BRPI0900160A2 - endovascular release and protection system - Google Patents

Abstract

ENDOVASCULAR PROTECTION AND RELEASE SYSTEM. Patent of Invention for an endovascular stent release and protection system comprising a guide catheter (fig 1) with light 2 and lateralized balloon 1 endovascular shunt with interposition of a multi-threaded segment 6 and a silicone segment 10 for manual occlusion in the body and connection at the distal (or external) end for occlusion and / or extension 7/8 and a rapid exchange (self-expanding) balloon-type endovascular shunt release system (flg 2) 10 with multi-segment segment interposition 6 which allows blood to shunt and release the stent simultaneously.

Description

"ENDOVASCULAR PROTECTION AND RELEASE SYSTEM"

The present patent privilege of invention aims at a system of distal protection and stent release for use in endovascular surgeries in order to improve efficiency and minimize existing deficiencies in other systems.

Other distal-type protection systems are already known, such as brain protection filters that work like a sieve, filtering and preventing the release of debris. Flow blocking systems basically consist of a catheter that operates on the reverse flow or occluder principle.

Despite being used on a large scale, shielding filters follow screening principles to prevent debris from reaching brain circulation. However, because they remain free in the vascular lumen, they allow the release of emboli (due to system instability), vascular endothelial lesions due to direct trauma of the filter movement and the vasospasm mechanism, impeding the flow by its simple presence and contact. quickly become full, preventing the passage of blood not filtering but occluding.

Flow-blocking systems consist of the adoption of a reverse flow or occluder and would have the advantage of preventing distal embolization or reverse flow. Crowding also prevents the arrival of blood and hypoflow brain injuries become more prevalent. Another drawback to this device is the caliber of its 9 to 10 French system, which is too wide for thinner and more delicate arteries such as the internal and external carotid artery.

In view of all the above drawbacks and with the purpose of enabling endovascular procedures with due and necessary safety, a new model of endovascular release and protection system was developed, which consists in the creation of a true and temporary shuntendovascular as the basic principle for protection, coupled with a release system adapted for such.

This type of device consists of two types of catheters that, depending on the type of endovascular surgery, can be used separately.

A lateral balloon catheter that will serve as a temporary endovascular shunt and guides to a second rapid-exchange stent-release catheter adapted over the shunt and confection similar to the first.

This solves six problems: system instability, direct trauma, profile (caliber), vasospasm, hypoflow injury, and distal embolization.

The attached drawings show the endovascular protection and release system, object of the present patent in which:

Figure 1 shows the structure of the shunt catheter and the release catheter in longitudinal and transverse section.

As illustrated by the related figures, the utility model of the present invention consists of two (02) catheters of similar structure differing in profile (scale), intersected segment (paraocclusion or rapid exchange) and the presence of a stent mounted in the catheter. second or self-expanding balloon (stent not shown).

Figure 1 represents the basic structure of the transient endovascular shunt lateral light double-guide balloon catheter and the quick-change shuntendovascular side-balloon catheter and stent release.

This structure of Fig. 1 is provided with a main body 5 with a lateral balloon at the inner (or proximal) end 1 which will be inflated through a light from the side balloon 4 which is separated 3 from the light of the shunt 2 viewed through a cross section AA with interposition. by soldering double light polymer segmentation with lateral phenomena 6 (visualized in BB) which allow blood to flow into the lumen of the shunt 2 and thus to the inner (or proximal) end maintaining the blood perfusion of the territory.

Following this segment, a similar structure of the main body 5 is welded together and a new (now external) polymersilicon double-light segment 10 aimed at manually occluding doshunt light in case of technical need and a new dual-light segment similar to The main body is welded with a 7/8 double connection for shunt 3 light and side balloon light 4 over mandrel 9. This 7/8 connection may be used for occlusion and / or extension of said catheter.

The second catheter, the rapid-exchange endovascular shunt-type side balloon catheter and stent release, has a similar structure to the second, except that the 7/8 double connection will be used for balloon inflation 1 or balloon-mounted stent release or self-expanding one gauge (profile) greater than the second and silicon polymer segment 10 will be the quick change location.

Claims (1)

1. ENDOVASCULAR PROTECTION AND RELEASE SYSTEM comprised of an expandable or self-expandable rapid balloon exchange stent delivery system over a balloon catheter (fig 1) characterized by having the system over the temporary endovascular shunt configured as a balloon endovascular shunt guide catheter Iateralized 1 at the proximal (or inner) end and multi-threaded segment 6 (for shunt) Siiconed segment 10 (for occlusion) welded to the catheter body 5 and distal (or external) end with 7/8 connection for occlusion or extension serving as release system guide balloon or self-expanding catheter (Fig. 1) with interposition of multi-threaded segment 6 for shunting and rapid exchange segment 10 for stent implantation with a profile more than the aforementioned shunt catheter.