Surgical laparoscopic ports for implanting medical systems

A trocar assembly comprising:

• an obturator assembly comprising:
• an obturator housing;
• an obturator tip;
• and
• an obturator body extending from a distal end of the obturator housing to the obturator tip, the obturator body extending from the obturator housing to the obturator tip;
• and
• a cannula assembly comprising:
• a cannula housing;
• and
• a cannula sleeve comprising a sleeve body extending from a distal end of the cannula housing,
• wherein the sleeve body comprises:
• a first side face connecting a first set of rounded corners;
• a second side face opposing the first side face, the second side face connecting a second set of rounded corners, wherein the first set of rounded corners and the second set of rounded corners each comprise an upper rounded corner and a lower rounded corner;
• a top apex extending from the upper rounded corners of the first set of rounded corners and the second set of rounded corners, wherein the top apex is rounded in shape;
• and
• a bottom apex extending from the lower rounded corners of the first set of rounded corners and the second set of rounded corners, wherein the bottom apex is rounded in shape;
• wherein the first side face and the second side face are parallel.

A method to deliver a neuromodulation system to a site of a target biological structure, the method comprising:

• inserting an obturator assembly within a cannula assembly, and advancing the obturator assembly to where an obturator housing of the obturator assembly is approximated with a cannula housing of the cannula assembly such that an obturator tip of the obturator assembly protrudes from a distal end of the cannula assembly;
• applying the obturator tip against tissue such that an arcuate leading surface of the obturator assembly engages the tissue;
• advancing the obturator assembly and the cannula assembly through the tissue until a portion of the obturator assembly passes through the tissue into a cavity;
• removing the obturator assembly from the cannula assembly;
• feeding the neuromodulation system through the cannula assembly to deliver the neuromodulation system to the cavity;
• inserting one or more surgical instruments into the cannula assembly;
• and
• manipulating the one or more surgical instruments to attach a lead assembly of the neuromodulation system to the target biological structure,
• wherein the cannula assembly comprises a cannula sleeve configured to accommodate insertion of the one or more surgical instruments through the cannula assembly, the cannula sleeve comprising a first cross-sectional shape comprising:
• a first side face connecting a first set of rounded corners;
• a second side face opposing the first side face, the second side face connecting a second set of rounded corners, wherein the first set of rounded corners and the second set of rounded corners each comprise an upper rounded corner and a lower rounded corner;
• a top apex extending from the upper rounded corners of the first set of rounded corners and the second set of rounded corners, wherein the top apex is rounded in shape;
• and
• a bottom apex extending from the lower rounded corners of the first set of rounded corners and the second set of rounded corners, wherein the bottom apex is rounded in shape;
• wherein the first side face and the second side face are parallel.