Surgical Stapler Visual Indicator for Anvil Positioning
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Solution Overview
Problem
Existing surgical stapling devices face challenges in accurately identifying the position of the anvil head within the firing zone due to the small size of the staples and limited visualization, making it difficult for clinicians to ensure proper staple formation across varying tissue thicknesses.
Innovation Solution
A visual indicator mechanism with an indicator cover and movable indicator plate, featuring spaced slots and colored bands, provides sequential visualization of the anvil head's approximation to the staple cartridge, allowing clinicians to better control the degree of approximation and accommodate different tissue thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional visual indicator mechanism is used, then the device structure remains simple, but the clinician cannot accurately identify the anvil head position within the firing zone
Solution Approach 1:
The indicator mechanism is segmented into multiple components: an indicator member with multiple colored bands (first, second, third bands), an indicator cover with multiple slots (first, second, third slots), and an indicator plate. Each colored band corresponds to a specific position within the firing zone, allowing the clinician to identify the anvil head position with high precision by observing which colored band aligns with the window.
Solution Approach 2:
The indicator member incorporates multiple colored bands (first colored band, second colored band, third colored band) that provide distinct visual cues. As the indicator plate moves the indicator member to different positions, different colored bands become visible through the slots in the indicator cover, enabling accurate position identification within the firing zone.
2Manufacturing precision
If the firing zone size is small to ensure proper staple formation, then staple quality improves, but visualization of the anvil head position becomes difficult
Solution Approach 1:
The indicator mechanism serves as an intermediary between the anvil head position and the clinician's observation. The indicator member with colored bands translates the physical position of the anvil head into distinct visual signals that can be easily detected through the indicator cover slots, solving the visualization difficulty caused by the small firing zone size.
Solution Approach 2:
Different colored bands on the indicator member correspond to different positions within the small firing zone. This color-coding system allows the clinician to clearly distinguish between various positions (first position, second position, third position) even though the physical space is limited, thereby maintaining both precise staple formation and easy position detection.
3Adaptability or versatility
If the clinician has limited visualization of the anvil head position, then the device structure remains simple, but the ability to control approximation for different tissue thicknesses deteriorates
Solution Approach 1:
The indicator mechanism is divided into discrete segments: multiple colored bands (first, second, third), multiple slots (first, second, third) in the indicator cover, and a movable indicator plate. This segmentation allows the clinician to select the appropriate visual cue (specific colored band visible through specific slot) based on the tissue thickness being treated, providing adaptability without excessive complexity.
Solution Approach 2:
The indicator mechanism provides real-time visual feedback to the clinician about the anvil head position relative to the staple cartridge. As the approximation mechanism moves the anvil head, the indicator plate moves accordingly, and the visible colored band changes, giving the clinician feedback to adjust the approximation degree for different tissue thicknesses.
Data Source
AI summary
A surgical stapling device includes a visual indicator mechanism that provides a clinician with greater visualization of the movement of an anvil assembly in relation to a cartridge assembly after the anvil and cartridge assemblies have been approximated to within a firing zone. The visual indicator mechanism improves visualization of the different degrees of approximation within the firing zone by providing an indicator cover having spaced slots that allow indicia formed on an indicator member to sequentially appear within the spaced slots to identify the different degrees of approximation within the firing zone.