CN207012228U - A kind of inner fixing device for fracture of neck of femur - Google Patents
A kind of inner fixing device for fracture of neck of femur Download PDFInfo
- Publication number
- CN207012228U CN207012228U CN201621368971.2U CN201621368971U CN207012228U CN 207012228 U CN207012228 U CN 207012228U CN 201621368971 U CN201621368971 U CN 201621368971U CN 207012228 U CN207012228 U CN 207012228U
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- Prior art keywords
- screw
- fixing hole
- steel plate
- femur
- femoral head
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Abstract
The utility model discloses a kind of inner fixing device for fracture of neck of femur, and it includes steel plate and six pieces of screws；Six screw holes of corresponding six pieces of screws are respectively equipped with the steel plate；The screw hole is in step-like, is divided into large aperture section and small-bore section, the large aperture section is provided with internal thread, and the small-bore section inwall is inclined-plane or cambered surface；Between the screw afterbody protrusion and diameter between the aperture of the large aperture section and the small-bore section；Each screw afterbody is furnished with a screw thread tail cap, and the screw thread tail cap has the external screw thread matched with the internal thread, and the screw thread tail cap is screwed onto in the large aperture section of the screw hole and the corresponding screw is locked into fixed angle.The screw can adjust deviateing in 0~15 ° of the screw hole axis, adapt to the near end of thighbone structure of Different Individual, and the screw, by being not easy to loosen after screw thread tail cap locking, fixing intensity is big and stability is high, can effectively help pressed reduction of fracture.
Description
Technical field
The utility model belongs to technical field of medical instruments, and in particular to a kind of interior fixed dress for fracture of neck of femur
Put.
Background technology
With the aggravation of China's aging process, the incidence of disease of fracture of neck of femur is growing day by day.Fracture of neck of femur it is interior solid
It is varied to determine mode, but curative effect is mostly uncertain, however it remains dispute.More forcing screws are fixed and sliding screw plus side side
Interal fixation is internal fixation method relatively generally acknowledged at present, but the gerontal patient of fracture of neck of femur occurs often with different journeys
The osteoporosis of degree, fractured near end of thighbone is weak, and the fixed method of simple more nails is difficult to play strong fixation, it is easy to bone occurs
Do not connect, interior fixed loosening, the Unstable internal fixation such as fracture redisplacement；The method of sliding screw plus side side Interal fixation, although can be with
The stress that screw is born is distributed to femoral shaft by steel plate, reduces the risk of Unstable internal fixation to a certain extent, but follow closely
Plate system still suffers from very big deficiency, thick including main nail, is easily destroyed femoral neck bone and blood freight volume；Complex operation, no
It is easily controlled screw orientation etc..To solve the above problems, the present inventor has applied for Chinese patent before
CN201521065427.6, discloses a kind of fracture of neck of femur locking and pressurizing inner fixing device, and the device includes steel plate and six pieces
Screw；Six screw holes of corresponding six pieces of screws are respectively equipped with the steel plate：Two femoral shaft fixing holes are arranged on steel plate
Bottom, corresponding two femoral shaft fixing hole screws；One bigelow's septum fixing hole is arranged in the middle part of steel plate, and a corresponding bigelow's septum is consolidated
Determine hole screw；Three femoral head fixing holes are arranged on steel plate top, corresponding three femoral head fixing hole screws；Six pieces in the device
Screw position is reasonably distributed, and in combination with steel plate so that fixing intensity is big, can be improved the success rate fixed to fracture of neck of femur and (be awarded
Weigh the U of notification number CN 205548660).
But in clinical practice work, it has been found that fix the screw when being implanted into patient femur's near-end along screw
The axis implantation in hole, because the jackknifing situation of near end of thighbone is different, the femoral shaft and neck of femur angle angle of Different Individual also can
Have differences, so often there is screw placement direction and the inconsistent situation of preset direction, and also it is postoperative not to screw progress
Fixed, screw easily loosens, and reduces pressurization, influences the success rate fixed to fracture of neck of femur.Therefore it is clinical there is an urgent need to
A kind of inner fixing device of fracture of neck of femur, its screw can be locked with predetermined angle and can also be finely adjusted in art to improve
The inner fixing device for the success rate fixed to fracture of neck of femur.
