Biocompatible gradient bone trabecula artificial knee joint tibial plateau

A technology of artificial knee joint and tibial platform, applied in knee joint, elbow joint, joint implant, etc., can solve the problems of surrounding tissue damage, fat embolism, stress shielding, etc. Not easy to fall off effect

Pending Publication Date: 2021-01-01
JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many years of clinical application have found that bone cement fixation can bring many safety and effectiveness problems: bone cement monomer polymerization releases heat, causing damage to surrounding tissues; if bone cement particles enter the blood or cause high pressure in the

Method used

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  • Biocompatible gradient bone trabecula artificial knee joint tibial plateau
  • Biocompatible gradient bone trabecula artificial knee joint tibial plateau
  • Biocompatible gradient bone trabecula artificial knee joint tibial plateau

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]A tibial platform of artificial knee joint with biocompatible gradient trabecular bone, comprising a kidney-shaped platform support 1, a dovetail-shaped protrusion 3 is arranged on the upper surface of the inward bend of the kidney-shaped platform support, and two sides of the dovetail-shaped protrusion 3 The outer surface of each oblique branch is provided with a rear groove 5, and the upper surface of the kidney-shaped platform support 1 and the outward bend relative to the dovetail-shaped projection 3 is provided with an arc-shaped projection 2, and the arc-shaped projection 2 The inner surface is provided with a front groove 6, the middle part of the lower surface of the kidney-shaped platform support is provided with a handle 4, and the other parts of the lower surface of the kidney-shaped platform support except the connecting handle 4 are provided with a trabecular bone layer 9, and the trabecular bone layer 9 consists of The proximal platform supporting bone trabe...

Embodiment 2

[0043] A biocompatible gradient trabecular bone artificial knee joint tibial platform, the handle is a curved cross-shaped rib plate instead of the handle of Example 1, the other is the same as that of Example 1, and its finite element analysis strain cloud diagram is shown in Figure 11 .

[0044] A side wall 22 can also be set on the edge of the lower surface of the kidney-shaped platform, so that the trabecular bone layer is set inside the side wall.

Embodiment 3

[0046] A tibial platform of artificial knee joint with biocompatible gradient trabecular bone, comprising a kidney-shaped platform support 1, a dovetail-shaped protrusion 3 is arranged on the upper surface of the inward bend of the kidney-shaped platform support, and two sides of the dovetail-shaped protrusion 3 The outer surface of each oblique branch is provided with a rear groove 5, and the upper surface of the kidney-shaped platform support 1 and the outward bend relative to the dovetail-shaped projection 3 is provided with an arc-shaped projection 2, and the arc-shaped projection 2 The inner surface is provided with a front groove 6, the middle part of the lower surface of the kidney-shaped platform support is provided with a handle 4, and the other parts of the lower surface of the kidney-shaped platform support except the connecting handle 4 are provided with a trabecular bone layer 9, and the trabecular bone layer 9 consists of The proximal platform supporting bone trab...

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Abstract

The invention discloses a biocompatible gradient bone trabecula artificial knee joint tibial plateau. The biocompatible gradient bone trabecula artificial knee joint tibial plateau comprises a kidney-shaped plateau support, a handle is arranged in the middle of the lower surface of the kidney-shaped plateau support, a bone trabecula layer is arranged on other parts, except for a connecting handle,of the lower surface of the kidney-shaped plateau support, and the bone trabecula layer is composed of a near-plateau bone-supporting trabecula layer and a far-plateau bone-supporting trabecula layer; and the pore diameter and porosity of the near-plateau bone-supporting trabecula layer are uniformly arranged, and the far-plateau bone-supporting trabecula layer is arranged in three partitions. The bone trabecula topological structure of the tibial plateau is in three-dimensional gradient distribution, the micro-strain of 64%-72% of a finite element model is between the lowest effective strainthreshold value and the hyper-physiological strain threshold value, the mechanical adaptability of prosthesis is improved, the bone ingrowth of the tibial plateau is improved, and the long-term stability is improved; and 3D printing integrated forming is adopted, the bonding strength of the bone trabecula and a solid body is high, and the bone trabecula is not prone to falling off.

Description

technical field [0001] The invention relates to an artificial knee joint tibial platform, in particular to a biocompatible gradient bone trabecular artificial knee joint tibial platform. Background technique [0002] Total knee arthroplasty is currently an effective clinical treatment for end-stage knee joint diseases. It uses artificially designed joint prostheses to replace damaged knee joint tissue, thereby relieving patients' pain, restoring their knee joint function, and improving their lives. quality. Corresponding to the anatomical structure of the human body, the composition of the knee joint prosthesis includes the femoral condyle, the tibial plateau and the plateau pad. With the rapid development of medical device technology and the continuous improvement of people's requirements for the safety and effectiveness of prosthetic products, the design and manufacturing technology of knee prosthesis will need to be continuously optimized and improved. [0003] At prese...

Claims

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Application Information

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IPC IPC(8): A61F2/38
CPCA61F2/389A61F2002/30011A61F2002/30985A61F2250/0023
Inventor 史文张景康曹雨刘璐
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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