Percutaneous posterior cervical single open-door internal fixation system
Technical field
The present invention relates to percutaneous spinal internal fixation systems, and in particular to fixed system in a kind of percutaneous posterior cervical single open-door
System.
Background technique
Existing posterior cervical " single open-door " technology needs to cut skin, removing vertebra side soft tissue and muscle from cervical vertebra rear,
Exposure cervical vertebra rear structure, rubs side vertebral plate and lateral mass has a common boundary (enabling side), and other side vertebral plate mono cortex abrades (door-hinge side),
Then it is raised to door-hinge side, is in " single open-door " state using line or interior fixed maintenance vertebral plate.Relative to Percutaneous endoscopic menisectomy,
Prior art wound is big, increases the incidence of wound infection risk and postoperative pain, then increases post-operative recovery time.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of percutaneous posterior cervical single open-door internal fixation system, pass through through
Skin is placed in the fixation device of Laminoplasty, and Percutaneous endoscopic technology auxiliary can be used by traction piece and carry out single open-door operation, accomplish
The percutaneous manipulation of single open-door operation, reduces the operation wound to cervical vertebra rear soft tissue, keeps " single open-door " operation more micro-
Woundization.
Percutaneous posterior cervical single open-door internal fixation system, including the first fixing piece, the second fixing piece, the first fixing piece of connection
With the traction piece of the second fixing piece, vertebral plate fixed part and pedicle of vertebral arch are respectively arranged on first fixing piece and the second fixing piece
First fixing piece can be tightened in the second fixing piece by the traction piece by fixed part.
Further, the traction piece is the drawstring for connecting the first fixing piece and the second fixing piece.
Further, the fixed system further includes carrying out at the both ends of drawstring with the first fixing piece and the second fixing piece respectively
Fixed the first locking assembly and the second locking assembly.
Further, first fixing piece includes first screw fixed with vertebral plate.
Further, first locking assembly includes passing through the first nut being threadedly engaged with the first screw, with the first spiral shell
The threaded hole of cap intersects through a draw cord channel is equipped on the first nut, and the spiral shell of the first nut is arranged in the draw cord channel
The tail portion of pit.
Further, second fixing piece includes second screw fixed with pedicle of vertebral arch.
Further, second locking assembly include be movably set in the second screw and for drawstring guiding guide part,
By the fixed fixation kit over the guide of drawstring.
Further, the guide channel for drawstring guiding is provided on the guide part, the fixation kit includes difference
Drawstring is fixed in the import and export of the guide channel locating part and compressing member are set, and the guide part passes through compression
Part is pressed in locating part.
Further, the locating part and compressing member are towards being equipped with non-slip texture on the side of guide part.
Further, the locating part is the bottom that the inlet side of guide channel is arranged in and connect with the second screw thread
Piece, the compressing member are the second nut that the outlet side of guide channel is arranged in and connect with the second screw thread.
Beneficial effects of the present invention: the merging of percutaneous screw can reduce operation to avoid the removing to rear paravertebral muscles
Wound, while cooperating cervical vertebra Percutaneous endoscopic technology, the detachment and part that vertebral plate is completed under mirror abrade the more accurate and peace that makes to perform the operation
Entirely.Meanwhile system locking device also under tape channel, using pedicle of vertebral arch as anchor point, vertebral plate nail is in vitro under locking rope drawing
The degree that can be opened the door with auxiliary door opening and locking.This system can percutaneously complete single open-door operation, reduce operation wound, be patient's
Quick recovery provides powerful guarantee.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples:
Fig. 1 is the structural schematic diagram of this system embodiment 1;
Fig. 2 is the use state diagram of this system embodiment 1;
Fig. 3 is the structural schematic diagram of embodiment 2;
Fig. 4 is the structural schematic diagram of embodiment 3.
Specific embodiment
Fig. 1 is the structural schematic diagram of this system embodiment 1, and Fig. 2 is the use state diagram of this system embodiment 1, this
Invent a kind of percutaneous posterior cervical single open-door internal fixation system, including the first fixing piece 1, the second fixing piece 2, the first fixation of connection
Be respectively arranged on the traction piece of part 1 and the second fixing piece 2, first fixing piece 1 and the second fixing piece 2 vertebral plate fixed part and
First fixing piece 1 can be tightened in the second fixing piece 2 by traction piece by pedicle of vertebral arch fixed part.This system is first consolidated first respectively
Determine part 1 and the second fixing piece 2 merging vertebral plate and pedicle of vertebral arch is fixed, the first fixing piece 1 is tightened in second by traction piece
Fixing piece 2, the first fixing piece 1 are rotated around door-hinge side, are raised to door-hinge side, are realized and are opened the door, and Percutaneous endoscopic can be used in this system
Technology auxiliary carries out single open-door operation, has accomplished the percutaneous manipulation of single open-door operation, has reduced the hand to cervical vertebra rear soft tissue
Art wound.
