Back to results
US 10,765,443 B2Granted
Needlescopic scissor end effector and methods of use
AssigneeTeleflex Medical Incorporated
InventorsSundaram Ravikumar, Guy Osborne
Life of this patent
Estimating the term…
Abstract
A needlescopic scissors end effector assembly includes a pair of jaws or blades pivotable to perform a cutting or shearing operation. The scissors end effector assembly includes a cannula having a diameter between about 1 mm to 5 mm and a needle tip configured for percutaneous operation. The pair of jaws or blades includes cam profile surfaces to interact with an opening defined with the needle tip to actuate opening and closing of the pair of jaws or blades and to prevent backlash effect during the opening and closing of the pair of jaws or blades.
Claims20
A scissors end effector assembly comprising:
- a top shear;
- a bottom shear;
- a cam tube extending in a longitudinal direction, the cam tube having a proximal end and a distal end;
- a clevis attached to the distal end of the cam tube, the clevis including an upper arm and a lower arm;
- and
- a cam bushing defining an upper slot having a periphery surrounding and slidably receiving the upper arm, and a lower slot having a periphery surrounding and slidably receiving the lower arm,
- wherein the top shear and the bottom shear are pivotally mounted between the upper arm and the lower arm such that the top shear and the bottom shear open and close via force or bias from the cam bushing.
4 more elements
Dependencies are inferred from the claim text.