Excisional Device with Nested Imaging for Vascular Clearance

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Solution Overview

Problem

Current medical devices for vascular interventions lack the capability for minimally invasive, reliable, and widely applicable excisional and interventional procedures, especially for acute and chronic total vessel occlusions.

Innovation Solution

Development of hand-held or mounted, manually or robotically guided medical devices with integrated imaging capabilities for intra-vascular interventional procedures. These devices can remove liquids, solids, and semi-solids during a single insertion and perform multi-phase vascular clearing or restoration procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If current medical devices are used for vascular interventions, then procedures can be performed, but they lack capability for minimally invasive and reliable excisional procedures especially for total vessel occlusions

Engineering Contradiction:

Improvereliability of excisional proceduresVSAvoidcapability for widely applicable excisional procedures

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The excisional device is designed with multiple functional components including cutting elements, imaging capabilities, and material removal mechanisms that can handle various vascular conditions (acute and chronic total occlusions, subtotal occlusions, thrombus, plaque) making it universally applicable across different vascular intervention scenarios

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The device employs nested structures where an inner catheter is positioned within an outer catheter, and cutting elements are housed within the catheter structure. This nesting allows the device to maintain a compact profile for minimally invasive insertion while containing multiple functional components for reliable excisional procedures

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If multiple insertion procedures are performed to remove occlusions, then more thorough clearing can be achieved, but procedure time and patient risk increase

Engineering Contradiction:

Improvethoroughness of vascular clearingVSAvoidprocedure time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The device merges multiple functions (cutting, imaging, material removal, and delivery) into a single integrated system that can be inserted through one percutaneous access point, eliminating the need for multiple separate insertion procedures while achieving thorough vascular clearing in a single procedure

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The device performs preliminary imaging and assessment of the occlusion before initiating cutting and material removal, allowing the operator to plan the excisional procedure in advance and execute it efficiently in a single continuous operation rather than requiring multiple trial insertions

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If imaging capabilities are placed remotely from the manipulation mechanisms, then imaging clarity can be improved, but device portability and integration become difficult

Engineering Contradiction:

Improveclarity of imagingVSAvoidintegration of imaging and excision capabilities

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The imaging system is nested within the excisional device structure, with imaging components (such as ultrasound transducers or optical sensors) positioned within the catheter or near the cutting elements. This nested arrangement maintains device portability and integration while allowing imaging to occur at the precise location of interest for clear, localized visualization

Inventive Principle:

Principle #7Nested doll (Nesting)

4Ease of operation

If percutaneous access is used for vascular intervention, then minimally invasive approach is achieved, but access to certain vascular areas may be limited

Engineering Contradiction:

Improveminimally invasive approachVSAvoidaccess to vascular areas

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The excisional device is segmented into modular components including a deliverable catheter portion and a larger handle portion, with the cutting and imaging functions concentrated at the distal tip. This segmentation allows the device to navigate through small percutaneous access points while maintaining the capability to perform complex excisional procedures in various vascular locations through the flexible, navigable catheter portion

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250169849A1Excisional devices and methods

Publication Date: 2025.05.29 TRANSMED7 LLC

AI summary

A platform device for material excision or removal from vascular structures for either handheld or stereotactic table or robotics platform use may comprise a work element or elements configured to selectively open and close at least one articulable beak or scoopula configured to penetrate and remove intra-vascular materials or obstructions, or follow a central lumen of another device or over a wire in a longitudinal direction. A telescoping set of inner and outer tube axially actuated together and to actuate a beak set, axially actuated differentially, whether controlled mechanically or electronically may be combined with an outer tubular sheath, which may be full circumference or partial circumference along its length, to form a system for rotational non-sharp dissection, coring, severing off, transporting or in the reverse, depositing various fluids and solids for a variety of clinical uses.