CN208974080U - The inside and outside double fixing screws of fracture - Google Patents
The inside and outside double fixing screws of fracture Download PDFInfo
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- CN208974080U CN208974080U CN201821056365.6U CN201821056365U CN208974080U CN 208974080 U CN208974080 U CN 208974080U CN 201821056365 U CN201821056365 U CN 201821056365U CN 208974080 U CN208974080 U CN 208974080U
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Abstract
The utility model belongs to the field of medical instrument technology, it is related to double fixing screws inside and outside a kind of fracture for four limbs load-bearing bone, wherein the inside and outside double fixing screws of fracture include that the interior fixed link of screw thread, outer fixed link is respectively set in surface, outer fixed link axial direction one end is connected with interior fixed link, the first cross spiral shell edge of a knife is arranged in the outer fixed link axial direction other end, the junction of the interior fixed link and outer fixed link is equipped with position limiting structure, and the vertical section length of position limiting structure is greater than the diameter of interior fixed link.The utility model product has the advantages that reduction of the fracture fixing-stable is reliable；Reduce operation wound, protection periosteum and local blood supply；Reduce stress shielding；Secondary nail-plate existing for traditional internal fixation operation is avoided to take out operation；Convenient outer fixed operation reduces outer fixed occupy-place, is conducive to the work and life during patient's treatment.
Description
Technical field
The utility model belongs to the field of medical instrument technology, is related to double fixed inside and outside a kind of fracture for four limbs load-bearing bone
Screw.
Background technique
Modern clinic is mainly Fracture internal fixaiion and external fixation of fracture for the processing method of fracture, Fracture internal fixaiion and bone
Folding is outer fixed respectively an advantage and disadvantage, no matter all difficult people's will to the greatest extent of which kind of method.Interior fixation is simply direct, resets, and body surface is without appendicle
Tool influence activity, but wound is big, and serious to the damage of periosteum and surrounding tissue, stress shielding is significant, and the fixation nail-plate of implantation is also
It needs second operation to take out, and is likely to occur the risk of secondary fracture.With fixing, reliable, damage is small, does not limit for outer fixation
The advantages that joint motion, stress shielding are few, easy to dismantle, but fixed operation is complicated, Out-body form is huge, hinders life and work
Make.Clinically mostly use interior fixation at present, and pursue on this basis can fine motion nail-plate it is fixed to reduce stress shielding, pursuit can
Nail-plate is absorbed to solve the problems, such as second operation.However, can fine motion nail-plate be fixed still remains the problem of needing secondary taking-up；It can inhale
Nail-plate is received then because the intensity of current absorbable material is inadequate, can only be used in the cancellous bone fracture of non-bearing fix, for facing
Most common load-bearing bone (cortex bone) fracture of bed, then it is helpless.Meet in this way, the orthopaedic trauma that height relies on medical instrument develops
Bottleneck is met, academic demand is not being met for a long time with patient demand, and there is an urgent need to either solve in terms of absorbable material
It makes a breakthrough in terms of scheme, research and development have both inside and outside fixed advantage, can overcome or reduce the instrument or scheme of its disadvantage.
Summary of the invention
The purpose of the utility model is to provide fixing screws double inside and outside a kind of fracture, double fixing screws can be realized for
The inside and outside fixation of four limbs load-bearing bone, it is ensured that the reduction of the fracture is reliable and stable.
According to the technical solution of the utility model includes: double fixing screws inside and outside a kind of fracture, it is characterised in that: including surface point
Not She Zhi screw thread interior fixed link, outer fixed link, outer fixed link axial direction one end is connected with interior fixed link, and outer fixed link is axially another
The first cross spiral shell edge of a knife is arranged in one end, and the junction of the interior fixed link and outer fixed link is equipped with position limiting structure, position limiting structure
Vertical section length is greater than the diameter of interior fixed link.
The interior fixed link is connected through a screw thread with outer fixed link as a further improvement of the utility model,.
