TW201417763A - Fixation plate for fracture - Google Patents

Abstract

A fixation plate for fracture is can stable fix on a surface of a bone. The fixation plate for fracture has an indentation curved face, a protruding curved face, two relative long sides and two relative short sides, the two relative long sides and the two relative short sides is located between on the indentation curved face and the protruding curved face. Several grooves are formed between on the two relative short sides, and two relative ends of the several grooves are extending to until the two relative long sides, respectively.

Description

Bone fixation plate

The invention relates to a bone fixation plate, in particular to a bone fixation plate which can be firmly attached to a bone surface and has better positioning property.

Generally, in the treatment of patients with bone injury, the bone fixation plate is often used to stabilize the affected part, so that the bone damage does not break again after the treated joint, and the healing of the affected part of the bone injury patient can be accelerated thereby.

As shown in Fig. 1, the Patent Publication No. 478348 discloses a bone fixing plate 9 having a plurality of grooves 91 and a plurality of through holes 92 on one surface thereof. The plurality of grooves 91 are along the surface. The bone fixing plate 9 is disposed in the radial direction, and its continuous hole 92 is further connected to an oblique sleeve 93. In this way, when the bone injury plate 9 is used to fix the bone injury site, the oblique sleeve 93 can be first implanted into the appropriate position in the bone, and the bolt is inserted into the bone via the oblique sleeve 93 to be locked. Then, the bone fixing wire 9 is wound and snapped into the groove 91, so that the bone fixing plate 9 is bound to the outside of the bone, and then the bolts are passed through the through holes 92 to further position the bone fixing plate 9.

However, since the above-mentioned bone fixing plate 9 is only a flat plate structure, such that it fails to conform to the bone in a sufficiently matched shape in accordance with the special curvature of the bone shape; therefore, the bone fixing plate 9 is often easily limited to The design of the flat type produces slippage after conforming to the bone surface, and its positioning is obviously poor. Moreover, since the plurality of grooves 91 are only disposed transversely on one surface of the bone fixing plate 9 and do not extend across the side edges thereof toward the opposite surface, so as to be stuck in the plurality of grooves The winding in 91 is easy to stretch to the side edge of the bone fixing plate 9 When the sliding occurs, the effect of winding the tying is not obvious, and the bone fixing plate 9 is derived from the loosening of the bone damage.

As shown in FIG. 2, the U.S. Patent No. 4,790,302 discloses a bone fixation plate 8 suitable for intra-bone fixation, the bone fixation plate 8 having a concave curved surface 81, a convex curved surface 82 and a plurality of through holes 83. A plurality of through holes 83 penetrate the concave curved surface 81 and the convex curved surface 82. In this way, the bone fixing plate 8 can be placed in the bone so as to be in close contact with the inner circumference of the bone by the convex curved surface 82, and the bone fixing plate 8 is positioned by screwing through the through holes 83.

However, the above-mentioned bone fixing plate 8 is only suitable for intra-bone fixation. If it is selected as a bone external fixation plate and tied with a wire, it is easy to be a smooth surface due to the convex curved surface 82 of the bone fixation plate 8, and the wire is roped. After the kidnapper is loose or slipped, the positioning effect of the bone fixing plate 8 is obviously not good. Moreover, the bone fixing plate 8 still needs to be fixed by the screw locking method, so that the complicated manufacturing process is not only complicated when the through hole 83 is worn, but also the operating time is extended during the surgical processing, and the processing efficiency is lowered. .

In view of this, it is indeed necessary to develop a novel bone fixing plate to stabilize the fixing position in a simple form, thereby solving various problems as described above.

SUMMARY OF THE INVENTION The main object of the present invention is to solve various problems as described above, and to provide a bone fixation plate which can ensure adhesion to a bone surface without loosening to have a better stable fixation property.

A second object of the present invention is to provide a bone fixation plate which can eliminate the complexity of positioning by bolts and thereby improve the efficiency of the operation.

In order to achieve the aforementioned object, the bone fixation plate of the present invention has a relative a concave curved surface and a convex curved surface, wherein the concave curved surface and the convex curved surface are connected with two opposite long side edges and two opposite short side edges, and the convex curved surface is provided with a plurality of paths between the opposite short side edges a groove, and opposite ends of each of the grooves extend to the opposite long side edges, respectively.

Wherein, the plurality of grooves are parallel to each other.

Alternatively, the plurality of grooves are arranged in a mesh shape; and the plurality of grooves are preferably arranged in a diagonally staggered network.

Wherein, the groove is recessed inward from the convex curved surface. Alternatively, the convex curved surface may further be provided with a plurality of ridges protruding outward from the convex curved surface, and the groove is formed between any two adjacent ridges.

Wherein, the concave curved surface is a rough surface. Alternatively, the concave curved surface may be interspersed with a plurality of bumps to form a rough posture.

