In one embodiment, a phacoemulsification system includes a phacoemulsification probe configured to be inserted into an eye, and including a needle, a horn configured to support the needle, and an ultrasonic actuator connected to the horn and configured to vibrate the needle to emulsify a lens of the eye, an aspiration line partially disposed in the needle, a pumping sub-system connected to the aspiration line and configured to remove fluid and waste matter from the eye via the aspiration line, a valve disposed in the aspiration line and configured to control fluid connectivity in the aspiration line, a sensor configured to provide a signal indicative of a fluid metric in the aspiration line, and a controller configured to find an activation status of the ultrasonic actuator, and selectively control the valve responsively to the fluid metric and the activation status of the ultrasonic actuator.

An eyelid retractor and irrigation tool includes a handle portion defining a longitudinal first axis configured to be grasped by a user and a hook portion connected to the handle portion for retracting an eyelid. The hook portion of the tool includes: inwardly and outwardly facing walls, which are curved about a second axis, which is distinct from the first axis; an edge wall extending between the inwardly and outwardly facing walls; and an interior cavity defined by the walls. The tool further comprises at least one opening extending through the inwardly facing wall or the outwardly facing wall fluidly connected to the interior cavity and positioned such that fluid in the interior cavity passes through the at least one opening to irrigate portions of an eye including the eyelid.

Systems and methods for nasal irrigation are provided in which a nasal irrigation device includes a source of saline solution, an effluent receptacle, a nasal interface, a vacuum source, a fluid passageway to communicate the source of saline solution with the effluent receptacle through the nasal interface and a nasal cavity of the user, and a switch and valve assembly for selectively controlling the vacuum source and flow of the saline solution through the fluid passageway. The saline solution source bottle is disposed relative to the device to provide gravitational inducement of saline solution to the nasal interface in engagement to the device user's nostrils. A combination of the gravitational inducement and the relative vacuum from an effluent receptacle generates a fluid flow for irrigating, cleansing and massaging the nasal cavity and ostia of a user. The entire device is assembled as a hand-held device for convenient lifting and disposal against the user's nostrils.

A surgical cassette for an ophthalmic surgical system includes an irrigation system, an aspiration system, and a computer. The irrigation system is in fluid communication with a handpiece and carries fluid toward a surgical site. The aspiration system is in fluid communication with the handpiece via an aspiration conduit and carries fluid away from the surgical site. The computer instructs the aspiration system to vibrate fluid back and forth within the aspiration conduit to perform a priming procedure.

A surgical cassette for an ophthalmic surgical system includes an irrigation system and an aspiration system. The irrigation system is in fluid communication with a handpiece and carries fluid toward a surgical site. The aspiration system is in fluid communication with the handpiece and carries fluid away from the surgical site. The aspiration system includes an aspiration pump and tubing of an aspiration conduit. The aspiration pump generates a normal vacuum pressure within the aspiration conduit to carry fluid away from the surgical site during normal operation. The tubing has a larger cross-sectional area in response to normal vacuum pressure. The tubing collapses from the larger cross-sectional area to a smaller cross-sectional area in response to an occlusion; maintains the smaller cross-sectional area during a post-occlusion break surge to mitigate the post-occlusion break surge; and returns to the larger cross-sectional area after the post-occlusion break surge.

A surgical cassette for an ophthalmic surgical system comprises an irrigation system and an aspiration system. The irrigation system is in fluid communication with a handpiece and carries fluid toward a surgical site. The aspiration system is in fluid communication with the handpiece via an aspiration conduit, and carries fluid away from the surgical site. The aspiration system comprises a chamber that expands to store fluid, and collapses to move the fluid to meet a volume demand in the aspiration conduit to mitigate a post-occlusion break surge.

An apparatus, system and method of controlling the flow rate of an irrigation fluid. The apparatus, system and method include modifying a pressure gravitationally above the irrigation fluid in a fluid reservoir to increase the flow rate through a surgical pack by iteratively controlling infusion of gas to the fluid reservoir. The iteratively controlling comprises sensing an in-range response to said modifying, wherein the infusion of gas is enabled; and sensing an out-of-range response to said modifying. If, based on prior ones of said modifying: the out-of-range response poses no danger to a patient, the infusion of gas is enabled; the out-of-range response poses a substantial danger to the patient, the infusion of gas is disabled; or the out-of-range response poses no substantial danger to the patient, the iteratively controlling comprises applying a successive series of modifications to correct the out-of-range response.

Disclosed herein are systems, devices, and methods for the removal of objects from the body. The device may be a urethral catheter configured to aspirate kidney stones from the urinary tract through one or more aspiration ports at the distal face or along a lateral side of the catheter. The catheter may include one or more irrigation ports at the distal face or along the lateral side of the catheter for dislodging kidney stones. The device may be steerable. The spatial arrangement of the one or more irrigation ports with respect to the one or more aspiration ports may vary. The device may include an irrigation tube and/or a shield member configured to spatially confine the kidney stones adjacent the catheter. Various temporal patterns of aspiration and irrigation are disclosed for optimizing removal of kidney stones.

A phacoemulsification system that includes a hand-graspable body and a phacoemulsification needle extending from a distal portion of the body is disclosed herein. The phacoemulsification system may also include an impeller pump carried by the hand-graspable body and configured to convey an aspiration fluid from a surgical site. The impeller pump may include an aspiration motor and a flexible impeller coupled to and rotatably driven by the aspiration motor. The flexible impeller may be arranged to aspirate fluid and emulsified lens tissue from the surgical site.

Provided is a medical handpiece having liquid spray and suction functions and capable of being replaced with a drill. The medical handpiece includes a handpiece body having an accommodation space therein, a spray unit receiving liquid from an outside to spray the liquid onto a target to be treated, a pump unit transmitting air pressure to the spray unit to increase a spray speed of liquid sprayed by the spray unit, a drive unit converting a rotary motion into a reciprocating motion to transmit power to the pump unit, and a suction unit sucking liquid and foreign matter from the target to be treated.