Surgical Stretcher with Sliding Window and Anti-Twist Lock
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Solution Overview
Problem
Existing surgical devices for prolapse treatments, such as hemorrhoid pathologies, are cumbersome and difficult to use due to unwieldy designs that cause displacement and twisting during insertion and rotation, leading to operator discomfort and increased risk of complications.
Innovation Solution
A device with a hollow, tapered stretcher body and a variable extension window, stabilized by blocking and anti-twist mechanisms, which maintains the mobile wall in place during insertion and prevents torsional deformation, allowing for easier and more stable access to the prolapse area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile wall is added to widen the intervention area, then the operational versatility is improved, but the device complexity increases
Solution Approach 1:
The device is divided into functional segments: a cylindrical body for structural support, a mobile wall for area adjustment, and a grip for operation. This segmentation allows each component to perform its specific function independently, enabling area adjustment without proportionally increasing overall complexity.
Solution Approach 2:
The mobile wall is designed to be movable relative to the cylindrical body, allowing dynamic adjustment of the intervention area. This dynamic structure enables the device to adapt to different surgical needs while maintaining a relatively simple base structure when not in use.
2Reliability
If the device is made more stable during insertion, then the reliability is improved, but the ease of operation deteriorates due to counter-pressure requirements
Solution Approach 1:
The mobile wall is pre-configured in a retracted position that prevents twisting and displacement during insertion. This preliminary positioning counteracts the destabilizing forces of insertion before they can cause problems, eliminating the need for operator counter-pressure while maintaining reliability.
3Adaptability or versatility
If the cylindrical body is rotated during operation, then the positioning flexibility is improved, but the device stability deteriorates due to twisting
Solution Approach 1:
The mobile wall is pre-positioned to prevent twisting during rotation operations. This preliminary configuration counteracts the torsional forces that would otherwise compromise device integrity, allowing rotation for positioning flexibility while maintaining structural stability.
Data Source
Figure 1~2
Figure 3a~3b
Figure 4
AI summary
A device for surgical operations on a prolapse, comprising a hollow stretcher body (2) having a prevalent development direction along a longitudinal axis (A) and being insertable in an orifice, the stretcher body (2) exhibiting a through-window (7), defining an area of intervention and realising a communication between an internal cavity (3) of the stretcher body (2) and a portion of a prolapse, a mobile wall (8) defining the through-window (7) in combination with the stretcher body (2) and being slidably associated to the stretcher body (2) in order to open and/or close the through-window (7) between a configuration of minimum extension and a configuration of maximum extension of the through-window (7); characterised in that it comprises means for blocking (10) which act between the mobile wall (8) and the stretcher body (2) in order to maintain the through- window (7) stably in the configuration of minimum extension during insertion of the stretcher body (2).