Utility model content
Therefore, for technical problem of the prior art, the purpose of this utility model is to provide a kind of screw can be with pre-
If angle locking with improve to fracture of neck of femur fix success rate the inner fixing device for fracture of neck of femur.
Inner fixing device of the present utility model for fracture of neck of femur includes steel plate and six pieces of screws；Divide on the steel plate
Six screw holes of six pieces of screws She You not corresponded to：Two femoral shaft fixing holes are arranged on the bottom of steel plate, corresponding two femurs
Dry fixing hole screw；One bigelow's septum fixing hole is arranged in the middle part of steel plate, a corresponding bigelow's septum fixing hole screw；Two first
Femoral head fixing hole is arranged on steel plate top, corresponding two femoral head fixing hole screws；One the second femoral head fixing hole is set
On steel plate top and above the first femoral head fixing hole, a corresponding second femoral head fixing hole screw；
The screw hole is in step-like, is divided into large aperture section and small-bore section, the large aperture section is provided with internal thread, described
Small-bore section inwall is inclined-plane or cambered surface；In the large aperture section and the small-bore section between the screw afterbody protrusion and diameter
Aperture between；Each screw afterbody is furnished with a screw thread tail cap, and the screw thread tail cap has what is matched with the internal thread
External screw thread, the screw thread tail cap are screwed onto in the large aperture section of the screw hole and the corresponding screw are locked into fixed angle
Degree, the femoral shaft fixing hole screw and the angle of plane where the steel plate bottom are 75~105 °, and the bigelow's septum is fixed
The angle of plane is 120~150 ° where hole screw and the steel plate bottom, the first femoral head fixing hole screw with it is described
The angle of plane is 105~135 ° where steel plate bottom, the second femoral head fixing hole screw and steel plate bottom place
The angle of plane is 75~105 °.
Preferably, the femoral shaft fixing hole central shaft and the angle of plane where the steel plate bottom are 90 °, the stock
Key fixing hole screw tail can deviate 0~15 ° of the femoral shaft fixing hole axis and make multiaxial motion.
Preferably, the bigelow's septum fixing hole central shaft and the angle of plane where the steel plate bottom are 135 °, it is described
Bigelow's septum fixing hole screw tail can deviate 0~15 ° of the bigelow's septum fixing hole axis and make multiaxial motion.
Preferably, the angle of plane where the first femoral head fixing hole and the steel plate bottom is into 120 °~130 °,
The first femoral head fixing hole screw tail can deviate 0~15 ° of the first femoral head fixing hole axis and make multiaxial motion；It is described
Second femoral head fixing hole and the angle of plane where the steel plate bottom are in 90 °, the second femoral head fixing hole screw tail
0~15 ° of the second femoral head fixing hole axis can be deviateed and make multiaxial motion.
Preferably, width is gradually reduced the steel plate from top to bottom, and the steel plate bottom is plane, and top is and femur
The curved surface that the anatomical structure of near-end matches；With this using when the steel plate top can adhere well to greater trochanter of femur
Position.
Preferably, a length of 12 centimetres of the steel plate；A width of 3 centimetres of upper end, a width of 2.5 centimetres of lower end；Thickness is 0.5 centimetre.
Preferably, Interal fixation hole screw is a diameter of 6.5 millimeters of hollow lag screw.
Preferably, the steel plate material is pure titanium metal, the hollow lag screw material is titanium alloy.
The beneficial effects of the utility model are：The screw hole is divided into large aperture and small-bore section, the small-bore section
Inclined-plane or cambered surface design so that the screw can deviate 0~15 ° of the screw hole axis and make multiaxial motion, and the screw thread
Tail cap is screwed onto in the large aperture section and locks the afterbody of the screw, and then screw locking is had into fixed angle.
