Distal plastic end infusion/aspiration tip

摘要

Embodiments described herein provide ophthalmic surgical instruments. One embodiment provides an instrument including an infusion sleeve, aspiration tube, and infusion/aspiration tip. The sleeve can include a body defining an infusion channel. The tube can be in the infusion channel and define an aspiration channel. The tip can conform to the distal end of the tube. The tip can seal a gap between the sleeve and tube and can include a flange with a profile (e.g., a tapered portion) corresponding to the profile of the sleeve. The sleeve and tip can be keyed such that the sleeve directs fluid in one direction and the tip draws fluid perpendicularly from that direction. The tip's aspiration channel can extend distally beyond its aspiration port. The tip can extend to a point adjacent to an infusion port of the sleeve. A disposable component (including an aspiration tube and infusion/aspiration tip) for use with instruments is provided.

主权项

1. An ophthalmic surgical instrument comprising:
an infusion sleeve comprising an elongated body defining an infusion channel and having a proximal end, a distal end, and a longitudinal axis along the length of the elongated body; an aspiration tube defining an aspiration channel, having a proximal end and a distal end, and being positioned in the infusion channel; and an infusion/aspiration tip formed of plastic coupled to and conforming to the distal end of the aspiration tube, wherein the infusion/aspiration tip is overmolded onto the aspiration tube, wherein the infusion/aspiration tip further comprises a proximal end and a flange formed along an outer surface of the infusion/aspiration tip, wherein the proximal end of the infusion/aspiration tip is accepted into the infusion channel at a distal end of the infusion sleeve, and wherein the distal end of the infusion sleeve abuts the flange of the infusion/aspiration tip.