Edge structure described in one.
7. hip screw according to claim 6, which is characterized in that the hip screw is equipped with perforative logical along its center line
Hole.
8. hip screw according to claim 7, which is characterized in that be equipped with several perforative circles on the blade of edge structure
Hole.
9. hip screw according to claim 8, which is characterized in that also be provided in the cutter groove bottom end of the edge structure several
Perforative circular hole, the circular hole lead to the through-hole.
10. a kind of femur therapeutic device, which is characterized in that the femur therapeutic device contains as described in claim 6~9 is any
Hip screw.
11. femur therapeutic device according to claim 10, which is characterized in that be provided with positioning on the interconnecting piece
The surface of the hip screw is arranged in slot, the locating slot, and the length direction of locating slot is consistent with the hip screw length direction.
12. femur therapeutic device according to claim 11, which is characterized in that parallel plane and institute with the locating slot
The end face on interconnecting piece top is stated in pre-determined tilt angle.
13. femur therapeutic device according to claim 11, which is characterized in that the bottom surface of the locating slot is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720963117.9U CN208435761U (en) | 2017-08-03 | 2017-08-03 | Edge structure, hip screw and femoral fracture therapeutic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720963117.9U CN208435761U (en) | 2017-08-03 | 2017-08-03 | Edge structure, hip screw and femoral fracture therapeutic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208435761U true CN208435761U (en) | 2019-01-29 |
Family
ID=65095799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720963117.9U Active CN208435761U (en) | 2017-08-03 | 2017-08-03 | Edge structure, hip screw and femoral fracture therapeutic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208435761U (en) |
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2017
- 2017-08-03 CN CN201720963117.9U patent/CN208435761U/en active Active
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