Method and apparatus for applying tissue sealant

Details Method and apparatus for applying tissue sealant Method and apparatus for applying tissue sealant

A - Human Necessities

61

M

A61M 5/19 (2006.01) A61B 17/00 (2006.01) A61M 35/00 (2006.01) A61M 5/315 (2006.01)

Patent

CA 2244697

This invention is a device and method for applying fibrinogen based tissue sealant to connect tissues or organ parts, seal wounds, or stop bleeding by mixing fibrin or fibrinogen with blood clot promoting coagulation factors. The device includes two cylindrical compartments (1, 8) for separately containing the fluid components of the sealant preparation, which are simultaneously displaced from the compartments by commonly depressible plungers (6, 9), which may be depressed directly or using common mechanism (3) for controlling the rate of dispensing fluid. The cylindrical compartments have the same or different cross-sectional areas and are arranged concentrically or side by side. The device further includes means (4) for merging the two fluid components within an outer sleeve housing (25), an inner needle (22) which contain conduits for the flow of the two fluid sealant components as they are expressed from their respective compartments. Also disclosed are means of filling the two compartments for mixing the fluid components, and for atomizing the effluent sealant fluid stream.

L'invention concerne un dispositif et un procédé pour la mise en place d'un matériau de colmatage entre les tissus à base de fibrinogène, permettant de réassembler les tissus ou autres parties organiques, de refermer les blessures, ou encore d'interrompre les saignements par mélange de fibrine ou de fibrinogène aux facteurs qui contribuent à la coagulation sanguine. Le dispositif comprend deux compartiments cylindriques (1, 8) pour la séparation des fluides constitutifs de la préparation de colmatage, simultanément exprimés des compartiments par des pistons pouvant être enfoncés ensemble (6, 9) directement ou par le biais d'un mécanisme commun (3) permettant de réguler le débit des fluides. Les compartiments cylindriques ont une section transversale identique ou différente et sont disposés de manière concentrique ou côte à côte. En outre, le dispositif comprend un système (4) pour le mélange des deux fluides constitutifs qui est placé dans un manchon extérieur (25), une aiguille interne (22) qui achemine par ses conduits les deux fluides constitutifs de colmatage au moment de leur sortie des compartiments respectifs. On décrit par ailleurs un système de remplissage des deux compartiments pour mélanger les fluides constitutifs et pour atomiser le courant de fluide de colmatage qui s'écoule.

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