Tissue Thickness Compensator for Surgical Stapler
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Solution Overview
Problem
Current surgical stapling instruments face challenges in effectively handling varying tissue thicknesses, leading to inconsistent staple formation and potential tissue damage during stapling and severing procedures.
Innovation Solution
The development of a surgical stapling instrument featuring a tissue thickness compensator, which includes a compressible layer attached to the staple cartridge, compensates for different tissue thicknesses by applying uniform pressure and ensuring consistent staple formation across varying tissue types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional surgical stapling instrument is used, then the stapling operation can be performed, but inconsistent staple formation and tissue damage occur due to varying tissue thicknesses
Solution Approach 1:
The patent introduces a tissue thickness compensator that changes the physical parameters of the stapling system by providing variable compression force based on tissue thickness. The compressible foam material allows the anvil to move closer to the staple cartridge for thicker tissues, maintaining consistent staple formation across varying tissue depths.
Solution Approach 2:
The tissue thickness compensator acts as an intermediary element between the anvil and the tissue being stapled. This mediator absorbs the variability in tissue thickness and transmits uniform compression force to the tissue, preventing direct transmission of inconsistent forces that would cause poor staple formation and tissue damage.
2Manufacturing precision
If uniform pressure is applied during stapling, then consistent staple formation is achieved, but the instrument cannot accommodate varying tissue thicknesses
Solution Approach 1:
The patent employs a dynamic system where the anvil is not fixed in position but can move relative to the staple cartridge through the tissue thickness compensator. This dynamic adjustment allows the system to adapt to different tissue thicknesses while maintaining consistent compression force and staple formation throughout the stapling process.
Solution Approach 2:
The compressible foam material of the tissue thickness compensator changes its compression characteristics based on the applied load and tissue thickness. Softer foam materials are used for thinner tissues while harder materials accommodate thicker tissues, allowing the system to maintain optimal compression parameters across varying tissue depths.
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 tissue thickness compensator ensures consistent staple formation and reduced tissue damage by accommodating different tissue thicknesses, enhancing the precision and effectiveness of stapling and severing operations.
Implementation Method 1
a compressible layer attached to the staple cartridge, compensates for different tissue thicknesses by applying uniform pressure
Data Source
AI summary
An anvil-attachable layer for use with a surgical stapler, or fastening instrument, wherein a proximal end portion of the layer is attached to a staple cartridge assembly, for example. The layer may be attached to the staple cartridge assembly by an adhesive, weld, or a staple-cartridge-based clamp, wherein the attachment is weak enough to allow the layer to pull away from the staple cartridge assembly with stapled tissue. Alternatively, the layer can include two or more lateral slits that define a connector region that can be cut by a knife of a surgical stapler to release the layer.