Kidney-Shaped Surgical Staple Forming via Oblique Ridge Pocket
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surgical staplers face challenges in efficiently stapling tissues of varying thickness due to the need for staples with legs of different heights, leading to increased complexity, cost, and difficulty in meeting surgical requirements, as well as issues with tissue damage and healing.
Innovation Solution
The development of a surgical staple and staple pocket system that forms a kidney-shaped staple, featuring a back span and legs with an M-shaped configuration, where the staple pocket has a side surface, bottom surface, and oblique ridge, allowing staples of the same height to be used for varying tissue thicknesses, and multiple pockets are staggered to enhance sealing and healing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If U-shaped staples with legs of different heights are used to accommodate varying tissue thicknesses, then the surgical requirements for different tissue thicknesses can be met, but the device complexity increases and the cost increases
Solution Approach 1:
The patent changes the geometric parameters of the staple pocket by introducing an oblique ridge that divides the bottom surface into two parts with different depths. This allows the same staple (with uniform leg height) to form a kidney-shaped configuration that adapts to varying tissue thicknesses, eliminating the need for multiple staple specifications and reducing device complexity
Solution Approach 2:
The staple pocket is segmented into two distinct regions by the oblique ridge: a first bottom surface portion and a second bottom surface portion at different depths. This segmentation enables differential bending of the staple legs to form the kidney shape, allowing adaptation to varying tissue thicknesses while using a single staple design
2Object-affected harmful factors
If U-shaped staples bend to form B-shaped staples with small rings, then sealing and bleeding-stopping are facilitated, but healing of surrounding tissues becomes slower
Solution Approach 1:
The patent creates an asymmetric kidney-shaped staple configuration where the two legs bend to different extents along the staple guide lines. This asymmetry forms a kidney shape with one larger ring and one smaller ring, allowing the larger ring to facilitate tissue healing while the smaller ring maintains effective sealing and bleeding-stopping at the tissue edge
3Device complexity
If staples with legs of the same height are used, then device complexity is reduced, but the surgical requirements for tissues varying in thickness cannot be met
Solution Approach 1:
The oblique ridge acts as an intermediary element in the staple pocket that mediates the bending process of the staple legs. By providing a ridge line that intersects with the staple guide lines at specific angles, it guides the formation of the kidney shape from a simple U-shaped staple, enabling adaptation to varying tissue thicknesses without changing the staple itself
Data Source
AI summary
The present invention disclosed a surgical staple (50) and staple pocket (57) for forming kidney-shaped staple therefor, with the staple pocket (57) being recessed inward on the tissue contacting surface of the staple anvil (58), and with M-shaped staple (50) being used, wherein the degree of projection of the middle portion of the back span (51) of the M-shaped staple (50) arranged at the inner circle or arranged at a proximal side of a cutter slot (121) is larger than that of the back span (51) of the M-shaped staple (50) arranged at the outer circle or arranged at a distal side of the cutter slot (121), so that when the staple (50) of the same height are adapted to staple tissues to be stapled of different thickness, staple driver (68) bends the M-shaped staple (50) on the staple pocket (57) to form kidney-shaped staple (50) so as to achieve the operational effect of being able to seal the stapled tissue, to stop bleeding and to heal the tissue therearound.