ASPIRATION DEVICE WITH VACUUM LIMITER

摘要

Systems, devices, and methods include a hand-held instrument with an aspiration conduit extending therethrough and with an aspiration needle arranged to aspirate fluid from a surgical site. A vacuum limiter is associated with the aspiration conduit. The vacuum limiter includes an opening formed in a wall of the aspiration conduit, an actuator disposed in the opening, and a biasing element biasing the actuator to a closed position that prevents passage of fluid through the opening. The biasing element is arranged to permit the actuator to displace from the closed position to a relief position so that fluid passes through the opening when a threshold vacuum is reached within the lumen. The actuator can further displace to an override position that prevents passage of fluid through the opening.

主权项

1. An ophthalmic surgical system, comprising:
a handle comprising:
a proximal end;a distal end; andan aspiration conduit defining an aspiration passageway; an aspiration needle extending from the distal end of the handle, the aspiration needle comprising:
a lumen in fluid communication with the aspiration passageway; andan opening formed at a distal end of the needle, the opening arranged to aspirate fluid from a surgical site; and a vacuum limiter associated with the aspiration conduit, the vacuum limiter comprising:
an opening formed in a wall of the aspiration conduit and in fluid communication with the aspiration passageway;an actuator disposed in the opening; anda biasing element biasing the actuator to a closed position that prevents passage of fluid through the opening, the biasing element being structurally arranged to permit the actuator to displace from a closed position to a relief position so that fluid passes through the opening when a vacuum threshold is reached within the aspiration passageway.