CN106551721B - Laterally adjustable section spinal bone screw - Google Patents
Laterally adjustable section spinal bone screw Download PDFInfo
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- CN106551721B CN106551721B CN201510642652.XA CN201510642652A CN106551721B CN 106551721 B CN106551721 B CN 106551721B CN 201510642652 A CN201510642652 A CN 201510642652A CN 106551721 B CN106551721 B CN 106551721B
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- nail
- nail seat
- mounting head
- tail
- stick slot
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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
- A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
- A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
-
- 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
- A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
- A61B17/7008—Longitudinal elements, e.g. rods with a cross-section which varies along its length with parts of, or attached to, the longitudinal elements, bearing against an outside of the screw or hook heads, e.g. nuts on threaded 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
- A61B17/7034—Screws or hooks with U-shaped head or back through which longitudinal rods pass characterised by a lateral opening
-
- 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
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7038—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other to a different extent in different directions, e.g. within one plane only
-
- 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
- A61B17/7043—Screws or hooks combined with longitudinal elements which do not contact vertebrae with a longitudinal element fixed to one or more transverse elements which connect multiple screws or hooks
-
- 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
- A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
-
- 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
- A61B17/8875—Screwdrivers, spanners or wrenches
- A61B17/8886—Screwdrivers, spanners or wrenches holding 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
- 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)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
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- General Health & Medical Sciences (AREA)
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- Surgical Instruments (AREA)
Abstract
A kind of transverse shift nail tail of present invention offer, laterally adjustable section spinal bone screw and method for implantation, screw includes the nail seat followed closely tail and be installed in the mounting head of nail tail, the top of nail seat is equipped with the stick slot for placing pitman, stick slot is recessed from the top down of nail seat and extends radially through nail seat, the bottom of stick slot is the curved surface being adapted with the peripheral surface of pitman, and the side of stick slot is equipped with and the matched locking screw thread of locking bolt；Nail tail, which includes one, can screw in Intrapyramidal fixed column and the platform positioned at the end of fixed column, and platform is equipped with the mounting head for being connect with nail seat, has eccentricity between the center of mounting head and the axis of fixed column.The transverse shift follows closely tail, laterally adjustable section spinal bone screw and method for implantation, by designing a completely new screw, realizes that nail seat connects being aligned, keep the installation process of pitman reliably effective, the unsuitable distortion of backbone will not be caused, the difficulty of surgical is reduced, improves surgical effect.
Description
Technical field
The invention further relates to a kind of laterally adjustable section spinal bone screws.
Background technology
The application of internal fixation of spine technology starts from the sixties in last century, is used for a variety of spinal diseases of operative treatment, such as backbone
Deformity, Adolescent Idiopathic Scoliosis Patients, spine fracture and backbone degenerative diseases etc..Internal fixation of spine technology can be sketched as following step
Suddenly：First, selection needs fixed spinal segments, and the epicentral privileged site of all or part at the segment both ends and therebetween is planted
Enter to be anchored instrument (such as hook or screw)；Then, connection instrument is locked in each hook or spiral shell (such as fixed rigid plate or hold-down bars)
It nails on, to limit relative motion inside the spinal segments, becomes a liptinite；Finally, each centrum in the segment
Between be put into bone-grafting material (such as autologous bone or bone alternate material), expect that the spinal segments are gradually fused into a period of time after operation
It is integrated, to ensure long-term stabilization.
Each single vertebra can be divided into front and back, front, that is, ventral direction part, and rear, that is, back direction part connects
The bone tissue connect between front and back is known as pedicle of vertebral arch.It is all that bone is entered by the Intrapyramidal spiral shell of pedicle of vertebral arch implantation by rear
Nail is referred to as pedicle screw, and the nail tail for usually staying in rear is used for locking pitman with stick slot.
Pedicle screw is most generally used anchor instrument in current spinal internal fixation system, by nail tail (implantation bone
Internal threaded portion) and nail seat (it remains in bone exterior section) composition.It is, in general, that pedicle screw is divided into fixed angles
Degree screw (as shown in Figure 1, nail tail and nail seat are integrated) and variable angle screw (as shown in Fig. 2, follow closely tail and nail seat have it is certain
Folding is dynamic to adjust angle) two kinds.
