Enhanced Catheter Assembly for Prosthetic Heart Valve Delivery

Publication ID: 24-11857416_0001_PTD

Published: October 28, 2025

Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Catheter Assembly for Prosthetic Heart Valve Delivery,” Published Technical Disclosure No. 24-11857416_0001_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857416_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. 11,857,416.

Summary of the Inventive Concept

An improved catheter assembly featuring adjustable stiffness, self-cleaning mechanisms, and antimicrobial coatings to enhance navigation, reduce infection risk, and optimize prosthetic heart valve placement.

Background and Problem Solved

The original patent's catheter assembly, while effective, has limitations in navigating tortuous anatomy and minimizing infection risk. The new inventive concept addresses these limitations by incorporating advanced features to improve the delivery of prosthetic heart valves.

Detailed Description of the Inventive Concept

The enhanced catheter assembly comprises a shaft with an adjustable stiffness mechanism, allowing real-time optimization of navigation through complex anatomy. The connector assembly features a sensor to detect and respond to changes in shaft stiffness. Additionally, the shaft incorporates a self-cleaning mechanism to prevent biofilm accumulation, and the connector assembly has an antimicrobial coating to reduce infection risk. The system also includes a tracking module to generate a 3D map of the catheter assembly's path through the body. Furthermore, the inventive concept enables customization of the catheter assembly for specific patients using patient-specific imaging data.

Novelty and Inventive Step

The new claims introduce novel features such as adjustable stiffness, self-cleaning mechanisms, and antimicrobial coatings, which are not present in the original patent. These advancements provide a significant improvement in navigation, safety, and efficiency, making the inventive concept non-obvious and novel compared to the prior art.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include varying the type and material of the adjustable stiffness mechanism, using different antimicrobial coatings, or integrating additional sensors for real-time feedback. Variations could also involve adapting the catheter assembly for use in different medical procedures or anatomical regions.

Potential Commercial Applications and Market

The enhanced catheter assembly has significant commercial potential in the cardiovascular device market, particularly for transcatheter aortic valve replacement (TAVR) and other minimally invasive heart valve procedures. The improved navigation and reduced infection risk offered by this inventive concept could expand the market for prosthetic heart valves and increase adoption rates.

CPC Classifications

Section	Class	Group
A	A61	A61F2/2436
A	A61	A61F2/2433
A	A61	A61F2/2439

Section 103 Obviousness Analysis (PHOSITA)

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Field of Art

Medical device engineering, specifically endovascular catheter systems for interventional cardiovascular procedures, with expertise in mechanical design, material science, and medical device manufacturing

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer with advanced degree, 5-7 years experience in medical device design, familiar with catheter mechanics, connector assemblies, and minimally invasive delivery systems, possessing knowledge of materials, manufacturing techniques, and regulatory requirements

Obviousness Rationale

A person having ordinary skill would recognize that the PTD's disclosed variations represent predictable engineering improvements to the source patent's catheter assembly design. The technical extensions involving adjustable stiffness, self-cleaning mechanisms, and sensor integration are logical progressions that address known limitations in existing catheter technologies. These modifications represent incremental advancements using standard engineering problem-solving techniques within the medical device domain.

Obvious Combinations & Variations

Source Patent Element

Connector assembly with rotatable components and slotted pin mechanisms

PTD Variation

Adding a sensor to detect and respond to shaft stiffness changes

Obviousness Reasoning

Integrating sensors into mechanical assemblies is a well-established technique in medical device engineering, representing a predictable application of known technological solutions to enhance functional monitoring

Source Patent Element

Catheter shaft designed for endovascular navigation

PTD Variation

Implementing an adjustable stiffness mechanism to optimize anatomical traversal

Obviousness Reasoning

Adaptive stiffness represents a known design approach for improving catheter maneuverability, utilizing material science principles and established engineering techniques to solve navigation challenges

Source Patent Element

Connector assembly with mechanical coupling features

PTD Variation

Incorporating antimicrobial coating and self-cleaning mechanisms

Obviousness Reasoning

Surface modification techniques to reduce infection risk are standard practice in medical device design, representing a predictable solution using known material engineering approaches

Source Patent Element

Catheter assembly for prosthetic heart valve delivery

PTD Variation

Generating 3D navigation mapping using integrated sensor data

Obviousness Reasoning

Implementing tracking and mapping technologies is a foreseeable extension of existing medical imaging and navigation techniques, representing an incremental improvement using standard engineering approaches

Source Patent Element

Catheter assembly with configurable mechanical components

PTD Variation

Patient-specific customization using imaging data to optimize shaft parameters

Obviousness Reasoning

Personalized medical device design using patient-specific imaging is a known technique in interventional cardiology, representing a predictable application of computational modeling and design optimization

35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857416 and the published technical disclosure, a person having ordinary skill in the art would find the claimed variations obvious, as they represent predictable engineering solutions using known techniques in medical device design. The disclosed improvements in catheter assembly functionality, including adjustable stiffness, sensor integration, and antimicrobial features, constitute obvious extensions of the prior art that would be readily conceived by a skilled practitioner without requiring inventive insight.

Original Patent Information

Patent Number	US 11,857,416
Title	Catheter assembly
Assignee(s)	EDWARDS LIFESCIENCES CORPORATION