Sealant applicator and method employing impulse clearing

B - Operations – Transporting – 05 – C

Patent

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B05C 9/06 (2006.01) A61B 17/03 (2006.01) A61M 35/00 (2006.01)

Patent

CA 2332326

A sealant applicator suitable for dispensing a co-agulable sealant, for example a two-component fibrin sealant mixed in the applicator, employs impulse clear-ing to remove residual coagulated or coagulating ma-terial from the dispensing pathway (12, 18) and mix-ing chamber, if present. Impulses may be generated by manual application of a clearing member (28, 38) such as a plunger (28, 38) which can enter into the dispens-ing pathway (12, 18) to engage, dislodge and discharge residuals or can generate a gas impulse to impact the residuals to similar effect. A cleaning valve having a clearing port can be operated by movement of the clear-ing member (28, 38) to provide access to the dispensing pathway (12, 18).

Un applicateur approprié pour la distribution d'un fluide de scellement coagulable, par exemple, un adhésif tissulaire fibrineux à deux composants mélangés dans l'applicateur, utilise la désobstruction par impulsion pour éliminer le matériau résiduel coagulé ou coagulant du passage de distribution (12, 18) et de la chambre de mélange, si celle-ci est prévue. Des impulsions peuvent être produites par application manuelle d'un élément de désobstruction (28, 38), tel qu'un piston plongeur (28, 38) pouvant être introduit dans le passage de distribution (12, 18) pour engager, déplacer et évacuer les matériaux résiduels ou pouvant générer une impulsion gazeuse pour impartir aux matériaux résiduels un effet similaire. Une vanne de dégagement présentant un orifice de dégagement peut être mise en action par déplacement de l'élément de désobstruction (28, 38), en vue de fournir un accès au passage de distribution (12, 18).

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