CN105476704A - Anterior cervical plate fixation system - Google Patents
Anterior cervical plate fixation system Download PDFInfo
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- CN105476704A CN105476704A CN201510947530.1A CN201510947530A CN105476704A CN 105476704 A CN105476704 A CN 105476704A CN 201510947530 A CN201510947530 A CN 201510947530A CN 105476704 A CN105476704 A CN 105476704A
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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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/808—Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/809—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with bone-penetrating elements, e.g. blades or prongs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
- A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
Abstract
The invention discloses an anterior cervical plate fixation system, which is used for treating cervical vertebra in a mode of pre-fixation, and belongs to the technical field of medical apparatus. The fixation system comprises an anterior cervical plate and screws, wherein screw hole groups, which are distributed in a mode of being mutually parallel in a plurality of lines, are formed in the anterior cervical plate; the screw hole group in each line includes two adjacent screw holes; and the screws are arranged in the screw holes; the fixation system is characterized by further comprising pressing sheets, wherein the integral pressing sheets are of dual-U shaped structures which are formed with openings in two sides; a groove, which is matched with the corresponding pressing sheet, is formed between the two adjacent screw holes; the pressing sheets are arranged in the grooves; and the heads of the screws can be clamped by the openings in two sides of the pressing sheets. The fixation system disclosed by the invention has the advantages of simple structure, convenient operation, rapid fixation, being safe and reliable.
Description
Technical field
The present invention relates to a kind of anterior locking cervical plate system, for carrying out front fixed form treatment to cervical vertebra, belonging to technical field of medical instruments.
Background technology
Anterior cervical vertebrae simple bone graft merges because On graft area lacks reliable stabilizing measures, easy generation plant bone mass comes off, bone grafting disunion or delayed union or pseudoarticulation formation, the pseudarthrosis incidence rate of anterior cervical decompression bone-graft fusion is high, and the pseudarthrosis incidence rate of the bone-graft fusion of multi-segmental is higher, become a puzzlement clinicist's difficult problem.
The appearance of anterior plate fixation, be not only clinical and provide good fixing means, a stable support is provided for Cervical anterior fusion, shortens plant bone mass time of fusion, improves fusion rate, Delayed onset cervical kyphosis can also be prevented and keep cervical vertebrae height.Use anterior plate fixation cervical vertebra to be carried out to the technology of front fixed form treatment, be widely used in the clinical treatments such as intervertebral disc disorder, wound, tumor, deformity, pseudarthrosis.Anterior plate fixation uses screw to be fixed, but after having performed the operation, screw easily produces and loosens and exit anterior plate fixation, cause operative failure even threat to life, bring patient and have a strong impact on, existing screw lock mode after screw is fixing, is screwed into other screws again or locks by modes such as snap rings, not only increases operating procedure, and lock unreliable, there is potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention is to provide simple, easy to operate, fixing, the safe and reliable fast anterior locking cervical plate system of a kind of structure.
The present invention's adopted technical scheme that solves the problem is: this fixed system comprises anterior plate fixation and screw, anterior plate fixation is provided with the screw hole group of some row layout parallel to each other, often row screw hole group is made up of the screw hole of two next-door neighbours, screw is arranged in screw hole, it is characterized in that: also comprise clamping piece, clamping piece entirety is in dual U-shaped, its both sides are provided with opening, the groove matched with clamping piece is provided with between the screw hole of described two next-door neighbours, clamping piece is arranged in groove, and the opening of clamping piece both sides can clamp the head of screw.
Screw of the present invention is that self tapping is from the fixed angle screw of boring or angle adjustable screw.
The present invention is when screw is fixed angle screw, and at the longitudinal surface of anterior plate fixation, the angle between the axis of screw and the vertical line of screw place plane is 7 ° or ﹣ 7 °; At the athwartship plane of anterior plate fixation, the angle between the axis of screw and the vertical line of screw place plane is 8 ° or ﹣ 8 °.
The present invention is when screw is angle adjustable screw, and at the longitudinal surface of anterior plate fixation, the angle between the axis of screw and the vertical line of screw place plane can adjust between ﹣ 8 ° to 6 °, ﹣ 2 ° to 10 °, ﹣ 6 ° to 8 ° or ﹣ 10 ° to 2 °; At the athwartship plane of anterior plate fixation, the angle between the axis of screw and the vertical line of screw place plane can adjust between 0 ° to 8 ° or ﹣ 8 ° to 0 °.
The quantity of screw hole group of the present invention is two groups, three groups, four groups or five groups.
Anterior plate fixation of the present invention is provided with window between adjacent screw hole group, and window is rectangle.
The thickness of anterior plate fixation of the present invention is 2 to 4mm.
The present invention compared with prior art, there is following beneficial effect: 1, this fixed system structure is simple, some row screw hole groups are provided with at anterior plate fixation, often row screw hole group is made up of two screw holes, self tapping self-drilling screw is arranged in screw hole, screw can adopt fixed angle screw or angle adjustable screw according to the different situations of patient, screw hole is eccentric orfice, angle between two screws in every row screw hole group can be regulated within the specific limits, the adjustable-angle of screw extensively makes the adaptability of screw strengthen, for operation is provided convenience, and produce relative motion during screw placement and between anterior plate fixation and can play the effect that plant bone mass is pressurizeed, pressure energy is added to plant bone mass and promotes bone-graft fusion, 2, after anterior plate fixation fixed by screw, the angle between each screw and cervical vertebrae physiological radian are that a parabola changes, and meet " tension band " principle of internal fixtion like this, are more conducive to the fusion of plant bone mass, 3, this fixed system comprises the clamping piece in dual U-shaped, screw in after in screw hole at screw, namely the opening of clamping piece clamps the head of screw, play the effect of compression two screws, the intrinsic stability of screw depends primarily on how compacted it is, and anterior plate fixation and screw can join together by good compression very effectively, the fatigue fracture at screw hole place is effectively reduced, this clamping piece compresses reliable, not easily deformation failure, and clinical manipulation is very convenient, 4, anterior plate fixation is provided with rectangular window according to the physiologic radian of each vertebral body and length, and anterior plate fixation is the low incisura pre-bending steel plate matched with the physiological camber of cervical vertebra, can effectively avoid load distribution uneven, the unequal problem of stress distribution, anterior plate fixation will produce bone grafting and press effect simultaneously, the width of steel plate and thickness need be suitable for, wide, often need to cut longus colli, narrow, except not playing fixation, also plant bone mass may be had influence on, although the mechanical property of thicker steel plate is good, but swallow sense of discomfort owing to causing after operation in patients, so the thickness of steel plate should be on the basis meeting mechanical requirements, thinner as much as possible, anterior plate fixation thickness in this fixed system is 2 to 4mm.
Accompanying drawing explanation
Fig. 1 is the front view of embodiment 1.
Fig. 2 is the top view of embodiment 1.
Fig. 3 is the axonometric chart of embodiment 1.
Fig. 4 is the axonometric chart of anterior plate fixation in embodiment 1.
Fig. 5 is the axonometric chart of clamping piece in embodiment 1.
Fig. 6 is the A-A sectional view of Fig. 2.
Fig. 7 is the B-B sectional view of Fig. 2.
Fig. 8 is the C-C sectional view of Fig. 2.
Fig. 9 is schematic diagram when screw is arranged in anterior plate fixation in embodiment 1.
Figure 10 is I place's enlarged drawing of Fig. 9.
Figure 11 is the schematic diagram of embodiment 1 when being applied to neck.
Figure 12 is II place's enlarged drawing of Figure 11.
Figure 13 is the top view of embodiment 2.
Figure 14 is the D-D sectional view of Figure 13.
Figure 15 is the E-E sectional view of Figure 13.
