Methods and devices for accessing a body cavity
First Claim
1. A surgical access device, comprising:
- a housing;
a cannula extending distally from the housing, the cannula and the housing defining a working channel extending longitudinally therethrough, the cannula being movable between an insertion configuration and a deployed configuration, and the cannula having a distal anchoring element having a maximum outer diameter in the deployed configuration that is greater than a maximum outer diameter of the cannula in the insertion configuration; and
an obturator insertable through the working channel, the obturator having an engagement feature configured to mate with a complementary engagement feature formed on the cannula such that rotation of the obturator is effective to cause corresponding rotation of the cannula; and
a head formed on a proximal end of the obturator and effective to change a length of the cannula extending between the housing and the anchoring element.
4 Assignments
0 Petitions
Accused Products
Abstract
Methods and devices are provided for accessing a surgical site. In one embodiment, an access device is provided having a housing and a cannula extending distally therefrom. The cannula and the housing can define a working channel extending longitudinally therethrough. The cannula can be movable between an insertion configuration and a deployed configuration. The access device can also include an obturator insertable through the working channel. In one embodiment, the obturator can be configured to selectively mate with the cannula such that rotation of the obturator is effective to cause corresponding rotation of the cannula. In another embodiment, the obturator can be configured to move the cannula from the insertion configuration to the deployed configuration when the obturator is fully disposed within the cannula.
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Citations
19 Claims
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1. A surgical access device, comprising:
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a housing; a cannula extending distally from the housing, the cannula and the housing defining a working channel extending longitudinally therethrough, the cannula being movable between an insertion configuration and a deployed configuration, and the cannula having a distal anchoring element having a maximum outer diameter in the deployed configuration that is greater than a maximum outer diameter of the cannula in the insertion configuration; and an obturator insertable through the working channel, the obturator having an engagement feature configured to mate with a complementary engagement feature formed on the cannula such that rotation of the obturator is effective to cause corresponding rotation of the cannula; and a head formed on a proximal end of the obturator and effective to change a length of the cannula extending between the housing and the anchoring element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surgical access device, comprising:
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a housing; a cannula extending distally from the housing, the cannula and the housing defining a working channel extending therethrough, and the cannula having an expandable anchor formed on a distal portion thereof; an obturator disposable within the working channel; a head formed on a proximal end of the obturator and effective to change a length of the cannula extending between the housing and the anchoring element; and a rotatable actuation mechanism operatively associated with the obturator and effective to expand the expandable anchor on the distal portion of the cannula when the obturator is fully disposed within the cannula such that a distal tip of the obturator extends beyond a distal end of the cannula. - View Dependent Claims (11, 12, 13, 14, 17)
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- 15. The surgical access device of 10, wherein the expandable anchor is configured to expand upon movement of a distal end of the expandable anchor toward a proximal end of the expandable anchor.
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18. A surgical access device, comprising:
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a housing; a cannula extending distally from the housing, the cannula and the housing defining a working channel extending therethrough, and the cannula having an expandable anchor formed on a distal end thereof and movable between an insertion configuration and an expanded deployed configuration; an obturator insertable through the working channel, the obturator being configured to move the expandable anchor between the insertion and deployed configurations, and the obturator being configured to selectively mate with the cannula such that rotation of the obturator is effective to cause corresponding rotation of the cannula; and a head formed on a proximal end of the obturator and effective to change a length of the cannula extending between the housing and the anchoring element. - View Dependent Claims (19)
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Specification