Angiographic catheter

Abstract

The invention discloses an angiographic catheter which is used for delivering a contrast agent during a PDA plugging device implanting operation, the angiographic catheter comprises a head part, a middle part and a tail part, wherein the head part and the middle part are connected and communicated, the middle part and the tail part are connected and communicated, the middle part is a flexible pipe, the head part is in an arc-shaped structure, a contrast agent release opening is formed in the head part, the angiographic catheter further comprises two pull wires which are used for adjusting thebending direction of the angiographic catheter and arranged on the two sides of a catheter respectively, one ends of the pull wires are connected with the middle part, the other ends of the pull wiresstretch out from the tail part, and when a first pull wire is pulled, the middle part drives the head part to bend to one side; when the second pull wire is pulled, the middle part drives the head part to bend to the other side. By the aid of the arrangement, the bending direction of the head end of the angiographic catheter is adjustable, the angiographic catheter can be well fixed in an ideal angiographic position in the aorta, and PDA developing is facilitated; the contrast agent release opening is only formed in the head end, the contrast agent cannot flow out from the pulmonary artery end, the PDA developing is not disturbed, the specific shape and size of the PDA can be seen clearly, and a suitable type PDA plugging device can be selected.

Description

technical field [0001] The present invention relates to the technical field of medical devices, and more specifically, to a contrast catheter. Background technique [0002] In recent years, due to the influence of environmental, radiation, genetic and other factors, the probability of neonatal disease has been increasing year by year, especially congenital heart disease. Among them, patent ductus arteriosus (PDA) is one of the common types of congenital heart disease in children. One, accounting for about 15% of the total number of congenital heart disease. [0003] The ductus arteriosus is originally a normal blood flow channel between the pulmonary artery and the aorta in the fetal period. The ductus arteriosus should be closed by itself when it is disused shortly after birth. If the ductus arteriosus is still open after the patient is 1 year old, it is a congenital heart disease: the ductus arteriosus is not closed (PDA), and produce corresponding pathophysiological chan...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problems in the related art at least to a certain extent, the application provides a contrast catheter, which solves the problem that the curling direction of the existing pigtail contrast catheter cannot be adjusted well during the implantation operation of the PDA occluder. Fixed in the ideal position for intra-aortic angiography, the loss of contrast agent is not conducive to PDA imaging; and the side hole is too long, part of the side hole is located on the side of the arterial ductus pulmonary artery, and the contrast agent flowing out of the side hole at the end of the pulmonary artery is likely to interfere with PDA imaging, making it difficult to see Knowing the specific shape and size of PDA, it is difficult to choose a suitable model of PDA occluder

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