Porous tantalum rod and application of porous tantalum rod

A technology of porous tantalum and pore size, applied in bone implants, medical science, prostheses, etc., can solve the problems of inability to achieve good clinical effects, low clinical success rate, lack of carrying, etc., and is beneficial to implementation and clinical application , good clinical effect, simple preparation method

Active Publication Date: 2013-12-25
赵德伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the medical implant made of the existing porous tantalum material for filling the necrosis of the femoral head is a rod-shaped solid object with a thread at one end. People in the industry are used to calling it a "porous tantalum rod". Embedded implants in clinical treatment are implanted through the decompression channel during the early stage of femoral head necrosis, and are fixed by surrounding bone tissue growth wrapping and ingrowth. "It lacks the function of carr

Method used

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  • Porous tantalum rod and application of porous tantalum rod
  • Porous tantalum rod and application of porous tantalum rod
  • Porous tantalum rod and application of porous tantalum rod

Examples

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Effect test

Embodiment 1

[0033] Such as Figure 1 to Figure 3 As shown, a porous tantalum rod includes a body 1, one end of the body 1 is provided with a groove 2, and the other end is a threaded structure 3, and a notch 4 is provided on the end face of the threaded structure 3, the body One end surface of 1 provided with the groove 2 is in the shape of a hemispherical head, and the body 1 is in the shape of a cylinder. The ratio of the length of the groove 2 to the length of the body 1 is 1.5:10; the ratio of the width of the groove 2 to the diameter of the non-thread structure 3 part of the body 1 is 6:10.

[0034] On the other hand, according to the size and tissue characteristics of the implanted site in specific use, the specific size of the body (ie, the porous tantalum rod) can be appropriately adjusted to achieve the best therapeutic effect.

[0035] The porous tantalum rod is provided with a groove 2 at one end of the body, which can load bone marrow stromal stem cells or bone marrow stromal...

Embodiment 2

[0038] Such as Figure 1 to Figure 3 As shown, a porous tantalum rod includes a body 1, one end of the body 1 is provided with a groove 2, and the other end is a threaded structure 3, and a notch 4 is provided on the end face of the threaded structure 3, the body One end surface of 1 provided with the groove 2 is in the shape of a hemispherical head, and the body 1 is in the shape of a cylinder. The ratio of the length of the groove 2 to the length of the body 1 is 1.5:10; the ratio of the width of the groove 2 to the diameter of the non-thread structure 3 part of the body 1 is 6:10.

[0039] On the other hand, in specific use, according to the size and tissue characteristics of the implanted site, the specific size of the body (that is, the porous tantalum rod) can be appropriately adjusted to achieve the best therapeutic effect.

[0040] The porous tantalum rod is provided with a groove 2 at one end of the body, which can load bone marrow stromal stem cells or bone marrow str...

Embodiment 3

[0050] Application of embodiment 3 porous tantalum rods in the mid-term treatment of femoral head necrosis

[0051] A lateral hip incision was made, starting at 2cm below the anterior superior iliac spine and extending toward the greater trochanter of the femur, forming a pair of "S"-shaped incisions with a length of about 8-12cm. The ascending branch of the lateral circumflex femoral vessel was found in the deep muscular mass. It was separated retrogradely to the medial hilum of the tensor fascia lata, and bluntly separated to the anterior superior iliac spine. During the separation process, a muscle sleeve of about 1 cm should be taken, and the bone knife was cut out. The size of the ilium bone flap was about 2.0cm×2.5cm×2.0cm, and a small amount of cancellous bone was taken for future use. Use a bone knife to open a window at the junction of the femoral head and neck. The area is about 2.0cm×2.0cm. The necrotic bone tissue in the femoral head is removed. 5 rise up. Insert...

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Abstract

The invention relates to a medical permanent implantation object, in particular to a medical implantation porous tantalum rod used for treating early-mid femoral head necrosis. The porous tantalum rod comprises a body, wherein one end of the body is provided with a groove, the other end of the body is provided with a threaded structure, and a notch is formed in the end surface of the tail end of the threaded structure. One end of the body of the porous tantalum rod is provided with the notch, bone marrow stromal cells or bone marrow stromal cell united biological membrane complexes and the like can be loaded, the generation of a new bone is favorably realized, a better clinical effect is particularly realized in the early femoral head necrosis treatment, and the defects of poor clinical treatment effect and the like of the existing entity type porous tantalum rod are overcome. The porous tantalum rod has the advantages that the preparation method is simple, the cost is low, the implementation and the clinical application are favorably realized, and the porous tantalum rod is suitable for the need of wide patients.

Description

technical field [0001] The invention relates to a medical permanent implant, in particular to a medically implanted porous tantalum rod for treating early and mid-stage necrosis of the femoral head. Background technique [0002] Collapse of the articular surface of the femoral head or necrosis of the femoral head is a common clinical disease. At present, the method of drilling and decompression is often used for treatment. During the operation, the sequestrum needs to be removed before filling the support for the collapsed or necrotic femoral head implants; Bone flaps with or without blood vessels are used for transfer therapy. A large number of experiments and clinical studies have proved that simple bone grafts have shortcomings such as insufficient biomechanical support and bone resorption. Therefore, bone implants that can provide biomechanical support are required. [0003] Porous medical metal implant materials have important and special uses in the treatment of bone ...

Claims

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Application Information

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IPC IPC(8): A61F2/28A61L27/04A61L27/56
Inventor 赵德伟王本杰尉晓蔚谢辉黄诗博王威
Owner 赵德伟
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