CN218247352U - Spinal connection rod and nail rod system - Google Patents

Abstract

The application discloses backbone connective bar and nail stick system, backbone connective bar are used for nailing stick system, and the outer peripheral face of backbone connective bar is equipped with the marking line, and the marking line passes through colored anodic oxidation and forms, and at least some marking line extends along the length direction of backbone connective bar, and the outer peripheral face of marking line and backbone connective bar has different display effect. This application embodiment forms the marking line through at the colored anodic oxidation of backbone connective bar peripheral face to make marking line and backbone connective bar peripheral face have different display effect, so that the doctor when the backbone connective bar is buckling, can judge whether the backbone connective bar takes place to twist according to the deformation condition of marking line. Simultaneously, adopt colored anodic oxidation's mode to form the damage of mark line to the backbone connective bar less at the outer peripheral face of backbone connective bar, can not cause showing the influence to the fatigue performance of backbone connective bar, reduced the cracked risk of backbone connective bar when clinical use.

Description

Spinal connection rod and nail rod system

Technical Field

The application relates to the technical field of medical equipment, especially, relate to a spinal connective bar and nail stick system.

Background

The screw rod system is a medical instrument for treating diseases such as unstable spinal segment, thoracolumbar fracture dislocation, spinal deformity and the like caused by degenerative diseases, and is characterized in that a screw component of the screw rod system is implanted into a patient's pedicle and vertebral body, then is connected with screw components on other vertebral bodies through a spinal connecting rod, and is connected with a screw plug and the screw components, so that the spinal connecting rod and the screw components are locked, and the spinal column of the patient is fixed through the screw rod system.

When the nail-rod system is implanted into a human body, a doctor needs to bend the spinal connecting rod of the nail-rod system to a physiological curvature which is equivalent to the anatomical structure of the spinal column of the human body so as to restore the physiological curvature of the spinal column. In order to avoid twisting the spinal connection rod into a spiral shape in the bending process, a marking line extending along the length direction of the spinal connection rod is usually arranged on the outer peripheral surface of the spinal connection rod, and when the spinal connection rod is bent, a doctor can judge whether the spinal connection rod is twisted or not by referring to the deformation condition of the marking line.

However, in the prior art, a marking line is usually formed on the outer peripheral surface of the spinal connecting rod by adopting a laser marking method, which can significantly affect the fatigue performance of the spinal connecting rod and increase the risk of fracture of the spinal connecting rod in clinical use.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a spine connective bar and nail stick system aims at solving and forms the fatigue performance that the marking line can influence the spine connective bar on the mode spine connective bar that marks through the laser, and cracked risk when clinical use is being used to the increase spine connective bar.

The embodiment of the application provides a spine connective bar for nail stick system, the outer peripheral face of spine connective bar is equipped with the mark line, the mark line passes through colored anodic oxidation and forms, at least part the mark line is followed the length direction of spine connective bar extends, the mark line with the outer peripheral face of spine connective bar has different display effects.

In some embodiments, the marking line is a different color than the color of the outer peripheral surface of the spinal connecting rod; and/or the mark line and the outer peripheral surface of the spinal connecting rod have different roughness.

In some embodiments, the outer peripheral surface of the spinal connector rod includes a control region surrounding the marking wire, the control region being formed by color anodization, at least the control region having a color different from a color of the marking wire.

In some embodiments, the surface of the spinal connector rod other than the marker line is the control region.

In some embodiments, the color of the control area is yellow and the color of the marking line is blue or violet.

In some embodiments, the control area is red in color and the marking line is yellow or blue in color.

In some embodiments, the control area is green in color and the marker line is blue or red in color.

In some embodiments, the control area is blue in color and the marking line is red or yellow in color.

In some embodiments, the marker line is a dashed line segment; alternatively, the marking line is a real line segment.

In some embodiments, the marking line width is greater than or equal to 0.5mm and the marking line width is less than or equal to 3mm.

