Ultrasonic Tool Pad Composite for Heat Dissipation
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Solution Overview
Problem
Conventional ultrasonic treatment tools face challenges in maintaining effective thermal conductivity and reducing pad deterioration due to frictional heat during tissue treatment, leading to inefficiencies and increased costs.
Innovation Solution
The ultrasonic treatment tool incorporates a pad made of high molecular weight resin with a plating layer, providing improved sticking force and thermal conductivity while maintaining electric insulation, and features a grasper design that allows for efficient heat transfer through an interference structure between the sheath and jaw.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pad is used to grasp tissue during ultrasonic treatment, then tissue grasping capability is improved, but frictional heat causes pad deterioration and reduces thermal conductivity efficiency
Solution Approach 1:
The pad is constructed as a composite material combining a resin base material with a plate-like filler having high thermal conductivity. This composite structure allows the pad to simultaneously achieve good thermal conductivity (reducing energy loss) and resistance to frictional heat deterioration (improving reliability), as the filler particles conduct heat away while the resin matrix provides structural integrity and friction resistance.
Solution Approach 2:
The invention changes the thermal and mechanical parameters of the pad by incorporating fillers with specific thermal conductivity properties and optimizing the filler content ratio. This parameter modification enables the pad to dissipate frictional heat more effectively, reducing both pad deterioration and energy loss during ultrasonic treatment.
2Force
If a coating is applied to the grasper to improve tissue adhesion, then sticking force is improved, but thermal conductivity and electric insulation must be maintained
Solution Approach 1:
The coating is formed as a composite material containing resin and plate-like filler particles. This composite structure provides the necessary sticking force through the resin matrix while the filler particles maintain thermal conductivity. The coating design balances adhesion requirements with thermal and electrical insulation properties without requiring overly complex multi-layer structures.
3Reliability
If high molecular weight resin is used in the pad to reduce deterioration, then pad durability is improved, but manufacturing precision and coating uniformity become more challenging
Solution Approach 1:
The invention specifies particular parameter ranges for the resin (molecular weight, glass transition temperature) and filler particles (size, aspect ratio, thermal conductivity) to optimize both durability and manufacturability. By controlling these parameters within defined ranges, the coating process achieves uniform application while the resulting composite structure provides resistance to frictional heat deterioration.
Solution Approach 2:
The plate-like filler particles are distributed throughout the resin matrix to create localized regions of high thermal conductivity. This local quality enhancement allows the pad to dissipate heat at critical points where friction occurs, improving durability without requiring the entire coating structure to be uniformly complex.
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 configuration enhances the tool's ability to transmit frictional heat efficiently, reduces pad deterioration, and maintains effective tissue treatment performance while minimizing costs.
Implementation Method 1
a blade including a treatment portion at a distal side of the blade, the blade configured to transmit an ultrasonic vibration from a proximal side of the blade to the treatment portion
Implementation Method 2
maintaining effective thermal conductivity and reducing pad deterioration due to frictional heat during tissue treatment
Data Source
AI summary
An ultrasonic treatment tool comprises: a blade including a treatment portion at a distal side of the blade, the blade configured to transmit an ultrasonic vibration from a proximal side of the blade to the treatment portion and the treatment portion configured to treat a body tissue, a grasper movable relative to the treatment portion between an open position and a closed position to grasp the body tissue between the grasper and the treatment portion, a coating provided on the grasper, the coating is formed by a first resin, when the grasper is in the closed position, the coating contacts the treatment portion.