Device for transdermal electrotransport delivery of fentanyl and sufentanil
First Claim
1. A patient-worn device for transdermally delivering fentanyl by electrotransport and which allows a patient who is suffering from pain and who is wearing the device to obtain self-administered analgesia, the device comprising:
- a donor reservoir hydrogel formulation comprised of fentanyl in a form to be delivered solely by electrotransport;
a counter reservoir;
a source of electrical power electrically connected to the reservoirs; and
a control circuit for controlling electrotransport current, the control circuit including a patient-controlled switch which activates the device and wherein the reservoir, the power source and the control circuit deliver solely by electrotransport a dose of about 20 μ
g to about 60 μ
g of fentanyl over a predetermined delivery period of up to about 20 minutes and terminate said delivery at the end of said delivery period, and wherein the control circuit allows the patient to self-administer from about 10 to about 100 additional of said doses over a period of 24 hours.
1 Assignment
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Accused Products
Abstract
The invention provides an improved electrotransport drug delivery system for analgesic drugs, namely fentanyl and sufentanil. The fentanyl/sufentanil is provided as a water soluble salt (e.g., fentanyl hydrochloride), preferably in a hydrogel formulation, for use in an electrotransport device (10). In accordance with the present invention, a transdermal electrotransport delivered dose of fentanyl/sufentanil is provided which is sufficient to induce analgesia in (e.g., adult) human patients suffering from moderate-to-severe pain as associated with major surgical procedures.
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Citations
18 Claims
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1. A patient-worn device for transdermally delivering fentanyl by electrotransport and which allows a patient who is suffering from pain and who is wearing the device to obtain self-administered analgesia, the device comprising:
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a donor reservoir hydrogel formulation comprised of fentanyl in a form to be delivered solely by electrotransport;
a counter reservoir;
a source of electrical power electrically connected to the reservoirs; and
a control circuit for controlling electrotransport current, the control circuit including a patient-controlled switch which activates the device and wherein the reservoir, the power source and the control circuit deliver solely by electrotransport a dose of about 20 μ
g to about 60 μ
g of fentanyl over a predetermined delivery period of up to about 20 minutes and terminate said delivery at the end of said delivery period, and wherein the control circuit allows the patient to self-administer from about 10 to about 100 additional of said doses over a period of 24 hours.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A patient-worn device for transdermally delivering sufentanil by electrotransport and which allows a patient who is suffering from pain and who is wearing the device to obtain self-administered analgesia, the device comprising:
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a donor reservoir hydrogel formulation comprised of sufentanil in a form to be delivered solely by electrotransport;
a counter reservoir;
a source of electrical power electrically connected to the reservoirs; and
a control circuit for controlling electrotransport current, the control circuit including a patient-controlled switch which activates the device and wherein the reservoirs, the power source and the control circuit deliver solely by electrotransport a dose of about 2.3 μ
g to about 7.0 μ
g of sufentanil over a predetermined delivery period of up to about 20 minutes and terminate said delivery at the end of said delivery period, and wherein the control circuit allows the patient to self-administer from about 10 to about 100 additional of said doses over a period of 24 hours.- View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification