CN109549696A - A kind of adjustable double flute internal fixation device of spine and bone screws - Google Patents
A kind of adjustable double flute internal fixation device of spine and bone screws Download PDFInfo
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- CN109549696A CN109549696A CN201710892210.XA CN201710892210A CN109549696A CN 109549696 A CN109549696 A CN 109549696A CN 201710892210 A CN201710892210 A CN 201710892210A CN 109549696 A CN109549696 A CN 109549696A
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- base
- pitman
- lag
- elongated slot
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 27
- 239000011324 bead Substances 0.000 claims description 18
- 230000014759 maintenance of location Effects 0.000 claims description 18
- 238000010586 diagram Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010058907 Spinal deformity Diseases 0.000 description 1
- 208000020307 Spinal disease Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 206010039722 scoliosis Diseases 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 208000020431 spinal cord injury Diseases 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- 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
-
- 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
- A61B17/7062—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
- A61B17/7074—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
- 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
- A61B17/8615—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the central region of the screw head
-
- 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
- A61B17/8625—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, 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
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
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- Heart & Thoracic Surgery (AREA)
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- Surgical Instruments (AREA)
Abstract
The present invention provides a kind of adjustable double flute internal fixation device of spine, including first base, second base and pitman, first base and second base have U-lag from the top down, the inner wall of the U-lag is equipped with internal screw thread, the pitman is horizontally disposed, the second base is provided with elongated slot in the horizontal direction, one end of the pitman is threaded through in first base, the other end is threaded through in the elongated slot of second base, the pitman can be swung in the elongated slot, the first base and second base can relatively rotate on pitman, which reduce because following closely stick stress concentration or scratch caused by curved rod, guarantee the service life of nail stick.The present invention also provides a kind of bone screws with the inner fixing device, first base and/or second base are equipped with shank of screw；Its is easy to use, flexible.
Description
Technical field
The present invention relates to internal fixation of spine medical instrument more particularly to a kind of adjustable double flute internal fixation device of spine and
Bone screws.
Background technique
Internal fixation of spine technology is the widely used surgical technic of current spinal disease, early stage internal fixation operation be all made of compared with
For simple mode, for example fix with filamentary silver the cervical vertebra fusion of bone etc. of cervical vertebra.The technology development of internal fixation of spine is mainly to be
Meet the needs of backbone correcting, for example the multistage of the correction of premenstrual road or way of escape scoliosis deformity, deformity of spine resets
Deng.One leap of internal fixation of spine technology is the appearance of pedicle screw technique, at present pedicle types screw fixation technique
Have become the core technology of internal fixation of spine technology.
Existing frequently-used internal fixation device of spine includes various pedicle screws, matches dowel stick and some other assistor
Tool uses.Currently, what is used includes single slot pedicle screw (referred to as single slot nail) and double flute pedicle screw (abbreviation double flute
Nail).
The list slot nail is usually used in the operation such as backbone retrogression pathological changes, slippage, tumour, fracture.The double flute nail is suitble to cut
The Sacroiliac compound fixation of osseous surgery, waist and revision procedure.When needing osteotomy, it can be ensured that osteotomy operating space is stablized, effectively
Spinal cord injury risk is reduced, realizes orthopedic effect.Periodically, the nail stick in a slot realizes waist sacrum bone fixation to composite solid, another
Nail stick in slot realizes that waist ilium is fixed.
Above-mentioned double flute nail can providing great convenience property during operation, but there are some insurmountable problems,
Such as when two nail sticks being mounted on double flute nailing on, nail stick has to parallel fixation, this adds increased the number of folding stick curved rod and
Possibility.In the field of business well known, in order to play rectification effect, the rigidity for following closely stick is larger, and the actual conditions of different patients are different,
Interim curved rod expends the time, is easy to appear repeatedly the case where curved rod is still unable to satisfy requirement, this will lead to nail stick and answers
Power is concentrated or scratch, service life receive very big influence, is easy failure.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of curved rod number for reducing nail stick, guarantee its service life
Adjustable double flute internal fixation device of spine, to overcome the defect in the prior art.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of adjustable double flute internal fixation of spine
Device, including first base, second base and pitman, first base and second base have U-lag from the top down, institute
The inner wall for stating U-lag is equipped with internal screw thread, and the pitman is horizontally disposed, and the second base is provided with length in the horizontal direction
One end of slot, the pitman is threaded through in first base, and the other end is threaded through in the elongated slot of second base, the pitman energy
Enough to swing in the elongated slot, the first base and second base can relatively rotate on pitman.
