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Aortic stent windowing system

A fenestration system and aortic technology, applied in the field of medical devices, can solve the problems of complicated fenestration steps and excessive use of instruments, and achieve the effect of saving operation time and reducing operation risk

Pending Publication Date: 2019-06-07
吴忠隐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to design an aortic stent fenestration system to solve the problems of complicated fenestration steps and a large amount of instruments used in the prior art

Method used

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Experimental program
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Effect test

Embodiment 1

[0038] A fenestration system for aortic stents, aimed at solving the problems of complicated fenestration steps and a large amount of instruments used in the prior art, capable of synchronously expanding the window after fenestration through the reaming balloon set on the guide rod , to reduce operating steps and equipment usage, to save costs and reduce surgical risks, such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, specifically set to the following structure:

[0039]As the basic setting of the aortic stent fenestration system, the aortic stent fenestration system includes a flexible catheter 1, a flexible guide rod 2 and a guide rod filling joint 6. The catheter 1 and guide rod 2 can follow the trend of human blood vessels and the inner diameter of the vessel. There is a guide rod cavity through the catheter 1, the guide rod 2 can freely pass through or penetrate into the guide rod cavity of the catheter 1, and the guide rod 2 is inserted into...

Embodiment 2

[0049] This embodiment is further optimized on the basis of the above-mentioned embodiments, further to better realize the present invention, especially adopt the following configuration structure:

[0050] A helical cutting edge 2 b for cutting the film is provided at the front end of the guide rod 2 , and the helical cutting edge 2 b extends helically along the axial direction of the guide rod 2 . Moreover, the helical cutting edge 2b needs to be located between the puncture needle 2a and the reaming balloon 2c, and the diameter of the helical cutting edge 2b is larger than the diameter of the puncture needle 2a and smaller than the inflated outer diameter of the reaming balloon 2c. A helical cutting edge 2b is provided at the rear end of the puncture needle 2a to further perform window opening, reaming and through-hole operations on the window position of the coating after the puncture needle 2a has opened the window, and can form a better and larger The window is then ream...

Embodiment 3

[0053] This embodiment is further optimized on the basis of the above-mentioned embodiments, further to better realize the present invention, especially adopt the following configuration structure:

[0054] The puncture needle 2a is a tapered needle to facilitate puncturing the membrane of the stent graft. In addition, a side hole 2d communicating with the guide wire lumen is opened at the inclined surface of the puncture needle 2a, and the side hole 2d is used to assist radiography. After opening the window and reaming the hole, pull out the guide wire 7 from the guide rod 2, inject contrast agent into the guide wire cavity of the refrigerator guide rod 2, and the contrast agent will be discharged from the side hole 2d and adhere to the window opening.

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Abstract

The invention provides an aortic stent windowing system, relates to the field of medical instruments, and solves the problems of complicated steps and a large amount of instruments used in the prior art. The system includes a catheter, a guide rod and a guide rod filling joint; the guide rod is inserted in the catheter, the front end of the guiding rod has a puncture needle, the guiding rod has areaming balloon, the puncture needle is disposed adjacent to the reaming balloon, the internal structure of the guiding rod includes a filament guide cavity and a filling chamber, and the filling cavity of the guiding rod is connected to the reaming balloon; and the rear end of the guiding rod is connected to a guiding rod filling joint, and the filling cavity of the guiding rod is connected to the guiding rod filling joint. Compared with the prior art, the reaming balloon arranged on the guide rod can synchronously expand the window after opening the window, thereby reducing operation steps and the amount of instruments used, and saving cost and reducing the risk of surgery.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an aortic stent fenestration system. Background technique [0002] Aortic dissection is the damage of the intima of the aortic vessel. Blood enters the aortic media from the tear of the aortic intima and separates the media (that is, the blood enters between the two layers of the vessel wall). Extending along the long axis of the aorta forms a true and false two-chamber separation of the aortic wall, which can cause vessel rupture, death, massive blood loss, and severe pain. Cerebral ischemia can lead to hemiplegia, spinal cord ischemia can lead to paraplegia or weakness of the lower limbs, and some dissections accumulate to the blood supply of the lower limbs, which may cause ischemic necrosis of the lower limbs. [0003] At present, for type A aortic dissection or type B dissection with accumulated aortic arch branches, branch reconstruction is required. At present, traditional ...

Claims

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Application Information

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IPC IPC(8): A61F2/82A61F2/95
Inventor 吴忠隐张弘刘双庆
Owner 吴忠隐
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