Thrombus aspiration catheter and application thereof
A technique for suctioning a catheter and a thrombus, which is applied to a thrombus suction catheter and its application field, can solve the problems of high preparation cost, cumbersome use method, complicated structure of a thrombus removal device, etc., and achieves a simple overall structure and efficient and convenient operation for thrombus extraction. Effect
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Embodiment 1
[0040] A catheter for aspiration of thrombus, comprising a suction catheter body 12, a guide wire 16 arranged through a guide wire seat 15 at the front of the suction catheter body 12, and a penetratingly arranged at the rear of the suction catheter body 12. Luer connector 11 ; a thrombus stripping frame 14 is arranged between the suction catheter body 12 and the wire guide seat 15 .
[0041] The thrombus stripping rack 14 is a cutting piece 41 whose middle section protrudes along the radial direction of the suction catheter body 12 .
[0042] At least one edge of the cutting sheet is an acute edge.
[0043] Such as Figure 4 As shown, the outer edge of the cross-section C of the cutting sheet includes two angles α and β. The α and β may be one of the acute angles, or both of the α and β may be acute angles to ensure that the cross-section C The outside corners are sharp enough. When the thrombus stripping frame is operated to rotate in the blood vessel, the thrombus stripp...
Embodiment 2
[0045] Such as figure 1 shown.
[0046]The thrombus aspiration catheter as described in Embodiment 1 is different in that the thrombus stripping rack 14 includes more than two arc-shaped cutting pieces, and one end of the arc-shaped cutting slices, that is, one end of the thrombus stripping rack 14, passes through The guide wire base 15 is connected with the guide wire 16 ; the other end of the arc-shaped cutting piece, that is, the other end of the thrombus stripping rack 14 , is connected with the suction catheter body 12 .
[0047] The arc-shaped cutting piece includes an outer surface and an inner surface, and the width of the inner surface is smaller than the width of the outer surface.
[0048] The radius of curvature of the outer arc of the thrombus stripping rack is less than or equal to 2mm.
[0049] An intercepting membrane is arranged between the guide wire seat and the thrombus stripping frame, and the intercepting membrane is a permeable membrane.
Embodiment 3
[0051] Such as figure 2 , 3 , 4, and 5.
[0052] A catheter for aspiration of thrombus as described in Example 2, the difference is that a drain hole 19 and an intercepting membrane 42 are sequentially arranged between the guide wire base 15 and the thrombus stripping frame 14, and the intercepting The membrane is a non-permeable membrane.
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