Published Technical Disclosure Archive

Enhanced Vascular Access Systems with Advanced Features

Publication ID: 24-11857750_0001_PTD
Published: November 07, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Vascular Access Systems with Advanced Features,” Published Technical Disclosure No. 24-11857750_0001_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857750_0001_PTD
This technical disclosure describes improvements that would be readily apparent to a Person Having Ordinary Skill In The Art (PHOSITA) when considered in combination with the foundational architecture disclosed in U.S. Patent No. 11,857,750.

Summary of the Inventive Concept

This inventive concept discloses a series of direct improvements and enhancements to vascular access systems, providing safer, more efficient, and more reliable solutions for patients undergoing long-term dialysis.

Background and Problem Solved

The original patent, 'Vascular access systems and methods', addressed the growing need for effective vascular access solutions in the dialysis market. However, it had limitations, such as the risk of infection, thrombosis, and biofilm formation. The new inventive concept tackles these limitations by introducing advanced features, including self-cleaning ports, real-time blood flow and pressure sensors, bioabsorbable coatings, and valves that reduce the risk of infection and thrombosis.

Detailed Description of the Inventive Concept

The enhanced vascular access system comprises a self-cleaning port with a nanocoating that inhibits bacterial adhesion and biofilm formation, reducing the risk of infection. The port is configured to be implanted outside of a target body lumen and is connected to at least one conduit with a bioabsorbable coating that promotes tissue integration and reduces inflammation. The system also includes a sensor to detect changes in blood flow and pressure, providing real-time feedback to healthcare providers. Furthermore, the system features a valve that seals the device from blood flow when not in use, reducing the risk of thrombosis and infection.

Novelty and Inventive Step

The new claims introduce several novel features that overcome the limitations of the original patent. The self-cleaning port with a nanocoating, the bioabsorbable coating on the conduit, and the real-time sensor for blood flow and pressure monitoring are all new and non-obvious improvements that enhance the safety and efficiency of vascular access systems.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include varying the material composition of the nanocoating, using different types of sensors for blood flow and pressure monitoring, or incorporating additional features such as anti-inflammatory coatings or antimicrobial surfaces. These variations would ensure broad conceptual coverage and adaptability to different patient needs and clinical scenarios.

Potential Commercial Applications and Market

The enhanced vascular access system has significant commercial potential in the growing dialysis market, projected to reach $99.2 billion by 2024. The system's advanced features would appeal to healthcare providers and patients seeking safer, more efficient, and more reliable solutions for long-term dialysis. The target industries include medical device manufacturers, dialysis centers, and healthcare providers specializing in nephrology and vascular access.

CPC Classifications

SectionClassGroup
A A61 A61M39/0247
A A61 A61M2039/027
A A61 A61M2039/0258
A A61 A61M2205/0266

Field of Art

Medical Device Engineering, specifically Vascular Access Systems and Implantable Medical Devices for Chronic Disease Management, with expertise in biomaterials, surface coatings, and fluid management technologies

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or medical device designer with advanced degree, 3-5 years experience in vascular access device development, familiar with materials science, infection prevention strategies, and medical device regulatory requirements

Obviousness Rationale

A PHOSITA would recognize that the disclosed variations represent predictable incremental improvements to the source patent's vascular access system, utilizing known techniques in surface modification, sensor integration, and infection prevention that are standard design considerations in medical device engineering. The technical solutions proposed are logical extensions of existing knowledge, addressing known challenges in long-term implantable medical devices. The modifications represent routine optimization strategies that would be apparent to a skilled practitioner seeking to enhance device performance and patient safety.

Obvious Combinations & Variations

Source Patent Element
Port configured to be implanted outside of a target body lumen
PTD Variation
Adding nanocoating to inhibit bacterial adhesion and biofilm formation
Obviousness Reasoning
Surface modification to prevent infection is a well-established technique in medical device design, with numerous prior art references demonstrating antimicrobial nanocoatings as a predictable solution to device-related infection risks
Source Patent Element
Conduit with fluid pathway
PTD Variation
Incorporating bioabsorbable coating to promote tissue integration and reduce inflammation
Obviousness Reasoning
Material surface enhancement to improve biocompatibility is a known strategy in implantable medical devices, representing a predictable design optimization that a PHOSITA would find obvious
Source Patent Element
Vascular access system with conduit and port
PTD Variation
Adding sensor for real-time blood flow and pressure monitoring
Obviousness Reasoning
Integration of diagnostic sensors into medical devices is a common design approach, with numerous precedents in medical technology for adding monitoring capabilities to improve patient safety and device performance
Source Patent Element
Port and conduit system
PTD Variation
Implementing a valve mechanism to seal device and prevent blood flow when not in use
Obviousness Reasoning
Preventing contamination and managing fluid pathways are standard design considerations in medical access systems, with multiple known techniques for creating sealed, controllable access points
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857750 and the disclosed technical variations, a person having ordinary skill in the art would find the claimed innovations obvious and therefore unpatentable. The proposed modifications represent predictable engineering solutions that would be apparent to a skilled practitioner, utilizing known techniques in surface modification, sensor integration, and infection prevention strategies to incrementally improve existing vascular access system technologies.

Original Patent Information

Patent NumberUS 11,857,750
TitleVascular access systems and methods