It is fixed in operation usually using more pieces of screws in a backbone, screw is implanted into respectively and each needs fixed centrum
It is interior, then pitman is packed into each screw slots and is locked to be finally reached the purpose of spinal fixation.The main root of implantation of screw
According to the limitation of the anatomical features and operative space of targeted vertebral body, even if therefore every screw enter the position and direction of bone in phase
It is also possible to very different between adjacent two centrums, the shortcomings that fixed angle screw is that angle of the backbone on the plane of side can not be adjusted
Degree can cause excessively to bend and stretch between centrum in the fixed stage when locking pitman, and use adjustable-angle screw can very great Cheng
Such issues that avoided on degree.However on spinal column orthophoria face, the different Intrapyramidal screws of implantation, which are likely to form, to be dislocated, in this way
It can especially be created great difficulties using multiple screws to the loading of pitman.Usual doctor has to do certain
It compromises, for example screw aligning to be difficult to ensure that every piece of screw is implanted into the ideal situation, or is passed through into bending as possible
Pitman is come each nail seat that is connected, such that surgical procedure is difficult complicated and increases certain uncertainty or causes
The unsuitable distortion of backbone.
Until now, there are no can satisfactorily solve the problems, such as this fixing equipment in spine and method.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of transverse shift nail tail, transverse directions
Adjustable spinal bone screw and method for implantation are difficult to aligning for solving to be implanted into Intrapyramidal more screws in the prior art
Problem.
In order to achieve the above objects and other related objects, the present invention provides a kind of transverse shift nail tail, and nail tail includes one
Intrapyramidal fixed column and the platform positioned at the end of fixed column can be screwed in, platform is equipped with the installation for being connect with nail seat
Head has eccentricity between the center of mounting head and the axis of fixed column.
Preferably, ranging from 1mm~5mm of the eccentricity between the center of mounting head and the axis of fixed column.
Preferably, the peripheral surface of fixed column is equipped with screw thread.
Preferably, the outer surface of mounting head is a spherical surface, and the top of mounting head is equipped with the non-circular installation being recessed inwardly
Adjustment hole.
In order to achieve the above objects and other related objects, the present invention also provides a kind of laterally adjustable section spinal bone screw, screws
Including described in above-mentioned technical proposal nail tail and the nail seat that is installed in the mounting head of nail tail, the top of nail seat is equipped with for placing
The stick slot of pitman, stick slot are recessed from the top down of nail seat and extend radially through nail seat, and the bottom of stick slot is and pitman
The side of the adaptable curved surface of peripheral surface, stick slot is equipped with and the matched locking screw thread of locking bolt.
Preferably, nail seat includes nail seat housing and the sliding tension ring that is sleeved in nail seat housing, and sliding tension ring is sleeved on nail
In the mounting head of tail, stick slot is located at the one end of nail seat housing far from sliding tension ring.
Further preferably sliding tension ring is equipped with the ball-and-socket for placing mounting head, and ball-and-socket is equipped with the opening towards mounting head,
The diameter of opening is less than the maximum gauge of mounting head.
Further preferably the circumferential surface of ball-and-socket is equipped with multiple extension slots being uniformly distributed circumferentially, and extension slot is from opening
Mouth extends to one end corresponding with opening.
Further preferred, the inner peripheral surface of nail seat housing is equipped with spacing collar, the inner circumferential of spacing collar towards one end of nail tail
Face is matched with the peripheral surface of the opening of ball-and-socket.
It is further preferably, the inner peripheral surface of nail seat housing corresponds to the part of ball-and-socket equipped with the loose section being recessed inwardly, wide
Gap is kept between loose section and the peripheral surface of ball-and-socket.
It is further preferably to slide at least one limiting slot for being additionally provided on the side wall of tension ring and extending from top down,
It is put on outside nail seat and is equipped with banking pin corresponding with limiting slot.
Further preferred, the one end of sliding tension ring towards stick slot is equipped with arc groove, inner peripheral surface and the stick slot of arc groove
Bottom it is corresponding, for sliding tension ring when being installed in place, the inner peripheral surface of arc groove protrudes from the bottom of stick slot.
In order to achieve the above objects and other related objects, laterally adjustable section spinal bone screw is implanted into the present invention also provides a kind of
Intrapyramidal method, as described in above-mentioned technical proposal, method for implantation includes the following steps the laterally adjustable section spinal bone screw：
1) each screw is determined on centrum enters nail point P, and the nail tail of each screw is entered to follow closely from preset one by one
Point P is screwed in centrum；
2) placement location that pitman is set on centrum, the placement location of pitman is labeled as with reference to straight line L；
3) rotating platform makes the center of mounting head to the maximum extent close to described with reference to straight line L；
4) nail seat is installed in the mounting head of each nail tail, rotates nail seat, so that the axis of the stick slot of all nail seats is located at same
On straight line；
5) pitman is inserted into stick slot, all nail seats is made to be linked together；
6) locking bolt is loaded onto one by one at the top of each nail seat, locking bolt stretches into stick slot, and the locking in stick slot
Screw thread matches.
