CN107693098A - A kind of anti-loose pedicle nail bar system - Google Patents
A kind of anti-loose pedicle nail bar system Download PDFInfo
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- CN107693098A CN107693098A CN201711044874.7A CN201711044874A CN107693098A CN 107693098 A CN107693098 A CN 107693098A CN 201711044874 A CN201711044874 A CN 201711044874A CN 107693098 A CN107693098 A CN 107693098A
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- plug screw
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- plate
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- 210000000988 bone and bone Anatomy 0.000 claims abstract description 21
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 2
- 239000007943 implant Substances 0.000 abstract description 2
- 238000001727 in vivo Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 17
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 210000001835 viscera 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, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7064—Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Abstract
The present invention relates to a kind of anti-loose pedicle nail bar system, people's implants in vivo technical field of category medicine equipment.The anti-loose pedicle nail bar system by two hold-down bars, enter bone screws, locking head, connecting plate and locking plug screw form；It is mutually corresponding respectively on every hold-down bars that one or more locking heads are housed；It is connected with each other between corresponding locking head by connecting plate；On the hold-down bars of locking head both sides by lock plug screw equipped with it is multiple enter bone screws：Locking head is made up of locking bed and locking stud；Locking bed internal thread is provided with locking stud；Hold-down bars through hole is provided with locking bed below locking stud.The anti-loose pedicle screw-rod system architecture is reasonable, ingenious in design；Solve the problems, such as the parts such as the locking plug screw that existing pedicle nail bar system has exist it is certain release risk and locking head assembling is inconvenient, meet the needs of patient's safe handling for a long time.
Description
Technical field
The present invention relates to a kind of anti-loose pedicle nail bar system, people's implants in vivo technical field of category medicine equipment.
Background technology
Backbone is the major bearing structures of human body, complicated, has and bears a heavy burden, keeps total balance of the body, motion, protection spinal cord
With the function of internal organ, extremely important effect is played in the physiological activity of human normal.When backbone generation is more serious
When fracturing or the lesions such as tumor of spine occur, the operation of spine structure reconstruction need to be often carried out, to stablize backbone, maintains daily physiology
Activity is born a heavy burden.At present, the more but most strong internal fixation formula of the art formula of spinal reconstruction use is generally pedicle screw-rod system
It is fixed in system.Existing pedicle nail bar system by hold-down bars, enter bone screws, locking head, connecting plate and locking plug screw form；Often
On individual hold-down bars respectively by lock plug screw be equipped with it is multiple enter bone screws；In operation, hold-down bars is completed with bone screws assembling is entered
Afterwards, it is necessary on each hold-down bars by way of " hooking " corresponding to load onto locking head；And loaded by corresponding locking head and connected
Fishplate bar；So apply to strengthen the stability of whole pedicle nail bar system.But when so assembling locking head and connecting plate, assembling
Process is cumbersome, and due to the limitation of existing pedicle screw-rod system architecture reason, human body is vibrated or muscle not
Under disconnected contractile motion, can also occur to lock head screw or lock the risk that plug screw loosens, come off, and further result in locking head or
Hold-down bars, connecting plate come off, and the locking plug screw or locking head screw, locking head, hold-down bars, connecting plate to come off easily draws in human body
Send out illness other, have great potential safety hazard, it is impossible to meet the needs that patient's long-term safety uses.
The content of the invention
It is an object of the invention to：It is simple in construction, reasonable in design to provide one kind, is deposited with solving existing pedicle nail bar system
Some locking plug screw, the first-class part of locking easily release the anti-loose pedicle nail bar system that inconvenient problem is assembled with locking head.
The technical scheme is that：
A kind of anti-loose pedicle nail bar system, it by two hold-down bars, enter bone screws, locking head, connecting plate and locking plug screw
Form；It is mutually corresponding respectively on every hold-down bars that one or more locking heads are housed；Pass through connection between corresponding locking head
Plate is connected with each other；On the hold-down bars of locking head both sides by lock plug screw equipped with it is multiple enter bone screws；It is characterized in that：Described
Locking head is made up of locking bed and locking stud；Locking bed internal thread is provided with locking stud；Lock the locking bed below stud
Inside it is provided with hold-down bars through hole；" ten " word cross-like is provided with connecting plate insertion between hold-down bars through hole and locking stud
Hole；Locking head is movably arranged on hold-down bars by hold-down bars through hole, connecting plate of the connecting plate through mutually corresponding locking head
Locking head is connected with each other after through hole；Each locking stud contradicts with connecting plate to be connected.
The cross section of described locking stud is to be similar to "convex" shaped.
The described bone screws that enter are made up of screw body and nail seat, and nail seat is U-typed body；The lower end of nail seat is provided with screw
Body；Nail seat upper end symmetry shape is connected with the armlet that fractures；Locking screw is threaded with by internal thread in nail seat and the armlet that fractures
Plug；Lock plug screw and contradict connection with hold-down bars.
Spanner sets of holes are provided with the top of described locking plug screw；The thread upper end termination of locking plug screw is provided with locking and opened
Mouthful.
The bottom of described locking plug screw is provided with locking and plays frame.
The top of described locking plug screw is provided with circular or polygonal locking plate, and circular or polygonal locking plate hardness is less than
The hardness of nail seat internal thread.
Locking slot is provided with the middle part of the thread tooth body of described locking plug screw, the upper end of locking slot extends to thread upper end
There is a segment distance termination, the lower end of locking slot from thread lower end termination.
Arc pressuring plate is provided between described locking plug screw and hold-down bars；Insertion shoulder hole is provided with locking plug screw；
The upper end of arc pressuring plate is provided with the bayonet lock of T-shaped card column or symmetry shape；Bayonet lock or T-shaped card column are through after penetrating the pore of shoulder hole
Extend to the inside of locking plug screw.
The bayonet lock termination of described arc pressuring plate upper end is connected with each other.
Respectively symmetrically shape is provided with latch for the corner of described arc pressuring plate, and locking ratchet is provided with latch；Nail
Locking teeth groove is provided with corresponding to the both sides side of seat, locking ratchet is connected with locking teeth groove interval clamping.
Retainer is provided with described nail seat；Retainer is made up of pressing plate and door shape holding rod；The bottom of pressing plate is set
There is concave arc curved surface；The both sides of pressing plate are respectively arranged with guiding journal stirrup；Symmetry shape is provided with a shape holding rod between guiding journal stirrup；Door
Locking ratchet is provided with the outer face of shape holding rod.
Described door shape holding rod is flexible；Guide the width of journal stirrup consistent with the spacing between the armlet that fractures, guiding
Journal stirrup is with fractureing armlet and nail seat is slidably connected.
Described locking plug screw is movably arranged on inside the door shape holding rod of retainer, and the U-typed medial shaft of nail seat is faced directly
On be provided with locking teeth groove, locking teeth groove is mutually corresponding with locking ratchet, and interval Snap joint.
Described retainer is made up of pressing plate, limiting plate and latch；The bottom of pressing plate is provided with concave arc curved surface；Pressing plate
Both sides are respectively arranged with guiding journal stirrup；Limited location plate on each guiding journal stirrup；Each guiding journal stirrup both sides are provided with latch, latch
On be provided with locking ratchet；Locking teeth groove is provided with corresponding to the both sides side of nail seat, locking ratchet blocks with locking teeth groove interval
Connect in succession.
Described latch is flexible, is provided with the inside of its upper end and frees inclined-plane.
Described locking plug screw is movably arranged on below retainer limiting plate, is locked and is set or do not set on the pressing plate below plug screw
Extruded hole；Locking plug screw is graded axial type；The taper end of locking plug screw is extended to inside extruded hole.
The radian of described concave arc curved surface is consistent with hold-down bars periphery radian.
Described screw body is fixedly connected with nail seat.
The upper end of described screw body is provided with rotation bulb；Rotate and be provided with spanner sets of holes at the top of bulb；Screw
After the bolt portion of body passes through nail seat, rotate bulb and be flexibly connected with nail seat；Rotate the nail seat internal thread connection above bulb
Limited location block.
Described limited block is " u "-shaped body, and through hole is provided with limited block；Through hole is flexibly connected with rotating bulb.
The lower end of described screw body is provided with fastening port.
One or more locking heads are housed on a described hold-down bars；Locked corresponding on another hold-down bars equipped with pressing plate
Tight head；It is connected with each other between pressing plate locking head and locking head by connecting plate.
Described pressing plate locking head is made up of pressing plate locking bed, clamping screw and connecting plate；Pressing plate locking bed is in hollow curved
Folding shape is simultaneously flexible；One end of pressing plate locking bed is provided with connecting plate jack；Connecting plate is movably installed with connecting plate jack；
Pressure hole is provided with pressing plate locking bed；Pressure hole intersects with connecting plate jack to be connected；The upper end of pressing plate locking head is provided with spiral shell
Bolt counterbore；Bolt hole is built with clamping screw；Screwed hole is provided with pressing plate locking bed below bolt hole；Clamping screw
It is threadedly coupled with screwed hole.
The head end of described connecting plate extends to the outer end of connecting plate jack；Set on the pressing plate locking bed of connecting plate tail end
There is pilot hole, the tail end of connecting plate expands, and the external diameter of connecting plate tail end enlargement is less than or equal to the internal diameter of pilot hole, connection
The external diameter of plate tail end enlargement is more than the internal diameter of connecting plate jack, and the enlargement of connecting plate tail end is limited to pressure hole by activity
It is interior.
The advantage of the invention is that：
The anti-loose pedicle nail bar system, it is rational in infrastructure, it is ingenious in design；On the basis of traditional nail-stick system, devise more
Kind prevents from locking the superstructure loosenings such as plug screw, the mode to come off and locking head is redesigned, and is not influenceing nail-stick system
Under normal use, it is ensured that hold-down bars is firm all the time to be fixed in bone screws, and simplifies the installation step of locking head,
Solve the parts such as the locking plug screw of existing pedicle nail bar system and exist and certain release risk and locking head assembling inconvenience
Problem, meet the needs of patient's safe handling for a long time.
Brief description of the drawings
Fig. 1 is the main structure diagram of the present invention；
Fig. 2 is the overlooking the structure diagram of the present invention；
Fig. 3 be Fig. 2 of the present invention in A-A to structural representation；
Fig. 4 is Fig. 1 left view structural representation；
Fig. 5 is the overlooking the structure diagram that the present invention enters bone screws；
Fig. 6 is the structural representation when screw body of the present invention is flexibly connected with nail seat；
Fig. 7 is that the upper end of screw body of the present invention sets main view and overlooking the structure diagram when rotating bulb；
Fig. 8 is the structural representation of the limited block of the present invention；
Fig. 9 is the main view and overlooking the structure diagram of the locking plug screw of the present invention；
Figure 10 is provided with structural representation during lock opening for the thread upper end termination of locking plug screw；
Figure 11 is structural representation when locking plug screw bottom is provided with locking bullet frame；
Figure 12 is that the locking of locking plug screw plays structural representation when frame is pressurized；
Figure 13 is provided with structural representation during polygonal locking plate for the top of locking plug screw；
Figure 14 is the overlooking the structure diagram of the locking plug screw in Figure 13 of the present invention；
Figure 15 is structural representation when locking slot is provided with the middle part of most of thread tooth body of locking plug screw；
Figure 16 is the structural representation of locking plug screw and arc pressuring plate；
Figure 17 is Figure 16 locking plug screw and the cross section structure diagram of arc pressuring plate；
Figure 18 is Figure 16 locking plug screw and the cross section structure diagram of arc pressuring plate；
Figure 19 is structural representation when bayonet lock struts in Figure 17；
Figure 20 is the structural representation when bayonet lock termination on arc pressuring plate is connected with each other；
Structural representation when Figure 21 is the bayonet lock clamping in Figure 20；
Figure 22 is structural representation when T-shaped card column is set on arc pressuring plate；
Figure 23 is the overlooking the structure diagram of nail seat when latch is set on arc pressuring plate；
Figure 24 is when latch is set on arc pressuring plate and the cross section structure diagram of locking plug screw；
Figure 25 is axle geodesic structure schematic diagram when latch is set on arc pressuring plate；
Figure 26 is when latch is set on arc pressuring plate and the cross section structure diagram of locking plug screw；
Figure 27 is axle geodesic structure schematic diagram when latch is set on arc pressuring plate；
Figure 28 is structural representation when retainer is provided with nail seat；
Figure 29 is Figure 28 overlooking the structure diagram；
Figure 30 is the structural representation of B-B direction in Figure 29；
Figure 31 is the structural representation of the retainer of the present invention；
Figure 32 is the overlooking the structure diagram of nail seat when latch is set on retainer；
Figure 33 is structural representation when retainer is made up of pressing plate, limiting plate and latch；
Figure 34 is the structural representation of the retainer and locking plug screw when extruded hole is provided with pressing plate；
Figure 35 be Figure 34 in C-C to structural representation；
Figure 36 is the overlooking the structure diagram when present invention carries pressing plate locking head；
Figure 37 be Figure 36 in D-D to structural representation；
Figure 38 is the overlooking the structure diagram of E-E in Figure 37；
Figure 39 is the structural representation of the pressing plate locking bed 33 of the present invention.
In figure：1st, hold-down bars, 2, screw body, 3, locking plug screw, 4, nail seat, 5, fracture armlet, 6, spanner sets of holes, 7, lock
Tight opening, 8, locking play frame, 9, polygonal locking plate, 10, locking slot, 11, arc pressuring plate, 12, insertion shoulder hole, 13, bayonet lock,
14th, pressing plate, 15, door shape holding rod, 16, guiding journal stirrup, 17, locking ratchet, 18, limiting plate, 19, rotate bulb, 20, spacing
Block, 21, through hole, 22, fastening port, 23, locking bed, 24, connecting plate, 25, locking stud, 26, hold-down bars through hole, 27, even
Fishplate bar through hole, 28, T-shaped card column, 29, latch, 30, buck plate, 31, free inclined-plane, 32, extruded hole, 33, pressing plate locking
Seat, 34, clamping screw, 35, connecting plate jack, 36, pressure hole, 37, bolt hole, 38, pilot hole.
Embodiment
The anti-loose pedicle nail bar system by two hold-down bars 1, enter bone screws, locking head, connecting plate 24 and locking screw
Plug 3 is formed；It is mutually corresponding respectively on every hold-down bars 1 that one or more locking heads are housed.
Locking head is made up of locking bed 23 and locking stud 25；The internal thread of locking bed 23 is provided with locking stud 25；Locking
The cross section of stud 25 is to be similar to "convex" shaped（Referring to Figure of description 3）.The purpose that locking stud 25 is arranged such is existed
In：Thick end portion by locking stud 25 is limited in locking bed 23, so as to avoid locking stud 25 from locking bed
The generation of case accident on 23.
Hold-down bars through hole 26 is provided with the locking bed 23 of the lower section of locking stud 25；Hold-down bars through hole 26 and locking screw
" ten " word cross-like is provided with connecting plate through hole 27 between post 25；Locking head is movably arranged on by hold-down bars through hole 26
On hold-down bars 1.When being arranged such, operation consent can assemble locking head on hold-down bars 1, solve existing locking head assembling
When, it need to will enter bone screws and after the completion of hold-down bars 1 assembles, locking head could be mounted in the problem of hold-down bars 1 in a manner of " hooking "
Generation, simplify installation step, solve the problems, such as that locking head comes off from hold-down bars 1.
In operation, after the completion of bone screws and the assembling of hold-down bars 1 are entered, it is only necessary to by each hold-down bars 1 by way of slip
Corresponding locking head is adjusted to relevant position, then, the connecting plate through hole 27 by connecting plate 24 through mutually corresponding locking head
Afterwards, locking stud 25 is tightened, each locking stud 25 is contradicted with connecting plate 24 and connects, and then connecting plate 24 and hold-down bars 1 are pressed
Tightly.After connecting plate assembles, each hold-down bars 1 is connected into an entirety by connecting plate, and then adds anti-loose pedicle nail
The overall stability of bar system（Referring to Figure of description 3）.
As a modification of the present invention, one or more locking heads are housed on a hold-down bars 1；On another hold-down bars
It is corresponding that pressing plate locking head is housed.Pressing plate locking head is made up of pressing plate locking bed 33, clamping screw 34 and connecting plate 24.
Pressing plate locking bed 33 is in hollow bending（Referring to Figure of description 39）And flexible, its flexible purpose
It is：When pressing plate locking bed 33 is pressurized, pressing plate locking bed 33 will be deformed so as to which the hold-down bars 1 of inside and connecting plate 24 be pressed
Tightly.
Pilot hole 38 is provided with the pressing plate locking bed 33 of the side of connecting plate 24.The purpose for setting pilot hole 38 is：With
It is easy to connecting plate 24 to be inserted into after being passed through from pilot hole 38 in connecting plate jack 35.The head end slip of connecting plate 24 extends to lock
In the connecting plate through hole 27 of tight head locking bed 23（Referring to Figure of description 37）.
Pressure hole 36 is provided with pressing plate locking bed 33；Press the one end in hole 36 curved；To insert hold-down bars 1（Referring to saying
Bright book accompanying drawing 37）.
Pressure hole 36 intersects with connecting plate jack 35 to be connected；The upper end of pressing plate locking head 33 is provided with bolt hole 37；
Bolt hole 37 is built with clamping screw 34；Screwed hole is provided with the pressing plate locking bed 33 of the lower section of bolt hole 37；Locking screw
Bolt 34 is threadedly coupled with screwed hole, and the head end of clamping screw 34 slightly expands, and the external diameter of its head end enlargement is more than its screwed hole
Internal diameter, the purpose that clamping screw 34 is so designed that is：Clamping screw 34 will not come off out of its screwed hole.
The tail end of connecting plate 24 expands, and the external diameter of the tail end enlargement of connecting plate 24 is less than or equal to the interior of pilot hole 38
Footpath, the external diameter of the tail end enlargement of connecting plate 24 are more than the internal diameter of connecting plate jack 35, the enlargement quilt of the tail end of connecting plate 24
Activity is limited in pressure hole 36.The purpose that connecting plate 24 is arranged such is：The tail end of connecting plate 24 is limited in pressing plate lock
The problem of inside of tight seat 33 prevents it from " coming off " occurs.
It is preoperative that locking head and the assembling of pressing plate locking head are first entered into bone screws and hold-down bars 1 has assembled on hold-down bars 1, in art
Cheng Hou, it is only necessary to corresponding locking head and pressing plate locking head on each hold-down bars 1 is adjusted to relevant position by way of slip, and
Afterwards, by the head end extraction section of pressing plate locking head upper junction plate 24, the connecting plate through hole for mutually corresponding to locking head is passed through
After 27, locking stud 25 is tightened, makes the head end of each locking stud 25 and connecting plate 24 in the internal locking of locking bed 23.Then will locking
Bolt 34 is tightened；When clamping screw 34 is tightened, compressing pressing plate locking bed 33 makes its deformation by the another of hold-down bars 1 and connecting plate 24
End locking.After connecting plate locking, connecting plate in the case where pressing plate locking head and locking head coordinate, by each hold-down bars 1 connect into one it is whole
Body, and then the overall stability of anti-loose pedicle nail bar system is added, whole anti-loose pedicle nail bar system can be prevented
Either component comes off（Referring to Figure of description 37）.
On the hold-down bars 1 of locking head both sides by lock plug screw 3 equipped with it is multiple enter bone screws（Referring to Figure of description 1,
2）；Enter bone screws to be made up of screw body 2 and nail seat 4, nail seat 4 is U-typed body；The lower end of nail seat 4 is provided with screw body 2.
The lower end of screw body 2 is provided with fastening port 22（Referring to Figure of description 4）.The purpose for setting fastening port 22 is：So that spiral shell
After nail body 2 is screwed into inside bone, fastening port 22 is even closer with bone contact, and is acted on certain anti-rotation, from
And reduce the risk of the loosening of screw body 2.
Screw body 2 has the both of which for being fixedly connected and being flexibly connected with nail seat 4.
When screw body 2 is movably arranged on the lower end of nail seat 4；The upper end of screw body 2, which is provided with, rotates bulb 19；Turn
The top of dynamic bulb 19 is provided with spanner sets of holes 6；After the bolt portion of screw body 2 passes through nail seat 4, bulb 19 and nail seat are rotated
4 are flexibly connected；The internal thread of nail seat 4 for rotating the top of bulb 19 is connected with limited block 20（Referring to Figure of description 6,7）.
Limited block 20 is " u "-shaped body, and through hole 21 is provided with limited block 20；Through hole 21 is with rotating the activity of bulb 19 even
Connect（Referring to Figure of description 8）.In surgical procedure, after spanner may pass through through hole 21, the spanner set for rotating bulb 19 is inserted into
In hole 6, then by way of rotating spanner, it is the purpose that can reach rigging screw body 2 to rotate screw body 2.
The upper end symmetry shape of nail seat 2 is connected with the armlet 5 that fractures；In surgical procedure, fixed by the guard ring armlet 5 that will fracture；And
Plug screw 3 will be locked afterwards, and screw-in fractures in armlet 5, after locking plug screw 3, which is screwed into nail seat 2, is fixed hold-down bars 1, removes
Guard ring, and after the armlet 5 that will fracture fractures, you can continue other operations.The purpose for setting the armlet 5 that fractures is：It is first, logical
Cross the armlet 5 that fractures to lengthen nail seat 2, the armlet 5 that makes to fracture in operation is extended in vitro, and micro-wound percutaneous nail is put so as to facilitate.Second,
Due to the U-typed body of nail seat 2；When locking plug screw 3 directly being screwed in into nail seat 2, the deformation of nail seat 2 may be caused, so as to cause to lock
Tight plug screw 3 releases the generation of problem；And after the armlet 5 that fractures is set, the armlet 5 that fractures is born during the locking precession of plug screw 3
Partial pressure, so as to reduce the risk of the deformation of nail seat 2, reduce the generation that locking plug screw 3 releases problem.
Locking plug screw 3 is threaded with by internal thread in nail seat 2 and the armlet 5 that fractures；Locking plug screw 3 supports with hold-down bars 1
Touch connection（Referring to Figure of description 1,4）.The top of locking plug screw 3 is provided with spanner sets of holes 6.
In order to solve to lock 3 caducous problem of plug screw；The present invention devises kinds of schemes, and scheme is as follows：
Scheme one：The thread upper end termination of locking plug screw 3 is provided with lock opening 7（Referring to Figure of description 10）.By locking screw
The purpose that plug 3 is arranged such is：It is screwed into place when locking plug screw 3, after hold-down bars 1 is compressed in nail seat 2, locks plug screw 3
Upper thread part corresponding with lock opening 7, by certain pressure that pressed to the internal thread groove of nail seat 2, and then increase thread and
The stiction of internal thread groove, so as to reduce the risk that locking plug screw 3 loosens.
Scheme two：The bottom of locking plug screw 3 is provided with locking and plays frame 8（Referring to Figure of description 11）.Locking is set to play frame 8
Purpose be：It is screwed into place when locking plug screw 3, after hold-down bars 1 is compressed in nail seat 2, when：Locking plays frame 8 will be by
Compressive strain is bonded conflict connection with hold-down bars 1, so as to increase the compression area of hold-down bars 1, reduces the wind of the loosening of hold-down bars 1
Danger.Second, locking, which plays the compression posterotransverse diameter of frame 8, will become big, and snap onto in the gap between nail seat 2 and hold-down bars 1, and then will lock
Tight plug screw 3 is locked（Referring to Figure of description 12）.
Locking, which plays frame 8, has certain elasticity, and when exiting it using strength turn locking plug screw 3, locking plays the meeting of frame 8
It is badly deformed, is moved with locking plug screw 3, the generation of problem can not be exited so as to avoid locking plug screw 3, but it is general
Under property Vibration Condition, but it is not easy to loosen.
Scheme three：The top of locking plug screw 3 is provided with polygonal locking plate 9（Referring to Figure of description 13,14）, polygonal lock
The hardness of piece 9 is less than the hardness of the internal thread of nail seat 4.The purpose for setting polygonal locking plate 9 is：When locking plug screw 3 screws in process
In, polygonal locking plate 9 will produce deformation after being pressurized, and its periphery will snap onto in the internal thread groove of nail seat 4 and/or snap onto nail seat 4
Open slot in, so as to which locking plug screw 3 further be locked, and then reduce the risk that locking plug screw 3 loosens, but and can makes
Back-out when being twisted with instrument strength is outer.
Scheme four：Lock and be provided with locking slot 10 in the middle part of the thread tooth body of plug screw 3, the upper end of locking slot 10 extends to spiral shell
There is a segment distance tooth upper end termination, the lower end of locking slot 10 from thread lower end termination（Referring to Figure of description 15）.Will locking
The purpose that plug screw 3 is arranged such is：First, under the guiding of the lower end of thread, locking plug screw 3, which can be smoothly screwed into, to fracture
In the internal thread groove of armlet 5, the generation of problem can not be screwed in by avoiding locking plug screw 3.Second, be screwed into place when locking plug screw 3,
After hold-down bars 1 is compressed in the nail seat 2, with 10 corresponding part of locking slot on thread, one will be pressed to the internal thread groove of nail seat 2
Fixed pressure, so as to increase the stiction of thread and internal thread groove, and then reduce the risk that locking plug screw 3 loosens.
Scheme five：Arc pressuring plate 11 is provided between locking plug screw 3 and hold-down bars 1；The cambered surface of the lower end of arc pressuring plate 11 with
The periphery cambered surface of hold-down bars 1 is corresponding, and the purpose being arranged such is：So that locking plug screw 3 will be solid by arc pressuring plate 11
When determining the compression of rod 1, cambered surface and the hold-down bars 1 of arc pressuring plate 11 are fitted and connected；And then the compression area of hold-down bars 1 is increased, reduce
The risk that hold-down bars 1 loosens.
Insertion shoulder hole 12 is provided with locking plug screw 3；The upper end of arc pressuring plate 11 is provided with T-shaped card column 28（Referring to saying
Bright book accompanying drawing 22）Or the bayonet lock 13 of symmetry shape（Referring to Figure of description 17）；Bayonet lock 13 or T-shaped card column 28 pass through insertion shoulder hole
The inside of locking plug screw 3 is extended to after 12 pore（Referring to Figure of description 16,17,18）.
Arc pressuring plate 11 is flexibly connected by T-shaped card column 28 all the time with locking plug screw 3, avoids arc pressuring plate 11 and locking screw
The generation that plug 3 comes off problem（Referring to Figure of description 22）.
After locking plug screw 3 is compressed hold-down bars 1 by arc pressuring plate 11 in nail seat 2, external force can be used by bayonet lock 13
Upper end bend, it can not be passed through insertion shoulder hole 12, and then will be together with locking plug screw 3 limits with arc pressuring plate 11（（Ginseng
See Figure of description 19）, when fetched, the upper end of bayonet lock 13 can be pressed from both sides in opposite directions, then arc pressure is taken out after back-outing locking plug screw 3
Plate 11.
One kind as bayonet lock 13 is improved, and the termination of bayonet lock 13 of the upper end of arc pressuring plate 11 is connected with each other（It is attached referring to specification
Figure 20）.After locking plug screw 3 is compressed hold-down bars 1 by arc pressuring plate 11 in nail seat 2, external force can be used by bayonet lock 13
Coupling part is bent, and it can not be passed through insertion shoulder hole 12, and then will be together with locking plug screw 3 limits with arc pressuring plate 11
（Referring to Figure of description 21）, when fetched, the upper end of bayonet lock 13 can be pressed from both sides in opposite directions, then arc is taken out after back-outing locking plug screw 3
Shape pressing plate 11.
One kind as arc pressuring plate 11 is improved, and respectively symmetrically shape is provided with latch 29 for the corner of arc pressuring plate 11, lock
Locking ratchet 17 is provided with tight plate 29；Locking teeth groove, locking ratchet 17 and lock are provided with corresponding to the both sides side of nail seat 4
Tight teeth groove interval clamping connection（Referring to Figure of description 23,24,25,26,27）.
After locking plug screw 3 is compressed hold-down bars 1 by arc pressuring plate 11 in nail seat 2, the locking spine on latch 29
Tooth 17 will be snapped onto in locking teeth groove, and such arc pressuring plate 11 can not retreat, and so as to which hold-down bars 1 be locked completely, be avoided solid
Determine rod 1 and/or lock the generation of the loose or dislocation problem of plug screw 3；When needing to exit locking plug screw 3 and arc pressuring plate 11, first use
Instrument, which breaks latch 29 into two with one's hands, makes locking ratchet 17 disengage card and locking teeth groove, then locking plug screw 3 is screwed out, and then takes out
Arc pressuring plate 11.
Scheme six：Retainer is provided with nail seat 4；Retainer is made up of pressing plate 14 and door shape holding rod 15；Pressing plate 14
Bottom is provided with concave arc curved surface；The radian of concave arc curved surface is consistent with the periphery radian of hold-down bars 1.The purpose being arranged such is：
During so that locking plug screw 3 being compressed hold-down bars 1 by pressing plate 14, cambered surface and the hold-down bars 1 of arc pressuring plate 11 are fitted and connected；And then
The compression area of hold-down bars 1 is increased, reduces the risk of the loosening of hold-down bars 1.
The both sides of pressing plate 14 are respectively arranged with guiding journal stirrup 16；Symmetry shape is provided with a shape holding rod between guiding journal stirrup 16
15；Door shape holding rod 15 is flexible；Guide the width of journal stirrup 16 consistent with the spacing between the armlet 5 that fractures, guide journal stirrup 16
With fractureing armlet 5 and nail seat 4 is slidably connected.
Height inside door shape holding rod 15 is consistent with locking plug screw 3, and the purpose being arranged such is：So as to locked in work
Tight plug screw 3 is movably arranged on inside the door shape holding rod 15 of retainer；Reduce the risk that locking plug screw 3 departs from retainer.
Locking ratchet 17 is provided with the outer face of door shape holding rod 15（Referring to Figure of description 28,29,30,31）.Nail
The U-typed medial shaft of seat 4, which is faced directly, is provided with locking teeth groove, and locking teeth groove and locking ratchet 17 are mutually corresponding, and interval is caught in
Connection（Referring to Figure of description 28）.
One kind as retainer is improved, and retainer is made up of pressing plate 14, limiting plate 18 and latch 29；The bottom of pressing plate 14
End is provided with concave arc curved surface；The both sides of pressing plate 14 are respectively arranged with guiding journal stirrup 16；Pass through buck plate 30 on each guiding journal stirrup 16
Equipped with limiting plate 18；Each guiding journal stirrup 16 both sides are provided with latch 29, and locking ratchet 17 is provided with latch 29；Nail seat 4
Both sides side corresponding to be provided with locking teeth groove, locking ratchet 17 is connected with locking teeth groove interval clamping（It is attached referring to specification
Figure 32,33）.
Locking plug screw 3 is movably arranged on the lower section of retainer limiting plate 18（Referring to Figure of description 34）.
One kind as pressing plate 14 is improved, and extruded hole 32 is provided with pressing plate 14；Locking plug screw 3 is graded axial type；Locking
The thick end portion of plug screw 3 can not pass through extruded hole 32, and locking plug screw 3 is arranged such into purpose is：Prevent lock plug screw 3 from
Spilt in extruded hole 32.
The taper end of locking plug screw 32 is extended to inside extruded hole 32（Referring to Figure of description 34,35）.Extruded hole 32 is set
Purpose be：Convenient locking plug screw 32 directly presses after passing through extruded hole 32 to hold-down bars 1.
After locking plug screw 3 is compressed hold-down bars 1 by retainer in nail seat 2, the locking ratchet 17 on latch 29
It will snap onto in locking teeth groove, such retainer can not retreat, and so as to which hold-down bars 1 be locked completely, avoid hold-down bars 1 and loosen
The generation of problem；When needing to exit locking plug screw 3 and during arc pressuring plate 11, first break into two with one's hands latch 29 make locking ratchet 17 will block with
Locking teeth groove disengages, and then turn locking plug screw 3, locking plug screw 3 can drive retainer to exit together when exiting.
Latch 29 is flexible, is provided with the inside of its upper end and frees inclined-plane 31.The purpose that latch 29 is arranged such
It is：So that freeing between inclined-plane 31 and nail seat 4 for latch 29 has certain interval；And then conveniently stretch into special instrument from this
Gap, which enters, breaks latch 29 into two with one's hands.
The purpose for setting retainer is：After hold-down bars 1 is compressed by retainer due to locking plug screw 3, retainer exists
In the presence of locking ratchet 17, retainer can not retreat, and retainer is so that hold-down bars 1 be locked completely；And due to locking screw
Plug 3 is limited in inside retainer all the time, therefore it is also not in the problem of releasing to lock plug screw 3.
The anti-loose pedicle nail bar system, it is rational in infrastructure, it is ingenious in design；Solve existing pedicle nail bar system to have
The part such as locking plug screw exist certain the problem of releasing risk and inconvenient locking head assembling, meet patient's safety for a long time
The needs used.
Claims (10)
1. a kind of anti-loose pedicle nail bar system, it is by two hold-down bars（1）, enter bone screws, locking head, connecting plate（24）With
Lock plug screw（3）Form；Every hold-down bars（1）Upper difference is mutually corresponding to be equipped with one or more locking heads；Corresponding locking
Pass through connecting plate between head（24）It is connected with each other；The hold-down bars of locking head both sides（1）On by locking plug screw（3）Equipped with it is multiple enter
Bone screws；It is characterized in that：Described locking head is by locking bed（23）With locking stud（25）Form；Locking bed（23）Internal thread
Locking stud is installed（25）；Lock stud（25）The locking bed of lower section（23）Inside it is provided with hold-down bars through hole（26）；It is fixed
Rod through hole（26）With locking stud（25）Between " ten " word cross-like is provided with connecting plate through hole（27）；Locking head passes through
Hold-down bars through hole（26）It is movably arranged on hold-down bars（1）On, connecting plate（24）Connecting plate through mutual corresponding locking head passes through
Through hole（27）Locking head is connected with each other afterwards；Each locking stud（25）With connecting plate（24）Contradict connection；Described locking stud
（25）Cross section to be similar to "convex" shaped.
A kind of 2. anti-loose pedicle nail bar system according to claim 1, it is characterised in that：It is described enter bone screws by
Screw body（2）And nail seat（4）Form, nail seat（4）For U-typed body；Nail seat（4）Lower end be provided with screw body（2）；Nail seat
（2）Upper end symmetry shape is connected with the armlet that fractures（5）；Nail seat（2）With the armlet that fractures（5）It is interior that locking is threaded with by internal thread
Plug screw（3）；Lock plug screw（3）With hold-down bars（1）Contradict connection.
A kind of 3. anti-loose pedicle nail bar system according to claim 2, it is characterised in that：Described locking plug screw
（3）Top is provided with spanner sets of holes（6）；Lock plug screw（3）Thread upper end termination be provided with lock opening（7）；Described lock
Tight plug screw（3）Bottom be provided with locking play frame（8）；Described locking plug screw（3）Top be provided with polygonal locking plate（9）,
Polygonal locking plate（9）Hardness be less than nail seat（4）The hardness of internal thread；Described locking plug screw（3）Thread tooth body middle part
It is provided with locking slot（10）, locking slot（10）Upper end extend to thread upper end termination, locking slot（10）Lower end under thread
There is a segment distance end termination.
A kind of 4. anti-loose pedicle nail bar system according to claim 2, it is characterised in that：Described locking plug screw
（3）With hold-down bars（1）Between be provided with arc pressuring plate（11）；Lock plug screw（3）Inside it is provided with insertion shoulder hole（12）；Arc pressure
Plate（11）Upper end be provided with T-shaped card column（28）Or the bayonet lock of symmetry shape（13）；Bayonet lock（13）Or T-shaped card column（28）Through insertion
Shoulder hole（12）Pore after extend to locking plug screw（3）Inside.
A kind of 5. anti-loose pedicle nail bar system according to claim 4, it is characterised in that：Described arc pressuring plate
（11）The bayonet lock of upper end（13）Termination be connected with each other；Described arc pressuring plate（11）Respectively symmetrically shape is provided with locking for corner
Plate（29）, latch（29）On be provided with locking ratchet（17）；Nail seat（4）Both sides side corresponding to be provided with locking teeth groove,
Lock ratchet（17）It is connected with locking teeth groove interval clamping.
