IP Library Granted Patent US 9,724,305
Granted Patent B2
US 9,724,305 · App. 15/198,081 · Granted Aug 8, 2017

Nanoparticle fabrication methods, systems, and materials for fabricating artificial red blood cells

Inventors: Joseph M. DeSimone (Chapel Hill, NC); Edward T. Samulski (Chapel Hill, NC)
Assignee: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
A61K9/1641A61K9/0026A61K9/5146A61K9/5153A61K31/337A61K31/713A61K35/18A61K38/1703A61K38/42A61K47/34A61K51/1244A61L27/18A61K9/16A61L2400/12Y10S514/832Y10T428/2982
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Quick Facts
Patent No.
US 9,724,305
App. No.
15/198,081
Granted
Aug 8, 2017
Kind
B2
Abstract

A plurality of artificial red blood cell particles includes each particle of the plurality being substantially monodisperse and each particle having a largest common linear dimension of about 5 μm to about 10 μm. The particles can also have a modulus configured such that a particle of the plurality of particles can pass through a tube having an inner diameter of less than about 3 μm.

Claims (28)

1. A synthetic particle, comprising:

a molded synthetic polymer particle having:

a largest linear dimension of between about 5 μm to about 10 μm; and,

a modulus of less than about 1 MPa, wherein the particle can pass through an opening of less than about 3 μm.

2. The particle of claim 1 , wherein the synthetic polymer comprises a biocompatible polymer.

3. The particle of claim 1 , wherein the synthetic polymer comprises poly(ethylene glycol) or poly(ethylene glycol) diacrylate.

4. The particle of claim 1 , wherein the particle further comprises a cargo selected from the group consisting of a therapeutic agent, a biologic, a diagnostic agent, hemoglobin, and an imaging agent.

5. The particle of claim 1 , wherein the opening is an orifice or an opening of a tube or a lumen.

6. The particle of claim 1 , wherein the particle further comprises an engineered shape characteristic comprising an arc or vertex imparted on the particle by the mold.

7. A drug delivery particle, comprising:

a molded synthetic polymer particle comprising a cargo and having:

a largest linear dimension less than about 10 μm; and,

a modulus of less than about 1 MPa, wherein the particle can pass through an opening of less than about 60% the largest linear dimension of the particle.

8. The drug delivery particle of claim 7 , wherein the particle can pass through an opening of less than about 37.5% the largest linear dimension of the particle.

9. The drug delivery particle of claim 7 , wherein the particle can pass through an opening of less than about 30% the largest linear dimension of the particle.

10. The drug delivery particle of claim 7 , wherein the synthetic polymer comprises a biocompatible polymer.

11. The drug delivery particle of claim 7 , wherein the synthetic polymer comprises poly(ethylene glycol) or poly(ethylene glycol) diacrylate.

12. The drug delivery particle of claim 7 , wherein the cargo is selected from the group consisting of a therapeutic agent, a biologic, a diagnostic agent, hemoglobin, and an imaging agent.

13. The drug delivery particle of claim 7 , wherein the opening is an orifice or an opening of a tube or a lumen.

14. The drug delivery particle of claim 7 , wherein the particle further comprises an engineered shape characteristic comprising an arc or vertex imparted on the particle by the mold.

15. A polymeric medical device, comprising:

a molded polymer having:

a largest linear dimension less than about 10 μm; and,

a modulus of less than about 1 MPa, wherein the device can pass through an opening less than about 60% the largest linear dimension of the device.

16. The polymeric medical device of claim 15 , wherein the device can pass through an opening of less than about 37.5% the largest linear dimension of the device.

17. The polymeric medical device of claim 15 , wherein the synthetic polymer comprises poly(ethylene glycol) or poly(ethylene glycol) diacrylate.

18. The polymeric medical device of claim 15 , wherein the device further comprises a cargo selected from the group consisting of a therapeutic agent, a biologic, a diagnostic agent, hemoglobin, and an imaging agent.

19. The polymeric medical device of claim 15 , wherein the opening is an orifice or an opening of a tube or a lumen.

Assignments (4)
CONFIRMATORY LICENSE Recorded Apr 11, 2018
From: UNIVERSITY OF NORTH CAROLINA, CHAPEL HILL
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 045889/0714 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 15, 2017
From: NORTH CAROLINA STATE UNIVERSITY
To: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
Reel/Frame 041583/0133 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 15, 2017
From: SAMULSKI, EDWARD T.
To: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
Reel/Frame 041583/0202 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 15, 2017
From: DESIMONE, JOSEPH M.
To: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL; NORTH CAROLINA STATE UNIVERSITY
Reel/Frame 041583/0218 →
Continuity (4)
Continuation 13904517 · May 29, 2013
Continuation 12374182
Provisional Application 60833736 · Jul 27, 2006
Related Publication 20160303049A1 · Oct 20, 2016