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Silicone airway stent and preparation method thereof

An airway and silicone technology, applied in the field of medical devices, can solve problems such as easy retention of sputum and airway secretions, and increased risk of infection in patients, so as to overcome bacterial growth, facilitate tracking and inspection, and have long-lasting antibacterial performance Effect

Pending Publication Date: 2022-01-21
广州睿康医疗科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the stent covers the inner wall of the airway, sputum and airway secretions are prone to retention due to bacterial growth, leading to an increased risk of infection for patients

Method used

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  • Silicone airway stent and preparation method thereof
  • Silicone airway stent and preparation method thereof
  • Silicone airway stent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 and 3 As shown, a silicone airway stent includes a main body 1 and an antibacterial hydrophilic layer 2, and the antibacterial hydrophilic layer 2 is attached to the inner wall of the main body 1; the outer wall of the main body 1 is provided with several nail teeth 3; as figure 2 As shown, the structure of the nail teeth 3 is a circular platform with a concave top surface; the body 1 sequentially includes an inner layer, a middle layer and an outer layer from the inside to the outside.

[0041] Wherein, both the inner layer and the outer layer of the stent body 1 are composed of the following raw materials in mass percentage: 96% polymer organosiloxane (MED-4780) and 4% zinc oxide. The middle layer of the bracket is composed of the following raw materials in terms of mass percentage: 85% of high molecular organosiloxane and 15% of barium sulfate.

[0042] Select a hot-pressing mold with four rows of spikes 3 on the surface to prepare a silicone airw...

Embodiment 2

[0051] Such as Figure 4 As shown, a silicone airway stent includes a main body 1 and an antibacterial hydrophilic layer 2, and the antibacterial hydrophilic layer 2 is attached to the inner wall of the main body 1; the outer wall of the main body 1 is provided with several nail teeth 3; The structure of 3 is a circular platform with a concave top surface; the body 1 includes an inner layer, a middle layer and an outer layer in sequence from the inside to the outside.

[0052] Wherein, both the inner layer and the outer layer of the stent are composed of the following materials by mass percentage: 98% of polymer organosiloxane (MED-4770) and 2% of zinc oxide. The middle layer of the stent is composed of the following materials by mass percentage: 90% of high molecular organosiloxane and 10% of barium sulfate.

[0053] Select a hot-pressing mold with four rows of spikes 3 on the surface to prepare a silicone airway stent with three rows of spikes 3 . The body 1 is a hollow cy...

Embodiment 3

[0062] Such as Figure 5 As shown, a silicone airway stent includes a main body 1 and an antibacterial hydrophilic layer 2, and the antibacterial hydrophilic layer 2 is attached to the inner wall of the main body 1; the outer wall of the main body 1 is provided with several nail teeth 3; The structure of 3 is a circular platform with a concave top surface; the body 1 includes an inner layer, a middle layer and an outer layer in sequence from the inside to the outside.

[0063] Wherein, both the inner layer and the outer layer of the stent body 1 are composed of the following raw materials in terms of mass percentage: 97% polymer organosiloxane (MED-4770) and 3% zinc oxide. The middle layer of the stent is composed of the following raw materials in terms of mass percentage: 70% of high molecular organosiloxane and 30% of barium sulfate.

[0064] A silicone airway stent with two rows of spikes 3 on the surface of the hot-pressing mold was selected to prepare four rows of spikes...

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Abstract

The invention discloses a silicone airway stent and a preparation method thereof. The silicone airway stent comprises a body and an antibacterial hydrophilic layer, and the antibacterial hydrophilic layer is attached to the inner wall of the body; a plurality of spike teeth are arranged on the outer wall of the body; the spike teeth are structurally circular truncated cones with concave top surfaces; the body sequentially comprises an inner layer, a middle layer and an outer layer from inside to outside, wherein the outer layer and the inner layer are both prepared from a high-molecular siloxane and zinc oxide composite material, and have the advantages of lasting antibacterial performance and safety; and the middle layer is prepared from a high-molecular siloxane and barium sulfate composite material and has an X-ray developing function. The preparation method comprises the following steps: firstly, respectively preparing a sheet C1 and a sheet C2, then carrying out hot press molding according to the sequence of the sheet C1, the sheet C2 and the sheet C1 from inside to outside to obtain a three-layer body structure consisting of the inner layer, the middle layer and the outer layer, and then coating the inner surface of the body with a functional coating to obtain the antibacterial hydrophilic layer. The multifunctional improvement of the silicone airway stent is realized.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a silicone airway stent and a preparation method thereof. Background technique [0002] Airway stenosis means that the effective ventilation area of ​​the trachea is smaller than the normal diameter, causing patients with clinical symptoms such as asthma, cough, sputum, hemoptysis, and fever. In severe cases, it is difficult to breathe or even respiratory failure. According to the causes and symptoms of stenosis, airway stenosis can be divided into benign airway stenosis and malignant airway stenosis. There are many reasons for benign airway stenosis, including trauma, such as trauma, tracheal intubation, and tracheotomy; and burns, such as chemical burns or steam burns, which can cause airway stenosis. In addition, there are systemic ones, such as tuberculosis, relapsing polychondritis, airway softening, and foreign bodies or stones in the airway can cause airway narrow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/12A61L31/02A61L31/16A61L31/18A61L31/10A61F2/04
CPCA61L31/028A61L31/16A61L31/18A61L31/10A61F2/04A61F2002/046A61L2300/404A61L2300/606A61L2300/216C08L51/08
Inventor 阳范文宋佳奇潘均安陈志琪苏昊橼陈俊宇陈淑萍赵珊陈晓明
Owner 广州睿康医疗科技有限公司