In situ fenestration instrument
A fenestration and device technology, applied in the field of medical devices, can solve the problems of easy displacement, damage to surrounding blood vessels, and high risk, and achieve the effects of improving the accuracy of puncture, saving operation time, and widening the scope of application.
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Example Embodiment
[0055] Example one
[0056] Such as Figure 1-2 ,and Image 6 As shown, an in-situ fenestration device includes a puncture device 200, an adjustable bending catheter 100 and an anchoring catheter 300, which are coaxially fitted in sequence; that is, the adjustable bending catheter 100 is set outside the puncture device 200, and the anchor The fixed catheter 300 is sleeved outside the adjustable curved catheter 100. The three can be assembled by the user before the operation, or they can only be assembled together but not fixedly connected to each other when leaving the factory, or they can be fixed or detachably connected before leaving the factory. connection. The puncture device 200 includes a puncture push rod 202, a puncture needle 201 provided at the distal end of the puncture push rod 202, and a puncture handle 205 provided at the proximal end of the puncture push rod 202. The adjustable bending catheter 100 includes a hollow bending catheter body 110, a traction assembly...
Example Embodiment
[0088] There are several ways to fix the anchor 320 on the anchor catheter body 310:
[0089] Such as Picture 11 As shown in the first embodiment, the distal end of the anchor 320 is fixed at the distal orifice of the anchoring catheter body 310, and a plurality of braided wire ends 321 surround the distal orifice of the anchoring catheter body 310 The wall is arranged around the circumference, so that the distal nozzle of the anchoring catheter body 310 can form a through hole 330, and the through hole 330 is a puncture hole for the needle of the puncture needle to pass through. Each braided wire starts from the end 321 fixed on the distal nozzle of the anchoring catheter body 310, first extends to the outer side of the distal end, reaches the inner wall 900 of the blood vessel, and reverses to turn over, making the side wall 322 of the anchor 320 It supports the inner wall 900 of the blood vessel to form a stable anchor and support. The proximal end of the anchor 320 can be s...
Example Embodiment
[0101] Example two
[0102] The structure of the in-situ fenestration device of the second embodiment is basically the same as the structure of the in-situ fenestration device of the first embodiment. The difference is that in the in-situ fenestration device of the second embodiment, the anchor 320 is anchored by The catheter tube 310 is composed of multiple struts arranged at the distal end. details as follows:
[0103] Such as Figure 17-18 As shown, the anchor 320 is composed of a plurality of struts 301 arranged axisymmetrically at the distal end of the anchoring catheter body 310, and each strut 301 extends from the distal end of the anchoring catheter body 310 to the circumference. Each support rod 301 may be a straight rod, or may have a certain arc after heat setting treatment. Each strut 301 extends from the distal end of the anchoring catheter body 310 to the circumference and is supported on the inner wall 900 of the blood vessel. The end of each strut 301 is fixed at...
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