The adjustable angular range of screw is 0~15 ° of the screw hole axis and can locked by the screw thread tail cap, can both be fitted
Answer the near end of thighbone structure of Different Individual, and the screw it is locked after be not easy to loosen, turn into firm one with the steel plate
Individual entirety, fixing intensity is big and stability is high, can effectively help pressed reduction of fracture, promotes union, can greatly improve pair
The success rate that fracture of neck of femur is fixed.
Brief description of the drawings
Fig. 1 is the front view of the inner fixing device of the present utility model for fracture of neck of femur；
Fig. 2 is the side view of the inner fixing device of the present utility model for fracture of neck of femur；
Fig. 3 is that this uses the local sectional view of the screw hole of the new inner fixing device for fracture of neck of femur；
Fig. 4 is the multiaxial motion schematic diagram that this uses the new inner fixing device for fracture of neck of femur；
Marked in figure：
Steel plate 1, femoral shaft fixing hole 11, bigelow's septum fixing hole 12, the first femoral head fixing hole 13, the second femoral head are fixed
Hole 14,
Screw 2, femoral shaft fixing hole screw 21, bigelow's septum fixing hole screw 22, the first femoral head fixing hole screw 23, the
Two femoral head fixing hole screws 24,
Screw thread tail cap 3.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.It should be understood that following examples are only used for
Bright the utility model is not for restriction the scope of the utility model.
Embodiment 1
Fig. 1 and Fig. 2 show the inner fixing device for fracture of neck of femur of the preferred embodiment of the utility model one, including
Steel plate 1 and six pieces of screws 2.
The width of steel plate 1 is gradually reduced from top to bottom, and bottom is plane, and top is the anatomical structure kissing near end of thighbone
The curved surface of conjunction, from bottom to top every provided with six screw holes on steel plate 1, it is followed successively by two femoral shaft fixing holes, 11, bigelow's septums
12, two the first femoral head fixing holes 13 of fixing hole and a second femoral head fixing hole 14.Six of which screw hole longitudinal direction
It is uniformly distributed, is laterally alternately arranged and is spaced gradual increase from bottom to top.The central shaft of femoral shaft fixing hole 11 and the bottom of steel plate 1
The angle of place plane is 90 °.The central shaft of bigelow's septum fixing hole 12 and the angle of plane where the bottom of steel plate 1 are 135 °.First
The angle of plane is into 120 °~130 ° where femoral head fixing hole 13 and the bottom of steel plate 1；Second femoral head fixing hole 14 and steel plate
The angle of plane is in 90 ° where 1 bottom.
Six pieces of screws 2 are hollow lag screw, including two pieces of femoral shaft fixing holes corresponding with femoral shaft fixing hole 11
21, one pieces of screw, 22, two pieces of bigelow's septum fixing hole screw corresponding with bigelow's septum fixing hole 12 and the first femoral head fixing hole 13
Second femoral head fixing hole spiral shell of corresponding first femoral head fixing hole screw 23 and one piece and the second femoral head fixing hole 14
Nail 24.
As shown in Figures 3 and 4, each screw hole is in step-like, is divided into large aperture section and small-bore section, and large aperture section is provided with interior
Screw thread；Each afterbody of screw 2 protrusion and diameter are more than the aperture of small-bore section, and each screw afterbody is furnished with a screw thread tail cap 3,
Screw thread tail cap 3 has the external screw thread that is matched with the internal thread of large aperture section, and screw thread tail cap 3 is screwed onto in the section of large aperture and by screw
2 afterbody locking.And small-bore section inwall is inclined-plane, when being fastened on this afterbody of screw 2 in the section of small-bore, as shown in figure 4, spiral shell
Nail 2 can deviate 0~15 ° of screw hole axis and make the multiaxial motion in 30 °.
Preferably, a length of 12 centimetres of steel plate 1, a width of 3 centimetres of upper end, lower end is 2.5 centimetres, and thickness is 0.5 centimetre.Spiral shell
Nail 2 is a diameter of 6.5 millimeters of hollow lag screw, and length can have different selections according to the femur form difference of patient.
