CN110432963A - A kind of pedicle of vertebral arch Minimally Invasive Surgery instrument - Google Patents
A kind of pedicle of vertebral arch Minimally Invasive Surgery instrument Download PDFInfo
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- CN110432963A CN110432963A CN201910789787.7A CN201910789787A CN110432963A CN 110432963 A CN110432963 A CN 110432963A CN 201910789787 A CN201910789787 A CN 201910789787A CN 110432963 A CN110432963 A CN 110432963A
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- sleeve
- screw
- narrowed portion
- wall
- pedicle
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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
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
-
- 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
-
- 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
-
- 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
- A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
-
- 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
-
- 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
-
- 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
-
- 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
- A61B17/90—Guides therefor
Abstract
The present invention provides a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument, it is characterised in that: it includes the merging guiding device of pedicle screw and corresponding cooperation.The configuration of the present invention is simple, it is easy to use, can be fast and accurately solid pedicle screw setting merging channel, allow solid pedicle screw to apply in Minimally Invasive Surgery the defect for overcoming in existing Minimally Invasive Surgery and can only using hollow Pediculus arcus vertebrae screw.
Description
Technical field:
The present invention relates to field of surgical, are specifically exactly a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument.
Background technique:
With the development of society, amount for surgical fixed in spinal surgery Thoracolumbar disk has increased trend year by year, spinal pedicle spiral shell
Fixed demand is followed closely also therefore to increase, be widely used in treatment backbone degenerative disorders and deformity of spine, fracture, tumour,
Infection etc..In order to pursue precision, minimally invasiveization of spinal operation, minimal invasion pedicle screw is also gradually applied to clinic.Mesh
The preceding minimal invasion pedicle screw used is different from the screw of conventional therapy, usually hollow screw, and hollow design
Screw the disadvantages of may will be greatly reduced its bending or fatigue strength, making it there are fixing intensities insufficient, orthopedic limited strength,
Restore solid screw of the ability not as good as open surgery of hurt vertebra height, correct spinal anterior approach etc. during surgery, especially
Its use is limited when Upper thoracic pedicle of vertebral arch is thinner.
Therefore, designing a kind of becomes urgent demand in the solid pedicle screw of minimal invasion and its embedded device.
Summary of the invention:
The present invention is exactly to provide a kind of minimally invasive solid pedicle of vertebral arch to overcome the shortcomings of in existing minimal invasion hollow screw technology
The Minimally Invasive Surgery instrument that screw and merging guiding device are constituted.
The application the following technical schemes are provided:
A kind of pedicle of vertebral arch Minimally Invasive Surgery instrument, it is characterised in that: it includes that the merging of pedicle screw and corresponding cooperation is led
To device, the merging guiding device includes guide post, and central through hole is equipped on guide post, first set is arranged on guide post
Tin, it is arranged with second sleeve in first sleeve, 3rd sleeve is arranged in second sleeve, the 4th is arranged in 3rd sleeve
Sleeve is equipped with a pair of of fin in 4th sleeve upper end end, is equipped with one group of pointed tooth in 4th sleeve lower end；The vertebral arch
Root screw includes solid shank of screw, is connected with staple seat in shank of screw upper end, is equipped with and the 4th set on staple seat outer wall
The cambered surface of cylinder inner wall corresponding matching, is connected with empennage on two wall top of staple seat, in empennage and two wall top of staple seat
Junction be equipped with groove.
Based on the above technical solution, there can also be technical solution further below:
The lower end of the guide post is equipped with taper narrowed portion, the first narrowed portion is equipped in the lower end of first sleeve, second
The lower end of sleeve is equipped with the second narrowed portion, third narrowed portion is equipped in the lower end of 3rd sleeve, in the lower end of 4th sleeve
Portion is equipped with the 4th narrowed portion.
Reinforcing rib is additionally provided between the fin and 4th sleeve.
It is equipped with through-hole in the staple seat bottom, the through-hole wall is equipped with cambered surface, screw is arranged in through-hole
Bar is equipped with the bulb cooperated with cambered surface corresponding matching on the shank of screw top, locking slot is equipped on bulb, on bulb
It is equipped with the compressing member of corresponding matching in staple seat, the screw thread with staple seat inner wall corresponding matching is equipped on compressing member outer wall,
Relief hole corresponding with locking slot is equipped on compressing member.
It is equipped in the staple seat bottom and is made into integration shank of screw, be connected with gland in staple seat internal screw thread, pressing
It covers and is equipped with locking hole.
Invention advantage:
It is the configuration of the present invention is simple, easy to use, operating walk way fast and accurately can be provided to be placed in solid pedicle screw,
Solid pedicle screw is used in the operation of minimal invasion, and then greatly improves the intensity of minimal invasion screw, is dropped
The complication of low operation reduces the operation wound of patient and the broken nail phenomenon of screw nail body, has important clinical meaning.
Detailed description of the invention:
Fig. 1 is the stereoscopic schematic diagram that guiding device is placed in the present invention；
Fig. 2 is the structural schematic diagram that guiding device is placed in the present invention；
Fig. 3 is schematic diagram when embodiment 1 is placed in screw；
Fig. 4 is schematic diagram when embodiment 2 is placed in screw；
Fig. 5 is A in Fig. 4 to enlarged drawing；
Fig. 6 is pedicle screw schematic diagram in embodiment 1；
Fig. 7 is pedicle screw schematic diagram in embodiment 2；
Fig. 8 is pedicle screw schematic diagram in embodiment 3；
Fig. 9 is B in Fig. 8 to enlarged drawing；
Figure 10 is the schematic diagram of 8 top bulb 8a of shank of screw in embodiment 3；
Figure 11 is schematic diagram when embodiment 4 is placed in screw.
