Temporary filter with thrombus collector

Abstract

The invention discloses a temporary filter with a thrombus collector, in particular a filter for filtering thrombus that can be placed in the human body, a recovery line that can be connected with the filter, and a thrombus collection that can be displaced along the recovery line on the recovery line The sleeve part of the thrombus collector is sheathed with a recovery sheath that can be displaced along the sleeve. The invention can be implanted from the jugular vein or placed against the blood flow and is easy to operate, which solves the problem that the existing retrievable filter or temporary filter is easy to cause thrombus to fall off when taken out, reduces the operation risk to the greatest extent, and is easy to recycle.

Description

Technical field: [0001] The invention relates to an interventional medical device, in particular to a temporary filter suitable for recovering thrombus implanted in the jugular vein or placed against the blood flow. Background technique: [0002] Pulmonary embolism has an acute onset, is prone to recurring, and has a high mortality rate. Recurrent small-area pulmonary embolism (involving less than 30% of the pulmonary vascular bed) can cause or aggravate respiratory diseases such as chronic pulmonary hypertension; large-area pulmonary embolism (more than 50% of the pulmonary vascular bed) can occur in a short It leads to death within a period of time, and its case fatality rate is 30%. Most of the disease is secondary to peripheral venous thrombosis. The use of clinical filters is mainly aimed at high-risk patients within a limited period of time, especially those who cannot receive anticoagulant therapy or have complications after anticoagulant therapy, and those who stil...

AI Technical Summary

Problems solved by technology

[0003] The existing temporary thrombus filter has the problem and risk of new thrombus falling off when it is recovered and taken out. This is because the filter will be compressed into the sheath during the recovery process, and the deformation change is relatively small from the fully expanded state to the compressed state. Large, it will cut and break the intercepted thrombus, and enter the pulmonary artery with the direction of blood flow, causing pulmonary embolism or entering other blood vessels of the human body to cause embolism

Therefore, before the filter is taken out, all the blocked thrombus must be dissolved before it can be recovered. However, the existing technology cannot completely dissolve the blocked thrombus, and the filter with part of the thrombus is often taken out forcibly, which is extremely difficult. It is easy to cause the thrombus attached to the filter or the broken thrombus generated during the contraction of the filter to fall off, causing new blood vessel embolism and increasing the risk of surgery

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