Transcutaneous multimodal delivery system (TMDS)

Patent metadata

Field	Value
Publication number	US-9089677-B2
Application number	US-201213358391-A
Country	US
Kind code	B2
Filing date	Jan 25, 2012
Priority date	Jan 25, 2011
Publication date	Jul 28, 2015
Grant date	Jul 28, 2015

Abstract

A transcutaneous multimodal delivery device for drug delivery and the methods of making and using the same are provided.

First claim

What is claimed is:

1. A transcutaneous multimodal delivery device (TMDS), comprising a transcutaneous drug delivery (TDD) component and a sustained delivery and retention (SDR) component;
wherein the TMDS provides a controlled delivery of at least one active agent comprising a first therapeutic drug or a second therapeutic drug where the first therapeutic drug and the second therapeutic drug are the same or different;
wherein the TDD component comprises dissolvable microneedles at least one of which having a sharp tip and a blunt tip, wherein the sharp tip has a dimension so as to allow the microneedles to penetrate eschar of skin without reaching viable tissue, and wherein the blunt tip is enclosed within the sharp tip and has a tip angle that is less sharp than that of the sharp tip,
wherein the SDR component comprises a plurality of release control vehicles comprising the first therapeutic drug or second therapeutic drug to provide controlled release of the first therapeutic drug or the second therapeutic drug, and
wherein the plurality of release control vehicles of the SDR component is enclosed within the blunt tip and the sharp tip of the dissolvable microneedles of the TDD component and released upon dissolution of the dissolvable microneedles.

2. The TMDS of claim 1 , wherein the sharp tip and the blunt tip enclosed within completely dissolve within a period ranging from about 10 seconds to about 10 days upon application to a patient.

3. The TMDS of claim 2 , wherein the period is selected from the group consisting of 30 seconds, 30 minutes, 1 hr, 2 hr, 5 hr, 10 hr, 24 hr, 2 days, 5 days, and 10 days; and
wherein the plurality of release control vehicles provides a sustained release of the first therapeutic drug or the second therapeutic drug over a period up to 30 days.

4. The TMDS of claim 1 , wherein at least one of the first therapeutic drug and the second therapeutic drug is an antimicrobial agent.

5. The TMDS of claim 4 , wherein the antimicrobial agent is selected from group consisting of silver nitrate, nanoparticulate silver (Ag nano ), mafenide acetate (MA), iodine, and silver sulfadiazine (SDD); wherein the biologically active agent is platelet derived growth factor (PDGF) or isolated human cells encapsulated within the release control vehicle; wherein the isolated human cells comprises a stem cell, a non-stem cell or combination thereof.

6. The TMDS of claim 1 , wherein at least one of the first therapeutic drug and the second therapeutic drug is a biologically active agent.

7. The TMDS of claim 1 , wherein the dissolvable microneedles are formed from a material comprising a dissolvable polymer.

8. The TMDS of claim 1 , wherein the dissolvable microneedles comprise carboxylmethyl cellulose (CMC), a derivative of CMC, hydroxypropyl methylcellulose phthalate (HPMCP), a derivative of HPMCP, or a combination thereof.

9. The TMDS of claim 1 , wherein the plurality of release control vehicles comprises a biodegradable polymer.

10. The TMDS of claim 1 , wherein the plurality of release control vehicles comprises hyaluronic acid (HA), a derivative of HA, collagen, or a derivative of collagen, or a combination thereof.

11. The TMDS of claim 1 , wherein the sharp tip is capable of complete dissolution within about 1 hr upon application to a patient.

