A kind of vascular stent installation device

A technology for installing devices and vascular stents, applied in stents and other directions, can solve problems such as tissue damage and blockage of blood vessels during blood supply suspension time, and achieve the effects of reducing surgical risks, improving success rate, and ensuring accuracy

Active Publication Date: 2021-02-05
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the existing balloon is inflated with fluid, it will completely block the blood vessel. If the vascular stent cannot be deployed to an appropriate degree at one time during installation, it is necessary to operate the balloon again to expand the vascular stent after image detection. , it is easy to cause damage to some tissues due to the prolonged suspension of blood supply

Method used

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  • A kind of vascular stent installation device
  • A kind of vascular stent installation device
  • A kind of vascular stent installation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 2 As shown, the installation device includes an annular airbag body 100 provided with an inflation and deflation port 140. The annular airbag body 100 is composed of a tubular inner wall 110, a tubular outer wall 120 and two connecting rings 130; the tubular inner wall 110 is made of a non-extensible flexible film , the two ends of the tubular inner wall 110 are connected to the inner edges of the two connecting rings 130 respectively; The body 100 is integrally formed into a cylinder with a central axis passing through a channel; the connecting ring 130 is made of an inextensible flexible film. Specifically, high-density polyethylene film or medical PVC film can be used for the non-extensible flexible film, and polytetrafluoroethylene film can be used to reduce friction; latex film, silicone film or rubber film can be used for the extensible flexible film.

[0052] Since the tubular inner wall 110, the tubular outer wall 120 and the connecting ring 130...

Embodiment 2

[0055] Such as image 3 As shown, on the basis of Embodiment 1, in order to allow the annular airbag body 100 to retract in an orderly manner, a plurality of support bars 200 are fixedly connected to the connecting ring 130, and the specific number can be determined according to Depending on the size of the connecting ring 130, preferably 5 to 30, wherein figure 2 The case of 20 roots is shown. It should be noted that there must be a space between the support bars 200 so that the connecting ring 130 has space for retraction and folding. One end of the support bar 200 is close to the inner edge of the connection ring 130, and the other end of the support bar 200 is close to the outer edge of the connection ring 130; all the support bars 200 are evenly distributed, and the support bar 200 has an included angle with the radial direction of the connection ring 130, forming a spiral Divergent arrangement. The setting of the support bar 200 can be retracted in an orderly manner ...

Embodiment 3

[0062] Such as Figure 5 and 6 As shown, the annular balloon also includes a catheter 400 adapted to the shaped balloon body 100, the axis of the catheter 400 runs through a guide wire channel, and the catheter 400 passes through the annular balloon body 100 and is fixedly connected to the tubular inner wall 110; the tube wall of the catheter 400 is opened There is an inflation and deflation channel 401 , one end of the inflation and deflation channel 401 is connected to the inflation and deflation port 140 of the annular airbag body 100 , and the other end of the inflation and deflation channel 401 is connected to the inflation and deflation tube 410 . Through the inflation and deflation tube 410, gas or liquid can be filled into the shaped balloon body 100 to control the swelling of the ring-shaped balloon body 100, thereby driving the vascular stent to expand and install. After the vascular stent is installed, the gas or liquid in the annular airbag body 100 is drawn out t...

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PUM

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Abstract

The invention discloses a method for installing a vascular stent and an installation device, which belong to the technical field of biomedical implants. The installation method includes the following steps: angiography, constructing a three-dimensional model of a blood vessel; analyzing and evaluating a diseased blood vessel, and selecting a vascular stent; Select the installation device for the stent, and the air bag of the installation device is an annular air bag that can allow blood to pass through after expansion; use the installation device to install the vascular stent; angiography to detect whether the vascular stent has expanded to a predetermined size, and if so, take out the installation device; otherwise, return to the step of installing the vascular stent . The present invention adopts the mounting device with the annular air bag, and the blood can pass through smoothly during the process of deploying the annular air bag to install the vascular stent, and the tissue will not be damaged due to ischemia even if the installation time is long.

Description

technical field [0001] The invention belongs to the technical field of biomedical implants, and in particular relates to a method and a device for installing a vascular stent. Background technique [0002] Balloon-expandable vascular stent means that on the basis of balloon expansion and forming, an internal stent is placed in the diseased segment to support the stenotic occluded segment of the vessel, reduce the elastic retraction and reshaping of the vessel, and maintain the smooth blood flow in the lumen . The expansion of the balloon-expandable stent is driven by a balloon, and the expansion volume of the balloon controls the degree of expansion of the stent. [0003] If the degree of expansion of the vascular stent is too small, it will not support the blood vessel in place. On the one hand, it may further aggravate the blockage of the blood vessel, and on the other hand, it may fall off or be displaced, causing more serious harm. If the degree of expansion of the vas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/958
CPCA61F2/958
Inventor 李真林胡斯娴徐旭帅桃彭婉琳张金戈
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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