CN209153934U - Femur intertrochanteric fracture fixes screw blade - Google Patents
Femur intertrochanteric fracture fixes screw blade Download PDFInfo
- Publication number
- CN209153934U CN209153934U CN201821015471.XU CN201821015471U CN209153934U CN 209153934 U CN209153934 U CN 209153934U CN 201821015471 U CN201821015471 U CN 201821015471U CN 209153934 U CN209153934 U CN 209153934U
- Authority
- CN
- China
- Prior art keywords
- nail
- blade
- screw blade
- urogomphus
- rises
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000000689 upper leg Anatomy 0.000 title claims abstract description 30
- 206010020100 Hip fracture Diseases 0.000 title claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000000314 lubricant Substances 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 abstract description 10
- UZUFPBIDKMEQEQ-UHFFFAOYSA-N perfluorononanoic acid Chemical compound OC(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F UZUFPBIDKMEQEQ-UHFFFAOYSA-N 0.000 abstract description 10
- 208000010392 Bone Fractures Diseases 0.000 abstract description 9
- 206010017076 Fracture Diseases 0.000 abstract description 9
- 230000002980 postoperative effect Effects 0.000 abstract description 6
- 230000001054 cortical effect Effects 0.000 abstract description 3
- 210000001694 thigh bone Anatomy 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000002391 femur head Anatomy 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model relates to the fixed screw blade of femur intertrochanteric fracture, the screw blade structure is divided into the main nail of blade, nail urogomphus rises；The nail urogomphus, which rises, is fixed on the main nail tail portion of blade；It is 130 ° that the nail urogomphus, which rises with the axis angle of the main nail of blade,；The main nail of blade rises with nail urogomphus to be integrally formed, and form a whole screw blade.Its advantage is shown: the fixed screw blade of the femur intertrochanteric fracture of the utility model, solve the problems, such as that clinically interior move of PFNA screw blade penetrates femoral head at present, and screw blade merging can be prevented too deep, it is blocked by the cortical bone on the outside of near end of thighbone shaft tail portion, it can not be slid in and out during the postoperative weight bearing of patient, influence PFNA to the pressurization of fracture end.
Description
Technical field
The utility model relates to the field of medical instrument technology, specifically, being the fixed screw blade of femur intertrochanteric fracture.
Background technique
It treats in the interior fixation of intertrochanteric fracture of the femur, head marrow nail has the advantages such as the arm of force is short, intensity is big, wound is small.Stock
The anti-rotation intramedullary nail of proximal bone (proximal femoral nail antirotation, PFNA) is that fixed association exists in AO
A kind of novel head marrow nail of invention in 2004, it is changed to 1 piece of screw blade by the fixed form of incidence, by lag screw, and
And logical percussion " squeezing into " femoral head, reduce the loss of bone amount.PFNA not only remains the advantages of traditional head marrow nail, also improves
Anti-rotation and anti-varus ability, are particularly suitable for old people with osteoporosis, achieve good clinical efficacy.
With increasing for PFNA clinical application, a kind of weight gradually causing people with the especially relevant complication of screw blade
Depending on: screw blade is inwardly displaced, penetrates femoral head, or even penetrates acetabular bone and enter pelvis.It is moved in PFNA screw blade and penetrates femur
Head is a kind of rare, serious complication of consequence.Simultaneously as patient in the course of surgery easily squeezed into the main nail of screw blade
It is deep, it slide the postoperative weight bearing of patient can not due to screw blade tail portion by the blocking of lateral side of femur wall in the process, influence PFNA to bone
Roll over the axial pressure effect at end.
Chinese patent application: CN201420700854.6 discloses a kind of marrow nail, comprising: mobile jib contains first and second
End；Inter-locking screw is fixedly linked at the first end close to mobile jib with mobile jib；Femoral head neck fixture, close to mobile jib
The second end at be fixedly linked with mobile jib.Femoral head neck fixture includes: main nail, contains the first and second ends, passes through mobile jib
Above being pierced by close to the first inclined hole of its second end is being fixedly connected with main nail simultaneously at its second end with mobile jib
It is in an inclination angle with mobile jib；And umbrella shape stabilising arrangement, setting nail at its first end main, and with the length of main nail
The central axis that direction is opened or collapsed for it.
The invention head marrow nail can to femoral head and neck lease making reset sclerite serve enhance fix and support from
And so that these sclerites mobile back and forth or left and right or rotation is less easily occurred and then keep the reduction of the fracture more firm.Can additionally have
Effect prevents main nail to be pierced by from femoral head neck part or cause to cut to it.But it prevents from moving in screw blade about one kind and penetrates stock
Bone, and screw blade merging can be prevented too deep, shaft tail portion is stopped by the cortical bone on the outside of near end of thighbone, and patient is postoperative
Since screw blade can not slide during weight bearing, the screw blade for influencing axial pressure effect of the PFNA to fracture end be yet there are no
Report.
