Biodegradable double stent

A biodegradable, dual-stent technology, applied in the field of stents, can solve the problems that the stent cannot firmly resist external pressure or force, and the stent cannot be firmly held

Inactive Publication Date: 2009-08-05
TAEWOONG MEDICAL CO LTD +1
View PDF0 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But like this, the bracket is not strong against external pressure or force
[0008] In other words, the stent is not held firmly in the narrowed passage due to the inspiratory or ex

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Biodegradable double stent
  • Biodegradable double stent
  • Biodegradable double stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Exemplary embodiments of the invention will be described in more detail hereinafter, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used throughout the drawings and the description to refer to the same or like parts.

[0025] An exemplary embodiment of the invention features a biodegradable stent having a hollow cylinder with diamond-shaped spaces formed by braiding monofilaments made of biodegradable polymers , a biodegradable stent is fixed to the middle part of the main stent having a hollow cylinder that also has a plurality of diamond-shaped spaces formed by intersecting superelastic shape memory alloy wires or stainless steel wires.

[0026] In detail, such as Figure 2 to Figure 4b As shown in , a biodegradable double stent includes: a main stent 10 with a hollow cylinder 15, the hollow cylinder has multi-cross formed by braiding alloy wires 11 made of superelastic shape memory alloy or stainless...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A biodegradable double stent is used for various organs such as a biliary tract, an esophagus, an airway and a ureter. A biodegradable stent having a hollow cylindrical body woven out of a separate wire made of biodegradable polymer so as to have a plurality of rhombic spaces is fixed to an intermediate portion of a primary stent having a cylindrical body. When administered into the organ, the biodegradable stent has its original function of expanding the organ, and is firmly supported in the inner wall of a narrowed passage of the organ by pressurizing the inner wall of the narrowed passage of the organ. After a predetermined time period has elapsed, the biodegradable stent is gradually degraded away by bodily fluids, thereby enabling the primary stent to be easily removed from the organ.

Description

field of invention [0001] The present invention generally relates to a stent suitable for use in patients with chronic obstructive pulmonary disease (COPD) who do not have a malignancy but who obstruct microvessels such as end ducts, bronchioles, etc. Patients who temporarily exhibit passageway narrowing after surgery on various organs such as the biliary tract, esophagus, airway, and ureter and their surrounding parts. More specifically, the present invention relates to a biodegradable double stent, wherein the biodegradable stent has a monofilament braided hollow cylinder with a plurality of diamond-shaped spaces made of a biodegradable polymer, and is fixed to a The middle part of the main stent of the cylinder, and wherein the biodegradable stent maintains a firm support state by pressing against the inner wall of the organ when inserted into the organ, and then gradually degrades through body fluids when the lesion area heals, thereby enabling the main The stent is easil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61F2/90A61L27/50A61F2/86A61F2/02A61F2/82
CPCA61F2/04A61F2/848A61F2/86A61F2/90A61F2/94A61F2210/0014
Inventor 辛卿珉南曾熙
Owner TAEWOONG MEDICAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap