32 results about "Circulatory time" patented technology

A first pipe section and a second pipe section are arranged, the second pipe section comprises an inner layer, an outer layer and a releasable elastic support located between the inner layer and the outer layer, and the upper end of the outer layer is separated from the inner layer to form a skirt edge, so that the far end of the second pipe section can be connected with a descending aorta firstly; according to the initial form of the far end of the second pipe section, the inner layer, the outer layer and the releasable elastic support between the inner layer and the outer layer are in a contracted state, after the far end of the second pipe section is placed in the descending aorta, the elastic support is released to open the descending aorta, the outer layer and the descending aorta are tightly attached under the supporting and pressing effects of the elastic support, and therefore the descending aorta is expanded. Therefore, suturing is not needed temporarily, blood perfusion circulation can be carried out only by clamping the upper end of the inner layer, and then the skirt edge is turned outwards and then is sutured and fixed with the descending aorta. Therefore, the double-layer elephant trunk stent artificial blood vessel which can be quickly matched with a descending aorta incision and is beneficial to shortening the circulation stopping time is provided.