In-situ fenestration device

A window-opening and in-situ technology, which can be used in the fields of human tubular structure devices, medical science, blood vessels, etc., and can solve problems such as easy deviation of the puncture position

Active Publication Date: 2021-04-09
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to at least solve the problem that the needle of the existing puncture member is used to puncture when performing reverse in-situ fenestration, and the puncture position is prone to shift

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0061] to combine Figure 1 to Figure 3 As shown, the present invention proposes an in-situ fenestration device 100 , and the in-situ fenestration device 100 includes a sheath tube 10 , a catheter 20 and a puncture member 30 . The interior of the sheath tube 10 is hollow and the side wall of the distal end is provided with a first opening 112. The catheter 20 is penetrated inside the sheath tube 10 and can move along the axial direction of the sheath tube 10. The distal end of the catheter tube 20 can pass through the first opening 112. An opening 112 protrudes to the outside of the sheath tube 10 , and the catheter 20 is provided with an opening 22 on the side wall of the distal end. The piercing member 30 is installed inside the catheter 20 and can move along the axial direction of the catheter 20. The distal end of the piercing member 30 is in a pre-curved shape in a natural state. When the distal end of the piercing member 30 reaches the position of the opening 22 , the d...

Embodiment approach 2

[0103] to combine figure 1 , Figure 17 and Figure 18 As shown, the in-situ fenestration device 100 of this embodiment is basically the same as that of the first embodiment, including the sheath tube 10 , the catheter 20 and the puncture member 30 . The interior of the sheath 10 is hollow and the side wall of the distal end is provided with a first opening 112. The catheter 20 is penetrated inside the sheath 10 and can move in the axial direction. The distal end of the catheter 20 can extend through the first opening 112. Out to the outside of the sheath tube 10 , a guide port 22 is provided on the side wall of the distal end of the catheter 20 . The puncture member 30 is installed inside the catheter 20 and can move in the axial direction. The distal end of the puncture member 30 is in a pre-curved shape in a natural state. The distal end of the stent-graft 200 is automatically bent through the access opening 22 and reversely punctures the stent-graft 200 . Further, the ...

Embodiment approach 3

[0108] to combine figure 1 and Figure 22 As shown, at least in the end wall of the distal end of the catheter 20, a guide wire channel 23 communicating with the outside of the catheter 20 is provided. Specifically, the proximal end opening of the guide wire channel 23 is opened on the side wall of the catheter 20, and The guide wire channel 23 is disposed near the barrier 40 along the axial direction of the catheter 20 , and the distal opening of the guide wire channel 23 is opened at the distal end of the catheter 20 . Since the catheter 20 usually needs to be pushed through the delivery channel established by the guide wire during the delivery process, and reaches the predetermined position, the opening 22 of the catheter 20 used for reverse fenestration is provided on the side of the distal end of the catheter 20 , so when the catheter 20 is transported with the help of a guide wire, the guide wire needs to pass through the opening 22 on the side of the catheter 20, and w...

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Abstract

An in-situ fenestration device according to the invention comprises a sheath tube, a catheter and a puncture part; the sheath tube is hollow and a first opening is formed in the side wall of the far end of the sheath tube; the catheter is arranged in the sheath tube in a penetrating manner and can move in the axial direction of the sheath tube; the far end of the catheter can extend out of the sheath tube through the first opening; the side wall of the far end of the catheter is provided with a breakover port; the puncture part is arranged in the catheter in a penetrating manner and can move in the axial direction of the catheter; the far end of the puncture part is in a pre-bent shape under a natural state; and when the far end of the puncture part reaches the position of the breakover port, the far end of the puncture part automatically bends and faces the breakover port. According to the in-situ fenestration device of the invention, it can be effectively guaranteed that the puncture part can smoothly pass through the breakover port for puncture, and the accuracy of the puncture position is guaranteed, so that the surgical failure caused by the fact that the puncture part cannot smoothly pass through the catheter or the puncture position deviates is reduced or avoided.

Description

technical field [0001] The invention belongs to the technical field of interventional medical devices, and in particular relates to an in-situ window opening device. Background technique [0002] The in-situ fenestration technique refers to releasing the aortic covered stent first, and then opening a window on the covered stent at the position corresponding to the branch vessel to reconstruct the branch artery, thereby ensuring the blood supply of the branch artery. In situ fenestration is to transplant the traditional covered stent into the aorta and then locate the opening of the target artery without pre-opening the fenestration, and then puncture the branch blood vessel through puncture or laser drilling, and balloon expansion to cover the fenestration. Membrane scaffolds for fenestration. [0003] Since the aorta is thicker than the branch vessels, if the puncture is performed from the aorta (large vessel) to the branch artery (small vessel) (this is puncture in the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/07A61F2/966A61F2/958A61F2/97A61F2/954
CPCA61F2/07A61F2/966A61F2/958A61F2/97A61F2/954A61F2250/0098
Inventor 黄新鑫
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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