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Expandable surgical access port

  • US 8,961,408 B2
  • Filed: 11/16/2011
  • Issued: 02/24/2015
  • Est. Priority Date: 08/12/2010
  • Status: Expired due to Fees
First Claim
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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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