Filtering device
A filter and filter structure technology, applied in the field of medical devices, can solve the problems of large thrombus, renal artery occlusion, and affecting the iliac artery, etc., to achieve the effect of improving accuracy, improving effect, and shortening length
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Embodiment 1
[0038] Please refer to figure 1 and figure 2 , figure 1 It is a schematic structural view of the filter device in Embodiment 1 of the present invention, figure 2 for figure 1 The schematic plan view of the whole unfolded filter device in . Such as figure 1 and figure 2 As shown, the filter device includes: a network-shaped support structure 2 and at least one internal filter structure 1 connected to the support structure 2, each of the internal filter structures 1 and the support structure 2 along the axial direction At least partially overlapping; the internal filter structure 1 includes several support rods 10 , the first ends of all the support rods 10 are collectively connected, and the second ends of all the support rods 10 are connected to the support structure 2 .
[0039] Please refer to Figure 3a ~ Figure 3b , which are schematic diagrams of several configurations of the support structure in Embodiment 1 of the present invention, such as Figure 3a and F...
Embodiment 2
[0046] In order to improve the efficiency of the filter device in trapping thrombus, the filter device in this embodiment may include at least one internal filter structure 1 connected to the support structure 2, and also include a filter connected to one or both ends of the support structure 2 At least one external filter structure 1'. During actual application, the filter device can be designed as a single-layer or multi-layer filter screen (here the number of layers of the filter screen is equal to the sum of the internal filter structure 1 and the quantity of the external filter structure 1' used by the filter device) according to actual needs. Wherein, the external filter structure 1' includes several support rods, the first ends of all the support rods are collectively connected, and the second ends of all the support rods are connected to the support structure 2, and the external filter structure 1' There is no overlap with the support structure 2 in the axial direction...
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