As described above, transverse shift nail tail, laterally adjustable section spinal bone screw and method for implantation of the present invention, have beneficial below
Effect：
The transverse shift follows closely tail, laterally adjustable section spinal bone screw and method for implantation, real by designing a completely new screw
Existing nail seat connects being aligned, keeps the installation process of pitman reliably effective, will not cause the unsuitable distortion of backbone, reduce doctor
The difficulty of operation, improves surgical effect.
Description of the drawings
Fig. 1 is shown as the structural schematic diagram of fixed angle screw in the prior art.
Fig. 2 is shown as the structural schematic diagram of variable angle screw in the prior art.
Fig. 3 is shown as the structural schematic diagram of transverse shift nail tail of the present invention.
Fig. 4 is shown as the front view of transverse shift nail tail shown in Fig. 3.
Fig. 5 is shown as the structural schematic diagram of the laterally adjustable section spinal bone screw of the present invention.
Fig. 6 is shown as the structural schematic diagram of the nail seat of laterally adjustable section spinal bone screw shown in fig. 5.
Fig. 7 is shown as the stereoscopic schematic diagram of nail seat shown in fig. 6.
Fig. 8 is shown as the structural schematic diagram of the sliding tension ring of nail seat shown in fig. 6.
Fig. 9 to Figure 14 is shown as the step schematic diagram of the method for implantation of laterally adjustable section spinal bone screw shown in fig. 5.
Component label instructions
1 nail tail
11 fixed columns
12 platforms
13 mounting heads
14 installation and adjustment holes
2 nail seats
21 stick slots
22 locking screw threads
23 nail seat housings
24 sliding tension rings
25 ball-and-sockets
26 openings
27 extension slots
28 spacing collars
29 loose sections
210 limiting slots
211 banking pins
212 arc grooves
3 pitmans
4 locking bolts
The 5 nail special holding bottle openers of tail
6 centrums
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
Fig. 3 is please referred to Figure 14.It should be clear that structure, ratio, size etc. depicted in this specification institute accompanying drawings, are only used
To coordinate the revealed content of specification, so that those skilled in the art understands and reads, being not limited to the present invention can
The qualifications of implementation, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, should all still fall in disclosed skill
In the range of art content can cover.Meanwhile cited direction and quantization term in this specification, as "upper", "lower",
The term of "left", "right", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than can implement to limit the present invention
Range, relativeness is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable model of the present invention
Farmland.
As shown in Figure 3 to Figure 4, the present invention provides a kind of transverse shift nail tail 1, and nail tail 1, which includes one, can screw in centrum 6
Fixed column 11 and platform 12 positioned at the end of fixed column 11, platform 12 be equipped with the mounting head 13 for being connect with nail seat 2,
There is eccentricity between the center and the axis of fixed column 11 of mounting head 13.
By using eccentric mounting head 13, it can adjust the position of mounting head 13 by rotating fixed column 11, make mounting head
13 center close to reference to straight line L (i.e. the placement location of pitman 3), can make in mounting head 13 so to the maximum extent
Nail seat 2 be located on straight line as possible, make all nail seats 2 that can be connected by pitman 3, spinal bone screw be located on backbone
Optimal position will not cause the unsuitable distortion of backbone.
Eccentricity D's between the center and the axis of fixed column 11 of mounting head 13 ranges preferably from 1mm~5mm, this is partially
Range of the heart away from D substantially meets nail tail 1 in the range of rotation 1/4 week, you can makes mounting head 13 to the maximum extent close to ginseng
The directly requirement of line L.
For the ease of following closely the fixation of tail 1 and centrum 6, the peripheral surface of fixed column 11 is equipped with screw thread.
The outer surface of mounting head 13 is preferably a spherical surface, and the top of mounting head 13 is equipped with the non-circular installation being recessed inwardly
Adjustment hole 14.The section in installation and adjustment hole 14 is preferably hexagon, can be inserted into hexagonal bottle opener in installation and adjustment hole 14 in this way,
The position of mounting head 13 is adjusted using hexagonal bottle opener.
