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Magnetic device for portacaval shunt

A magnetic device and portal cavity technology, applied in the field of medical devices, can solve problems such as occlusion, affecting the long-term efficacy of the inner support tube device, and inner support tube stenosis

Active Publication Date: 2010-10-06
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its poor long-term curative effect, the main reason is that the internal support tube used for shunt will gradually narrow or even occlude, which is caused by the excessive hyperplasia of pseudointimal in the support frame. It is reported that the stenosis rate is 40.5% in one year , up to 50.8% in 2 years, these shortcomings have seriously affected the long-term efficacy of the inner support tube device

Method used

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  • Magnetic device for portacaval shunt
  • Magnetic device for portacaval shunt
  • Magnetic device for portacaval shunt

Examples

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Embodiment Construction

[0018] The present invention will be described in more detail below in conjunction with the accompanying drawings.

[0019] like figure 1 As shown, the first permanent magnet 1 with the first guide wire 4 of the portal cavity shunt magnetic device is a semi-cylindrical body with blunt ends.

[0020] like figure 2 As shown, the second permanent magnet 2 of the door cavity shunt magnetic device is a semi-cylindrical body with a blunt end.

[0021] like image 3 As shown, the second guide wire 5 and the coil power cord 12 with the plug protrude out of the silicone colloid 6, and the silicone colloid 6 is a semi-cylindrical body with a blunt end.

[0022] like Figure 4 As shown, the outside of the electromagnet 3 with the second guide wire 5 is wrapped by a silicone colloid 6, and the coil power line 12 with a plug is connected with the coil of the electromagnet 3.

[0023] In addition, the length of the first permanent magnet 1 is slightly greater than the length of the se...

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Abstract

The invention provides a magnetic device for portacaval shunt. The magnetic device for the portacaval shunt comprises a permanent magnet set, wherein the permanent magnet set consists of a first permanent magnet and a second permanent magnet, wherein the first permanent magnet is provided with a first guide wire; and the second permanent magnet is provided with an electromagnet with a second guide wire matched with the second permanent magnet. The shunt from a portal vein to inferior vena cava is finished by combining two permanent magnets with corresponding sizes and shapes with a mini electromagnet, so that the defect that an internal supporting tube for the shunt is narrowed gradually, and even is obstructed is avoided. In addition, the surface of the built anastomotic stoma is smooth; the shunt port can remain unobstructed for a long time; and after the anastomotic stoma of the portal vena cava is formed, the two magnets can be taken out through the guide wires remained in the operation without a foreign matter reserved in a body.

Description

technical field [0001] The invention relates to a medical device, in particular to a magnetic device for portocavity shunting. Background technique [0002] The current device for portocavity shunt mainly uses an internal support tube device to establish a channel between the portal vein and the inferior vena cava, and inserts the internal support tube to realize porta cavity shunt. However, due to its poor long-term curative effect, the main reason is that the internal support tube used for shunt will gradually narrow or even occlude, which is caused by the excessive hyperplasia of pseudointimal in the support frame. It is reported that the stenosis rate is 40.5% in one year , up to 50.8% in 2 years, these shortcomings have seriously affected the long-term efficacy of the inner support tube device. Contents of the invention [0003] In order to overcome the deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a magnetic device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/11A61B17/00H01F7/02
CPCA61B17/11A61B2017/00876A61B2017/1107A61B2017/1117
Inventor 吕毅严小鹏马锋李建辉王善佩
Owner XI AN JIAOTONG UNIV
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