Expandable surgical access port
First Claim
Patent Images
1. A surgical access assembly for positioning within an opening in tissue, the surgical access assembly comprising:
- an outer frame positionable outside a patient and defining an opening therein dimensioned to receive a surgical instrument therethrough, the outer frame including a first portion, a second portion, and a locking portion, wherein the second portion includes a first engagement structure and a second engagement structure spaced from the first engagement structure, and the first portion includes a third engagement structure and a forth engagement structure, the first engagement structure engageable with the third engagement structure and the second engagement structure engageable with the fourth engagement structure, a region of the second portion overlying a region of the first portion and underlying a region of the locking portion, the locking portion being movable relative to the first and second portions to lock the first and second portions in relation to each other in a plurality of select spread positions, the locking portion being relatively movable with respect to the second portion from a first position wherein the first and second engagement structures are out of engagement with the third and fourth engagement structures to a second position wherein the first and second engagement structures are in engagement with the third and fourth engagement structures, the locking portion having a camming surface to cam the first and second engagement structures into the second position;
an inner member positionable within the patient; and
a flexible member extending between the inner member and the outer frame, and being spreadable by actuation of the outer frame, the flexible member being maintained in a select spread position when the first and second portions of the outer frame are locked in relation to each other by the locking portion.
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Abstract
A surgical access assembly for positioning within an opening in tissue including an outer frame positionable outside a patient and defining an opening therein dimensioned to receive a surgical instrument therethrough. The outer frame includes a first portion, a second portion and a locking portion. An inner member is positionable within a patient and a flexible member extends between the inner member and outer frame and is spreadable by actuation of the outer frame.
190 Citations
9 Claims
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1. A surgical access assembly for positioning within an opening in tissue, the surgical access assembly comprising:
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an outer frame positionable outside a patient and defining an opening therein dimensioned to receive a surgical instrument therethrough, the outer frame including a first portion, a second portion, and a locking portion, wherein the second portion includes a first engagement structure and a second engagement structure spaced from the first engagement structure, and the first portion includes a third engagement structure and a forth engagement structure, the first engagement structure engageable with the third engagement structure and the second engagement structure engageable with the fourth engagement structure, a region of the second portion overlying a region of the first portion and underlying a region of the locking portion, the locking portion being movable relative to the first and second portions to lock the first and second portions in relation to each other in a plurality of select spread positions, the locking portion being relatively movable with respect to the second portion from a first position wherein the first and second engagement structures are out of engagement with the third and fourth engagement structures to a second position wherein the first and second engagement structures are in engagement with the third and fourth engagement structures, the locking portion having a camming surface to cam the first and second engagement structures into the second position; an inner member positionable within the patient; and a flexible member extending between the inner member and the outer frame, and being spreadable by actuation of the outer frame, the flexible member being maintained in a select spread position when the first and second portions of the outer frame are locked in relation to each other by the locking portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification