CN205683130U - A kind of novel combination type pedicle screw-rod locking system - Google Patents
A kind of novel combination type pedicle screw-rod locking system Download PDFInfo
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- CN205683130U CN205683130U CN201521088853.1U CN201521088853U CN205683130U CN 205683130 U CN205683130 U CN 205683130U CN 201521088853 U CN201521088853 U CN 201521088853U CN 205683130 U CN205683130 U CN 205683130U
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- spiral shell
- card cap
- shell card
- screw thread
- cap
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Abstract
The utility model discloses a kind of novel combination type pedicle screw-rod locking system, this novel combination type pedicle screw-rod locking system is made up of pedicle screw and rod, rod is cylindrical structural, pedicle screw includes that nail seat 1, rivet nut 2, ring seat 4, compressing member the 5, second spiral shell card cap 6 and the first spiral shell card cap 7, first spiral shell card cap the 7, second spiral shell card cap 6, compressing member 5, ring seat 4 are the most from top to bottom arranged in nail seat 1.This novel combination type pedicle screw-rod locking system, can eliminate the possibility that pedicle screw loosens with rod connecting portion from mechanics, increase coupling mechanism force, form a kind of more structurally sound pedicle screw-rod latch-up structure.
Description
Technical field
This utility model relates to medical spinal fixation system, particularly relates to be applied to the disease such as spinal fracture, spinal column regression
Sick internal fixation system.
Background technology
Treating the disease of some spinal columns, such as diseases such as spinal fracture, spinal column regressions, needing by pedicle nail bar system
Rebuilding the stability of spinal column, before spinal column rebuilds spinal stability itself by biology, pedicle nail bar system is in vivo
Bear the stress of various complexity.
In pedicle nail bar system, pedicle screw and rod are two independent parts, and each pedicle screw must lead to
Cross single tail cap in the way of screw thread pressurization, form the structure of a locking；When this latch-up structure bears various complexity in vivo
Under conditions of stress, there is loosening possibility, now, pedicle nail bar system is no longer a stable structure, interior fixing mistake
Effect, it is impossible to provide protection for not yet passing the spinal column of reconstruction of stability biology, a series of complication can be caused, such as vertebral region
The pain in territory, dysfunction, nerve and spinal cord injury etc..
Utility model content
The technical problems to be solved in the utility model is to provide a kind of novel combination type pedicle screw-rod locking system, its energy
Enough possibilities that elimination pedicle screw loosens with rod connecting portion from mechanics, form a kind of more structurally sound pedicle screw-rod
Latch-up structure.
For solving above-mentioned technical problem, this utility model provides following technical scheme:
A kind of novel combination type pedicle screw-rod locking system, is made up of pedicle screw and rod, and rod is cylindrical structural,
Pedicle screw includes nail seat 1, rivet nut 2, ring seat 4, compressing member the 5, second spiral shell card cap 6 and the first spiral shell card cap 7, the first spiral shell card cap
7, the second spiral shell card cap 6, compressing member 5, ring seat 4 are the most from top to bottom arranged in nail seat 1.
