CN106901825A - A kind of installation tool of pedicle screw fixation system - Google Patents
A kind of installation tool of pedicle screw fixation system Download PDFInfo
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- CN106901825A CN106901825A CN201510979510.2A CN201510979510A CN106901825A CN 106901825 A CN106901825 A CN 106901825A CN 201510979510 A CN201510979510 A CN 201510979510A CN 106901825 A CN106901825 A CN 106901825A
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- screw
- jig arm
- rod
- positioning pipe
- plug screw
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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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
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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
- A61B17/7002—Longitudinal elements, e.g. rods
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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
- A61B17/7062—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
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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
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
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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
- A61B2017/564—Methods for bone or joint treatment
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- Orthopedic Medicine & Surgery (AREA)
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Abstract
The present invention provides a kind of installation tool of pedicle screw fixation system, the pedicle screw fixation system includes screw, nail rod and plug screw, the present invention includes positioning pipe, upper nail rod and plug screw mounting rod, the positioning pipe includes a left side, right jig arm, it is left, the leading inside of right jig arm is respectively equipped with the locating slot being connected with screw fit, positioning pipe is provided with the opening for wearing nail rod, the left side, the penetrating via along positioning pipe axial direction is formed in the middle of right jig arm, the upper nail rod is inserted into the penetrating via mounting screw of positioning pipe, the penetrating via that the plug screw mounting rod is inserted into positioning pipe installs plug screw.The present invention is positioned using positioning pipe, and is used always in follow-up work, upper nail, is put rod, plug screw and is installed and carried out with positioning pipe cooperation, effectively reduces the use of instrument, and simple to operate, substantially increases the efficiency of operation.
Description
Technical field
The present invention relates to spinal operation medicine equipment, more particularly to a kind of installation tool of pedicle screw fixation system.
Background technology
Pedicle screw fixation system is the internal fixation system commonly used in spinal surgery as a kind of surgical implants, its
Indication mainly includes：1) spinal trauma；2) retrogression pathological changes；3) tumor of spine；4) Spondylitis disease；5) backbone is congenital
Deformity.
Pedicle screw fixation system is main to be made up of screw, nail rod and plug screw.Screw is made up of rivet nut and nail seat, and rivet nut has outer spiral shell
Line is used to be screwed into backbone bone, and nail seat is provided with the U-lag for placing nail rod, and the U-lag inwall has hickey, nail seat
Can be connected firmly by the hickey and plug screw.
During operation, the implantation process (also deserve to be called nail and put rod motion) of pedicle screw fixation system is：First complete screw and upper nail device
Assembling, then operation on follow closely device insert screws into the specified location of backbone, then release screw and it is upper nail device connection；Will be required
The screw wanted is implanted into after backbone, reuse put rod device by follow closely rod be pressed into the U-lag of each nail seat, special tool is used afterwards
Plug screw is screwed into screw so as to pressing pin rod by tool.Concrete operations are as described below.
As shown in figure 1, existing upper nail device 7 includes the pressure head bar 72 in hollow threaded rod 71 and threaded rod 71, threaded rod
Having bolt 73 between 71 and pressure head bar 72 makes both keep connecting firmly or releasing connecting firmly；The head of threaded rod 71 has external screw thread 711, pressure
The head of head rod 72 has pressure head 721.Screw placement process (upper nail process) using existing upper nail device 7 is：1) pressure head of device 7 is followed closely on
721 are placed in U-lag the preliminary connection realized with screw, and then the external screw thread 711 of upper nail device 7 is screwed into the hickey of nail seat,
Operation bolt 73 makes threaded rod 71 keep connecting firmly constant, the assembling of nail device 7 and screw in completion with the relative position of pressure head bar 72；
2) backbone specified location is inserted screws into by following closely the handle 74 of the afterbody of device 7 in rotation；3) after screw is screwed into specified location, unclamp
Bolt 73 on upper nail device 7, its external screw thread 711 is exited rotating threaded rod 71 hickey of nail seat, finally by pressure head 721 with
Screw is separated.
