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Biological-type knee joint partition bone trabecula tibial plateau

A tibial platform and trabecular bone technology, applied in the field of medical equipment, can solve the problems of reducing long-term stability and prosthesis loosening, and achieve the effect of increasing long-term stability and uniform bone ingrowth

Pending Publication Date: 2019-06-28
JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the surface of the traditional biofixed prosthesis has been biologically modified, it is still a solid prosthesis, and its elastic modulus is significantly higher than that of human cortical bone. The increase of the elastic modulus leads to the increase of the stress shielding effect of the prosthesis, while the stress Increased occlusion reduces callus formation, which eventually leads to loosening of the prosthesis and reduces its long-term stability

Method used

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  • Biological-type knee joint partition bone trabecula tibial plateau
  • Biological-type knee joint partition bone trabecula tibial plateau
  • Biological-type knee joint partition bone trabecula tibial plateau

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A biotype knee zoned trabecular tibial plateau, see figure 1 , Figure 4 , including a kidney-shaped platform support 1, a dovetail-shaped bump 3 is provided on the upper surface of the inner bend of the kidney-shaped platform support, and a rear groove 5 is provided on the outer side of the two oblique branches of the dovetail-shaped bump 3. The upper surface of the kidney-shaped platform holder 1 and the outward bend relative to the dovetail bump 3 is provided with an arc-shaped bump 2, and the inner surface of the arc-shaped bump 2 is provided with a front groove 6 (the front groove 6 and the rear The groove 5 can effectively fix the tibial plateau pad on the tibial plateau), the middle part of the lower surface of the kidney-shaped platform is provided with a handle 4, and the other parts of the lower surface of the kidney-shaped platform are provided with a trabecular bone 9 except for the connecting handle 4 , the transverse diameter 10 of the kidney-shaped platf...

Embodiment 2

[0033]A bio-type knee joint partitioned bone trabecular tibial platform, including 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 oblique directions of the dovetail-shaped protrusion 3 The outer surface of the branch is provided with a rear groove 5, an arc-shaped bump 2 is arranged on the upper surface of the kidney-shaped platform support 1 and the outward bend relative to the dovetail-shaped bump 3, and an arc-shaped bump 2 is arranged on the inner surface of the arc-shaped bump 2. There is a front groove 6, the middle part of the lower surface of the kidney-shaped platform bracket is provided with a handle 4, and other parts of the lower surface of the kidney-shaped platform bracket except the connecting handle 4 are provided with bone trabeculae 9, and the transverse diameter of the kidney-shaped platform bracket is 10 (tibia The length of the platform) is...

Embodiment 3

[0038] A bio-type knee joint partitioned bone trabecular tibial platform, including 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 oblique directions of the dovetail-shaped protrusion 3 The outer surface of the branch is provided with a rear groove 5, an arc-shaped bump 2 is arranged on the upper surface of the kidney-shaped platform support 1 and the outward bend relative to the dovetail-shaped bump 3, and an arc-shaped bump 2 is arranged on the inner surface of the arc-shaped bump 2. There is a front groove 6, the middle part of the lower surface of the kidney-shaped platform bracket is provided with a handle 4, and other parts of the lower surface of the kidney-shaped platform bracket except the connecting handle 4 are provided with bone trabeculae 9, and the transverse diameter of the kidney-shaped platform bracket is 10 (tibia The length of the platform) i...

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Abstract

The invention discloses a biological-type knee joint partition bone trabecula tibial plateau. The biological-type knee joint partition bone trabecula tibial plateau comprises a reniform plateau bearing part, a handle is arranged in the middle of the lower surface of the reniform plateau bearing part, parts, except the connecting handle, of the lower surface of the reniform plateau bearing part areprovided with bone trabeculae, and the reniform plateau bearing part is divided into an inner side area, a middle area and an outer side area; the hole diameter and porosity of the bone trabeculae inthe inner side area are larger than those of the bone trabeculae in the outer side area and the middle area in sequence. The partition bone trabecula tibial plateau is integrally formed through 3D printing of titanium alloy, and the hole diameters and porosities of the bone trabeculae arranged in different areas of the lower surface of the tibial plateau are different. An experiment proves that through partition arrangement of the bone trabecula of the biological-type knee joint tibial plateau, under the actual circumstance of uneven stress of the tibia, uniform bone ingrowth is achieved, andthe long-time stability of the biological-type tibial plateau is improved. through 3D printing, the surface of the whole component is rough, friction between the plateau and the tibia is increased, and the initial stability of the plateau is improved.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, and in particular relates to a biological type knee joint partitioned bone trabecular tibial platform. Background technique [0002] Knee replacement surgery can effectively solve the patient's knee symptoms, relieve the patient's pain, and restore the patient's knee function to a certain extent. The structure of knee prosthesis includes: femoral condyle, tibial plateau, tibial plateau pad, patella and accessories. With the rapid development of medical device technology and the continuous improvement of people's requirements for the safety and effectiveness of knee joint prosthesis, knee joint prosthesis technology has become more mature and perfect, and different types of knee joint prosthesis have emerged one after another. [0003] At present, according to different fixation methods, knee prostheses can be divided into two categories: bone cement fixation and biological fixation (no...

Claims

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Application Information

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IPC IPC(8): A61F2/38
Inventor 刘念史文曹雨李建宇叶金铎刘璐
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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