CN202776643U - Angle-adjustable lumbar intervertebral bone grafting device - Google Patents
Angle-adjustable lumbar intervertebral bone grafting device Download PDFInfo
- Publication number
- CN202776643U CN202776643U CN 201220442758 CN201220442758U CN202776643U CN 202776643 U CN202776643 U CN 202776643U CN 201220442758 CN201220442758 CN 201220442758 CN 201220442758 U CN201220442758 U CN 201220442758U CN 202776643 U CN202776643 U CN 202776643U
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- angle
- plectane
- bone grafting
- grafting device
- lumbar vertebra
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Abstract
The utility model discloses an angle-adjustable lumbar intervertebral bone grafting device which comprises an angle adjusting component and a height adjusting component connected with the angle adjusting component, wherein the angle adjusting component comprises a circular plate, a screw and a rotating shaft; the screw is inserted into the circular plate; and the rotating shaft penetrates through the circular plate and the screw along the radial direction of the circular plate. The angle-adjustable lumbar intervertebral bone grafting device is designed according to the shape of a lumbar vertebra body; the circular plate obtains the change of any angle by adjusting elements inside the device so as to meet the demands of an inherent angle and height of each section of intervertebral space and orthopaedic treatment of lumbar vertebra.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, is specifically related to strut bone grafting device between the adjustable lumbar vertebra of a kind of angle.
Background technology
Lumbar spinal fusion is the standard art formula of the multiple degenerative diseases of lumbar vertebrae for the treatment of, and wherein the fusion rate with interbody fusion is the highest, and curative effect is the most definite.Fusion device between lumbar vertebra (Cage) is to be specifically designed to the medical implant that lumbar intervertebral merges, and can play the effect of supporting intervertebral space, is widely used clinically.
Fusion device is made by PEEK material or carbon fibre material between lumbar vertebra commonly used at present, and its shape of vowing the dress face is generally rectangle or slightly is fusiformis.The vertebral body surface of bone is not parallel about the interspace of lumbar vertebrae in clinical practice, and especially at hypomere lumbar vertebra and waist sacrum intervertebral space, there is intrinsic subtended angle in these sections, and vary with each individual.The shape of fusion device can not guarantee to fit tightly with the surface of bone of the neighbouring vertebral body of all patient treatment sections between the lumbar vertebra of using at present, and the possibility that causes the fusion device sedimentation to enter vertebral body is arranged, and the risk that has increased the fusion device displacement and do not merged, and affects operative effect.If for the reset intervertebral space of increase binding face according to the Invasive lumbar fusion device of present application resets, it is unusual that lumbar curvature is occurred, and affects the balance of whole trunk in the operation.In addition, strut bone grafting device between the various lumbar vertebras that also require the individuation adjustable-angle with degenerative diseases of lumbar vertebrae or the wound of deformity of spine.
As shown in Figure 1, the intervertebral space of lumbosacral angle all can be divided into the triangle body of an angle [alpha] and highly be the cylinder of h from geometrical relationship arbitrarily.
Use at present the Invasive lumbar fusion device of comparative maturity in the surgical operation, the deficiency of its maximum is no matter adopt card slot type, or groove is fixed, and the height that it is adjusted and angle are quantized, and namely adjusting resulting angle must be the integral multiple of default minimum constructive height and minimum angles.So, the universality of its application is extremely restricted, for the lumbosacral angle subtended angle not the patient in its range of accommodation be willing and yet unable to help.
The utility model content
This utility model relates between the adjustable lumbar vertebra of a kind of angle and struts bone grafting device, this device is according to the shape design of lumbar vertebra vertebral body, element by adjusting device inside, so that plectane obtains at any angle variation, to adapt to the orthopedic needs of intrinsic angle, height and lumbar vertebra of each sections intervertebral space of lumbar vertebra.
In order to achieve the above object, this utility model is achieved through the following technical solutions:
Strut bone grafting device between the lumbar vertebra that a kind of angle is adjustable, be characterized in, the height adjustment parts that comprise the angle adjustment parts and link to each other with the angle adjustment parts;
Described angle adjustment parts comprise plectane, screw rod and rotating shaft; Described screw rod is inserted in the plectane;
Described rotating shaft passes plectane and screw rod along the plectane radial direction.
Described plectane centre is provided with spherical concave surface.
Described screw rod one end is made as spherical convex surface, and the spherical convex surface of this sphere convex surface and described plectane is suitable, and the described screw rod other end is provided with external screw thread.
Described angle adjustment parts also comprise the first groove, and it is arranged on the plectane bottom.
Described height adjustment parts comprise supporting seat and are arranged on supporting seat top the second groove.
Described supporting seat is provided with groove, offers female thread at described groove inwall, and described female thread and described external thread of screw are suitable.
Strut bone grafting device between the lumbar vertebra that a kind of angle of this utility model is adjustable, this device is according to the shape design of lumbar vertebra vertebral body, element by adjusting device inside, so that the plectane acquisition is arbitrarily angled, the variation of height, with intrinsic angle and the orthopedic needs of lumbar vertebra that adapt to each sections intervertebral space of lumbar vertebra.
Description of drawings
Fig. 1 is interspace of lumbar vertebrae geometric model figure;
Fig. 2 struts the bone grafting device structural representation between the adjustable lumbar vertebra of a kind of angle of this utility model;
Fig. 3 is the front view of this utility model angle adjustment parts;
Fig. 4 is the side view of this utility model angle adjustment parts;
Fig. 5 is the top view of this utility model angle adjustment parts;
Fig. 6 is the front view of this utility model height adjustment parts;
Fig. 7 is the side view of this utility model height adjustment parts;
Fig. 8 is the upward view of this utility model angle adjustment parts.
The specific embodiment
Below in conjunction with accompanying drawing, by describing a better specific embodiment in detail, this utility model is further elaborated.
Such as Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, strut bone grafting device between the lumbar vertebra that a kind of angle is adjustable, the height adjustment parts that comprise the angle adjustment parts and link to each other with the angle adjustment parts; Described angle adjustment parts comprise plectane 11, screw rod 12, rotating shaft 13 and the first groove 14; Described screw rod 12 is inserted in the plectane 11; Described rotating shaft 13 passes plectane 11 and screw rod 12 along plectane 11 radial direction, and this rotating shaft 13 is a screw.Described plectane 11 centres are provided with spherical concave surface.Described screw rod 12 1 ends are made as spherical convex surface, and the spherical convex surface of this sphere convex surface and described plectane 11 is suitable, and described screw rod 12 other ends are provided with external screw thread; The first groove 14 is arranged on plectane 11 bottoms.
Such as Fig. 6, Fig. 7, shown in Figure 8, described height adjustment parts comprise supporting seat 21 and are arranged on supporting seat 21 tops the second groove 22.Described supporting seat 21 is provided with groove 211, offers female thread at described groove 211 inwalls, and described female thread and described screw rod 12 external screw threads are suitable.
When this utility model is done clinical practice, adjust plectane 11, make the intrinsic angle of angle that plectane 11 and screw rod 12 form and interspace of lumbar vertebrae suitable, namely suitable with geometric model α angle, Fig. 1 interspace of lumbar vertebrae, adjust angle after, nut is on screw, fix plectane 11, then rotary support seat 21, the height of the elevating control interspace of lumbar vertebrae by top and the bottom pitch, be Fig. 1 interspace of lumbar vertebrae geometric model height h, about by the first groove 14, the second groove 22 this utility model being fixed at last
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (6)
1. strut bone grafting device between the adjustable lumbar vertebra of an angle, it is characterized in that the height adjustment parts that comprise the angle adjustment parts and link to each other with the angle adjustment parts;
Described angle adjustment parts comprise plectane (11), screw rod (12) and rotating shaft (13); Described screw rod (12) is inserted in the plectane (11);
Described rotating shaft (13) passes plectane (11) and screw rod (12) along plectane (11) radial direction.
2. strut bone grafting device between the adjustable lumbar vertebra of angle as claimed in claim 1, it is characterized in that described plectane (11) centre is provided with spherical concave surface.
3. strut bone grafting device between the adjustable lumbar vertebra of angle as claimed in claim 2, it is characterized in that, described screw rod (12) one ends are made as spherical convex surface, and the spherical convex surface of this sphere convex surface and described plectane (11) is suitable, and described screw rod (12) other end is provided with external screw thread.
4. strut bone grafting device between the adjustable lumbar vertebra of angle as claimed in claim 1, it is characterized in that described angle adjustment parts also comprise the first groove (14), it is arranged on plectane (11) bottom.
5. strut bone grafting device between the adjustable lumbar vertebra of angle as claimed in claim 3, it is characterized in that described height adjustment parts comprise supporting seat (21) and are arranged on supporting seat (21) top the second groove (22).
6. strut bone grafting device between the adjustable lumbar vertebra of angle as claimed in claim 5, it is characterized in that, described supporting seat (21) is provided with groove (211), offers female thread at described groove (211) inwall, and described female thread and described screw rod (12) external screw thread are suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442758 CN202776643U (en) | 2012-09-03 | 2012-09-03 | Angle-adjustable lumbar intervertebral bone grafting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220442758 CN202776643U (en) | 2012-09-03 | 2012-09-03 | Angle-adjustable lumbar intervertebral bone grafting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202776643U true CN202776643U (en) | 2013-03-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220442758 Expired - Fee Related CN202776643U (en) | 2012-09-03 | 2012-09-03 | Angle-adjustable lumbar intervertebral bone grafting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202776643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546228A (en) * | 2015-01-07 | 2015-04-29 | 北京爱康宜诚医疗器材股份有限公司 | Adjustable self-stabilizing type artificial sacrum prosthesis |
-
2012
- 2012-09-03 CN CN 201220442758 patent/CN202776643U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104546228A (en) * | 2015-01-07 | 2015-04-29 | 北京爱康宜诚医疗器材股份有限公司 | Adjustable self-stabilizing type artificial sacrum prosthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20130903 |