Trocar with profile to reduce insertion force

Details Trocar with profile to reduce insertion force Trocar with profile to reduce insertion force

A - Human Necessities

61

B

A61B 17/34 (2006.01)

Patent

CA 2117912

2117912 9417845 PCTABS00033 A trocar having a blade with a shaft (26) and a body (14). The body of the blade has a shoulder (36) creating a stepped relationship between the body and the shoulder of the blade. The thickness of the step is substantially the same thickness as the wall thickness (t) of the cannula (12) that fits over the blade. The inside diameter of substantially the entire length of the cannula is substantially the same as the outside diameter of the body of the blade. The distal end of the cannula has a number of slits (40) creating finger-like segments (42) that are formed of a material that is biased radially inwardly. The slits allow the fingers to collapse around the shoulder of the blade and the ends of the fingers have a shape substantially designed to conform to the outer shape of the body of the blade.

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