Nail seat 1 is hollow cylindrical structure, including upper threaded portion 11, lower threaded portion 12 and with ring seat 4, compressing member
The position 13 of 5 couplings.Second spiral shell card cap 6 and the first spiral shell card cap 7 constitute fixing assembly, and the second spiral shell card cap 6 is hollow cylindrical
Structure, the outer surface of cylindrical-shaped structure is provided with the second screw thread 61, and the inner surface of the second spiral shell card cap 6 is formed with draw-in groove, its one end
End face smooth, the end face of the other end is provided with salient point, and this salient point is pressed on the compressing member 5 being made up of elastic component, is formed closely
Bonding structure.First spiral shell card cap 7 is T-shaped cylindrical-shaped structure, and its top has shoulder, and this shoulder can be shelved on the second spiral shell card cap 6
Flat surface, shoulder is cylindrical-shaped structure, and the outer surface of shoulder cylindrical-shaped structure is provided with the first screw thread 71, the first spiral shell card cap
The cylindrical structure in bottom of 7, lower cylindrical structure has what the draw-in groove that inner surface with the second spiral shell card cap 6 formed matched
Snap fit 72, and the lower surface of lower cylindrical structure to exceed the lower surface of the second spiral shell card cap 6, the lower end of lower cylindrical structure
Face also has salient point, and this salient point is also pressed on the compressing member 5 being made up of elastic component, is formed and fits tightly structure；First spiral shell card cap 7
The upper threaded portion 11 of the first screw thread 71 and nail seat 1 be mutually matched, the second screw thread 61 and the nail seat of the second spiral shell card cap 61 time
Threaded portion 12 is mutually matched, thus first spiral shell card cap the 7, second spiral shell card cap 6 is connected with nail seat 1 by threaded engagement, and first
Spiral shell card cap 7 and the second spiral shell card cap 6 realize stuck connection by draw-in groove, snap fit cooperation.
Compressing member 5, ring seat 4 all contact with barred body, and the upper surface of ring seat 4 offers the first groove 41, the lower end of compressing member 5
Face offers the second groove 52, and the first groove 41 of ring seat 4 matches with the second groove 52 of compressing member 5, constitutes and is easy to excellent leading to
The circular cavity crossed.Circular cavity cross section is circular, and the cambered surface of the first groove 41 has minimum point A, the arc of the second groove 52
Mask has peak B, has an O in longitudinal axis L, and the contact surface of ring seat 4 and compressing member 5 is (or O horizontal stroke on the horizontal line of O point
Axis), longitudinal axis distance OA from A point to O point is L1, and longitudinal axis distance OB from B point to O point is that L2, L1 and L2 are long
Degree sum is barred body diameter length equal to the air line distance between barred body diameter length, i.e. AB, and wherein, the length of L1 is designed to want
Length more than L2.Be provided with elastic raised line with barred body on the inner surface that compressing member 5 contacts, so, when the first spiral shell card cap 7, the
The when that two spiral shell card caps 6 applying pressure to compressing member 5, the elastic raised line on compressing member 5 inner surface presses to barred body, shape due to deformation
Become to encircle power such that it is able to be tightly abutted against on rod, it is to avoid absent-mindedness.And, it is only necessary to the interior table contacted with barred body at compressing member 5
It is provided with elastic raised line on face and can realize the power of preferably encircling to rod, due to the interior table that need not contact with barred body in ring seat 4
Being provided with elastic raised line on face, and the length of L1 is designed to the length more than L2, compressing member 5 with the contact area of barred body is
S1, ring seat 4 is S2 with the contact area of barred body, say, that contact area S1 of compressing member 5 and barred body be less than ring seat 4 with
Contact area S2 of barred body, so designs, and under the conditions of realizing preferably locking, can save the manufacturing cost of elastic raised line,
Without arranging elastic raised line in ring seat 4, thus save overall manufacturing cost.Further, contact area S1 with contact
The ratio range of area S2 is 1/2～2/3.
Further, novel combination type pedicle screw-rod locking system described in the utility model also includes tail cap 8, tail cap
The bottom of 8 has projection, and the middle part, upper end of the first spiral shell card cap 7 is provided with the hollow structure accommodating tail cap 8 projection, tail cap 8
With the first spiral shell card cap 7 for being connected together.
Further, the rivet nut 2 of a kind of novel combination type pedicle screw-rod locking system described in the utility model is outside
There is screw thread, in it, be provided with reinforcement, and this reinforcement extends to spike from rivet nut shoulder, thus avoid sending out when using
Raw broken nail phenomenon.Wherein, this reinforcement has a center body of rod, and on the body of rod, circumference is distributed and adds enriching shoot, thus strengthens rivet nut
Intensity.The spike of rivet nut has angle [alpha] 1, and angle [alpha] 1 is about 30 ° to 42 °.