In conclusion femoral head can be penetrated to avoid moving in screw blade by needing one kind, and screw blade can be prevented
It is placed in too deep screw blade design, but this blade yet there are no disclosure.
Summary of the invention
The purpose of this utility model is to provide a kind of fixed screw blade of femur intertrochanteric fracture.
To achieve the above object, the technical scheme adopted by the utility model is that:
Femur intertrochanteric fracture fixes screw blade, and the screw blade structure is divided into the main nail of blade, nail urogomphus rises；The nail
Urogomphus, which rises, is fixed on the main nail tail portion of blade；It is 130 ° that the nail urogomphus, which rises with the axis angle of the main nail of blade,.
As a preferred solution, the main nail of the blade rises with nail urogomphus is integrally formed, and form a whole spiral
Blade.
As a preferred solution, it is cuboid that the nail urogomphus, which rises, 10 millimeters long, 5 millimeters wide, 5 millimeters high.
As a preferred solution, the nail urogomphus rises consistent with the collodiaphyseal angle of femur with the main nail clip angle of blade, can
It adhere well to lateral side of femur wall.
As a preferred solution, the nail urogomphus rises and the junction of the main nail of blade is in screw blade coronal-plane 7
At point position.
As a preferred solution, the screw blade includes principal screw knife face and secondary spiral knife face.
As a preferred solution, the length of the principal screw knife face is greater than the length of secondary spiral knife face.
As a preferred solution, the outer surface of the screw blade is equipped with lubricant coating.
The utility model advantage is:
1. the utility model femur intertrochanteric fracture fixes screw blade, solves at present in clinically PFNA screw blade and move
The problem of penetrating femoral head, and screw blade merging can be prevented too deep, shaft tail portion is by the cortical bone on the outside of near end of thighbone
It blocks, can not be slid in and out during the postoperative weight bearing of patient, influence PFNA to the pressurization of fracture end
2, the fixed screw blade of the utility model femur intertrochanteric fracture increases the structure that a nail urogomphus rises, can be effective
It avoids screw blade from hammering into position too deep, screw blade can be made to have certain sliding space during patient's weight bearing, it can be to fracture
Place applies certain axial compressive force, promotes bone healing.
3, nail urogomphus, which rises, meets human physiological structure with the main nail clip angle of blade, can avoid moving in screw blade, wears out femur
Capitiform is at complication.
4, the utility model is easy to operate, when operation only when squeezing into screw blade close screw blade tail portion, when
After nail urogomphus is attached to lateral side of femur wall, that is, stop strike screw blade, realizes accurate fix.
5, screw blade includes principal screw knife face and secondary spiral knife face, and the length of the principal screw knife face is greater than secondary circular knife
The length in face, so that the main nail of blade is during squeezing into, distribution of forces is distributed with level ratio, is conducive to establish stable set
Enter channel, in fixation procedure, be beneficial to prevent it is inwardly displaced,
6, the outer surface of rotary knife piece is equipped with lubricant coating, so that screw blade has certain sliding degree, makes screw blade
The axial pressure played the role of to fracture end can be slid in and out.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the fixed screw blade of the utility model femur intertrochanteric fracture.
Attached drawing 2 is that screw blade and intramedullary nail cooperate schematic diagram.
Attached drawing 3 is screw blade use state diagram.
Embodiment
The utility model is further described below with reference to embodiment and referring to attached drawing.
Appended drawing reference involved in attached drawing and component part are as follows:
1. the main nail of 11. blade of screw blade
12. following closely urogomphus plays 2. intramedullary nails
3. femur
Fig. 1 is please referred to, Fig. 1 is the structural schematic diagram of the fixed screw blade of the utility model femur intertrochanteric fracture, the spiral shell
1 structure of rotary knife piece is divided into the main nail 11 of blade, nail urogomphus plays 12；The nail urogomphus plays 12 and is fixed on 11 tail portions of the main nail of blade；It is described
Following closely urogomphus and playing 12 with main 11 axis angle of following closely of blade is 130 °.
Referring to figure 2., Fig. 2 is screw blade and intramedullary nail cooperates schematic diagram, and the main nail 11 of blade plays 12 with nail urogomphus
It is integrally formed, form a whole screw blade 1；The screw blade 1 cooperates fixed fracture site with intramedullary nail 2.
It should be understood that
The nail urogomphus, which plays 12, can prevent the main nail 11 of the blade of screw blade during the postoperative weight bearing of patient from sliding
Femoral head is penetrated in the process, causes Unstable internal fixation.
It is cuboid that the nail urogomphus, which plays 12,10 millimeters long, 5 millimeters wide, 5 millimeters high；Effect is: in strike circular knife
The main nail 11 of the blade of piece is whether that being closely attached to femur side wall judges spiral shell during entering femoral head, according to nail urogomphus 12
Whether the main nail 11 of the blade of rotary knife piece is suitable in the depth squeezed into, and the sliding for reserving the main nail 11 of blade of certain screw blade is empty
Between, prevent the main nail 11 of the blade of screw blade during the postoperative weight bearing of patient from penetrating femoral head.
The nail urogomphus plays 12 and main 130 ° of 11 angle of nail of blade, nail urogomphus consistent with the collodiaphyseal angle of femur and described
Rise 12 and blade it is main nail 11 junction at 7 positions of screw blade coronal-plane, lateral side of femur wall can be adhere well to.It should
Angle and position distribution are to obtain best angle according to clinician's test of many times, and effect is best under the angle.
The screw blade includes principal screw knife face and secondary spiral knife face, and the length of the principal screw knife face is greater than secondary spiral shell
The length in rotary knife face, so that the main nail 11 of blade is during squeezing into, distribution of forces is distributed with level ratio, is conducive to establish
Stablize merging channel to be beneficial to prevent inwardly displaced in fixation procedure.
The outer surface of the screw blade is equipped with lubricant coating, so that screw blade has certain sliding degree, makes spiral shell
Rotary knife piece can slide in and out the axial pressure played the role of to fracture end.
The application method of the fixed screw blade of the utility model femur intertrochanteric fracture are as follows:
Referring to figure 3., intramedullary nail 2 is placed in femur first, is then inserted into screw blade 1, make to follow closely 12 direction of urogomphus
Femoral far is centrifuged dirty one end, keeps angle, is constantly inserted into screw blade 1, plays whether 12 adhere well to stock according to nail urogomphus
Whether thigh lateral wall is suitable to judge blade 11 driving depths of main nail, reserves the sliding space of the main nail 11 of certain blade.
The fixed screw blade of the utility model femur intertrochanteric fracture increases the structure that a nail urogomphus plays 12, can effectively keep away
Exempting from screw blade 1, to hammer into position too deep, and screw blade 1 can be made to have certain sliding space during patient's weight bearing, can be to fracture
Place applies certain axial compressive force, promotes bone healing.Nail urogomphus plays 12 and meets human physiological structure with 11 angles of the main nail of blade, can
It avoids moving in screw blade, wears out femoral head and form complication.The utility model structure is simple, easy to use, is conducive to patient
Postoperation recovery facilitates doctor to operate
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
Art personnel can also make several improvement and supplement without departing from the principle of this utility model, these are improved and supplement
Also it should be regarded as the protection scope of the utility model.
Claims (4)
1. a kind of fixed screw blade of femur intertrochanteric fracture, which is characterized in that the screw blade structure is divided into the main nail of blade, nail
Urogomphus rises；The nail urogomphus, which rises, is fixed on the main nail tail portion of blade；It is 130 ° that the nail urogomphus, which rises with the axis angle of the main nail of blade,；
The main nail of blade rises with nail urogomphus to be integrally formed, and form a whole screw blade；The nail urogomphus rises and blade master
The junction of nail is at 7 positions of screw blade coronal-plane；The screw blade includes principal screw knife face and secondary spiral knife face；
The outer surface of the screw blade is equipped with lubricant coating.
2. the fixed screw blade of femur intertrochanteric fracture according to claim 1, which is characterized in that the nail urogomphus rises as length
Cube shape, it is 10 millimeters long, it is 5 millimeters wide, it is 5 millimeters high.
3. the fixed screw blade of femur intertrochanteric fracture according to claim 1, which is characterized in that the nail urogomphus rises and knife
The main nail clip angle of piece is consistent with the collodiaphyseal angle of femur.
4. the fixed screw blade of femur intertrochanteric fracture according to claim 1, which is characterized in that the principal screw knife face
Length is greater than the length of secondary spiral knife face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821015471.XU CN209153934U (en) | 2018-06-29 | 2018-06-29 | Femur intertrochanteric fracture fixes screw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821015471.XU CN209153934U (en) | 2018-06-29 | 2018-06-29 | Femur intertrochanteric fracture fixes screw blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209153934U true CN209153934U (en) | 2019-07-26 |
Family
ID=67327182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821015471.XU Expired - Fee Related CN209153934U (en) | 2018-06-29 | 2018-06-29 | Femur intertrochanteric fracture fixes screw blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209153934U (en) |
-
2018
- 2018-06-29 CN CN201821015471.XU patent/CN209153934U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190726 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |