A surgical access device comprising: (a) a cannula assembly (12, 112) including: (i) a cannula (20, 120), (ii) a cannula head (60, 160) coupled with a proximal end of the cannula, and (iii) a working channel (14, 114) at least partially defined by the cannula and the cannula head extending longitudinally along a central axis of the cannula assembly, wherein the working channel is configured to receive a surgical instrument therethrough to access to a surgical site within a body cavity of a patient, wherein the canula head comprises a seal assembly (30, 130) defining a slot (35, 138) located adjacent to the working channel; and (b) an obturator, wherein the obturator is configured to removably couple with the cannula assembly along the central axis to facilitate insertion of the surgical access device through a body wall of the patient, wherein the obturator comprises: (i) an elongated shaft extending along a longitudinal axis, wherein the elongated shaft is dimensioned to fit within the working channel of the cannula assembly, (ii) a tapered distal tip located at a distal portion of the elongated shaft, and (iii) an obturator head located at a proximal portion of the elongated shaft, wherein the obturator head comprises an interference fit feature (270, 370, 470) configured to inhibit proximal movement between the obturator and the cannula assembly via a frictional force against a surface of the cannula assembly, wherein the interference fit feature comprises a downwardly extending pin coupled to the base plate, wherein the downwardly extending pin is configured to engage a portion of the seal assembly defining the slot to generate at least a portion of the friction force, wherein the downwardly extending pin comprises a spring clip formed from a resilient material. (a) a cannula assembly (12, 112) including: (i) a cannula (20, 120), (ii) a cannula head (60, 160) coupled with a proximal end of the cannula, and (iii) a working channel (14, 114) at least partially defined by the cannula and the cannula head extending longitudinally along a central axis of the cannula assembly, wherein the working channel is configured to receive a surgical instrument therethrough to access to a surgical site within a body cavity of a patient, wherein the canula head comprises a seal assembly (30, 130) defining a slot (35, 138) located adjacent to the working channel; and (i) a cannula (20, 120), (ii) a cannula head (60, 160) coupled with a proximal end of the cannula, and (iii) a working channel (14, 114) at least partially defined by the cannula and the cannula head extending longitudinally along a central axis of the cannula assembly, wherein the working channel is configured to receive a surgical instrument therethrough to access to a surgical site within a body cavity of a patient, wherein the canula head comprises a seal assembly (30, 130) defining a slot (35, 138) located adjacent to the working channel; and (b) an obturator, wherein the obturator is configured to removably couple with the cannula assembly along the central axis to facilitate insertion of the surgical access device through a body wall of the patient, wherein the obturator comprises: (i) an elongated shaft extending along a longitudinal axis, wherein the elongated shaft is dimensioned to fit within the working channel of the cannula assembly, (ii) a tapered distal tip located at a distal portion of the elongated shaft, and (iii) an obturator head located at a proximal portion of the elongated shaft, wherein the obturator head comprises an interference fit feature (270, 370, 470) configured to inhibit proximal movement between the obturator and the cannula assembly via a frictional force against a surface of the cannula assembly, wherein the interference fit feature comprises a downwardly extending pin coupled to the base plate, wherein the downwardly extending pin is configured to engage a portion of the seal assembly defining the slot to generate at least a portion of the friction force, wherein the downwardly extending pin comprises a spring clip formed from a resilient material. (i) an elongated shaft extending along a longitudinal axis, wherein the elongated shaft is dimensioned to fit within the working channel of the cannula assembly, (ii) a tapered distal tip located at a distal portion of the elongated shaft, and (iii) an obturator head located at a proximal portion of the elongated shaft, wherein the obturator head comprises an interference fit feature (270, 370, 470) configured to inhibit proximal movement between the obturator and the cannula assembly via a frictional force against a surface of the cannula assembly, wherein the interference fit feature comprises a downwardly extending pin coupled to the base plate, wherein the downwardly extending pin is configured to engage a portion of the seal assembly defining the slot to generate at least a portion of the friction force, wherein the downwardly extending pin comprises a spring clip formed from a resilient material.