As a kind of preferred version of novel combination type pedicle screw-rod locking system described in the utility model, wherein:
The angle of inclination of the diameter of thread, pitch and the screw thread of the first screw thread 71 of the first spiral shell card cap 7 and the upper threaded portion 11 with nail seat 1
Angle of inclination identical, the shape of screw thread can be triangle thread, rectangular thread or saw-tooth thread.It is preferably zigzag spiral shell
Stricture of vagina.
In order to realize more preferable locking effect, reach K2 of lower threaded portion 12 is long with the screw thread of upper threaded portion 11
The ratio range of degree K1 is 1.2～1.5, preferably 1.5.
As a kind of preferred version of novel combination type pedicle screw-rod locking system described in the utility model, wherein:
The angle of inclination of the diameter of thread, pitch and the screw thread of the second screw thread 61 of the second spiral shell card cap 6 and the lower threaded portion 12 with nail seat 1
Identical, the shape of screw thread can be triangle thread, rectangular thread or saw-tooth thread.
As a kind of preferred version of novel combination type pedicle screw-rod locking system described in the utility model, wherein:
The upper threaded portion 11 of nail seat 1 is identical with the screw thread rotation direction of lower threaded portion 12.
As a kind of preferred version of novel combination type pedicle screw-rod locking system described in the utility model, wherein:
First spiral shell card cap 7 is not provided with snap fit, and the second spiral shell card cap 6 is also not provided with draw-in groove, the upper threaded portion 11 of nail seat 1 and lower threaded portion
The screw thread rotation of 12 is in opposite direction.
As a kind of preferred version of novel combination type pedicle screw-rod locking system described in the utility model, wherein:
First spiral shell card cap 7 is not provided with snap fit, and the second spiral shell card cap 6 is also not provided with draw-in groove, but, the lower cylindrical knot of the second spiral shell card cap 7
The outer surface of structure is provided with screw thread, and the hollow interior surface of the second spiral shell card cap 6 is provided with and the spiral shell of lower cylindrical structural outer surface
The screw thread that stricture of vagina cooperates.
As a kind of preferred version of novel combination type pedicle screw-rod locking system described in the utility model, wherein:
Described pedicle screw is made up of nail seat 1 and rivet nut 2, and nail seat 1 and rivet nut 2 can be the parts in a non-activity joint, i.e. follow closely
Body 2 relative to nail seat 1 without any activity；Can also be connected by a movable joint, i.e. rivet nut 2 has necessarily relative to nail seat 1
The activity of scope.
Compressing member 5 is made by with biocompatible material, is preferably made up of plastic material, and more specifically by elasticity
Body material is made.Preferably, the material of compressing member 5 includes based on polycarbonate polyurethane or styreneisobutylene-styrene
Triblock copolymer.
First spiral shell card cap 7 and the second spiral shell card cap 6 all use magnesium alloy to make, in magnesium alloy possibly together with aluminium element, zinc element,
Theil indices and niobium element, described aluminium element content is 0.5～1.8%, and zinc element content is 1～1.6%, tin element content 1～
3%, niobium element content 4～4.5%.The magnesium alloy with aluminium element, zinc element, tin element and niobium element can be with organism phase
Hold, reduce the side effect produced when embedding organism.
As a kind of preferred version of novel combination type pedicle screw-rod locking system described in the utility model, nail seat 1
For hollow cylindrical structure, nail seat 1 includes threaded portion 11, lower threaded portion 12 and mates with ring seat 4, compressing member 5
Position 13, first spiral shell card cap the 7, second spiral shell card cap 6 is hollow columnar structures, and both outer surfaces are respectively arranged with the first spiral shell
Stricture of vagina the 71, second screw thread 61, and first screw thread the 71, second screw thread 61 respectively with upper threaded portion 11, the lower threaded portion 12 of nail seat 1
It is mutually matched realization to connect；One end of second screw thread 61 is provided with hollow prism shape structure, and hollow prism shape body structure surface is arranged
Having gear structure, the other end is smooth plane；One end of first spiral shell card cap 7 is provided with hollow prism shape structure, and the other end sets
Being equipped with cylinder sample and highlight structure, cylinder sample highlights body structure surface and is provided with gear spline structure；The gear structure of the second screw thread 61 and
The cylinder sample of the first spiral shell card cap 7 highlights the gear spline structure of body structure surface and cooperates.
Preferably, the cylinder sample of the first spiral shell card cap 7 highlights the incline direction of gear spline structure and first spiral shell of body structure surface
The hand of spiral of stricture of vagina 71 is same direction, clockwise or counterclockwise.
Preferably, the diameter of described second screw thread 61 is less than the first screw thread 71, the pitch of the second screw thread 61 and the first screw thread
The pitch of 71 differs.
Device described in the utility model is used to have following Advantageous Effects: the first spiral shell card cap 7 can add to continuously effective
Pressure locking the second spiral shell card cap 6, thus be effectively prevented between pedicle screw and rod occurring to loosen.By the first spiral shell card cap 7 He
After second spiral shell card cap 6 locking and pressurizing rod, the first spiral shell card cap 7 and the second spiral shell card cap 6 are connected with each other by snap fit draw-in groove, form one
Overall closing component structure, owing to have employed compressing member 5, the salient point of the first spiral shell card cap 7 and the second spiral shell card cap 6 lower end surface revolves at screw thread
Turn and act on compressing member 5 under pressure, be pressed in firmly on compressing member 5, so that compressing member 5 is resisted against on barred body, due to pressure
Tight part 5 is elastomer, and when there being pressure to act on elastomer, compressing member 5 can produce part deformation, and the elasticity of compressing member 5 is convex
Bar is pressed into contact with barred body, embraces and barred body so that compressing member 5 is more firm, it is to avoid loosen.
It is provided with elastic raised line on the inner surface that compressing member 5 contacts with barred body and can realize the power of preferably encircling to rod,
Owing to contact area S1 of compressing member 5 with barred body is less than contact area S2 of ring seat 4 and barred body, can save arrange elastic convex
The cost of bar.
Accompanying drawing explanation
Fig. 1 is front section view of the present utility model.
Fig. 2 is the structural representation of rivet nut 2.
Fig. 3 is the reach K2 reach K1 schematic diagram with upper threaded portion 11 of lower threaded portion 12.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail.
As it can be seen, a kind of novel combination type pedicle screw-rod locking system, being made up of pedicle screw and rod, rod is circle
Column construction, pedicle screw includes nail seat 1, rivet nut 2, ring seat 4, compressing member the 5, second spiral shell card cap 6 and the first spiral shell card cap 7,
First spiral shell card cap the 7, second spiral shell card cap 6, compressing member 5, ring seat 4 are the most from top to bottom arranged in nail seat 1.
Nail seat 1 is hollow cylindrical structure, including upper threaded portion 11, lower threaded portion 12 and with ring seat 4, compressing member
The position 13 of 5 couplings.Second spiral shell card cap 6 and the first spiral shell card cap 7 constitute fixing assembly, and the second spiral shell card cap 6 is hollow cylindrical
Structure, the outer surface of cylindrical-shaped structure is provided with the second screw thread 61, and the inner surface of the second spiral shell card cap 6 is formed with draw-in groove, its one end
End face smooth, the end face of the other end is provided with salient point, and this salient point is pressed on the compressing member 5 being made up of elastic component, is formed closely
Bonding structure.First spiral shell card cap 7 is T-shaped cylindrical-shaped structure, and its top has shoulder, and this shoulder can be shelved on the second spiral shell card cap 6
Flat surface, shoulder is cylindrical-shaped structure, and the outer surface of shoulder cylindrical-shaped structure is provided with the first screw thread 71, the first spiral shell card
The cylindrical structure in bottom of cap 7, lower cylindrical structure has the draw-in groove of the inner surface formation with the second spiral shell card cap 6 and matches
Snap fit 72, and the lower surface of lower cylindrical structure to exceed the lower surface of the second spiral shell card cap 6, under lower cylindrical structure
End face also has salient point, and this salient point is also pressed on the compressing member 5 being made up of elastic component, is formed and fits tightly structure；First spiral shell card
First screw thread 71 of cap 7 is mutually matched with the upper threaded portion 11 of nail seat 1, the second screw thread 61 and the nail seat 1 of the second spiral shell card cap 6
Lower threaded portion 12 is mutually matched, thus first spiral shell card cap the 7, second spiral shell card cap 6 is connected with nail seat 1 by threaded engagement, and the
One spiral shell card cap 7 and the second spiral shell card cap 6 realize stuck connection by draw-in groove, snap fit cooperation.
Compressing member 5, ring seat 4 all contact with barred body, and wherein the upper surface of ring seat 4 offers the first groove 41, compressing member 5
Lower surface offers the second groove 52, and the first groove 41 of ring seat 4 matches with the second groove 52 of compressing member 5, and composition is easy to
The circular cavity that rod passes through.Circular cavity cross section is circular, as it is shown in figure 1, the cambered surface of the first groove 41 has minimum point A,
The cambered surface of the second groove 52 has peak B, has an O on axis L, and the contact surface of ring seat 4 and compressing member 5 is at the water of O point
On horizontal line (or O transversal line), distance OA from A point to O point is L1, and from B point, distance OB to O point is L2, and the distance between AB is
Barred body diameter length, wherein, the length of L1 is designed to be greater than the length of L2.On the inner surface that compressing member 5 contacts with barred body
It is provided with elastic raised line, so, when first spiral shell card cap the 7, second spiral shell card cap 6 applies pressure to compressing member 5 when, compressing member 5
Elastic raised line on inner surface presses to barred body due to deformation, is formed and encircles power such that it is able to be tightly abutted against on rod, it is to avoid absent-mindedness.
Compressing member 5 and contact area S1 of barred body are 2/3 with the ratio of ring seat 4 with contact area S2 of barred body.
The material of described compressing member 5 uses and makes based on polycarbonate polyurethane.First spiral shell card cap 7 and the second spiral shell card
Cap 6 all uses magnesium alloy to make, in magnesium alloy possibly together with 1.8% aluminium element, 1.6% zinc element, the niobium element of 4.5% and
The tin element of 3%.
Wherein, reach K2 of lower threaded portion 12 is 1.5 with the ratio of reach K1 of upper threaded portion 11.
Pedicle screw-rod locking system also includes that tail cap 8, the bottom of tail cap 8 have projection, in the upper end of the first spiral shell card cap 7
Between position be provided with accommodate tail cap 8 projection hollow structure, tail cap 8 and the first spiral shell card cap 7 are for being connected together.The outside tool of rivet nut 2
There is screw thread 21, in it, be provided with reinforcement 22, and this reinforcement 22 extends to spike from rivet nut shoulder.
Specifically combine in lumbar spondylolisthesis operation about the use process of device described in the utility model:
The first step: by standard procedures flow process, sterilization paving is single and exposes operative region, in predetermined portion by standard procedures approach
Perforate also forms the passage implanting pedicle screw, the Measurement channel degree of depth, selects 4 sizes and the pedicle of vertebral arch screw being of convenient length
Nail；Select size and the rod 2 being of convenient length, and have a certain degree by corresponding tool flexion.
Second step: after being screwed into pedicle screw, opens vertebral plate, removes the anatomical factor causing spinal canal stenosis；Excision phase
Answer intervertebral disc, implant 2 Invasive lumbar fusion devices at correct position according to suitable angle.
3rd step: load onto rod in pedicle screw afterbody, the lumbar vertebra of the slippage that resets with corresponding apparatus, at pedicle screw
Afterbody loads onto the second spiral shell card cap 6, and tightens.
4th step: perspective confirms that lumbar spondylolisthesis resets and interior fixed position is good.
5th step: load onto the first spiral shell card cap 7 at pedicle screw afterbody, and tighten；Being hooked in of first spiral shell card cap 7 turns
Jump out time dynamic and enter draw-in groove to realize the first spiral shell card cap 7 stuck with the compact siro spinning technology of the second spiral shell card cap 6, tail cap 8 is installed.
6th step: be seamed to skin successively after rinsing wound surface and definitely stopping blooding.
It should be noted that above example only in order to the technical solution of the utility model to be described and unrestricted, although reference
This utility model has been described in detail by preferred embodiment, it will be understood by those within the art that, can be to this reality
Modify or equivalent by novel technical scheme, without deviating from the spirit and scope of technical solutions of the utility model,
It all should be contained in the middle of right of the present utility model.
Claims (9)
1. a novel combination type pedicle screw-rod locking system, is made up of pedicle screw and rod, it is characterised in that rod is circle
Column construction, pedicle screw includes nail seat (1), rivet nut (2), ring seat (4), compressing member (5), the second spiral shell card cap (6) and
One spiral shell card cap (7), wherein, described the first spiral shell card cap (7), the second spiral shell card cap (6), compressing member (5), ring seat (4) are successively by upper
It is arranged under and in nail seat (1).
2. novel combination type pedicle screw-rod locking system as claimed in claim 1, it is characterised in that described nail seat (1)
For hollow cylindrical structure, including upper threaded portion (11), lower threaded portion (12) and mate with ring seat (4), compressing member (5)
Position (13)；Second spiral shell card cap (6) is hollow columnar structures, and its outer surface is provided with the second screw thread (61), the second spiral shell card
The end face of one end of cap (6) smooths, and the end face of the other end is provided with salient point, and this salient point is pressed in the compressing member being made up of elastic component
(5), on, the inner surface of the second spiral shell card cap (6) is formed with draw-in groove；First spiral shell card cap (7) is T-shaped cylindrical-shaped structure, and its top has
Shoulder, this shoulder can be shelved on the flat surface of the second spiral shell card cap (6), and shoulder is cylindrical-shaped structure, shoulder cylindrical-shaped structure
Outer surface is provided with the first screw thread (71), the cylindrical structure in bottom of the first spiral shell card cap (7), lower cylindrical structure have with
The snap fit (72) that the draw-in groove that the inner surface of the second spiral shell card cap (6) is formed matches, and the lower surface of lower cylindrical structure will height
Going out the lower surface of the second spiral shell card cap (6), the lower surface of lower cylindrical structure also has salient point, and this salient point is also pressed in by elastic component
On the compressing member (5) made；First screw thread (71) of the first spiral shell card cap (7) and mutual of the upper threaded portion (11) of nail seat (1)
Joining, second screw thread (61) of the second spiral shell card cap (6) is mutually matched with the lower threaded portion (12) of nail seat (1), thus the first spiral shell card
Cap (7), the second spiral shell card cap (6) are connected with nail seat (1) by threaded engagement, and the first spiral shell card cap (7) and the second spiral shell card cap (6) lead to
Cross draw-in groove, snap fit cooperation realizes stuck connection；Compressing member (5), ring seat (4) all contact with barred body, and compressing member (5) and barred body
Being provided with elastic raised line on the inner surface of contact, wherein, compressing member (5) is S1 with the contact area of barred body, ring seat (4) and barred body
The ratio range that contact area is S2, S1 and S2 be 1/2～2/3.
