Patent ID: 9603739
Date: 2017-03-28
CPC Classifications: A61F,A61M

Claim:
1. A needle assembly, comprising: a needle hub comprising a tubular body and comprising an input port on its proximal end configured for direct removable connection to a luer port on a distal end of a syringe, the syringe comprising a syringe body forming a drug reservoir, the needle hub further comprising a distal stop surface; a needle comprising a proximal portion and a distal portion, the proximal portion of the needle housed within the tubular body of the needle hub, and a distal end of the needle extending distally beyond the needle hub; a slidable shield operatively coupled to the needle hub, the slidable shield configured for axial movement along the needle hub between the input port and the distal stop surface and configured such that the needle is completely circumscribed by the shield when the shield is in a first, distal position with respect to the needle hub, and the distal portion of the needle extends distally beyond the shield when the shield is in a second, proximal position with respect to the needle hub; an atraumatic ocular contact surface configured to be atraumatic to the conjunctiva or corneal surfaces, the ocular contact surface comprising a perimeter and coupled to a distal end of the slidable shield; and a first resistance component comprising a clip removably attached to the tubular body of the needle hub and positioned between a distal end of the input port and the proximal end of the slidable shield, the clip abutting a radially extending annular wall of the distal end of the input port, the clip comprising a tab to facilitate removal of the clip, the first resistance component configured to reversibly prevent axial movement of the slidable shield and to maintain the slidable shield in the first, distal position with respect to the needle hub.