Surgical Staple Recesses for Tissue Gap Control
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Solution Overview
Problem
Existing surgical staplers lack effective control during staple deployment, leading to potential tissue damage and inconsistent tissue gaps.
Innovation Solution
The surgical staple is designed with a pair of staple legs and a backspan formed by bending a wire, featuring at least one recess to influence the folding direction of the staple legs, ensuring each leg pierces tissue only once and forms a consistent tissue gap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional surgical staples are used without recesses, then the staple structure is simple, but the tissue gap consistency and control during deployment are poor
Solution Approach 1:
The patent applies local quality by introducing recesses at specific locations on the staple legs and backspan. These recesses are not uniformly distributed but strategically positioned to control folding behavior in specific regions, thereby achieving consistent tissue gaps without requiring complete redesign of the entire staple structure.
Solution Approach 2:
The recesses are pre-formed during staple manufacturing to predetermined depths and positions. This preliminary action ensures that during surgical deployment, the staples will fold in the desired manner to create consistent tissue gaps, eliminating the need for real-time adjustment during the surgical procedure.
2Reliability
If staples are designed to pierce tissue multiple times, then the staple can accommodate tissue movement, but the risk of tissue damage increases
Solution Approach 1:
The staple is segmented into distinct functional regions: staple legs for piercing and clamping, backspan for forming the seal, and recesses for controlling folding. This segmentation allows the piercing function to be isolated to the initial penetration phase, while the sealing function is achieved through controlled folding, preventing repeated piercing and reducing tissue damage.
Solution Approach 2:
The staple transitions from a rigid linear configuration to a dynamic folded configuration after deployment. The recesses enable controlled dynamic movement of the staple legs relative to the backspan, allowing the staple to adapt to tissue thickness variations through folding rather than repeated piercing, thereby maintaining reliability while minimizing harm.
Data Source
AI summary
A surgical staple, stapler, and related methods are disclosed. A surgical staple has a pair of staple legs and a backspan positioned between the pair of staple legs, the backspan and the pair of staple legs formed by bending a wire. At least one recess is positioned in the wire to influence a folding direction of at least one staple leg during tissue stapling. The surgical staple is configured to pierce tissue only once with each staple leg during the tissue stapling.