System and method for enhancing particle delivery to biological tissue
First Claim
1. A device for delivery of particles into biological tissue comprising:
- at least one conduit;
a propellant source configured to release a propellant into the conduit;
a source of first particles configured to release first particles into the conduit;
a source of second particles configured to release second particles into the conduit, the second particles comprising a functional material intended to interact with the biological tissue and having a density less than a density of the first particles; and
a focusing mechanism configured to focus the first and second particles into a focused particle stream using a sheath fluid,wherein the propellant source and the conduit are configured to propel the particles in a collimated stream toward the biological tissue, the first particles configured to penetrate the biological tissue to create micropores that increase porosity of the biological tissue and the second particles configured to enter the porous biological tissue.
6 Assignments
0 Petitions
Accused Products
Abstract
A device for delivery of particles into biological tissue includes at least one conduit and a propellant source configured to release a propellant into the conduit. A source of first particles is configured to release first particles into the conduit. A source of second particles is configured to release second particles into the conduit. The second particles comprise a functional material intended to interact with the biological tissue and having a density less than a density of the first particles. The propellant source and the conduit are configured to propel the particles in a collimated stream toward the biological tissue. The first particles are configured to penetrate the biological tissue to create micropores that increase porosity of the biological tissue and the second particles configured to enter the porous biological tissue.
13 Citations
19 Claims
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1. A device for delivery of particles into biological tissue comprising:
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at least one conduit; a propellant source configured to release a propellant into the conduit; a source of first particles configured to release first particles into the conduit; a source of second particles configured to release second particles into the conduit, the second particles comprising a functional material intended to interact with the biological tissue and having a density less than a density of the first particles; and a focusing mechanism configured to focus the first and second particles into a focused particle stream using a sheath fluid, wherein the propellant source and the conduit are configured to propel the particles in a collimated stream toward the biological tissue, the first particles configured to penetrate the biological tissue to create micropores that increase porosity of the biological tissue and the second particles configured to enter the porous biological tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for delivery of particles into biological tissue comprising:
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propelling first particles in a collimated stream toward the biological tissue; propelling second particles in a collimated stream toward the biological tissue, the second particles comprising a functional material intended to interact with the biological tissue and having a density less than a density of the first particles; creating micropores in the biological material by penetration of the first particles into the biological tissue, the creation of the micropores increasing porosity of the biological tissue; and depositing the second particles into the porous biological tissue. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification