Delivery devices and methods with collimated gas stream and particle source

• US 8,388,569 B2
• Filed: 04/19/2011
• Issued: 03/05/2013
• Est. Priority Date: 04/19/2011
• Status: Active Grant

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Uhland, Scott, Peeters, Eric
• Primary Examiner(s): Mehta, Bhisma
• Assistant Examiner(s): WILSON, LARRY ROSS
• Application Number:
  US13/089,769
• Publication Number:
  US 20120271221A1
• Time in Patent Office: 686 Days
• Field of Search: 604 23- 26, 604/58, 604 68- 70, 604/140, 604145-148
• US Class Current: 604/24
• CPC Class Codes: A61D 7/00 Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals for reproduction or fertilisation A61D19/00 ; devices for implanting pellets, radon seeds or the like A61M37/0069
• CPC Class Codes: A61M 37/00 Other apparatus for introducing media into the body for reproduction or fertilisation A61B17/425; apparatus for iontophoresis or cataphoresis A61N1/30; Percutany, i.e. introducing medicines into the body by diffusion through the skin salt baths A61H33/04
• CPC Class Codes: A61M 5/2046 Media being expelled from injector by gas generation, e.g. explosive charge
• CPC Class Codes: A61M 5/2053 Media being expelled from injector by pressurised fluid or vacuum for infusion A61M5/145, A61M5/155
• CPC Class Codes: A61M 5/3007 with specially designed jet passages at the injector's distal end
• CPC Class Codes: A61M 5/3015 for injecting a dose of particles in form of powdered drug, e.g. mounted on a rupturable membrane and accelerated by a gaseous shock wave or supersonic gas flow cell injection devices C12M3/006

Abstract

Delivery devices, methods and systems are provided for the delivery of particles into a biological tissue. The device includes a gas source comprising a gas or capable of selectively producing a gas; a first particle source comprising a first plurality of particles; a first collimator fluidly connected with the gas source and adapted to form a collimated stream of the first plurality of particles entrained in the gas. The device also includes a tissue-interfacing surface adapted to interface with a surface of the tissue and orient the first collimator with the tissue such that the collimated stream of the first plurality of particles will penetrate the tissue in a direction substantially perpendicular to the surface of the tissue.

Claims

1. A delivery device for the delivery of particles into a biological tissue comprising:

a housing;

a gas source comprising a gas or capable of selectively producing a gas;

a first particle source comprising a first plurality of particles;

a first collimator fluidly connected with the gas source and comprising a plurality of conduits adapted to form a first plurality of collimated streams of the first plurality of particles entrained in the gas; and

a tissue-interfacing surface located at one end of the housing and adapted to interface with a surface of the tissue and orient the first collimator with the tissue such that the first plurality of collimated streams of the first plurality of particles will penetrate the tissue in a direction substantially perpendicular to the surface of the tissue.

2. The delivery device of claim 1, wherein the first plurality of particles comprise tissue abrasive particles.

3. The delivery device of claim 1, wherein the first plurality of particles comprise tissue marking particles, nourishing particles, nutritional particles, or cosmetic particles.

4. The delivery device of claim 1, wherein the first plurality of particles comprise drug particles.

5. The delivery device of claim 1, further comprising a second particle source comprising a second plurality of particles;

and wherein the first collimator is adapted to form a second plurality of collimated streams of the second plurality of particles entrained in the gas.

6. The delivery device of claim 5, wherein the delivery device is adapted to form the second plurality of collimated streams of particles after forming the first plurality of collimated streams of particles.

7. The delivery device of claim 5, wherein the first collimator, the first particle source, and the second particle source are provided in a removable cartridge.

8. The delivery device of claim 1, wherein the first collimator and the first particle source are provided in a removable cartridge.

9. The delivery device of claim 1, wherein the first collimator has an inlet end and an outlet end;

and wherein the first particle source is positioned and configured to release the first plurality of particles into the gas between the inlet end and the outlet end of the first collimator.

10. A method of delivering particles into a biological tissue comprising:

delivering a pressurized gas into a plurality of conduits of a collimator to produce a plurality of streams of gas; and

then

releasing a first plurality of particles into the plurality of streams of gas to produce a plurality of collimated streams of the first plurality of the particles entrained in the gas; and

delivering the first plurality of particles through a surface of the tissue in a direction substantially perpendicular to the surface of the tissue.

11. The method of claim 10, wherein the first plurality of particles comprise drug particles.

12. The method of claim 10, wherein the first plurality of particles comprise abrasive particles.

13. The method of claim 10, wherein the step of delivering the first plurality of particles through the surface of the tissue forms a plurality of microconduits in the surface of the tissue.

14. The method of claim 13, further comprising:

applying a drug-delivery patch to the tissue over the plurality of microconduits, the drug-delivery patch comprising a drug; and

allowing the drug to diffuse into the tissue through the plurality of microconduits.

15. The method of claim 14, wherein the drug-delivery patch comprises a drug-permeable tissue-interfacing surface and a drug-impermeable backing layer, and wherein the drug is contained between the tissue-interfacing surface and the backing layer.

16. The method of claim 10, further comprising, after the step of delivering the first plurality of particles through the surface of the tissue,

releasing a drug into the plurality of streams of gas to produce a plurality of collimated streams of the drug entrained in the gas;

and

delivering the drug through the surface of the tissue in the direction substantially perpendicular to the surface of the tissue.

17. The method of claim 10, wherein the first plurality of particles are released from a release-activatable tape having the first plurality of particles disposed thereon.

18. The method of claim 10, wherein the step of releasing the first plurality of particles into the plurality of streams of gas comprises rupturing a rupturable membrane separating the first plurality of particles from the collimator.

19. A drug delivery system for delivering a drug into a biological tissue comprising:

a particle delivery device for the delivery of particles into a tissue comprising;

a housing;

a gas source comprising a gas;

a first particle source comprising a first plurality of particles;

a first collimator fluidly connected with the gas source and comprising a plurality of conduits adapted to form a first plurality of collimated streams of the first plurality of particles entrained in the gas; and

a tissue-interfacing surface located at one end of the housing and adapted to interface with a surface of the tissue and align the first collimator with the tissue such that the first plurality of collimated streams of the first plurality of particles will penetrate the tissue in a direction substantially perpendicular to the surface of the tissue; and

a drug-delivery patch comprising a drug-permeable tissue-interfacing surface, a drug-impermeable backing layer, and a drug contained between the tissue-interfacing surface and the backing layer.

20. The system of claim 19, wherein the first plurality of particles comprise tissue abrasive particles.