As shown in Fig. 2 existing rod device 8 of putting is for club shaped structure, there is U-shaped interface 81 its front end, and U-shaped interface 81 has certain bullet
Property is in order to clamp nail rod.It is using the existing rod motion of putting for putting rod device 8：1) nail is clamped by putting the U-shaped interface 81 of rod device 8
Rod；2) operation is put rod device 8 and will follow closely rod through in all already installed screw U-lags；3) using specific purpose tool by plug screw according to
The secondary hickey for being screwed into each nail seat, so that pressing pin rod；4) annexation for putting rod device 8 and nail rod is released.
In summary, current operation technique is complex, and reason is upper nail process, puts rod motion and plug screw installation
It is separate, and it needs to use different equipment to be operated, therefore extend operating time.And because nail rod
Shape be uncertain in actual operation, therefore put higher to the technical requirements of operator during rod, this is also certain
Extend operating time in degree.Therefore, how to simplify operation technique, improve procedure efficiency, be that those skilled in the art need solution
Technical problem certainly.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of being rapidly completed in spinal operation follow closely, put rod work
The installation tool of pedicle screw fixation system, to overcome the defect in prior art.
In order to solve the above-mentioned technical problem, the present invention is adopted the following technical scheme that：A kind of erector of pedicle screw fixation system
Tool, the pedicle screw fixation system includes screw, nail rod and plug screw, and the nail seat of the screw is provided with U-lag, U-lag two ends
Inner side is respectively equipped with internal thread, outside and is respectively equipped with locating slot, and the plug screw is connected with the screw-internal thread fit of U-lag, it is described on
Nail puts rod device includes positioning pipe, upper nail rod and plug screw mounting rod；
The positioning pipe includes left jig arm and right jig arm, and the leading inside of left jig arm and right jig arm is respectively equipped with mounting groove,
Left jig arm and right jig arm are engaged with the U-lag two ends on screw by mounting groove and play positioning clamping effect, the left jig arm
With form the penetrating via along positioning pipe axial direction in the middle of right jig arm, the positioning pipe from two jig arm one end be provided with vertically for
Wear the opening of nail rod；
The front end of the upper nail rod is provided with two linking arms being set up in parallel, and is respectively equipped with the inside of described two linking arms
Positioning convex, described two positioning convex can be engaged with two locating slots on screw, and the upper nail rod can be from described
The penetrating via insertion of positioning pipe is simultaneously connected with screw fit；
The front end of the plug screw mounting rod is provided with the cooperating head being engaged with plug screw, and the plug screw mounting rod is from the positioning
The penetrating via insertion of pipe, makes plug screw be connected with the internal thread on screw U-lag.
Preferably, what is coordinated with the positioning pipe is provided with garter spring, and the garter spring is enclosed within left jig arm and the rear end of right jig arm will
Left jig arm and right jig arm are connected.
Preferably, one is cased with the upper nail rod with the externally threaded collar, the collar can only turn around upper nail rod axis
Dynamic, the rear end after the left jig arm and the connection of right jig arm is formed with female inner bolt hole, and the collar can be interior with described
Screw is threadedly coupled.
Further, also it is combined with stop nut on the collar.
Preferably, the upper nail rod rear end is provided with detachable handle.
Preferably, with the plug screw mounting rod coordinate be provided with a hollow sleeve pipe, the front end of described sleeve pipe is along quill
To the shrinkage pool being provided with for placing plug screw, the external diameter of described sleeve pipe and the penetrating via of positioning pipe are adapted, the internal diameter of sleeve pipe with
The external diameter of plug screw mounting rod is adapted.
As described above, a kind of installation tool of pedicle screw fixation system of the invention, has the advantages that：
The present invention is integrated with nail, puts rod, plug screw three kinds of functions of installation.
The present invention is positioned using positioning pipe, and is used always in follow-up work, upper nail, puts rod, plug screw installation
Coordinating with positioning pipe is carried out.It is not connected through a screw thread between positioning pipe and screw wherein, therefore is easy to release the dress with screw
With connection.When rod is put, nail rod initially passes through the opening on positioning pipe and then carries out pressure bar again, because the width of the opening is more than
Nail rod diameter, and height dimension of the opening on along screw central axial direction is big compared with the height dimension of U-lag, therefore more just
In nail rod penetrate and position control, and then also facilitate by follow closely rod press-in screw U-lag in.The present invention effectively reduces work
The use of tool, and it is simple to operate, substantially increase the efficiency of operation.
