CN213606801U - Spinal fixation rod - Google Patents
Spinal fixation rod Download PDFInfo
- Publication number
- CN213606801U CN213606801U CN202022528678.0U CN202022528678U CN213606801U CN 213606801 U CN213606801 U CN 213606801U CN 202022528678 U CN202022528678 U CN 202022528678U CN 213606801 U CN213606801 U CN 213606801U
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- China
- Prior art keywords
- rod
- spinal fixation
- rod body
- end cover
- barred body
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Abstract
The utility model relates to a spinal fixation rod, including the barred body to and set up the end cover at barred body both ends, the size of end cover is greater than the external diameter of barred body, and is greater than the width with the U-shaped notch of barred body complex pedicle of vertebral arch screw. The utility model discloses in through the setting of barred body both ends end cover, not only can restrict its U-shaped notch from pedicle of vertebral arch screw and drop at the in-process that implants the spinal fixation stick and the centrum struts, but also can strut the height that the in-process restriction cone struts to strut too much, finally reach and resume the suitable height of cone and fixed purpose.
Description
Technical Field
The utility model belongs to the technical field of orthopedics medical instrument, concretely relates to spinal fixation stick.
Background
In minimally invasive spine surgery, a plurality of pedicle screws need to be connected by spine fixing rods, so that the spine is fixed and repaired.
The existing spine fixing rod is of a single rod body structure, the minimally invasive wound is small, the sight line is easy to block, the spine fixing rod is inserted into a U-shaped groove of a pedicle screw, vertebrae are propped open, and the height of a cone is recovered.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a spinal fixation stick to solve the problem that spinal fixation stick both ends easily break away from with pedicle of vertebral arch screw.
The utility model discloses a spinal fixation stick is realized like this:
the utility model provides a spinal fixation stick, includes the barred body, and sets up the end cover at barred body both ends, the external diameter of end cover is greater than the external diameter of barred body, and be greater than with the width of the U-shaped notch of barred body complex pedicle of vertebral arch screw.
Further, the rod body is a bending rod.
Further, the rod body is a straight rod.
Further optionally, the end cap is circular and has an outer diameter greater than the width of the U-shaped slot of the pedicle screw engaged with the rod.
Further optionally, the end cap is polygonal, and the diameter of an inscribed circle of the end cap is larger than the width of a U-shaped slotted hole of the pedicle screw matched with the rod body.
Preferably, the polygon is a triangle, a quadrangle, a pentagon or a hexagon.
Furthermore, the two end covers at the two ends of the rod body are the same or different in shape.
After the technical scheme is adopted, the utility model discloses the beneficial effect who has does:
the utility model discloses a setting of barred body tip end cover to the in-process that makes the fixed stick of backbone insert the U-shaped notch of pedicle of vertebral arch screw and strut the centrum can not drop, need not the position of repeated operation perspective in order to confirm the fixed stick of backbone, thereby reduces the injury to the patient and to doctor's radiant quantity in the operation, shortens operation time, realizes the high recovery and the final fixed of centrum.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a front view of a spinal fixation rod according to example 1 of the present invention;
fig. 2 is a side view of a spinal fixation rod according to example 1 of the present invention;
fig. 3 is a front view of the spinal fixation rod of embodiment 2 of the present invention;
fig. 4 is a side view of the spinal fixation rod of embodiment 2 of the present invention;
fig. 5 is a front view of the spinal fixation rod of embodiment 3 of the present invention;
fig. 6 is a side view of the spinal fixation rod of embodiment 3 of the present invention;
fig. 7 is a front view of a spinal fixation rod according to example 4 of the present invention;
fig. 8 is a left side view of the spinal fixation rod of embodiment 4 of the present invention;
fig. 9 is a right side view of the spinal fixation rod of embodiment 4 of the present invention;
fig. 10 is a front view of the spinal fixation rod of example 5 of the present invention;
FIG. 11 is a side view of the spinal fixation rod of example 5 of the present invention;
in the figure: a rod body 1 and an end cover 2.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-2, a spinal fixation rod comprises a rod body 1 and end covers 2 arranged at two ends of the rod body 1, wherein the outer diameter of each end cover 2 is larger than that of the rod body 1 and is larger than the width of a U-shaped notch of a pedicle screw matched with the rod body 1.
In the operation process, the spine fixing rod is required to be bent to a bent structure with the same shape as the spine of a human body, and in order to reduce the degree of bending of the spine fixing rod by a doctor and shorten the operation time, the rod body 1 is a bent rod.
In this embodiment, the end caps 2 at both ends of the rod 1 have the same shape and are circular.
The outer diameter of the circular end cover is larger than that of the rod body 1 and is also larger than the width of the U-shaped notch of the pedicle screw, so that the two ends of the spine fixing rod are prevented from being separated from the pedicle screw.
When spine surgery is carried out, the pedicle screws are correspondingly driven into the spine of a human body, then the spine fixing rod is inserted into the U-shaped notches on the pedicle screws, and then the distance between every two adjacent pedicle screws is increased so as to achieve the effects of expanding vertebrae and recovering the height of a cone. And because the setting of end cover 2 at this moment, when strutting the vertebra, the both ends of backbone fixed rod can not be with lieing in its both ends pedicle of vertebral arch screw separation.
Example 2
As shown in fig. 3 to 4, in addition to embodiment 1, the present application also discloses a spinal fixation rod, which has substantially the same structure as that of the spinal fixation rod disclosed in embodiment 1, except that the end caps 2 at both ends of the rod body 1 are quadrilateral.
The diameter of the quadrilateral inscribed circle is larger than the width of the U-shaped notch of the pedicle screw, so that the end part of the spine fixing rod cannot fall off from the U-shaped notch of the pedicle screw due to the action of the end cover.
Example 3
As shown in fig. 5 to 6, in addition to the embodiment 1, the present application also discloses a spinal fixation rod, which has a structure substantially the same as that of the spinal fixation rod disclosed in the embodiment 1, except that the end caps 2 at both ends of the rod body 1 are hexagonal.
The diameter of the hexagonal inscribed circle is larger than the width of the U-shaped notch of the pedicle screw, so that the end part of the spine fixing rod cannot fall off from the U-shaped notch of the pedicle screw due to the effect of the end cover.
Example 4
As shown in fig. 7 to 9, in addition to embodiment 1, the present application further discloses a spinal fixation rod, which has a structure substantially the same as that of the spinal fixation rod disclosed in embodiment 1, except that the end caps 2 at both ends of the rod body 1 have different shapes, one end of which is circular and the other end of which is hexagonal.
The diameter of the circular end cover and the diameter of the hexagonal inscribed circle are both larger than the width of the U-shaped notch of the pedicle screw, so that the end part of the spine fixing rod can not fall off from the U-shaped notch of the pedicle screw.
Example 5
As shown in fig. 10 to 11, on the basis of embodiment 1, the present application further discloses a spinal fixation rod, which has a structure substantially the same as that of the spinal fixation rod disclosed in embodiment 1, except that the rod body 1 is a straight rod.
The shape of the end cover 2 is not limited to the above structures, and only the end part of the spine fixing rod can not fall off from the U-shaped notch of the pedicle screw.
The utility model discloses in through the setting of 1 both ends end cover 2 of barred body, not only can restrict its U-shaped notch from the pedicle of vertebral arch screw and drop at the in-process that inserts the spinal fixation stick, but also can restrict the height of cone at the in-process that struts to strut too much, thereby reach and resume the cone height and fixed purpose.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. The spinal fixation rod is characterized by comprising a rod body (1) and end covers (2) arranged at two ends of the rod body (1), wherein the size of each end cover (2) is larger than the outer diameter of the rod body (1) and the width of a U-shaped notch of a pedicle screw matched with the rod body (1).
2. The spinal fixation rod according to claim 1, characterized in that the rod body (1) is a curved rod.
3. The spinal fixation rod according to claim 1 characterized in that the rod body (1) is a straight rod.
4. The spinal fixation rod of claim 2 or 3 wherein the end cap is circular and has an outer diameter greater than the width of the U-shaped slot of the pedicle screw engaged with the rod body.
5. The spinal fixation rod of claim 2 or 3 wherein the end cap is polygonal with an inscribed circle having a diameter greater than the width of the U-shaped slot of the pedicle screw engaged with the rod body.
6. The spinal fixation rod according to claim 4 characterized in that the two end caps (2) at the two ends of the rod body are of the same or different shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022528678.0U CN213606801U (en) | 2020-11-04 | 2020-11-04 | Spinal fixation rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022528678.0U CN213606801U (en) | 2020-11-04 | 2020-11-04 | Spinal fixation rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213606801U true CN213606801U (en) | 2021-07-06 |
Family
ID=76629905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022528678.0U Active CN213606801U (en) | 2020-11-04 | 2020-11-04 | Spinal fixation rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213606801U (en) |
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2020
- 2020-11-04 CN CN202022528678.0U patent/CN213606801U/en active Active
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