REACTIVE MULTI-ARM POLYMERS HAVING BRANCHED END GROUPS

    公开(公告)号:US20210060183A1

    公开(公告)日:2021-03-04

    申请号:US16999871

    申请日:2020-08-21

    Abstract: In some aspects, the present disclosure pertains to a polymer that comprises a plurality of polymer arms, wherein a first portion of the polymer arms comprise a reactive end group and wherein a second portion of the polymer arms comprise a branched end group that comprise a plurality of covalently attached diagnostic and/or therapeutic groups, which may be, for example, radiocontrast groups or radioactive groups. Other aspects pertain to a system that comprises (a) a first composition comprising such a polymer and (b) a second composition comprising a multifunctional compound that comprises reactive functional groups that are reactive with the reactive end group of the multi-arm polymer. Still other aspects pertain to a crosslinked reaction product of (a) such a polymer and (b) a multifunctional compound that comprises functional groups that are reactive with the reactive end group of the multi-arm polymer.

    POLYSACCHARIDES HAVING IMPROVED RADIOCONTRAST PROPERTIES

    公开(公告)号:US20220204655A1

    公开(公告)日:2022-06-30

    申请号:US17556408

    申请日:2021-12-20

    Abstract: The present disclosure pertains to iodinated polysaccharide compounds that comprise a polysaccharide backbone that comprises a plurality of carboxyl groups and a plurality of iodinated side groups. The present disclosure also pertains iodinated polysaccharide compounds in which at least a portion of carboxyl groups that are present in a carboxyl-containing polysaccharide chain are functionalized with a plurality of iodinated side groups. Other aspects of the present disclosure pertain to methods of forming iodinated polysaccharide compounds, medical compositions comprising iodinated polysaccharide compounds, medical procedures comprising introducing such medical compositions into or between tissue of a patient, and medical kits that comprise such medical compositions.

    RADIOPAQUE MULTI-ARMED POLYMERS AND COMPOSITIONS, SYSTEMS AND METHODS PERTAINING TO THE SAME

    公开(公告)号:US20210062004A1

    公开(公告)日:2021-03-04

    申请号:US16999841

    申请日:2020-08-21

    Abstract: In some aspects, the present disclosure pertains to a polymer that comprises a plurality of polymeric arms, wherein a first portion of the polymeric arms each comprises a reactive end group and wherein a second portion of the polymeric arms each comprises a radiopaque aromatic moiety comprising a monocyclic or multicyclic aromatic structure having a plurality of radiopaque functional groups and a plurality of hydrophilic functional groups. In some aspects, the present disclosure pertains to systems comprising (a) a first composition comprising such a radiopaque polymer and (b) a second composition comprising a multifunctional compound that comprises reactive functional groups that are reactive with the reactive end group. In some aspects, the present disclosure pertains to crosslinked reaction products of (a) such a radiopaque polymer and (b) a multifunctional compound that comprises reactive functional groups that are reactive with the reactive end group.

    IODINE LABELED HYDROGELS AND PRECURSORS THEREOF WITH IMPROVED RADIOPACITY

    公开(公告)号:US20230127824A1

    公开(公告)日:2023-04-27

    申请号:US17972007

    申请日:2022-10-24

    Abstract: In some embodiments, the present disclosure pertains to systems for forming a hydrogel that comprise (a) a first composition that comprises a polyiodinated polyamino compound and (b) a second composition that comprises a reactive multi-arm polymer that comprises a plurality of hydrophilic polymer arms having reactive end groups that are reactive with the amino groups of the polyiodinated polyamino compound. In some embodiments, the present disclosure pertains to medical hydrogels that are formed by reacting a polyiodinated polyamino compound and a reactive multi-arm polymer that comprises a plurality of hydrophilic polymer arms having reactive end groups that are reactive with the amino groups of the polyiodinated polyamino compound. In some embodiments, the present disclosure pertains to methods of making polyiodinated polyamino compounds.

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