Swing Member Tissue Grasping Device for Uniform Force
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Solution Overview
Problem
Existing tissue holding devices in medical treatments often fail to apply a uniform grasping force, leading to inefficient tissue handling and potential tissue damage during procedures.
Innovation Solution
A treatment device featuring first and second grasping members with a swing member that rotates on a support shaft, allowing for uniform force application between the first and second holding surfaces, ensuring consistent tissue grasping and preventing escape during energy application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional tissue holding device is used, then the structure is simple, but the grasping force is not uniform leading to inefficient tissue handling
Solution Approach 1:
The swing member is designed to rotate dynamically around the support shaft during the grasping process. This dynamic movement allows the first holding surface to maintain uniform contact with the tissue against the second holding surface, ensuring consistent grasping force distribution across the tissue surface while managing the increased structural complexity through purposeful motion.
2Reliability
If a conventional tissue holding device is used, then the device is easy to operate, but tissue escape may occur during energy application
Solution Approach 1:
The swing member is pre-configured with the support shaft positioned closer to its distal end, which preliminarily sets up the geometric relationship between the first and second holding surfaces. This preliminary configuration ensures that when the grasping members close, the tissue is automatically positioned for uniform compression, preventing escape during energy application without requiring complex real-time adjustments by the operator.
3Manufacturing precision
If the support shaft is positioned at the center of the swing member, then the structure is symmetric, but the holding force uniformity is reduced
Solution Approach 1:
The support shaft is deliberately positioned asymmetrically on the swing member, closer to the distal end than the proximal end. This asymmetric positioning creates a specific geometric relationship that ensures the first holding surface contacts the tissue uniformly against the second holding surface, improving holding force distribution while accepting the loss of structural symmetry as a necessary design compromise.
Data Source
AI summary
A treatment device configured to hold a living tissue includes a swing member supported by a first grasping member and rotatable in a first direction and in an opposite direction opposite to the first direction. A support shaft of the swing member is supported on a side close to the distal end including a middle position between the distal end and the proximal end. A first holding surface is provided on the swing member close to a side of the second grasping member and grasps the living tissue. A second holding surface is provided on the second grasping member close to a side of the swing member and which faces the first holding surface and which is configured to hold the living tissue together with the first holding surface of the swing member.