Specific embodiment:
Embodiment 1:
As described in Fig. 1-3 and Fig. 6, a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument, it includes pedicle screw and corresponding cooperation
Merging guiding device, the merging guiding device includes guide post 1, is equipped with the circle that is coaxially distributed in the lower end of guide post 1
The narrowed portion 1b of taper is equipped with central through hole 1a along axis on guide post 1 and narrowed portion 1b.The guide post 1 and narrowed portion 1b
It is an integral structure.
It is inserted with first sleeve 2 on the outside of guide post 1, is equipped with the cone being coaxially distributed in 2 lower end of first sleeve
First narrowed portion 2a.The inner tube wall of first sleeve 2 is with the coaxial distribution of first sleeve 2 and axially through first sleeve 2 and first
Narrowed portion 2a.The horizontal cross-section of the inner tube wall of the first sleeve 2 is circle, and diameter is slightly larger than the diameter of guide post 1.So that the
One sleeve 2 and the first narrowed portion 2a can be set on 1 outer wall of guide post, and can axially be slidably reciprocated along guide post 1.Described
One sleeve 2 is an integral structure with the first narrowed portion 2a.
The length of the guide post 1 is greater than the length of first sleeve 2.So that after 2 sets of first sleeve on guide post 1, guide post 1
Upper end can stretch out the upper end of first sleeve 2, so that doctor extracts guide post 1 out.
It is inserted with second sleeve 3 on the outside of first sleeve 2, the circular cone being coaxially distributed is equipped in 3 lower end of second sleeve
Second narrowed portion 3a of shape.The coaxial distribution of the inner tube wall of second sleeve 3 and second sleeve 3 and axially through second sleeve 3 with
Second narrowed portion 3a.The horizontal cross-section of the inner tube wall of second sleeve 3 is the diameter that round and diameter is slightly larger than first sleeve 2.Make
Obtaining second sleeve 3 and the second narrowed portion 3a can be set on 2 outer wall of first sleeve, and can be axial next along first sleeve 2
Return sliding.The second sleeve 3 is an integral structure with the second narrowed portion 3a.
The length of the first sleeve 2 is greater than the length of second sleeve 3.So that 3 sets of second sleeve in first sleeve 2
Afterwards, the upper end of first sleeve 2 can stretch out the upper end of second sleeve 3, so that doctor can extract first set out out of second sleeve 3
Cylinder 2.
It is inserted with 3rd sleeve 4 on the outside of second sleeve 3, the circular cone being coaxially distributed is equipped in 4 lower end of 3rd sleeve
The third narrowed portion 4a of shape.The coaxial distribution of the inner tube wall of 3rd sleeve 4 and 3rd sleeve 4 and axially through 3rd sleeve 4 with
Third narrowed portion 4a.The horizontal cross-section of the inner tube wall of 3rd sleeve 4 is circle, and the diameter of 4 inner tube wall of 3rd sleeve is slightly larger than the
The diameter of two sleeves 3.3rd sleeve 4 and third narrowed portion 4a are set on 3 outer wall of second sleeve, and can edge
Second sleeve 3 is axial to slidably reciprocate.The 3rd sleeve 4 is an integral structure with third narrowed portion 4a.
The length of the second sleeve 3 is greater than the length of 3rd sleeve 4.So that after 4 sets of 3rd sleeve in second sleeve 3
The upper end of second sleeve 3 can stretch out the upper end of 3rd sleeve 4, so that doctor can extract second sleeve out out of 3rd sleeve 4
3。
It is inserted with 4th sleeve 5 on the outside of 3rd sleeve 4, the circular cone being coaxially distributed is equipped in 5 lower end of 4th sleeve
4th narrowed portion 5a of shape.The coaxial distribution of the inner tube wall of 4th sleeve 5 and 4th sleeve 5 and axially through 4th sleeve 5 with
4th narrowed portion 5a.The horizontal cross-section of the inner tube wall of the 4th sleeve 5 is circle, and the inner tube wall diameter of 4th sleeve 5 is bigger
In the diameter of 3rd sleeve 4.4th sleeve 5 and the 4th narrowed portion 5a are set on 4 outer wall of 3rd sleeve, and can
Axially to slidably reciprocate along 3rd sleeve 4.
The pointed tooth 5b of one group of triangle is evenly equipped on the lower end of the 4th narrowed portion 5a.In 5 upper end end of 4th sleeve
Fin 6 equipped with a pair of of horizontal distribution.Reinforcing rib 7 is additionally provided between every fin 6 and the outer wall of 4th sleeve 5.Described
Reinforcing rib 7 is triangular structure of right angle, and hook and the fin 6 of the reinforcing rib 7 are fixedly welded, the stock and the 4th of the reinforcing rib 7
The outer wall of sleeve 5 is fixedly welded, and the string of the reinforcing rib 7 is the arc 7a of indent.The 4th sleeve 5 and the 4th narrowed portion 5a
And pointed tooth 5b is an integral structure.The altitude scale 5c being distributed vertically is also portrayed on the inner wall of 4th sleeve 5.
