US PATENT SUBCLASS 604 / 890.1
CONTROLLED RELEASE THERAPEUTIC DEVICE OR SYSTEM


Current as of: June, 1999
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604 /   HD   SURGERY

890.1CONTROLLED RELEASE THERAPEUTIC DEVICE OR SYSTEM {2}
891.1  DF  .~> Implanted dynamic device or system
892.1  DF  .~> Osmotic or diffusion pumped device or system


DEFINITION

Classification: 604/890.1

CONTROLLED RELEASE THERAPEUTIC DEVICE OR SYSTEM:

(under the class definition) Subject matter in which the body is treated by a therapeutic delivery device or system which has dynamic structural means therein to controllably dispense a body treating material to the body over a prolonged period of time by the slow release of the said body treating material.

(1) Note. The delivery device may act to dispense the therapeutic means either continuously or discontinuously.

(2) Note. This and the indented subclass 890.1 provides for a device or system comprising a reservoir and control, pump or controllable valve means for dispensing a drug to a living body, in other words, a device which is more than a passive reservoir that is implanted or attached to the living body.

(3) Note. The devices of this and the indented subclasses contain moving mechanical parts which effect the release of drugs in a controlled manner.

SEE OR SEARCH CLASS

424, Drug, Bio-Affecting and Body Treating Composition,

422+, for preparations characterized by special physical form which release medication at a controlled rate where the inserted or implanted article is no more than (a) a single or multilayered assembly impregnated with or (b) a reservoir from which medicament is released by diffusion or osmosis; sublcass 448 for a bandage or transdermal or medicator held in place by a claimed pressure sensitive adhesive; subclass 449 for a transdemal or percutaneons device for the controlled release or medicament through the unbroken skin. Subclass 473 for a tablet with a porous perforated apertured or sieved layer for the controlled release of medicament; subclass 484 for an elutable or dissolvable matrix.