Enhanced Integrated Z and Wallstent System for Venous Disease Treatment
Legal Citation
Summary of the Inventive Concept
An improved stent system combining the benefits of Z stents and braided stents with advanced features for enhanced performance, safety, and efficiency in treating chronic venous disease.
Background and Problem Solved
The original Integrated Z and Wallstent patent has limitations in terms of stent deployment, tissue inflammation, and precise placement. The new inventive concept addresses these limitations by introducing a flexible metal braided suture for attachment, bio-compatible coating for reduced inflammation, and a tapered end section for easy insertion into the iliac-caval junction.
Detailed Description of the Inventive Concept
The enhanced Integrated Z and Wallstent system comprises a Z stent cylinder attached to a braided stent via a flexible metal braided suture coated with a bio-compatible material. The system features a tapered end section for easy insertion and a surface treatment to enhance endothelialization. The stent can be deployed using a delivery catheter with a built-in ultrasound transducer for precise placement. The system offers improved flexibility, reduced tissue inflammation, and enhanced endothelialization.
Novelty and Inventive Step
The new claims introduce novel features such as the flexible metal braided suture, bio-compatible coating, tapered end section, and surface treatment for enhanced endothelialization. These features provide a non-obvious improvement over the original patent, offering enhanced performance, safety, and efficiency in treating chronic venous disease.
Alternative Embodiments and Variations
Alternative embodiments of the inventive concept could include varying the material composition of the flexible metal braided suture, using different surface treatments for endothelialization, or incorporating additional features such as drug-eluting capabilities or sensors for real-time monitoring.
Potential Commercial Applications and Market
The enhanced Integrated Z and Wallstent system has significant commercial potential in the medical device industry, particularly in the treatment of chronic venous disease. The system's improved performance, safety, and efficiency make it an attractive solution for healthcare providers and patients alike.
CPC Classifications
| Section | Class | Group |
|---|---|---|
| A | A61 | A61F2/90 |
| A | A61 | A61F2/82 |
| A | A61 | A61F2/848 |
| A | A61 | A61F2/86 |
| A | A61 | A61F2230/0028 |
| A | A61 | A61F2230/0069 |
| A | A61 | A61F2250/001 |
Section 103 Obviousness Analysis (PHOSITA)
Field of Art
Interventional Vascular Medical Devices, specifically stent design and deployment for venous system treatments, requiring advanced knowledge of materials engineering, medical device design, and minimally invasive surgical techniques
Person of Ordinary Skill (PHOSITA) Profile
A biomedical engineer or medical device designer with expertise in stent technologies, familiar with metallic braiding techniques, vascular anatomy, and materials science related to implantable medical devices
Obviousness Rationale
A person having ordinary skill would recognize that the PTD's variations represent predictable incremental improvements to the source patent's integrated Z and Wallstent design. The proposed modifications leverage known techniques in medical device engineering to enhance stent performance and deployment. The technical solutions represent logical extensions of existing stent technologies that would be apparent to a skilled practitioner seeking to optimize venous stent systems.
Obvious Combinations & Variations
Original Patent Information
| Patent Number | US 11,857,440 |
|---|---|
| Title | Integrated Z and Wallstent |