Collateral covered graft-stent and releasing method thereof

Abstract

The invention discloses a collateral typed tectorial rack, which comprises the following parts: host, collateral, flexible connecting part of host and collateral, wherein the flexible connecting part is artificial vessel. The invention also provides releasing method of collateral typed tectorial rack, which comprises the following steps: loading the rack into transmitter pipe; making collateral on the front end of host; overlapping flexible connecting part and adjacent end of host; separating collateral from host when reducing main artery; leading the collateral into left claviculate lower artery; releasing host and collateral with random angle after the host reaches the position; fitting for any patient to be transplanted into main artery easily.

Description

technical field

[0001] The invention relates to a minimally invasive interventional medical technology, in particular to a side-branch type covered stent and a release method thereof. Background technique

[0002] The use of covered stents in the treatment of aortic diseases is a major advance in aortic surgery in recent years, and its indications include aortic dissection, aortic true aneurysm, aortic pseudoaneurysm, aortic penetrating ulcer, etc. . This technique greatly reduces surgical trauma. Patients recover more quickly. But there are still deficiencies. Described below.

[0003] The stent-grafts currently used for thoracic actives are straight cylindrical. Figure 1 shows an example for aortic disease, when the proximal aneurysm neck is close to the left subclavian artery, in order to obtain a long enough anchoring zone to avoid the stent-graft due to high-speed blood flow in the aorta Displacement often requires the closure of the left subclavian artery. Altho...

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