US 12,350,397 B2
Superabsorbent, freeze dried hydrogels for medical applications
Amarpreet S. Sawhney, Lexington, MA (US); Steven L. Bennett, Cheshire, CT (US); Suresh S. Pai, Mountain View, CA (US); Scott R. Sershen, Redwood City, CA (US); and Fred H. Co, Santa Clara, CA (US)
Assigned to Incept LLC, Lexington, MA (US)
Filed by Incept, LLC, Lexington, MA (US)
Filed on Feb. 12, 2021, as Appl. No. 17/174,476.
Application 17/174,476 is a division of application No. 14/327,245, filed on Jul. 9, 2014, granted, now 10,940,231.
Application 14/327,245 is a continuation of application No. 11/465,791, filed on Aug. 18, 2006, granted, now 8,795,709, issued on Aug. 5, 2014.
Claims priority of provisional application 60/743,944, filed on Mar. 29, 2006.
Prior Publication US 2021/0268141 A1, Sep. 2, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61L 24/00 (2006.01); A61L 24/04 (2006.01); A61L 24/10 (2006.01); A61B 17/00 (2006.01)
CPC A61L 24/0031 (2013.01) [A61L 24/046 (2013.01); A61L 24/10 (2013.01); A61B 2017/0065 (2013.01)] 19 Claims
 
1. A method for depositing a material within a patient's body, comprising:
making a freeze dried hydrogel by a process comprising:
forming a mixture by combining precursor components to initiate covalent crosslinking of the precursor components;
freezing the mixture to stop the crosslinking reaction after the covalent crosslinking of the precursor components has begun and before crosslinking of the precursor components is complete; and
freeze drying the mixture to form the freeze dried hydrogel; and
introducing the freeze dried hydrogel into the patient's body.