Preferably, one end fixation of the pitman is threaded through in first base, and the other end is rotary to be threaded through the
On two pedestals.
Further, the U-lag in second base is connected with the elongated slot, is equipped in the U-lag of the second base
Compact heap, the bottom surface of the compact heap are equipped with retention bead, are provided with annular groove on the pitman, the pitman passes through length
Slot penetrates the slot bottom of the U-lag, and the retention bead on the compact heap is matched with the annular groove on the pitman.
Preferably, one end of the pitman is rotatably threaded through in first base, and the other end is rotatably threaded through
In second base.
Further, the U-lag in second base is connected with the elongated slot, the U of the first base and second base
The identical compact heap of structure is respectively equipped in shape slot, the bottom surface of the compact heap is equipped with retention bead, the both ends of the pitman
Annular groove is had, one end of the pitman penetrates the slot bottom of the U-lag of first base, and the other end is penetrated by elongated slot
The slot bottom of the U-lag of second base, the retention bead on the compact heap are matched with the annular groove on pitman.
Preferably, in the two side walls of the U-lag of the first base and/or the two side walls of the U-lag of second base
On be provided with fracture.
The present invention also provides it is a kind of it is easy to use, flexibly have the bone screws of the inner fixing device, particular technique side
Case are as follows: first base 1 and/or second base are equipped with shank of screw.
Preferably, the first base and/or second base are provided with ball-and-socket, and one end of the shank of screw is equipped with bulb, institute
Bulb is stated to match with ball-and-socket.
Preferably, the first base and/or second base are provided with threaded hole, and the shank of screw is matched with threaded hole screw thread
It closes.
As described above, a kind of adjustable double flute internal fixation device of spine of the present invention and bone screws, have below beneficial to effect
Fruit:
Two pedestals of inner fixing device of the present invention can relatively rotate, opposite swing is played according to nail stick adjusting position
Transition guiding role, and then the curved rod number to nail stick is reduced, stick stress is followed closely caused by also just reducing because of curved rod to be concentrated or draw
Trace guarantees the service life of nail stick, avoids realizing failure too early.In addition, because curved rod can be effectively reduced in actual use
Number, it is possible to effectively improve procedure efficiency, bring great convenience for the surgical procedure of doctor, effectively reduce the labour of doctor
Intensity and workload.
Bone screws of the present invention with inner fixing device are easy to use, flexible, good working effect.
Detailed description of the invention
Fig. 1 is the schematic diagram of inner fixing device of the present invention.
Fig. 2 is the first structure broken away view of inner fixing device of the present invention.
Fig. 3 is that the vertical view of first base and second base swings schematic diagram in the present invention.
Fig. 4 is the main view of second base in the present invention.
Fig. 5 is cross-sectional view at A-A in Fig. 4.
Fig. 6 is the structure chart of compact heap in the present invention.
Fig. 7 is the principle schematic diagram of compact heap and pitman in the present invention.
Fig. 8 is second of structural schematic diagram of inner fixing device of the present invention.
Fig. 9 is the broken away view of Fig. 8.
Figure 10 is the first structural schematic diagram that inner fixing device of the present invention has fracture.
Figure 11 is second of structural schematic diagram that inner fixing device of the present invention has fracture.
Figure 12 is the first structural schematic diagram of bone screws of the present invention.
Figure 13 is the cross-sectional view of Figure 12.
Figure 14 is second of structural schematic diagram of bone screws of the present invention.
Figure 15 is the third structural schematic diagram of bone screws of the present invention.
Figure 16 uses schematic diagram for inner fixing device of the present invention.
Figure 17 is that bone screws of the present invention with inner fixing device use schematic diagram.
In figure:
1 first base, 2 second base
3 pitman, 4 U-lag
5 compact heap, 31 annular groove
51 retention bead, 21 elongated slot
52 inner panel, 53 outside plate
54 gap, 6 shank of screw
7 nail 8 pressure heads of stick
61 bulb, 11 through-hole
The big oral area of 10 vertebra 211
212 small 41 fractures of oral area
Specific embodiment
Structure depicted in Figure of description, ratio, size etc., only to cooperate the revealed content of specification, with
Understand for those skilled in the art and read, be not intended to limit the invention enforceable qualifications, therefore does not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated not influencing the present invention
Under effect and the purpose that can reach, it should all fall in the range of disclosed technology contents can cover.Meanwhile this
Cited such as "upper", "lower", "front", "rear", " centre " term in specification are merely convenient to being illustrated for narration, rather than
To limit the scope of the invention, relativeness is altered or modified, under the content of no substantial changes in technology, when also
It is considered as the enforceable scope of the present invention.
