CN105596069B - A kind of inner fixing device for treating fracture of neck of femur - Google Patents
A kind of inner fixing device for treating fracture of neck of femur Download PDFInfo
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- CN105596069B CN105596069B CN201610090000.4A CN201610090000A CN105596069B CN 105596069 B CN105596069 B CN 105596069B CN 201610090000 A CN201610090000 A CN 201610090000A CN 105596069 B CN105596069 B CN 105596069B
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- fixing screws
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- 208000020089 femoral neck fracture Diseases 0.000 title claims abstract description 23
- 210000000689 upper leg Anatomy 0.000 claims description 9
- 230000008901 benefit Effects 0.000 abstract description 8
- 230000002980 postoperative effect Effects 0.000 abstract description 6
- 208000001132 Osteoporosis Diseases 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 208000010392 Bone Fractures Diseases 0.000 description 14
- 206010017076 Fracture Diseases 0.000 description 14
- 210000000988 bone and bone Anatomy 0.000 description 11
- 230000006641 stabilisation Effects 0.000 description 6
- 238000011105 stabilization Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000002970 Coxa Vara Diseases 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 108010048734 sclerotin Proteins 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 208000006386 Bone Resorption Diseases 0.000 description 1
- 206010051055 Deep vein thrombosis Diseases 0.000 description 1
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 206010035664 Pneumonia Diseases 0.000 description 1
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- 208000004210 Pressure Ulcer Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001079814 Symphyotrichum pilosum Species 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 241000469816 Varus Species 0.000 description 1
- 206010047249 Venous thrombosis Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000024279 bone resorption Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 210000002745 epiphysis Anatomy 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003195 fascia Anatomy 0.000 description 1
- 210000002391 femur head Anatomy 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 206010033675 panniculitis Diseases 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000004304 subcutaneous tissue Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 210000001694 thigh bone Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8665—Nuts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B2017/681—Alignment, compression, or distraction mechanisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The present invention relates to a kind of inner fixing devices for treating fracture of neck of femur, comprising: fixing screws and instant pressurizing device, the front of the fixing screws are provided with the first screw thread, and the tail end of the fixing screws is arranged in the instant pressurizing device.The invention has the benefit that passing through the mutual cooperation of fixing screws and instant pressurizing device, it can be realized between the instant pressurization far and near end sclerite, and by take advantage of a situation move back nail effect avoid cutting of the postoperative ailhead to femoral head, to overcome the shortcomings of hollow nail in the prior art and locking nail-plate, it is thus more suitable for treating while suffering from the aged patients with femoral neck fracture patient of severe osteoporosis, by applying the present apparatus, minimally invasiveization treatment and the early loading of such patient are helped to realize.
Description
Technical field
The invention belongs to the field of medical instrument technology, and in particular to a kind of inner fixing device for treating fracture of neck of femur.
Background technique
Fracture of neck of femur is a kind of clinically very common fracture mode, especially for mid-aged population, disease incidence pole
It is high.At present there are two types of the methods of surgical of fracture of neck of femur most mainstream, first is that artificial femoral head replacement, second is that solid in hollow nail
It is fixed.Artificial femoral head replacement is since its operation wound is big, and blood loss is more, and postoperative complications are more, and elderly patient is often difficult to be resistant to；And
Fix that relative wound is small, and operating time is short in hollow nail, bleeding is few, for merging the elderly patients of a variety of internal medicine illness usually more
It is suitable.But fixed disadvantage is in hollow nail, since the depth that hollow nail pierces femoral head is limited thus disconnected for fracturing
Instant pressurization between end not enough, and follows closely and mutually disperses to can not form resultant force between nail, and nail tail is inadequate to the holding power of sclerotin.In addition
The elderly patient of fracture of neck of femur is often associated with serious osteoporosis, when between fracture site with the presence of huge shearing force
When, such as base type fracture of neck of femur, it be easy to cause coxa vara and Unstable internal fixation.Therefore, the patient after hollow nail is fixed, usually
Longer time of lying in bed is needed, thus will increase the wind of the long-term beds complication such as pneumonia, deep vein thrombosis, bedsore generation
Danger.
Find there are many scholars to have devised new interior fixation at present through newest domestic and foreign literature and patent retrieval
Device attempts to improve fixation in hollow nail.Their improved focuses are focused primarily upon to combine even to lock by nail-plate and be mentioned
For the stress protection between the angle stabilization and nail and bone between nail-plate.But they have ignored another important details,
Be exactly hollow nail instant pressure capacity it is inadequate.Gap after hollow nail is fixed between fracture site cannot effectively eliminate, and be unfavorable for
The first intention of bone, later period due to bone resorption between the broken ends of fractured bone, can be such that gap further increases.So, the sclerite of proximal end is just
The powerful support of distal bone folded block is lacked, stress is excessively concentrated between ailhead and femoral head bone when patient bears a heavy burden, and is increased greatly
The risk for having added hollow nail to cut out from femoral head.More seriously, it due to being locked between nail tail and steel plate, is further exacerbated by
Stress between ailhead and femoral head bone is concentrated.Such as clinically start the interior fixed improvement device of application recentlyPrecisely due to it not only pressurizes immediately, aspect is improved insufficient, and nail-plate locks, and postoperative screw is caused to cut out
Incidence is still higher, with stationary phase ratio in hollow nail generally used now without clear superiority.
Summary of the invention
In order to solve the above problems existing in the present technology, the present invention provides a kind of interior fixations for treating fracture of neck of femur
Device has both angle stabilization and the instant pressurizing device for moving back nail effect of taking advantage of a situation by being arranged on femoral shaft lateral wall, can not only
It is enough to realize that the instant pressurization between the sclerite of far and near end is acted on angle stabilization, and can take advantage of a situation and move back nail, reduce what screw was cut out
Risk.The fixture structure of the design is simple, facilitates implementation.
The technical scheme adopted by the invention is as follows: a kind of inner fixing device for treating fracture of neck of femur, comprising: fixing screws
With instant pressurizing device, the front of the fixing screws is provided with the first screw thread, and the instant pressurizing device is arranged described solid
Determine the tail end of screw, the tail end of the fixing screws offers lock chamber, and the lock chamber is in regular hexagonal prism shape.
Technical solution of the present invention advanced optimizes, and the instant pressurizing device includes that the screw tail end is arranged in
Two screw threads and pressurizing nut, the pressurizing nut match setting with second screw thread.
Technical solution of the present invention advanced optimizes, and the diameter of thread of first screw thread is greater than the column of the fixing screws
Body diameter；The diameter of thread of second screw thread is equal to the column diameter of the fixing screws, and first screw thread and described
The direction of second screw thread is identical.
Technical solution of the present invention advanced optimizes, and the instant pressurizing device further includes fixed plate, the fixed plate
Medial surface is the arc panel being adapted with femoral shaft, offer in the fixed plate nail hole for allowing the opposite sliding of lock nut and
To install the locking nail hole of lock screw.
Technical solution of the present invention advanced optimizes, and the fixed plate includes femoral head fixed area and femoral shaft fixed area
Domain, the fixing screws are mounted on the femoral head fixed area by the lock nut that can be slided relatively in nail hole, described
Femoral shaft fixed area is equipped with locking nail by locking nail hole.
Technical solution of the present invention advanced optimizes, and fixed station, the top surface of the fixed station are provided in the nail hole
It is in 130 ° of angles with the fixed plate.
Technical solution of the present invention advanced optimizes, and the pressurizing nut is cylindrical body, and the pressurizing nut is horizontally
It is provided with 1/4 journey~1/2 journey internal screw thread, the rear portion of the pressurizing nut is arranged in the internal screw thread.
Technical solution of the present invention advanced optimizes, and disassembly slot is provided on the tail end side of the pressurizing nut, described
The number at least two of slot is dismantled, and all disassembly slots are divided in a ring centered on the center of circle of the pressurizing nut
Cloth.
Technical solution of the present invention advanced optimizes, and the instant pressurizing device further includes matching with the pressurizing nut
Screwdriver, be provided on the working face of the screwdriver and protrusion that the disassembly slot matches.
Technical solution of the present invention advanced optimizes, and the number of the fixing screws is 3~5.
The invention has the benefit that
1, an instant pressurizing device is arranged by the tail end in fixing screws, it can be to the fracture of neck of femur after resetting
The sclerite at line both ends more efficiently pressurizes, and is more advantageous to the exhausted of union to can not only provide between fracture site
To stabilization, and make fractured near end block set nail just more effectively supported by distal bone folded block at once, reduce fixing screws point
Hold the dissection to femoral head.
2, by the way that the fixation that there is angle stabilization relationship with fixing screws and pressurizing nut is arranged on femoral shaft lateral wall
Plate is realized to the angle stabilization through the fixed fracture line distance end sclerite of screw, to overcome individually with hollow nail
Deficiency more efficiently prevents from the generation of postoperative coxa vara.
3, it by the opposite sliding between pressurizing nut and fixed plate, is retreated for the postoperative fixing screws for being possible to appearance pre-
Certain space is stayed, the stress avoided between fixing glue tip and femoral head to a certain extent increases, to further decrease
The risk that femoral head is cut in fixing screws proximal end.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the inner fixing device of present invention treatment fracture of neck of femur；
Fig. 2 is the structural schematic diagram of fixed plate in pressurizing device immediately of the invention；
Fig. 3 is the schematic diagram of the section structure of fixed plate in pressurizing device immediately of the invention；
Fig. 4 is the structural schematic diagram of pressurizing nut in pressurizing device immediately of the invention；
Fig. 5 is the structural schematic diagram of fixing screws of the present invention；
Fig. 6 is the present invention looks up structural representation of fixing screws of the present invention.
In figure: 1, fixing screws；2, the first screw thread；3, pressurizing nut；31, slot is dismantled；4, the second screw thread；5, fixed plate；
52, fixed station；51, nail hole；53, nail hole is locked；6, lock chamber.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
As shown in figures 1 to 6, the present invention provides a kind of inner fixing devices for treating fracture of neck of femur, comprising: fixed spiral shell
Nail 1 and instant pressurizing device, the front of the fixing screws 1 are provided with the first screw thread 2, and the instant pressurizing device is arranged in institute
State the tail end of fixing screws 1.The lock chamber of regular hexagonal prism shape is opened up in the tail end of fixing screws 1, it is therefore an objective to pass through the lock chamber 6
Fixing screws are screwed into femoral head with screwdriver, operation when convenient preliminary fixed；The instant pressurizing device includes setting
Set the second screw thread 4, pressurizing nut 3 and the fixed plate 5 in the screw tail end, the pressurizing nut 3 and second screw thread 4
Setting is matched, and the power orientation of pressurization is transmitted to by epiphysis by fixed plate 5.It is carried out at the far and near end to fracture tentatively fixed
Afterwards, by pressurizeing immediately, further shorten the distance between fracture site, on the one hand increase the frictional force between fracture site,
The fine motion between fracture site is reduced, so that the skeletonization for reducing the postoperative fracture broken ends of fractured bone is bad and bone absorption, is conducive to fracture
First intention；On the other hand femoral head is made to obtain the powerful support of distal bone folded block at once, thus in the case of reducing weight bearing
Cutting of 1 tip of fixing screws to femoral head.
In addition, the nail hole diameter of fixed station 52 should be identical as the outer diameter of the first screw thread 2 in Fig. 1.
As shown in figure 5, the diameter of thread of first screw thread 2 be greater than the fixing screws 1 column diameter, the design with
The existing hollow nail in this field is identical；The diameter of thread of second screw thread 4 is equal to the column diameter of the fixing screws 1；Institute
Stating instant pressurizing device further includes fixed plate 5, and the medial surface of the fixed plate 5 is the arc being adapted with femoral shaft.Such as Fig. 2 and
Shown in Fig. 3, the fixed plate includes femoral head fixed area and femoral shaft fixed area, and the fixing screws are installed by nail hole
In the femoral head fixed area, the femoral shaft fixed area is equipped with lock screw by locking nail hole 53.It fixes inside
Postoperative, the early loading of patient would generally apply certain pressure to femoral head, since fracture site gradually absorbs, can make femur
Head sinks, and fixing screws in the prior art 1 usually can not move back nail due to locking with fixed plate, lead to fixing screws 1
Tip and femoral head bone between stress increase then cut femoral head.And the advantages of the design, is, due to passing through fixed spiral shell
Opposite sliding between nail and fixed plate, for fixing screws as femoral head sinks to providing mobile leeway together, to make
It is not in that stress increases between the tip and femoral head of fixing screws 1 after femoral head is pressurized, it is existing so as to avoid above-mentioned cutting
The generation of elephant.
The present invention is best suited for merging the aged patients with femoral neck fracture patient of osteoporosis.On the one hand artificial thigh bone is avoided
On the other hand the disadvantage that the blood loss of displacement technique is more, wound is big avoids hollow nail tail end stress concentration, the holding to loose sclerotin
The shortcomings that power is poor, fights femoral head varus scarce capacity.More importantly moving back nail effect, energy based on pressurizeing and taking advantage of a situation immediately
More effectively reduce the risk of screw cutting femoral head.By applying the present apparatus, minimally invasiveization for helping to realize elderly patient is controlled
Treatment and early loading.
Preferably, in the course of surgery, the number of the fixing screws 1 is 4, is fixed on the top of fixed plate 5, is in four
Angle is fixed, and anti-rotation function can be effectively realized.There are two lock nail hole 53, the locking for the lower part setting of the fixed plate 5
Screw is fixed in femoral shaft by 2 locking nail hole 53 in fixed plate 5.
1/4 journey~1/2 journey screw thread is set on the inner wall of fixture nut, the inner wall for having one section of fixture nut can be made and is consolidated
The nail rod for determining screw realizes face contact, rather than is contacted by the occlusion of screw thread, which can prevent in clinical use
Only due to femoral head to the pressure conduction of fixing screws at fixture nut, the screw thread of fixing screws tail end is damaged, is kept away
Exempt to slip between fixture nut and fixing screws after fixing for a long time, to increase the stability of instant pressurizing device.
The method in clinical application of the inner fixing device of fracture of neck of femur is treated in the present invention are as follows:
After fracture of neck of femur closed reduction, patient is first placed in Ipsilateral hip with 1 piece of Kirschner wire, makes kirschner on normotopia X-ray film
Needle is located at the center of neck of femur and direction is consistent with the direction of the neck of femur longitudinal axis.It is with Kirschner wire and lateral side of femur cortex intersection
Center prolongs femur y direction in lateral side of femur and cuts skin, subcutaneous tissue and fascia late, appears on the outside of femoral shaft.It will fix
Plate 5 is attached on the outside of femoral shaft, the nail hole 51 of the back lower place will be located in matched 1 guide pin orientation sleeve insertion fixed plate 5, bored
Enter 1 piece of thin guide pin, guide pin end on the X-ray film of positive side position to be advisable by fracture line and apart from femoral head contour edge 0.5cm,
And guide pin is located at the back lower place of neck of femur without being pierced by cortex as far as possible.The position of fixed plate is then finely tuned, and equally leads another 1
Needle orients the nail hole 51 for being located at front upper place in sleeve insertion fixed plate 5, pierces the 2nd piece of thin guide pin, and equally pass through fluoroscopy during operation
Determine whether the position of the guide pin is suitable, is located at the front upper place of neck of femur as far as possible without being pierced by cortex.Then use dipstick
Depth measurement, and replace screw tap orientation sleeve and then twisted respectively with outer six sides screwdriver with hollow screw tap drill hole in above-mentioned 2 nail hole 51
Enter 2 pieces of fixing screws 1.2 nail hole 51 with same method respectively in front lower place and back upper place are sequentially screwed into other 2 pieces of fixations
Screw 1.It is then successively each stubborn in the tail end of every 1 piece of fixing screws 1 with the screwdriver matched with the disassembly slot 31 on pressurizing nut 3
Upper 1 piece of pressurizing nut 3 realizes uniform pressurization immediately between fracture site.It is twisted finally by the locking nail hole 53 of 5 distal end of fixed plate
Enter 2 pieces of lock screws；After normal developing suture, operation terminates.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. a kind of inner fixing device for treating fracture of neck of femur, comprising: fixing screws (1) and instant pressurizing device, feature exist
In the front of the fixing screws (1) is provided with the first screw thread (2), and the instant pressurizing device is arranged in the fixing screws
(1) tail end of tail end, the fixing screws (1) offers lock chamber (6), and the lock chamber is in regular hexagonal prism shape；
The instant pressurizing device includes the second screw thread (4), pressurizing nut (3) and fixed plate that the screw tail end is arranged in
(5), the pressurizing nut (3) matches setting with second screw thread (4)；The medial surface of the fixed plate (5) is and femur
Adaptable arc panel is done, offers nail hole (51) on the fixed plate (5), it being capable of phase between the fixing screws and fixed plate
To sliding；
Fixed station is provided in the nail hole (51), nail hole includes the first nail hole and the second nail being connected with first nail hole
Hole, the diameter of second nail hole are greater than the diameter of first nail hole, the diameter of first nail hole and first screw thread
(2) outer diameter is identical, and the diameter of second nail hole is identical as the outer diameter of the pressurizing nut (3)；
The diameter of thread of first screw thread (2) is greater than the column diameter of the fixing screws (1)；Second screw thread (4)
The diameter of thread is equal to the column diameter of the fixing screws (1), and the side of first screw thread (2) and second screw thread (4)
To identical.
2. the inner fixing device for the treatment of fracture of neck of femur according to claim 1, it is characterised in that: the fixed plate (5)
Including femoral head fixed area and femoral shaft fixed area, the fixing screws (1) are mounted on the femur by nail hole (51)
Head fixed area, the femoral shaft fixed area are equipped with locking nail by locking nail hole (53).
3. the inner fixing device for the treatment of fracture of neck of femur according to claim 1, which is characterized in that the pressurizing nut
It (3) is cylindrical body, the pressurizing nut (3) is horizontally provided with 1/4 journey~1/2 journey internal screw thread, the internal screw thread setting
At the rear portion of the pressurizing nut (3).
4. the inner fixing device for the treatment of fracture of neck of femur according to claim 3, it is characterised in that: the pressurizing nut
(3) it is provided with disassembly slot (31) on tail end side, the number at least two of disassembly slot (31), and all described tear open
Slot (31) is unloaded to be distributed in a ring centered on the center of circle of the pressurizing nut (3).
5. the inner fixing device for the treatment of fracture of neck of femur according to claim 4, it is characterised in that: the instant pressurization dress
Setting further includes the screwdriver matched with the pressurizing nut (3), is provided on the working face of the screwdriver and the disassembly slot
(31) protrusion matched.
6. the inner fixing device for the treatment of fracture of neck of femur according to claim 1, it is characterised in that: the fixing screws
(1) number is 3~5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090000.4A CN105596069B (en) | 2016-02-17 | 2016-02-17 | A kind of inner fixing device for treating fracture of neck of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090000.4A CN105596069B (en) | 2016-02-17 | 2016-02-17 | A kind of inner fixing device for treating fracture of neck of femur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105596069A CN105596069A (en) | 2016-05-25 |
| CN105596069B true CN105596069B (en) | 2019-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610090000.4A Active CN105596069B (en) | 2016-02-17 | 2016-02-17 | A kind of inner fixing device for treating fracture of neck of femur |
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| Country | Link |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107260277A (en) * | 2017-06-01 | 2017-10-20 | 成都贝施美生物科技有限公司 | A kind of fracture connector of stable connection |
| CN108852493B (en) * | 2018-07-13 | 2023-07-14 | 湖州学院 | A New Type of Femoral Neck Locking Compression Plate |
| CN110974387A (en) * | 2019-12-23 | 2020-04-10 | 首都医科大学附属北京潞河医院 | A Novel Support Compression Screw for Femoral Neck Fractures |
Citations (2)
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| CN2347550Y (en) * | 1998-12-08 | 1999-11-10 | 温巨平 | Holder for fracture of femoral neck and intertrochanter fracture of femur |
| CN201684012U (en) * | 2010-06-03 | 2010-12-29 | 张春雷 | Limited dynamic hip screw |
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| US4530355A (en) * | 1982-01-18 | 1985-07-23 | Richards Manufacturing Co., Inc. | Compression screw assembly |
| US4612920A (en) * | 1984-11-06 | 1986-09-23 | Zimmer, Inc. | Compression hip screw |
| FR2711505B1 (en) * | 1993-10-25 | 1995-12-29 | Tornier Sa | Device for synthesizing fractures of the upper end of the femur. |
| US5871485A (en) * | 1998-03-18 | 1999-02-16 | Rao; G.V. Subba | Device for internal fixation of femoral neck fractures |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2347550Y (en) * | 1998-12-08 | 1999-11-10 | 温巨平 | Holder for fracture of femoral neck and intertrochanter fracture of femur |
| CN201684012U (en) * | 2010-06-03 | 2010-12-29 | 张春雷 | Limited dynamic hip screw |
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