Outer fixed link bolt section is arranged in the interior fixed link top as a further improvement of the utility model, outer solid
Pressing plate is set below fixed pole bolt section, and pressing plate constitutes position limiting structure, and the second cross spiral shell edge of a knife is arranged in the top of interior fixed link；Outside
Nut segment is arranged in fixed link lower part, and nut segment is matched with outer fixed link with bolt section, and dowel hole is arranged in the top of nut segment,
After outer fixed link is connect in place with interior fixed link, dowel hole is matched with the second cross spiral shell edge of a knife, and positioning pin runs through positioning pin
Hole, the setting of the second cross spiral shell edge of a knife.
The thread segment of the nut segment and outer fixed link is rotatablely connected as a further improvement of the utility model,.
The interior fixed link and outer fixed link integrally connected as a further improvement of the utility model,.
The screw thread on the interior fixed link surface is full thread or half-thread as a further improvement of the utility model,.
The utility model have the technical effect that the utility model product for it is clinical at present to fracture using interior fixation or
Outer fixing process mode, there are the shortcomings that carry out specific aim improvement, double fixed systems have the advantages that inside and outside the fracture of exploitation
Reduction of the fracture fixing-stable is reliable；Reduce operation wound, protection periosteum and local blood supply；Reduce stress shielding；It avoids in tradition
The fixed existing secondary nail-plate of operation takes out operation；Convenient outer fixed operation reduces outer fixed occupy-place, is conducive to patient's treatment phase
Between work and life.
Detailed description of the invention
Fig. 1 is the first embodiment structure schematic diagram of the inside and outside double fixing screws of the utility model fracture.
Fig. 2 is the first embodiment structure schematic diagram of the inside and outside double fixing screws of the utility model fracture.
Fig. 3 is second of embodiment structure schematic diagram of the inside and outside double fixing screws of the utility model fracture.
Fig. 4 is the structural schematic diagram of interior fixed link in Fig. 3.
Fig. 5 is the first structural schematic diagram of the China and foreign countries Fig. 3 fixed link.
Fig. 6 is second of structural schematic diagram of the China and foreign countries Fig. 3 fixed link.
Fig. 7 is a kind of type of attachment of the inside and outside double fixing screws of fracture in Fig. 3.
Fig. 8 is the utility model use state diagram.
Specific embodiment
Specific embodiment of the present utility model is further described with reference to the accompanying drawing.
In Fig. 1 ~ 8, including interior fixed link 101, pressing plate 102, outer fixed link bolt section 103, the second cross spiral shell edge of a knife
104, nut segment 205, dowel hole 206, outer fixed link 207, the first cross spiral shell edge of a knife 208, rotating member 309, fractured bones 410,
Absorbable bone plate 411, skin surface 412, outer stationary positioned nut 413, outer fixation steel plate 414, outer fixture nut 415, can
Absorb screw 416 etc..
As shown in Fig. 1 ~ 7, double fixing screws are by meeting biocompatibility and mechanical property inside and outside the fracture in the utility model
The metal material of energy is made, including interior fixed link 101, outer fixed link 207, the surface of interior fixed link 101 and outer fixed link 207 are equal
It is provided with screw thread, the interconnecting piece of interior fixed link 101 and outer fixed link 207 forms position limiting structure, and the longitudinal cross-section of position limiting structure is long
Degree is greater than the diameter of interior fixed link 101, in order to which when in use, which is positioned at absorbable 411 surface of bone plate, such as
Fig. 1, shown in 2, the first embodiment for inside and outside double fixing screws of fracturing, interior fixed link 101 integrally connects with outer fixed link 207
It connects.
As shown in Fig. 3 ~ 7, the fitting of absorbable bone plate 411 is fixed when in use for convenience, it is preferable that this is practical
It is novel to additionally provide second of embodiment of the inside and outside double fixing screws of fracture, in this kind of embodiment, interior fixed link 101 with it is outer
Fixed link 207 is threadedly coupled, and specifically interior 101 top of fixed link sets gradually pressing plate 102, outer fixed link bolt from lower to upper
The second cross spiral shell edge of a knife 104 is arranged in section 103, the top surface of outer fixed link bolt section 103, and pressing plate 102 constitutes position limiting structure；It is outer solid
207 lower part of fixed pole is arranged nut segment 205, and outer 207 upper end of fixed link is arranged the first cross spiral shell edge of a knife 208, nut segment 205 with it is outer solid
Fixed pole bolt section 103 is connected, and realizes the connection of interior fixed link 101 and outer fixed link 207, after connection in place, nut segment 205
Bottom surface be resisted against 102 upper surface of pressing plate, at this point, dowel hole 206 is matched with the second cross spiral shell edge of a knife 104, in order to avoid
When in use, when rotating outer fixed link 207, interior 101 transfer of fixed link, in dowel hole 206 and the second cross spiral shell edge of a knife 104
Positioning pin is set, that is, constitutes second of embodiment of the inside and outside double fixing screws of fracture.