Figure 16 is the F-F sectional view of Figure 13.
Figure 17 is schematic diagram when screw is arranged in anterior plate fixation in embodiment 2.
Figure 18 is III place's enlarged drawing of Figure 17.
Figure 19 is the front view of embodiment 3.
Figure 20 is the top view of embodiment 3.
Figure 21 is the axonometric chart of embodiment 3.
Figure 22 is the axonometric chart of anterior plate fixation in embodiment 3.
Figure 23 is the axonometric chart of clamping piece in embodiment 3.
Figure 24 is the G-G sectional view of Figure 20.
Figure 25 is the H-H sectional view of Figure 20.
Figure 26 is the I-I sectional view of Figure 20.
Figure 27 is the schematic diagram of embodiment 3 when being applied to neck.
Figure 28 is IV place's enlarged drawing of Figure 27.
Figure 29 is the top view of embodiment 4.
Figure 30 is the J-J sectional view of Figure 29.
Figure 31 is the K-K sectional view of Figure 29.
Figure 32 is the L-L sectional view of Figure 29.
Figure 33 is the front view of embodiment 5.
Figure 34 is the top view of embodiment 5.
Figure 35 is the axonometric chart of embodiment 5.
Figure 36 is the axonometric chart of anterior plate fixation in embodiment 5.
Figure 37 is the axonometric chart of clamping piece in embodiment 5.
Figure 38 is the M-M sectional view of Figure 34.
Figure 39 is the N-N sectional view of Figure 34.
Figure 40 is the O-O sectional view of Figure 34.
Figure 41 is the schematic diagram of embodiment 5 when being applied to neck.
Figure 42 is V place's enlarged drawing of Figure 41.
Figure 43 is the top view of embodiment 6.
Figure 44 is the P-P sectional view of Figure 43.
Figure 45 is the Q-Q sectional view of Figure 43.
Figure 46 is the R-R sectional view of Figure 43.
Figure 47 is the front view of embodiment 7.
Figure 48 is the top view of embodiment 7.
Figure 49 is the axonometric chart of embodiment 7.
Figure 50 is the axonometric chart of anterior plate fixation in embodiment 7.
Figure 51 is the axonometric chart of clamping piece in embodiment 7.
Figure 52 is the S-S sectional view of Figure 48.
Figure 53 is the T-T sectional view of Figure 48.
Figure 54 is the U-U sectional view of Figure 48.
Figure 55 is the schematic diagram of embodiment 7 when being applied to neck.
Figure 56 is VI place's enlarged drawing of Figure 55.
Figure 57 is the top view of embodiment 8.
Figure 58 is the V-V sectional view of Figure 57.
Figure 59 is the W-W sectional view of Figure 57.
Figure 60 is the X-X sectional view of Figure 57.
Detailed description of the invention
Embodiment 1:
See Fig. 1-Fig. 5, the present embodiment comprises anterior plate fixation 1, screw 2 and clamping piece 4.The thickness of anterior plate fixation 1 is 2mm, which is provided with the screw hole group of two row layout parallel to each other, and often row screw hole group is made up of the screw hole 3 of two next-door neighbours, and screw 2 is arranged in screw hole 3; Anterior plate fixation 1 is provided with window 7 between adjacent screw hole group, and window 7 is rectangle.Clamping piece 4 entirety is in dual U-shaped, its both sides are provided with opening 6, be provided with the groove 5 matched with clamping piece 4 shape size between the screw hole 3 that often in row screw hole group, two are close to, clamping piece 4 is arranged in groove 5, and the opening 6 of clamping piece 4 both sides can clamp the ailhead 21 of screw 2.
