Dehydrated hydrogel precursor-based, tissue adherent compositions and methods of use
AssigneeIncept, LLC
InventorsAmarpreet S. Sawhney, Peter G. Edelman
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Abstract
Compositions and methods are provided for forming tissue-adherent hydrogels using substantially dry precursors. The dehydrated precursors are premixed prior to in situ therapy and utilize naturally-occurring body fluids as an aqueous environment that initiates transformation, which causes dissolution and nearly simultaneous crosslinking of the precursors, thus forming an insoluble hydrogel implant. The dehydrated precursor-based hydrogels may be used as sealants for fluid leaks from tissue, as adherent drug delivery depots, as means for augmenting and/or supporting tissue, and as means for serving a variety of other useful medical and surgical purposes.
Claims34
A hydrogel system for in situ therapy comprising an applicator associated with at least two substantially dry hydrogel precursors for delivery to a common location, the dry hydrogel precursors being water soluble and having functional groups for forming chemical crosslinks with each other at physiological pH to form a hydrogel in situ upon exposure to an aqueous fluid from a physiological environment.
A method of forming a dehydrated precursor-based water-insoluble hydrogel medical implant in situ comprising:
- providing at least two substantially dry hydrogel precursors that are water soluble and include functional groups that make chemical crosslinks to each other to form the water-insoluble hydrogel medical implant when mixed together in an aqueous environment at physiological PH;
- delivering the hydrogel precursors to an implantation site in situ in a patient;
- and
- exposing the precursors to aqueous physiological fluids at physiological pH at the implantation site.
A method of forming hydrogel particulates comprising:
- providing a hydrogel;
- removing water from the hydrogel;
- pulverizing the hydrogel to particulates of controlled size;
- and
- treating the particulates to provide synthetic organic functional groups on a surface of the particulates, the functional groups configured to form chemical crosslinks with tissue and/or blood components.
Dependencies are inferred from the claim text.