Enhanced Stent Loading Device for Improved Compatibility and Efficiency

Publication ID: 24-11857441_0006_PTD
Published: October 28, 2025
Category:Direct Improvements & Enhancements

Legal Citation

pr1or.art Inc., “Enhanced Stent Loading Device for Improved Compatibility and Efficiency,” Published Technical Disclosure No. 24-11857441_0006_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857441_0006_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. 11,857,441.

Summary of the Inventive Concept

An advanced stent loading device that accommodates stents of varying sizes, enables real-time pressure control, and ensures accurate stent alignment and hydration, thereby improving stent compatibility, reducing loading errors, and enhancing overall efficiency.

Background and Problem Solved

The original stent loading device patent (ORIGINAL PATENT TITLE) has limitations in terms of stent compatibility, loading accuracy, and efficiency. The new inventive concept addresses these limitations by introducing adjustable conical inner diameters, real-time pressure control, stent alignment mechanisms, and moisture retention features, ensuring improved stent performance and reducing the risk of stent failure.

Detailed Description of the Inventive Concept

The enhanced stent loading device comprises a proximal decreasing diameter section with an adjustable conical inner diameter, allowing for seamless accommodation of stents of varying sizes. A controlled pressure application system enables real-time adjustment of pressure based on stent size and material properties, preventing damage or deformation. Additionally, a stent alignment mechanism ensures accurate stent positioning within the loading device lumen, reducing the risk of stent damage or misalignment. Furthermore, a built-in moisture retention mechanism maintains stent hydration during the loading and delivery process, improving stent performance. The sensor-enabled constant diameter section detects stent collapse and provides real-time feedback to the user, improving loading efficiency and reducing the risk of stent damage or incomplete collapse.

Novelty and Inventive Step

The new inventive concept introduces a novel combination of features that address the limitations of the original patent, including adjustable conical inner diameters, real-time pressure control, stent alignment mechanisms, and moisture retention features. These advancements provide a significant improvement in stent compatibility, loading accuracy, and efficiency, making the new inventive concept non-obvious and novel compared to the original patent.

Alternative Embodiments and Variations

Alternative embodiments of the enhanced stent loading device could include varying designs for the adjustable conical inner diameter section, such as telescoping or sliding components. Additionally, the stent alignment mechanism could be implemented using different materials or geometries, and the moisture retention mechanism could be integrated with the loading device or delivered as a separate component.

Potential Commercial Applications and Market

The enhanced stent loading device has significant commercial potential in the medical device industry, particularly in the field of cardiovascular interventions. The device's improved compatibility, accuracy, and efficiency make it an attractive solution for hospitals, clinics, and medical professionals, offering a competitive advantage in the market.

CPC Classifications

SectionClassGroup
A A61 A61F2/95
A A61 A61F2/2466
A A61 A61F2/9525
A A61 A61F2/958
A A61 A61F2/9522
A A61 A61F2210/0014
A A61 A61F2230/0017
A A61 A61F2230/0071

Field of Art

Medical Device Engineering, specifically interventional cardiology and stent delivery systems, focusing on device design for minimally invasive cardiovascular procedures

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or medical device designer with expertise in catheter and stent technologies, advanced materials science, and mechanical design principles for implantable medical devices, typically holding a master's or doctoral degree with 3-5 years of specialized experience

Obviousness Rationale

A PHOSITA would recognize that the PTD's disclosed variations represent incremental improvements to the source patent's stent loading device, utilizing known engineering techniques and design optimization strategies commonly applied in medical device development. The proposed modifications address predictable limitations in the original design by introducing adjustable geometries, sensor-based monitoring, and enhanced loading mechanisms that would be considered routine problem-solving within the field.

Obvious Combinations & Variations

Source Patent Element
Proximal decreasing diameter section with conical outer and inner diameters for stent loading
PTD Variation
Adjustable conical inner diameter that can accommodate stents of varying sizes
Obviousness Reasoning
A PHOSITA would find it obvious to create a more flexible loading mechanism by introducing adjustable geometries, as dimensional adaptability is a standard design optimization technique in medical device engineering
Source Patent Element
Method of applying pressure to distally translate and collapse stent
PTD Variation
Real-time pressure control system that adjusts based on stent size and material properties
Obviousness Reasoning
Implementing sensor-based pressure monitoring represents a predictable enhancement using known control system technologies, addressing the inherent variability in stent materials and geometries
Source Patent Element
Loading device with constant diameter section for stent collapse
PTD Variation
Sensor-enabled constant diameter section providing real-time feedback on stent collapse
Obviousness Reasoning
Integrating feedback mechanisms is a standard engineering approach to improve device performance, representing an obvious extension of existing monitoring techniques in medical device design
Source Patent Element
Basic stent loading and delivery mechanism
PTD Variation
Built-in moisture retention mechanism to maintain stent hydration during loading and delivery
Obviousness Reasoning
Addressing material preservation through controlled hydration is a predictable solution that a PHOSITA would recognize as a logical improvement to existing stent handling technologies
Source Patent Element
Longitudinal and radial slot mechanisms for stent positioning
PTD Variation
Dedicated stent alignment mechanism to ensure accurate positioning within the loading device lumen
Obviousness Reasoning
Developing more precise alignment techniques represents a routine design optimization that would be obvious to a skilled practitioner seeking to improve device performance and reliability
35 U.S.C. § 103 Summary: Based on a comprehensive analysis of US Patent 11857441 and the disclosed technical variations, a Person Having Ordinary Skill In The Art would find the proposed stent loading device modifications to be obvious extensions of the prior art, lacking the requisite non-obviousness for patent protection. The incremental improvements represent predictable design optimizations that would be readily conceived by a skilled practitioner in medical device engineering, thus rendering potential claims obvious under 35 U.S.C. Section 103.

Original Patent Information

Patent NumberUS 11,857,441
TitleStent loading device
Assignee(s)4C Medical Technologies, Inc.