Related Experiment Video
Updated: Jul 1, 2026
11:28
A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
Published on: May 18, 2015
13.0K
Three-Phase Energy Model for Surface Fracture Mechanisms in Cutting Soft Tissues with Snare-Type Tools
Jinghang Wang1, Urara Satake2, Toshiyuki Enomoto1
1Division of Mechanical Engineering, Graduate School of Engineering, The University of Osaka, 2-1, Yamada-oka, Suita, Osaka, 565-0871, Japan.
Annals of Biomedical Engineering
|February 16, 2026
Summary
This study reveals how snare-type tools fracture soft tissue during polypectomy. Optimizing cutting speed and lubrication can improve cut quality and reduce bleeding risks by enhancing fracture toughness.
Area of Science:
- Biomedical Engineering
- Surgical Technology
- Materials Science
Background:
- Snare-type tools are essential for cold snare polypectomy, but their cutting mechanism can lead to suboptimal tissue resection.
- High friction during tissue contact may impede crack propagation, resulting in poor cut quality and increased bleeding risk.
Purpose of the Study:
- To investigate the fundamental mechanism of soft tissue surface fracture during polypectomy.
- To provide data-driven guidance for optimizing snare-type tools and surgical techniques.
Main Methods:
- Development of a three-phase energy model to elucidate soft tissue surface fracture.
- Experimental validation and finite element simulations to analyze energy changes.
- Single-factor experiments to explore tool cutting ability and surface fracture states.
Main Results:
- Cutting fracture toughness and RMS height are effective metrics for evaluating tool performance and fracture state.
- Increased cutting speed enhances fracture toughness and reduces RMS height.
- Surface lubrication effectively reduces RMS height, while wire diameter shows no significant impact.
Conclusions:
- A novel energy-based model clarifies soft tissue cutting fracture mechanisms.
- Findings offer practical guidance for improving snare-type tool design and polypectomy techniques.
Related Concept Videos
01:19Machines
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
A free-body diagram of the...
01:22Machines: Problem Solving I
A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...
01:21Three-Phase Short Circuit—Unloaded Synchronous Machine
Conducting a three-phase short circuit test on an unloaded synchronous machine helps understand its impact on the system. The AC fault current's oscillogram, with the DC offset removed, reveals that the waveform amplitude decreases from an initially high value to a steady-state level for one phase of the machine.
This behavior occurs due to the magnetic flux produced by the short-circuit armature currents. Initially, these currents follow high-reluctance paths but eventually shift to...
This behavior occurs due to the magnetic flux produced by the short-circuit armature currents. Initially, these currents follow high-reluctance paths but eventually shift to...
01:21Power System Three-Phase Short Circuits
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
01:30Simplified Synchronous Machine Model
The Synchronous Machine Model is a fundamental tool in analyzing and ensuring the transient stability of power systems. This model simplifies the representation of a synchronous machine under balanced three-phase positive-sequence conditions, assuming constant excitation and ignoring losses and saturation. The model is pivotal for understanding the behavior of synchronous generators connected to a power grid, particularly during transient events.
In this model, each generator is connected to a...
In this model, each generator is connected to a...
01:24Wind Turbine Machine Models
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...