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Bionic fixing apparatus

A fixation device and bionic technology, applied in fixers, internal fixers, tissue regeneration, etc., can solve problems such as tissue depression, necrosis and wear, difficult to form pores, loose fixation devices, etc.

Active Publication Date: 2015-06-03
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the traditional method, the implant is subjected to a special sintering or surface coating process, and then the laser is used to open the pores. The pores formed in this way cannot be fixed in position, and the pores are not connected to each other and can only be formed during implantation. The surface layer of the material, so that the porosity cannot be determined
In addition, it is also difficult to form pores with regular shapes
If the pores formed are too large and the strength of the rigid body is insufficient, problems such as loosening and fracture of the fixation device may occur in the early stage of bone healing after implantation or long-term use
In contrast, if the pores formed are too small, the above-mentioned problems such as tissue depression, necrosis, and wear cannot be solved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0037] figure 1 A schematic diagram of the bionic fixation device 1 according to the first embodiment of the present invention is shown. The bionic fixing device 1 includes a flexible part 11 having a plurality of holes 111 . In this embodiment, a plurality of holes 111 are arranged irregularly, and the holes 111 are formed by stacking and combining multi-dimensional lines and planes 1110, each hole is a triangle, and the diameter of the holes 111 (the the size of the maximum width) are not exactly the same. In addition, the porosity of the bionic fixation device 1 according to the first embodiment of the present invention is 0.34.

[0038] In this embodiment, the bionic fixing device 1 may include a rigid part 12 , the rigid part 12 is connected to the flexible part 11 , and the rigid part 12 and the flexible part 11 are integrally formed. The difference between the rigid part 12 and the flexible part 11 is that the rigid part 12 does not have a hole.

[0039] In addition...

no. 2 example

[0041] figure 2 A schematic diagram of a bionic fixation device 2 according to a second embodiment of the present invention is shown. Similar to the first embodiment, the bionic fixing device 2 may include a flexible part 21 having a plurality of holes 211 . In this embodiment, the plurality of holes 211 are arranged irregularly, but the shape of each hole is a quadrangle, and the diameters of the holes 211 (the size of the maximum width of the holes 211 ) are not completely the same. It should be noted that the quadrilateral here is not limited to parallelogram or trapezoid, and the hole 211 may include other quadrilaterals such as rectangle, rhombus, and trapezoid, or a mixture of the above-mentioned various quadrilaterals. In addition, the porosity of the bionic fixture 2 of the second embodiment of the present invention is 0.32.

[0042] Similarly, the bionic fixing device 2 can also include a rigid body part 12 and a threaded part 13 like the bionic fixing device 1 of ...

no. 3 example

[0044] image 3 A schematic diagram of a bionic fixation device 3 according to a third embodiment of the present invention is shown. Similar to the first embodiment, the bionic fixing device 3 may include a flexible part 31 having a plurality of holes 311 . In this embodiment, a plurality of holes 311 are arranged irregularly, and the holes 311 are composed of multi-dimensional linear and curved surfaces 3110. The size (the size of the maximum width of the hole 311) is not exactly the same. In addition, the porosity of the bionic fixing device 3 of the third embodiment of the present invention is 0.17.

[0045] Similarly, the bionic fixing device 3 can also include a rigid body part 12 and a threaded part 13 like the bionic fixing device 1 of the first embodiment, and the rigid body part 12 , the threaded part 13 and the flexible part 31 are integrally formed.

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Abstract

A bionic apparatus is provided. The bionic apparatus includes a flexible portion having a plurality of pores, a rigid portion connected with the flexible portion, and a supporting element disposed in the flexible portion. The pore size of each pore is between 50 μm to 500 μm. The flexible portion, the rigid portion and the supporting element are one-piece formed by a additive manufacturing process.

Description

technical field [0001] The invention relates to a bionic fixing device, in particular to a bionic fixing device with a flexible part having multiple holes. Background technique [0002] With the advancement of technology and medicine, implants such as bone nails are used to fix biological tissues in the human body for medical purposes such as repairing accidental injuries or natural aging. However, because the modulus of elasticity (Modulus of Elasticity) of existing implants is greater than that of human biological tissues, problems such as tissue depression, necrosis, wear, and loosening are prone to occur when the external force is too large. [0003] Generally, holes are provided on implants such as bone screws to reduce the modulus of elasticity. However, in the traditional method, the implant is subjected to a special sintering or surface coating process, and then the laser is used to open the pores. The pores formed in this way cannot be fixed in position, and the po...

Claims

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Application Information

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IPC IPC(8): A61B17/68A61B17/86A61C8/00
CPCA61B17/8625A61B17/864A61B17/866A61L31/146A61L2430/02B33Y80/00
Inventor 蔡佩宜黄志杰温奕泓沈欣欣林溢泓林得耀孙瑞升庄传胜陈安利林敬智
Owner IND TECH RES INST