Protein matrix materials, devices and methods of making and using thereof
First Claim
1. A tissue graft comprising one or more biocompatible protein materials, combined with one or more biocompatible solvents, wherein the protein material(s) and biocompatible solvent(s) are formed into a cohesive solid body having a solvent content of about 20% to 80% prior to compression and not having the characteristics of cracking, shattering, breaking or being crosslinked so as to inhibit the cohesive solid body from remaining cohesive unto itself when being formed and the cohesive solid body is compressed at a pressure of about 100 psi to 100,000 psi to remove bulk biocompatible solvent and generate additional intermolecular and intramolecular forces between one or more of the protein material(s) and solvent(s) to form the tissue graft having a solvent content of about 10% to 60%, and wherein the tissue graft provides a scaffold for enhancing cellular remodeling by host tissue.
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Abstract
The present invention relates to protein matrix materials and devices and the methods of making and using protein matrix materials and devices. More specifically the present invention relates to protein matrix materials and devices that may be utilized for various medical applications including, but not limited to, drug delivery devices for the controlled release of pharmacologically active agents, encapsulated or coated stent devices, vessels, tubular grafts, vascular grafts, wound healing devices including protein matrix suture material and meshes, skin/bone/tissue grafts, biocompatible electricity conducting matrices, clear protein matrices, protein matrix adhesion prevention barriers, cell scaffolding and other biocompatible protein matrix devices. Furthermore, the present invention relates to protein matrix materials and devices made by forming a film comprising one or more biodegradable protein materials, one or more biocompatible solvents and optionally one or more pharmacologically active agents. The film is then partially dried, rolled or otherwise shaped, and then compressed to form the desired protein matrix device.
138 Citations
38 Claims
- 1. A tissue graft comprising one or more biocompatible protein materials, combined with one or more biocompatible solvents, wherein the protein material(s) and biocompatible solvent(s) are formed into a cohesive solid body having a solvent content of about 20% to 80% prior to compression and not having the characteristics of cracking, shattering, breaking or being crosslinked so as to inhibit the cohesive solid body from remaining cohesive unto itself when being formed and the cohesive solid body is compressed at a pressure of about 100 psi to 100,000 psi to remove bulk biocompatible solvent and generate additional intermolecular and intramolecular forces between one or more of the protein material(s) and solvent(s) to form the tissue graft having a solvent content of about 10% to 60%, and wherein the tissue graft provides a scaffold for enhancing cellular remodeling by host tissue.
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15. A method of replacing damaged, diseased or missing tissue comprising:
providing a tissue graft comprising one or more biocompatible protein materials, combined with one or more biocompatible solvents and one or more pharmacologically active agents, cells or combinations thereof, wherein the protein material(s), biocompatible solvent(s) and pharmacologically active agent(s), cells or combinations thereof are formed into a cohesive solid body having a solvent content of about 20% to 80% prior to compression and not having the characteristics of cracking, shattering, breaking or being crosslinked so as to inhibit the cohesive solid body from remaining cohesive unto itself when being formed and the cohesive solid body is compressed at a pressure of about 100 psi to 100,000 psi to remove bulk biocompatible solvent and generate additional intermolecular and intramolecular forces between one or more of the protein material(s), solvent(s) and/or active agent(s) to form the tissue graft having a solvent content of about 10% to 60%; and
administering the tissue graft to a part of a patient'"'"'s body that is damaged, diseased or missing, wherein the tissue graft provides a scaffold for enhancing cellular remodeling by host tissue.- View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of making a tissue graft, comprising the steps of:
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(a) preparing a coatable composition comprising one or more biocompatible protein materials and one or more biocompatible solvents; (b) forming the coatable composition into a cohesive solid body having a solvent content of about 20% to 80% prior to compression and not having the characteristics of cracking, shattering, breaking or being crosslinked so as to inhibit the cohesive solid body from remaining cohesive unto itself when being formed; (c) compressing the cohesive solid body at a pressure of about 100 psi to 100,000 psi to remove bulk biocompatible solvent; and (d) forming a tissue graft having a solvent content of about 10% to 60% from a compressed cohesive solid body, wherein the tissue graft provides a scaffold for enhancing cellular remodeling by host tissue. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification