Blood flow protection device for lower limb artery reverse protection umbrella

Abstract

The invention relates to a lower limb artery reverse protection umbrella blood flow protection device, and belongs to the technical field of medical instruments. Comprising an outer-layer catheter, an inner-layer catheter, a guide wire and a conical protective umbrella, an inner-layer catheter is arranged in the outer-layer catheter in a penetrating manner, and a guide wire is arranged in the inner-layer catheter in a penetrating manner; a cone-shaped protective umbrella is arranged between the outer-layer guide pipe and the inner-layer guide pipe; the cone-shaped protection umbrella comprises a cone-shaped dense net umbrella body and a plurality of umbrella body supporting rods in the umbrella body, an umbrella tip of the cone-shaped dense net umbrella body is arranged on the outer wall of the inner layer guide pipe, and the umbrella body is arranged on the side, away from an operator, of the umbrella tip. The lower limb artery blood flow protection device solves the problem that the lower limb artery is small and space is insufficient, and is particularly suitable for interventional therapy of lower limb artery stenosis and occlusion diseases. The problem that due to lower limb artery interventional operation, chippings fall off to embolize the tail end artery is solved, and the symptoms of'junk feet ', far-end toe ischemia, necrosis and the like can be prevented.

Description

technical field [0001] The invention relates to a lower extremity artery reverse protective umbrella blood flow protection device, which belongs to the technical field of medical devices. Background technique [0002] Since most arterial occlusive diseases are caused by atherosclerotic plaque or thrombus formation to block blood vessels; in the past, when using interventional methods to treat lower extremity arterial stenosis, especially occlusive diseases, it was often first necessary to use a guide wire to Occluded arteries are unblocked. In the prior art, when carotid artery stenting is performed on patients with carotid artery stenosis, serious adverse events such as stroke caused by debris falling off need to be considered, and relatively mature cerebral blood flow protection devices have been clinically available. The body tissues supplied by the most distal part of the femoro-popliteal artery are the toes and other parts, which have not received enough attention beca...

AI Technical Summary

Problems solved by technology

The body tissues supplied by the most distal part of the femoro-popliteal artery are the toes and other parts, which have not received enough attention because they will not cause serious disabling and fatal consequences, and there is also a lack of corresponding lower-limb distal blood flow protection devices in clinical practice.

Conventional umbrella devices need the head end to extend a certain distance from the diseased blood vessel to the distal end, while the arteries of the lower limbs, especially below the knee joint, are significantly thinner than the femoral artery, and the vascular conditions of patients with lower limb arterial stenosis or occlusion are difficult to meet the use of conventional umbrella devices conditions of

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