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Stent

A main body and channel technology, applied in the field of medical stents, can solve the problems of unsatisfactory treatment effect, inability to obtain ideal treatment effect, inability to provide nutrition and remove metabolic waste, etc., to achieve the effect of promoting regeneration and repairing, and avoiding entrapment

Active Publication Date: 2017-06-06
BEIJING SHAPEDREAM INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previous material research has adopted stem cell therapy, autologous bone / artificial bone material filling therapy, and tantalum rod implantation therapy, etc., but none of them have achieved satisfactory therapeutic effects
Because the important cause of femoral head necrosis is the damaged or interrupted blood supply in the lesion area, although these materials have the performance of biomechanical support or promoting osteogenesis, it is difficult to rebuild the microcirculation system in the lesion area, so it cannot be used for injected stem cells or The new bone tissue provides necessary nutrition and removes metabolic waste, so that the ideal therapeutic effect cannot be obtained

Method used

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Embodiment Construction

[0031] Embodiments of the present invention are described below with reference to the accompanying drawings, wherein like components are designated by like reference numerals.

[0032] The stent 1 is a porous stent, which can be implanted into the cavity formed after the decompression of the avascular necrosis of the femoral head lesion and the function of biomechanical support and promotion of the ingrowth of blood vessels and bone tissue.

[0033] The bracket 1 can be prepared by 3D printing technology, and certainly can also be prepared by non-3D printing technology (such as vapor deposition method or sintering method, etc.). The stent 1 of the present invention is a porous titanium alloy stent, of course, the material of the stent can also be tantalum, titanium-tantalum alloy, nickel-titanium alloy, pure titanium, cobalt alloy, magnesium alloy, calcium phosphate, hydroxyapatite, polylactic acid ( PLA), lactic acid-glycolic acid copolymer (PLGA), polyacetolactone (PCL), cor...

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Abstract

The invention relates to the field of medical instruments and provides a stent. The stent comprises a stent body (11) and pore channels (12), wherein the pore channels (12) penetrate through the stent body (11). The stent can combine with vascular transplantation for treating femoral head necrosis, local biomechanical strength after the focus of infection is removed can be repaired, local microcirculatory system is rebuilt, and regeneration and repair of bone tissue are promoted.

Description

technical field [0001] The present invention relates to medical devices. More specifically, it relates to a medical stent. Background technique [0002] Necrosis of the femoral head, also known as avascular necrosis of the femoral head, is a common and intractable disease in the field of orthopedics. It is a kind of pathological change in which the local blood supply of the femoral head is poor due to various reasons, resulting in further ischemia, necrosis, fracture of trabecular bone, and collapse of the femoral head. Without effective treatment, about 80% of patients will experience femoral head collapse within 1-4 years, secondary joint dysfunction, and eventually patients have to undergo artificial joint replacement. It is a huge economic burden, and because artificial joints have a certain lifespan, young and middle-aged patients often face the problem of joint loosening after joint replacement. Artificial joint revision surgery is difficult and risky, and artificial...

Claims

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Application Information

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IPC IPC(8): A61F2/28
CPCA61F2/28A61F2/2846A61F2/30721A61F2002/2828A61F2002/2835A61F2002/30224A61F2002/30329A61F2002/30985A61F2310/00005A61F2310/00011
Inventor 李波张国伟徐保东赵国栋
Owner BEIJING SHAPEDREAM INFORMATION TECH CO LTD
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