Material compositions and related systems and methods for...

A - Human Necessities – 61 – K

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A61K 35/12 (2006.01) A61K 47/42 (2006.01) A61L 27/22 (2006.01) A61L 27/38 (2006.01) A61P 9/00 (2006.01) A61M 5/00 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2503973

A medical condition associated with a cardiac structure is treated by injecting an injectable polymer agent into the cardiac structure such that a therapeutic mechanical scaffolding is formed within the cardiac structure itself. In particular, the injectable scaffolding agent is a fibrin glue agent and is injected into regions of damaged myocardium such as ischemic tissue or infarct. LV wall dysfunction may also be treated by injecting the scaffolding agent into the LV wall. Cell therapy may be combined with the injection of fibrin glue or other injectable polymer scaffold agent. The polymeric forms of the agent may be injectable as precursor materials that polymerize as a scaffold in-situ within the cardiac structure. In other modes, polymer agents are injected in order to provide therapeutic angiogenesis, or to induce deposition of cells within the injected area, such as by providing the polymer with fragment E or RDG binding sites, respectively.

Il est possible de traiter une condition médicale associée à une structure cardiaque par l'injection d'un agent polymère injectable dans la structure cardiaque de manière à former un squelette mécanique thérapeutique au sein même de la structure. En particulier, l'agent de formation de squelette injectable est un agent de colle de fibrine et est injecté dans des zones du myocarde endommagé tel que le tissu ischémique ou l'infarctus. Le dysfonctionnement de la paroi du ventricule gauche peut également être traité par l'injection de l'agent de formation de squelette dans la paroi du ventricule gauche. On peut combiner la thérapie cellulaire avec l'injection de la colle de fibrine ou d'un autre agent de squelette polymère. Les formes polymériques de l'agent peuvent être injectables en tant que matériaux précurseurs qui se polymérisent sous la forme d'un squelette in situ au sein de la structure cardiaque. Dans d'autres modes de réalisation, les agents polymères sont injectés afin de fournir une angiogenèse thérapeutique, ou en vue d'induire un dépôt de cellules au sein de la zone injectée, par exemple en fournissant au polymère un fragment E ou des sites de liaison RGD.

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