The embodiment of this application still provides a nail stick system, nail stick system includes:

the screw assembly comprises a screw seat and a bone screw connected with the screw seat;

the spinal connecting rod is used for penetrating through the screw seat, a mark line is arranged on the outer peripheral surface of the spinal connecting rod and formed through color anodic oxidation, at least part of the mark line extends along the length direction of the spinal connecting rod, and the mark line and the outer peripheral surface of the spinal connecting rod have different display effects;

the plug screw, the plug screw be used for with the screw seat is connected, the one end of plug screw be used for with the outer peripheral face butt of backbone connective bar, so that backbone connective bar locking the screw seat with the bone screw.

The spinal connecting rod that this application embodiment provided forms the marking line through at its peripheral colored anodic oxidation to make marking line and spinal connecting rod peripheral face have different display effect, so that the doctor can judge whether the spinal connecting rod takes place to twist according to the deformation condition of marking line when the spinal connecting rod is buckled. Simultaneously, compare in the mode through laser mark at the outer peripheral face mark marking line of backbone connective bar, this application adopts colored anodic oxidation's mode to form the damage of marking line to the backbone connective bar less at the outer peripheral face of backbone connective bar, can not cause apparent influence to the fatigue performance of backbone connective bar, has reduced the cracked risk of backbone connective bar when clinical use.

Drawings

The technical solutions and other advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic structural view of one embodiment of a nail and rod system provided by embodiments of the present application;

FIG. 2 is a cross-sectional view of one embodiment of a screw housing provided by an embodiment of the present application, taken along the axial direction of the screw housing;

FIG. 3 is a schematic structural view of one embodiment of a spinal connecting rod provided in accordance with embodiments of the present disclosure.

A nail rod system 100; a screw assembly 110; a screw seat 111; a mounting hole 1111; an insertion port 1112; a penetration port 1113; a connecting groove 1114; a slot 1115; a bone screw 112; a screw shaft 1121; a first end 1122; a second end 1123; a screw head 1132; a spinal connecting rod 120; a marking line 121; a control zone 122; a plug screw 130.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides a spinal rod and a nail rod system. The following are detailed below.

First, the embodiment of the present application provides a spinal connection rod.

FIG. 1 is a schematic structural diagram of an embodiment of a nail rod system provided by an embodiment of the application. As shown in FIG. 1, the nail rod system 100 includes a screw assembly 110, a spinal connecting rod 120 and a plug screw 130, the spinal connecting rod 120 is used for connecting with the screw assembly 110, and the plug screw 130 is used for connecting with the screw assembly 110 and the spinal connecting rod 120, so as to lock the spinal connecting rod 120 and fix the spinal connecting rod 120 and the screw assembly 110 together, and prevent the spinal connecting rod 120 from moving relative to the screw assembly 110. Wherein the spinal connection rod 120 can move relative to the screw assembly 110 when the screw plug 130 is not locked to the spinal connection rod 120.

With continued reference to FIG. 1, the screw assembly 110 includes a screw receptacle 111, and a bone screw 112 coupled to the screw receptacle 111, the bone screw 112 for implantation into a pedicle or vertebral body of a patient. The spinal connecting rod 120 is adapted to pass through the screw housing 111 to connect the spinal connecting rod 120 with the screw assembly 110. The screw plug 130 is used to be connected with the screw seat 111 of the screw assembly 110, and one end of the screw plug 130 abuts against the outer circumferential surface of the spinal connection rod 120 to enable the spinal connection rod 120 to lock the screw seat 111 and the bone screw 112, that is, to enable the spinal connection rod 120 to be fixedly connected with the screw seat 111 and the bone screw 112 of the screw assembly 110, so as to prevent the spinal connection rod 120 from moving relative to the screw assembly 110.

Specifically, as shown in fig. 1 and 2, a screw base 111 has a mounting hole 1111 formed therethrough, and one end (upper end of the mounting hole 1111 in fig. 2) of the mounting hole 1111 has an insertion port 1112, and the other end (lower end of the mounting hole 1111 in fig. 2) of the mounting hole 1111 has a penetration port 1113. The bone screw 112 includes a screw shaft 1121 and a screw head 1132, the screw shaft 1121 includes a first end 1122 and a second end 1123 opposite to each other, and the screw head 1132 is disposed at the first end 1122 of the screw shaft 1121. The diameter of the screw rod 1121 is smaller than the diameter of the mounting hole 1111 so that the second end 1123 of the screw rod 1121 can be inserted into the mounting hole 1111 from the insertion port 1112 of the mounting hole 1111 and come out from the penetration port 1113 of the mounting hole 1111. The diameter of the screw head 1132 is smaller than that of the insertion port 1112 and larger than that of the through-hole 1113, so that the screw head 1132 can enter into the mounting hole 1111 from the insertion port 1112 and abut against the inner surface of the mounting hole 1111 without coming out from the through-hole 1113 of the mounting hole 1111 (that is, the whole of the bone screw 112 cannot come out from below the screw seat 111). Also, the screw head 1132 can rotate in the mounting hole 1111 to adjust the inclination angle of the screw rod 1121 with respect to the screw holder 111.

The screw seat 111 is further provided with a through connecting groove 1114, the extending direction of the connecting groove 1114 is crossed with the extending direction of the mounting hole 1111, and the connecting groove 1114 is communicated with the mounting hole 1111. The spinal connection rod 120 passes through the connection groove 1114 in the extending direction of the connection groove 1114 to connect the spinal connection rod 120 with the screw holder 111. Wherein the screw head 1132 of the bone screw 112 is located on a side of the spinal connecting rod 120 facing the passage opening 1113.

The plug screw 130 is inserted into the mounting hole 1111 from the insertion port 1112 of the mounting hole 1111, so that the plug screw 130 is coupled to the screw holder 111 of the screw assembly 110. Also, one end of the plug screw 130 abuts against the outer circumferential surface of the spinal connection rod 120 on the side away from the head of the bone screw 112 to lock the spinal connection rod 120. At this time, one end of the screw plug 130 applies a pushing force to the spinal connection rod 120, so that the spinal connection rod 120 and the inner surface of the mounting hole 1111 clamp the screw head 1132, and the screw head 1132 is prevented from rotating in the mounting hole 1111, thereby achieving the purpose of fixedly connecting the bone screw 112, the screw seat 111 and the spinal connection rod 120 together.

In this case, the screw plug 130 is provided with an external thread on an outer circumferential surface thereof, the mounting hole 1111 is provided with an internal thread on an inner circumferential surface thereof, the external thread of the screw plug 130 is screwed with the internal thread of the mounting hole 1111, and thus the connection between the screw plug 130 and the screw base 111 is more stable. Of course, the screw plug 130 and the screw base 111 can be connected together by clamping or other methods, and the spinal connecting rod 120 can be locked only after the screw plug 130 is connected with the screw base 111.

In addition, the connecting groove 1114 of the screw holder 111 is formed with a notch 1115 at one side surface of the screw holder 111 where the insertion opening 1112 is opened, so that the spinal connecting rod 120 is placed in the connecting groove 1114 from the notch 1115 of the connecting groove 1114. Of course, the connecting groove 1114 of the screw seat 111 may be a through hole structure penetrating through the screw seat 111, and only the spinal connecting rod 120 may pass through the screw seat 111.

In trauma bone surgery, it is often necessary to implant the bone screws 112 into a patient's bone and to connect the bone screws 112 to a bone plate, spinal connector rod 120, or other fixation means for securing the bone to achieve fixation of the bone. Prior to implanting the bone screw 112 into the bone of a patient, a screw hole is typically formed in the patient's bone, and the bone screw 112 is then threaded into the screw hole with a tool to threadedly engage the bone screw 112 with the bone. In the case of a harder cortical bone of the patient's bone, a screw channel structure is also tapped into the screw hole in the bone by a tap (not shown) to facilitate threading of the external threads of the bone screw 112 into the screw hole along the channel structure.

Take the treatment of unstable spinal segment, thoracolumbar fracture dislocation, spinal deformity and other diseases caused by degenerative diseases through the nail-rod system 100 as an example: the plurality of bone screws 112 may be implanted into different vertebral bodies of a patient after passing through the screw seats 111, then the spinal connection rod 120 passes through the plurality of screw seats 111, and the plug screw 130 is connected to each screw seat 111, after the vertebral body in which the bone screws 112 are implanted is adjusted to a proper position, each screw seat 111 and the bone screws 112 are fixedly connected to the spinal connection rod 120 through the plug screw 130, the spinal connection rod 120 is prevented from moving relative to the bone screws 112, and thus the relative position of the vertebral body connected to each bone screw 112 is kept stable, so as to achieve the purpose of fixing the spinal column of the patient.

Wherein, when the nail-rod system 100 is implanted into the human body, the doctor needs to bend the spinal connecting rod 120 to the physiological curvature corresponding to the human spinal anatomy so as to restore the natural physiological curvature of the spinal column. In order to avoid twisting the spinal connection rod 120 into a spiral shape during the bending process, as shown in fig. 3, the outer circumferential surface of the spinal connection rod 120 is provided with a mark line 121, at least a part of the mark line 121 extends along the length direction of the spinal connection rod 120, and when the spinal connection rod 120 is bent, a doctor can observe whether the mark line 121 is twisted along the circumferential direction of the spinal connection rod 120, so as to judge whether the spinal connection rod 120 is twisted.

All the marking lines 121 can extend along the length direction of the spinal connection rod 120, or some of the marking lines 121 can extend along the length direction of the spinal connection rod 120, and it is only necessary to determine whether the spinal connection rod 120 is twisted through the marking lines 121.

In the prior art, the marking lines 121 are usually formed on the outer peripheral surface of the spinal connecting rod 120 by a laser marking method, which can significantly affect the fatigue performance of the spinal connecting rod 120 and increase the risk of fracture of the spinal connecting rod 120 in clinical use.

In order to reduce the problem that the spinal connecting rod 120 is increased in fracture risk in clinical use due to the arrangement of the marking lines 121, the embodiment of the application provides the spinal connecting rod 120 for the nail rod system 100, wherein the marking lines 121 on the spinal connecting rod 120 are formed by colored anodic oxidation, and the outer peripheral surfaces of the marking lines 121 and the spinal connecting rod 120 have different display effects. Among them, a process for coloring the surface of colored anodized metal is also called electrochemical coloring, anodic oxidation dyeing, etc. The metal with surface anode oxidation or the metal with coating colors the oxidation film or coating on the metal surface by the action of the electric field during electrolysis.

The spine connecting rod 120 provided by the embodiment of the application forms the marking line 121 by the colored anodic oxidation on the outer peripheral surface thereof, and the marking line 121 and the outer peripheral surface of the spine connecting rod 120 have different display effects, so that when a doctor bends the spine connecting rod 120, the doctor can judge whether the spine connecting rod 120 is twisted by referring to the deformation condition of the marking line 121. Simultaneously, compare in the mode through laser marking at the outer peripheral face mark line 121 of backbone connective bar 120, this application adopts colored anodic oxidation's mode to form mark line 121 less to the damage of backbone connective bar 120 at the outer peripheral face of backbone connective bar 120, can not cause apparent influence to the fatigue performance of backbone connective bar 120, has reduced the cracked risk of backbone connective bar 120 when clinical use.

It should be noted that the mark line 121 and the outer peripheral surface of the spinal connection rod 120 have different display effects, the color of the mark line 121 may be different from the color of the outer peripheral surface of the spinal connection rod 120, or the mark line 121 and the outer peripheral surface of the spinal connection rod 120 may have different roughness, of course, the mark line 121 and the outer peripheral surface of the spinal connection rod 120 may have different colors and different roughness at the same time, and only the doctor needs to clearly observe the mark line 121 on the spinal connection rod 120.

In some embodiments, the outer circumferential surface of the spinal connector rod 120 includes a control region 122 surrounding the marking line 121, the control region 122 is formed by color anodizing, and at least the control region 122 of the surface of the spinal connector rod 120 has a different display effect from the marking line 121 to make the marking line 121 more visible through the control region 122, thereby enabling a physician to more clearly observe the marking line 121 on the spinal connector rod 120.

Wherein at least the control region 122 of the surface of the spinal connecting rod 120 may be colored differently than the color of the marking line 121. Alternatively, the roughness of at least the control region 122 of the surface of the spinal connecting rod 120 may be different from the roughness of the marking line 121.

Specifically, the control region 122 of the spinal rod 120 may be first color-anodized to a first color, and then the mark line 121 may be color-anodized to a second color, where the first color and the second color have a certain color difference. In which a part of the area within the illuminated area dyed with the first color is removed by polishing, scraping, sand blasting, grinding, etc., and then the area is color-anodized to form the marking line 121 having the second color. Alternatively, the color anodization may be continued directly in the illuminated area dyed with the first color to form the marking line 121 having the second color.

In other embodiments, the marking line 121 on the surface of the spinal rod 120 may be first color-anodized to a first color, and then the control region 122 surrounding the marking line 121 may be color-anodized to a second color, where the first color and the second color have a certain color difference.

In some embodiments, the surface of the spinal connecting rod 120 other than the marker line 121 is a control region 122. Therefore, the spine connecting rod 120 can be directly placed into the solution pool integrally, certain voltage is applied to the spine connecting rod 120, the whole surface of the spine connecting rod 120 is subjected to color anodic oxidation, and the operation is very convenient.

Of course, it is also possible to immerse only a portion of the spinal connection rod 120 in the solution bath and apply a certain voltage to the spinal connection rod 120 to color-anodize the surface of the spinal connection rod 120 immersed in the solution bath. In this case, the surface area of the spinal connector rod 120 that is immersed in the pool of solution is the control area 122.

In the embodiment of the present application, the marking line 121 on the spinal connecting rod 120 may be a virtual line segment or a real line segment. Wherein, the mark line 121 is a dotted line segment, which enables the doctor to more easily judge whether the spinal rod 120 is twisted.

In some embodiments, the width of the marker line 121 is greater than or equal to 0.5mm to facilitate visualization of the marker line 121 by a physician. In addition, the width of the marking line 121 is less than or equal to 3mm, so as to prevent the marking line 121 from being too wide, and thus, a doctor cannot easily judge whether the spinal rod 120 is twisted through the marking line 121.

In some embodiments, the control region 122 of the spinal connector rod 120 is yellow in color and the marking line 121 is blue or purple in color. Therefore, the marked line 121 and the contrast area 122 can form a relatively obvious color difference, and a doctor can conveniently observe the marked line 121. The yellow color of the control area 122 may be golden yellow or other yellow colors, which may be determined according to the type of solution in the solution tank and the voltage applied to the spinal connection rod 120.

Further, by making the control region 122 of the spinal connection rod 120 yellow and the mark line 121 blue or purple, the control region 122 of the spinal connection rod 120 may be first immersed in a solution bath, and a higher voltage may be applied to the spinal connection rod 120 to dye the control region 122 of the spinal connection rod 120 yellow, and then, after removing a portion of the color of the control region 122, the control region 122 of the spinal connection rod 120 may be immersed in another solution bath, and a lower voltage may be applied to the spinal connection rod 120 to dye the portion of the control region 122 blue or purple after removing the color.

Since the applied voltage of the spinal connection rod 120 is low in the second dyeing, the color of the region other than the mark line 121 at the control region 122 of the spinal connection rod 120 is substantially maintained and is not dyed blue or purple when the mark line 121 is dyed. Therefore, the control area 122 of the spinal connection rod 120 can be completely immersed into another solution pool, especially when the surfaces of the spinal connection rod 120 except the marking line 121 are the control area 122, the spinal connection rod 120 can be directly immersed into the solution pool, and the operation is very convenient.

Likewise, the control area 122 of the spinal rod 120 may be colored red and the marking line 121 may be colored yellow or blue, so that the marking line 121 is in a more distinct color difference from the control area 122 to facilitate the observation of the marking line 121 by the physician. Moreover, the control area 122 of the spinal connection rod 120 can be completely immersed into another solution pool, especially when the surfaces of the spinal connection rod 120 except the marking line 121 are the control area 122, the spinal connection rod 120 can be directly immersed into the solution pool, and the operation is very convenient.

The red color of the control area 122 may be rose or other red color, and the yellow color of the mark line 121 may include a golden color or other yellow color, which may be determined by the solution in the solution tank and the voltage applied to the spinal rod 120.

In addition, the color of the control area 122 of the spinal connecting rod 120 can be green, and the color of the marking line 121 can be blue or red, so that the marking line 121 and the control area 122 form a more obvious color difference, and the marking line 121 can be conveniently observed by a doctor. Moreover, the control area 122 of the spinal connection rod 120 can be completely immersed into another solution pool, especially when the surfaces of the spinal connection rod 120 except the marking line 121 are the control area 122, the spinal connection rod 120 can be directly immersed into the solution pool, and the operation is very convenient.