Wherein, the concave curved surface and the convex curved surface form a rounded corner.

Wherein, the two opposite long side edges are rounded.

Wherein, the two opposite short side edges are rounded.

The above and other objects, features, and advantages of the present invention will become more apparent from the claims. It is a preferred embodiment of the present invention. The bone fixation plate 1 is suitable for external fixation, and the bone fixation plate 1 can be selected from a body made of various biocompatible materials.

The bone fixation plate 1 can be an arc-shaped plate having a relatively concave and convex surface as shown in the figure. The bone fixing plate 1 has a concave curved surface 11 and a convex surface The curved surface 11 of the present embodiment is the inner surface of the bone fixing plate 1 for adhering to the bone, and the convex curved surface 12 is the outer surface of the bone fixing plate 1 for the wire Winding; wherein the curvature of the curved plate formed by the concave curved surface 11 and the convex curved surface 12 can be moderately changed according to the bone shape at the bone damage, only to penetrate the concave curved surface 11 and the bone The appearance is matched with each other, and the combination is guided by the convex curved surface 12 to guide the wire rope to be wounded. This is understood by those skilled in the art and will not be described again.

And the concave curved surface 11 and the convex curved surface 12 are connected with two opposite long side edges 13 and two opposite short side edges 14, and the opposite long side edges 13 are parallel to each other in the y direction shown in the drawing. The short side edges 14 which extend and are opposite to each other are connected to each other, thereby limiting the size range of the bone fixing plate 1. Preferably, the two opposite long side edges 13 and the two opposite short side edges 14 can be appropriately expanded according to actual needs, and are for reference only.

As shown in FIG. 3, the convex curved surface 12 is provided with a plurality of grooves 15 between the two opposite short side edges 14. The plurality of grooves 15 are preferably from the convex curved surface 12 as shown in FIG. The inner ends are recessed, and opposite ends of each of the grooves 15 extend to the opposite long side edges 13, respectively. The plurality of grooves 15 can be selected to be equidistantly arranged on the convex curved surface 12 as shown in FIG. 3, and the plurality of grooves 15 are preferably parallel to each other to facilitate the wire jam.

In addition, the concave curved surface 11 of the bone fixing plate 1 can also be a rough surface R as shown in FIG. 5, so as to increase the frictional force when the concave curved surface 11 contacts the bone surface by the rough surface R. Further, the bone fixing plate 1 is prevented from slipping. The rough surface R may be formed by directly grinding the concave curved surface 11 or by scattering a plurality of convex particles on the concave curved surface 11; above, the rough surface R only refers to all types of designs with increased friction. No need to go An example can also be fully understood by those skilled in the art.

Moreover, the present invention can also selectively form a round as shown in FIG. 3 at the corners of the concave curved surface 11 and the convex curved surface 12; and, the opposite long side edges 13 can also be The two opposite short side edges 14 form a rounded corner. Thereby, the sharp end and the edge of the bone fixing plate 1 can be prevented from being damaged by the rounded design. Wherein, the formation position of the rounded corners can be configured according to actual needs, and is not limited to being formed separately or simultaneously.

Referring to Figures 5 and 6, the bone fixation plate 1 of the present invention is not limited to the number of bone fixation plates 1 when the bone fractured patient is used for fixation, and the operator first selects The bone fixation plate 1 having a suitable curvature and sufficient to match the bone injury is implemented; this embodiment is shown in conjunction with the drawings, and the following description is made with the use of the two bone fixation plates 1.

The two-bone fixation plate 1 is placed in the bone injury site of the bone 2 as shown in FIG. 5 so that the two-bone fixation plate 1 can correspond to each other, and the two-bone fixation plate 1 is temporarily fixed by the instrument. The relatively concave curved surface 11 of the two-bone fixation plate 1 collectively sandwiches the bone injury portion of the tibia 2; further, the operator guides the wire 3 along the bone fixation plate 1 with the surgical instrument (ie, as shown in FIG. 6 The convex curved surface 12 located above the bone extends into the groove 15 and stretches the wire 3 below the bone shown in the figure, so that the wire 3 surrounds the other bone fixing plate 1 (ie, Figure 6) The convex curved surface 12 shown below the bone is clamped in the groove 15; at this time, the operator can use the surgical instrument to consolidate the two ends of the wire 3, and repeatedly operate the other wire 3 based on The above concept is used for the action of winding and consolidating until the two bone fixation plate 1 and the surface of the bone 2 are firmly adhered, and the positioning of the two bone fixation plate 1 at the bone damage is completed.

In this way, the bone fixation plate 1 of the present invention can rely on its arc shape. Having an opposite concave curved surface 11 and a convex curved surface 12 to ensure that the bone fixing plate 1 can be matched with the surface of the bone 2 by the concave curved surface 11; and, the plurality of grooves 15 are extended toward the long side edge 13 The wire 3 is more likely to be caught in the groove 15 under the guidance of the convex curved surface 12, and is pulled along the groove 15 toward the long side edge 13 to prevent the wire rope 3 from slipping at the side edge. In the case where the bone fixation plate 1 does not loosen with the surface of the bone 2, the bone fixation plate 1 can have a better stable fixation property.

Based on the foregoing concept, the bone fixation plate 1' of the present invention may further have another embodiment. The present embodiment has a concave curved surface 11' and a convex curved surface 12' as shown in FIG. The two opposite long side edges 13' and the two opposite short side edges 14'; the difference from the foregoing embodiment is that the present embodiment selects the plurality of grooves 15' formed in the convex curved surface 12'. It is arranged in a mesh shape, especially in the form of a diagonally staggered mesh as shown in the figure, so as to increase the stability of the wire bundle by interlacing the wires.

What is more, the bone fixing plate 1" of the present invention can further provide a plurality of ridges 16" on the convex curved surface 12" as shown in Fig. 8, and the plurality of ridges 16" are each from the convex curved surface 12" A groove 15" is formed between the two adjacent ribs 16". Thus, the embodiment can also have the wire rope winding as described in the foregoing embodiment. Sliding is generated on the side edges thereof to effectively improve the effect of the bone fixation plate 1" and the bone surface in a stable position.

The bone fixation plates 1', 1" of the above different embodiments can still be fixed for the bone damage by the same operation method, which can be fully understood by those skilled in the art, and the same design and use will not be repeated. step.

Accordingly, the bone fixation plate of the present invention not only ensures the adhesion to the bone surface without loosening, so that the bone fixation plate has a better stable fixation property; In addition, the bone fixation plate of the invention can save the traditional complicated effect of bolt positioning, thereby improving the efficiency of the operation.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

〔this invention〕

1, 1', 1" ‧ ‧ bone fixation plate

11, 11', 11" ‧ ‧ concave surface

12, 12', 12" ‧ ‧ convex surface

13, 13', 13" ‧ ‧ long side

14, 14', 14" ‧ ‧ short side edges

15, 15', 15" ‧ ‧ trench

16" ‧ ‧ ribs

2‧‧‧ bone

3‧‧‧Wire

[study]

9‧‧‧ bone fixation plate

91‧‧‧ Groove

92‧‧‧through holes

93‧‧‧inclined sleeve

8‧‧‧Bone fixation plate

81‧‧‧ concave surface

82‧‧‧ convex surface

83‧‧‧Tongkong

Figure 1: A schematic view of a conventional bone fixation plate.

Figure 2: A schematic perspective view of another bone fixation plate.

Figure 3 is a perspective view of the bone fixation plate of the present invention.

Fig. 4 is a cross-sectional view of the bone fixation plate of the present invention taken along the 4-4 direction of Fig. 3.

Figure 5: Schematic diagram 1 of the use of the bone fixation plate of the present invention.

Figure 6: Schematic diagram 2 of the use of the bone fixation plate of the present invention.

Figure 7 is a perspective view of a bone fixation plate according to another embodiment of the present invention.

Figure 8 is a perspective view of a bone fixation plate according to still another embodiment of the present invention.

1‧‧‧ bone fixation plate

11‧‧‧ concave surface

12‧‧‧ convex surface

13‧‧‧Long side

14‧‧‧ Short side

15‧‧‧ trench

Claims (11)

A bone fixing plate has a concave surface and a convex curved surface, and the concave curved surface and the convex curved surface are connected with two opposite long side edges and two opposite short side edges, and the convex curved surface is opposite to the two A plurality of grooves are disposed between the short side edges, and opposite ends of each of the grooves extend to the opposite long side edges, respectively. The bone fixation plate of claim 1, wherein the plurality of grooves are parallel to each other. The bone fixation plate according to claim 1, wherein the plurality of grooves are arranged in a mesh shape. The bone fixation plate according to claim 3, wherein the plurality of grooves are arranged in a diagonally staggered network. The bone fixation plate of claim 1, 2, 3 or 4, wherein the groove is recessed inwardly from the convex curved surface. The bone fixing plate according to the first, second, third or fourth aspect of the invention, wherein the convex curved surface is further provided with a plurality of convex strips, and the protruding strip is convexly outwardly formed from the convex curved surface, and The trench is formed between two adjacent ridges. The bone fixation plate of claim 1, 2, 3 or 4, wherein the concave curved surface is a rough surface. The bone fixation plate according to claim 1, 2, 3 or 4, wherein the concave curved surface is dispersed with a plurality of convex particles. The bone fixation plate of claim 1, 2, 3 or 4, wherein the concave curved surface forms a rounded corner at a corner of the convex curved surface. A bone fixation plate according to claim 1, 2, 3 or 4 of the patent application, The two opposite long side edges are all rounded. The bone fixation plate of claim 1, 2, 3 or 4, wherein the two opposite short side edges are rounded.