Patent ID: 11871922
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. An endoscopic stitching device, comprising:
an elongate shaft assembly including:
first and second blade drive members; and
a tool assembly including:
first and second jaws; and
first and second blades slidably disposed in the respective first and second jaws, the first and second blades operatively coupled with the first and second blade drive members, respectively; and

a handle assembly including:
a main rod configured for axial displacement; and
a drive conversion assembly operatively coupled with the first and second blade drive members, the drive conversion assembly including:
a cam wheel including first, second, and third pins; and
a pawl operatively coupled to the main rod, the pawl configured to engage the first pin to cause rotation of the cam wheel in a first direction which, in turn, causes reciprocating displacement of the first and second blade drive members, and the second pin to cause rotation of the cam wheel in a second direction, which, in turn, causes reciprocating displacement of the first and second blade drive members in opposite directions, the pawl configured to engage the third pin to cause the pawl to extend transversely outward of the main rod away from the third pin, wherein axial displacement of the main rod pivots the first and second jaws between open and closed positions and causes reciprocating axial displacement of the first and second blades.