Fluid spraying apparatuses, and related systems and methods

摘要

Embodiments disclosed herein are directed to fluid spraying apparatuses, and related systems and methods. The disclosed fluid spraying apparatuses may be used, for example, to spray a medically suitable fluid on a target region of a subject, such as for treating or removing tissue of the subject. In an embodiment, a fluid spraying apparatus includes a spray mechanism including at least one reservoir, and a spraying device operably coupled to the at least one reservoir which has an adjustable spray nozzle. The fluid spraying apparatus includes a distance sensor configured to sense information at least related to a distance to a target region of a subject and output one or more signals encoding the information, and control electrical circuitry operably coupled to the spray mechanism and the distance sensor. The control electrical circuitry is configured to activate the spray mechanism responsive to receiving the one or more signals.

主权项

1. A fluid spray apparatus for treating a target region of at least one tissue of a subject with a fluid comprising a cryogen or a pyrofluid, the fluid spraying apparatus comprising:
a spray mechanism including,
at least one reservoir holding the fluid comprising the cryogen or the pyrofluid;a spraying device operably coupled to the at least one reservoir, the spraying device including,an adjustable spray nozzle including an elongated nozzle body having a passageway extending therethrough that is fluidly connected to the at least one reservoir, the passageway terminating in an output orifice;
an obstruction feature deployable within the passageway to alter a width of the output orifice; anda nozzle actuator configured to deploy the obstruction feature; a distance sensor configured to sense information at least related to a distance to a target region of the at least one tissue of the subject from the output orifice of the adjustable spray nozzle, and output one or more signals encoding the information; and a computing device including,
control electrical circuitry coupled to the spray mechanism, the nozzle actuator, and the distance sensor, wherein the nozzle actuator is operably coupled to the spray nozzle and the nozzle actuator is configured to adjust the width of the output orifice of the adjustable spray nozzle responsive to receiving one or more signals indicating the distance between the output orifice and the target region; andnon-transitory memory operably coupled to the control electrical circuitry, the non-transitory memory for storing data encoding instructions for the activation or control of the spray mechanism including directing the nozzle actuator to controllably adjust the width of the out orifice of the adjustable spray nozzle by deploying or undeploying the obstruction feature to adjust an area of the target region that is sprayed by the fluid from the output orifice of the adjustable spray nozzle.