Viscous formulations and their use in needle-free injection
Formulations are described that are viscous and will benefit from needle-free delivery at high driving pressures. Conventional delivery of these viscous formulations by hypodermic syringes is inconvenient as well as painful. Formulations include those which have a viscosity of about 5 cS or more at about 20° C. and which can have 0.5 ml or more administered by a needle-free injector in about 0.1 second±0.02 seconds.
1. A needle-free device, comprising:
a container having therein a formulation having a viscosity of 100 cS or more at 20° C., the formulation comprising a pharmaceutically acceptable carrier and a pharmaceutically active drug;
an injector comprised of a channel and power source, the channel having a channel length to exit opening diameter ratio of 1.7±20%; and
wherein the power source comprises sufficient power to extrude the formulation through the channel at a rate of 5,000 microliters or more per second.
2. The device of claim 1 , wherein the formulation has a viscosity of 1,000 cS or more at 20° C.
3. The device of claim 1 , wherein the power source is selected from the group consisting of a spring, compressed gas, and a chemical reaction.
4. A needle-free device, comprising:
a container having therein a formulation having a viscosity of 1,000 cS or more at 20° C., the formulation comprising a pharmaceutically acceptable carrier and a pharmaceutically active drug;
an injector comprised of a channel and power source, the channel having a channel length to exit opening diameter ratio of 1.7±20%; and
wherein the power source comprises sufficient power to extrude the formulation through the channel at a rate of 5,000 microliters or more per second;
wherein the pharmaceutically active drug is selected from the group consisting of Aripiprazole, Clozapine, Zyprasidone, Molindone, Quetiapine, Olanzapine, Risperidone, Paliperidone, Iloperidone, and pharmaceutically acceptable salts and ester forms, and combinations thereof.