Structures and devices for parenteral drug delivery and...

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/02 (2006.01) A61M 31/00 (2006.01)

Patent

CA 2548307

A structure for and method of manufacture of structures for implantation within the tissue of a mammalian subject are disclosed. These structures can be utilized in applications such as the delivery of therapeutic drugs to the tissue of the subject or the sampling of biofluids for the purposes of diagnosis. In one embodiment of the invention, a rigid structure has defined ingrowth features on a surface intended to contact tissue of the subject and defined passage features which provide a fluid path from the surface intended to contact tissue to another surface. The dimensions of these defined features vary based on the particular application, as the ingrowth features are of a dimension and spacing to promote ingrowth of the surrounding tissue, and the passage features are of a dimension to inhibit the passage through the structure of cells from the surrounding tissue.

Cette invention concerne une structure et un procédé permettant de fabriquer des structures destinées à être implantées dans les tissus d'un sujet mammifère. Ces structures peuvent être utilisées dans des applications telles que l'administration de médicaments thérapeutiques dans les tissus du sujet ou le prélèvement de fluides biologiques à des fins de diagnostic. Dans un mode de réalisation de cette invention, une structure rigide comprend des éléments de croissance interne définis sur une surface destinée à venir au contact des tissus du sujet et des éléments de passage définis qui constituent une voie de fluide entre la surface destinée à venir au contact des tissus et une autre surface. Les dimensions de ces éléments définis varient en fonction de l'application particulière, les éléments de croissance interne présentant une dimension et un espacement visant à promouvoir la croissance interne des tissus voisins, les éléments de passage présentant une dimension visant à inhiber le passage à travers la structure de cellules depuis les tissus voisins.

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