Tissue Thickness Compensator with Visualization Indicators
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Solution Overview
Problem
Surgical stapling instruments face challenges in consistently forming staples across varying tissue thicknesses, leading to potential malformation and inadequate hemostasis, especially when dealing with tissues of different thicknesses or when staples are improperly formed.
Innovation Solution
The implementation of a compressible tissue thickness compensator integrated into the surgical stapling instrument, which adjusts to accommodate different tissue thicknesses by compressing and deforming to ensure proper staple formation and hemostasis, utilizing a cartridge body with layers of varying compressibility and a bioabsorbable material that remains in the patient to reinforce the staple line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a standard stapling instrument is used, then the device structure remains simple, but staple formation becomes inconsistent across varying tissue thicknesses
Solution Approach 1:
The tissue thickness compensator changes its physical parameters (compressibility, density, or material properties) to adapt to different tissue thicknesses. This allows the stapling instrument to maintain consistent staple formation across varying tissue depths without requiring multiple different devices, thereby resolving the contradiction between manufacturing precision and device complexity.
Solution Approach 2:
The compensator is designed to be dynamic rather than static - it can compress, deform, or adjust its configuration in response to the tissue thickness being stapled. This dynamic adaptation enables consistent staple formation while keeping the overall device structure relatively simple, as the same compensator can handle multiple tissue thicknesses through its adjustable nature.
2Illumination intensity
If the tissue thickness compensator has low visibility, then the material properties remain simple, but the surgeon cannot locate or verify the compensator position
Solution Approach 1:
The compensator incorporates visual indicators such as color-coded markers, dyes, or contrasting materials that make it easily visible to the surgeon during the procedure. This allows the compensator to maintain its functional material properties while adding visual characteristics that improve detectability without significantly complicating the overall device structure.
Solution Approach 2:
The compensator may include intermediary visual elements or markers that are distinct from the functional tissue-interacting portion. These visual intermediaries (such as colored coatings, reflective surfaces, or contrasting layers) serve as mediators between the compensator's internal structure and the surgeon's visual detection, improving visibility without fundamentally changing the compensator's core material properties.
3Adaptability or versatility
If the compensator is highly compressible to accommodate thick tissue, then the adaptability improves, but the structural integrity may be compromised
Solution Approach 1:
The compensator is constructed from composite materials that combine different properties within a single structure. For example, it may have an outer layer that is highly compressible for accommodating thick tissue, while incorporating an internal framework or reinforcement that maintains structural integrity. This composite approach allows the compensator to be both highly adaptable to varying tissue thicknesses and sufficiently strong to maintain its form and function during stapling.
Solution Approach 2:
The compensator may be segmented into multiple zones or layers with different mechanical properties. The portion that contacts and compresses the tissue can be highly compressible, while other portions maintain greater structural rigidity. This segmentation allows different regions of the compensator to fulfill different functions - one region providing adaptability while another maintains structural integrity, thereby resolving the contradiction between compressibility and strength.
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 solution ensures consistent staple formation across diverse tissue thicknesses, minimizing malformation and enhancing hemostasis by maintaining the staple line integrity within the patient, thereby improving surgical precision and patient recovery.
Implementation Method 1
the material is capable of absorbing water or other fluids from the patient's body and expanding
Implementation Method 2
which adjusts to accommodate different tissue thicknesses by compressing and deforming
Data Source
AI summary
A staple cartridge assembly for use with a surgical stapler. The assembly has a cartridge body having a support portion with a plurality of staple cavities with openings. There is also a plurality of staples, wherein at least a portion of each the staple is removably stored within a the staple cavity. Each the staple is movable between an unfired position and a fired position, and is deformable between an unfired configuration and a fired configuration. The assembly also includes a compressible tissue thickness compensator configured to be captured within the staples. The compressible tissue thickness compensator at least partially covers the staple cavity openings. The compressed tissue thickness compensator is configured to assume different compressed heights within different the staples. The compressible tissue thickness compensator includes a visualization indicator.