Congenital heart disease surgical saccule dilating catheter special for children

Abstract

The invention discloses a congenital heart disease surgical saccule dilating catheter special for children. The heart disease surgical saccule dilating catheter special for children comprises a wire guide port, a water injection port, a fixed sleeve, an outer catheter, an inner catheter, a saccule and a guide wire; the rear end of the saccule is fixed on the outer wall of the front end of the outer catheter; the front end of the saccule is fixed on the outer wall of the front end of the inner catheter; a cavity which is formed by the inner catheter and the outer catheter is communicated with the water injection port; the guide wire is inserted into the inner catheter; the saccule is a small saccule which has a shape of a waist drum and of which the middle part is thick and two heads are thin; the total length of the saccule is 15 to 20mm; the diameter of each of two ends of the saccule is 15 to 20mm; the diameter of each of two heads of the saccule is 8 to 20mm; and the diameter of the middle part of the saccule is 2 / 3 to 4 / 5 the diameter of each of the two heads. The diameter of the middle part of the saccule is smaller than that of each of two heads, so the saccule can be accurately positioned on the narrow part of an artery and does not slip; the outer catheter is provided with scale marks to ensure accurate positioning; the chance that a patient suffering from pulmonary stenosis is damaged when the saccule is dilated can be obviously reduced, and safety of straight open thoracotomy is higher. The blank of the saccule dilating catheter special for the children at present is filled.

Description

technical field [0001] The invention relates to a special surgical balloon dilatation catheter for children with congenital heart disease under mosaic surgery under open chest and direct vision, which is mainly suitable for surgical treatment of children with congenital pulmonary atresia, pulmonary artery stenosis and aortic stenosis. Background technique [0002] Pulmonary atresia, pulmonary stenosis, and aortic stenosis are serious congenital heart diseases in the neonatal period, especially pulmonary atresia with a complete ventricular septum. If there is no emergency operation, it will seriously endanger life. The traditional surgical method is difficult. The patient suffered great trauma and the postoperative mortality rate was extremely high. Pulmonary stenosis is a disease of right heart outflow tract obstruction. According to the stenosis site, it can be divided into valve, infundibulum, pulmonary artery trunk and branch stenosis, among which pulmonary valve stenosis...

AI Technical Summary

Problems solved by technology

However, there is currently no special surgical balloon dilation catheter for children in mosaic surgery under open thoracotomy. The balloon dilator used is derived from the adult interventional balloon dilation catheter. The length of the balloon is greater than 35 mm, and the length of the guide wire is about 200 cm. The catheter is about 100cm long

Moreover, the series of balloon diameters are incomplete, which cannot be suitable for children with different conditions, which increases the difficulty and risk of surgery.

For children, the operation is inconvenient and difficult due to the length of the balloon and the catheter during mosaic surgery, which may cause unnecessary damage, and the most dangerous thing is that it is easy to damage the pulmonary artery and aorta. Once damaged, it will lead to inability to Death from controlled hemorrhage

Simultaneously when this kind of balloon is inflated, arterial stenosis is easy to slip off, can't reach expected effect, thereby there is bigger potential safety hazard clinically, urgently needs to design a kind of special-purpose surgical balloon catheter suitable for children

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