Ultrasonic Probe Vibration Stability via Segmented Center of Gravity
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Solution Overview
Problem
Existing ultrasonic probes face challenges in stabilizing longitudinal vibration transmission due to imbalance caused by the center of gravity displacement in treatment sections, leading to vibration instability and potential adverse effects on treatment efficacy.
Innovation Solution
The ultrasonic probe design includes a first area with a center axis coinciding with the center of gravity, a treatment section with a displaced center of gravity, and a second area with a center of gravity parallel to the first area's center axis, ensuring stable longitudinal vibration transmission by adjusting the center of gravity positioning to align with the treatment section's center of gravity or be closer, thus minimizing vibration loss and maintaining stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the treatment section is designed with a hook shape to treat biological tissue, then the treatment functionality is improved, but the center of gravity becomes displaced from the center axis, causing vibration instability
Solution Approach 1:
The probe is divided into three distinct areas: a first area with the ultrasonic transducer, a second area that is continuous with the first area and has a reduced outer diameter, and a treatment section at the distal end. This segmentation allows the treatment section to have a displaced center of gravity for functional purposes while the second area's reduced diameter compensates for the imbalance, maintaining overall vibration stability.
Solution Approach 2:
The outer diameter of the probe is changed along its length, with the second area having a smaller outer diameter than the first area. This parameter change in the radial dimension compensates for the longitudinal displacement of the center of gravity caused by the hook-shaped treatment section, thereby stabilizing the ultrasonic vibration despite the asymmetric treatment section design.
2Productivity
If the center of gravity is positioned at the distal end to improve treatment section functionality, then the treatment efficacy is improved, but the longitudinal vibration transmission becomes unstable
Solution Approach 1:
By segmenting the probe into three areas with different outer diameters, the design allows the treatment section to have its center of gravity at the distal end for effective tissue treatment, while the reduced-diameter second area acts as a counterbalancing element that stabilizes the overall vibration transmission along the longitudinal axis.
Solution Approach 2:
The outer diameter parameter is varied along the probe length, with the second area having a smaller diameter than the first area. This parameter change creates a compensatory effect that maintains vibration transmission stability despite the center of gravity being positioned at the distal end for optimal treatment efficacy.
3Adaptability or versatility
If the treatment section center of gravity is displaced from the center axis to optimize treatment section shape, then the treatment section design flexibility is improved, but the overall probe balance deteriorates
Solution Approach 1:
The probe is segmented into three areas, with the second area serving as a transition zone that has a reduced outer diameter. This segmentation allows the treatment section to have design flexibility with its displaced center of gravity while the second area's reduced diameter compensates for the imbalance, maintaining overall probe balance without increasing complexity.
Solution Approach 2:
By changing the outer diameter parameter in the second area to be smaller than in the first area, the design achieves probe balance compensation. This parameter change allows the treatment section to have flexible design with displaced center of gravity while maintaining overall balance through the reduced-diameter section.
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
This design stabilizes longitudinal vibration transmission, allowing for effective treatment without adverse effects on the vibration state, even when the center of gravity is displaced at the antinode position, ensuring efficient and stable ultrasonic treatment.
Implementation Method 1
configured to transmit ultrasonic vibration along a longitudinal axis defined by a proximal end and a distal end thereof from the proximal end toward the distal end
Implementation Method 2
transmit longitudinal vibration parallel to a longitudinal axis as a result of transmittance of ultrasonic vibration
Data Source
AI summary
An ultrasonic probe transmits vibration along longitudinal axis from the proximal toward the distal end, including: first area including proximal and distal end portions, a center axis parallel to the longitudinal axis, the first area having a vibration antinode position at the distal end, wherein maximum distance from the center axis to an outer peripheral surface in radial direction orthogonal to the center axis is a first distance; a treatment section located on a distal end side's barycenter position displaced from the center axis; a second area located between the first area and treatment section continuous with the distal end of the first area and gravity center axis parallel to the center axis to pass through the barycenter, wherein maximum distance from the center axis to the outer surface in the radial direction orthogonal to the center axis is a second distance equal to or shorter than the first distance.