Enhanced Needleless Connector for Improved Fluid Flow, Safety, and Durability

Publication ID: 24-11857752_0001_PTD
Published: November 07, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Needleless Connector for Improved Fluid Flow, Safety, and Durability,” Published Technical Disclosure No. 24-11857752_0001_PTD, Published November 07, 2025, available at https://archive.pr1or.art/24-11857752_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. 11,857,752.

Summary of the Inventive Concept

The inventive concept presents a suite of direct improvements and enhancements to the original high-flow, needleless connector, addressing inherent limitations and providing better performance, safety, and durability.

Background and Problem Solved

The original patent disclosed a high-flow, needleless connector for safe connections in intravenous and blood administration therapies. However, it had limitations in terms of fluid flow, safety, and durability. The new inventive concept tackles these limitations by introducing optimized internal valve members, pressure-relief valves, anti-rotation mechanisms, reinforced annular walls, wear-resistant coatings, antimicrobial valve members, hydrophobic coatings, visual alignment indicators, and tactile feedback mechanisms.

Detailed Description of the Inventive Concept

The enhanced needleless connector comprises a body with a first mating structure and a second mating structure. The first mating structure features an optimized internal valve member with a reduced pressure drop, a pressure-relief valve, and an antimicrobial valve member. The second mating structure includes a tapered annular wall for enhanced fluid flow, an anti-rotation mechanism to prevent unintended detachment, a reinforced annular wall with a hardened surface, and a wear-resistant coating. Additionally, the connector incorporates a hydrophobic coating, visual alignment indicators, and tactile feedback mechanisms to facilitate safe and efficient assembly.

Novelty and Inventive Step

The new inventive concept's novelty lies in the combination of optimized internal valve members, pressure-relief valves, anti-rotation mechanisms, reinforced annular walls, wear-resistant coatings, antimicrobial valve members, hydrophobic coatings, visual alignment indicators, and tactile feedback mechanisms, which collectively provide a significant improvement over the original patent's design.

Alternative Embodiments and Variations

Alternative embodiments may include different materials, geometries, or configurations for the optimized internal valve members, pressure-relief valves, anti-rotation mechanisms, reinforced annular walls, wear-resistant coatings, antimicrobial valve members, hydrophobic coatings, visual alignment indicators, and tactile feedback mechanisms. Variations may also include different applications, such as use in other medical devices or industries.

Potential Commercial Applications and Market

The enhanced needleless connector has significant commercial potential in the medical device industry, particularly in intravenous and blood administration therapies. The improved performance, safety, and durability of the connector can lead to increased adoption and market share, as well as expansion into new markets and applications.

CPC Classifications

SectionClassGroup
A A61 A61M39/146
A A61 A61M39/26
A A61 A61M2039/1083
A A61 A61M2039/1088
A A61 A61M2039/267

Field of Art

Medical device engineering, specifically intravenous fluid transfer systems and needleless connector design, requiring expertise in fluid dynamics, medical device safety, materials science, and mechanical engineering with advanced knowledge of medical device manufacturing and fluid transfer technologies

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer with 5-7 years of experience in medical device design, familiar with fluid transfer technologies, valve mechanisms, and medical device safety standards, possessing advanced knowledge of materials engineering and medical device manufacturing processes

Obviousness Rationale

A person having ordinary skill in the art would recognize that the published technical disclosure represents predictable variations and incremental improvements to the source patent's fundamental needleless connector design. The proposed modifications address known limitations in medical device engineering through standard problem-solving techniques and well-established design optimization strategies. Each proposed variation represents a logical extension of existing medical device engineering principles applied to the specific context of needleless connectors.

Obvious Combinations & Variations

Source Patent Element
Internal valve member with first and second mating structures
PTD Variation
Optimized internal valve member with reduced pressure drop and pressure-relief valve
Obviousness Reasoning
A PHOSITA would recognize that modifying valve geometry to reduce pressure drop is a predictable design optimization technique in fluid transfer systems, representing a known method of improving device performance through incremental engineering modifications
Source Patent Element
Annular radially inner distally facing step in second mating structure
PTD Variation
Tapered annular wall with anti-rotation mechanism and reinforced hardened surface
Obviousness Reasoning
Modifying structural geometry to enhance mechanical performance is a standard design approach, with finite identifiable solutions that would be obvious to a skilled practitioner seeking to improve connector reliability and fluid transfer characteristics
Source Patent Element
Basic injection port assembly with mating structures
PTD Variation
Addition of antimicrobial valve member, hydrophobic coating, and visual/tactile assembly indicators
Obviousness Reasoning
Incorporating additional safety and usability features represents a predictable design evolution in medical device engineering, utilizing known techniques to address recognized limitations in existing connector technologies
Source Patent Element
Basic connector body with valve mechanisms
PTD Variation
Wear-resistant coating and reinforced annular wall with hardened surface
Obviousness Reasoning
Enhancing material durability through surface treatments and structural reinforcement is a standard engineering approach for improving device longevity, representing a predictable solution within the skill set of an ordinary practitioner
Source Patent Element
Existing needleless connector design
PTD Variation
Comprehensive system of incremental performance and safety improvements
Obviousness Reasoning
Systematic optimization of medical device components through well-understood engineering principles represents a logical and predictable approach to design improvement, utilizing known techniques to address recognized technical challenges
35 U.S.C. § 103 Summary: Based on the teachings of US Patent 11857752 and the comprehensive technical disclosure herein, a person having ordinary skill in the art would find the proposed needleless connector variations obvious and non-patentable, as the disclosed improvements represent predictable design optimizations utilizing standard engineering techniques within the established knowledge of the medical device design field.

Original Patent Information

Patent NumberUS 11,857,752
TitleHigh flow, needleless connector
Assignee(s)RyMed Technologies, LLC