DEVICE FOR GRASPING AN ELONGATED BODY, SUCH AS A NEEDLE, AND ROBOTIZED DEVICE COMPRISING THE SAME

摘要

A device for selectively grasping a part of a separate elongated body extending through the device, includes at least three partially mobile jaw members defining between them a through hole of variable diameter depending on their mutual relative positioning, supporting and driving elements to which the jaw members are mounted and which are adapted to provide a coordinated motion to the members around the elongated body situated in the variable through hole, resulting in a closing or opening of the through hole. The jaw members have an elongated shape with two opposed ends and the supporting and driving elements include a circular or annular support body to which a first end of each jaw member is connected and a mobile annular driving body to which a second opposed end of each jaw member is connected.

主权项

1. Device for selectively gripping or grasping a segment or part of a separate elongated body (2) extending through said device, this device (1) comprising at least three, at least partially mobile jaw or clamping members (3) defining between them a through hole or similar receiving passage (4) of variable diameter depending on their mutual relative positioning, said device (1) comprising also supporting and driving means (5, 6) to which said jaw members or clamping members (3) are mounted and/or connected and which are adapted to provide a coordinated motion to said members (3) around the elongated body (2) situated in the variable through hole (4), resulting in a closing or opening of said through hole (4) device (1), characterized in that the jaw or clamping members (3) have an elongated shape with two opposed ends (3′, 3″) and the supporting and driving means (5, 6) mainly comprise a circular or annular support body (5) to which a first end (3′) of each jaw or clamping member (3) is connected and a mobile circular or annular driving body (6) to which a second opposed end (3″) of each jaw or clamping member (3) is connected, a rotational movement of the driving body (6) relative to the support body (5) resulting in a simultaneous and synchronous displacement of all the connected second ends (3″) of the jaws or clamping members (3) and a corresponding variation of the size of the through hole or passage.