The screw thread on interior 101 surface of fixed link is full thread or half-thread.
As shown in fig. 6, in some cases, after interior fixation, the direction of outer fixed link 207 needs to be adjusted, because furthermore
The structure of fixed link 207 can change again as two-stage structure, i.e., the threaded portion of nut segment 205 and outer fixed link 207 is rotation
Connection is connected by universal or one-way joint, can according to need the direction position for adjusting outer fixed link when in use.
The second cross spiral shell edge of a knife 104 is the cross spiral shell edge of a knife of outer 103 tail of fixed link bolt section, for using Philip's head screw
Interior fixed link 101 is tightened or unscrewed to knife.Outer fixed link bolt section 103 aligns the direction tightened and interior fixation with nut segment 205
The direction that bar 101 is tightened is consistent, and after tightening, a positioning pin can be inserted into the second cross spiral shell knife by dowel hole 206
Mouth 104(dowel hole 206 can be a circular hole, be also possible to a hole of any shape, but it must be with positioning pin phase
Match, and positioning pin also needs to match with the notch of the second cross spiral shell edge of a knife 104), interior fixation when guaranteeing external adjusting or remove
It will not loosen between bar 101, outer fixed link 207.Outer fixed link 207 is changeable, and external screw thread matches with nut segment 205,
It can connect lengthening, the state of similar Fig. 7 be presented, such design is made outer solid in order to which the length of outer fixed link is adjustable
Surely it is bonded body surface curve, it is no longer huge mixed and disorderly.
The inside and outside double fixing screws of the fracture of the utility model product have internal fixation screw and justify the dual of spicule with outer fixation
Function, and (Fig. 4 -> Fig. 5 -> Fig. 3) can not only be applied in combination step by step but also can combine rear (Fig. 3) directly for the two funtion parts
Use is connect, is required with adapting to the different of operation.Double fixing screws are mainly used for not needing bone plate inside and outside the fracture combined
Interior fixation, interior fixation are completed by interior fixed link 101 and pressing plate 102, and outer fixed, the spy for having wound small is then carried out in body surface
Point.Meet double fixing screws inside and outside the fracture needed in this way, except second of implementation of fixing screws double inside and outside the fracture shown in Fig. 3
Outside the pattern of mode, can also have Fig. 1, inside and outside the fracture shown in 2 patterns such as the first embodiment of double fixing screws change
Change.
For needing the interior fixation of bone plate, fracture should be cooperated using absorbable bone plate 411 and bioabsorbable interference screw 416
Inside and outside double fixing screws just have the clinical meaning for avoiding second operation, this is that the disclosed fracture of the utility model product is inside and outside double
Fixed system.Due to there is the support of outer fixation, absorbable bone plate 411 can be used to that load-bearing bone fracture is auxiliarily fixed, and play
Reduction of the fracture stationary positioned and mechanics booster action are constituted together with the inside and outside double fixing screws of fracture and outer fixation steel plate 414
To the structure that fracture stabilization is fixed.
