Safety trocar
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United States of America Patent
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Jan 30, 2007
Issued Date -
N/A
app pub date -
Dec 23, 2002
filing date -
Apr 30, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A safety trocar is provided in which the cannula is reciprocally mounted to the cannula housing and reciprocates into the cannula housing when a proximally directed force is applied thereto. The piercing tip is maintained in the exposed position by a latching mechanism associated with the obturator shaft, and is automatically withdrawn into the cannula under the force of a spring when the proximal force is removed from the cannula, the cannula thus advancing distally and releasing the latching mechanism. Penetration force is maintained at a minimum, and safe and efficacious trocar entry is facilitated.
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