Tissue Thickness Compensator for Consistent Staple Formation
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Solution Overview
Problem
Surgical stapling instruments face challenges in consistently forming staples across varying tissue thicknesses, leading to inconsistent staple formation and potential tissue damage.
Innovation Solution
The development of a surgical stapling instrument featuring a tissue thickness compensator, which includes a compressible layer within the staple cartridge that adjusts to different tissue thicknesses, ensuring consistent staple formation and minimizing tissue damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed anvil surface is used for staple formation, then the device structure is simple, but staple formation becomes inconsistent when tissue thickness varies
Solution Approach 1:
The anvil surface is made dynamically adjustable through a mechanism that allows the anvil to move relative to the staple cartridge. This dynamic adjustment enables the anvil surface to adapt to different tissue thicknesses, ensuring consistent staple formation across varying conditions without requiring a completely complex redesigned structure.
Solution Approach 2:
The invention changes the positional parameter of the anvil surface relative to the staple cartridge by introducing an adjustable mechanism. This parameter change allows the system to accommodate different tissue thicknesses while maintaining consistent staple formation, resolving the contradiction between precision and complexity.
2Reliability
If the anvil surface is adjusted to accommodate varying tissue thicknesses, then staple formation consistency is improved, but the device complexity increases
Solution Approach 1:
The adjustable anvil mechanism introduces dynamic adaptability to the stapling process, allowing real-time adjustment based on tissue thickness. This dynamic feature improves reliability by ensuring consistent staple formation across different tissue conditions while maintaining a relatively streamlined mechanism.
Solution Approach 2:
The adjustable anvil mechanism serves multiple functions: it accommodates varying tissue thicknesses, ensures consistent staple formation, and maintains structural integrity. This multi-functionality improves reliability without proportionally increasing device complexity.
3Adaptability or versatility
If a rigid staple cartridge is used, then the cartridge structure is simple, but it cannot adapt to different tissue thicknesses leading to inconsistent stapling
Solution Approach 1:
The staple cartridge is designed with dynamic characteristics, allowing it to flex or adjust its position relative to the anvil based on tissue thickness. This dynamic adaptability enables the cartridge to work effectively with varying tissue conditions while maintaining a relatively simple overall structure.
Solution Approach 2:
The cartridge incorporates flexible elements that allow it to adapt to different tissue thicknesses. These flexible components enable the cartridge to maintain proper alignment with the anvil surface across varying conditions without requiring a complex adjustable mechanism.
4Object-affected harmful factors
If the anvil and staple cartridge are fixed relative to each other, then the device structure is simple, but tissue damage occurs due to inconsistent staple formation
Solution Approach 1:
The relative adjustment mechanism between the anvil and staple cartridge is made dynamic, allowing automatic or manual adjustment to accommodate different tissue thicknesses. This prevents inconsistent staple formation and associated tissue damage while maintaining a relatively simple mechanism.
Solution Approach 2:
An intermediary adjustment mechanism is introduced between the anvil and staple cartridge to mediate their relative positioning. This intermediary component enables fine-tuning of the gap between them, preventing tissue damage from inconsistent staple formation without requiring a completely complex redesign.
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 across varying tissue thicknesses, reducing the risk of tissue damage and improving the reliability of the stapling process.
Implementation Method 1
a compressible layer within the staple cartridge that adjusts to different tissue thicknesses
Data Source
AI summary
In various embodiments, an end effector comprising a first jaw, a second jaw, an implantable arrangement, first cavities, and second cavities is disclosed. At least one of the first and second jaws is movable to compress tissue between the first jaw and second jaws. The implantable arrangement comprises a first layer and a second layer. The first layer and the second layer comprise a polymeric composition. The first cavities are defined in the first layer and interconnectedly form a permeable first layer. The first cavities releasably retain a first therapeutic agent configured to induce a first biological response in the tissue. The second cavities are defined in the second layer and interconnectedly form a permeable second layer. The second cavities releasably retain a second therapeutic agent configured to induce a second biological response in the tissue. The first therapeutic agent and the second therapeutic agent are different.