Closing device for preformed hole in artificial blood vessel and conveying device of closing device

Abstract

The invention discloses a closing device for a preformed hole in an artificial blood vessel and a conveying device of the closing device. The closing device comprises an outer side closing film, an inner side closing film and a positioning ring, wherein the positioning ring is of a spiral structure and comprises two end parts and a middle, the middle is connected between the two end parts, and thetwo end parts of the positioning ring are respectively connected to the outer side closing film and the inner side closing film. When the closing device is used for closing the preformed hole in theartificial blood vessel, the positioning ring penetrates through the preformed hole, and the outer side closing film and the inner side closing film are respectively located on the outer and inner sides of the pipe wall of the artificial blood vessel and correspond to the to-be-closed preformed hole. By utilizing the design that the outer side closing film and the inner side closing film are respectively located on the outer and inner sides of the pipe wall of the artificial blood vessel, the outer side closing film is selectively put into a false lumen on the outer side of an aortal artificial blood vessel, the inner side closing film is put into a true lumen on the inner side of the aortal artificial blood vessel, and the preformed hole and a breaking hole are closed together, so that the risk that openings of adjacent branched arteries are closed by the true lumen is avoided, meanwhile, the breaking hole is relatively adequately closed, and the validity and the safe reliability areimproved.

Description

technical field [0001] The invention relates to the technical field of artificial blood vessels, in particular to an artificial blood vessel reserved hole sealing device and a delivery device thereof. Background technique [0002] In the application of existing artificial blood vessel technology, stent grafts have been used as a means to repair aortic dissection. For the situation where the dissection rupture is located next to the opening of the branch artery, the preferred repair plan is to seal the dissection rupture and maintain the aortic dissection. Unobstructed blood flow in branch arteries. In this regard, some existing schemes include the use of stent grafts to seal the dissection rupture and adjacent branch arterial openings in the true lumen of dissection and the branch arterial bypass scheme, and the "chimney" scheme (that is, to place the graft in the true lumen of the dissection). The stent seals the opening of the dissection rupture and the opening of the adj...

AI Technical Summary

Problems solved by technology

However, the stent-grafts or repair devices on which the above-mentioned repair schemes rely have different defects. For example, in the bypass scheme, because the stent-graft completely seals the rupture area, it needs to increase the surgical trauma to open a new branch arterial opening, and the "chimney" scheme Due to the lack of sleeves in the covered stent, there is internal leakage, and the operation of the branch stent is complicated and it is difficult to correct the wrong placement.

Images