Surgical Stapling Apparatus with Detachable Buttress Release
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Solution Overview
Problem
Existing endoscopic surgical stapling devices face challenges in effectively sealing and reinforcing thin or fragile tissues, particularly in preventing air or fluid leakage and tissue tears, as they lack efficient mechanisms for securing a buttress material during stapling operations.
Innovation Solution
The surgical stapling apparatus incorporates a detachable surgical buttress secured to the anvil or cartridge assembly using anchors and a release assembly, allowing for the secure placement and automatic release of the buttress material during stapling, ensuring effective reinforcement of the staple line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a detachable surgical buttress is incorporated into the stapling apparatus, then the sealing and reinforcement of staple lines is improved, but the device complexity increases due to additional components such as anchors and release assemblies
Solution Approach 1:
The buttress material is designed as a separate, detachable component from the main stapling apparatus, allowing it to be securely attached during the procedure and easily removed afterward. This segmentation enables the buttress to function independently as a reinforcement element while maintaining integration with the stapler system through standardized attachment mechanisms.
Solution Approach 2:
The buttress material is pre-loaded onto the stapling apparatus before the surgical procedure begins, with attachment mechanisms (such as anchors or clips) positioned and ready for immediate engagement with the tissue. This preliminary preparation ensures that the reinforcement element is in place before stapling occurs, eliminating the need for intraoperative attachment and reducing procedural complexity.
2Ease of operation
If a release assembly is included to automatically release the buttress material, then the ease of operation is improved, but the device complexity increases due to additional mechanical components
Solution Approach 1:
The release assembly is designed to automatically detach the buttress material from the stapling apparatus without requiring manual intervention or additional steps from the surgeon. The mechanism utilizes the natural motion and forces already present during the stapling procedure to trigger the release, making the system self-regulating and eliminating the need for separate release operations.
Solution Approach 2:
The release mechanism incorporates movable components that transition between locked and unlocked states based on the procedural context. As the stapling sequence progresses, mechanical changes in the drive assembly or cartridge position automatically trigger the release, allowing the system to adapt its state dynamically without requiring explicit control inputs from the operator.
3Reliability
If the buttress material is securely attached during stapling, then the reinforcement of the staple line is improved, but the difficulty of detecting and measuring increases due to additional components
Solution Approach 1:
The buttress material and its attachment mechanisms incorporate visual indicators such as color-coded markers, contrasting surfaces, or illuminated elements that make the secured state easily distinguishable during the surgical procedure. These visual cues allow the surgeon to quickly verify proper attachment and identify the location of the reinforcement element without requiring complex detection systems.
Solution Approach 2:
The attachment mechanism serves as an intermediary element between the buttress material and the stapling apparatus, providing a standardized interface that simplifies detection and measurement. The intermediary components (such as clips, anchors, or engagement features) are designed with measurable characteristics and known geometries that facilitate verification of proper installation through straightforward inspection or measurement techniques.
Data Source
Figure 1
Figure 2
Figure 2A
AI summary
A loading unit for use with a surgical stapling apparatus is provided and includes a tool assembly having a cartridge assembly and an anvil assembly that are movable in relation to one another; a surgical buttress releasably secured to a tissue contacting surface of the anvil assembly and/or the cartridge assembly, wherein each surgical buttress is secured to the anvil assembly and/or the cartridge assembly by at least one anchor; a release assembly associated with the anvil assembly and/or the cartridge assembly; and a drive assembly slidably translatable through the tool assembly between proximal and distal positions, wherein the drive assembly actuates the release assembly to thereby release the anchor to free the surgical buttress from the anvil assembly and/or the cartridge assembly.