In spinal surgery, some positions are inconvenient to be implanted into bone screws, but need to realize position by nail stick again
Correction or transition, this inner fixing device are exactly to apply in these positions, can be provided for operation on vertebra conveniently.
As Figure 1-Figure 5, the present invention is a kind of adjustable double flute internal fixation device of spine, including first base 1, second
Pedestal 2 and pitman 3, first base 1 and second base 2 have U-lag 4 from the top down, and the inner wall of the U-lag 4 is set
There is internal screw thread, the pitman 3 is horizontally disposed.The second base 2 is provided with elongated slot 21, the connection in the horizontal direction
One end of stick 3 is threaded through in first base 1, and the other end is threaded through in the elongated slot 21 of second base 2, and the pitman 3 can be
It is swung in the elongated slot 21, i.e., first base 1 and second base 2 opposite in the horizontal direction as shown in Figure 3 can be swung；Described
One pedestal 1 and second base 2 can also relatively rotate on pitman 3.
Structural principle of the invention is: because first base 1 and second base 2 form whole knot by the connection of pitman 3
Structure, in use, medical nail stick is individually positioned in the U-lag 4 of two pedestals, then using clamping cap with it is interior on U-lag 4
It is threadedly engaged and nail stick is pressed on respectively in U-lag 4.Because two pedestals can relatively rotate and it is opposite swing, and then can be with
Position is neatly adjusted with nail stick, nail stick itself will not repeatedly be bent, and reduced stress collection and neutralized scratch, so that the failure of nail stick
Chance is reduced, and guarantees service life.
In conjunction with Fig. 2-Fig. 5, the left and right directions in 21 width of elongated slot, that is, Fig. 4 in the present invention in second base 2, elongated slot 21
For specific structure as shown in figure 5, both ends part is the biggish big oral area 211 of width, middle section is the lesser small oral area of width
212, position of the pitman 3 when swinging can effectively be limited by intermediate small oral area 212, be equivalent to intermediate small oral area
It is swung centered on 212, guarantees the stability that first base 1 and second base 2 use when swinging.
Embodiment one:
The first structure of the invention is that one end fixation of pitman 3 is threaded through in first base 1, and the other end can rotate
Be threaded through in second base 2, thus realize two pedestals relative rotation.Specific implementation structure is: with reference to Fig. 2-Fig. 7, institute
It states U-lag 4 to be connected with the elongated slot 21, compact heap 5, the bottom of the compact heap 5 is equipped in the U-lag 4 of the second base 2
Face is equipped with retention bead 51, and annular groove 31 is provided on the pitman 3, and the pitman 3 penetrates the U-shaped by elongated slot 21
The slot bottom of slot 4, the retention bead 51 on the compact heap 5 are matched with the annular groove 31 on the pitman 3.Using
When, when in the elongated slot 21 of the end of pitman 3 insertion second base 2, by U-lag 4 it can be seen that the annular of pitman 3 is recessed
Slot 31 when being put into compact heap 5 in U-lag 4, can allow retention bead 51 to enter in the annular groove 31 and be limited,
And then realize that pitman 3 can be pressed against the rotation of block 5, that is, second base 2 can be freely rotated around pitman 3, thus
Realize the relative rotation of first base 1 and second base 2.Energy after retention bead 51 and annular groove 31 in the present embodiment cooperate
Enough position of the limitation second base 2 on pitman 3, the distance between first base 1 and second base 2 be it is determining, that is, exist
When production and processing, the spacing of two pedestals can be determined according to the position of annular groove 31, obtains the product of multiple models.This
Outside, in order to realize that pitman 3 and the opposite of second base 2 are swung, there can be following methods realization: (1) compact heap 5
It can independently be rotated in the horizontal plane relative to second base 2, compact heap 5 and pitman 3 rotate synchronously when pitman 3 is swung；(2)
The compact heap 5 is elastic material, and when pitman 3 rotates, compact heap 5 generates elastic deformation and provides for the swing of pitman 3
Condition.In the present embodiment, as shown in fig. 6, the compact heap 5 is inverted U-shaped compatible with 3 shape of pitman, two
End is respectively equipped with inner panel 52 and outside plate 53, has gap 54 between inner panel 52 and outside plate 53, inner panel 52 can generate elastic deformation, institute
Retention bead 51 is stated to be arranged on inner panel 52.The shape of the inner panel 52 towards 3 side of pitman is mutually fitted with 3 outer wall of pitman
Match, when compact heap 5 to be pressed on pitman 3, two inner panels 52 are first to inwardly receipts are extended out again, in order to effectively stick on connection
On stick 3, the gap 54 provides deformation space with interior receipts for extending out for inner panel 52.When pitman 3 is swung with respect to second base 2
When, compact heap 5 is motionless relative to pitman 3, and compact heap 5 is rotated centered on small oral area 212 with the swing of pitman 3.
Embodiment two:
In conjunction with Fig. 7-Fig. 9, second of structure of the invention is that one end of the pitman 3 is rotatably threaded through the first bottom
Seat 1 on, the other end is rotatably threaded through in second base 2, i.e., first base 1 and second base 2 rotatably with connection
Stick 3 cooperates.It is identical as the principle of the first above-mentioned structure that structure is embodied, it may be assumed that U-lag 4 and the length in second base 2
Slot 21 is connected, and the identical compact heap 5 of structure, the pressure are respectively equipped in the first base 1 and the U-lag 4 of second base 2
The bottom surface of tight block 5 is equipped with retention bead 51, and the both ends of the pitman 3 have an annular groove 31, and the one of the pitman 3
End penetrates the slot bottom of the U-lag 4 of first base 1, and the other end penetrates the slot bottom of the U-lag 4 of second base 2, institute by elongated slot 21
The retention bead 51 stated on compact heap 5 is matched with the annular groove 31 on pitman 3.I.e. when in use, the both ends of pitman 3
It is inserted into first base 1 and second base 2 respectively, by two U-lags 4 it can be seen that the annular groove 31, described in two
When compact heap 5 is respectively put into U-lag 4, the retention bead 51 on two compact heaps 5 is had respectively entered in an annular groove 31
Limited, pitman 3 can with respect to two pedestals be freely rotated, to realize that the opposite of first base 1 and second base 2 turns
It is dynamic.The position between two pedestals in the present embodiment is also to be limited by retention bead 51 and annular groove 31, according to two
The difference of distance, can also produce the product of multiple models between a annular groove 31.Pitman 3 and second in the present embodiment
The swing fit structure of pedestal 2 is the same as example 1.
As shown in Figure 10 and Figure 11, in the two side walls of the U-lag 4 of heretofore described first base 1 and/or the second bottom
Fracture 41 is provided in the two side walls of the U-lag 4 of seat 2.Fracture 41, which can according to need, to fracture, and then meets different
The operation of situation needs.A kind of specific structure is as shown in Figure 10, and wherein the height of first base 1 is greater than the height of second base 2,
Fracture 41 is opened up in 4 two side walls of U-lag of first base 1；Do not fracture the fracture 41 when, the U-shaped in first base 1
Setting range of the nail stick in U-lag 4 can be improved in slot 4；The fracture 41 that fractures can then allow first base 1 and second base
2 height is identical.Another specific structure is as shown in figure 11, and wherein first base 1 and 2 height of second base are identical, and point
It is identical as such as Figure 10 that fracture 41, structural principle and application method are not opened up in the two side walls of U-lag 4.
In conjunction with Fig. 1, Figure 12 and Figure 13, invention additionally discloses a kind of bone screws with the inner fixing device, the first bottoms
Seat 1 and/or second base 2 are equipped with shank of screw 6.It can be equipped with a shank of screw respectively in first base 1 and second base 2
6, it is also possible to one of first base 1 and second base 2 setting shank of screw 6.
In conjunction with Figure 12 and such as Figure 13, a kind of specific structure of this bone screws is: the first base 1 is in the U-lag 4
Slot bottom is provided with the through-hole 11 being connected to bottom surface, is arranged ball-and-socket in through-hole 11, and one end of shank of screw 6 is arranged bulb 61, shank of screw 6 from
U-lag 4 penetrates the through-hole 11, is installed in place when bulb 61 is worked good with ball-and-socket, and pressure head 8 is then put into U-lag 4, institute
Stating pressure head 8 also is inverted U-shaped, and there are two compressed part, compressed part can be pressed against the position that bulb is limited on bulb 61 for its underpart
It sets, i.e. first base 1 and the universal cooperation of shank of screw 6.
