Insertable Probe for Lumenal Tissue Biomechanics
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Solution Overview
Problem
Current in vivo biomechanics methods are limited in their ability to simultaneously track the magnitude of load and displacement of lumenal tissues, such as those in the vagina or rectum, and require expensive medical imaging systems, making them impractical for day-to-day diagnostics and treatment.
Innovation Solution
An insertable probe with a pressure chamber and shaft, equipped with systems for inflation, deflation, deformation measurement, and internal pressure measurement, allowing for objective data collection without the need for separate medical imaging systems, using sonomicrometry and EMG sensors to track tissue properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If expensive medical imaging systems are used to measure lumenal tissue properties, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The device segments the measurement function into two independent parts: a pressure chamber for applying controlled load and separate sensors (sonomicrometry crystals and EMG electrodes) for measuring displacement and tissue response. This segmentation allows each component to be optimized independently and simplifies the overall system compared to integrated imaging systems.
Solution Approach 2:
The pressure chamber serves multiple functions: it applies controlled mechanical load to the tissue, acts as a reference frame for displacement measurement, and provides a stable platform for sensor attachment. This multi-functionality reduces the need for separate specialized equipment.
2Measurement precision
If multiple separate systems are used to track load and displacement, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The device merges the load application system (pressure chamber with pump) and displacement measurement system (sonomicrometry crystals and EMG electrodes) into a single integrated probe. This allows simultaneous tracking of both load and displacement magnitudes without requiring coordination between separate systems, reducing operational complexity.
Solution Approach 2:
The pressure chamber acts as an intermediary element that translates pump pressure into controlled mechanical load on the tissue, while simultaneously serving as a stable reference frame for the displacement sensors. This intermediary function enables precise measurement without direct coupling between the pump and tissue.
3Ease of operation
If a simple probe design is used, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The pressure chamber automatically maintains a stable reference frame through its rigid structure, eliminating the need for external stabilization equipment. The sonomicrometry crystals and EMG electrodes self-align with the tissue anatomy, reducing the need for complex positioning procedures.
Solution Approach 2:
The device measures tissue properties by changing the pressure parameter within the chamber, allowing dynamic assessment of tissue mechanical properties. This parameter-based approach provides precise quantitative data while maintaining simple operational procedures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the collection of objective data on lumenal tissue properties, allowing for improved diagnostics and treatment of conditions like pelvic organ prolapse, without the need for expensive imaging systems, and provides insights into load and displacement relationships.
Implementation Method 1
using sonomicrometry and EMG sensors to track tissue properties
Implementation Method 2
a system for measuring the internal pressure of the pressure chamber
Implementation Method 3
using sonomicrometry and EMG sensors to track tissue properties
Data Source
AI summary
A device and method for measuring the structural integrity and structural health of the female pelvic floor, or other lumenal organ, is disclosed. Said device comprises an insertable probe with a pressure chamber capable of distending the walls of said lumenal organ. The invention also comprises means for positioning the pressure chamber and adjusting its location along the lumen. Said device also comprises means for changing and recording the volume and pressure of a balloon which is part of the pressure chamber, and means for determining and recording the location of the walls of the balloon. Said device also comprises a means for integrating information obtained to determine important biomechanical information, such as stress-strain curves, which a medical clinician can use for diagnostic purposes. Said method comprises the insertion of said probe, the expansion and contraction of the pressure chamber under desired condition, and means for analyzing obtained data for increased usefulness to the clinician.