Pliable medical device and method of use

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/52 (2006.01) A61F 2/28 (2006.01) A61L 27/12 (2006.01) A61L 27/16 (2006.01) A61L 27/20 (2006.01) A61L 27/54 (2006.01) A61L 27/56 (2006.01) A61F 2/44 (2006.01) A61L 2/00 (2006.01) A61L 2/07 (2006.01)

Patent

CA 2633551

A firm but pliable medical device for use as a bone graft substitute or bone graft extender retains its shape without the requirement of a containment device, such as a syringe. Because the device is solid, it is easy to locate or position in-vivo and, in the moist environment of the body, it will hold its shape well, for an extended time. Because the lyophilized pliable medical device is porous, it adsorbs blood and other beneficial cells containing body fluids, such as bone marrow, contributing to its superior bone repair efficacy in comparison to an analogous putty that has not been lyophilized. In addition these lyophilized pliable medical devices are easier to terminally steam sterilize than the analogous putty because there is no moisture present to boil and "blow-out" of the containment device (syringe). The glycerin that is present in the formulation lends pliability but has a low vapor pressure.

La présente invention concerne un dispositif médical solide mais souple destiné à être utilisé comme substitut de greffe osseuse ou comme rallonge de greffe osseuse maintenant sa forme sans nécessiter un dispositif de confinement, tel qu'une seringue. Etant donné que le dispositif est plein, il est facile à localiser ou positionner in vivo et, dans l'environnement humide de l'organisme, il va bien maintenir sa forme, pour une période prolongée. Grâce au caractère poreux du dispositif médical souple lyophilisé, il adsorbe le sang et autres fluides corporels contenant des cellules bénéfiques, tels que la moelle osseuse, ce qui contribue à son efficacité de réparation osseuse supérieure par rapport à un mastic analogue qui n'a pas été lyophilisé. En outre, ces dispositifs médicaux lyophilisés sont plus faciles à stériliser à la vapeur au niveau de leur extrémité que le mastic analogue étant donné qu'il n'y a pas d'humidité pour entraîner l'ébullition et la purge du dispositif de confinement (seringue). La glycérine qui est présente dans la formulation procure une souplesse mais présente une faible pression de vapeur.

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