Expanding seal anchor for single incision surgery
The present disclosure relates to a surgical anchoring apparatus for use during a minimally invasive surgical procedure. The surgical anchoring apparatus includes a body member and a dilator element at least partially positionable therein. The body member includes a grip segment adapted for manual engagement by a user and an expandable section having a plurality of expandable segments and a plurality of cam surfaces. The grip segment resiliently transitions between a first or normal state and a second state in which the grip segment is at least partially inverted. The expandable section's cam surfaces are configured to engage a distal end of the dilator element upon its insertion such that the expandable section may transition from an initial condition to an expanded condition in which the body member is secured or anchored within an incision in tissue.
1. A surgical apparatus, comprising:
a body dimensioned for at least partial insertion through tissue and defining a longitudinal body passage, the body including:
a grip segment having an outer surface, the grip segment being adapted to transition between a first state where the outer surface is distally directed and a second state where the outer surface is proximally directed; and
an elongate segment extending from the grip segment, the elongate segment adapted to transition between a first condition defining a first internal dimension and a second condition defining a second internal dimension different than the first internal dimension; and
a dilator at least partially positionable within the longitudinal body passage of the body, and being dimensioned to cause the elongate segment to transition to the second condition.
2. The surgical apparatus according to claim 1 wherein the dilator defines a longitudinal dilator passage for passage of an object.
3. The surgical apparatus according to claim 2 wherein the dilator includes a seal.
4. The surgical apparatus according to claim 1 wherein the elongate segment includes at least one expandable member, the at least one expandable member adapted to be displaced radially outwardly relative to a longitudinal axis of the elongate segment during insertion of the dilator within the longitudinal body passage of the body.
5. The surgical apparatus according to claim 4 wherein the at least one expandable member includes at least one internal cam surface, the at least one internal cam surface configured to cooperate with the dilator to displace the at least one expandable member radially outwardly during insertion of the dilator within the longitudinal body passage of the body.
6. The surgical apparatus according to claim 1 wherein the grip segment includes a peripheral flange.
7. The surgical apparatus according to claim 6 wherein the peripheral flange is dimensioned and adapted to establish a seal with tissue upon transition of the grip segment to the second state.
8. The surgical apparatus according to claim 1 wherein at least a portion of the outer surface has a distal curvature when the grip segment is in the first state and has a proximal curvature when the grip segment is in the second state.
9. A surgical method, comprising:
providing the surgical apparatus of claim 1 ;
positioning the grip segment in the second state;
grasping the grip segment and advancing the body within tissue to provide access to an underlying surgical site;
transitioning the grip segment from the second state to the first state; and
engaging at least a peripheral segment of the outer surface of the grip segment when in the first state thereof with tissue.
10. The method according to claim 9 further including expanding the elongate segment from the first condition defining the first internal dimension to the second condition defining the second internal dimension different than the first internal dimension.
11. The method according to claim 10 wherein expanding the elongate segment includes introducing the dilator at least partially into the elongate segment of the body.
12. The method according to claim 11 further including performing a surgical procedure by introducing a surgical object through a dilator passage of the dilator.
13. The method according to claim 9 wherein engaging the at least a peripheral segment of the outer surface of the grip segment includes establishing a seal with the peripheral segment of the outer surface of the grip segment with the tissue.
14. The method according to claim 9 wherein positioning the grip segment includes arranging the grip segment such that at least a portion of the outer surface curves proximally and wherein transitioning the grip segment from the second state to the first state includes arranging the grip segment such that the at least a portion of the outer surface curves distally.
15. The method according to claim 9 further including performing a surgical procedure through the longitudinal body passage of the body.
16. The method according to claim 15 wherein performing the surgical procedure includes introducing a surgical object through the longitudinal body passage of the body.