Cannula assembly for cerebral vascular intervention through radial artery approach

Abstract

The invention relates to a cannula assembly for cerebral vascular intervention through radial artery approach, which comprises an outer cannula, a middle passage catheter and a guide wire; the outer cannula is provided with a first bending section, a first linear section, a second bending section, a second linear section, a third bending section, an outer cannula linear section and an outer cannula joint; the second bending section is bent towards the far-end direction, and the bending curvature of the far-end section of the second bending section is larger than that of the near-end section of the second bending section; the second linear section is longer than the first linear section and has larger inclination; the middle passage catheter is provided with a head end section, a neck section, a middle passage catheter linear section and a middle passage catheter joint; and the hardness of the outer cannula is greater than that of the middle passage catheter. The cannula assembly can improve the convenience and success rate of whole cerebral vascular hyperselection through the radial artery approach, avoids vascular injury, is suitable for approach of any one of left and right radial arteries, and can be used for cerebral angiography and cerebral vascular disease interventional therapy.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a cerebrovascular intervention sleeve assembly for transradial artery access. Background technique [0002] The transradial approach for cerebral angiography or therapy has significant advantages over the femoral approach. From the patient's point of view, cerebral angiography or therapeutic surgery via the radial artery approach has the advantages of not exposing the patient's privacy, fewer complications at the puncture point, no need to stay in bed for a long time, faster postoperative recovery, and less hospitalization time and cost. . From the perspective of the operator, the frequency of complications, the complexity of complications, and the amount of care are significantly reduced. However, due to the tortuous path of the radial artery approach to the cerebral supplying artery, especially on the aortic arch, it needs to be reversed from the foot side to the head...

AI Technical Summary

Problems solved by technology

But in fact, to protrude the contrast catheter from the opening of the side wall of the guide catheter, it is basically required that the tip of the contrast catheter be bent at 90 degrees, and the aperture of the side hole is limited, so the operation is difficult. After the opening of the angiography catheter is extended, the angle between the angiography catheter and the guide catheter is basically 90 degrees. Even if there is a guide wire at this time, it is very difficult to push the angiography catheter further to the common carotid artery. Superselection of external and vertebral arteries

[0006] In addition, there are other reports on catheters for cerebral angiography via the radial artery, but they all have certain defects

At present, there is a lack of catheters that are excellent in the convenience and success rate of blood vessel superselection, and avoid vascular injury, and are suitable for either approach of the left and right radial arteries, and can be used for both cerebral angiography and cerebrovascular interventional therapy

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