×

Expanding trocar assembly

  • US 5,707,359 A
  • Filed: 11/14/1995
  • Issued: 01/13/1998
  • Est. Priority Date: 11/14/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. An expandable trocar assembly, comprising:

  • a trocar hilt secured to an inner sheath, the inner sheath including an expandable distal end, the distal end being formed of a plurality of ribs which assume a funnel shape when unrestrained;

    an outer sheath slidably positioned on the inner sheath for movement on the inner sheath while the trocar hilt is secured to the inner sheath, the outer sheath being movable to selectively cover and restrain the expandable distal end of the inner sheath during insertion, the trocar hilt including a main body containing a flapper valve positioned at a proximal end of the main body and resiliently biased to a closed position, and wherein the flapper valve includes a cylindrical support located at the proximal end of the main body and a flapper pivotally supported by the cylindrical support within the main body, and wherein movement of the cylindrical support causes the flapper to move to an opened position.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×