The length of the 3rd sleeve 4 is greater than the length of 4th sleeve 5.So that after 5 sets of 4th sleeve in 3rd sleeve 4
The upper end of 3rd sleeve 4 can stretch out the upper end of 4th sleeve 5, so that doctor can extract 3rd sleeve out out of 4th sleeve 5
4。
The pedicle screw includes solid shank of screw 8, is connected with staple seat 9 in 8 upper end of shank of screw, described
Shank of screw 8 is an integral structure with staple seat 9.
The cambered surface 9a with 5 inner wall corresponding matching of 4th sleeve, and two arcs are equipped on the outer wall of 9 two sides of staple seat
The diameter of spacing between the 9a arc top of face less than the 4th lower end narrowed portion 5a.To be moved after pedicle screw is placed in bone
Except 4th sleeve.
It is connected with empennage 9b on 9 two sides outer wall top of staple seat, in empennage 9b and 9 two sides outer wall top of staple seat
Junction be equipped with groove 9c.The groove 9c is that its center of circle of arc-shaped slot is identical as the center of circle of cambered surface 9a.
Gland 9d is equipped in staple seat 9, the gland 9d periphery is equipped with corresponding with 9 two sides inner wall of staple seat
The screw thread of cooperation.It is equipped with gland locking slot 9e on gland 9d, is equipped with pedicle screw on the staple seat 9 below gland 9d
Locking slot 10.The diameter of the gland locking slot 9e is greater than the diameter of pedicle screw locking slot 10.
Embodiment 2:
As described in Fig. 1,2,4,5 and 7, a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument, it includes pedicle screw and corresponding matches
The merging guiding device of conjunction, the merging guiding device include guide post 1, is equipped in the lower end of guide post 1 and is coaxially distributed
The narrowed portion 1b of cone is equipped with central through hole 1a along axis on guide post 1 and narrowed portion 1b.The guide post 1 and narrowed portion
1b is an integral structure.
It is inserted with first sleeve 2 on the outside of guide post 1, is equipped with the cone being coaxially distributed in 2 lower end of first sleeve
First narrowed portion 2a.The inner tube wall of first sleeve 2 is with the coaxial distribution of first sleeve 2 and axially through first sleeve 2 and first
Narrowed portion 2a.The horizontal cross-section of the inner tube wall of the first sleeve 2 is circle, and diameter is slightly larger than the diameter of guide post 1.So that the
One sleeve 2 and the first narrowed portion 2a can be set on 1 outer wall of guide post, and can axially be slidably reciprocated along guide post 1.Described
One sleeve 2 is an integral structure with the first narrowed portion 2a.
The length of the guide post 1 is greater than the length of first sleeve 2.So that after 2 sets of first sleeve on guide post 1, guide post 1
Upper end can stretch out the upper end of first sleeve 2, so that doctor extracts guide post 1 out.
It is inserted with second sleeve 3 on the outside of first sleeve 2, the circular cone being coaxially distributed is equipped in 3 lower end of second sleeve
Second narrowed portion 3a of shape.The coaxial distribution of the inner tube wall of second sleeve 3 and second sleeve 3 and axially through second sleeve 3 with
Second narrowed portion 3a.The horizontal cross-section of the inner tube wall of second sleeve 3 is the diameter that round and diameter is slightly larger than first sleeve 2.Make
Obtaining second sleeve 3 and the second narrowed portion 3a can be set on 2 outer wall of first sleeve, and can be axial next along first sleeve 2
Return sliding.The second sleeve 3 is an integral structure with the second narrowed portion 3a.
The length of the first sleeve 2 is greater than the length of second sleeve 3.So that 3 sets of second sleeve in first sleeve 2
Afterwards, the upper end of first sleeve 2 can stretch out the upper end of second sleeve 3, so that doctor can extract first set out out of second sleeve 3
Cylinder 2.
It is inserted with 3rd sleeve 4 on the outside of second sleeve 3, the circular cone being coaxially distributed is equipped in 4 lower end of 3rd sleeve
The third narrowed portion 4a of shape.The coaxial distribution of the inner tube wall of 3rd sleeve 4 and 3rd sleeve 4 and axially through 3rd sleeve 4 with
Third narrowed portion 4a.The horizontal cross-section of the inner tube wall of 3rd sleeve 4 is circle, and the diameter of 4 inner tube wall of 3rd sleeve is slightly larger than the
The diameter of two sleeves 3.3rd sleeve 4 and third narrowed portion 4a are set on 3 outer wall of second sleeve, and can edge
Second sleeve 3 is axial to slidably reciprocate.The 3rd sleeve 4 is an integral structure with third narrowed portion 4a.
The length of the second sleeve 3 is greater than the length of 3rd sleeve 4.So that after 4 sets of 3rd sleeve in second sleeve 3
The upper end of second sleeve 3 can stretch out the upper end of 3rd sleeve 4, so that doctor can extract second sleeve out out of 3rd sleeve 4
3。
It is inserted with 4th sleeve 5 on the outside of 3rd sleeve 4, the circular cone being coaxially distributed is equipped in 5 lower end of 4th sleeve
4th narrowed portion 5a of shape.The coaxial distribution of the inner tube wall of 4th sleeve 5 and 4th sleeve 5 and axially through 4th sleeve 5 with
4th narrowed portion 5a.The horizontal cross-section of the inner tube wall of the 4th sleeve 5 is circle, and the inner tube wall diameter of 4th sleeve 5 is bigger
In the diameter of 3rd sleeve 4.4th sleeve 5 and the 4th narrowed portion 5a are set on 4 outer wall of 3rd sleeve, and can
Axially to slidably reciprocate along 3rd sleeve 4.
