Patent ID: 7682336
Filing Date: 2010-03-23
Classification: A61B,A61M

Abstract:
1. Apparatus for mixing and administering two non-homogeneous liquids to target tissue in an endoscopic procedure, comprising: (a) a spray set comprising two syringes for containing first and second non-homogeneous liquids, the two syringes adapted to be removably coupled to an applicator, said applicator including a pair of elongated tubes, each having a proximal end for attachment to the two syringes and a distal end, the pair of elongated tubes contained within a tubular sheath having a proximal end, a distal end and lumen in which the pair of elongated tubes are disposed and with a replaceable spray tip attachable to the distal end of the sheath and a gas inlet port at the proximal end of the sheath in fluid communication with the lumen thereof; and (b) a regulator module having a regulator input port adapted for connection to a source of gas under pressure, a gas outlet port adapted for connection to the gas inlet port of the sheath and a vent gas inlet port adapted for connection to a vent port of an endoscopic cannula, the regulator module being operative to vent a quantity of gas from the endoscopic cannula to the atmosphere, the quantity of vented gas being approximately equal to a quantity of gas introduced through the gas inlet port of the sheath; a pneumatic control valve coupled to the regulator for selectively permitting and preventing flow gas from the regulator input port to the gas inlet port of the sheath; a pilot-controlled, two-position, five-way pneumatic valve coupled in circuit with the pneumatic control valve for simultaneously turning on a flow of gas to the gas inlet port at the proximal end of the sheath and flowing gas from the vent port of the endoscopic cannula to the atmosphere.