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Bundling method and bundling device for reducing risk of stent unloading

A risky, binding cavity technology, applied in the field of medical devices, can solve the problems of unloading, loose binding, etc., to achieve the effect of reducing the outer diameter, binding firmly, and strengthening stability

Active Publication Date: 2019-09-17
JW MEDICAL SYSTEMS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem of unloading of existing brackets due to loose binding during use, and provides a binding method and binding device with simple operation and firm binding

Method used

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  • Bundling method and bundling device for reducing risk of stent unloading
  • Bundling method and bundling device for reducing risk of stent unloading

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Pre-binding: Set the binding pressure of the pre-binding machine to 40psi and the time to 8s, adjust the inner diameter of the binding cavity to 0.035inch, put the stent and the balloon into the binding cavity, perform the first binding, and manually place the stent Rotate 90° with the balloon for the second binding, then remove the stent and the balloon from the binding cavity, and add a heat-set sleeve outside the stent to complete the pre-binding;

[0026] (2) Heat setting: place the bracket and balloon pre-bundled in step (1) on the storage tray, place the end covered with the heat setting sleeve on the guide tray, and set the heat setting temperature to 40 ℃, the time is 550s, the other end is connected to the luer connector, and the pressure is applied to the balloon with nitrogen gas to 70psi, and the heat fixation is started;

[0027] (3) Final binding: Set the binding pressure of the final binding machine to 40psi and the time to 10s, adjust the inner diame...

Embodiment 2

[0029] (1) Pre-binding: Set the binding pressure of the pre-binding machine to 50psi and the time to 7s, adjust the inner diameter of the binding machine to 0.031inch, put the stent and the balloon into the binding cavity, perform the first binding, and manually place the stent and The balloon is rotated 90° for the second bundling, and then the stent and the balloon are taken out of the bundling cavity, and a heat-set sleeve is added outside the stent to complete the pre-bundling;

[0030] (2) Heat setting: Place the pre-bundled bracket and balloon on the storage tray in step (1), place the end covered with the heat setting sleeve on the guide tray, and set the heat setting temperature to 50 ℃, the time is 500s, the other end is connected to the Luer connector, and the pressure is applied to the balloon with nitrogen to 85psi, and the heat fixation is started;

[0031] (3) Final binding: Set the binding pressure of the final binding machine to 50psi and the time to 15s, adjus...

Embodiment 3

[0033] (1) Pre-binding: Set the binding pressure of the pre-binding machine to 60psi and the time to 5s, adjust the inner diameter of the binding machine to 0.033inch, put the bracket and the balloon into the binding cavity for the first binding, and manually place the The stent and the balloon are rotated 90° for the second bundling, and then the stent and the balloon are taken out of the bundling cavity, and a heat-set sleeve is added outside the stent to complete the pre-bundling;

[0034] (2) Heat setting: place the stent and balloon pre-bundled in step (1) on the storage tray, place the end covered with the heat setting sleeve on the guide tray, and set the heat setting temperature to 100 ℃, the time is 600s, the other end is connected to the Luer connector, and the pressure of 60psi is applied to the balloon with nitrogen gas, and the heat fixation is started;

[0035] (3) Final binding: Set the binding pressure of the final binding machine to 60psi and the time to 20s, ...

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Abstract

The present invention relates to a bundling method and bundling device for reducing a risk of stent unloading and solves a technical problem that stent unloading is caused due to insecure bundling during use of existing stents. The bundling method comprises the following steps: (1) bundling pressure and time and bundling cavity inner diameter are set, first bundling is conducted, manual rotation for 90 degrees is conducted, then second bundling is conducted, and taking out and heat shaping sleeve are conducted to complete pre-bundling; (2) a stent and a balloon in the step (1) are placed on a material storage tray, one end sleeved with the heat shaping sleeve is placed on a guiding tray, temperature and time are set, the other end is connected with a Luer connector, pressure is applied to the balloon by using nitrogen gas and heat-set shaping is started; and (3) bundling pressure and time and bundling cavity inner diameter are set, the heat shaping sleeve is removed, the stent and balloon are placed in the bundling cavity, after the first bundling, manual rotation for 90 degrees is conducted, and second bundling and taking out are conducted. The present invention also provides the bundling device at the same time. The bundling method and bundling device can be widely applied in technical fields of medical devices.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a binding method and a binding device for reducing the risk of bracket unloading. Background technique [0002] Vascular stent is a medical device that, on the basis of lumen balloon expansion, places an internal stent in the diseased segment to support the stenotic and occluded segment of the vessel, reduce elastic recoil and reshaping of the vessel, and maintain smooth blood flow in the lumen. During stent placement, although the incidence of unloading from the pushed balloon is low when the stent is not released, it can lead to stent thrombosis, acute myocardial infarction, and even death of the patient, so special attention should be paid. The traditional stent binding process is to pre-bundle the stent first, fix the stent in the middle of the mark, and then perform final binding to fix the stent and the balloon firmly, and finally pressurize and heat the balloon. T...

Claims

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Application Information

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IPC IPC(8): A61F2/958
CPCA61F2/958A61F2002/9583
Inventor 周丽源马洪凯张颖曾彦雯
Owner JW MEDICAL SYSTEMS LTD
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