The pointed tooth 5b of one group of triangle is evenly equipped on the lower end of the 4th narrowed portion 5a.In 5 upper end end of 4th sleeve
Fin 6 equipped with a pair of of horizontal distribution.Reinforcing rib 7 is additionally provided between every fin 6 and the outer wall of 4th sleeve 5.Described
Reinforcing rib 7 is triangular structure of right angle, and hook and the fin 6 of the reinforcing rib 7 are fixedly welded, the stock and the 4th of the reinforcing rib 7
The outer wall of sleeve 5 is fixedly welded, and the string of the reinforcing rib 7 is the arc 7a of indent.The 4th sleeve 5 and the 4th narrowed portion 5a
And pointed tooth 5b is an integral structure.The altitude scale 5c being distributed vertically is also portrayed on the inner wall of 4th sleeve 5.
The length of the 3rd sleeve 4 is greater than the length of 4th sleeve 5.So that after 5 sets of 4th sleeve in 3rd sleeve 4
The upper end of 3rd sleeve 4 can stretch out the upper end of 4th sleeve 5, so that doctor can extract 3rd sleeve out out of 4th sleeve 5
4。
The pedicle screw includes solid shank of screw 8 and staple seat 9, on the outer wall of 9 two sides of staple seat
Equipped with the cambered surface 9a with 5 inner wall corresponding matching of 4th sleeve, and the spacing between two cambered surface 9a arc tops is less than the 4th narrowed portion
The diameter of the lower end 5a.So that 4th sleeve can be removed after pedicle screw is placed in bone.
It is equipped with through-hole 12 in 9 bottom of staple seat, the inner wall of the through-hole 12 is equipped with cambered surface, in through-hole 12
It is inserted with solid shank of screw 8.The cambered surface corresponding matching cooperation on the inner wall with through-hole 12 is equipped on 8 top of shank of screw
Bulb 8a, being equipped with sagging locking slot 8b, the locking slot 8b at the top of bulb 8a is linear type or cross or rectangular
Or hexagon.The bulb 8a is an integral structure with shank of screw 8, and the screw pitch on screw rod is wider.
It is equipped with compressing member 11 in the staple seat 9 on bulb 8a, is equipped with and 9 inner wall of staple seat on 11 outer wall of compressing member
The screw thread of corresponding matching is equipped with the spherical groove 11b that can be provide with the upper end bulb 8a in 11 bottom of compressing member.
It is equipped on the slot bottom of spherical groove 11b straight with relief hole 11a, the relief hole 11a of the locking slot 8b to cooperation
Diameter is greater than the diameter of locking slot 8b, and the relief hole 11a is hexagon, is equipped with and bulb 8a corresponding matching at lower ending opening
Spherical surface.
It is connected with empennage 9b on 9 two sides outer wall top of staple seat, in empennage 9b and 9 two sides outer wall top of staple seat
Junction be equipped with groove 9c.Gland 9d is equipped in staple seat 9 above compressing member 11, on the gland 9d periphery
Equipped with the screw thread with 9 two sides inner wall corresponding matching of staple seat, gland locking slot 9e is equipped on gland 9d.The gland locking
Diameter of the diameter of slot 9e greatly with relief hole 11a, and diameter of the diameter of relief hole 11a greatly with locking slot 8b.
Presence due to there is bulb enables pedicle screw to obtain bigger angle of oscillation, and the postoperative movement of patient is more certainly
Such as.
Embodiment 3:
A kind of pedicle of vertebral arch Minimally Invasive Surgery instrument as shown in Fig. 1,2,8,9,10, it includes pedicle screw and corresponding cooperation
It is placed in guiding device, the merging guiding device includes guide post 1, is equipped with the circular cone being coaxially distributed in the lower end of guide post 1
The narrowed portion 1b of shape is equipped with central through hole 1a along axis on guide post 1 and narrowed portion 1b.The guide post 1 is with narrowed portion 1b
Integral structure.
It is inserted with first sleeve 2 on the outside of guide post 1, is equipped with the cone being coaxially distributed in 2 lower end of first sleeve
First narrowed portion 2a.The inner tube wall of first sleeve 2 is with the coaxial distribution of first sleeve 2 and axially through first sleeve 2 and first
Narrowed portion 2a.The horizontal cross-section of the inner tube wall of the first sleeve 2 is circle, and diameter is slightly larger than the diameter of guide post 1.So that the
One sleeve 2 and the first narrowed portion 2a can be set on 1 outer wall of guide post, and can axially be slidably reciprocated along guide post 1.Described
One sleeve 2 is an integral structure with the first narrowed portion 2a.
The length of the guide post 1 is greater than the length of first sleeve 2.So that after 2 sets of first sleeve on guide post 1, guide post 1
Upper end can stretch out the upper end of first sleeve 2, so that doctor extracts guide post 1 out.
It is inserted with second sleeve 3 on the outside of first sleeve 2, the circular cone being coaxially distributed is equipped in 3 lower end of second sleeve
Second narrowed portion 3a of shape.The coaxial distribution of the inner tube wall of second sleeve 3 and second sleeve 3 and axially through second sleeve 3 with
Second narrowed portion 3a.The horizontal cross-section of the inner tube wall of second sleeve 3 is the diameter that round and diameter is slightly larger than first sleeve 2.Make
Obtaining second sleeve 3 and the second narrowed portion 3a can be set on 2 outer wall of first sleeve, and can be axial next along first sleeve 2
Return sliding.The second sleeve 3 is an integral structure with the second narrowed portion 3a.
The length of the first sleeve 2 is greater than the length of second sleeve 3.So that 3 sets of second sleeve in first sleeve 2
Afterwards, the upper end of first sleeve 2 can stretch out the upper end of second sleeve 3, so that doctor can extract first set out out of second sleeve 3
Cylinder 2.
It is inserted with 3rd sleeve 4 on the outside of second sleeve 3, the circular cone being coaxially distributed is equipped in 4 lower end of 3rd sleeve
The third narrowed portion 4a of shape.The coaxial distribution of the inner tube wall of 3rd sleeve 4 and 3rd sleeve 4 and axially through 3rd sleeve 4 with
Third narrowed portion 4a.The horizontal cross-section of the inner tube wall of 3rd sleeve 4 is circle, and the diameter of 4 inner tube wall of 3rd sleeve is slightly larger than the
The diameter of two sleeves 3.3rd sleeve 4 and third narrowed portion 4a are set on 3 outer wall of second sleeve, and can edge
Second sleeve 3 is axial to slidably reciprocate.The 3rd sleeve 4 is an integral structure with third narrowed portion 4a.
The length of the second sleeve 3 is greater than the length of 3rd sleeve 4.So that after 4 sets of 3rd sleeve in second sleeve 3
The upper end of second sleeve 3 can stretch out the upper end of 3rd sleeve 4, so that doctor can extract second sleeve out out of 3rd sleeve 4
3。
It is inserted with 4th sleeve 5 on the outside of 3rd sleeve 4, the circular cone being coaxially distributed is equipped in 5 lower end of 4th sleeve
4th narrowed portion 5a of shape.The coaxial distribution of the inner tube wall of 4th sleeve 5 and 4th sleeve 5 and axially through 4th sleeve 5 with
4th narrowed portion 5a.The horizontal cross-section of the inner tube wall of the 4th sleeve 5 is circle, and the inner tube wall diameter of 4th sleeve 5 is bigger
In the diameter of 3rd sleeve 4.4th sleeve 5 and the 4th narrowed portion 5a are set on 4 outer wall of 3rd sleeve, and can
Axially to slidably reciprocate along 3rd sleeve 4.
The pointed tooth 5b of one group of triangle is evenly equipped on the lower end of the 4th narrowed portion 5a.In 5 upper end end of 4th sleeve
Fin 6 equipped with a pair of of horizontal distribution.Reinforcing rib 7 is additionally provided between every fin 6 and the outer wall of 4th sleeve 5.Described
Reinforcing rib 7 is triangular structure of right angle, and hook and the fin 6 of the reinforcing rib 7 are fixedly welded, the stock and the 4th of the reinforcing rib 7
The outer wall of sleeve 5 is fixedly welded, and the string of the reinforcing rib 7 is the arc 7a of indent.The 4th sleeve 5 and the 4th narrowed portion 5a
And pointed tooth 5b is an integral structure.The altitude scale 5c being distributed vertically is also portrayed on the inner wall of 4th sleeve 5.
The length of the 3rd sleeve 4 is greater than the length of 4th sleeve 5.So that after 5 sets of 4th sleeve in 3rd sleeve 4
The upper end of 3rd sleeve 4 can stretch out the upper end of 4th sleeve 5, so that doctor can extract 3rd sleeve out out of 4th sleeve 5
4。
The pedicle screw includes solid shank of screw 8 and staple seat 9, on the outer wall of 9 two sides of staple seat
Equipped with the cambered surface 9a with 5 inner wall corresponding matching of 4th sleeve, and the spacing between two cambered surface 9a arc tops is less than the 4th narrowed portion
The diameter of the lower end 5a.So that 4th sleeve can be removed after pedicle screw is placed in bone.
It is equipped with through-hole 12 in 9 bottom of staple seat, the inner wall of the through-hole 12 is equipped with cambered surface, in through-hole 12
It is inserted with solid shank of screw 8.It is equipped in cambered surface and is set there are two symmetrical arc chute 12a on the inner wall of through-hole 12,
The upper end of the arc chute 12a is equipped with opening, so that the sliding block 8c being mentioned below can be put into arc chute 12a.
It is equipped with the bulb 8a of the cambered surface corresponding matching cooperation on the inner wall with through-hole 12 on 8 top of shank of screw, in ball
It is linear type or cross or rectangular or hexagon that the top of head 8a, which is equipped with sagging locking slot 8b, the locking slot 8b,.
The bulb 8a is an integral structure with shank of screw 8, and the screw pitch on screw rod is wider.
The sliding block 8c of one section of arc distribution, and the cunning are respectively equipped on the spherical surface of the bulb 8a of the two sides locking slot 8b
It is also spaced between block 8c and locking slot 8b at regular intervals.In the sliding block 8c insertion arc chute 12a, and can be sliding in arc
Sliding in slot 12a, so that shank of screw 8 has the function of that arcuately sliding slot 12a is moved left and right.
It is equipped with compressing member 11 in the staple seat 9 on bulb 8a, is equipped with and 9 inner wall of staple seat on 11 outer wall of compressing member
The screw thread of corresponding matching is equipped with the spherical groove 11b that can be provide with the upper end bulb 8a in 11 bottom of compressing member.
It is equipped on the slot bottom of spherical groove 11b straight with relief hole 11a, the relief hole 11a of the locking slot 8b to cooperation
Diameter is greater than the diameter of locking slot 8b, and the relief hole 11a is hexagon, is equipped with and bulb 8a corresponding matching at lower ending opening
Spherical surface.
It is connected with empennage 9b on 9 two sides outer wall top of staple seat, in empennage 9b and 9 two sides outer wall top of staple seat
Junction be equipped with groove 9c.Gland 9d is equipped in staple seat 9 above compressing member 11, on the gland 9d periphery
Equipped with the screw thread with 9 two sides inner wall corresponding matching of staple seat, gland locking slot 9e is equipped on gland 9d.The gland locking
Diameter of the diameter of slot 9e greatly with relief hole 11a, and diameter of the diameter of relief hole 11a greatly with locking slot 8b.
The structure of guiding device in embodiment 3 is identical as in Examples 1 and 2, and pedicle screw and guiding device
Matching relationship is same, therefore does not have to draw schematic diagram when embodiment 3 is placed in screw again in attached drawing, and those skilled in the art ask
Understood referring to Fig. 3 and 4.
Embodiment 4:
As described in Fig. 1,2 and Figure 11, a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument, it includes pedicle screw and corresponding cooperation
Merging guiding device, the merging guiding device includes guide post 1, is equipped with the circle that is coaxially distributed in the lower end of guide post 1
The narrowed portion 1b of taper is equipped with central through hole 1a along axis on guide post 1 and narrowed portion 1b.The guide post 1 and narrowed portion 1b
It is an integral structure.
It is inserted with first sleeve 2 on the outside of guide post 1, is equipped with the cone being coaxially distributed in 2 lower end of first sleeve
First narrowed portion 2a.The inner tube wall of first sleeve 2 is with the coaxial distribution of first sleeve 2 and axially through first sleeve 2 and first
Narrowed portion 2a.The horizontal cross-section of the inner tube wall of the first sleeve 2 is circle, and diameter is slightly larger than the diameter of guide post 1.So that the
One sleeve 2 and the first narrowed portion 2a can be set on 1 outer wall of guide post, and can axially be slidably reciprocated along guide post 1.Described
One sleeve 2 is an integral structure with the first narrowed portion 2a.
The length of the guide post 1 is greater than the length of first sleeve 2.So that after 2 sets of first sleeve on guide post 1, guide post 1
Upper end can stretch out the upper end of first sleeve 2, so that doctor extracts guide post 1 out.
It is inserted with second sleeve 3 on the outside of first sleeve 2, the circular cone being coaxially distributed is equipped in 3 lower end of second sleeve
Second narrowed portion 3a of shape.The coaxial distribution of the inner tube wall of second sleeve 3 and second sleeve 3 and axially through second sleeve 3 with
Second narrowed portion 3a.The horizontal cross-section of the inner tube wall of second sleeve 3 is the diameter that round and diameter is slightly larger than first sleeve 2.Make
Obtaining second sleeve 3 and the second narrowed portion 3a can be set on 2 outer wall of first sleeve, and can be axial next along first sleeve 2
Return sliding.The second sleeve 3 is an integral structure with the second narrowed portion 3a.
The length of the first sleeve 2 is greater than the length of second sleeve 3.So that 3 sets of second sleeve in first sleeve 2
Afterwards, the upper end of first sleeve 2 can stretch out the upper end of second sleeve 3, so that doctor can extract first set out out of second sleeve 3
Cylinder 2.
It is inserted with 3rd sleeve 4 on the outside of second sleeve 3, the circular cone being coaxially distributed is equipped in 4 lower end of 3rd sleeve
The third narrowed portion 4a of shape.The coaxial distribution of the inner tube wall of 3rd sleeve 4 and 3rd sleeve 4 and axially through 3rd sleeve 4 with
Third narrowed portion 4a.The horizontal cross-section of the inner tube wall of 3rd sleeve 4 is circle, and the diameter of 4 inner tube wall of 3rd sleeve is slightly larger than the
The diameter of two sleeves 3.3rd sleeve 4 and third narrowed portion 4a are set on 3 outer wall of second sleeve, and can edge
Second sleeve 3 is axial to slidably reciprocate.The 3rd sleeve 4 is an integral structure with third narrowed portion 4a.
The length of the second sleeve 3 is greater than the length of 3rd sleeve 4.So that after 4 sets of 3rd sleeve in second sleeve 3
The upper end of second sleeve 3 can stretch out the upper end of 3rd sleeve 4, so that doctor can extract second sleeve out out of 3rd sleeve 4
3。
It is inserted with 4th sleeve 5 on the outside of 3rd sleeve 4, the circular cone being coaxially distributed is equipped in 5 lower end of 4th sleeve
4th narrowed portion 5a of shape.The coaxial distribution of the inner tube wall of 4th sleeve 5 and 4th sleeve 5 and axially through 4th sleeve 5 with
4th narrowed portion 5a.The horizontal cross-section of the inner tube wall of the 4th sleeve 5 is circle, and the inner tube wall diameter of 4th sleeve 5 is bigger
In the diameter of 3rd sleeve 4.4th sleeve 5 and the 4th narrowed portion 5a are set on 4 outer wall of 3rd sleeve, and can
Axially to slidably reciprocate along 3rd sleeve 4.
