Methods and apparatus for improved administration of pharmaceutically active compounds

Inactive Publication Date: 2001-10-16
NUVO RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, high peaks and low valleys of concentration are typical in injection and oral administrations and are often associated with undesirable side effects and/or less than satisfactory intended effects.
Although these primary factors affecting onset time and delivery rate are known, no existing DDDS is designed to have alterable delivery rate in the course of the application of the drug.
While a DDDS works well in many aspects, current dermal drug delivery technology has some serious limitations, including: 1) the onset time being undesirably long for many DDDSs; 2) the rate that the drug is taken into the systemic circulation or the targeted area(s) of the body cannot be easily varied once the DDDS is applied onto the skin and, when the steady state delivery rate is achieved, it cannot be easily changed; and 3) the skin permeability being so low that many drugs are excluded from dermal delivery because the amount of drug delivered is not high enough to reach a therapeutic level.
However, once the form/formulation is delivered into the storage sites, it is usually difficult to alter the rate, known as the "release rate", that the drug is released from the form/formulation at the storage sites, and

Method used

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  • Methods and apparatus for improved administration of pharmaceutically active compounds
  • Methods and apparatus for improved administration of pharmaceutically active compounds
  • Methods and apparatus for improved administration of pharmaceutically active compounds

Examples

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example 1

One example of using the embodiment of the present invention illustrated in FIGS. 2-4 for administering analgesic material for relief of pain consists of a patient or care giver placing the DDDS 120 on the skin 134 of the patient, which preferably adheres to the skin 134 with DDDS adhesive 132. The patient or care giver then attaches the temperature control apparatus 100 on top of the DDDS 120, which adheres to the DDDS 120 with temperature control apparatus adhesive 112. Oxygen in ambient air flows into the temperature regulating mechanism 108 through holes 114 and air permeable membrane 116. Of course, it is understood that the rate at which oxygen contacts the temperature regulating mechanism 108 is determined by the size and number of the holes 114 on the top wall 104, as well as the air permeability of the air permeable membrane 116. A heat generating (exothermic) chemical reaction occurs in the temperature regulating mechanism 108. Heat from this reaction passes through the tempe

example 2

An example of using the embodiment of the present invention illustrated in FIGS. 8-12 for administering analgesic material to treat breakthrough pain consists of a patient or care giver placing the DDDS 160, 165 on the skin 134 of the patient with the temperature control apparatus 150 placed thereover. By way of example, when the DDDS 160, 165 is a commercially available fentanyl patch, Duragesic-50.RTM., it takes several hours after the application of the DDDS 160, 165 to obtain a sufficient steady state level of fentanyl in the patient's bloodstream to control baseline pain. However, such as with the treatment of cancer patients, a patient will from time to time suffer breakthrough pain, which is a suddenly increased but usually not long lasting pain. When a patient feels that a breakthrough pain episode is imminent, the patient places the temperature control apparatus 150 over the DDDS 160, 165. The heat from the temperature control apparatus 150 increases the temperature of the fen

example 3

Another example of using the embodiment of the present invention illustrated in FIGS. 8-12 for dermally administering nicotine for suppressing nicotine craving consists of a user placing a nicotine DDDS 160, 165 on the skin 134. After a few hours, the user should obtain a steady state nicotine concentration in the bloodstream that is sufficient to suppress a "baseline" nicotine craving. When the user starts to have an episode of increased nicotine craving, the user puts the temperature control apparatus 150 on top of the DDDS 160, 165. The temperature control apparatus 150 preferably heats for at least 15 minutes before the exothermic reaction exhausts the temperature regulating, mechanism 108. The heat increases the transport of nicotine across the skin, and increases the blood flow in the issues under the DDDS 160, 165 which carries nicotine stored in the tissues under the DDDS 160, 165 into the systemic circulation at increased rates. As a result, the user gets a rapid increase in h

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Abstract

Methods and apparatus for improving administration of drugs through the use of heat and other physical means. The present invention relates to the use of heat and other physical means in conjunction with specially designed dermal drug delivery systems, conventional commercial dermal drug delivery systems, or drugs delivered into a sub-skin depot site via injection and other methods to alter, mainly increase, the drug release rate from the dermal drug delivery systems or the depot sites to accommodate certain clinical needs.

Description

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Claims

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Application Information

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Owner NUVO RES
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