CN208435755U - A kind of stress type locking and pressurizing bone-knitting device - Google Patents
A kind of stress type locking and pressurizing bone-knitting device Download PDFInfo
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- CN208435755U CN208435755U CN201721333571.2U CN201721333571U CN208435755U CN 208435755 U CN208435755 U CN 208435755U CN 201721333571 U CN201721333571 U CN 201721333571U CN 208435755 U CN208435755 U CN 208435755U
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Abstract
The utility model discloses a kind of stress type locking and pressurizing bone-knitting devices, the locking and pressurizing bone-knitting device includes: an at least stress type bone plate, the stress type bone plate is equipped with the first lock hole, the second lock hole and locking and pressurizing hole, and the locking and pressurizing hole is formed by second lock hole with pressurization interlaced be connected in hole；In the top surface edge side of the stress type bone plate, arbitrary neighborhood in first lock hole, the second lock hole, locking and pressurizing hole is equipped with by varying stress groove between the two；Stress through slot is equipped between first lock hole of stress type bone plate.The utility model locking bone-knitting device stress type bone plate edge side be equipped with by between varying stress groove and the first lock hole be equipped with stress through slot, to promote the resistance to stress effect of stress type bone plate, and stress type bone plate is broken caused by avoiding stress type bone plate stress from excessively concentrating.
Description
Technical field
The utility model relates to Fracture internal fixaiion instrument technical fields, and in particular to a kind of stress type locking and pressurizing synthetism dress
It sets.
Background technique
Currently, the problems such as traditional metal bone fracture plate is concentrated there are still stress shielding, stress.In clinical application, it uses
During being corrected, fixing to bone, metal bone fracture plate is easily broken off traditional metal bone fracture plate, so that leading to bone
The case where disunion, bone malformation healing, happens occasionally.
It finds after study, the fracture of nearly all metal bone fracture plate occurs in fracture site or near fracture site
At corresponding screw hole.The screw hole of fracture appears in the nail hole position of the merging screw of nearly fracture end, or occurs fracturing
Corresponding position is not placed in the nail hole position of screw.And metal bone fracture plate fracture never occurs for the essential site between screw hole.It is aobvious
So, the corresponding nail hole position for being placed in screw of the fracture site of metal bone fracture plate or the nail hole position for not being placed in screw, are answered
Power collection neutralizes the most weak position of resistance to stress.
It can be seen that metal connects the stress mistake of stress type bone plate when traditional metal bone fracture plate is there is bone is fixed
In concentration, in use, being prone to the defect of bone plate fracture, it would be highly desirable to be further improved.
Utility model content
The purpose of this utility model is to provide a kind of stress type locking and pressurizing bone-knitting devices, to solve in the prior art
The bone plate of bone-knitting device is easily broken off, and corrects the defect of fixed epiphysis effect difference.
To achieve the above object, the utility model provides a kind of stress type locking and pressurizing bone-knitting device, the locking and pressurizing
Bone-knitting device includes:
An at least stress type bone plate, the stress type bone plate are equipped with the first lock hole, the second lock hole and pressurization lock
Determine hole, the locking and pressurizing hole is formed by second lock hole with pressurization interlaced be connected in hole；In the stress type bone plate
Top surface edge side, arbitrary neighborhood in first lock hole, the second lock hole, locking and pressurizing hole sets between the two
Have by varying stress groove；
At least one first lock screw, one second lock screw and a forcing screw, first lock screw with it is described
The cooperation of first lock hole, second lock screw and the forcing screw and the locking and pressurizing hole cooperate, by the stress
Type bone plate is fixed on articular cortex.
Preferably, middle section, the quantity of first lock hole is arranged on the stress type bone plate in first lock hole
At least two, it is connected to by stress through slot between adjacent 2 first lock holes.
Preferably, first lock hole is adjacent with second lock hole, first lock hole and second lock
Determine to be equipped with stress through slot between hole.
