A kind of intravascular delivery device and its application

Abstract

The present invention relates to the field of medical devices, more specifically, the present invention relates to an intravascular delivery device and its application, the intravascular delivery device includes a delivery catheter 1 and a sheath 2, and the delivery catheter 1 includes delivery catheters connected in sequence A handle 3, a delivery catheter body 4, and a developing ring 5; the sheath 2 includes a sheath handle 7 and a sheath body 8 integrally connected. Compared with the existing mechanical thrombectomy method, the intravascular delivery device of the present invention is convenient to operate, safe and reliable, and has a high success rate.

Description

technical field [0001] The present invention relates to the field of medical devices, and more specifically, the present invention relates to an intravascular delivery device and its application. Background technique [0002] The morbidity and mortality of acute ischemic stroke caused by large vessel occlusion in the treatment of cardiovascular and cerebrovascular diseases are high, and whether tissue perfusion can be restored in a timely and effective manner is of great significance to the prognosis. In recent years, with the development of interventional materials and technologies, through the establishment of vascular access, delivery of stents or implants, the treatment of vascular lesions has significantly improved the recanalization rate of occluded vessels and extended the treatment time window, showing a good application prospect. [0003] During mechanical thrombectomy and other endovascular interventional procedures, one of the difficult problems is the intravascul...

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Problems solved by technology

[0003] During mechanical thrombectomy and other endovascular interventional procedures, one of the difficult problems is the intravascular manipulation of catheters or delivery of interventional devices, such as coils, balloons or stents, especially during thrombectomy procedures , resulting in debris emboli flowing to the distal end of the blood vessel, resulting in occlusion of the distal blood vessel, causing hidden dangers for the operation or causing pain for the patient to remove the thrombus twice

At the same time, due to the different sizes and tortuous paths of blood vessels in neurovascular, peripheral blood vessels and coronary vascular systems during interventional therapy, it is necessary to cooperate with occlusion balloon catheters, medium catheters, microcatheters, thrombectomy stents, implants or diagnostic instruments, etc. In order to achieve the effect of diagnosis or thrombectomy, but in the actual interventional operation, there is a mismatch between the length or outer diameter of the common interventional catheter and the diseased blood vessel, so that the diseased blood vessel cannot be reached directly to achieve the purpose of treatment and diagnosis. In the process of intravascular delivery, the doctor can only rely on the pushing force of the proximal end of the interventional catheter. Since the distal end of the interventional catheter is relatively soft, when the pushing force is transmitted to the distal end, it is no longer possible for the distal end to pass through various vascular branches or curved blood vessels. Support, which requires a variety of interventional catheters to reach the lesion, and when the distal end of the ordinary delivery catheter does not match the diseased blood vessel, it increases the difficulty of interventional treatment and diagnosis, and prolongs the operation time of the doctor. The effective length of the catheter is not enough to reach the lesion directly, and the replacement of the interventional catheter will cause secondary pain to the patient

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