Shown in Fig. 8, for an example of the use state for inside and outside double fixed systems of fracturing, when operation, first by the reduction of the fracture,
Then interior fixed, bioabsorbable interference screw is carried out with absorbable bone plate 411, bioabsorbable interference screw 416, the inside and outside double fixing screws of fracture
416 should be spaced use with the inside and outside double fixing screws of fracture, so that uniform force.Connect in interior fixed link 101 after the completion of interior fixation
It connecing outer fixed link 207 and is pierced by skin surface 412, interior fixed link 101 realizes the interior fixed function of the inside and outside double fixing screws of fracture,
Outer fixation steel plate 414 is fixed on to the appropriate location in outer fixed link 207 in body surface, reaches and gives interior fixed mechanics and intensity branch
The effect held, the fixed form of outer fixation steel plate 414 be first outer stationary positioned nut 413 is connected in outer fixed link 207, then
Outer fixation steel plate 414 is connected in outer fixed link 207, and is locked by outer fixture nut 415.It can absorb and connects in Fig. 8
The quantity and distribution of the inside and outside double fixing screws of shape and bioabsorbable interference screw 416, the fracture of bone plate 411, are all for example, in reality
It can be all changed according to the actual situation in the application of border.During fracture is restored, according to the process of union, pass through tune
The adjustable stress shielding state to fracture site of elasticity of outer fixture nut 415 is saved, to promote union and enhancing
The bone strength at healing position.After the completion for the treatment of, the inside and outside double fixing screws of outer fixed and fracture are directly removed, are not needed secondary
Operation, the absorbable bone plate 411 and bioabsorbable interference screw 416 of interior fixation will be absorbed by organisms after degradation.
The non-threaded position of the inside and outside double fixing screws of fracture, be it is mellow and full smooth, in favor of taking out and reducing to surrounding group
The damage knitted.The absorbable bone plate and bioabsorbable interference screw being used cooperatively with double fixing screws, catabolite should be with double fixations
The metal of screw will not chemically react.
Claims (6)
1. double fixing screws inside and outside a kind of fracture, it is characterised in that: including surface be respectively set screw thread interior fixed link (101),
Outer fixed link (207), the axial one end of outer fixed link (207) are connected with interior fixed link (101), and outer fixed link (207) is axial another
The first cross spiral shell edge of a knife (208) is arranged in one end, and the interior fixed link (101) and the junction of outer fixed link (207) are equipped with limit
Structure, the vertical section length of position limiting structure are greater than the diameter of interior fixed link (101).
2. the inside and outside double fixing screws of fracture as described in claim 1, it is characterised in that: the interior fixed link (101) with it is outer solid
Fixed pole (207) is connected through a screw thread.
3. the inside and outside double fixing screws of fracture as claimed in claim 2, it is characterised in that: interior fixed link (101) top is set
Outer fixed link bolt section (103) is set, pressing plate (102) are set below outer fixed link bolt section (103), pressing plate (102) is constituted
The second cross spiral shell edge of a knife (104) is arranged in the top of position limiting structure, interior fixed link (101)；Nut is arranged in outer fixed link (207) lower part
Section (205), nut segment (205) are matched with outer fixed link with bolt section (103), and positioning pin is arranged in the top of nut segment (205)
Hole (206), after outer fixed link (207) connect in place with interior fixed link (101), dowel hole (206) and the second cross spiral shell edge of a knife
(104) it matches, positioning pin is arranged through dowel hole (206), the second cross spiral shell edge of a knife (104).
4. the inside and outside double fixing screws of fracture as claimed in claim 3, it is characterised in that: the nut segment (205) and outer fixation
The thread segment of bar (207) is rotatablely connected.
5. the inside and outside double fixing screws of fracture as described in claim 1, it is characterised in that: the interior fixed link (101) with it is outer solid
Fixed pole (207) integrally connected.
6. the inside and outside double fixing screws of fracture as described in claim 1, it is characterised in that: interior fixed link (101) surface
Screw thread is full thread or half-thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821056365.6U CN208974080U (en) | 2018-07-05 | 2018-07-05 | The inside and outside double fixing screws of fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821056365.6U CN208974080U (en) | 2018-07-05 | 2018-07-05 | The inside and outside double fixing screws of fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208974080U true CN208974080U (en) | 2019-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821056365.6U Active CN208974080U (en) | 2018-07-05 | 2018-07-05 | The inside and outside double fixing screws of fracture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577959A (en) * | 2018-07-05 | 2018-09-28 | 徐斌 | The inside and outside double fixing screws of fracture |
-
2018
- 2018-07-05 CN CN201821056365.6U patent/CN208974080U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577959A (en) * | 2018-07-05 | 2018-09-28 | 徐斌 | The inside and outside double fixing screws of fracture |
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