Brief description of the drawings
Fig. 1 is the structure chart of upper nail device in the prior art.
Fig. 2 is the structure chart for putting rod device in the prior art.
Fig. 3 is the left jig arm schematic diagram of positioning pipe in the present invention.
Fig. 4 is the broken away view of positioning pipe and screw in the present invention.
Fig. 5 is the structure chart of upper nail rod in the present invention.
Fig. 6 is the structure chart of plug screw mounting rod in the present invention.
Fig. 7 is upper nail state diagram of the invention.
Fig. 8 is the front view of Fig. 7.
Fig. 9 is sectional view at A-A in Fig. 8.
Figure 10 is enlarged drawing at B in Fig. 9.
Figure 11 puts rod state diagram for of the invention.
Figure 12 is the front view of Figure 11.
Figure 13 is sectional view at C-C in Figure 12.
Figure 14 is enlarged drawing at D in Figure 13.
In figure：1st, positioning pipe 11, left jig arm 12, right jig arm
13rd, mounting groove 14, penetrating via 15, opening
16th, inner bolt hole 2, upper nail rod 21, linking arm
211st, positioning convex 22, handle 3, plug screw mounting rod
31st, cooperating head 32, handle 4, garter spring
5th, the collar 6, sleeve pipe 61, shrinkage pool
7th, upper nail device 71, threaded rod 711, external screw thread
72nd, pressure head bar 721, pressure head 73, bolt
74th, handle 8, put rod device 81, U-shaped interface
91st, screw 92, nail rod 93, plug screw
911st, U-lag 912, locating slot
Specific embodiment
Structure, ratio, size depicted in Figure of description etc., are only used to coordinate the content disclosed in specification, with
Understand and read for those skilled in the art, be not limited to enforceable qualifications of the invention, therefore do not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated the present invention is not being influenceed
Under effect and the purpose to be reached, all should still fall in the range of disclosed technology contents to be covered.Meanwhile,
In this specification it is cited such as " on ", D score, "front", "rear", " centre " term, be merely convenient to understanding for narration, and
It is not used to limit enforceable scope of the invention, being altered or modified for its relativeness is changed under technology contents without essence, when
Also it is considered as enforceable category of the invention.
The present invention is a kind of installation tool of pedicle screw fixation system, as shown in Fig. 4, Figure 10-Figure 14, the spine nail rod system
System includes screw 91, nail rod 92 and plug screw 93.The nail seat of wherein described screw 91 is provided with U-lag 911, the two ends of U-lag 911
Inner side is respectively equipped with internal thread, outside and is respectively equipped with locating slot 912, and the plug screw 93 connects with the screw-internal thread fit of U-lag 911
Connect.As shown in Fig. 3-Figure 14, upper nail of the invention puts rod device includes positioning pipe 1, upper nail rod 2 and plug screw mounting rod 3.
As shown in Figure 3 and Figure 4, positioning pipe 1 includes the front end of left jig arm 11 and right jig arm 12, left jig arm 11 and right jig arm 12
Inner side is respectively equipped with mounting groove 13, and left jig arm 11 and right jig arm 12 are by the two ends phase of U-lag 911 on mounting groove 13 and screw 91
Positioning clamping effect is played in cooperation, i.e., the two ends of U-lag 911 can be stuck in the mounting groove 13 of left jig arm 11 and right jig arm 12
In.Formed along the penetrating via 14 of the axial direction of positioning pipe 1 in the middle of the left jig arm 11 and right jig arm 12, the positioning pipe 1 is from two
Jig arm one end is provided with the opening 15 for wearing nail rod 92, diameter of 15 width of the opening not less than nail rod 92 vertically.For
Be easy to processing, the left jig arm 11 is identical with the agent structure of right jig arm 12, i.e., in addition to the female thread structure difference of rear end,
Other structures all same.With reference to Fig. 3-Fig. 5, Fig. 7, Fig. 9, the front end of the upper nail rod 2 is provided with two linking arms being set up in parallel
21, and in order to it is easy to use, be easy to force, the rear end of the upper nail rod 2 is provided with detachable handle 22.Described two linking arms
21 inner side is respectively equipped with positioning convex 211, and described two positioning convex 211 can be with two on screw 91 locating slot 912
It is engaged, the upper nail rod 2 can be inserted from the penetrating via 14 of the positioning pipe 1 and is connected with screw 91；Upper nail rod 2
For screw 91 to be screwed into backbone.Dismounting is separated with locating slot 912 for the ease of follow-up positioning convex 211, it is described two
Linking arm 21 has elasticity, two non-fork states of linking arm 21, i.e., state as shown in Figure 5 under normality.Additionally, the positioning
Raised 211 outer rim is arc-shaped structure, and the edge of the locating slot 912 is also designed to bevelled form, i.e., such as Figure 10 institutes
Show.
