FLUID DISPENSER

摘要

Described herein is a dispenser for dispensing fluid that, integrated into one hand piece, comprises a variable volume chamber with a plunger disposed within the chamber and a chamber inlet and outlet. The inlet and outlet communicate directly with a common chamber volume and the plunger translates in a linear direction relative to the chamber along a common longitudinal axis to expel fluid from the chamber (expel stroke) and/or draw fluid into the chamber (drawing stroke). The plunger is linked to a controller, a power source and a motor that drives translation movement of the plunger. The dispenser described herein offers a variety of advantages over the art including accurate dosing without the user having to manually regulate the dose amount—the amount to be dosed is related to the volume of fluid in the chamber which can be pre-set or varied automatically using sensors and controllers.

主权项

1. A dispenser for dispensing fluid that, integrated into one hand piece, comprises:
a variable volume chamber with a plunger disposed within the chamber and a chamber inlet and outlet, the inlet and outlet communicating directly with a common chamber volume, wherein the plunger is configured to translate linearly relative to the chamber along a common longitudinal axis; a power source and a motor configured to drive translation movement of the plunger thereby causing a change in volume in the chamber; a trigger; and a controller in communication with the power source, the motor, and the trigger, the controller being configured to, in response to actuation of the trigger, direct the motor to drive translation movement of the plunger to one or more of expel fluid from the chamber (expel stroke) and draw fluid into the chamber (drawing stroke), wherein the controller is further configured to receive at least one variable input based on a subject to which the fluid is to be applied and automatically vary the volume of fluid expelled from and/or drawn into the chamber by adjusting a position of the plunger along the longitudinal axis based on the at least one variable input.