摘要:
An apparatus and method for transdermally delivering desmopressin comprising a delivery system having a microprojection member (or system) that includes a plurality of microprojections (or array thereof) that are adapted to pierce through the stratum corneum into the underlying epidermis layer, or epidermis and dermis layers. In one embodiment, the desmopressin is contained in a biocompatible coating that is applied to the microprojection member.
摘要:
An apparatus and method for transdermally delivering a biologically active agent comprising a delivery system having a microprojection member (or assembly) that includes a plurality of microprojections (or array thereof) that are adapted to pierce through the stratum corneum into the underlying epidermis layer, or epidermis and dermis layers. In one embodiment, the VEGF-based agent is contained in a biocompatible coating that is applied to the microprojection member.
摘要:
A system and method for transdermally delivering a biologically active agent comprising one or more electrodes having stratum corneum-piercing projections and a circuit that delivers an electrical signal to the electrodes to electroporate a cell membrane. Preferably, the system is configured to generate homogeneous electrical fields and, more preferably, to generate spherically or semispherically symmetrical electric fields. Methods of the invention include applying a first electric signal to facilitate transdermal transport of the agent and applying a second electric signal to facilitate intracellular transport of the agent.
摘要:
A transdermal electrotransport drug delivery device having an anode, a cathode and a source of electrical power electrically connected to the anode and the cathode. At least one of the anode and the cathode includes an electrode and a reservoir comprised of a housing composed of a polymeric material and an aqueous medium in contact with the housing. The aqueous medium includes (i) a drug or an electrolyte salt or a mixture thereof, (ii) propylene glycol, and (iii) an antimicrobial agent in an amount sufficient to inhibit microbial growth in the aqueous medium. The propylene glycol prevents the antimicrobial agent from being adsorbed by other materials used in the construction of the delivery device. A process for preparing a transdermal electrotransport drug delivery device is also provided.
摘要:
An apparatus and method for transdermally delivering a biologically active agent comprising a delivery system having a microprojection member (or system) that includes a plurality of microprojections (or array thereof) that are adapted to pierce through the stratum corneum into the underlying epidermis layer, or epidermis and dermis layers, a formulation containing the biologically active agent and an oscillation inducing device. In one embodiment, the biologically active agent is contained in a biocompatible coating that is applied to the microprojection member. In a further embodiment, the delivery system includes a gel pack having an agent-containing hydrogel formulation that is disposed on the microprojection member after application to the skin of a patient. In an alternative embodiment, the biologically active agent is contained in both the coating and the hydrogel formulation.
摘要:
The invention provides for a formulation for coating one or more microprojections using a non-volatile counterion to improve solubility of a biologically active agent. The invention also includes formulations having a volatile counterion to reduce the solubility of a portion of the biologically active agent.
摘要:
An electrotransport composition comprises at least one C.sub.2 -C.sub.4 lower alcohol, unsaturated derivatives thereof, or mixtures thereof, and at least one C.sub.8 -C.sub.4 higher alcohol, unsaturated derivatives thereof, or mixtures thereof. An electrotransport device and a method of increasing transdermal electrotransport flux utilize the composition of the invention for delivering pharmaceutically-acceptable agents across a body surface such as skin.
摘要:
An intravitreal injection system for administering a pharmacological agent formulation to an intravitreal compartment of an eye, comprising (i) an injection member coupled to, or comprising, an internal formulation chamber that is adapted to receive and contain the pharmacological agent formulation therein, (ii) a needle having a first end that is in communication with a formulation chamber and a second injection end, and (iii) a movable platform for positioning the system on the eye, guiding the needle, and limiting the penetration depth of the needle into the eye.
摘要:
Compositions of and methods for formulating and delivering biologically active agent formulations having enhanced physical stability, and wherein deterioration from the presence of oxygen and/or water is minimized and/or controlled, to yield a stable formulation. The compositions of and methods for formulating and delivering biologically active agents of the present invention further facilitate their incorporation into a biocompatible coating which can be employed to coat a stratum-corneum piercing microprojection, or a plurality of stratum-corneum piercing microprojections of a delivery device, for delivery of the biocompatible coating through the skin of a subject, thus providing an effective means of delivering the biologically active agents.
摘要:
Skin patches (20) having a microprojection array (10), a reservoir (18) containing an antigenic agent and an immune response augmenting adjuvant, and methods of using same to vaccinate animals (e.g., humans) is disclosed. In a preferred embodiment, the microprojection arrays (10) are composed of a photoetched and micro-punched titanium foil (14). The microprojections (12) are coated with a liquid formulation containing a vaccine antigen and an adjuvant such as glucosaminyl muramyl dipeptide, dried, and applied to skin of the animal to be vaccinated using an impact applicator. The microprojections (12) create superficial pathways through the stratum corneum to facilitate permeation of antigenic agent and adjuvant. Antigen dose and depth of penetration can be controlled. This technology has broad applicability for a wide variety of therapeutic vaccines to improve efficacy, and convenience of use.