Another specific structure of this bone screws is: the bottom of the first base 1 and/or second base 2 is provided with screw thread
Hole, the shank of screw 6 are threadedly engaged with threaded hole, i.e., relatively fixed cooperation.In addition, shank of screw 6 can be welded on first base 1
And/or in second base 2.
Figure 14 and Figure 15 is respectively two kinds of bone screws structural schematic diagrams for having fracture 41.
As shown in figure 16, schematic diagram is used for inner fixing device of the present invention, in conjunction with Fig. 1-Fig. 7, Figure 16, first base 1
Stick 7 is followed closely with being separately installed in second base 2, two nail sticks 7 also cooperate with other bone screws simultaneously, first base 1 and second
Pedestal 2 and vertebra 10 do not have connection relationship, vacant state are in, because first base 1 and second base 2 are can to relatively rotate
It with opposite swing, therefore can realize that two nail sticks 7 are oriented in the case where not bending nail stick 7, play transition guiding role.
In spinal surgery, for the position of bone screws can be implanted into, then the interior fixation is had using the present invention
The bone screws of device, as shown in figure 17, wherein second base 2 is equipped with screw 6, in conjunction with Fig. 1-Fig. 7, Figure 12, Figure 17, the second bottom
Shank of screw 6 on seat 2 screws in vertebra 10, realizes whole positioning, nail stick 7 is separately installed in first base 1 and second base 2,
Two nail sticks 7 also cooperate with other bone screws simultaneously, and bone screws of the invention are while realizing positioning, to two nail sticks
7 play transition guiding role.
In conclusion a kind of adjustable double flute internal fixation device of spine of the invention and bone screws, are able to solve nail stick
The problem that curved rod is excessive, operation is time-consuming and laborious, can effectively improve procedure efficiency.So the present invention effectively overcomes the prior art
In some practical problems to there is very high utility value and using meaning.
The principle of the present invention and its effect is only illustrated in above embodiment, and is not intended to limit the present invention.This hair
It is bright to be improved under the premise of without prejudice to overall thought there are many more aspect, it all can be for those skilled in the art
Without prejudice under spirit and scope of the invention, can carry out modifications and changes to above-described embodiment.Therefore, technical field such as
Middle all equivalent modifications for being completed without departing from the spirit and technical ideas disclosed in the present invention of tool usually intellectual or
Change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of adjustable double flute internal fixation device of spine, it is characterised in that: including first base (1), second base (2) and connect
It takes over the baton (3), first base (1) and second base (2) have U-lag (4) from the top down, and the inner wall of the U-lag (4) is set
There is internal screw thread, the pitman (3) is horizontally disposed, and the second base (2) is provided with elongated slot (21), institute in the horizontal direction
The one end for stating pitman (3) is threaded through on first base (1), and the other end is threaded through in the elongated slot (21) of second base (2), described
Pitman (3) can be swung in the elongated slot (21), and the first base (1) and second base (2) can be in pitman (3)
Upper relative rotation.
2. a kind of adjustable double flute internal fixation device of spine according to claim 1, it is characterised in that: the pitman
(3) one end fixation is threaded through on first base (1), and the other end is rotary to be threaded through on second base (2).
3. a kind of adjustable double flute internal fixation device of spine according to claim 2, it is characterised in that: second base (2)
On U-lag (4) be connected with the elongated slot (21), in the U-lag (4) of the second base (2) be equipped with compact heap (5), institute
The bottom surface for stating compact heap (5) is equipped with retention bead (51), is provided with annular groove (31), the pitman on the pitman (3)
(3) slot bottom of the U-lag (4), retention bead (51) and the connection on the compact heap (5) are penetrated by elongated slot (21)
Annular groove (31) on stick (3) matches.
4. a kind of adjustable double flute internal fixation device of spine according to claim 1, it is characterised in that: the pitman
(3) one end is rotatably threaded through on first base (1), and the other end is rotatably threaded through on second base (2).
5. a kind of adjustable double flute internal fixation device of spine according to claim 4, it is characterised in that: second base (2)
On U-lag (4) be connected with the elongated slot (21), in the U-lag (4) of the first base (1) and second base (2) respectively
Equipped with the identical compact heap of structure (5), the bottom surface of the compact heap (5) is equipped with retention bead (51), and the two of the pitman (3)
End has annular groove (31), and one end of the pitman (3) penetrates the slot bottom of the U-lag (4) of first base (1), separately
One end penetrates the slot bottom of the U-lag (4) of second base (2), the retention bead (51) on the compact heap (5) by elongated slot (21)
It is matched with the annular groove (31) on pitman (3).