12. The TMDS of claim 1 , wherein the plurality of release control vehicles is selected from the group consisting of liposomes, nanoparticles, microparticles, dendrimers, soluble polymer conjugates, and a combination thereof, wherein each of the plurality of release control vehicles comprises a targeting ligand Y for targeted delivery of the first therapeutic drug or the second therapeutic drug; and
wherein the targeting ligand Y is attached to any of the following:
surface of liposomes of phospholipid bilayer where the first therapeutic drug or the second therapeutic drug is associated within the bilayer and a hydrophilic layer is located inside the bilayer as the hydrophilic core;
surface of nanoparticles comprising the first therapeutic drug or the second therapeutic drug;
surface of microparticles the first therapeutic drug or the second therapeutic drug; surface of micelles having a hydrophilic outer shell and a hydrophobic core where the first therapeutic drug or the second therapeutic drug is located in the hydrophobic core;
surface of dendrimers comprising the first therapeutic drug or the second therapeutic drug; and soluble polymer conjugates where the first therapeutic drug or the second therapeutic drug is attached to side chains of polymer.

13. A method of treating or ameliorating a skin condition or non-skin condition, comprising applying to a patient having the skin condition a transcutaneous multimodal delivery device (TMDS) comprising a transcutaneous drug delivery (TDD) component and a sustained delivery and retention (SDR) component,
wherein the skin condition is wounded skin or diseased skin and the non-skin condition is muscle injury, bone injury, or cartilage injury;
wherein the TMDS provides a controlled delivery of at least one active agent comprising a first therapeutic drug or a second therapeutic drug where the first therapeutic drug and the second therapeutic drug is the same or different;
wherein the TDD component comprises dissolvable microneedles having a dimension so as to allow the microneedles to penetrate eschar of skin without reaching viable tissue,
wherein the TDD component comprises dissolvable microneedles at least one of which having a sharp tip and a blunt tip, wherein the sharp tip has a dimension so as to allow the microneedles to penetrate eschar of skin without reaching viable tissue, and wherein the blunt tip is enclosed within the sharp tip and has a tip angle that less sharp than that of the sharp tip,
wherein the SDR component comprises a plurality of release control vehicles comprising the first therapeutic drug or second therapeutic drug to provide controlled release of the first therapeutic drug or the second therapeutic drug, and
wherein the plurality of release control vehicles of the SDR component is enclosed within the blunt tip and the sharp tip of the dissolvable microneedles of the TDD component and released upon dissolution of the dissolvable microneedles.

14. The method of claim 13 , wherein the dissolvable microneedles completely dissolve within a period ranging from about 10 seconds to about 10 days upon application to a patient.

15. The method of claim 14 , wherein the period is selected from the group consisting of 30 seconds, 30 minutes, 1 hr, 2 hr, 5 hr, 10 hr, 24 hr, 2 days, 5 days, and 10 days; and
wherein the plurality of release control vehicles provides a sustained release of the first therapeutic drug or the second therapeutic drug over a period up to 30 days.

16. The method of claim 13 , wherein at least one of the first therapeutic drug and the second therapeutic drug is an antimicrobial agent.

17. The method of claim 16 , wherein the antimicrobial agent is selected from group consisting of silver nitrate, nanoparticulate silver (Ag nano ), mafenide acetate (MA), iodine, and silver sulfadiazine (SDD); and wherein the biologically active agent is platelet derived growth factor (PDGF).

18. The method of claim 13 , wherein at least one of the first therapeutic drug and the second therapeutic drug is a biologically active agent.

19. The method of claim 13 , wherein the dissolvable microneedles are formed from a material comprising a dissolvable polymer.

20. The method of claim 13

Assignees

• Soo B Chia
• Ting Kang
• Wu Ben
• Zhang Kevin
• Univ California

Inventors

• Soo B Chia
• Ting Kang
• Wu Ben
• Zhang Kevin

Classifications

• A61K9/0021

  Intradermal administration, e.g. through microneedle arrays or needleless injectors · CPC title

• Y10T29/49826

  Assembling or joining · CPC title

• A61M2037/0046

  Solid microneedles · CPC title

• A61M2037/0053

  Methods for producing microneedles · CPC title

• A61M2037/0061

  Methods for using microneedles · CPC title