| 摘要 |
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).
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