IP Library › Granted Patent US 10,022,475
Granted Patent B2
US 10,022,475 · App. 15/409,544 · Granted Jul 17, 2018

Body augmentation device

Inventors: Phi Nguyen (Houston, TX); Loc Phan (San Jose, CA); Bao Tran (Saratoga, CA); Thuan Nguyen (Houston, CA); Duy Bui (Ha Noi, VN)
Assignee: Bao Tran
A61L27/52A61F2/0059A61F2/12A61K31/496A61L27/16A61L27/20A61L27/54A61M5/19A61M5/31596C08J3/075C08J3/246C08J3/28A61L2300/406A61L2300/41A61L2400/06A61L2430/04C08J2329/04C08J2405/08
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Quick Facts
Patent No.
US 10,022,475
App. No.
15/409,544
Granted
Jul 17, 2018
Kind
B2
Abstract

Systems and methods are disclosed for body augmentation by mixing hyaluronic acid (HA) with polyvinyl alcohol (PVA) to form an HA-PVA hydrogel; and exposing the HA-PVA hydrogel to one or more freeze-thaw cycles or to an amount of radiation effective to crosslink the HA to the PVA to crosslink the HA to the PVA.

Claims (39)

1. A method for body augmentation, comprising:

storing a non-toxic biocompatible material;

storing a biocompatible polymer having a multi-phase mixture with a predetermined controlled release of selected pharmaceutical substance to modulate soft tissue response to the polymer;

mixing the biocompatible material and polymer to cross-link the mixture by exposing HA-PVA (hyaluronic acid-polyvinyl alcohol) hydrogel to an amount of ionizing radiation providing a radiation dose effective to crosslink the HA to the PVA and providing a mask; and

augmenting soft tissue with the cross-linked mixture.

2. The method of claim 1 , wherein the polymer comprises one of: hyaluronic acid, polyvinyl alcohol, collagens, PEG, hyaluronic acids, celluloses, proteins, saccharides, biodegradable and bioresorbable biocompatible materials.

3. The method of claim 1 , comprising mixing an anti-inflammatory compound or an antiproliferative compound.

4. The method of claim 1 , comprising injecting the cross-linked mixture directly into breast tissue or into a breast implant to augment the soft tissue.

5. A method of making a cross-linked hydrogel comprising:

storing a biocompatible material and storing a biocompatible polymer having a multi-phase mixture with a predetermined controlled release of selected pharmaceutical substance to modulate soft tissue response to the polymer;

mixing hyaluronic acid (HA) with polyvinyl alcohol (PVA) to form an HA-PVA (hyaluronic acid-polyvinyl alcohol) hydrogel; and

exposing the HA-PVA hydrogel to an amount of energy effective to crosslink the HA and the PVA and to sterilize the container content.

6. The method of claim 1 , wherein the exposing comprises performing one or more freeze-thaw cycles to HA-PVA (hyaluronic acid-polyvinyl alcohol) hydrogel.

7. The method of claim 1 , comprising performing one or more freeze-thaw cycles to HA-PVA (hyaluronic acid-polyvinyl alcohol) hydrogel and then autoclaving the HA-PVA hydrogel.

8. The method of claim 1 , comprising first autoclaving the HA-PV hydrogel and then performing one or more freeze-thaw cycles to HA-PVA hydrogel.

9. The method of claim 1 , comprising exposing the HA-PVA hydrogel to sterilize the container content.

10. The method of claim 9 , comprising exposing the irradiated HA-PVA hydrogel to a temperature above the melting point of a PVA crystalline phase to produce a cross-linked hydrogel.

11. The method of claim 9 , wherein the ionizing radiation is X-ray, e-beam, gamma radiation or beta particles.

12. The method of claim 1 , comprising providing an irradiation mask, a step mask, or a gradient mask.

13. The method of claim 9 , comprising performing at least one freeze-thaw cycle to the HA-PVA hydrogel.

14. The method of claim 1 , comprising mixing a slow release anti-inflammatory agent to the HA-PVA hydrogel.

15. The method of claim 1 , comprising:

dissolving the HA-PVA hydrogel in a solvent;

heating the HA-PVA hydrogel to a temperature elevated above the melting point of the PVA and inducing gelation of vinyl polymer at a rate to form crystalline physical associations in the HA-PVA hydrogel;

exposing the physically associated vinyl polymer hydrogel to a dose of radiation effective to produce covalent crosslinks; and

autoclaving the HA-PVA hydrogel to remove physical associations and forming a covalently cross-linked HA-PVA hydrogel.

16. A method, comprising

storing a non-toxic biocompatible material and a biocompatible polymer having a multi-phase mixture with a predetermined controlled release of selected pharmaceutical substance to modulate soft tissue response to the polymer;

mixing the biocompatible material and polymer to cross-link the mixture;

forming a biocompatible cross-linked polymer having an interpenetrating polymer network (IPN) including:

cross-linking a heteropolysaccharide to form a single cross-linked material; and

performing one or more additional cross-linkings on the single cross-linked material to form a multiple cross-linked material,

wherein the multiple cross-linked material has one or more IPN regions resisting biodegradation in a human body than the single cross-linked material and one or more single cross-linked extensions radiating out from the IPN, wherein the combination of the IPN and the extension provide one or more of: biodegradation resistance, soft touch feeling, ease of insertion into the human body and augmenting soft tissue with the cross-linked mixture.

17. The method of claim 1 , comprising dispensing ciproflaxin uniformly throughout the HA-PVA hydrogel.

18. The method of claim 1 , wherein the mixing comprises adding one or more of: an anesthetics, a lidocaine, a compound to reduce or eliminate acute inflammatory reactions, and a composition selected from the group consisting of steroids, corticosteroids, dexamethasone, triamcinolone.

19. The method of claim 16 , comprising:

mixing hyaluronic acid (HA) with polyvinyl alcohol (PVA) to form an HA-PVA hydrogel; and

exposing the HA-PVA hydrogel to one or more freeze-thaw cycles or to an amount of radiation effective to crosslink the HA to the PVA.

20. The method of claim 19 , wherein the radiation comprises X-ray, e-beam, gamma radiation or beta particles.

Continuity (3)
Continuation In Part 14255967 · May 1, 2014
Continuation 14881028 · Oct 12, 2015
Related Publication 20170232148A1 · Aug 17, 2017
Cited By (1)
US 1,084,357