Staple Cartridge Pusher With Circumferential Support for Taller Staples
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Solution Overview
Problem
Conventional surgical clamping and cutting instruments are limited by the size and shape of staple cartridges, which restrict the ability to use taller staples for improved tissue sealing and hemostasis, and lack maneuverability due to constraints on overall instrument size and staple pusher design.
Innovation Solution
A staple pusher design with a recessed pocket and circumferential support for the staple backspan allows taller staples to be used, enhancing sealing performance while maintaining compactness and maneuverability, with a critical ratio of pusher height to pocket depth ensuring structural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional staple cartridge design is used, then instrument size is reduced, but staple height is limited and tissue sealing performance deteriorates
Solution Approach 1:
The staple pusher incorporates a recessed pocket that extends vertically into the pusher body, creating additional depth in the vertical dimension. This allows the staple backspan to be positioned lower, enabling taller staples to be used without increasing the overall cartridge footprint or instrument size.
Solution Approach 2:
The staple backspan is nested within the recessed pocket of the staple pusher, with the pocket providing internal containment for the backspan portion. This nesting arrangement allows the staple structure to be efficiently packaged within the constrained cartridge volume while maintaining adequate staple height.
2Stability of the object's composition
If conventional staple pusher design is used, then manufacturing is simplified, but staple support and structural stability are insufficient
Solution Approach 1:
The recessed pocket is strategically positioned and dimensioned to provide localized support specifically for the staple backspan region. The pocket depth and circumferential walls are optimized to engage and support the backspan where needed, while the rest of the pusher structure maintains its original simple geometry for ease of manufacture.
Data Source
AI summary
The present disclosure provides a staple cartridge for a surgical instrument having a staple and a staple pusher. The staple pusher has a recess forming a pocket in its top surface for receiving at least the backspan of the staple. The pocket is at least partially surrounded by a circumferential 5 supporting element in the staple pusher body to support the backspan. The pocket provides additional vertical space and support for the staple such that a smaller staple cartridge may provide a substantially similar performance as conventional staple cartridges, allowing for a more compact and maneuverable surgical instrument. In addition, the pocket in the staple pusher allows for a staple having a larger bend radius than conventional staples, thereby providing additional support 10 for the staple and minimizing malformation of the staple during use.