TW201521670A - Bone support device - Google Patents

Abstract

A bone support device comprises a central module and at least one outer-layered module. The central module comprises a plurality of central geometric holes. The outer-layered modules are deployed outwardly and layer-by-layer from the central module, and each outer-layered module comprises a plurality of outer-layered geometric holes. A specific outer-layered module configured in the outer-layered modules contains outer-layered geometric holes with specific configurations of hole shape, hole size, hole spacing and porosity. At least one of the configurations is different from the hole configurations in the central module.

Description

Bone support device

The present invention relates to a bone support device, and more particularly to a bone support device suitable for bone grafting, depending on different configurations of the hole conditions.

In the prior art, the bone support component for filling and supporting the bone defect is often made of a biocompatible material such as titanium alloy or polymer material, which is in the form of a block and has one or two larger ones at the center. The pores are designed to be embossed, dentate or spiral, and the outer shape is combined with a fine pore structure. When the bone support component is implanted into the bone, the small pores are densely combined with the bone cells. The external shape, such as a tooth or a spiral column, provides the bone support assembly with the mutual engagement and tightness of the bone.

However, titanium alloy material and bone integration effect is good, but the elastic modulus is too high (about 110GPa or more) to produce stress shielding effect, which is easy to cause bone loss and interface pressure fracture. The elastic modulus of the polymer material is more suitable for the human body (about 3.6 GPa), but the affinity with bone cells is poor. Moreover, if a spiral column design is used to enhance the integration effect with the bone, the manufacturing process and cost are relatively high, and the yield is also poor.

In view of the above, the present invention discloses a structural design of a bone support device for improving the integration characteristics between the bone support device and the bone by the hole arrangement condition.

The bone support device disclosed in the present invention has a central module and more than one outer layer module. The central module has a plurality of central geometric holes hole. The outer layer module is disposed on the outer periphery of the central module layer by layer from the central module, and each outer layer module has a plurality of outer geometric holes. Wherein, all of the outer module has a specific module of the outer layer, and at least one of the hole shape, the hole size, the hole spacing and the porosity of the outer geometric hole is different from the central geometric hole configuration condition of the central module.

The bone supporting device disclosed in the present invention uses the shape, size and density of the hole in the central and outer ring portions to adjust the elastic modulus of the bone supporting device to meet the mechanical requirements of the transplanting site. The part providing the supporting function provides a stronger supporting force with a denser structure, and the relatively unstressed part can be selected with a relatively low-density structural design suitable for bone growth, so that the bone can grow smoothly and the stability of the bone is improved. Sex. Secondly, by adjusting the shape, size and density of the holes, it is beneficial for the manufacturer to provide a customized structural design according to the needs of medical personnel or patients, or to mass-produce the products according to the common structural characteristics of the bones. design.

100,100a, 100b, 100c, 100d‧‧‧ bone support device

110a, 110b, 110c, 110d‧‧‧ central module

120a, 120b, 120c‧‧‧ outer module

121a, 121b, 121c, 121d, 121e‧‧‧ first layer outer module

122a, 122b, 122c, 122d, 122e‧‧‧ second layer outer module

123‧‧‧Three-layer outer module

130a, 130b‧‧‧Central geometric holes

140a, 140b‧‧‧ outer geometric holes

141a, 141b‧‧‧ outer geometric holes of the first outer layer module

142a, 142b‧‧‧ outer geometric holes of the second outer module

143‧‧‧Outer geometric holes in the third outer module

1 is a schematic view showing the first structure of an embodiment of a bone supporting device of the present invention.

2 is a schematic view showing the second structure of the embodiment of the bone supporting device of the present invention.

3 is a schematic view showing the third structure of the embodiment of the bone supporting device of the present invention.

4 is a schematic view showing the fourth structure of the embodiment of the bone supporting device of the present invention.

FIG. 5 is a schematic view showing the fifth structure of the embodiment of the bone supporting device of the present invention.

6 is a schematic view showing the sixth structure of the embodiment of the bone supporting device of the present invention.

FIG. 7 is a schematic view showing the seventh structure of the embodiment of the bone supporting device of the present invention.

FIG. 8 is a schematic view showing the eighth structure of the embodiment of the bone supporting device of the present invention.

9 is a schematic view showing the first transplantation of the embodiment of the bone support device of the present invention.

FIG. 10 is a schematic view showing the second embodiment of the embodiment of the bone supporting device of the present invention.

11 is a schematic view showing a third embodiment of the embodiment of the bone support device of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described in detail below with reference to the drawings.

1 is a schematic view showing the first structure of an embodiment of a bone supporting device of the present invention. The bone support device 100a includes a central module 110a and at least one outer layer module 120a. In this embodiment, the outer layer module 120a is temporarily described. In particular, the shape of the bone support device of the present invention can be designed according to the defect of the patient's bone, and is not limited to the cube disclosed in the drawings, and is not limited to the symmetrical shape.

The central module 110a has a plurality of central geometric holes 130a. The central geometric hole 130a in FIG. 1 is circular, but the shape of the holes may be square, diamond, polygonal or according to the needs of the bone graft. Geometry. Moreover, the central geometric hole 130a is not limited by a single shape, and different shape hole configurations can be simultaneously adopted according to actual use requirements. Preferably, the central geometric holes 130a extend through the central module 110a.

The outer layer module 120a is disposed on the periphery of the central module 110a layer by layer, and each outer layer module 120a also has a plurality of outer geometric holes 140a. In some embodiments, the outer geometric holes 140a of the same outer layer module 120a may have the same shape configuration or a different shape configuration. The outer geometric hole 140a in FIG. 1 is exemplified by a square shape, but the shape of the hole may be a circle, a diamond shape, a polygonal shape other than a square shape, or a shape formed according to the needs of the bone graft portion, and is not shaped. limit. Moreover, the outer geometric holes 140a are not limited by a single shape, and different shapes of hole configurations can be simultaneously used depending on actual use requirements. In other embodiments, the outer geometric holes 140a and the central geometric holes 130a may be the same or different hole shapes. Preferably, the outer geometric holes 140a extend through the outer layer module 120a.

2, the central geometric hole 130a and the outer geometric hole 140a are configured by, but not limited to, equal gaps, and the arrangement gaps of the central geometric hole 130a and the outer geometric hole 140a may be the same or different.

Continuing to refer to FIG. 2, an embodiment of a bone supporting device of the present invention is illustrated. The second structural diagram, the bone support device 100b is different from the structure shown in FIG. 1 in that the central geometric hole 130b of the central module 110b is configured to exhibit a partial equal gap combined with a local differential gap configuration. In some embodiments, the central geometric aperture 130b is also configured as a distinct gap.

Similarly, the outer geometric holes 140b of the outer layer module 120b of the same layer may exhibit partial equal gaps and partial distinct gap configurations, or may exhibit different gap configurations. That is, the central geometric hole may exhibit at least one of an equal gap configuration, a different gap configuration, a partial equal gap, and a partial differential gap configuration, and the outer geometric holes of the outer layer module of the same layer may exhibit an equal gap configuration, At least one of a different gap configuration, a partial equal gap, and a local differential gap configuration.

3 is a schematic view showing a third structural view of the embodiment of the bone supporting device of the present invention. The bone supporting device 100c has a first outer layer module 121a and a second outer layer module 122a. .

In this example, the outer geometric hole 141a of the first outer layer module 121a of FIG. 3 is a diamond shape, and the outer geometric hole 142a of the second outer layer module 122a is circular. In other embodiments, the outer geometric holes 141a of the first outer layer module 121a and the outer geometric holes 142a of the second outer layer module 122a may have the same hole shape.

Moreover, the outer geometric holes 141a of the first outer layer module 121a and the outer geometric holes 142a of the second outer layer module 122a may have the same hole shape, hole size, hole gap and porosity, or At least one condition is different.

4 is a schematic view of a fourth embodiment of the bone support device of the present invention. The bone support device 100d has a first outer layer module 121b and a second outer layer module 122b. And a third layer outer layer module 123.

Similar to FIG. 3, the outer layer geometric hole 141b of the first outer layer module 121b is square, and the second outer layer module 122b is The outer geometric holes 142b are circular, and the outer geometric holes 143 of the third outer layer module 123 are also circular. That is to say, the outer geometric holes of the outer layer modules of different levels may be the same or different hole shapes. Moreover, the outer geometric hole 141b of the first outer layer module 121b, the outer geometric hole 142b of the second outer layer module 122b and the outer geometric hole 143 of the third outer layer module 123 have a hole shape, a hole size, The conditions such as the pore gap and the porosity may be the same as the total number, or at least one of the pore conditions is different.

However, at least one outer layer specific module of all outer layer modules has at least one of a hole shape, a hole size, a hole spacing and a porosity of the outer geometric hole and the central geometric hole of the central module. different. In FIG. 3, the outer layer specific module may be at least one of the first outer layer module 121a and the second outer layer module 122a. In FIG. 4, the outer layer specific module may be at least one of the first outer layer module 121b and the third outer layer module 123. As shown in FIG. 1 and FIG. 2, the single-layer outer layer module (120a, 120b) is an outer layer specific module. The design is such that after the bone support device (100a, 100b, 100c, 100d) can be matched with the peripheral bone structure after the transplantation, the bone cells can more easily receive and be in close contact with the bone support device.

FIG. 5 is a schematic view showing a fifth structural diagram of the embodiment of the bone supporting device of the present invention. The difference between the first layer outer layer module 121c and the second outer layer module 122c is not the central module 110c. Centered on a layer-by-layer basis, but only a plurality of outer ring surfaces of the central module 110c are disposed outwardly layer by layer. In this example, the first outer layer module 121c and the second outer layer module 122c are disposed on the three outer ring surfaces of the central module 110c.

6 is a schematic structural view of a sixth embodiment of the bone support device according to the present invention. The first layer of the outer layer module 121d and the second layer of the outer layer module 122d are not the central module 110c. Centered on a layer-by-layer basis, but only a plurality of outer ring surfaces of the central module 110c are disposed outwardly layer by layer. In this example, the first outer layer module 121d and the second outer layer module 122d are disposed outwardly from the outer ring surfaces of the central module 110c.

Continuing to refer to FIG. 7 , an embodiment of a bone supporting device of the present invention is illustrated. The seventh structure is different from the previous embodiment in that the first outer layer module 121e and the second outer layer module 122e are not layered on the central module 110d, but are centrally arranged. More than one outer ring surface of 110d, and does not limit the direction and the set thickness that are outwardly disposed layer by layer. The first outer layer module 121e and the second outer layer module 122e are disposed in accordance with the need to set the bone position. Of course, the settings of the outer modules are also arranged from the central module in a single direction, or differently according to the needs of the designer, and are not limited to the above.

8 is a schematic view showing an eighth structure of the embodiment of the bone supporting device of the present invention. The difference from the previous embodiment is that the outer layer module 120c is disposed outside the central module 110a. However, the thickness from the outer side of the central module 110a to the outer side of the outer layer module 110c does not have to be the same, and may be determined according to the needs of the designer and the actual application.

Please refer to FIG. 9 for a first migration diagram of an embodiment of the bone support device of the present invention. This embodiment takes the vertebra as an example, and the transplanted portion is slightly rectangular. At the time of transplantation, the medical staff may select the bone support device 100 having a shape that is completely or as close as possible to the transplant site. Moreover, the position, shape and size of the holes of the central geometric hole and the outer geometric hole are matched with the porosity of the central module and the outer layer module, so that the bone supporting device 100 can match the bone structure of the transplant target site.

