| 摘要 |
<p>A surgical portal apparatus includes a portal, a seal, a plurality of restricting members, and a lockout assembly. The portal defines a longitudinal axis and has a longitudinal opening. The seal is disposed in mechanical cooperation with the portal and defines a passage for reception of a surgical object. The plurality of restricting members are arranged about the longitudinal axis to define a passage therethrough and positioned to contact the surgical object. The restricting members have contacting segments adapted for radial movement relative to the longitudinal axis from a rest position to a displaced position. The lockout assembly includes a locking member disposed distal of the restricting members. The locking member is positioned to intersect the longitudinal opening and engage the surgical object. The locking member is operatively coupled with the restricting members to minimize offset manipulation of the surgical object.</p> |
