Knot-tying device and knot-tying system with knot-tying device

US10786241B2 · kind B2 · utility

Assignee

• BEIJING MED-ZENITH MEDICAL SCIENTIFIC CORPORATION LIMITED · CN

Inventors

• Jian Meng · Pittsburgh, US
• Baoqi XIE · Beijing, CN
• Zhiwei Ma · Beijing, CN
• Zhiwu Zhang · Tangxia, CN
• Shengbo Dou · Beijing, CN
• Xiaojun Zhou · Longbeilingcun, CN
• KANG WU · Nanhu, CN
• Danian Ke · Beijing, CN

Key dates

• Filing date: Oct 31, 2016
• Grant date: Sep 29, 2020
• Expiry date: May 10, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2017/0488
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present disclosure discloses a knot-tying device and a knot-tying system with the knot-tying device. The knot-tying device comprises a shear knife provided at a front end of a driving rod. Hilts of the shear knife (18) are opened by an elastic member, and the hilts are pressed by the driving rod to close and cut a suture. The shear knife is used as a substitute for a cutter in the related art, and is driven to close by the driving rod so as to realize a shearing function. When the suture is cut off by the shear knife, a requirement for sharpness of blades are greatly reduced, and the blades are able to be realized by a common processing method, thereby greatly reducing cost while ensuring reliability. In addition, abrasion on the blades from the suture is reduced, thereby greatly prolonging the service life of the product.