Safety trocar

Details Safety trocar Safety trocar

A - Human Necessities

61

B

A61B 17/34 (2006.01)

Patent

CA 2051499

A safety trocar is provided in which the cutting tip is withdrawn into the cannula in response to counterforce being removed from the cutting tip, e.g., by the tip entering a body cavity. The cutting tip is maintained in the exposed positioned by a mechanism associated with the obturator shaft, and is automatically withdrawn into the cannula under the force of a spring when the first mechanism is released by a second mechanism associated with the obturator. Penetration force is maintained at a minimum and safe and efficacious trocar entry is facilitated.

Trocart de sécurité dans lequel l'extrémité coupante est retirée dans la canule en réaction à la contreforce retirée de l'extrémité coupante, p. ex., par le bout qui entre dans la cavité du corps. L'extrémité de coupe est maintenue en position apparente par un mécanisme associé à l'axe de l'obturateur et est automatiquement retirée dans la canule sous l'action de la force d'un ressort lorsque le premier mécanisme est relâché par un deuxième mécanisme associé à l'obturateur. La force de pénétration est maintenue à un minimum, ce qui rend l'introduction du trocart sûre et efficace.

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