Triangulation mechanism for a minimally invasive surgical device
View Patent ↗A surgical device including a seal anchor that includes leading and trailing portions. A plurality of ports longitudinally extends between the leading and trailing portions. The ports are adapted and configured to receive surgical objects therein. At least one of the surgical objects is a viewing instrument including a viewing portion. During a surgical procedure, surgical objects inserted in the other ports are selectively positionable with respect to the viewing instrument.
1. A surgical system, comprising:
a seal anchor member for positioning within a tissue tract accessing an underlying body cavity, the seal anchor member defining a first longitudinal axis and including leading and trailing ends, an intermediate section disposed between the leading and trailing ends, and a plurality of ports extending longitudinally between the leading and trailing ends; and
a triangulation device including:
a viewing instrument defining a second longitudinal axis, the viewing instrument including a viewing portion, the viewing instrument received in one of the plurality of ports in a substantially sealed relation, the viewing instrument positioned along the first longitudinal axis;
a surgical instrument received in another one of the plurality of ports in a substantially sealed relation; and
a linkage mechanism operably coupling the surgical instrument and the viewing instrument, wherein rotation of the viewing instrument about the second longitudinal axis transitions the surgical instrument between a first position in which the surgical instrument is substantially parallel to the first longitudinal axis and a second position in which at least a portion of the surgical instrument defines an acute angle with respect to the first longitudinal axis.
2. The surgical system of claim 1 , wherein the linkage mechanism includes an arm member operably coupling the surgical instrument and the viewing instrument.
3. The surgical system of claim 2 , wherein the linkage mechanism further includes a collar threadably coupled with the viewing instrument, whereby rotation of the viewing instrument causes movement of the collar along a length of the viewing instrument.
4. The surgical system of claim 3 , wherein the linkage mechanism further includes a band positioned about the surgical instrument, the band pivotably connected to the arm member.
5. The surgical system of claim 4 , wherein the arm member includes a first arm pivotably connected to the band and a second arm pivotably connected to the collar, the first and second arms pivotably coupled to each other.
6. The surgical system of claim 1 , wherein the surgical instrument includes a weakened region configured to bend upon application of a force thereto.
7. The surgical system of claim 1 , wherein the surgical instrument includes a hinge configured to bend upon application of a force thereto.
8. The surgical instrument of claim 1 , wherein the surgical instrument is formed of a compliant material.