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Endosteal planting body for guiding bone tissue into growth and its preparation method

A technology of bone tissue and implants, applied in the field of intraosseous implants and their preparation, can solve problems such as inability to achieve mechanical fixation

Inactive Publication Date: 2003-12-10
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current cavity design and implantation process cannot achieve ideal mechanical fixation in practical applications. The reason is that after the implant is implanted in the body, the cavity cannot be in close contact with the bone and is filled by soft tissue, so it cannot Guided bone ingrowth into cavity creates mechanical fixation

Method used

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  • Endosteal planting body for guiding bone tissue into growth and its preparation method
  • Endosteal planting body for guiding bone tissue into growth and its preparation method
  • Endosteal planting body for guiding bone tissue into growth and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: as image 3 shown.

[0025] A composite-coated titanium alloy dental implant with bone cement plugged with holes was prepared by using degradable biomaterial plugging technology. The specific process is as follows:

[0026] 1. Preparation of coated titanium alloy root implants

[0027] A one-piece dental implant is adopted, a threaded cylinder with a hole penetrating the cylinder transversely at the root end, such as image 3 shown. Preparation of hydroxyapatite / bioglass composite coating by multi-step electrophoretic deposition-sintering technique.

[0028] 2. According to bone cement: β-tricalcium phosphate (mass ratio) = 2: 1, prepare the mixed slurry of absorbable inorganic bioactive bone cement and β-tricalcium phosphate (TCP); with slurry: H 2 o 2 (Volume ratio) = 3:1 Add H to the slurry 2 o 2 ; Finally, seal the hole at the root end of the dental implant with the prepared slurry.

[0029] 3. Heat to 50°C, wait for H 2 o 2 After the decomp...

Embodiment 2

[0029] 3. Heat to 50°C, wait for H 2 o 2 After the decomposition and cement curing are completed, the surface of the filling material is cleaned to make it smooth; the implant is packaged for use. Embodiment 2: as Figure 4 , Figure 5 shown.

[0030] Using degradable biomaterial plugging technology, artificial joint implants with bone cement plugging surface pearl surface were prepared. The specific process is as follows:

[0031] 1. Cast the surface pearl surface structure on the appropriate part of the metal base of the titanium alloy joint handle, such as Figure 4 shown.

[0032] 2. Modulate absorbable inorganic bioactive bone cement (α-TCP) slurry; with slurry: H 2 o 2 (Volume ratio) = 3:1 Add H to the slurry 2 o 2 ;Finally, use the prepared slurry to block the pearl surface structure on the surface of the titanium alloy joint handle to make the surface smooth.

[0033] 3. Heat to 50°C, wait for H 2 o 2 After the decomposition and the formation of a porous s...

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Abstract

The endosteal implant includes a metal base body on which the cavity or mechanical inlaying mechanism is set. The interior of the cavity or mechanical inlaying mechanism is filled up with degradable biological material, and the surface of the described metal base body is coated with biological active coating material, and the described degradable biological material is absorbable inorganic bio-active bone cement or composite material of beta-tricalcium phosphate and absorbable inorganic bio-active bone cement or polylactic acid and beta-tricalcium phosphate or beta-tricalcium phosphate and collagen or absorbable biocolloid and beta-tricalcium phosphate. The new bone can be grown into the cavity of implant from host bone along the interface of the filled degradable biological material so as to implement firm mechanial fixation.

Description

technical field [0001] The invention relates to an intraosseous implant and a preparation method thereof. Background technique [0002] At present, metal materials occupy an important position in the load-bearing bone substitute materials. However, metal intraosseous implants generally have the common problems of loosening and poor implantation. For example, artificial joints and dental implants often loosen and sink, resulting in implant failure. Existing technology mainly contains two kinds of methods: 1, purely mechanical fixation, adopt rough surface (as: screw thread, groove, cavity and protrusion etc.) as implant surface, due to existing mature coating technology (such as Plasma spraying) cannot be coated on the surface of implants with complex shapes. Therefore, such implants are often fixed mechanically, which is still prone to loosening; 2. Pure biological fixation, such as the plasma spraying bioactive coating currently used For artificial joints and dental impla...

Claims

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Application Information

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IPC IPC(8): A61F2/28A61L27/12
Inventor 陈晓明焦玉恒李世普阎玉华贺建华
Owner WUHAN UNIV OF TECH
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