The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2024
Filed:
Dec. 15, 2020
Covidien Lp, Mansfield, MA (US);
Stephen J. Stamm, Wheat Ridge, CO (US);
Purvishkumar H. Soni, Longmont, CO (US);
Benjamin R. Arts, Lafayette, CO (US);
Alyssa M. Sawyer, Broomfield, CO (US);
Jessica E. C. Olson, Frederick, CO (US);
Amir Roomi, Boulder, CO (US);
Scott N. Lacosta, Lafayette, CO (US);
Terry M. Duffin, Westminster, CO (US);
Mark E. Renner, Longmont, CO (US);
John A. Hammerland, III, Arvada, CO (US);
Michelle Esponda, Lafayette, CO (US);
Covidien LP, Mansfield, MA (US);
Abstract
A surgical instrument includes a housing, a shaft extending distally from the housing, an end effector assembly at a distal end portion of the shaft, and a drive assembly. The drive assembly includes a movable handle, a carriage operably coupled to the movable handle, an inner drive operably coupled to the end effector assembly, and a spring assembly operably coupling the carriage and the inner drive. The spring assembly includes inner and outer coil springs arranged in a nested configuration. Initial actuation of the movable handle slides the carriage such that the spring assembly transfers the sliding of the carriage into translation of the inner drive to apply a jaw force by the end effector assembly. Subsequent actuation of the movable handle slides the carriage to compress the spring assembly to substantially maintain a position of the inner drive, thereby controlling the jaw force.