초록 ▼

A surgical pleural drainage apparatus for draining fluids from the body of a patient is disclosed. The apparatus includes a container with a collection chamber. A suction outlet is provided on the container which is connected to a source of negative pressure and a fluid passageway connects the sucti

A surgical pleural drainage apparatus for draining fluids from the body of a patient is disclosed. The apparatus includes a container with a collection chamber. A suction outlet is provided on the container which is connected to a source of negative pressure and a fluid passageway connects the suction outlet to the collection chamber. A non-liquid one-way valve is provided in the fluid passageway for allowing fluid flow only from the collection chamber to the suction outlet. An air leak indicator is also provided in the passageway to indicate a flow of gases through the passageway and optionally the qualitative quantity of that flow. Preferably, the air leak indicator includes a visible liquid trap through which any gases flow and form bubbles which are visible. The liquid trap is prefilled with glycerine or a like liquid. The amount of negative pressure applied to the collection chamber is controlled by a suction control device. An excess negative pressure relief device and a positive pressure relief device are also provided for the collection chamber. Preferably, a pressure measuring device is provided for measuring the negative pressure in the passageway and a dynamic pressure measuring device is provided for measuring the pressure changes in the collecting chamber during respiration.

대표청구항 ▼

A surgical pleural drainage device for draining fluids from the body of a patient comprising: a container, a collection chamber for fluids formed in said container, a fluid inlet extending from outside said container into the upper end of said collection chamber to provide an unobstructed passageway

A surgical pleural drainage device for draining fluids from the body of a patient comprising: a container, a collection chamber for fluids formed in said container, a fluid inlet extending from outside said container into the upper end of said collection chamber to provide an unobstructed passageway for the free flow of both liquids and gases from the body of a patient into the collection chamber, connection means for connecting said collection chamber to a source of negative pressure to create a negative pressure within said collection chamber and thereby draw fluids into said collection chamber through said fluid inlet, said connection means including a suction outlet mounted on said container to which the source of negative pressure is applied and a passageway disposed adjacent the upper end of the container connecting said suction outlet and said collection chamber, one way resiliently operated valve means provided in said fluid passageway for allowing gases to flow from said collection chamber to said suction outlet and preventing reverse flow of gases from said suction outlet to said collection chamber, trap means for preventing liquid from said collection chamber from passing through said one way valve means, control means provided in said passageway for controlling the amount of negative pressure applied to said collection chamber relative to the negative pressure applied at said suction outlet, an air leak indicating means provided in said passageway for indicating the flow of gases through said passageway including a visible liquid trap through which the gases flow and therein form bubbles, which bubbles serve as visible indicators of flow, and an excess negative pressure relief means for relieving excess negative pressure in said collection chamber which cannot relieve the negative pressure down to atmospheric pressure.