The green color of the control area 122 may be grass green or other green colors, and the red color of the mark line 121 includes rose red or other red colors, which may be determined by the solution in the solution tank and the voltage applied to the spinal rod 120.

Of course, the color of the control area 122 of the spinal rod 120 may be blue, and the color of the marking line 121 may be red or yellow, so that the marking line 121 and the control area 122 have a more obvious color difference, which is convenient for the doctor to observe the marking line 121. In this case, the marking line 121 of the spinal connection rod 120 may be immersed in one solution bath and a relatively large voltage applied to color-anodize the marking line 121 red or yellow, and then the control region 122 of the spinal connection rod 120 may be immersed in another solution bath and a relatively small voltage applied to color-anodize the control region 122 except for the marking line 121 blue.

The red color of the mark line 121 may be rosy or other red colors, and the yellow color of the mark line 121 may be golden yellow or other yellow colors, which may be determined by the solution in the solution tank and the voltage applied to the spinal rod 120.

The embodiment of the application further provides a nail rod system, the nail rod system comprises a spinal connecting rod, the specific structure of the spinal connecting rod refers to the above embodiments, and the nail rod system adopts all technical schemes of all the above embodiments, so that at least all beneficial effects brought by the technical schemes of the above embodiments are achieved, and the details are omitted.

The screw rod system 100 includes a screw assembly 110, a spinal rod 120 and a plug screw 130, wherein the screw assembly 110 includes a screw seat 111 and a bone screw 112 connected to the screw seat 111. The spinal connecting rod 120 is used to pass through the screw seat 111. The plug screw 130 is used to connect with the screw seat 111, and one end of the plug screw 130 abuts against the outer circumferential surface of the spinal connection rod 120, so that the spinal connection rod 120 locks the screw seat 111 and the bone screws 112. The structures of the screw seat 111, the spinal rod 120, the plug 130 and the bone screw 112 can refer to the above embodiments, and are not described herein.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The spinal rod and the nail rod system provided by the embodiment of the application are described in detail, the principle and the implementation mode of the application are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (10)

1. The utility model provides a spinal connective bar for nail stick system, its characterized in that, spinal connective bar's outer peripheral face is equipped with the mark line, the mark line forms through colored anodic oxidation, at least part the mark line is followed the length direction of spinal connective bar extends, the mark line with spinal connective bar's outer peripheral face has different display effect.

2. The spinal connector rod of claim 1 wherein the marking line is a color different from the color of the outer peripheral surface of the spinal connector rod; and/or the mark line and the outer peripheral surface of the spinal connecting rod have different roughness.

3. The spinal connector rod of claim 2 wherein the outer peripheral surface of the spinal connector rod includes a control region surrounding the marking line, the control region being formed by color anodization, at least the control region having a color different from the color of the marking line.

4. The spinal connector rod of claim 3 wherein said surface of said spinal connector rod other than said marker line is said control region.

5. The spinal connector rod of claim 3 wherein said control region is yellow in color and said marking line is blue or purple in color.

6. The spinal connector rod of claim 3 wherein said control region is red in color and said marking line is yellow or blue in color.

7. The spinal connector rod of claim 3 wherein the control region is green in color and the marking line is blue or red in color; alternatively, the first and second electrodes may be,

the color of the control area is blue, and the color of the marking line is red or yellow.

8. A spinal connector rod as defined in any one of claims 1 to 7 wherein said marking line is a dashed line segment; alternatively, the marking line is a real line segment.

9. The spinal connector rod of any one of claims 1 to 7 wherein the marking line width is greater than or equal to 0.5mm and the marking line width is less than or equal to 3mm.

10. A nail and rod system, characterized in that the nail and rod system comprises:

the screw assembly comprises a screw seat and a bone screw connected with the screw seat;

a spinal connecting rod according to any one of claims 1 to 9, the spinal connecting rod being adapted to pass through the screw seat;

the plug screw, the plug screw be used for with the screw seat is connected, the one end of plug screw be used for with the outer peripheral face butt of backbone connective bar, so that backbone connective bar locking the screw seat with the bone screw.

Images