Preferably, first lock screw, the second lock screw and forcing screw all have head end and the end that is spirally connected, described
Head end is equipped with quincunx socket.
Preferably, the head end of first lock screw is taper double thread, and merging single thread is in the end that is spirally connected；
The screw pitch of the head end taper double thread is identical as the end merging screw pitch of screw thread that is spirally connected；
The first lock screw head end taper double thread is matched with the first lock hole internal taper double thread.
Preferably, the head end of second lock screw is taper double thread, and the end that is spirally connected is merging single thread,
The screw pitch of the taper double thread of the head end is identical as the end merging screw pitch of screw thread that is spirally connected；
The taper two-wire external screw thread of the second lock screw head end and the second lock hole internal taper double thread phase
Cooperation.
Preferably, the diameter of first lock hole is less than the diameter of second lock hole.
Preferably, the length of second lock screw is greater than the length of first lock screw, and second lock
The diameter for determining screw is greater than the diameter of first lock screw.
Preferably, the distance between first lock hole and second lock hole are 0.5-3mm.
Preferably, the stress type bone plate can be divided into straight type stress type bone plate, arc according to the extending direction of plate body
Stress type bone plate and anatomical form stress type bone plate.
The utility model has the advantages that
The top surface edge side of the stress type bone plate of the locking bone-knitting device of the utility model is offered by varying stress groove,
To reduce the thickness of stress type bone plate edge, stress type bone plate is disconnected caused by avoiding stress type bone plate stress from excessively concentrating
It splits, extends the service life of stress type bone plate；Stress through slot is opened up between two the first lock holes on stress type bone plate, with
The rigidity between the first lock hole is reduced, the effect of stress type bone plate metallic elastic is played, alleviates stress type bone plate local stress, point
Stress is dissipated, avoids stress from concentrating and stress shielding, while can permit fracture end there are certain fine motion, the through slots of stress type bone plate
Design can provide support for the blood supply access of cortical bone or periosteum and soft tissue.
The distance between first lock hole and the second lock hole of the utility model are 0.5-3mm, after fixed, the first locking
Between screw and the second lock screw can stress simultaneously, to improve resistance to stress intensity, while the first lock screw selects half cortex
Bone fixation can avoid the generation of stress screw breakage；First locking bore dia makes the first screw less than the second locking bore dia
The cross-sectional area at hole position is greater than the cross-sectional area at the second lock hole position, to improve the resistance to stress intensity of the force part.The
The ends screw of one lock screw and the second lock screw is double thread, and screw pitch holds screw pitch identical with being spirally connected.
Detailed description of the invention
Fig. 1 is the installation diagram of the stress type bone plate of the utility model.
Fig. 2 is stress type bone plate perspective view on the outside of the distal fibular of the utility model
Fig. 3 is short bone plate structure schematic diagram on the outside of the distal femur of the utility model.
Fig. 4 is long bone plate structure schematic diagram on the outside of the near end of thighbone of the utility model.
Fig. 5 is 4 hole stress type bone plate perspective views on the outside of the proximal tibia of the utility model.
Fig. 6 is stress type bone plate perspective view on the inside of the proximal tibia of the utility model.
Fig. 7 is stress type bone plate perspective view on the outside of the proximal humerus of the utility model.
Fig. 8 is the structural schematic diagram of first lock screw of the utility model.
Fig. 9 is the structural schematic diagram of second lock screw of the utility model.
Figure 10 is the structural schematic diagram of the forcing screw of the utility model.