Operation is in use, steel plate 1 is attached on the outside of near end of thighbone, the top of steel plate 1 adhere well to greater trochanter of femur
Position, first at bigelow's septum fixing hole 12 guide pin is squeezed into by locking bushing, whether the position of fluoroscopic examination guide pin is located at stock
Bigelow's septum fixing hole screw 22 is correctly then squeezed into the back lower place of bone neck, position along guide pin, and the femur of bigelow's septum fixing hole screw 22 is indulged
Implanted femur is dry obliquely and steel plate 1 is tentatively fixed on femur by femoral head into 135 ° of angle lappings for axle, and screw thread is used in implantation afterwards in place
Tail cap 3 locks.Then suitable angle is selected according to patient femur's morphology proximal, squeezes into the first femoral head fixing hole 13 and second
6.5 millimeters of drill bit bores of diameter ￠ are correctly then used in the guide pin of femoral head fixing hole 14, position, are implanted into two piece first along guide pin successively
Femoral head fixing hole screw 23 and one piece of second femoral head fixing hole screw 24, and locked with screw thread tail cap 3, two piece of first femur
Head fixing hole screw 23 and the femur longitudinal axis into 120 °~130 ° angles and parallel to the neck of femur longitudinal axis (specific angle varies with each individual),
Second femoral head fixing hole screw 24 is then perpendicular to the femur longitudinal axis.Finally use 6.5 millimeters of bottoms of drill steel plate 1 of diameter ￠ two
Femoral shaft fixing hole 11, steel plate 1 is fixed on femur dry doubling screw thread tail cap 3 with two pieces of femoral shaft fixing hole screws 21 and locked,
Femoral shaft fixing hole screw 21 so far completes whole fixing step perpendicular to the femur longitudinal axis.
Wherein, the first femoral head fixing hole screw 23 is used to connect the neck of femur of jackknifing, applies neck of femur longitudinal axis axial direction
Pulling force, promote union；Second femoral head fixing hole screw 24 and bigelow's septum fixing hole screw 22 both sides above and below neck of femur
Apply pulling force；Steel plate 1 then can be being further fixed in femoral shaft by femoral shaft fixing hole screw 21.Above-mentioned all screws 2
It is locked in by screw thread tail cap 3 in the screw hole of steel plate 1, steel plate 1 plays a part of substituting near end of thighbone cortex, there is screw 2
One firm pedestal, steel plate 1 turn into a firm entirety with screw 2, can conduct the stress for near-end of fracturing by steel plate 1
To femoral shaft, the stability of fracture site after resetting can be strengthened.Screw 2 can deviate 0~15 ° of the axis of screw hole and make in 30 °
Multiaxial motion, implant angle can be determined according to the actual conditions of different individual near end of thighbone.And screw thread tail cap 3 is by screw
After 2 lockings screw 2 can be avoided to loosen or deflect away from neck of femur, can effectively play pressurization, improve fixing intensity.To sum up,
In inner fixing device of the present utility model for fracture of neck of femur, steel plate 1, screw 2 and screw thread tail cap 3 are mutually coordinated, fixed
Intensity is big and stability is high, can effectively help pressed reduction of fracture, promotes union, can greatly improve and fracture of neck of femur is consolidated
Fixed success rate.
The preferred embodiment created to the utility model above is illustrated, but the utility model is created not
It is limited to embodiment, those skilled in the art are a variety of etc. without prejudice to can also make under the utility model precondition for innovation
Same modification or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (7)
1. a kind of inner fixing device for fracture of neck of femur, it includes steel plate and six pieces of screws；It is respectively equipped with the steel plate
Six screw holes of corresponding six pieces of screws：Two femoral shaft fixing holes are arranged on the bottom of steel plate, and corresponding two femoral shafts are fixed
Hole screw；One bigelow's septum fixing hole is arranged in the middle part of steel plate, a corresponding bigelow's septum fixing hole screw；Two the first femorals head
Fixing hole is arranged on steel plate top, corresponding two femoral head fixing hole screws；One the second femoral head fixing hole is arranged on steel plate
Top and above the first femoral head fixing hole, a corresponding second femoral head fixing hole screw；Characterized in that,
The screw hole is in step-like, is divided into large aperture section and small-bore section, the large aperture section is provided with internal thread, the aperture
Footpath section inwall is inclined-plane or cambered surface；In the hole of the large aperture section and the small-bore section between the screw afterbody protrusion and diameter
Between footpath；Each screw afterbody is furnished with a screw thread tail cap, and the screw thread tail cap has the outer spiral shell matched with the internal thread
Line, the screw thread tail cap are screwed onto in the large aperture section of the screw hole and the corresponding screw are locked into fixed angle,
The femoral shaft fixing hole screw and the angle of plane where the steel plate bottom are 75~105 °, the bigelow's septum fixing hole spiral shell
Nail and the angle of plane where the steel plate bottom are 120~150 °, the first femoral head fixing hole screw and the steel plate
The angle of plane is 105~135 ° where bottom, the second femoral head fixing hole screw and plane where the steel plate bottom
Angle be 75~105 °.