A kind of 6. anti-loose pedicle nail bar system according to claim 2, it is characterised in that：Described nail seat（4）It is interior
It is provided with retainer；Retainer is by pressing plate（14）With door shape holding rod（15）Form；Pressing plate（14）Bottom be provided with concave arc song
Face；Pressing plate（14）Both sides be respectively arranged with guiding journal stirrup（16）；Guide journal stirrup（16）Between symmetry shape be provided with shape and keep
Bar（15）；Door shape holding rod（15）Outer face on be provided with locking ratchet（17）；Door shape holding rod（15）It is flexible；Guiding
Journal stirrup（16）Width and fracture armlet（5）Between spacing it is consistent, guide journal stirrup（16）With the armlet that fractures（5）And nail seat（4）
It is slidably connected；Lock plug screw（3）It is movably arranged on the door shape holding rod of retainer（15）Inside, nail seat（4）U-typed on the inside of
Locking teeth groove, locking teeth groove and locking ratchet are provided with vertical plane（17）It is mutually corresponding, and interval Snap joint.
A kind of 7. anti-loose pedicle nail bar system according to claim 6, it is characterised in that：Described retainer is by pressing
Plate（14）, limiting plate（18）And latch（29）Form；Pressing plate（14）Bottom be provided with concave arc curved surface；Pressing plate（14）Both sides
It is respectively arranged with guiding journal stirrup（16）；Each guiding journal stirrup（16）On pass through buck plate（30）Equipped with limiting plate（18）；Each guiding branch
Ear（16）Both sides are provided with latch（29）, latch（29）On be provided with locking ratchet（17）；Nail seat（4）Both sides side pair
That answers is provided with locking teeth groove, locks ratchet（17）It is connected with locking teeth groove interval clamping；Latch（29）It is flexible, thereon
End inner side, which is provided with, frees inclined-plane（31）.
A kind of 8. anti-loose pedicle nail bar system according to claim 7, it is characterised in that：Described locking plug screw
（3）It is movably arranged on retainer limiting plate（18）Lower section, lock plug screw（3）The pressing plate of lower section（14）On be provided with extruded hole
（32）；Lock plug screw（3）For graded axial type；Lock plug screw（32）Taper end extend to extruded hole（32）It is internal.
A kind of 9. anti-loose pedicle nail bar system according to claim 1, it is characterised in that：Described screw body
（2）With nail seat（4）It is fixedly connected, screw body（2）Lower end be provided with fastening port（22）；Described screw body（2）It is upper
End is provided with rotation bulb（19）；Rotate bulb（19）Top be provided with spanner sets of holes（6）；Screw body（2）Screw division
Divide through nail seat（4）Afterwards, bulb is rotated（19）With nail seat（4）It is flexibly connected；Rotate bulb（19）The nail seat of top（4）Internal thread
It is connected with limited block（20）；Limited block（20）For " u "-shaped body, limited block（20）Inside it is provided with through hole（21）；Through hole（21）
With rotating bulb（19）It is flexibly connected.
A kind of 10. anti-loose pedicle nail bar system according to claim 1, it is characterised in that：A described fixation
Rod（1）It is upper that one or more locking heads are housed；Pressing plate locking head is housed corresponding on another hold-down bars；Pressing plate locking head and lock
Pass through connecting plate between tight head（24）It is connected with each other；Pressing plate locking head is by pressing plate locking bed（33）, clamping screw（34）And connection
Plate（24）Form；Pressing plate locking bed（33）In hollow bending and flexible；Pressing plate locking bed（33）One end be provided with dress
Distribution（38）, the other end is provided with connecting plate jack（35）；Pressing plate locking bed（33）Middle part be provided with pressure hole（36）；Press hole
（36）With connecting plate jack（35）Intersect connection；Pressing plate locking bed（33）Inside it is movably installed with connecting plate（24）；Connecting plate
（24）Head end extend to connecting plate jack（35）Outer end；Connecting plate（24）Tail end expand, connecting plate（24）Tail end expands
Partial external diameter is less than or equal to pilot hole（38）Internal diameter, connecting plate（24）The external diameter of tail end enlargement is inserted more than connecting plate
Hole（35）Internal diameter；Connecting plate（24）Tail end enlargement activity is limited in pressure hole（36）It is interior；Pressing plate locking head（33）Upper end
It is provided with bolt hole（37）；Bolt hole（37）Built with clamping screw（34）；Bolt hole（37）The pressing plate locking of lower section
Seat（33）On be provided with screwed hole；Clamping screw（34）It is threadedly coupled with screwed hole, clamping screw（34）Head end slightly expand, lock
Tight bolt（34）The external diameter of head end enlargement is more than locking bed（33）The internal diameter of upper screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044874.7A CN107693098B (en) | 2017-10-31 | 2017-10-31 | Anti-loosening pedicle screw rod system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044874.7A CN107693098B (en) | 2017-10-31 | 2017-10-31 | Anti-loosening pedicle screw rod system |
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| CN107693098A true CN107693098A (en) | 2018-02-16 |
| CN107693098B CN107693098B (en) | 2024-02-06 |
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| CN201711044874.7A Active CN107693098B (en) | 2017-10-31 | 2017-10-31 | Anti-loosening pedicle screw rod system |
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|---|---|
| CN107693098B (en) | 2024-02-06 |
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Address after: Wuhan Integrated Traditional Chinese and Western Medicine Orthopedic Hospital, No. 279 Luoyu Road, Hongshan District, Wuhan City, Hubei Province, 430079 Applicant after: Li Zhaowen Address before: No. 28 Chanling Avenue, Douhudi Town, Gong'an County, Jingzhou City, Hubei Province, 434300 (No. 702, Unit 18, Education Garden) Applicant before: Li Zhaowen |
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