With reference to Fig. 3, Fig. 4, Fig. 6, Figure 11-Figure 14, the front end of plug screw mounting rod 3 is provided with the cooperating head being engaged with plug screw 93
31, in order to it is easy to use, be easy to force, the rear end of plug screw mounting rod 3 is provided with handle 32, and the plug screw mounting rod 3 can be from institute
The penetrating via 14 for stating positioning pipe 1 is inserted, and plug screw 93 is connected with the internal thread on screw 91U shapes groove 911.When upper nail rod 2 will
After screw 91 is screwed into backbone, then nail rod 2 in taking-up wear nail rod 92 from the opening 15 of left jig arm 11 and the front end of right jig arm 12
Enter；Hereafter plug screw mounting rod 3 is inserted through passage 14 with plug screw 93, by the internal thread on plug screw 93 and screw 91U shapes groove 911
It is connected, and is pressed against on nail rod 92.
In the present embodiment, as shown in Fig. 4, Fig. 7-Fig. 9, with the positioning pipe 1 coordinate be provided with garter spring 4, the garter spring 4
Be connected for left jig arm 11 and right jig arm 12 by the rear end for being enclosed within left jig arm 11 and right jig arm 12, and this structure is installed simple, quick.
In other embodiments, it is also possible to which the connection to left jig arm 11 and right jig arm 12 is realized by clamping tool.
When actually used, in order to improve the stability of work, with reference to Fig. 4, Fig. 8-Fig. 9, one is cased with the upper nail rod 2
With the externally threaded collar 5, the collar 5 can only be rotated around the axis of upper nail rod 2, after the left jig arm 11 and the connection of right jig arm 12
Rear end formed with female inner bolt hole 16, the inner bolt hole 16 is through a part for passage 14, and the collar 5 can
It is threadedly coupled with the inner bolt hole 16.The principle of this structure is：Upper nail rod 2 is connected to form one by the collar 5 with positioning pipe 1,
So that the position of upper nail rod 2 is determined, and when rotating the collar 5 and being connected with positioning pipe 1, upper nail rod 2 can be with
When adjustment position be connected with the locating slot 912 on screw 91 with ensuring linking arm 21.When the collar 5 is connected with positioning pipe 1
Afterwards, positioning pipe 1, upper nail rod 2, screw 91 form an entirety, unitary rotation work when nail rod 2 is screwed into screw 91 in rotation.Enter
One step ground, is also combined with stop nut 51 on the collar 5.When using, after the collar 5 is threadedly coupled with positioning pipe 1, will be spacing
Nut 51 is threadedly coupled with the collar 5, and stop nut 51 is pressed on the end of positioning pipe 1, such that it is able to allow upper nail rod 2 not
Can continue into positioning pipe 1 in through hole 14, it is ensured that the spacing preiection 211 of linking arm 21 is steady with locating slot 912
Determine mated condition.
The handle 22 of the upper rear end of nail rod 2 is detachably connected with upper nail rod 2 described in the present embodiment, in order to separate storage.
By actually used, when plug screw 93 is installed using plug screw mounting rod 3, the outer surface of plug screw mounting rod 3 and left jig arm
11 and right jig arm 12 inner surface contact area it is smaller, it is unstable during operation, easily occur plug screw mounting rod 3 position skew,
The problem that plug screw 93 is aligned with the inconvenience of screw 91U shapes groove 911.Therefore in the present embodiment, as shown in figures 11-14, it is and described
What plug screw mounting rod 3 coordinated is provided with a hollow sleeve pipe 6, and the front end of described sleeve pipe 6 is axially arranged with for placing plug screw along sleeve pipe 6
93 shrinkage pool 61, the external diameter of described sleeve pipe 6 and the penetrating via 14 of positioning pipe 1 are adapted (i.e. with left jig arm 11 and right jig arm 12
Inner surface be adapted), the internal diameter of sleeve pipe 6 is adapted with the external diameter of plug screw mounting rod 3.When sleeve pipe 6 is enclosed within plug screw mounting rod 3
Afterwards, both can axially opposing movement.As shown in figure 13, sleeve pipe 6 and plug screw mounting rod 3 are inserted together positioning pipe 1 through logical
Behind road 14, sleeve pipe 6 can be effectively increased with the contact area of left jig arm 11 and right jig arm 12, while between sleeve pipe 6 and positioning pipe 1
Can only axially opposing movement, and then cause plug screw mounting rod 3 position will not shift.Also, Figure 14 is referred to, because plug screw
93 are mounted in the shrinkage pool 61 of sleeve pipe 6, therefore the position of plug screw 93 is also guaranteed so that plug screw mounting rod 3 is in peace
During dress plug screw 93 more quick and precisely, procedure efficiency is substantially increased.
In operation, mounting hole is beaten in advance using needing to be beaten on the predeterminated position of backbone before the present invention, with reference to Fig. 3-
Figure 14, upper nail hereafter and to put rod method as follows：
1) left jig arm 11 and right jig arm 12 are engaged with the locating slot 912 on screw 91 respectively by mounting groove 13, so
Afterwards by the rear end of left jig arm 11 and right jig arm 12 to together with, and left jig arm 11 and the rear end of right jig arm 12 are enclosed within garter spring 4, so that
So that positioning pipe 1 and screw 91 are combined into one, can limit screw 91 by two mounting grooves 13 rotates, with reference to Fig. 3-Fig. 5,
Fig. 7.
2) upper nail rod 2 is inserted through passage 14 from the side of garter spring 4, external force first is applied to two linking arms 21 during insertion
Merge it, then rotate the collar 5 simultaneously during insertion and allow it to be threadedly coupled with the inner bolt hole 16 of positioning pipe 1, in rotation
During the collar 5, upper nail rod 2 can be moved gradually to screw 91, it is therefore desirable to which adjusting the position of linking arm 21 makes its convex
211 are played to coordinate with the locating slot 912 on screw 91.When two positioning convex of linking arm 21 211 respectively with two locating slots 912
After working good, stop nut 51 is pressed against rotary stopper nut 51 end of positioning pipe 1, so as to ensure linking arm 21 and determine
The cooperation stabilization of position groove 912, prevents screw 91 from departing from positioning pipe 1.So far, screw 91, positioning pipe 1, upper nail rod 2, the collar 5, limit
Position nut 51 is an entirety, and with epispinal mounting hole be aligned screw 91 by hand-held positioning pipe 1, hereafter rotates upper nail rod 2
Screw 91 is screwed into backbone by handle 22, and work is followed closely in completion.
3) positioning pipe 1 and the annexation of upper nail rod 2 are released, i.e., rotates backward stop nut 51 and the collar 5 successively, made
Nail rod 2 is exited from penetrating via 14, because the elastic reaction and spacing preiection 211 of the linking arm 21 of upper nail rod 2 are circular arc,
Therefore easily deviate from from the locating slot 912 of screw 91.The position that upper nail rod 2 exits rear positioning pipe 1 remains stationary as.According to reality
Operation needs can install multiple screws 91 using many set present invention simultaneously, and the present embodiment is only to install as a example by one.
4) will be during nail rod 92 penetrate the opening 15 of positioning pipe 1, the position of adjustment nail rod 92 allows the U-shaped that it enters into screw 91
In groove 911, with reference to Figure 11.5) plug screw 93 is put into the shrinkage pool 61 of sleeve pipe 6, then is inserted through leading to from the side of garter spring 4 by sleeve pipe 6
Road 14, and the top pressure of sleeve pipe 6 is allowed in the end of screw 91, hereafter again by plug screw mounting rod 3 from the side plug-in-sleeve 6 of garter spring 4,
Rotating plug screw mounting rod 3 allows its cooperating head 31 to be connected with plug screw 93, and then the position of adjustment plug screw 93 makes it with screw 91U
The internal thread of shape groove 911 is engaged；Plug screw 93 is screwed into the handle 32 for rotating plug screw mounting rod 3 the interior spiral shell of the U-lag 911
Line, with being screwed into for plug screw 93, sleeve pipe 6 is blocked simultaneously by the another step for setting in the end of screw 91U shapes groove 911 or the end of positioning pipe 1
Holding position is constant, and plug screw 93 is gradually deviate from from shrinkage pool 61, and 93 pressing pin rod of plug screw, 92 pairs of nail rods 92 are positioned, and are completed
Put rod work.In this step, blocked by the another step for setting in the end of screw 91U shapes groove 911 or the end of positioning pipe 1 in sleeve pipe 6
Before, plug screw 93 can not be deviate from from the shrinkage pool 61 of sleeve pipe 6, can specifically allow plug screw 93 to be fitted close with shrinkage pool 61, Huo Zhe
Shrinkage pool 61 sets magnet and plays suction-operated to plug screw 93.
6) after completing above-mentioned steps, plug screw mounting rod 3 and sleeve pipe 6 are exited, then by garter spring 4 from left jig arm 11 and right jig arm
Removed on 12, the matching relationship of left jig arm 11 and right jig arm 12 and screw 91 is hereafter released again.So far, the upper nail in spinal operation
And put rod work completion.
In sum, the installation tool of a kind of pedicle screw fixation system of the invention, it is possible to increase upper nail puts the work of rod in backbone
Make efficiency, and it is simple to operation using the present invention.So, the present invention effectively overcomes some practical problems of the prior art
So as to have value very high and use meaning.Above-mentioned implementation method only illustrative principle of the invention and its effect,
Not for the limitation present invention.The present invention also many aspects can be improved on the premise of without prejudice to overall thought, right
Above-described embodiment can all be modified or changed under without prejudice to spirit and scope of the invention in those skilled in the art
Become.Therefore, such as those of ordinary skill in the art without departing from disclosed spirit and technological thought
Lower all completed equivalent modifications or change, should be covered by claim of the invention.
Claims (6)
1. a kind of installation tool of pedicle screw fixation system, the pedicle screw fixation system includes screw (91), nail rod (92) and plug screw
(93), the nail seat of the screw (91) is provided with U-lag (911), and internal thread, outer is respectively equipped with the inside of U-lag (911) two ends
Side is respectively equipped with locating slot (912), and the plug screw (93) is connected with the screw-internal thread fit of U-lag (911), it is characterised in that institute
State nail and put rod device including positioning pipe (1), upper nail rod (2) and plug screw mounting rod (3)；
The positioning pipe (1) includes the leading inside of left jig arm (11) and right jig arm (12), left jig arm (11) and right jig arm (12)
Mounting groove (13) is respectively equipped with, left jig arm (11) and right jig arm (12) are by the U-lag on mounting groove (13) and screw (91)
(911) two ends are engaged and play positioning clamping effect, are formed along positioning pipe (1) in the middle of the left jig arm (11) and right jig arm (12)
The penetrating via (14) of axial direction, the positioning pipe (1) is provided with for wearing opening for nail rod (92) vertically from two jig arm one end
Mouth (15)；
The front end of the upper nail rod (2) is provided with two linking arms being set up in parallel (21), the inner side of described two linking arms (21)
Positioning convex (211) is respectively equipped with, described two positioning convex (211) can be with two locating slots (912) on screw (91)
It is engaged, the upper nail rod (2) can coordinate company from the insertion of the penetrating via (14) of the positioning pipe (1) and with screw (91)
Connect；
The front end of the plug screw mounting rod (3) is provided with the cooperating head (31) being engaged with plug screw (93), the plug screw mounting rod (3)
Inserted from the penetrating via (14) of the positioning pipe (1), plug screw (93) is connected with the internal thread on screw (91) U-lag (911)
Connect.
