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Urethral stent for non-invasive surgery and preparation method thereof

A technology for urethra and surgery, which is applied in the field of urethral stent and its preparation for non-invasive implantation surgery, which can solve the problems of lack of personalized customization, easy movement of urine, and poor fit, and achieve excellent mechanical properties, improve curative effect, and reduce The effect of surgical difficulty

Active Publication Date: 2020-04-10
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application solves the technical problems of the existing degradable stents such as poor fit, complicated operation, easy movement during urine flushing, and lack of personalized customization, and then provides a controllable degradable stent with good mechanical properties. , a custom-made, comfortable urethral stent for non-invasive implantation surgery, the application also provides a preparation method for the urethral stent

Method used

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  • Urethral stent for non-invasive surgery and preparation method thereof
  • Urethral stent for non-invasive surgery and preparation method thereof
  • Urethral stent for non-invasive surgery and preparation method thereof

Examples

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Embodiment 1

[0034] This embodiment provides a urethral stent for non-invasive surgery, including: a main structure 10 made of polylaurin material, and the main structure 10 is as follows at a normal temperature lower than 30°C. figure 1As shown in the elongated strip with a diameter of 3 mm, the normal temperature state in this embodiment refers to a temperature lower than 30°C, specifically in the range of 15°C to less than 30°C. A degradable alloy wire is coiled on the outer surface of the main structure. In this embodiment, the degradable alloy wire is a cylindrical wire-shaped magnesium alloy wire with a diameter of 0.1 mm. The magnesium alloy wire is on the outer surface of the main structure. The winding density per unit length was 50 turns / cm.

[0035] The surface of the main structure 10 and the degradable alloy wire 6 is coated with lubricating and antibacterial drugs. In order to facilitate implantation into the urethra during the operation, the front end of the main structure ...

Embodiment 2

[0043] This embodiment provides a urethral stent for non-invasive surgery, including: a main structure 10 made of polylaurin material, and the main structure 10 is as follows at a normal temperature lower than 30°C. figure 1 As shown in the elongated strip with a diameter of 5 mm, the normal temperature state in this embodiment refers to a temperature lower than 30°C, specifically between 15°C and less than 30°C. A degradable alloy wire is coiled on the outer surface of the main structure. In this embodiment, the degradable alloy wire is a cylindrical wire-shaped magnesium alloy wire with a diameter of 1 mm. The magnesium alloy wire is in the unit length of the main structure. The winding density is 2 turns / cm. The surface of the main structure 10 and the degradable alloy wire 6 is coated with lubricating and antibacterial drugs. In order to facilitate implantation into the urethra during the operation, the front end of the main structure in this embodiment is a cone structur...

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Abstract

The invention provides a urethral stent for non-invasive surgery. The urethral stent comprises a main body structure made of a polydodecyl glyceride (PGD) material and a degradable alloy wire, whereinthe main body structure is in a thin strip shape at normal temperature and is converted into a spiral structure after being implanted into a human body; and the degradable alloy wire is coiled on theouter surface of the main body structure. The main body structure of the stent is made of polydodecyl glyceride, and the main body structure is in a slender strip shape at normal temperature, so thatthe main body structure is convenient to insert into a urethra in an operation process; and the polydodecyl glyceride has a memory effect at body temperature, can deform after being implanted into ahuman body to become a spiral structure, and plays a role in expanding the urethra, so that operation difficulty is obviously reduced, and comfort of the implanted stent is improved. According to theinvention, the degradable alloy wire rod is coiled on the main body structure, so that the stent structure can be supported, and meanwhile, the stent structure can be deformed together with the PGD material to play a role in expanding the urethra.

Description

technical field [0001] The invention belongs to the technical field of urethral stents, and in particular relates to a urethral stent for non-invasive implantation operations that is controllable in degradation, has good mechanical properties, can be customized individually, and is comfortable, and a preparation method thereof. Background technique [0002] Prostatic hyperplasia is a common and frequently-occurring disease in middle-aged and elderly men. It can easily cause stenosis of the urethral opening and lead to urinary retention. The existing clinical treatment measures are mainly open skin peeling surgery or cavity surgery, but this kind of surgery is more traumatic and risky, so some patients cannot accept the above-mentioned surgery due to factors such as age or low wound healing ability. Surgery can only be treated with adjuvant drug therapy or intervention with a permanent indwelling catheter. However, there are still big problems in these two methods: drug trea...

Claims

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Application Information

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IPC IPC(8): A61F2/88A61L31/06A61L31/14
CPCA61F2/885A61F2210/0004A61F2210/0014A61F2240/001A61F2250/0067A61L31/06A61L31/14A61L31/148C08L67/00
Inventor 王丽珍候博成林承延靳凯翔杜鑫樊瑜波
Owner BEIHANG UNIV
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