As shown in Fig. 5 to Fig. 8, the present invention provides a kind of laterally adjustable section spinal bone screw, including follows closely 1 He of tail as described above
The nail seat 2 being installed in the mounting head 13 of nail tail 1, the top of nail seat 2 are equipped with the stick slot 21 for placing pitman 3, stick slot 21
It is recessed from the top down of nail seat 2 and extends radially through nail seat 2, the bottom of stick slot 21 is to be adapted with the peripheral surface of pitman 3
Curved surface, the side of stick slot 21 is equipped with and 4 matched locking screw thread 22 of locking bolt.
Fixed column 11 due to nail seat 2 relative to nail tail 1 has certain transverse shift, if nail seat 2 is mounted on nail in advance
On tail 1, when nail tail 1 rotates, the movement outer circle of nail seat 2 is larger, it has not been convenient to operate, therefore the present invention propose it is a kind of assembling
Nail seat designs, and is installed on nail tail 1 after nail tail 1 fixes on centrum 6, then by nail seat 2.Nail in mounting head 13
Seat 2 can rotate in mounting head 13, and the axis of stick slot 21 for making multiple nail seats 2 in line, allows pitman 3 to be placed on stick
In slot 21, multiple stick slots 21 are connected together.In order to be fixedly connected with stick 3, locking bolt 4 also is housed from the top of stick slot 21, it will
Locking bolt 4 is matched with the locking screw thread 22 of the side of stick slot 21.
A kind of concrete structure of nail seat 2 is：Nail seat 2 includes nail seat housing 23 and the sliding tensioner being sleeved in nail seat housing 23
Ring 24, sliding tension ring 24 are sleeved in the mounting head 13 of nail tail 1, and stick slot 21 is located at nail seat housing 23 far from sliding tension ring 24
One end.
It sliding tension ring 24 and is equipped with the ball-and-socket 25 for placing mounting head 13, ball-and-socket 25 is equipped with the opening 26 towards mounting head 13,
The diameter of opening 26 is less than the maximum gauge of mounting head 13.Mounting head 13 can in ball-and-socket 25 multi-angle rotation, keep nail seat 2 more
Angular adjustment.
The circumferential surface of ball-and-socket 25 be equipped with multiple extension slots 27 being uniformly distributed circumferentially, extension slot 27 from opening 26 to open
26 corresponding one end of mouth extend.The shape of ball-and-socket 25 equipped with extension slot 27 is as petal, when mounting head 13 is put from opening 26
During entering ball-and-socket 25, the setting of extension slot 27 can make ball-and-socket 25 have certain elasticity, can extend slightly outwards, ensure
The smooth installation of mounting head 13；And when pitman 3 is installed in stick slot 21, pitman 3 can apply one to sliding tension ring 24
Fixed pressure, the setting of extension slot 27 can make ball-and-socket 25 have certain elasticity, can in time change sliding tension ring 24 along axis
To length, to adapt to the installation of pitman 3.
It will not be slid from nail seat housing 23 to ensure to slide tension ring 24, the inner peripheral surface of nail seat housing 23 is towards nail tail
1 one end is equipped with spacing collar 28, and the inner peripheral surface of spacing collar 28 is matched with the peripheral surface of the opening 26 of ball-and-socket 25.
The part that the inner peripheral surface of nail seat housing 23 corresponds to ball-and-socket 25 is equipped with the loose section 29 being recessed inwardly, loose section 29 and ball
Gap is kept between the peripheral surface of nest 25, provides the space deformed for ball-and-socket 25.
It slides and is additionally provided at least one limiting slot 210 extended from top down, nail seat housing on the side wall of tension ring 24
23 are equipped with banking pin corresponding with limiting slot 210 211.Precalculated position is reached when sliding tension ring 24 is inserted into nail seat housing 23
When, banking pin 211 is stuck in the bottom of limiting slot 210, will slide tension ring 24 and the relative position of nail seat housing 23 locks.
It slides the one end of tension ring 24 towards stick slot 21 and is equipped with arc groove 212, inner peripheral surface and the stick slot 21 of arc groove 212
Bottom is corresponding, and when sliding tension ring 24 is installed in place, the inner peripheral surface of arc groove 212 protrudes from the bottom of stick slot 21.Work as connection
After stick 3 is installed in stick slot 21, locking bolt 4 is loaded onto from the top of stick slot 21, since the inner peripheral surface of arc groove 212 protrudes from stick
The bottom of slot 21, pitman 3 can apply arc groove 212 certain pressure, so that sliding tension ring 24 is moved down, at this point, ball
Nest 25 locks mounting head 13 after deforming, and keeps the overall structure of laterally adjustable section spinal bone screw more firm.
Above-mentioned laterally adjustable section spinal bone screw is implanted into Intrapyramidal method, is included the following steps：
1) each screw is determined on centrum 6 enters nail point P, using following closely the special holding bottle opener 5 of tail by the nail of each screw
Tail 1 enters to follow closely in point P screw-in centrums 6 from preset one by one；
2) placement location that pitman 3 is set on centrum 6, the placement location of pitman 3 is labeled as with reference to straight line L；
3) hexagonal bottle opener is used to be inserted into installation and adjustment hole 14, rotating platform 12 makes the center of mounting head 13 to greatest extent
Ground is close to reference to straight line L；
4) mounting head 13 of each nail tail 1 is placed in the ball-and-socket 25 of nail seat 2, so that nail tail 1 is connect with nail seat 2, rotates
Nail seat 2 makes the axis of the stick slot 21 of all nail seats 2 be located on the same line；
5) pitman 3 is inserted into stick slot 21, all nail seats 2 is made to be linked together；
6) load onto locking bolt 4 one by one at the top of each nail seat 2, locking bolt 4 stretches into stick slot 21, and with stick slot 21
Interior locking screw thread 22 matches, at this point, pitman 3 can apply certain pressure to arc groove 212, make sliding tension ring 24 to
Lower movement, ball-and-socket 25 lock mounting head 13 after deforming.
In conclusion transverse shift nail tail, laterally adjustable section spinal bone screw and method for implantation of the present invention, by designing one
Completely new screw realizes that nail seat connects being aligned, keeps the installation process of pitman reliably effective, will not cause the unsuitable torsion of backbone
Song reduces the difficulty of surgical, improves surgical effect.So the present invention effectively overcome it is in the prior art various
Disadvantage and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (4)
1. a kind of laterally adjustable section spinal bone screw, it is characterised in that：Including nail tail (1) and it is installed on the installation for following closely tail (1)
Nail seat (2) on head (13), the nail tail (1) include a fixed column (11) that can be screwed in centrum (6) and are located at described solid
The platform (12) of the end of fixed column (11), the platform (12) is equipped with the mounting head (13) for being connect with nail seat (2), described
There is eccentricity, the center of the mounting head (13) and institute between the center and the axis of the fixed column (11) of mounting head (13)
State ranging from 1mm~5mm of the eccentricity between the axis of fixed column (11)；The top of the nail seat (2) is equipped with for placing
The stick slot (21) of pitman (3), the stick slot (21) are recessed from the top down of the nail seat (2) and extend radially through the nail
The bottom of seat (2), the stick slot (21) is the curved surface being adapted with the peripheral surface of the pitman (3), the stick slot (21)
Side is equipped with and locking bolt (4) matched locking screw thread (22)；The nail seat (2) includes nail seat housing (23) and is sleeved on institute
The sliding tension ring (24) in nail seat housing (23) is stated, the sliding tension ring (24) is sleeved on the mounting head of the nail tail (1)
(13) on, the stick slot (21) is located at the one end of the nail seat housing (23) far from the sliding tension ring (24)；The sliding
Tension ring (24) is equipped with the ball-and-socket (25) for placing the mounting head (13), and the ball-and-socket (25) is equipped with opening towards mounting head (13)
The diameter of mouth (26), the opening (26) is less than the maximum gauge of the mounting head (13)；It is set on the circumferential surface of the ball-and-socket (25)
Have multiple extension slots (27) being uniformly distributed circumferentially, the extension slot (27) from the opening (26) to the opening (26)
Corresponding one end extends, and the inner peripheral surface of the nail seat housing (23) corresponds to the part of the ball-and-socket (25) equipped with the loose being recessed inwardly
Loose section (29), gap is kept between the loose section (29) and the peripheral surface of the ball-and-socket (25).
2. laterally adjustable section spinal bone screw according to claim 1, it is characterised in that：The inner circumferential of the nail seat housing (23)
The one end of face towards nail tail (1) is equipped with spacing collar (28), the opening of the inner peripheral surface and the ball-and-socket (25) of the spacing collar (28)
(26) peripheral surface matches.
3. laterally adjustable section spinal bone screw according to claim 1, it is characterised in that：The side of the sliding tension ring (24)
At least one limiting slot (210) extended from top down is additionally provided on wall, the nail seat housing (23) is equipped with and the limit
The corresponding banking pin (211) of position slot (210).
4. laterally adjustable section spinal bone screw according to claim 1, it is characterised in that：The sliding tension ring (24) towards
One end of the stick slot (21) is equipped with arc groove (212), the bottom of the inner peripheral surface of the arc groove (212) and the stick slot (21)
Corresponding, when the sliding tension ring (24) is installed in place, the inner peripheral surface of the arc groove (212) protrudes from the stick slot (21)
Bottom.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642652.XA CN106551721B (en) | 2015-09-30 | 2015-09-30 | Laterally adjustable section spinal bone screw |
| US15/765,121 US20180303519A1 (en) | 2015-09-30 | 2016-06-08 | Transverse shift screw tail, transverse adjustable spinal screw, and implantation method |
| JP2018517295A JP2018531081A (en) | 2015-09-30 | 2016-06-08 | Lateral displacement screw tail, laterally adjustable spine screw and method of embedding the same |
| KR1020187012070A KR102240675B1 (en) | 2015-09-30 | 2016-06-08 | Transverse Shifting Screw Tail, Transverse Adjustable Spinal Screw and Implantation Method |
| AU2016333197A AU2016333197B2 (en) | 2015-09-30 | 2016-06-08 | Transverse shift screw tail, transverse adjustable spinal screw, and implantation method |
| PCT/CN2016/085194 WO2017054506A1 (en) | 2015-09-30 | 2016-06-08 | Transverse shifting screw-tail, laterally adjustable spinal screw and implantation method |
| EP16850131.0A EP3357442A4 (en) | 2015-09-30 | 2016-06-08 | Transverse shifting screw-tail, laterally adjustable spinal screw and implantation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642652.XA CN106551721B (en) | 2015-09-30 | 2015-09-30 | Laterally adjustable section spinal bone screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106551721A CN106551721A (en) | 2017-04-05 |
| CN106551721B true CN106551721B (en) | 2018-10-12 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510642652.XA Active CN106551721B (en) | 2015-09-30 | 2015-09-30 | Laterally adjustable section spinal bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106551721B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM566547U (en) * | 2018-03-21 | 2018-09-11 | 裕晟生物醫學股份有限公司 | Intramedullary nail structure |
| CN113384335B (en) * | 2021-05-24 | 2023-03-31 | 上海三友医疗器械股份有限公司 | Eccentric screw and spinal correction fixing system |
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| US6328739B1 (en) * | 1999-05-04 | 2001-12-11 | Industrial Technology Research Institute | Enhanced spine fixation apparatus |
| CN201143228Y (en) * | 2008-01-25 | 2008-11-05 | 上海浦卫医疗器械厂 | Vertebral column internal fixation nail stick |
| CN202161394U (en) * | 2011-07-26 | 2012-03-14 | 山东威高骨科材料有限公司 | Adjustable and movable pedicle screw on connecting rod |
| CN102596066A (en) * | 2009-03-26 | 2012-07-18 | 思邦科技脊柱智慧集团股份公司 | Spine fixation system |
| CN103565502A (en) * | 2012-07-25 | 2014-02-12 | 上海微创骨科医疗科技有限公司 | Spine dynamic connecting rod |
| CN205107855U (en) * | 2015-09-30 | 2016-03-30 | 上海三友医疗器械有限公司 | Transverse shift screw tail , horizontal adjustable backbone screw |
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2015
- 2015-09-30 CN CN201510642652.XA patent/CN106551721B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6328739B1 (en) * | 1999-05-04 | 2001-12-11 | Industrial Technology Research Institute | Enhanced spine fixation apparatus |
| CN201143228Y (en) * | 2008-01-25 | 2008-11-05 | 上海浦卫医疗器械厂 | Vertebral column internal fixation nail stick |
| CN102596066A (en) * | 2009-03-26 | 2012-07-18 | 思邦科技脊柱智慧集团股份公司 | Spine fixation system |
| CN202161394U (en) * | 2011-07-26 | 2012-03-14 | 山东威高骨科材料有限公司 | Adjustable and movable pedicle screw on connecting rod |
| CN103565502A (en) * | 2012-07-25 | 2014-02-12 | 上海微创骨科医疗科技有限公司 | Spine dynamic connecting rod |
| CN205107855U (en) * | 2015-09-30 | 2016-03-30 | 上海三友医疗器械有限公司 | Transverse shift screw tail , horizontal adjustable backbone screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106551721A (en) | 2017-04-05 |
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