Rotary Blade Guide Mechanism for Tissue Cutting
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Solution Overview
Problem
Existing treatment devices for cutting living tissue face inefficiencies in moving the cutting edge, requiring longer distances and more complex operations, which can lead to increased risk of tissue movement and cutting failures during the procedure.
Innovation Solution
A treatment device with first and second holding portions and a rotary member that includes a blade capable of cutting, where the blade is guided through guide portions between the holding surfaces, reducing the moving distance required for cutting and simplifying the cutting operation by using a dial to rotate the rotary member and move the blade between the guide portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cutter moves along the axial direction to cut the held living tissue, then the cutting function is achieved, but the moving distance is long and the operation is complex
Solution Approach 1:
The cutter is changed from a linearly moving axial cutter to a rotary cutter that rotates around a central axis. This dimensional change from linear motion to rotational motion allows the cutting edge to traverse the tissue more efficiently, reducing the moving distance while achieving the same cutting function.
Solution Approach 2:
The cutter is designed to rotate dynamically around a central axis rather than moving statically along the axial direction. This dynamic rotational movement allows the cutting edge to continuously engage with the tissue, simplifying the operation and reducing the overall moving distance required to complete the cut.
2Reliability
If the cutter moves a long distance to cut the tissue, then the cutting function is achieved, but the risk of tissue movement and cutting failures increases
Solution Approach 1:
By changing the cutter's motion from linear axial movement to rotational movement around a central axis, the cutting edge can engage the tissue more quickly and maintain engagement more effectively. This reduces the total moving distance and minimizes the time during which tissue movement could cause cutting failures.
Solution Approach 2:
The rotary cutter provides continuous cutting action as it rotates, with the cutting edge continuously engaging the tissue throughout the rotation. This continuous action reduces the risk of tissue movement causing gaps or failures in the cutting process, compared to discrete linear movements.
3Loss of time
If a rotary member with edge portion is used to cut the tissue, then the moving distance is reduced, but the device structure becomes more complex
Solution Approach 1:
The rotary member serves multiple functions: it provides the cutting edge, defines the cutting path through its rotation, and can be integrated with the holding portions to secure the tissue. This multi-functionality reduces the need for separate components, thereby reducing overall device complexity despite the rotary mechanism.
Solution Approach 2:
The rotary member is integrated with the holding portions and guide portions in a unified structure. The first and second holding portions work together with the rotary member and guide portions to create a cohesive cutting system, reducing the number of separate components and simplifying the overall device structure.
4Manufacturing precision
If guide portions are added to guide the edge portion, then the cutting precision is improved, but the device complexity increases
Solution Approach 1:
The guide portions act as intermediaries between the rotary member and the holding portions, providing a simple guiding surface that directs the cutting edge along the desired path. These guide portions are relatively simple structural elements that provide precision without adding significant complexity to the overall device.
Solution Approach 2:
The guiding function is segmented into separate guide portions that are integrated with the holding portions. This segmentation allows each guide portion to be optimized for its specific guiding function while maintaining a relatively simple overall structure, as each guide portion is a discrete, manageable component.
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
The device effectively reduces the moving distance of the blade, enhances operational ease, and minimizes tissue movement during cutting, thereby improving the efficiency and reliability of the cutting process.
Implementation Method 1
a rotary member including a working portion including an edge portion capable of cutting the living tissue by being rotated around a central axis
Data Source
AI summary
A treatment device to treat a living tissue, includes: first and second holding portions; a rotary member including a working portion including an edge portion which is rotated around a central axis equal to or substantially parallel with the longitudinal axis, the rotary member capable of moving the edge portion from the first holding portion to the second holding portion; a first guide portion provided in the first holding portion and capable of guiding the edge portion toward the second holding portion through the holding surface of the first holding portion; and a second guide portion provided in the second holding portion, and capable of guiding the edge portion to the second holding portion through the holding surface of the first holding portion.