CN2899739Y - Shrapnel artificial intervertebral disc - Google Patents

Abstract

The utility model relates to a spring-leaf artificial intervertebral disc, in particular to an artificial intervertebral disc used between upper and lower adjacent vertebrae of a human body, which comprises a horseshoe-shaped spring leaf, wherein the upper and lower sides of the spring leaf are respectively provided with a plurality of barbs relative to the upper and lower vertebrae ends, the two ends of the spring leaf are respectively provided with an upper fixing sheet and a lower fixing sheet, the horseshoe-shaped spring leaf can be arranged between the upper and lower vertebrae by the barbs and the fixing sheets respectively clamped on the lower side of the upper vertebra and the upper side of the lower vertebra, and an elastic body with damping effect is arranged between the upper and lower fixing sheets and can be arranged between the upper and lower vertebrae by the fixing sheets; the utility model discloses not only be convenient fairly in the use, and can select to use suitable elasticity the utility model discloses with other normal intervertebral disc cooperation functions, maintain this articular partial function, prevent that the joint from ageing in advance, further can prevent upper and lower section vertebra joint because of overuse degeneration in advance.

Description

Shrapnel artificial intervertebral disc

technical field

The utility model relates to a shrapnel type artificial intervertebral disc, in particular to an artificial intervertebral disc device with elasticity used in the intervertebral discs of the upper and lower vertebrae of the human body.

Background technique

The human body is supported by the skeleton of various parts inside, so that the muscles and blood vessels on the human body will not be stacked together due to the effect of gravity. In the skeleton of the human body, the spine is the most important part. It consists of the medulla Extending down to the thigh, there are many nerves in the spine, and it is formed by the connection of several vertebrae. There is an intervertebral disc between the adjacent upper and lower vertebrae. The intervertebral disc is quite elastic and acts as a buffer between the upper and lower vertebrae. , when any one of the intervertebral discs is diseased or aging, it will cause inconvenience to the human body, and the density of the intervertebral discs will deteriorate or change, most often in the lower spine (lumbar spine), and then in the neck (cervical spine) .

Taiwan Invention No. 83107875 and Announcement No. 343916 Invention Patent Case are an artificial intervertebral disc, which mainly includes:

a first member for engaging a first vertebra having a first articular surface, a first posterior end and a first anterior end, the two ends defining a transverse midline therebetween equidistant from the first posterior end and the first anterior end;

a second member for engaging a second vertebra having a second articular surface facing the first articular surface and a second posterior end and an anterior end juxtaposed with the corresponding first posterior end and first anterior end; and

a ball and socket joint between the first and second articular surfaces of the first and second members and between the midline and the first posterior end, the ball and socket joint being configured to allow rotation between the first and second members Relative rotation between a first axis parallel to the transverse midline and a second axis perpendicular to the first axis and located in the plane of the sagittal process of the spine, wherein an oblique angle from the ball-and-socket joint of the first and second articular surfaces faces the respective first or the second articular surface and completely surrounds the joint, and the other of the first and second articular surfaces is generally flat about the joint;

However, its disadvantages are:

1. The intervertebral disc is only artificially placed between the upper and lower vertebrae. Because there is no elastic cushioning design of the original human intervertebral disc, the original joint will lose all cushioning functions and cannot cooperate with other normal intervertebral discs to work together and age prematurely.

2. Because the original joint loses its function, the upper and lower joints will have to assume the functions of the original joints, and the upper and lower joints will degenerate early due to excessive use.

3. Human organs will gradually age with age, and the aforementioned artificial intervertebral discs cannot be used in conjunction with the diseased condition of the patient or the degree of degeneration of the intervertebral disc due to age.

4. The artificial intervertebral disc is not designed to prevent excessive forward tilt of the human spine, and it is necessary to improve it.

Utility model content

In view of this, the creator started to carry out research and development, in order to solve the various problems that the above-mentioned habitual users can produce when using, through continuous experiments and efforts, finally developed the utility model.

The main purpose of this utility model is to provide a shrapnel type artificial intervertebral disc to improve the above-mentioned problems. The artificial intervertebral disc with elastic design used in this utility model can cooperate with other normal intervertebral discs to maintain the original space between the upper and lower vertebrae. Part of the function of the joints prevents premature aging of the joints, and further prevents excessive forward tilt of the spine.

In order to achieve the above utility model purpose, the utility model takes the following technical means to achieve, the utility model includes:

The shrapnel in the shape of a side horseshoe is provided with a plurality of barbs on the upper and lower sides of the shrapnel relative to the upper and lower vertebral ends, and upper and lower fixing pieces are respectively arranged on the two ends of the shrapnel. They are respectively locked on the lower side of the upper vertebra and the upper side of the lower cone, and the side horseshoe-shaped shrapnel can be placed between the upper and lower vertebra to be used as an artificial intervertebral disc.

In another embodiment of the present utility model, screw holes can be respectively provided on the upper and lower fixing pieces, and the upper and lower fixing pieces can be screwed into the screw holes respectively to fix the upper and lower fixing pieces to the end edges of the upper and lower vertebrae to strengthen The utility model is fixed with the upper and lower vertebrae.

In yet another embodiment of the present utility model, an elastic body such as an artificial ligament can be provided between the upper and lower fixing pieces, and the upper and lower ends of the elastic body are provided with perforations. The body is fixed to the ends of the upper and lower vertebrae.

With the innovative design provided by the utility model, the specific effect improvement that can be obtained includes:

1. The elastic cushioning design of the artificial intervertebral disc of this utility model prevents the original joints of the patient from losing their cushioning function, and can be used in conjunction with other normal intervertebral discs of the patient to prevent premature aging of the joints.

2. To reduce the loss of function of the original joints, which will make the upper and lower joints have to assume the functions of the original joints, and cause the upper and lower joints to degenerate early due to overuse.

3. It is quite convenient to create and assemble, and the utility model with appropriate elasticity can be selected and used in conjunction with each other according to the age of the patient and the pathological conditions of the patient.

4. It is designed to prevent excessive forward leaning of the human spine, which can prevent the excessive opening of the upper and lower vertebrae where lesions occur.

Description of drawings

Fig. 1 is a three-dimensional appearance view of the first embodiment of the present utility model.

FIG. 2 is a side plan view of FIG. 1 .

Fig. 3 is a sectional view of the first embodiment installed on the human body.

Fig. 4 is a three-dimensional appearance view of the second embodiment of the present invention.

Fig. 5 is a perspective view of a third embodiment of the present invention.

Fig. 6 is a sectional view of the third embodiment installed on the human body.

Fig. 7 is a three-dimensional appearance view of a fourth embodiment of the present invention.

Explanation of main component symbols

10 Shrapnel 11 Barb

11A Barb 12 Barb

12A barb

20 upper fixing piece 21 screw holes

21A screw hole 30 fixing pieces

31 screw hole 31A screw hole

40 screws 50 upper vertebra

60 lower vertebra 70 elastomer

Detailed ways

Please refer to Figures 1 and 2, which are the first type of shrapnel artificial intervertebral disc of the present invention.

Implementation methods include:

An appearance similar to a horseshoe-shaped shrapnel 10, the upper and lower sides of the shrapnel 10 have a curved radian that matches the concave curvature of the upper and lower end faces of the upper and lower vertebrae, and the upper and lower sides of the shrapnel 10 are opposite to the upper and lower vertebral ends. A plurality of barbs 11,12 are respectively provided, and the upper and lower ends of the shrapnel 10 are respectively provided with fixing pieces 20,30 facing upward and downward directions, and the upper and lower fixing pieces 20,30 are provided with screw holes 21, 31;

Two screws 40, the outer diameters of which are provided with the diameters of the screw holes 21,31 on the upper and lower fixing pieces 20,30 match;

As shown in Fig. 3, when the patient installs the utility model on the intervertebral disc of pathological changes or aging, the shrapnel 10 is installed between the upper and lower relative upper vertebra 50 and lower vertebra 60, and each inverted The hooks 11 and 12 are locked on the lower side of the vertebra 50 and the upper side of the vertebra 60 respectively, and the upper and lower fixing pieces 20 and 30 can be screwed to the upper vertebra 50 and the lower vertebra respectively by screwing the screws 40 into the screw holes 21 and 31. The end edge of the vertebra 60, and use the shrapnel 10 to generate appropriate elasticity to replace the original elastic intervertebral disc of the patient;

Therefore, the utility model with appropriate elasticity is used in conjunction with other normal intervertebral discs of the patient, so that the joint between the original upper and lower vertebrae equipped with the utility model can still cooperate with the utility model to elastically move, and maintain part of the function of the joint , to prevent premature aging of the joints; and thus reduce the early degeneration of the upper and lower vertebral joints due to overuse due to partial function of the joints.

Please refer to as shown in Figure 4, which is another embodiment of the present utility model, which includes:

A shrapnel 10 with the same appearance as in Fig. 1, the curvature of the shrapnel 10 matches the concave curvature of the upper and lower end faces of the upper and lower vertebrae, and the upper and lower sides of the shrapnel 10 are respectively provided with a plurality of reverses relative to the upper and lower vertebral ends. Hooks 11A, 12A, the elastic piece 10 is provided with fixing pieces 20, 30 facing up and down, and the upper and lower fixing pieces 20, 30 are provided with a plurality of screw holes 21A, 31A;

A plurality of screws 40, the outer diameters of which are matched with the diameters of the screw holes 21A, 31A provided on the upper and lower fixing pieces 20, 30;

The difference between this embodiment and the previous embodiment lies in that the barbs 11A, 12A on the same row of the elastic piece 10A are of a plurality of types, the upper fixing piece 20A is of the type with double screw holes 21, and the lower The fixing piece 30A also has double screw holes 31, and when it is installed on the human body, it can also achieve the same purpose as the aforementioned utility model when used.

Please refer to again as shown in Fig. 5, 6, be another embodiment of the present utility model, include:

A shrapnel 10 as shown in Figure 1, the shrapnel 10 is provided with barbs 11, 12 and screw holes 21, 31;

A piece of elastic body 70, the upper and lower ends of the elastic body 70 are provided with screw holes 21, 31 to match the perforations 71, 72, this elastic body 70 has the elasticity like artificial ligament, and has reverse damping effect when stretched ;

The screw 40 that two external diameters match the diameter of the screw holes 21,31 and the through holes 71,72;

When the utility model of this embodiment is installed by the patient at the intervertebral disc of pathological changes or aging, the elastic body 70, upper, The lower fixing pieces 20 and 30 are respectively screwed to the end edges of the upper vertebra 50 and the lower vertebra 60. When the human spine leans forward excessively, the elastic body 70 will be stretched according to the opening range of the upper vertebra 50 and the lower vertebra 60 of the user. , so as to produce a damping effect on the opening range of the upper vertebra 50 and the lower vertebra 60, and limit the opening range of the upper vertebra 50 and the lower vertebra 60;

Please refer to another embodiment of the utility model structure shown in Fig. 7, including:

A shrapnel 10 with the same appearance as in Fig. 4, a plurality of barbs 11A, 12A;

During use, insert the shrapnel 10 of the present embodiment between the upper vertebra 50 and the lower vertebra 60 of the patient with special pathological changes, relying on the friction between the plurality of barbs 11A, 12A and the upper vertebra 50 and the lower vertebra 60, no need Fixing with screws can also achieve the purpose of the utility model that is the same as that of the aforementioned Fig. 1 and Fig. 4 .

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in any form. Any person with ordinary knowledge in the technical field, if within the scope of the technical features mentioned in the utility model, , Equivalent embodiments made with partial changes or modifications using the technical content disclosed in the utility model, and without departing from the technical features of the utility model, all still fall within the scope of the utility model's technical features.

Claims (7)

1. A shrapnel type artificial intervertebral disc is an artificial intervertebral disc used between the adjacent upper vertebra and the lower vertebra of the human body, characterized in that it includes: A shrapnel, the upper and lower sides of the shrapnel are respectively provided with a plurality of barbs; the two ends of the shrapnel are respectively formed with an upper fixing piece and a lower upper fixing piece facing the direction of the upper vertebra and the lower vertebra. 2. The shrapnel-type artificial intervertebral disc according to claim 1, wherein the shrapnel is horseshoe-shaped. 3. The shrapnel-type artificial intervertebral disc as claimed in claim 1, wherein the upper fixing plate and the lower fixing plate are respectively provided with screw holes, and the screw holes can be used for screw penetration. 4. The shrapnel type artificial intervertebral disc according to claim 1, 2 or 3, characterized in that: an elastic body is further provided, and the elastic body is in the shape of a sheet. 5. The shrapnel type artificial intervertebral disc as claimed in claim 4, wherein the upper and lower ends of the elastic body are perforated. 6. The shrapnel-type artificial intervertebral disc as claimed in claim 5, wherein the perforations at the upper and lower ends of the elastic body correspond to the screw holes of the upper and lower fixing pieces of the shrapnel. 7. The shrapnel-type artificial intervertebral disc as claimed in claim 6, wherein the upper and lower ends of the elastic body are perforated and the screw holes of the upper and lower fixing plates are used for screw penetration.

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