Grasping Jaw Segmentation for Tissue Stability
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Solution Overview
Problem
Existing grasping treatment devices face challenges in effectively grasping and treating living tissues, particularly blood vessels and membranous tissues, due to movement and dispersion of force issues during cutting and coagulation procedures.
Innovation Solution
The device incorporates a jaw configuration with abutting and separated portions, distal-side and proximal-side wall portions, and a planar-shaped abutting surface to concentrate grasping force and prevent tissue movement, combined with ultrasonic vibrations for treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a planar-shaped abutting surface is used to concentrate grasping force, then the grasping force concentration is improved, but the device complexity increases due to the specific jaw configuration with abutting and separated portions
Solution Approach 1:
The jaw is segmented into distinct functional portions: an abutting portion with a planar-shaped abutting surface for force concentration, and separated portions that are disposed with clearances from the probe treatment portion. This segmentation allows each portion to perform its specific function - the abutting portion concentrates grasping force while the separated portions avoid tissue interference, thereby resolving the contradiction between force concentration and device complexity.
2Stability of the object's composition
If wall portions protrude toward the probe treatment portion to regulate tissue movement, then the tissue movement control is improved, but the device complexity increases
Solution Approach 1:
The jaw incorporates wall portions (distal-side and proximal-side wall portions) that protrude toward the probe treatment portion at specific locations. These wall portions are strategically positioned to regulate tissue movement in the distal and proximal directions respectively. By applying structural features only where needed rather than uniformly across the entire jaw, the design achieves effective tissue movement control while minimizing overall device complexity.
3Stability of the object's composition
If the separated portion is disposed with clearance from the probe treatment portion, then the tissue movement prevention is improved, but the grasping force distribution is worsened
Solution Approach 1:
The jaw is divided into an abutting portion that contacts the probe treatment portion and separated portions that maintain clearances. This segmentation strategy concentrates grasping force at the abutting portion where it is most needed for stable tissue engagement, while the separated portions with clearances prevent tissue movement without interfering with the force application zone. The result is optimized force distribution that enhances tissue stability.
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 ensures efficient sealing and treatment of tissues by concentrating force on the abutting portion and preventing tissue movement, enhancing the grasping and coagulation process.
Implementation Method 1
The grasping treatment device uses energy such as ultrasonic vibrations or a high-frequency current to conduct (perform) a treatment
Implementation Method 2
heaters are respectively attached to the probe treatment portion and the jaw. The heater of the probe treatment portion and the heater of the jaw are formed into a planar shape having a surface that is not uneven. Heat generated by the heaters is used in cutting and coagulation of the grasping target
Data Source
AI summary
A jaw of the grasping treatment device includes an abutting portion being abutable on a probe treatment portion when the jaw is closed relative to the probe treatment portion, and a separated portion being disposed with a clearance between the separated portion and the probe treatment portion when the abutting portion is in abutment with the probe treatment portion. The jaw includes a distal-side wall portion provided to a distal direction side of the separated portion and protruding toward the probe treatment portion as compared with the separated portion, and a proximal-side wall portion provided to a proximal direction side of the separated portion and which protruding toward the probe treatment portion as compared with the separated portion.