A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/34 (2006.01) A61B 19/00 (2006.01)
Patent
CA 2051500
A safety trocar is provided in which the cutting tip is withdrawn into the cannula in response to counterforce being removed from the cutting tip, e.g., by the tip entering a body cavity.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tip is maintained in the exposed positioned by a mechanism associated with the obturator shaft, and is automatically withdrawn into the cannula under the force of a spring when the first mechanism is released by a second mechanism associated with the obturator.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 dont la pointe se retire dans la canule lorsque cesse la résistance à la pénétration, c'est-à-dire lorsque la pointe a pénétré dans une cavité du corps. La pointe est maintenue en dehors de la canule par un mécanisme associé à la tige de l'obturateur, et elle est automatiquement rappelée dans la canule par l'action d'un ressort lorsque ledit mécanisme est relâché par un deuxième mécanisme associé à l'obturateur. Ce dispositif réduit la force de pénétration à la plus faible valeur possible et assure un emploi efficace et sûr du trocart.
Mcfadden Fincham
United States Surgical Corporation
LandOfFree
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