Specific embodiment
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
As shown in Figures 1 to 4, the stress type locking and pressurizing bone-knitting device of the utility model comprising: an at least stress type
Bone plate 700, stress type bone plate 700 are equipped with the first lock hole 100, the second lock hole 200 and locking and pressurizing hole 300, pressurization
Lock hole 300 is formed by the second lock hole 200 with pressurization interlaced be connected in hole 500, and locking and pressurizing hole 300 is symmetrically in stress type
Specific reasonable layout as needed on bone plate 700；In the top surface edge side of stress type bone plate 700, the first adjacent lock hole
100, it is equipped between adjacent compression lock hole 300, between the second lock hole 200 and locking and pressurizing hole 300 by varying stress groove
400, preferably, the shape of groove 400 is arc, the setting of groove 400 is so that the thickness of the edge of stress type bone plate 700 subtracts
Small, gradually the stress to both ends dispersive stress type bone plate 700 at this, reduces stress type bone plate 700 in the first lock hole
100, the rigidity between locking and pressurizing hole 300 avoids stress type bone plate 700 and concentrates what is be broken to lack in nail hole position stress
It falls into.At least one first lock screw 8, the second lock screw 7 and forcing screw 6, the first lock screw 8 and the first lock hole 100
Cooperation, the second lock screw 7 and forcing screw 6 can respectively with second lock hole 200 in locking and pressurizing hole 300 and hole 500 of pressurizeing
Cooperation, stress type bone plate 700 is fixed on articular cortex.Since locking and pressurizing hole 300 is by the second lock hole 200, pressurization hole
500 edge, which is connected to, to be formed, and second lock hole 200 in locking and pressurizing hole 300 can individually wear for the second lock screw 7,
Pressurization hole 500 wears for forcing screw 6, and the second lock screw 7 or being spirally connected for forcing screw 6 after wearing hold corresponding access
Epiphysis, wherein fracture end can be made to pressurize when selection forcing screw, while stress type bone plate is pressed into bone face, select the second locking
When screw, screw and stress type bone plate is made to constitute locking connection.When concrete application, the position according to fixed bone is needed, is fractured
Degree accordingly select the first lock screw 7 or forcing screw 6 that it is fixed.
As shown in Figures 4 to 7, the first lock hole 100 of the stress type bone plate 700 of the utility model, the first lock hole 100
2 be one group；And two the first lock holes 100 close to each other are connected to by stress through slot 600, stress through slot 600 can be with
For holostrome stress through slot or the part stress through slot of non-holostrome, holostrome stress through slot refers to slot through the upper of stress type bone plate
Surface and lower surface, the part stress through slot of non-holostrome refer to that slot only connects with the upper surface of stress type bone plate or lower surface
It is logical.The setting of stress through slot 600, so that at stress type bone plate 700 where stress through slot 600 and 100 institute of the first lock hole
700 position of stress type bone plate at, there is the cross-sectional area that is substantially the same, to increase stress work segment, alleviate stress
Type bone plate 700 meets with stresses the stress at maximum position in the screw hole of nearly fracture site, and avoids stress type bone plate 700, stress
It concentrates and stress type bone plate 700 is caused to be broken.
As disposable embodiment, the quantity of the first lock hole 100 can be 3 or 4 side by side, adjacent
Stress through slot 600 is equipped between first lock hole.It is equipped with and answers between adjacent the first lock hole 100 and the second lock hole 200
Power through slot 600.
As shown in Figure 7 to 10, the first lock screw 8 of stress type locking and pressurizing bone-knitting device, the first lock screw 8 with
The cooperation of first lock hole 100.First lock screw 8, the second lock screw 7 and forcing screw 6 all have 61,71,81 and of head end
Be spirally connected end 62,72,82, and head end is equipped with quincunx socket 63,73,83.The head end of first locking spiral shell 8 is taper double thread, spiral shell
End 62,72,82 is connect as merging screw thread, the screw pitch that the end 62,72,82 that is spirally connected is placed in screw thread is identical as the screw pitch of head end taper thread；
First lock screw, 8 head end taper double thread is matched with 100 internal taper double thread of the first lock hole.Second lock screw
7 head end be equipped with taper two-wire external screw thread, and with second lock hole in locking and pressurizing hole, 200 taper two-wire screw-internal thread fit, add
The head end of pressure screw 6 is not provided with screw thread, is cooperated by the pressurization hole 500 in head end 61 and locking and pressurizing hole, pressurization is fixed to it.
