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US 8,801,741 B2Granted
Flat blade shielded obturator
AssigneeApplied Medical Resources Corporation
InventorsRussell E. Ahlberg, Martin Ponisio, Luca Pesce
Life of this patent
Estimating the term…
Abstract
A shielded bladed obturator is provided with a shield lockout that prevents retraction of a shield to expose a blade for cutting. The shield lockout in one aspect has a rotational switch interacting with a longitudinal extending shield to lock and unlock the shield. A blade exposure and coverage system is also provided.
Claims18
An obturator comprising:
- a handle, the handle having a rotatable switch arranged to rotate about a rotational axis from a first position to a second position and a biasing spring positioned within the handle and coupled to the rotatable switch;
- and
- a shaft connected to the handle and having a longitudinal axis parallel with the rotational axis, the shaft having a movable portion, a fixed portion with a blade connected to the fixed portion of the shaft, and a compression spring surrounding a portion of the movable portion and biasing the movable portion longitudinally distally relative to the fixed portion;
- the rotatable switch in the first position obstructing the movable portion of the shaft to prevent entry of the movable portion of the shaft into the handle and movement of the movable portion of the shaft along the longitudinal axis and in the second position freeing the movable portion of the shaft to allow entry of the movable portion of the shaft into the handle and movement of the movable portion of the shaft along the longitudinal axis.
1 more element
An obturator comprising:
- a handle having a cover with an opening and a manually engagable switch arranged to rotate about a rotational axis from a first position to a second position, the switch having a lever protruding through the opening in the first position, the lever manually pivotable with respect to the cover to rotate the switch to the second position, and the switch recessed within the cover in the second position;
- and
- a shaft connected to the handle and having a longitudinal axis parallel with the rotational axis, the shaft having a movable portion and a fixed portion with a blade connected to the fixed portion of the shaft;
- the switch preventing movement of the movable portion of the shaft along the longitudinal axis in the first position and allowing movement of the movable portion of the shaft in the second position.
1 more element
Dependencies are inferred from the claim text.