In the present embodiment, the traction piece is that one end is fixedly connected with the first fixing piece 1, and the other end is actively arranged in the
The drawstring 3 of two fixing pieces 2.Drawstring 3 can be bolted directly with the first fixing piece 1, and the other end is the freedom across the second fixing piece 2
Aforesaid operations can be realized by drawing the free end of drawstring 3 in end.
In the present embodiment, the fixed system further includes the locking assembly for the both ends of drawstring 3 to be fixed.Locking
Component includes the first locking assembly that the both ends of drawstring 3 are fixed with the first fixing piece 1 and the second fixing piece 2 respectively and
Two locking assemblies.It, can be respectively with the first locking assembly and the second locking assembly by the two of drawstring 3 after terminating single open-door operation
End lock onto the first fixing piece 1 and the second fixing piece 2, forms certain pretightning force, realizes locking and opens the door, prevents vertebra at enabling
The compressing again of plate.
In the present embodiment, first fixing piece 1 includes first screw fixed with vertebral plate, and the first screw is in hollow
Empty screw, the guiding for guide pin.First locking assembly includes passing through the first nut 4 being threadedly engaged with the first screw,
Intersect with the threaded hole of the first nut 4 through a draw cord channel 5 is equipped on the first nut, draw cord channel 5 is arranged first
The tail portion of the threaded hole of nut 4.During being placed in the first screw, guide pin first is squeezed into vertebral plate, is then squeezed by guide pin
First screw, the first screw inner hollow are provided with the blind hole for accommodating guide pin, outer shape and existing operation screw phase
Together, specifically squeezing into mode is also to belong to the prior art, and details are not described herein.It is appreciated that the first nut 4 is provided with threaded hole
, so that the outer end of the first screw is threadedly coupled, and the threaded hole of the first nut 4 is communicated with draw cord channel 5, and drawstring is logical
The tail portion of the threaded hole of the first nut 4 is arranged in road 5, right when the first screw screws in the tail end of 4 threaded hole of the first nut
The drawstring 3 of 5 the inside of draw cord channel is held out against, to play fixed operation, facilitates the progress of operation.
In the present embodiment, second fixing piece 2 includes second screw fixed with pedicle of vertebral arch, and the second screw 21 is hollow
Hollow screw, the guiding for guide pin.The implantation mode of second screw is identical as the first screw.Second locking assembly includes living
Drawstring 3 is fixed on the fixation kit on guide part 6 by the dynamic guide part 6 for being sheathed on the second screw and being oriented to for drawstring 3.It leads
The guide channel 7 being oriented to for drawstring 3 is provided on part 6, the fixation kit includes being separately positioned on the guide channel 7
Import and export locating part 8 and compressing member 9 that drawstring 3 is fixed, the guide part 6 is pressed in limit by compressing member 9
Part 8.The present embodiment compressing member 9 uses egative film and second using the second nut connecting with the second screw thread, locating part 8
Screw thread connection, be adjustable in the axial direction in this way.It, can be simultaneously to drawstring 3 using locating part 8 and compressing member 9
Carry out a compression positioned at the two sides of guide channel 7, to play the operation fixed to drawstring 3, facilitate subsequent procedures into
Row.
In the present embodiment, the locating part 8 and compressing member 9, can be with towards being equipped with non-slip texture on the side of guide part 6
Increase locating part 8 and compressing member 9 to the pretightning force of drawstring 3, wherein 10 be human body deep tissues.
Fig. 3 be this system embodiment 2 structural schematic diagram, the present embodiment the difference from embodiment 1 is that, embodiment 2
Guide channel 7 is two, is arranged on guide part 6 in the same direction, is symmetricly set on the two sides at 6 center of guide part, the present embodiment drawstring 3
After draw cord channel 5, both ends are free end, two guide channels 7 of guide part 6 are each passed through, using such setting side
Formula can make the process of traction more stable, and surgical procedure is facilitated more smoothly to carry out, while fixation after the completion of performing the operation is more firm
It leans on.
Fig. 4 be this system embodiment 3 structural schematic diagram, the present embodiment the difference from embodiment 1 is that, embodiment 2
Guide channel is two, but one is arranged on guide part 6, another is arranged on egative film 8, and the present embodiment drawstring 3 passes through
After draw cord channel 5, both ends are free end, and two guide channels being each passed through on guide part 6 and egative film 8 are set using such
The mode of setting can make the process of traction more stable, and surgical procedure is facilitated more smoothly to carry out.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.