The head end of first lock screw 8 and the end that is spirally connected are equipped with external screw thread, both screw pitch is identical, to guarantee to be spirally connected to hold screw thread and head end
The synchronism of screw thread, the diameter of the first lock hole 100 are less than the diameter of the second lock hole of locking and pressurizing hole 200.Second locking spiral shell
The length of nail 7 is greater than the length of the first lock screw 8, and the diameter of the second lock screw 7 is greater than the straight of the first lock screw 8
Diameter.At adjacent 100 through slot of the first lock hole being arranged on stress type bone plate 700, just to the fracture in requisition for correction, from
And the stress of dispersive stress type bone plate, avoid the fracture of stress type bone plate.
Preferably, the spacing between the second lock hole 200 and the first lock hole 100 of adjacent compression lock hole 300 is
0.5-3mm or so.And first lock screw 8 select mono cortex to set nail, this short distance sets nail, and double nails cooperate, and makes stress type bone
The screw at 700 proximal end stress maximum position of plate becomes double nail stress from former single nail stress, largely avoids screw breakage
Probability, while the diameter of the first lock hole 100 is less than the diameter of the second lock hole 200, make stress type bone plate 700 stress most
Big nail hole position, the former sectional area of increase can avoid stress to improve the resistance to stress intensity at the position to the greatest extent
Caused by stress type bone plate be broken.
Wherein, the surface of stress type bone plate 700 is plane or curved surface, and the surface of stress type bone plate 700 adapts to bone surface
Physiological camber, the edge side of 700 bottom surface of stress type bone plate, between adjacent first lock hole 100, adjacent compression lock hole
Offered between the first lock hole 100 between 300, between adjacent second lock hole 200 and locking and pressurizing hole 300, adjacent by
Varying stress groove 400 is open preferably, the shape of groove 400 is arc towards the outside of stress type bone plate 700, stress type bone
The setting of 700 bottom recesses of plate can increase by 700 bottom surface of stress type bone plate to the compactness of bone surface, while also reduce stress
For 700 bottom surface of type bone plate to the compressing area of bone surface, the blood supply access for periosteum and soft tissue provides support.
It is logical that stress is opened up on the stress type bone plate of the locking bone-knitting device of the utility model between two the first lock holes
Slot plays the effect of stress type bone plate metallic elastic to reduce the rigidity between the first lock hole, alleviates stress type bone plate and locally answers
Power, dispersive stress avoid stress concentration and stress shielding；Allow fracture end there are certain fine motion simultaneously, stress through slot is set
Meter can increase stress active length, avoid stress collection medium.The cross section metal depth of stress type bone plate through slot section and the first locking
The cross section metal depth at hole position is suitable, but is slightly larger than the section depth at the first lock hole position, with proof stress type bone plate work
Make the consistency of segment application.The through slot design of stress type bone plate can provide for the blood supply access of cortical bone or periosteum and soft tissue
It supports.
Wherein, the stress type bone plate can be divided into straight type stress type bone plate, arc is answered according to the extending direction of plate body
Power type bone plate and anatomical form stress type bone plate.The anatomical form stress type bone plate include lock stress type bone plate, proximal humerus plate,
Near end of thighbone bone plate, distal femur bone plate, side seam plate, distal tibial bone plate, distal fibular bone plate inside and outside proximal tibia.Bone plate
Shape carries out integrity design according to the type and structure of correcting femur.
