Patent ID: 7967794

Claim:
A method of covering a cannula fixed to a cannula holding member, the method comprising: pivoting a sheath that is pivotally mounted on the cannula holding member, the cannula being fixed to the cannula holding member so that a beveled distal end of the cannula projects beyond a distal end of the cannula holding member, the cannula holding member comprising at least one outwardly directed and longitudinally extending fin; the sheath comprising an interior bounded by a back wall, a pair of oppositely positioned side walls and an opening positioned opposite the back wall, the opening extending along at least a portion of a longitudinal extent of the sheath; the sheath also comprising at least one cantilevered fin engaging member connected to the back wall and extending from the back wall of the sheath in the interior in a direction toward the opening, the at least one fin engaging member being spaced from both side walls of the sheath and possessing a distal end portion; the sheath being pivoted toward the cannula to cause the beveled distal end of the cannula to be positioned in the interior of the sheath and to cause a distal end portion of the at least one cantilevered fin engaging member to engage the at least one fin on the cannula holding member to lock the sheath in a cannula covering position relative to the cannula holding member and prevent the sheath from being pivoted away from the cannula.