Caliper Tissue Fixation Device for Multi-Plane Stabilization
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Solution Overview
Problem
Current medical imaging and intervention procedures face challenges in maintaining accurate tissue fixation, especially for extended regions of tissue, as existing systems often rely on a single plane of fixation, which can lead to insufficient stabilization and reduced accuracy due to tissue pliability and patient movement.
Innovation Solution
A caliper device with parallel sliding caliper arms and a center fixation assembly that allows for secondary and tertiary plane fixation, enabling stabilization and thickening of tissue regions, compatible with existing primary plane fixation systems and various imaging modalities, and constructed from radiotransparent materials for versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only primary plane fixation is used, then device complexity is reduced, but tissue stabilization accuracy deteriorates due to insufficient fixation in extended tissue regions
Solution Approach 1:
The fixation system is segmented into multiple independent planes (primary, secondary, and optional tertiary planes), each capable of fixing tissue separately. This allows the system to achieve three-dimensional stabilization without requiring a completely new complex device, as each plane can be implemented as a modular component.
Solution Approach 2:
The invention extends fixation from a single primary plane to multiple dimensions by adding secondary plane fixation capability and optional tertiary plane fixation. This dimensional expansion provides comprehensive three-dimensional stabilization of extended tissue regions, directly addressing the accuracy problem while maintaining manageable system complexity through progressive dimensional addition.
2Volume of moving object
If compression in primary plane is increased to improve tissue thickening, then tissue volume is improved, but fixation stability deteriorates due to insufficient multi-plane constraint
Solution Approach 1:
The fixation constraints are segmented across multiple planes rather than relying on single-plane compression. The primary plane provides initial constraint, while secondary and tertiary planes add complementary constraints, collectively stabilizing the tissue volume without excessive compression in any single plane.
Solution Approach 2:
The fixation system uses a composite approach combining multiple fixation planes with different orientations and constraint characteristics. This composite multi-plane fixation system provides superior overall stability compared to single-plane compression, as each plane contributes unique stabilizing forces that complement each other.
3Adaptability or versatility
If existing single-plane fixation systems are used, then ease of operation is maintained, but adaptability deteriorates when accommodating different tissue shapes and sizes
Solution Approach 1:
The adaptable fixation system is segmented into multiple independent adjustable planes. Each plane can be independently positioned and configured to accommodate different tissue geometries, allowing the system to adapt to various tissue shapes and sizes while maintaining operational simplicity through modular adjustment of each segment.
Solution Approach 2:
The fixation system incorporates dynamic adjustability in multiple planes, allowing the configuration to be changed during operation to match different tissue geometries. This dynamic capability enables the system to adapt to various tissue shapes and sizes without requiring complete repositioning, maintaining ease of operation while enhancing versatility.
Data Source
AI summary
A device for fixing the outer boundaries of a region of body tissue in a secondary plane (and optionally in a tertiary plane) during medical imaging, examination, and/or intervention. The caliper device includes a caliper bar with two sliding caliper arms that provide fixation of the region of tissue in the secondary plane. One embodiment provides tertiary fixation with a center plate fixator that extends from a center plate positioner. The caliper device is positioned around the region of body tissue within the primary plane fixation instrumentation. The caliper arms (and optionally, the center plate fixator) move together to “thicken” the region of tissue between them. The device is preferably constructed of radiotransparent material and for single-use applications.