The structure of locking bone-knitting device and the relationship of stress of the utility model are according to existing bone plate structure and biology
Mechanical characteristic promotes bone plate performance by structure optimization, and wherein stress maximum position uses big aperture short distance arrangement design, with
Alleviate former macropore stress, while expanding the cross-sectional area in the hole using aperture design, to promote the hole stress intensity at nail hole position；
Stress bone plate edge gradual change groove facilitates stress and conducts to synthetism board ends, furthermore is followed closely using mothers and sons and cooperate with single double cortex solid
It is fixed, to promote the resistance to stress intensity of stress maximum position screw.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (10)
1. a kind of stress type locking and pressurizing bone-knitting device, which is characterized in that the locking and pressurizing bone-knitting device includes:
An at least stress type bone plate, the stress type bone plate are equipped with the first lock hole, the second lock hole and locking and pressurizing hole,
The locking and pressurizing hole is formed by second lock hole with pressurization interlaced be connected in hole；In the upper table of the stress type bone plate
Face edge side, arbitrary neighborhood in first lock hole, the second lock hole, locking and pressurizing hole are equipped with by change between the two
Stress groove；
At least one first lock screw, one second lock screw and a forcing screw, first lock screw and described first
Lock hole cooperation, second lock screw and the forcing screw and the locking and pressurizing hole cooperate, by the stress type bone
Plate is fixed on articular cortex.
2. stress type locking and pressurizing bone-knitting device according to claim 1, which is characterized in that
First lock hole setting middle section on the stress type bone plate, the quantity at least two of first lock hole,
It is connected between adjacent 2 first lock holes by stress through slot.
3. stress type locking and pressurizing bone-knitting device according to claim 1, which is characterized in that
First lock hole is adjacent with second lock hole, is equipped between first lock hole and second lock hole
Stress through slot.
4. stress type locking and pressurizing bone-knitting device according to claim 1, which is characterized in that
First lock screw, the second lock screw and forcing screw all have head end and the end that is spirally connected, and the head end is equipped with plum
Flower-shape socket.
5. stress type locking and pressurizing bone-knitting device according to claim 4, which is characterized in that
The head end of first lock screw is taper double thread, and merging single thread is in the end that is spirally connected；
The screw pitch of the head end taper double thread is identical as the end merging screw pitch of screw thread that is spirally connected；
The first lock screw head end taper double thread is matched with the first lock hole internal taper double thread.
6. stress type locking and pressurizing bone-knitting device according to claim 4, which is characterized in that
The head end of second lock screw is taper double thread, and the end that is spirally connected is merging single thread, the head end
The screw pitch of taper double thread is identical as the end merging screw pitch of screw thread that is spirally connected；
The taper two-wire external screw thread of the second lock screw head end is matched with the second lock hole internal taper double thread.
7. stress type locking and pressurizing bone-knitting device according to claim 1, which is characterized in that
The diameter of first lock hole is less than the diameter of second lock hole.
8. stress type locking and pressurizing bone-knitting device according to claim 1, which is characterized in that
The length of second lock screw is greater than the length of first lock screw, and the diameter of second lock screw
Greater than the diameter of first lock screw.
9. stress type locking and pressurizing bone-knitting device according to claim 1, which is characterized in that
The distance between first lock hole and second lock hole are 0.5-3mm.
10. stress type locking and pressurizing bone-knitting device according to claim 1, which is characterized in that
The stress type bone plate can be divided into straight type stress type bone plate, arc stress type bone plate according to the extending direction of plate body
And anatomical form stress type bone plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721333571.2U CN208435755U (en) | 2017-10-17 | 2017-10-17 | A kind of stress type locking and pressurizing bone-knitting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721333571.2U CN208435755U (en) | 2017-10-17 | 2017-10-17 | A kind of stress type locking and pressurizing bone-knitting device |
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| CN208435755U true CN208435755U (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107669322A (en) * | 2017-10-17 | 2018-02-09 | 熊鹰 | A kind of stress type locking and pressurizing bone-knitting device |
-
2017
- 2017-10-17 CN CN201721333571.2U patent/CN208435755U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107669322A (en) * | 2017-10-17 | 2018-02-09 | 熊鹰 | A kind of stress type locking and pressurizing bone-knitting device |
| CN107669322B (en) * | 2017-10-17 | 2023-08-11 | 熊鹰 | Stress type pressurizing and locking bone setting device |
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