Surgical stapling device with curved tool assembly

US11826044B2 · kind B2 · utility

Assignee

• Covidien LP · US

Inventors

• Jiangfeng Zhang · Beijing, CN
• Xini Zhang · Shanghai, CN
• Syed Sarfraz Ahamed · Bengaluru, IN
• Shunhong Xu · Minhang District, CN
• Ping Ren · Shanghai, CN
• Manojit Hazra · Hyderabad, IN
• Sridharan Varadhan · Hyderabad, IN
• Zhinan Guo · Shanghai, CN

Key dates

• Filing date: Aug 2, 2019
• Grant date: Nov 28, 2023
• Expiry date: Aug 2, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/0814
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A surgical stapling device includes a tool assembly having a U-shaped frame, an anvil assembly, and a cartridge assembly. The U-shaped frame has a proximal transverse portion, a longitudinal portion, and a distal transverse portion. The distal transverse portion and the proximal transverse of the U-shaped frame and the cartridge assembly have a common shape including a first linear portion defining a first axis, a second linear portion defining a second axis, and a third linear portion defining a third axis, the first axis being transverse to the longitudinal axis of the elongate body. In embodiments, a first radius of curvature is defined between the first linear portion and the second linear portion such that the first axis and the second axis define an angle β, and a second radius of curvature is defined between the second linear portion and the third linear portion such that the second axis and the third axis define an angle Ω.