2. the installation tool of a kind of pedicle screw fixation system according to claim 1, it is characterised in that：With the positioning pipe
(1) what is coordinated is provided with garter spring (4), and the garter spring (4) is enclosed within the rear end of left jig arm (11) and right jig arm (12) by left jig arm (11)
It is connected with right jig arm (12).
3. the installation tool of a kind of pedicle screw fixation system according to claim 1, it is characterised in that：The upper nail rod (2)
On be cased with one with the externally threaded collar (5), the collar (5) can only rotate around upper nail rod (2) axis, the left jig arm (11)
Formed with female inner bolt hole (16) with the rear end after right jig arm (12) connection, the collar (5) can be with the interior spiral shell
Hole (16) is threadedly coupled.
4. a kind of installation tool of pedicle screw fixation system according to claim 3, it is characterised in that：On the collar (5) also
It is combined with stop nut (51).
5. the installation tool of a kind of pedicle screw fixation system according to claim 1, it is characterised in that：The upper nail rod (2)
Rear end is provided with detachable handle (22).
6. the installation tool of a kind of pedicle screw fixation system according to claim 1, it is characterised in that：Installed with the plug screw
What bar (3) coordinated is provided with a hollow sleeve pipe (6), and the front end of described sleeve pipe (6) is axially arranged with for placing plug screw along sleeve pipe (6)
(93) shrinkage pool (61), the external diameter of described sleeve pipe (6) and the penetrating via (14) of positioning pipe (1) are adapted, the internal diameter of sleeve pipe (6)
External diameter with plug screw mounting rod (3) is adapted.
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| CN201510979510.2A CN106901825B (en) | 2015-12-23 | 2015-12-23 | A kind of installation tool of pedicle screw fixation system |
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| CN201510979510.2A CN106901825B (en) | 2015-12-23 | 2015-12-23 | A kind of installation tool of pedicle screw fixation system |
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| CN106901825A true CN106901825A (en) | 2017-06-30 |
| CN106901825B CN106901825B (en) | 2019-08-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020048088A1 (en) * | 2018-09-07 | 2020-03-12 | 上海锐植医疗器械有限公司 | Screw screwing device |
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| US20130103094A1 (en) * | 2011-10-25 | 2013-04-25 | Warsaw Orthopedic, Inc. | Spinal implant system and method |
| CN204158479U (en) * | 2014-09-29 | 2015-02-18 | 上海三友医疗器械有限公司 | A kind of bone screw and stretcher thereof |
| CN205411309U (en) * | 2015-12-23 | 2016-08-03 | 上海三友医疗器械有限公司 | Mounting tool of excellent system of backbone nail |
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| WO2006029373A1 (en) * | 2004-09-08 | 2006-03-16 | Nuvasive, Inc. | Systems and methods for performing spinal fixation |
| US20130103094A1 (en) * | 2011-10-25 | 2013-04-25 | Warsaw Orthopedic, Inc. | Spinal implant system and method |
| CN204158479U (en) * | 2014-09-29 | 2015-02-18 | 上海三友医疗器械有限公司 | A kind of bone screw and stretcher thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020048088A1 (en) * | 2018-09-07 | 2020-03-12 | 上海锐植医疗器械有限公司 | Screw screwing device |
| US11045243B2 (en) | 2018-09-07 | 2021-06-29 | Shanghai Reach Medical Instrument Co., Ltd. | Screw pegging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106901825B (en) | 2019-08-20 |
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Effective date of registration: 20220531 Address after: No.385, Huirong Road, Jiading Industrial Zone, Jiading District, Shanghai, 201815 Patentee after: SHANGHAI SANYOU MEDICAL Co.,Ltd. Patentee after: PLA Air Force Military Medical University Address before: No. 1988, Jiatang Road, Jiading District, Shanghai, 201807 Patentee before: SHANGHAI SANYOU MEDICAL Co.,Ltd. |
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