Organ Registration Tracking for Motion-Compensated Interventions

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Solution Overview

Problem

Current medical procedures face challenges in accurately and efficiently targeting biopsy or therapy instruments into a target site after a patient has been moved out of a scanner, particularly with minimally invasive procedures, due to the lack of real-time imaging accuracy and the need for excessive radiation exposure, which complicates precise instrument positioning and increases the risk of damaging healthy tissue.

Innovation Solution

A system utilizing templates with integrated position indicating elements and fiducials, combined with a tracking device and imaging technology, enables rapid registration and tracking of soft tissue anatomy, compensating for tissue motion, and facilitating precise instrument guidance through conduits, allowing for dynamic referencing and gating to enhance procedural accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If pre-procedure volumetric imaging (CT, MRI, PET) is used to plan the treatment, then the target site can be identified with high precision, but the patient cannot be moved out of the scanner for the actual procedure

Engineering Contradiction:

Improvetarget site identification precisionVSAvoidprocedure flexibility

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The system separates the imaging function from the procedure execution by using pre-acquired volumetric images for target identification and a tracking system for real-time instrument guidance during the actual procedure performed outside the scanner

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A tracking system with position indicating elements acts as an intermediary between the pre-acquired volumetric images and the actual procedure, enabling correlation of instrument position with target location without requiring the patient to remain in the scanner

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If real-time imaging modalities (X-ray, ultrasound) are used during the procedure, then the procedure can be performed outside the scanner with good flexibility, but the imaging quality and information completeness are insufficient

Engineering Contradiction:

Improveprocedure flexibilityVSAvoidimaging quality

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The system merges the advantages of both approaches by combining pre-procedure volumetric imaging (for high-quality target identification) with real-time tracking technology (for continuous position monitoring during the procedure), creating a hybrid solution that delivers both imaging quality and procedural flexibility

Inventive Principle:

Principle #5Merging (Combining)

3Measurement precision

If cone beam computed tomography (CBCT) is used for real-time imaging, then the scanner can produce images during the procedure, but the scanner must stop producing images once the scan is complete, losing continuous tracking capability

Engineering Contradiction:

Improvereal-time imaging capabilityVSAvoidcontinuous tracking availability

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system replaces the mechanical scanning process with a magnetic field-based tracking system that provides continuous, real-time position information without requiring periodic scanning stops, enabling uninterrupted monitoring of instrument position throughout the procedure

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Measurement precision

If multiple imaging modalities are used to compensate for tissue motion, then the registration accuracy can be improved, but the device complexity and procedure time increase

Engineering Contradiction:

Improveregistration accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The tracking system performs self-registration by using position indicating elements attached to both the patient and the imaging devices, automatically establishing coordinate system correlations without requiring complex external registration procedures or multiple imaging modalities

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12533193B2Systems, methods, and devices for registering and tracking organs during interventional procedures

Publication Date: 2026.01.27 GLOSSOP NEIL

AI summary

Systems, methods, and devices are provided for assisting or performing guided interventional procedures using. The system uses pre-procedure scans of a patient's anatomy to identify targets and critical structures. A measurement device containing position indicating elements or fiducials is placed in a pre-existing or physician created conduit or lumen whose geometry is known from a scan. During a procedure, the pre-procedure scans may be registered to the patient using the position indicating elements or fiducials and the geometry of the conduit. This registration may be used in an intervention to guide instruments that can obtain diagnostic information or provide therapy to the identified targets. During the procedure, the position indicating elements may be used to dynamically compensate for motion to further improve accuracy.