2. it is used for the inner fixing device of fracture of neck of femur as claimed in claim 1, it is characterised in that the femoral shaft fixing hole
Central shaft and the angle of plane where the steel plate bottom are 90 °, and the femoral shaft fixing hole screw tail can deviate the femur
Dry 0~15 ° of fixing hole axis makees multiaxial motion.
3. it is used for the inner fixing device of fracture of neck of femur as claimed in claim 1, it is characterised in that the bigelow's septum fixing hole
Central shaft and the angle of plane where the steel plate bottom are 135 °, and the bigelow's septum fixing hole screw tail can deviate the femur
0~15 ° away from fixing hole axis is made multiaxial motion.
4. it is used for the inner fixing device of fracture of neck of femur as claimed in claim 1, it is characterised in that first femoral head is consolidated
Hole is determined with the angle of plane where the steel plate bottom into 120 °~130 °, and the first femoral head fixing hole screw tail can deviate
0~15 ° of the first femoral head fixing hole axis makees multiaxial motion；The second femoral head fixing hole and the steel plate bottom institute
It is in 90 ° in the angle of plane, the second femoral head fixing hole screw tail can deviate the second femoral head fixing hole axis 0~
15 ° are made multiaxial motion.
5. it is used for the inner fixing device of fracture of neck of femur as claimed in claim 1, it is characterised in that the steel plate is from top to bottom
Width is gradually reduced, and the steel plate bottom is plane, and top is the curved surface to be matched with the anatomical structure of near end of thighbone.
6. it is used for the inner fixing device of fracture of neck of femur as claimed in claim 1, it is characterised in that a length of 12 lis of the steel plate
Rice；A width of 3 centimetres of upper end, a width of 2.5 centimetres of lower end；Thickness is 0.5 centimetre.
7. it is used for the inner fixing device of fracture of neck of femur as claimed in claim 1, it is characterised in that Interal fixation hole spiral shell
Follow closely the hollow lag screw for a diameter of 6.5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621368971.2U CN207012228U (en) | 2016-12-14 | 2016-12-14 | A kind of inner fixing device for fracture of neck of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621368971.2U CN207012228U (en) | 2016-12-14 | 2016-12-14 | A kind of inner fixing device for fracture of neck of femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207012228U true CN207012228U (en) | 2018-02-16 |
Family
ID=61459823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621368971.2U Expired - Fee Related CN207012228U (en) | 2016-12-14 | 2016-12-14 | A kind of inner fixing device for fracture of neck of femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207012228U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112603514A (en) * | 2020-12-28 | 2021-04-06 | 上海市第六人民医院 | Plum blossom direction steel sheet for femoral neck fracture |
| CN113712654A (en) * | 2021-09-02 | 2021-11-30 | 中国人民解放军总医院第四医学中心 | Dynamic locking system for femoral neck |
-
2016
- 2016-12-14 CN CN201621368971.2U patent/CN207012228U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112603514A (en) * | 2020-12-28 | 2021-04-06 | 上海市第六人民医院 | Plum blossom direction steel sheet for femoral neck fracture |
| CN113712654A (en) * | 2021-09-02 | 2021-11-30 | 中国人民解放军总医院第四医学中心 | Dynamic locking system for femoral neck |
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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: 20180216 Termination date: 20211214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |