CN100420425C - Vertebra fixing reductor - Google Patents

Abstract

The invention relates to a fixing hook for vertebra and a vertebra fixing repositor. A spinal fixation reducer comprising: a fixing seat, which at least comprises two through holes; one or a plurality of rods; one or more fixed hooks, the fixed hooks comprise a combining part and a hook part, wherein the combining part at least comprises a through hole; and one or more securing mechanisms; the method is characterized in that: the rod-shaped objects substantially respectively pass through a through hole of the fixed seat and a through hole of the fixed hook combining part, and the fixing mechanisms are substantially used for fixing the rod-shaped objects respectively passing through the through hole of the fixed seat and the through hole of the fixed hook combining part at the positions of the through holes.

Description

spinal fixation reducer

technical field

The invention relates to a spinal fixation hook and a spinal fixation resetter.

Background technique

Traditional spine fixed hook itself is a hook portion, above which there is an integrally formed fixing mechanism, such as the fixing hooks of J.B.S Company of the United States and Depuy Company, which all contain a screw fixing mechanism above it; AcroMed Company of the United States, Sofamor Company of France, The fixed hooks of German Peter Brehm Company, Italian G.Cremascoli Company, and European Biomet Company all contain a fixed seat above them, and then a screw is used to fix them into one body with the fixed rod; while the fixed hooks of American Danek Company are in its A Modular fixing seat or a TSRH fixing seat is provided on the top to realize the purpose of fixing it on the fixing rod. When using these traditional fixed hooks for the spine, the fixed rods will be higher than the hook portion of the fixed hooks, and the fixing mechanism above the fixed hooks is higher than the fixed rods, that is to say, use these fixed hooks as part of the spine fixed reset device/ During the assembly, the spinal fixation resetter will be made much higher than the vertebral condyle to be fixed (the height of the vertebral condyle is approximately equal to the hook portion of the fixation hook). This shortcoming has long been criticized by the medical profession, but suffers from without any solution.

Therefore the inventor's Taiwan, China approved new patent No. 165957 stated spine fixed hook and spinal fixed reset device, its fixed hook top does not contain fixing mechanism, therefore, the spinal fixed reset device constituted by this vertebra fixed hook , the fixed rod is approximately equal to the height of the fixed hook, that is, the height of the entire spinal fixation resetter is approximately equal to the height of the fixed hook, that is, approximately equal to the height of the vertebral joints, which can solve the shortcomings of the traditional spine fixed hook. In addition, when the two fixed hooks hook the same vertebral joint at the same time, the structure will be quite complicated in the traditional spinal fixation reducer, and the height of the entire spinal fixation reducer is much higher than the hook portion of the fixation hook, but as When using the spinal fixation hook stated in this new patent No. 165957, there is no above-mentioned shortcoming.

Furthermore, the spine fixation hook and the spine fixation resetter of the present invention can not only effectively solve the problem of the known spine fixation resetter being too high, but also separate the integrally formed spine fixation hook into a rod-shaped object And a fixed hook, so that it can fully meet the needs of patients, making the production and use more economical.

Contents of the invention

One of the objectives of the present invention is to provide a spinal fixation hook.

Another object of the present invention is to provide a spinal fixation reducer.

Another object of the present invention is to provide a spinal fixation reducer with a fixed hook for a specific spine.

The spinal fixation hook of the present invention comprises a joint part and a hook part, and the hook part is intended to have a joint part at the joint with other elements/components, and the feature is that the joint part contains at least one through hole.

The shape of the above-mentioned hook portion can be any known orthopedic fixation hook shape, such as a U-shaped hook (see FIG. 1 ) or an S-shaped hook (see FIG. 3 ).

It is preferable that the above-mentioned joint part is integrally formed with the hook part. There is no fixing mechanism on the joint, such as a set screw, which only has a screw hole for a set screw to pass through the screw, and its connection with other elements/components is a passive combination, that is, other elements / The assembly itself has a fixing mechanism that can connect and fix the rod.

And the spinal fixation resetter of the present invention, it comprises:

A fixing seat, which contains at least two through holes;

one or more rods;

One or more fixing hooks, the fixing hooks have a joint part and a hook part, wherein the joint part has at least one through hole; and

one or more fixing mechanisms;

It is characterized in that: these rod-shaped objects pass through one of the through holes of the fixing seat and the through holes of the fixing hook joint in essence, and these fixing mechanisms are used to pass through the through holes of the fixing seat and the fixing hooks respectively. The rods of the hook-joint through-holes are fixed at the positions of these through-holes.

The above-mentioned fixing base is a sleeve-shaped fixing base having a plurality of through holes, wherein the perforation directions of the plurality of through holes can be substantially parallel to each other, for example, referring to Fig. 1 to Fig. 5 , or can be substantially aligned. Special angles, such as 90° (see Figure 6).

The aforementioned rod can be a fixed rod, or the rod of any fixed component or auxiliary component, such as the fixed rod of the spinal fixation reducer of the present invention (see FIGS. 1 to 6 ).

Above-mentioned fixed hook, refer to the above-mentioned spine with fixed hook described in front page.

The above-mentioned fixing mechanism can be any known fixing mechanism, such as a screw-fit fixing mechanism, and of course other fixing mechanisms, such as a TSRH fixing system, can also be used.

In order to further illustrate the present invention, it is described as follows with preferred specific examples in conjunction with drawings:

Description of drawings

Fig. 1 is a specific example of the spinal fixation reducer of the present invention.

Fig. 2 is an implementation diagram of the spinal fixation reducer shown in Fig. 1 .

Fig. 3 is a schematic diagram in which the hook portions of the two vertebral fixation hooks are both S-shaped.

Fig. 4 is a schematic diagram of the shape of the fixation hook for the spine.

Fig. 5 is a schematic diagram of the shape of the spine fixation hook.

Fig. 6 is a schematic diagram of the shape of the fixation hook for the spine.

Detailed ways

Fig. 1 is a specific example of the spinal fixation resetter of the present invention, wherein 100, 100' are each a fixed hook for the spine, 110, 110' and 150, 150' are respectively their hooks and joints, 111, 111', 112, 112', 113, 113' are the hook end, bending part and connection end of the hook part 110, 110' respectively, 151, 151' are the through holes of the joint part 150, 150', and the spine is fixed with the hook 100, 100 ' is U-shaped.

The shape of the hook portion can also be U-like (such as the hook shown in FIG. 4 , FIG. 5 , and FIG. 6 ), or S-shaped (such as the hook shown in FIG. 3 ), or other known shapes.

In addition, the fixed hooks 100, 100' for the spine of the present invention cooperate with the fixed seat 200, the fixing mechanism and the fixed rod 400, 400' to form a spinal fixation resetter; wherein 110, 110' are respectively the hooks of the two fixed hooks for the spine , 150 and 150' are the joints of the two vertebrae with fixed hooks respectively, 400 and 400' are the fixing rods of the two rods respectively; A part of the fixing screws are used to fix the two rods 400, 400' on the fixed seat, and 330 and 340 are the fixing screws of the other part of the fixing mechanism, so that the two vertebrae can be fixed on these rods with fixing hooks. superior.

Fig. 2 is the implementation diagram of the spinal fixation resetter shown in Fig. 1, wherein the labels 150, 150', 200, 310, 320, 330, 340, 400, 400' are defined as in Fig. 1; 510 and 520 are vertebral joints. The fixing method is to first adjust the fixing rods 400, 400' of the two rod-shaped objects to make them substantially meet the distance between the vertebral joints 510, 520, and fix these fixing rods on the fixing seat 200 with the fixing screws 310, 320 , and then use the two vertebrae with the fixing hooks 100, 100', set them on these fixing rods, and adjust it so that it can be fixed to hook the vertebral joints 510 and 520, and finally use the fixing screws 330 and 340 to fix the two vertebrae with the fixing hooks. fixed on the pole.

Fig. 3 is similar to Fig. 1, is that the hook portion of two vertebrae is S-shaped with fixing hook, and wherein each label definition is the same as Fig. 1.

In Fig. 4, a fixation hook for a spine in Fig. 1 is replaced by a fixation rod 400', and the rest are similar to those in Fig. 1 .

In Fig. 5, the definitions of each label are the same as those in Fig. 1. It consists of two fixing hooks, three fixing rods 400, 400', 400", a fixing base and five fixing screws 310, 315, 320, 330, 340. In Fig. 5, each of the fixing rods is substantially on the same plane on, and the two fixed hooks hook the same vertebral joint.

Figure 6 is similar to Figure 5, and the definitions of each label are also the same as those in Figure 5, but in Figure 6, the two vertebrae fixing hooks are substantially parallel to each other, but the rod-shaped object's fixing rod is not substantially on the plane formed by the two vertebrae fixing hooks , and substantially parallel to the plane, and the projection of the fixing rod on the plane formed by the two vertebrae fixing hooks is substantially perpendicular to the two vertebrae fixing hooks.

Claims (3)

1. vertebra fixing reductor comprises:

One holder, it contains two through holes at least;

One or more shaft;

One or more fixation hook, this fixation hook contains a joint portion and hook portion, and wherein this joint portion contains a through hole at least; And

One or more fixed screw;

It is characterized in that: these shafts are to pass a through hole of this holder and the through hole of this fixation hook joint portion respectively, and these fixed screws are usefulness so that pass the shaft of this holder through hole and fixation hook joint portion through hole respectively, are fixed on these through hole positions.

2. vertebra fixing reductor as claimed in claim 1, wherein this shaft is with deciding bar.

3. vertebra fixing reductor as claimed in claim 1 or 2 is characterized in that: the hook portion of this fixation hook is U-shaped, S shape, class U-shaped or class S shape.

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