Please refer to FIG. 10, which illustrates a second embodiment of the implant support device of the present invention. The difference from the previous example is that the shape of the bone according to the transplant site, such as a more irregular shape or filling of a large range of bone defects, such as alveolar bone. Manufacturers have been specifically designed to allow medical personnel to use this type of bone support device 100, which is beneficial for the shaping and reconstruction of the oral surface.

Please refer to FIG. 11 , which illustrates a third embodiment of the implant support device of the present invention. The difference from the previous example is that the outer side of the bone supporting device 100 can be designed with a thread to screw into the bone, strengthen the adhesion between the bones, or enhance the bone to provide support for the human body, such as lifting the support force of the femoral neck.

Therefore, the technique of the present invention utilizes different shapes of the hole shape and the dense arrangement of the central and outer ring portions to adjust the elastic modulus of the bone supporting device to be applied to different bone tissues, structures and transplant sites, and is applicable to most of the bones. Bone deficiency fills and strengthens bone support.

In some embodiments, the central module has a porosity of between 50% and 90%, and the outer layer of each layer has a porosity of between 10% and 50%. The designer can adjust the hole configuration according to actual needs. To enhance the adaptability of the bone support device to the bone part to be transplanted.

It is to be understood that the present invention is not intended to limit the scope of the embodiments of the present invention. That is, the equivalent changes and modifications made in accordance with the scope of the patent application of the present invention or the scope of the invention are covered by the scope of the invention.

100a‧‧‧Bone support device

110a‧‧‧Central Module

120a‧‧‧ outer module

130a‧‧‧Central geometric holes

140a‧‧‧Outer geometric holes

Claims (12)

A bone support device includes a central module having a plurality of central geometric holes; at least one outer layer module disposed outwardly from the central module, each outer module having a plurality of outer geometric holes, An outer layer specific module of the at least one outer layer module having at least one of a hole shape, a hole size, a hole spacing, and a porosity of the outer geometric holes and the central geometric holes of the central module For the difference. The bone supporting device according to claim 1, wherein the central geometric hole has a hole shape selected from the group consisting of a circle, a square, a diamond, and a polygon; and a hole shape of the outer geometric hole It is selected from the group consisting of a circle, a square, a diamond, and a polygon. The bone support device according to claim 1, wherein the central geometric holes are at least one of an equal gap configuration, a different gap configuration, a partial equal gap, and a partial differential gap configuration; and the at least one The outer geometric holes of an outer module are at least one of an equal gap configuration, a distinct gap configuration, and a partial equal gap and a local differential gap configuration. The bone support device of claim 1, wherein the at least one outer layer module comprises at least two outer layer modules, and the at least two outer layer modules respectively comprise outer layer geometric holes having the same shape, or at least two The outer layer geometrical holes respectively included in the outer layer module are different shapes. The bone support device of claim 1, wherein the at least one outer layer module comprises at least two outer layer modules, the at least two outer layer molds The outer geometric holes respectively included in the group are the same size, or the outer geometric holes respectively included in the at least two outer layer modules are different sizes. The bone support device of claim 1, wherein the at least one outer layer module comprises at least two outer layer modules, wherein the at least two outer layer modules respectively comprise outer geometric holes having the same gap, or at least two The outer geometric holes respectively included in the outer layer modules are different gaps. The bone support device of claim 1, wherein the at least one outer layer module comprises at least two outer layer modules, the at least two outer layer modules having the same porosity, or the at least two outer layer modules They have different porosity. The bone support device according to claim 1, wherein the central module has a porosity of between 50% and 90%. The bone support device according to claim 1, wherein each of the outer layer modules has a porosity of between 10% and 50%. The bone supporting device according to claim 1, wherein the material of the bone supporting device is selected from the group consisting of titanium alloy, magnesium alloy, stainless steel, ceramic and polymer material. The bone support device according to claim 1, wherein the at least one outer ring module is looped layer by layer around the central module. The bone support device of claim 1, wherein the at least one outer ring module is disposed on at least one surface of the outer portion of the central module.