Loop type blood vessel foreign body extractor

Abstract

The invention discloses a loop type blood vessel foreign body extractor, and belongs to blood vessel intervention equipment. The loop type blood vessel foreign body extractor comprises a single-cavityouter sheath tube, a double-cavity catheter inserted in the single-cavity outer sheath tube and a guide wire inserted into the cavities of the double-cavity catheter. The proximal end of the double-cavity catheter is provided with double guide wire holes which communicate with two catheter cavities; and the guide wire is inserted into the cavities of the double-cavity catheter through the doubleguide wire holes. One catheter body of the double-cavity catheter has a fixed-camber pre-shaped distal tip, the distal end of the other catheter body of the double-cavity catheter is flexible, and thedistal ends of the two catheter bodies may be butted to form a loop. The loop type blood vessel foreign body extractor has the beneficial effects that the fixed-camber pre-shaped catheter can simplyand quickly form a guide wire ring for wrapping a foreign body, and the foreign body in a blood vessel without a free end is simply and rapidly locked and moves out of the body; and the technical difficulty of taking out the intravascular foreign body without the free end is greatly reduced, the operation time is shortened, and meanwhile, the damage of radioactive rays is reduced.

Description

technical field [0001] The invention belongs to vascular intervention equipment, in particular to a snare-type vascular foreign body extractor. Background technique [0002] In the current fields of vascular surgery, neurology, cardiovascular medicine, and interventional departments engaged in vascular-related interventional surgery, minimally invasive interventional surgery is the most mainstream surgical method. Interventional surgery has the advantages of less trauma and faster recovery, but it also has its disadvantages, such as foreign bodies in blood vessels caused by broken interventional devices. This requires the doctor to remove these intravascular foreign bodies, especially the temporary vena cava filter. [0003] As mentioned above, when vascular foreign bodies need to be removed during interventional surgery, especially during the removal of temporary vena cava filters, traditional intravascular foreign body snares are commonly used at present, including single...

AI Technical Summary

Problems solved by technology

However, for intravascular foreign bodies without a free end, this snare cannot function

LOOP technology can remove foreign bodies without free ends, but for LOOPs that form wrapped foreign bodies, strong surgical skills are required (mainly including catheters with guide wires to wrap foreign bodies and snares to snare free ends of guide wires to form LOOPs), and the operation time is prolonged , which also means increased radiation damage to patients and doctors

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