CN211131336U - Sliding adjustable anterior vertebral fixing plate - Google Patents
Sliding adjustable anterior vertebral fixing plate Download PDFInfo
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- CN211131336U CN211131336U CN201921844168.5U CN201921844168U CN211131336U CN 211131336 U CN211131336 U CN 211131336U CN 201921844168 U CN201921844168 U CN 201921844168U CN 211131336 U CN211131336 U CN 211131336U
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- fixing plate
- lower fixing
- upper sliding
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Abstract
The utility model relates to a centrum front fixing plate with adjustable slide, include: the upper sliding plate is T-shaped, an upper sliding plate locking nail hole is formed in a cross piece of the upper sliding plate, first sliding grooves are formed in the lower edges of two sides of a longitudinal piece of the upper sliding plate respectively, and first sliding rails are formed in the upper edges of two sides of the longitudinal piece of the upper sliding plate respectively; the lower fixing plate is concave, the transverse sheet of the lower fixing plate is provided with a lower fixing plate locking nail hole, the inner upper edges of the two longitudinal sheets of the lower fixing plate are respectively provided with a second sliding chute, and the inner lower edges of the two longitudinal sheets of the lower fixing plate are respectively provided with a second sliding rail. The utility model discloses an upper slide and bottom plate adopt the sliding construction who has two side spouts-slide rail, and not only the slip mode is reliable and stable, can effectively provide antitorque commentaries on classics intensity moreover.
Description
Technical Field
The utility model relates to a way fixed plate before the centrum specifically is about a way fixed plate before the centrum with adjustable can realize that fixed plate length freely adjusts slides.
Background
According to the "three-column theory," the stability of the spine is provided by the anterior, medial and posterior columns together. When the vertebral body is removed, the anterior longitudinal ligament is removed or the intervertebral disc is removed, the stability of the anterior column of the vertebral body is seriously lost, and the vertebral pedicle fixation from the posterior of the vertebral column alone cannot meet the structural strength, so the anterior titanium plate is a necessary mode for maintaining the stability of the anterior column of the vertebral column.
At present, the existing front-way fixed titanium plate has the defects of single thin connection mode, poor torsional strength, small adjustable length, complex connection mode and the like.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a sliding adjustable anterior vertebral fixing plate with a sliding groove-sliding rail structure on both sides to achieve free adjustment of the length of the fixing plate.
In order to achieve the purpose, the utility model adopts the following technical proposal: a slidingly adjustable anterior vertebral fixation plate comprising: the upper sliding plate is T-shaped, an upper sliding plate locking nail hole is formed in a cross piece of the upper sliding plate, first sliding grooves are formed in the lower edges of two sides of a longitudinal piece of the upper sliding plate respectively, and first sliding rails are formed in the upper edges of two sides of the longitudinal piece of the upper sliding plate respectively; the lower fixing plate is concave, a lower fixing plate locking nail hole is formed in the transverse piece of the lower fixing plate, second sliding grooves are formed in the upper edges of the inner sides of the two longitudinal pieces of the lower fixing plate respectively, and second sliding rails are formed in the lower edges of the inner sides of the two longitudinal pieces of the lower fixing plate respectively; the longitudinal piece of the upper sliding plate is inserted into the notch of the lower fixing plate, the first sliding groove of the upper sliding plate is matched with the second sliding rail of the lower fixing plate, and the first sliding rail of the upper sliding plate is matched with the second sliding groove of the lower fixing plate, so that the upper sliding plate can move longitudinally relative to the lower fixing plate.
Preferably, the upper sliding plate and the lower fixing plate are both titanium plates with the thickness of 2.0-5.0 mm.
Preferably, when the fixing plate is used for fixing lumbar vertebrae, the cross section of the second sliding chute is designed into a flat-bottom isosceles trapezoid.
Preferably, when the sliding adjustable type vertebral body anterior fixing plate is used for fixing a thoracic vertebra, the cross section of the second sliding chute is designed into a convex-bottom isosceles trapezoid.
The utility model discloses owing to take above technical scheme, it has following advantage: 1. the utility model discloses an upper slide and bottom plate adopt the sliding construction who has two side spouts-slide rail, and not only the slip mode is reliable and stable, can effectively provide antitorque commentaries on classics intensity moreover. 2. The utility model discloses the first spout of well upper sliding plate and the second spout of bottom plate all do not have initiative pressurization structure on longitudinal direction, can provide slight longitudinal sliding space for the replacement of artificial centrum, promote the artificial centrum and remain the pressure of centrum from top to bottom and press to go into with the bone length, help maintaining the long-term stability of backbone. 3. The utility model discloses a passive self-locking function prevents that fixed centrum angulation shifts and compression shifts, when the backbone is fixed (through pedicle of vertebral arch nail stick system or back post is complete), when excessive centrum compression or back convex deformity takes place for fixed segmental spine promptly, the slight elastic deformation of upper slide and bottom plate can make the inside sliding resistance of spout sharply increase, can effectively avoid the further aversion by a wide margin of fixed centrum. 4. The utility model discloses a matched stack mode is connected, can select the different upper slide of length and lower fixed plate subassembly according to the condition in the art, can obtain the centrum front fixing plate of arbitrary length after connecting, satisfies the different rebuilding demands of defective length in the art.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic cross-sectional view of a second chute according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a second chute according to another embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended as limitations on the scope of the invention, but are merely illustrative of the true spirit of the technical solution of the invention.
As shown in fig. 1, the utility model provides a centrum forward fixing plate with adjustable slide, include: the upper sliding plate 1 is T-shaped, an upper sliding plate locking nail hole 3 is formed in a transverse plate of the upper sliding plate 1, first sliding grooves 5 are formed in the lower edges of two sides of a longitudinal plate of the upper sliding plate 1 respectively, and first sliding rails (not shown in the figure) are formed in the upper edges of two sides of the longitudinal plate of the upper sliding plate 1 respectively; the lower fixing plate 2 is concave, a transverse plate of the lower fixing plate 2 is provided with a lower fixing plate locking nail hole 4, the inner upper edges of two longitudinal plates of the lower fixing plate 2 are respectively provided with a second sliding chute 6, and the inner lower edges of the two longitudinal plates of the lower fixing plate 2 are respectively provided with a second sliding rail (not shown in the figure). The longitudinal piece of the upper sliding plate 1 is inserted into the notch of the lower fixing plate 2, the first sliding groove 5 of the upper sliding plate 1 is matched with the second sliding groove 6 of the lower fixing plate 2, and the first sliding groove of the upper sliding plate 1 is matched with the second sliding groove 6 of the lower fixing plate 2, so that the upper sliding plate 1 can move longitudinally relative to the lower fixing plate 2.
In the above embodiment, preferably, the upper sliding plate 1 and the lower fixing plate 2 both use titanium plates with a thickness of 2.0-5.0mm, so that when the fixed vertebral body is slightly angularly displaced or compressed, the upper sliding plate 1 and the lower fixing plate 2 will slightly elastically deform, so that the sliding resistance inside the sliding chute is sharply increased, and further large displacement of the fixed vertebral body can be effectively avoided
In the above embodiment, preferably, when the fixing plate is used for fixing lumbar vertebrae, the cross section of the second sliding groove 6 is designed to be a flat-bottom isosceles trapezoid (as shown in fig. 2), and when the fixing plate is used for fixing thoracic vertebrae, the cross section of the second sliding groove 6 is designed to be a convex-bottom isosceles trapezoid (as shown in fig. 3) to match the curvature of lumbar vertebrae or thoracic vertebrae, thereby reducing interference with soft tissues around the fixing plate.
Above-mentioned each embodiment only is used for explaining the utility model discloses, wherein structure, connected mode and the preparation technology etc. of each part all can change to some extent, all are in the utility model discloses equal transform and improvement of going on technical scheme's the basis all should not exclude outside the protection scope of the utility model.
Claims (4)
1. A sliding adjustable anterior vertebral fixation plate comprising:
the upper sliding plate (1) is T-shaped, an upper sliding plate locking nail hole (3) is formed in a cross piece of the upper sliding plate (1), first sliding grooves (5) are formed in the lower edges of two sides of a longitudinal piece of the upper sliding plate (1) respectively, and first sliding rails are formed in the upper edges of two sides of the longitudinal piece of the upper sliding plate (1) respectively;
the lower fixing plate (2) is concave, a lower fixing plate locking nail hole (4) is formed in a transverse sheet of the lower fixing plate (2), second sliding grooves (6) are formed in the upper edges of the inner sides of two longitudinal sheets of the lower fixing plate (2) respectively, and second sliding rails are formed in the lower edges of the inner sides of the two longitudinal sheets of the lower fixing plate (2) respectively;
the longitudinal piece of the upper sliding plate (1) is inserted into the notch of the lower fixing plate (2), the first sliding groove (5) of the upper sliding plate (1) is matched with the second sliding rail of the lower fixing plate (2), and the first sliding rail of the upper sliding plate (1) is matched with the second sliding groove (6) of the lower fixing plate (2) so that the upper sliding plate (1) can move longitudinally relative to the lower fixing plate (2).
2. The sliding adjustable anterior vertebral fixation plate of claim 1, wherein the upper sliding plate (1) and the lower fixation plate (2) are both made of titanium plates with a thickness of 2.0-5.0 mm.
3. The sliding adjustable anterior vertebral fixation plate according to claim 1, wherein the cross section of the second sliding groove (6) is designed as a flat bottom isosceles trapezoid when the fixation plate is used for lumbar vertebra fixation.
4. The sliding adjustable anterior vertebral fixation plate according to claim 1, wherein the cross section of the second sliding groove (6) is designed as a convex-base isosceles trapezoid when the fixation plate is used for fixation of thoracic vertebrae.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921844168.5U CN211131336U (en) | 2019-10-30 | 2019-10-30 | Sliding adjustable anterior vertebral fixing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921844168.5U CN211131336U (en) | 2019-10-30 | 2019-10-30 | Sliding adjustable anterior vertebral fixing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211131336U true CN211131336U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921844168.5U Active CN211131336U (en) | 2019-10-30 | 2019-10-30 | Sliding adjustable anterior vertebral fixing plate |
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| CN (1) | CN211131336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110638514A (en) * | 2019-10-30 | 2020-01-03 | 北京大学人民医院(北京大学第二临床医学院) | Sliding adjustable anterior vertebral fixing plate |
-
2019
- 2019-10-30 CN CN201921844168.5U patent/CN211131336U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110638514A (en) * | 2019-10-30 | 2020-01-03 | 北京大学人民医院(北京大学第二临床医学院) | Sliding adjustable anterior vertebral fixing plate |
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