The pointed tooth 5b of one group of triangle is evenly equipped on the lower end of the 4th narrowed portion 5a.In 5 upper end end of 4th sleeve
Fin 6 equipped with a pair of of horizontal distribution.Reinforcing rib 7 is additionally provided between every fin 6 and the outer wall of 4th sleeve 5.Described
Reinforcing rib 7 is triangular structure of right angle, and hook and the fin 6 of the reinforcing rib 7 are fixedly welded, the stock and the 4th of the reinforcing rib 7
The outer wall of sleeve 5 is fixedly welded, and the string of the reinforcing rib 7 is the arc 7a of indent.The 4th sleeve 5 and the 4th narrowed portion 5a
And pointed tooth 5b is an integral structure.The altitude scale 5c being distributed vertically is also portrayed on the inner wall of 4th sleeve 5.
The length of the 3rd sleeve 4 is greater than the length of 4th sleeve 5.So that after 5 sets of 4th sleeve in 3rd sleeve 4
The upper end of 3rd sleeve 4 can stretch out the upper end of 4th sleeve 5, so that doctor can extract 3rd sleeve out out of 4th sleeve 5
4。
The pedicle screw includes solid shank of screw 8 and staple seat 9.One is equipped at the top of the shank of screw 8
Body formed coniform head of a nail 8a is equipped with pedicle screw locking slot 10 on the top coniform head of a nail 8a.
It is equipped with conical bore 13 with coniform head of a nail 8a corresponding matching in 9 bottom of staple seat, enables coniform head of a nail 8a
It is stuck in conical bore 13, at this moment shank of screw 8 and the formation of conical bore 13 rotate coaxially cooperation.Conical bore 13 is avoided that the coniform head of a nail
8a may insure staple seat 9 and 8 relative rotation of shank of screw from wherein leaking out again.
The cambered surface 9a with 5 inner wall corresponding matching of 4th sleeve, and two arcs are equipped on the outer wall of 9 two sides of staple seat
The diameter of spacing between the 9a arc top of face less than the 4th lower end narrowed portion 5a.To be moved after pedicle screw is placed in bone
Except 4th sleeve.
It is connected with empennage 9b on 9 two sides outer wall top of staple seat, in empennage 9b and 9 two sides outer wall top of staple seat
Junction be equipped with groove 9c.The groove 9c is that its center of circle of arc-shaped slot is identical as the center of circle of cambered surface 9a.
Gland 9d is equipped in staple seat 9, the gland 9d periphery is equipped with corresponding with 9 two sides inner wall of staple seat
The screw thread of cooperation.Gland locking slot 9e is equipped on gland 9d.The diameter of the gland locking slot 9e is locked greater than pedicle screw
The diameter of tight slot 10.
Embodiment described above is only several preferred embodiments of the invention, is not intended to limit patent model of the invention
It encloses, it is all using equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, directly or indirectly transport
Used in other related technical areas, it is included within the scope of the present invention.
Use process:
It uses trochar in the prior art first at the time of surgery, patient body is punctured, so that needle core reaches vertebral arch
Root, and casing is also together in insertion body, then extracts needle core out, it is then that seal wire is inserted into the patient from one end casing, and it is inserted into vertebra
Surgery location is marked in nut, finally again removes casing.The trochar includes needle core and the casing that is set in outside needle core,
Its structure is chatted since it is that the prior art is therefore no longer superfluous here.
Then, it is flared at the skin openings stayed with opener to removal casing using operation in the prior art.And
Seal wire upper end is inserted into again from the central through hole of guide post afterwards, so that guide post is through on seal wire, then narrowed portion is downwardly into trouble
In person's body, until narrowed portion lower end reaches pedicle of vertebral arch, the first, second, third and fourth sleeve is then worn step by step outside guide post, so that the
One, the lower end of two, three, four narrowed portion reaches pedicle of vertebral arch.(the first, second, third and fourth conical narrowed portion is also convenient for insertion skin
Skin enters patient's body)
Since the diameter of the first, second, third and fourth sleeve is gradually increased, so by wearing the first, second, third and fourth sleeve step by step
The soft tissue of body is expanded.After the 4th narrowed portion lower end reaches pedicle of vertebral arch, hold 4th sleeve, tiger's jaw portion and arc plus
The string of strengthening tendons 7 contacts, thus 4th sleeve of holding with a firm grip.It reuses hand hammer and taps fin, the pointed tooth of the 4th narrowed portion lower end is followed closely
Enter on the sclerotin of pedicle of vertebral arch.