6. a kind of adjustable double flute internal fixation device of spine according to claim 1, it is characterised in that: the first base
(1) fracture is provided in the two side walls of U-lag (4) and/or in the two side walls of the U-lag (4) of second base (2)
(41)。
7. a kind of bone screws, it is characterised in that: have inner fixing device described in claim 1, first base (1) and/or the
Two pedestals (2) are equipped with shank of screw (6).
8. bone screws according to claim 7, it is characterised in that: the first base (1) and/or second base (2) are opened
There is ball-and-socket, one end of the shank of screw (6) is equipped with bulb, and the bulb is matched with ball-and-socket.
9. bone screws according to claim 7, it is characterised in that: the first base (1) and/or second base (2) are opened
There is threaded hole, the shank of screw (6) is threadedly engaged with threaded hole.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710892210.XA CN109549696B (en) | 2017-09-27 | 2017-09-27 | Adjustable double-groove spine internal fixation device and bone screw |
| EP18849453.8A EP3689279B1 (en) | 2017-09-27 | 2018-04-10 | Adjustable double-slot spinal internal fixing device and bone screw |
| JP2019526609A JP6795225B2 (en) | 2017-09-27 | 2018-04-10 | Adjustable bi-groove internal fixation device and bone screw |
| AU2018330957A AU2018330957B9 (en) | 2017-09-27 | 2018-04-10 | Adjustable double-slot internal spinal fixation apparatus and bone screw |
| US16/482,712 US11684393B2 (en) | 2017-09-27 | 2018-04-10 | Adjustable double-slot internal spinal fixation apparatus and bone screw |
| PCT/CN2018/082550 WO2019062070A1 (en) | 2017-09-27 | 2018-04-10 | Adjustable double-slot spinal internal fixing device and bone screw |
| KR1020207010680A KR102365489B1 (en) | 2017-09-27 | 2018-04-10 | Adjustable Dual Slot Spinal Internal Fixture and Bone Screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710892210.XA CN109549696B (en) | 2017-09-27 | 2017-09-27 | Adjustable double-groove spine internal fixation device and bone screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109549696A true CN109549696A (en) | 2019-04-02 |
| CN109549696B CN109549696B (en) | 2024-03-22 |
Family
ID=65864048
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710892210.XA Active CN109549696B (en) | 2017-09-27 | 2017-09-27 | Adjustable double-groove spine internal fixation device and bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109549696B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111329568A (en) * | 2020-04-03 | 2020-06-26 | 贵州医科大学附属医院 | Flexible combined fixing device for spine |
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| CN201441445U (en) * | 2009-06-29 | 2010-04-28 | 山东威高骨科材料有限公司 | Fixer in spine |
| CN102488548A (en) * | 2011-11-30 | 2012-06-13 | 上海拓腾医疗器械有限公司 | Internal fixing device and internal fixing method of vertebral columns |
| US20120232593A1 (en) * | 2011-03-08 | 2012-09-13 | Daniel Predick | Posterior Cross Connector Assembly |
| CN105078562A (en) * | 2015-03-13 | 2015-11-25 | 上海三友医疗器械有限公司 | Medical screw with connector |
| CN208625834U (en) * | 2017-09-27 | 2019-03-22 | 上海三友医疗器械股份有限公司 | A kind of adjustable double flute internal fixation device of spine and bone screws |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201441445U (en) * | 2009-06-29 | 2010-04-28 | 山东威高骨科材料有限公司 | Fixer in spine |
| US20120232593A1 (en) * | 2011-03-08 | 2012-09-13 | Daniel Predick | Posterior Cross Connector Assembly |
| CN102488548A (en) * | 2011-11-30 | 2012-06-13 | 上海拓腾医疗器械有限公司 | Internal fixing device and internal fixing method of vertebral columns |
| CN105078562A (en) * | 2015-03-13 | 2015-11-25 | 上海三友医疗器械有限公司 | Medical screw with connector |
| CN208625834U (en) * | 2017-09-27 | 2019-03-22 | 上海三友医疗器械股份有限公司 | A kind of adjustable double flute internal fixation device of spine and bone screws |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111329568A (en) * | 2020-04-03 | 2020-06-26 | 贵州医科大学附属医院 | Flexible combined fixing device for spine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109549696B (en) | 2024-03-22 |
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