3. novel combination type pedicle screw-rod locking system as claimed in claim 2, it is characterised in that described lower threaded portion
Dividing reach K2 of (12) is 1.2～1.5 with the ratio range of reach K1 of upper threaded portion (11).
4. the novel combination type pedicle screw-rod locking system as described in any one in claim 1-3, it is characterised in that also
Including tail cap (8), the bottom of tail cap (8) has projection, and the middle part, upper end of the first spiral shell card cap (7) is provided with receiving tail cap
(8) protruding hollow structure, tail cap (8) and the first spiral shell card cap (7) are for being connected together.
5. the novel combination type pedicle screw-rod locking system as described in any one in claim 1-3, it is characterised in that the
The angle of inclination of the diameter of thread, pitch and the screw thread of first screw thread (71) of one spiral shell card cap (7) and the upper threaded portion of nail seat (1)
(11) angle of inclination is identical, and the shape of screw thread can be triangle thread, rectangular thread or saw-tooth thread.
6. novel combination type pedicle screw-rod locking system as claimed in claim 4, it is characterised in that the first spiral shell card cap (7)
The angle of inclination of the diameter of thread, pitch and screw thread of the first screw thread (71) identical with the upper threaded portion (11) of nail seat (1), spiral shell
The shape of stricture of vagina can be triangle thread, rectangular thread or saw-tooth thread.
7. novel combination type pedicle screw-rod locking system as claimed in claim 1, it is characterised in that nail seat (1) is hollow
Cylindrical structural, including upper threaded portion (11), lower threaded portion (12) and the position mated with ring seat (4), compressing member (5)
(13), the first spiral shell card cap (7), the second spiral shell card cap (6) are hollow columnar structures, and both are respectively arranged with first by outer surface
Screw thread (71), the second screw thread (61), and the first screw thread (71), the second screw thread (61) respectively with the upper threaded portion of nail seat (1)
(11), lower threaded portion (12) is mutually matched realization connection；One end of second screw thread (61) is provided with hollow prism shape structure, in
Empty prismatic structure surface configuration has gear structure, the other end to be smooth planes；During one end of first spiral shell card cap (7) is provided with
Empty prismatic structure, the other end is provided with cylinder sample and highlights structure, and cylinder sample highlights body structure surface and is provided with gear spline structure；The
The gear structure of two screw threads (61) and the cylinder sample of the first spiral shell card cap (7) highlight the gear spline structure of body structure surface and cooperate.
8. novel combination type pedicle screw-rod locking system as claimed in claim 7, it is characterised in that the first spiral shell card cap (7)
Cylinder sample highlight the incline direction of gear spline structure of body structure surface and the hand of spiral of the first screw thread (71) is same direction,
Clockwise or counterclockwise.
9. novel combination type pedicle screw-rod locking system as claimed in claim 8, it is characterised in that described second screw thread
(61) pitch differs with the pitch of the first screw thread (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088853.1U CN205683130U (en) | 2015-12-24 | 2015-12-24 | A kind of novel combination type pedicle screw-rod locking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521088853.1U CN205683130U (en) | 2015-12-24 | 2015-12-24 | A kind of novel combination type pedicle screw-rod locking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205683130U true CN205683130U (en) | 2016-11-16 |
Family
ID=57264611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521088853.1U Withdrawn - After Issue CN205683130U (en) | 2015-12-24 | 2015-12-24 | A kind of novel combination type pedicle screw-rod locking system |
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| CN (1) | CN205683130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105581831A (en) * | 2015-12-24 | 2016-05-18 | 建湖县人民医院 | Novel combined type pedicle screw and rod locking system |
-
2015
- 2015-12-24 CN CN201521088853.1U patent/CN205683130U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105581831A (en) * | 2015-12-24 | 2016-05-18 | 建湖县人民医院 | Novel combined type pedicle screw and rod locking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161116 Effective date of abandoning: 20171114 |
|
| AV01 | Patent right actively abandoned |