See Fig. 6-Figure 10, screw 2 is fixed angle screw, connecting portion 23 between ailhead 21 and rivet nut 22 is cylinder design, after screw hole 3 put into by screw 2, connecting portion 23 fits with the inwall of screw hole 3, the axis of screw 2 and the axis of screw hole 3 are on the same line, and screw 2 cannot adjust angle again.At the longitudinal surface of anterior plate fixation 1, angle between the axis alpha of screw 2 and the vertical line β of this longitudinal surface place plane (plane at the A-A section namely in Fig. 2 and B-B section place) is that 7 ° or ﹣ 7 ° (clockwise turn to negative, be rotated counterclockwise as just, lower with); At the athwartship plane of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line γ (plane at the C-C section place namely in Fig. 2) of this athwartship plane place plane is 8 ° or ﹣ 8 °.
See Figure 11 and Figure 12, during use, screw 2 is screwed into cervical vertebra in the screw hole 3 of anterior plate fixation 1, anterior plate fixation 1 is fixed on cervical vertebra, when the head of screw 2 enters in the opening 6 of clamping piece 4, namely the opening 6 of clamping piece 4 clamps the ailhead 21 of screw 2, is fixed by screw 2, prevents it from loosening, comes off.
Embodiment 2:
See Figure 13-Figure 18, in the present embodiment, screw 2 is angle adjustable screw, connecting portion 23 between ailhead 21 and rivet nut 22 is the cambered surface design of indent, after screw hole 3 put into by screw 2, do not fit between rivet nut connecting portion 23 and the inwall of screw hole 3 and contact, screw 2 can adjust angle within the scope of certain angle.At the longitudinal surface of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line β of this longitudinal surface place plane (plane at the D-D section namely in Figure 13 and E-E section place) can adjust between-8 ° to 6 ° or ﹣ 6 ° to 8 °; At the athwartship plane of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line γ (plane at the F-F section place namely in Figure 13) of this athwartship plane place plane can adjust between 0 ° to 8 ° or ﹣ 8 ° to 0 °.
All the other structures of the present embodiment are identical with embodiment 1 with using method.
Embodiment 3:
See Figure 19-Figure 23, the present embodiment comprises anterior plate fixation 1, screw 2 and clamping piece 4.The thickness of anterior plate fixation 1 is 3mm, which is provided with the screw hole group of three row layout parallel to each other, and often row screw hole group is made up of the screw hole 3 of two next-door neighbours, and screw 2 is arranged in screw hole 3; Anterior plate fixation 1 is provided with window 7 between adjacent screw hole group, and window 7 is rectangle.Clamping piece 4 entirety is in dual U-shaped, its both sides are provided with opening 6, be provided with the groove 5 matched with clamping piece 4 shape size between the screw hole 3 that often in row screw hole group, two are close to, clamping piece 4 is arranged in groove 5, and the opening 6 of clamping piece 4 both sides can clamp the ailhead 21 of screw 2.
See Figure 24-Figure 26, screw 2 is the fixed angle screw identical with embodiment 1, and the axis of screw 2 and the axis of screw hole 3 are on the same line, and screw 2 cannot adjust angle again in screw hole 3.At the longitudinal surface of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line β of this longitudinal surface place plane (plane at the G-G section namely in Figure 20 and H-H section place) is 7 ° or ﹣ 7 °; At the athwartship plane of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line γ (plane at the I-I section place namely in Figure 20) of this athwartship plane place plane is 8 ° or ﹣ 8 °.
See Figure 27 and Figure 28, the using method of the present embodiment is identical with embodiment 1.
Embodiment 4:
See Figure 29-Figure 32, the screw 2 in the present embodiment is the angle adjustable screw identical with embodiment 2, and screw 2 can adjust angle in screw hole 3 within the scope of certain angle.At the longitudinal surface of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line β of this longitudinal surface place plane (plane at the J-J section namely in Figure 29 and K-K section place) can adjust between ﹣ 8 ° to 6 °, ﹣ 2 ° to 10 °, ﹣ 6 ° to 8 ° or ﹣ 10 ° to 2 °; At the athwartship plane of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line γ (plane at the L-L section place namely in Figure 29) of this athwartship plane place plane can adjust between 0 ° to 8 ° or ﹣ 8 ° to 0 °.
All the other structures of the present embodiment are identical with embodiment 3 with using method.
Embodiment 5:
See Figure 33-Figure 37, the present embodiment comprises anterior plate fixation 1, screw 2 and clamping piece 4.The thickness of anterior plate fixation 1 is 4mm, which is provided with the screw hole group of four row layout parallel to each other, and often row screw hole group is made up of the screw hole 3 of two next-door neighbours, and screw 2 is arranged in screw hole 3; Anterior plate fixation 1 is provided with window 7 between adjacent screw hole group, and window 7 is rectangle.Clamping piece 4 entirety is in dual U-shaped, its both sides are provided with opening 6, be provided with the groove 5 matched with clamping piece 4 shape size between the screw hole 3 that often in row screw hole group, two are close to, clamping piece 4 is arranged in groove 5, and the opening 6 of clamping piece 4 both sides can clamp the ailhead 21 of screw 2.
See Figure 38-Figure 40, screw 2 is the fixed angle screw identical with embodiment 1, and the axis of screw 2 and the axis of screw hole 3 are on the same line, and screw 2 cannot adjust angle again in screw hole 3.At the longitudinal surface of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line β of this longitudinal surface place plane (plane at the M-M section namely in Figure 34 and N-N section place) is ﹢ 7 ° or ﹣ 7 °; At the athwartship plane of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line γ (plane at the O-O section place namely in Figure 34) of this athwartship plane place plane is ﹢ 8 ° or ﹣ 8 °.
See Figure 41 and Figure 42, the using method of the present embodiment is identical with embodiment 1.
Embodiment 6:
See Figure 43-Figure 46, the screw 2 in the present embodiment is the angle adjustable screw identical with embodiment 2, and screw 2 can adjust angle in screw hole 3 within the scope of certain angle.At the longitudinal surface of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line β of this longitudinal surface place plane (plane at the P-P section namely in Figure 43 and Q-Q section place) can adjust between ﹣ 8 ° to 6 °, ﹣ 2 ° to 10 °, ﹣ 6 ° to 8 ° or ﹣ 10 ° to 2 °; At the athwartship plane of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line γ (plane at the R-R section place namely in Figure 43) of this athwartship plane place plane can adjust between ﹢ 8 ° to 0 ° or ﹣ 8 ° to 0 °.
All the other structures of the present embodiment are identical with embodiment 5 with using method.
Embodiment 7:
See Figure 47-Figure 51, the present embodiment comprises anterior plate fixation 1, screw 2 and clamping piece 4.The thickness of anterior plate fixation 1 is 3mm, which is provided with the screw hole group of five row layout parallel to each other, and often row screw hole group is made up of the screw hole 3 of two next-door neighbours, and screw 2 is arranged in screw hole 3; Anterior plate fixation 1 is provided with window 7 between adjacent screw hole group, and window 7 is rectangle.Clamping piece 4 entirety is in X-shaped, its both sides are provided with opening 6, be provided with the groove 5 matched with clamping piece 4 shape size between the screw hole 3 that often in row screw hole group, two are close to, clamping piece 4 is arranged in groove 5, and the opening 6 of clamping piece 4 both sides can clamp the ailhead 21 of screw 2.
See Figure 52-Figure 54, screw 2 is the fixed angle screw identical with embodiment 1, and the axis of screw 2 and the axis of screw hole 3 are on the same line, and screw 2 cannot adjust angle again in screw hole 3.At the longitudinal surface of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line β of this longitudinal surface place plane (plane at the S-S section namely in Figure 48 and T-T section place) is ﹢ 7 ° or ﹣ 7 °; At the athwartship plane of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line γ (plane at the U-U section place namely in Figure 48) of this athwartship plane place plane is ﹢ 8 ° or ﹣ 8 °.
See Figure 55 and Figure 56, the using method of the present embodiment is identical with embodiment 1.
Embodiment 8:
See Figure 57-Figure 60, the screw 2 in the present embodiment is the angle adjustable screw identical with embodiment 2, and screw 2 can adjust angle in screw hole 3 within the scope of certain angle.At the longitudinal surface of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line β of this longitudinal surface place plane (plane at the V-V section namely in Figure 57 and W-W section place) can adjust between ﹣ 8 ° to 6 °, ﹣ 2 ° to 10 °, ﹣ 6 ° to 8 ° or ﹣ 10 ° to 2 °; At the athwartship plane of anterior plate fixation 1, the angle between the axis alpha of screw 2 and the vertical line γ (plane at the X-X section place namely in Figure 57) of this athwartship plane place plane can adjust between ﹢ 8 ° to 0 ° or ﹣ 8 ° to 0 °.
All the other structures of the present embodiment are identical with embodiment 7 with using method.
Claims (7)
1. an anterior locking cervical plate system, comprise anterior plate fixation and screw, anterior plate fixation is provided with the screw hole group of some row layout parallel to each other, often row screw hole group is made up of the screw hole of two next-door neighbours, screw is arranged in screw hole, it is characterized in that: also comprise clamping piece, clamping piece entirety is in dual U-shaped, its both sides are provided with opening, the groove matched with clamping piece is provided with between the screw hole of described two next-door neighbours, clamping piece is arranged in groove, and the opening of clamping piece both sides can clamp the head of screw.
2. anterior locking cervical plate system according to claim 1, is characterized in that: described screw is that self tapping is from the fixed angle screw of boring or angle adjustable screw.
3. anterior locking cervical plate system according to claim 1 and 2, is characterized in that: when screw is fixed angle screw, at the longitudinal surface of anterior plate fixation, and the angle between the axis of screw and the vertical line of screw place plane is 7 ° or ﹣ 7 °; At the athwartship plane of anterior plate fixation, the angle between the axis of screw and the vertical line of screw place plane is 8 ° or ﹣ 8 °.
4. anterior locking cervical plate system according to claim 1 and 2, it is characterized in that: when screw is angle adjustable screw, at the longitudinal surface of anterior plate fixation, the angle between the axis of screw and the vertical line of screw place plane can adjust between ﹣ 8 ° to 6 °, ﹣ 2 ° to 10 °, ﹣ 6 ° to 8 ° or ﹣ 10 ° to 2 °; At the athwartship plane of anterior plate fixation, the angle between the axis of screw and the vertical line of screw place plane can adjust between 0 ° to 8 ° or ﹣ 8 ° to 0 °.
5. anterior locking cervical plate system according to claim 1, is characterized in that: the quantity of described screw hole group is two groups, three groups, four groups or five groups.
6. anterior locking cervical plate system according to claim 1 or 5, is characterized in that: described anterior plate fixation is provided with window between adjacent screw hole group, and window is rectangle.
7. anterior locking cervical plate system according to claim 1, is characterized in that: the thickness of described anterior plate fixation is 2 to 4mm.
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| CN201510947530.1A CN105476704B (en) | 2015-12-17 | 2015-12-17 | Anterior locking cervical plate system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123433A (en) * | 2019-05-15 | 2019-08-16 | 山东新华联合骨科器材股份有限公司 | A kind of internal fixing system for anterior cervical vertebrae |
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| Publication number | Publication date |
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| CN105476704B (en) | 2019-01-25 |
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Effective date of registration: 20180918 Address after: 324113 No. 20 Huiyuan Road, Shanhai cooperation area, Jiangshan Economic Development Zone, Quzhou, Zhejiang Applicant after: Zhejiang Kangci Medical Technology Co., Ltd. Address before: 324113 No. 20 Huiyuan Road, Shanhai cooperation area, Jiangshan Economic Development Zone, Quzhou, Zhejiang Applicant before: Zhou Jianming |
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