초록 ▼

A thoracic cavity drainage device includes a first vessel having a plurality of chambers one of which is a regulated drainage chamber, and a separate transfer vessel which receives fluid collected in the drainage chamber of the first vessel. The chambers of both vessels are interconnected in a serie

A thoracic cavity drainage device includes a first vessel having a plurality of chambers one of which is a regulated drainage chamber, and a separate transfer vessel which receives fluid collected in the drainage chamber of the first vessel. The chambers of both vessels are interconnected in a series by fluid passageways which cooperate to maintain a uniform range of suction in the drainage chamber while preventing passage of water into the drainage chamber and permitting a different level of suction in the transfer vessel. This operation is effective despite relatively large pressure and vacuum impulses caused by stripping of drainage lines, patient coughing, and the like, and despite discrete changes in the physical configuration of the system caused by disconnection of the transfer vessel, connection of the transfer vessel to an infusion line or the opening or closing of fluid lines and ports. A novel transfer vessel empties the drainage device and provides gravity reinfusion of the collected fluids. A mechanism within the transfer vessel provides an effective suction without vacuum connections or pressure regulating adjustments.

대표청구항 ▼

A drain device for draining blood and fluids from the thoracic cavity of a patient, such device comprising a multichamber vessel of a total volume comparable to the pleural volume of a patient, said device including a manometer for establishing a predetermined suction level, and wherein the multicha

A drain device for draining blood and fluids from the thoracic cavity of a patient, such device comprising a multichamber vessel of a total volume comparable to the pleural volume of a patient, said device including a manometer for establishing a predetermined suction level, and wherein the multichamber vessel includes (i) a collection chamber having an inlet port for connection to the patient, an outlet, and a pooling region, and (ii) a water seal U-column having an inlet port connected to said collection chamber outlet, and an outlet at the manometer to normally sustain is predetermined suctional draw in said collection chamber toward said manometer, and wherein said water seal inlet port is spaced from said water seal column along a path extending within said multichamber vessel and including a plurality of baffles spaced along a vertical path over said water seal column for reversing the direction of water rising in said column, and has a dimension sufficiently small to modulate abrupt pressure variations in said collection chamber caused by patient spasms, thereby effectively preventing back flow from said water seal to said collection chamber, whereby blood collected in said collection chamber is suitable for reinfusion in the patient.