Shield lockout for bladed obturator and trocars
First Claim
Patent Images
1. An obturator comprising:
- a handle;
a switch positioned in the handle, the switch movable between a locked position and an unlocked position, the switch comprising;
a post positioned on the handle;
a user accessible tab rotatably positioned on the post and rotatable from a first position to a second position, the tab having a flat interface positioned thereon;
a leaf spring coupled to the tab and biasing the tab to the first position;
a first arm rotatably positioned on the post and movable by the flat interface of the tab with movement of the tab from the first position to the second position; and
a second arm rotatably positioned on the post and rotatable with the first arm; and
a shaft connected to the handle and having a longitudinal axis, the shaft having a movable portion and a fixed portion with a blade connected to the fixed portion of the shaft, the movable portion fixed in a distal position to define a blade shield with the switch in the locked position and selectively movable from the distal position to a proximal position exposing the blade with the switch in the unlocked position.
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Accused Products
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.
81 Citations
20 Claims
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1. An obturator comprising:
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a handle; a switch positioned in the handle, the switch movable between a locked position and an unlocked position, the switch comprising; a post positioned on the handle; a user accessible tab rotatably positioned on the post and rotatable from a first position to a second position, the tab having a flat interface positioned thereon; a leaf spring coupled to the tab and biasing the tab to the first position; a first arm rotatably positioned on the post and movable by the flat interface of the tab with movement of the tab from the first position to the second position; and a second arm rotatably positioned on the post and rotatable with the first arm; and a shaft connected to the handle and having a longitudinal axis, the shaft having a movable portion and a fixed portion with a blade connected to the fixed portion of the shaft, the movable portion fixed in a distal position to define a blade shield with the switch in the locked position and selectively movable from the distal position to a proximal position exposing the blade with the switch in the unlocked position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An obturator comprising:
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a handle; a switch positioned in the handle, the switch movable between a locked position and an unlocked position, the switch comprising; a post positioned on the handle; a user accessible tab rotatably positioned on the post and rotatable from a first position to a second position to move the switch from the locked position to the unlocked position, wherein the tab is biased to the first position with the switch in the unlocked position; a leaf spring biasing the tab to the first position; and a locking mechanism inaccessibly positioned within the handle; and a shaft connected to the handle and having a longitudinal axis, the shaft having a movable portion and a fixed portion with a blade connected to the fixed portion of the shaft and the movable portion fixed in a distal position to define a blade shield with the switch in the locked position and selectively movable from the distal position to a proximal position exposing the blade with the switch in the unlocked position; wherein movement of the movable portion of the shaft from the distal position to the proximal position actuates the locking mechanism to return the switch from the unlocked position to the locked position. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An obturator comprising:
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a handle; a switch positioned in the handle, the switch movable between a locked position and an unlocked position, the switch comprising; a post positioned on the handle; a user accessible tab rotatably positioned on the post and rotatable from a first position to a second position to move the switch from the locked position to the unlocked position; and a locking mechanism inaccessibly positioned within the handle, the locking mechanism comprising a locking arm rotatably positioned on the post and a ramp having a low profile end, a high profile end, and a back wall, wherein the locking arm is movable along the ramp from the low profile end past the high profile end to the back wall as the tab is rotated from the first position to the second position to move the switch from the locked position to the unlocked position; and a shaft connected to the handle and having a longitudinal axis, the shaft having a movable portion and a fixed portion with a blade connected to the fixed portion of the shaft and the movable portion fixed in a distal position to define a blade shield with the switch in the locked position and selectively movable from the distal position to a proximal position exposing the blade with the switch in the unlocked position; wherein movement of the movable portion of the shaft from the distal position to the proximal position actuates the locking mechanism to return the switch from the unlocked position to the locked position. - View Dependent Claims (19)
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20. An obturator comprising:
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a handle; a switch positioned in the handle, the switch movable between a locked position and an unlocked position, the switch comprising; a post positioned on the handle; a user accessible tab rotatably positioned on the post and rotatable from a first position to a second position to move the switch from the locked position to the unlocked position; a locking mechanism inaccessibly positioned within the handle; and a wall contacting the tab with the tab in the first position and exposed with the tab in the second position, wherein the wall is positioned between the tab and the locking mechanism; and a shaft connected to the handle and having a longitudinal axis, the shaft having a movable portion and a fixed portion with a blade connected to the fixed portion of the shaft and the movable portion fixed in a distal position to define a blade shield with the switch in the locked position and selectively movable from the distal position to a proximal position exposing the blade with the switch in the unlocked position; wherein movement of the movable portion of the shaft from the distal position to the proximal position actuates the locking mechanism to return the switch from the unlocked position to the locked position.
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Specification