US 7,682,336 B2Granted

Gas assisted endoscopic applicator system

AssigneeMicromedics, Inc.

InventorsJon E. Hoogenakker, Bradley D. Robb

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Abstract

An apparatus for making and administering two non-homogenous liquids to target tissue includes a spray comprising two syringes for containing the first and second non-homogenous liquid where the syringes are adapted to be removably coupled to an applicator. The applicator includes a pair of elongated tubes each having a tubular sheath at a proximal end, a distal end and a lumen in which the pair of elongated tubes are disposed. The apparatus includes a regulator module having an inlet port adapted for connection to a source of gas under pressure and a gas outlet port adopted for connection to the gas inlet port of the sheet. A vent gas inlet port is adapted for connection to a vent port of an endoscopic cannula where the regulator vents a quantity of gas from the endoscopic cannula approximately equal to a quantity of gas introduced at the gas inlet port of the sheet.

Claims16

Dependent claims

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.

2 more elements

An apparatus for mixing and administering bio-materials to target tissue in an endoscopic procedure, the apparatus comprising:

an applicator comprising:
a sheath having a lumen extending between a proximal end and a distal end;
a gas inlet port at the proximal end of the sheath, the gas inlet port being in fluid communication with the lumen;
a first elongated tube deposed within the lumen and adapted for fluid communication with a first syringe at the proximal end of the sheath;
and
a second elongated tube deposed within the lumen and adapted for fluid communication with a second syringe at the proximal end of the sheath;
and
a regulator module comprising:
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 applicator;
and
a vent gas inlet port adapted for connection to a vent port of an endoscopic cannula, wherein the regulator module is operative to vent gas from the endoscopic cannula to the atmosphere at a volumetric flow rate that is approximately equal to a volumetric flow rate of gas introduced through the gas inlet port of the applicator;
a pneumatic control valve coupled to the regulator module and adapted to control the flow of gas from the regulator input port to the gas inlet port of the applicator;
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.

11 more elements

Dependencies are inferred from the claim text.