It then extracts seal wire, guide post, the first, second and third sleeve out step by step from inside to outside, is then solid state by shank of screw
Pedicle screw is inserted into the inner tube wall of 4th sleeve, and at this moment pedicle screw can be in the guidance of the inner tube wall of 4th sleeve
Under, fall directly on surgery location, then by specific purpose tool (specific purpose tool be existing pedicle screw T-type spanner,
Extend in pedicle screw T-type spanner one end and form mating plug division with the locking slot of pedicle screw), by screw
Bar is that shank of screw (is first screwed in vertebral arch by specific purpose tool in example 2 by the pedicle screw screw-in pedicle of vertebral arch of solid state
Compressing member screw-in is then pressed against on bulb by root again), connecting rod is placed in two then adjacent staple seats, and uses gland
The both ends of connecting rod are locked at respectively in the staple seat of corresponding pedicle screw, the docking wing is then broken by groove, are completed
The connection of two pedicle screws.
In addition, can also be by between observation empennage upper end and scale during pedicle screw is screwed in pedicle of vertebral arch
Change in location accurately grasps the depth of pedicle screw screw-in.
By the technical program, shank of screw is allowed to be that the pedicle screw of solid state applies in Minimally Invasive Surgery,
Because the application provides the accurate operating walk way for reaching surgery location for shank of screw for the pedicle screw of solid state.Due to
Shank of screw is that the pedicle screw intensity of solid state is larger, because that can follow closely the broken nail phenomenon of body with screw, reduces the operation of patient
Wound, reduces the complication of operation, so that the quick recovery speed of operation greatly improved.
Since the guidance of the inner tube wall of 4th sleeve also avoids that pedicle screw is revolved to askew situation generation, pole in operation
The big success rate for promoting pedicle screw merging, shortens operating time, the operating difficulty for reducing doctor, refers to perform the operation
Success rate.
Guiding device in the application can also be used cooperatively with the solid pedicle screw occurred in the prior art.
Claims (5)
1. a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument, it is characterised in that: it includes the merging of pedicle screw and corresponding cooperation
Guiding device, the merging guiding device include guide post (1), central through hole (1a) are equipped on guide post (1), in guide post (1)
On be arranged with first sleeve (2), second sleeve (3) are arranged in first sleeve (2), are arranged with third on second sleeve (3)
Sleeve (4) is arranged with 4th sleeve (5) on 3rd sleeve (4), is equipped with a pair of of fin in 4th sleeve (5) upper end end
(6), one group of pointed tooth (5b) is equipped in 4th sleeve (5) lower end；The pedicle screw includes solid shank of screw
(8), staple seat (9) are connected in shank of screw (8) upper end, are equipped with and 4th sleeve (5) inner wall pair on staple seat (9) outer wall
The cambered surface (9a) that should cooperate is connected with empennage (9b) on (9) two wall top of staple seat, in empennage (9b) and staple seat
The junction on (9) two wall tops is equipped with groove (9c).
2. a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument according to claim 1, it is characterised in that: the guide post (1)
Lower end is equipped with taper narrowed portion (1b), the first narrowed portion (2a) is equipped in the lower end of first sleeve (2), in second sleeve
(3) lower end is equipped with the second narrowed portion (3a), third narrowed portion (4a) is equipped in the lower end of 3rd sleeve (4), the 4th
The lower end of sleeve (5) is equipped with the 4th narrowed portion (5a).
3. a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument according to claim 1, it is characterised in that: in the fin (6)
Reinforcing rib (7) are additionally provided between 4th sleeve (5).
4. a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument according to claim 1, it is characterised in that: in the staple seat
(9) bottom is equipped with through-hole (12), and through-hole (12) inner wall is equipped with cambered surface, is arranged with shank of screw (8), In in through-hole (12)
Shank of screw (8) top is equipped with the bulb (8a) cooperated with cambered surface corresponding matching, is equipped with locking slot (8b) on bulb (8a),
It is equipped with the compressing member (11) of corresponding matching in staple seat (9) on bulb (8a), is equipped on compressing member (11) outer wall and U
The screw thread of staple seat (9) inner wall corresponding matching is equipped with relief hole corresponding with locking slot (8b) on compressing member (11)
(11a).
5. a kind of pedicle of vertebral arch Minimally Invasive Surgery instrument according to claim 1, it is characterised in that: in the staple seat
(9) bottom is equipped with and is made into integration shank of screw (8), and in staple seat (9), internal screw thread is connected with gland (9d), sets on gland (9d)
There is locking hole (12a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789787.7A CN110432963A (en) | 2019-08-26 | 2019-08-26 | A kind of pedicle of vertebral arch Minimally Invasive Surgery instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910789787.7A CN110432963A (en) | 2019-08-26 | 2019-08-26 | A kind of pedicle of vertebral arch Minimally Invasive Surgery instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110432963A true CN110432963A (en) | 2019-11-12 |
Family
ID=68437603
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910789787.7A Pending CN110432963A (en) | 2019-08-26 | 2019-08-26 | A kind of pedicle of vertebral arch Minimally Invasive Surgery instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112089486A (en) * | 2020-09-01 | 2020-12-18 | 徐州丹奕工程科技有限公司 | Pedicle screw tail tooth breaker structure capable of reducing injury |
-
2019
- 2019-08-26 CN CN201910789787.7A patent/CN110432963A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112089486A (en) * | 2020-09-01 | 2020-12-18 | 徐州丹奕工程科技有限公司 | Pedicle screw tail tooth breaker structure capable of reducing injury |
| CN112089486B (en) * | 2020-09-01 | 2021-06-15 | 吉林大学 | Pedicle screw tail tooth breaker structure capable of reducing injury |
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