CN219048782U - Universal connector for internal fixation of spine - Google Patents
Universal connector for internal fixation of spine Download PDFInfo
- Publication number
- CN219048782U CN219048782U CN202223558109.6U CN202223558109U CN219048782U CN 219048782 U CN219048782 U CN 219048782U CN 202223558109 U CN202223558109 U CN 202223558109U CN 219048782 U CN219048782 U CN 219048782U
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- connector
- connecting rod
- bowl
- internal fixation
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Abstract
The utility model discloses a universal connector for fixing in a spine, which comprises the following components: a connecting rod and a connector; the beneficial effects of the utility model are as follows: the connector formed by the connecting bowl and the connector is essentially a universal ball joint, the first connecting rod is connected with the second connecting rod through the universal ball joint, and meanwhile, the rod body can translate when being connected with the pedicle screw, so that the spine internal fixation universal connector designed by the utility model has at least four degrees of freedom, the pedicle screw can be tightly connected with the pedicle screw when being positioned at each installation angle, and the installation process is simple; the nut on the locking connector after the connection of the rod body is completed, so that the universal ball joint is locked by the pressing block, thereby achieving the aim of internal fixation. The device also avoids the defects that the traditional connector needs to be bent and is difficult to install.
Description
Technical Field
The utility model belongs to the field of medical instruments, and particularly relates to a universal connector for fixing in a spine.
Background
When a patient suffers from a spine fracture or performs a spinal canal decompression operation, the spine is required to be internally fixed to maintain the stability of the vertebral body due to insufficient stability of the spine, and the most commonly used scheme is that after pedicle screws are placed in the vertebral body, the pedicle screws are connected through connectors, so that the effect of fixing the vertebral body is achieved. However, in the prior art, as in the utility model with the publication number of CN208228989U, each pedicle screw is connected through a rigid rod, so that there is a problem that the positions of each pedicle screw in the space are not uniform in practical application, and during installation, the notch of each pedicle screw cannot be completely attached to the rod, so that sliding may be caused to cause internal fixation failure, if the rod is completely attached, the rod needs to be bent, but the rod is generally made of titanium alloy, so that the rigidity is high, the bending is difficult, and the operation is very unfavorable. The problems that need to be solved at present are therefore: a device is sought that can be quickly connected to and tightly connected to pedicle screws in all directions.
Disclosure of Invention
In order to solve the technical problems, the utility model designs the universal connector for fixing the spine.
In order to achieve the technical purpose, the utility model is realized by the following technical scheme: a spinal internal fixation universal connector comprising: a connecting rod and a connector;
the diameter of the connecting rod is smaller than the gap width of the pedicle screw, and the connecting rod comprises a first connecting rod and a second connecting rod, so that the rigidity is high;
the connector comprises a connecting bowl, a connector, a pressing block and a nut; the connecting bowl is fixedly connected with the first connecting rod, the bottom of the connecting bowl is hemispherical, groove-shaped notches are formed in the upper part and the side face of the connecting bowl, and internal threads are formed in the upper part of the connecting bowl; the connector is spherical and is fixedly connected with the second connecting rod, and is contacted with the hemispherical surface at the lower part of the connecting bowl; the bottom surface of the pressing block is hemispherical, a semicircular notch is formed in the side surface of the pressing block and is arranged at the upper part of the connecting head in the connecting bowl, and the direction of the semicircular notch is the same as that of the second connecting rod; the screw cap is arranged at the thread at the upper part of the connecting bowl;
preferably, the diameter of the joint of the connector and the second connecting rod is smaller than that of the second connecting rod;
preferably, a circular protrusion is arranged above the pressing block;
preferably, the hemispherical edge below the pressing block is chamfered;
preferably, the nut groove shape is an inner hexagon;
the beneficial effects of the utility model are as follows:
the connector formed by the connecting bowl and the connector is essentially a universal ball joint, the first connecting rod is connected with the second connecting rod through the universal ball joint, and meanwhile, the rod body can translate when being connected with the pedicle screw, so that the spine internal fixation universal connector designed by the utility model has at least four degrees of freedom, the pedicle screw can be tightly connected with the pedicle screw when being positioned at each installation angle, and the installation process is simple; the nut on the locking connector after the connection of the rod body is completed, so that the universal ball joint is locked by the pressing block, thereby achieving the aim of internal fixation. The device also avoids the defects that the traditional connector needs to be bent and is difficult to install.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is an exploded view of the structure of the present utility model;
FIG. 3 is a front view of the present utility model;
FIG. 4 is a cross-sectional view of the utility model A-A;
FIG. 5 is a schematic view of the structure of the briquette according to the present utility model;
in the drawings, the list of components represented by the various numbers is as follows:
1-a first connecting rod, 101-a connecting bowl, 2-a second connecting rod, 201-a connector, 3-a pressing block, 301-a spherical contact surface and 302-an annular protrusion; 4-nut, 5-pedicle screw.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-3, a spinal internal fixation universal connector comprising: a connecting rod and a connector;
the diameter of the connecting rod is smaller than the width of the gap of the pedicle screw 5, and the connecting rod comprises a first connecting rod 1 and a second connecting rod 2, has high rigidity and ensures the stability of internal fixation;
the connector comprises a connecting bowl 101, a connector 201, a pressing block 3 and a nut 4; the connecting bowl 101 is fixedly connected with the first connecting rod 1, the bottom is hemispherical, groove-shaped notches are formed in the upper side and the side face, the notch in the upper side is used for allowing the connector 201 to enter when the connector 201 is installed, the side face provides space for the rotation of the connector 201 and the second connecting rod 2, and internal threads are formed in the upper side of the connecting bowl 101; the connector 201 is spherical and is fixedly connected with the second connecting rod 2, and is contacted with the hemispherical surface at the lower part of the connecting bowl 101; the bottom surface of the pressing block 3 is hemispherical, the pressing block 3, the connector 201 and the connecting bowl 101 form a complete universal ball joint, a semicircular notch is formed in the side surface of the pressing block, space is provided for rotation of the connector 201 and the second connecting rod 2, the pressing block 3 is arranged on the upper part of the connector 201 in the connecting bowl 101, and the direction of the semicircular notch is the same as that of the second connecting rod 2; the nut 4 is arranged at the upper thread of the connecting bowl 101;
preferably, the diameter of the joint of the connector 201 and the second connecting rod 2 is smaller than the diameter of the second connecting rod 2, so that the rotatable range of the second connecting rod 2 is increased;
preferably, a circular protrusion 302 is arranged above the pressing block 3, so that the contact area between the nut 4 and the pressing block 3 can be properly reduced, and the influence of uneven stress on the pressing block 3 on the locking effect is prevented;
preferably, the hemispherical edge below the pressing block 3 is chamfered, so that the phenomenon that the locking effect is reduced due to the fact that pressure is dispersed to the wall of the connecting bowl 101 at the edge due to machining errors is avoided;
preferably, the groove type of the nut 4 is an inner hexagon, and the nut is not easy to slip when being screwed down during installation;
the using method based on the embodiment is as follows: firstly, placing pedicle screws 5, then, firstly, assembling the device outside the body, at the moment, firstly, not screwing the nuts 4 above the connecting bowl 101, and after the first connecting rod 1 and the second connecting rod 2 are respectively installed, screwing the nuts 4 on the connecting bowl 101, thus finishing internal fixation; the first connecting rod 1 can be installed firstly after the pedicle screw 5 is placed, then the assembly of the device is completed, and finally the second connecting rod 2 is fixed.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (5)
1. A spinal internal fixation universal connector, comprising: a connecting rod and a connector;
the diameter of the connecting rod is smaller than the gap width of the pedicle screw, and the connecting rod comprises a first connecting rod and a second connecting rod, so that the rigidity is high;
the connector comprises a connecting bowl, a connector, a pressing block and a nut; the connecting bowl is fixedly connected with the first connecting rod, the bottom of the connecting bowl is hemispherical, groove-shaped notches are formed in the upper part and the side face of the connecting bowl, and internal threads are formed in the upper part of the connecting bowl; the connector is spherical and is fixedly connected with the second connecting rod, and is contacted with the hemispherical surface at the lower part of the connecting bowl; the bottom surface of the pressing block is hemispherical, a semicircular notch is formed in the side surface of the pressing block and is arranged at the upper part of the connecting head in the connecting bowl, and the direction of the semicircular notch is the same as that of the second connecting rod; the nut is arranged at the thread at the upper part of the connecting bowl.
2. A spinal column internal fixation universal connector as recited in claim 1, wherein the diameter of the connection of the connector to the second connector rod is less than the diameter of the second connector rod.
3. The spinal column internal fixation universal connector of claim 1, wherein the press block has an annular protrusion above it.
4. A spinal internal fixation universal connector as recited in claim 1, wherein the hemispherical edge below the press block is chamfered.
5. A spinal internal fixation universal connector as recited in claim 1, wherein the nut channel is hexagonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223558109.6U CN219048782U (en) | 2022-12-30 | 2022-12-30 | Universal connector for internal fixation of spine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223558109.6U CN219048782U (en) | 2022-12-30 | 2022-12-30 | Universal connector for internal fixation of spine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219048782U true CN219048782U (en) | 2023-05-23 |
Family
ID=86367589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223558109.6U Active CN219048782U (en) | 2022-12-30 | 2022-12-30 | Universal connector for internal fixation of spine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219048782U (en) |
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2022
- 2022-12-30 CN CN202223558109.6U patent/CN219048782U/en active Active
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