Patent ID: 6183442
Filing Date: 2001-02-06
Classification: A61B,A61M

Abstract:
A device comprising:a. a fluid reservoir;b. a tissue penetrator or needle detachably engaging a first end of the reservoir;c. a plunger associated with the reservoir at its second end and designed to slidingly engage an interior surface of the reservoir;d. a solenoid having a shaft detachably engaging a top of the plunger for moving the plunger within the reservoir at a controlled rate for controlled delivery of material into or extraction of bio-material out of a tissue site;e. a power supply and associated circuitry for supplying electrical power to the solenoid;f. a switch for starting and stopping the device;g. a housing surrounding the reservoir, the plunger, the solenoid and the power supply; andh. a disposable retractable protector attached to the housing at its proximal end and including a septum at its distal to protect a tip of the penetrator and adapted to engage a portion of an interior surface of the housing at its proximal end.