Intravascular free matter trap
A technology of free substance and trap, applied in the field of intravascular free substance trap, which can solve problems such as failure, damage, adverse effects of surgery, etc.
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no. 1 approach ）
[0105] Such as figure 1 As shown, the intravascular free substance trap 100 of the first embodiment includes: a metal wire 22 as a core material, which penetrates the inside of the tubular member 1 inserted into the blood vessel B; and a filter member installed on the front end of the metal wire 22 3. For example, by arranging the filter member 3 in the blood vessel B during surgery, the filter member 3 captures thrombus and the like that are dislodged during the surgery and prevents them from flowing downstream.
[0106] Each part is explained below.
[0107] The tubular member 1 is called a duct, and is formed of a hollow flexible material having predetermined torque transmission properties. The tubular member 1 is inserted into the blood vessel B after penetrating the skin from outside the body, for example, its front end is arranged near the position where the filter member 3 should be installed.
[0108] The metal wire 22 is a steel product having predetermined bendin...
no. 2 approach ）
[0166] Such as Figure 29 As shown, in this embodiment, the metal wire includes a front end metal wire 2A on which a filter member 3 is installed and a proximal end metal wire on the proximal side of the front end metal wire 2A (the proximal end metal wire 2B1 for transportation or the proximal end metal wire 2B1 for recovery). Base-end metal wire 2B2 ), the front-end metal wire 2A and the base-end metal wire 2B can be connected or separated through a connection structure.
[0167] Like the first embodiment, the front end wire 2A is equipped with the wire 4 , the second wire 5 , and the elastic steel wire 6 , and supports the filter member 3 . In addition, the sliding sleeve 21 is externally embedded in the front end metal wire 2A. in addition, Figure 29 The disk member 8 described in the modified example of the first embodiment is provided, but the disk member 8 is not necessarily provided.
[0168] In the present embodiment, the hook portion 9 is formed by bending or ben...
no. 3 approach ）
[0185] Since the filter 32 and the annular elastic wire 31 of this embodiment are the same as those of the first embodiment, description thereof will be omitted.
[0186] Such as Figure 35 As shown, the intravascular free matter trap 100 of this embodiment is not provided with the linear part 4 and the second linear part 5 , and the filter member 3 is installed on the metal wire 22 by the elastic steel wire 6 .
[0187] The elastic steel wire 6 is the same as the first embodiment, the two ends are installed on the metal wire 22 by sewing and bonding, etc., and are in a ring shape, and the two opposing parts of the elastic steel wire 6 are installed on the ring. On the two opposite parts of the shape elastic wire 31. However, unlike the first embodiment, the elastic steel wire 6 does not slide on the mounting portion, but is fixed to the annular elastic wire 31 by winding wire or the like.
[0188] Next, operation methods such as installation and collection of the intravascu...
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