Next-Generation Embolic Particles and Systems

Publication ID: 24-11857694_0005_PTD
Published: October 28, 2025
Category:Future Evolutions & Paradigm Shifts

Legal Citation

pr1or.art Inc., “Next-Generation Embolic Particles and Systems,” Published Technical Disclosure No. 24-11857694_0005_PTD, Published October 28, 2025, available at https://archive.pr1or.art/24-11857694_0005_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. 11,857,694.

Summary of the Inventive Concept

The present inventive concept relates to a family of next-generation embolic particles and systems that offer enhanced capabilities, flexibility, and precision for occluding vascular defects and luminal defects, building upon the foundational concept of embolic particles with adaptable diameters.

Background and Problem Solved

The original patent disclosed embolic particles with adaptable diameters, but these particles had limitations in terms of their material properties, delivery methods, and retrievability. The new inventive concept addresses these limitations by introducing advanced materials, shape-memory properties, and external control mechanisms, enabling more effective and minimally invasive treatments for a broader range of vascular and luminal defects.

Detailed Description of the Inventive Concept

The inventive concept encompasses four primary embodiments: shape-memory embolic particles that change shape in response to a predetermined temperature; bio-absorbable embolic particles designed to dissolve over a predetermined period of time; magnetically-responsive embolic particles that can be manipulated using an external magnetic field; and light-activated embolic particles that can be expanded using a predetermined wavelength of light. These particles can be delivered through microcatheters and are configured to expand to a larger diameter upon implantation, allowing for temporary or permanent occlusion of vascular and luminal defects. The inventive concept also includes methods for treating aneurysms and occluding luminal defects using these advanced embolic particles.

Novelty and Inventive Step

The new claims introduce a paradigm shift in embolic particle technology by incorporating advanced materials and external control mechanisms, enabling a new level of precision, flexibility, and retrievability. The inventive concept's novelty lies in the combination of shape-memory, bio-absorbable, magnetically-responsive, and light-activated properties, which overcome the limitations of the original patent and provide a more comprehensive solution for occluding vascular and luminal defects.

Alternative Embodiments and Variations

Alternative embodiments of the inventive concept could include the use of different materials, such as polymers or metals, to create the embolic particles. Variations could also include different delivery methods, such as using a guidewire or a balloon catheter, or incorporating additional features, such as sensors or imaging agents, to enhance the particles' functionality and visibility.

Potential Commercial Applications and Market

The next-generation embolic particles and systems have significant commercial potential in the medical device industry, particularly in the fields of interventional radiology and vascular surgery. The inventive concept's enhanced capabilities and flexibility make it an attractive solution for treating a wide range of vascular and luminal defects, offering a competitive advantage in the market and potential for significant revenue growth.

CPC Classifications

SectionClassGroup
A A61 A61L24/06
A A61 A61L24/001
C C08 C08F222/385
A A61 A61L2430/36

Field of Art

Medical device engineering, specifically interventional radiology and embolic particle technologies, focusing on vascular occlusion systems with expertise in polymer chemistry, microcatheter delivery, and biomedical materials design

Person of Ordinary Skill (PHOSITA) Profile

A biomedical engineer or materials scientist with advanced degree, specialized knowledge in polymer chemistry, medical device design, and interventional medical technologies, familiar with microcatheter-deliverable implantable devices

Obviousness Rationale

A PHOSITA would recognize that the PTD's variations represent predictable extensions of the source patent's core concept of shape-changing embolic particles designed for microcatheter delivery. The disclosed modifications leverage known materials science techniques and established design principles in medical device engineering. The variations represent logical combinations of known techniques that would be apparent to a skilled practitioner seeking to enhance embolic particle functionality.

Obvious Combinations & Variations

Source Patent Element
Embolic particles configured to fit through microcatheter with adaptable diameter
PTD Variation
Shape-memory particles that change shape in response to temperature
Obviousness Reasoning
Temperature-responsive polymers are a known technique in materials science, and applying this to embolic particles represents a predictable variation using standard design approaches
Source Patent Element
Particles designed for vascular occlusion
PTD Variation
Bio-absorbable particles that dissolve over predetermined time
Obviousness Reasoning
Biodegradable medical implants are well-established, and adapting the core embolic particle design to include controlled dissolution is an obvious engineering solution
Source Patent Element
Microcatheter-deliverable particles with expandable diameter
PTD Variation
Magnetically-responsive particles that can be manipulated using external magnetic field
Obviousness Reasoning
Magnetic guidance in medical devices is a known technique, and integrating magnetic responsiveness into embolic particles represents a straightforward design enhancement
Source Patent Element
Particles configured for luminal defect occlusion
PTD Variation
Light-activated particles that expand using specific wavelength
Obviousness Reasoning
Photosensitive polymers are established in medical materials, and using light activation represents a predictable method of achieving controlled particle expansion
35 U.S.C. § 103 Summary: Pursuant to 35 U.S.C. ยง 103, the variations disclosed in this Published Technical Disclosure would be obvious to a Person Having Ordinary Skill In The Art in view of US Patent 11857694, as the claimed innovations represent predictable combinations of known techniques in embolic particle design, utilizing standard materials science approaches to enhance microcatheter-deliverable occlusion devices.

Original Patent Information

Patent NumberUS 11,857,694
TitleParticles
Assignee(s)MicroVention, Inc.