초록 ▼

A defoaming device for separating foam and bubbles from a liquid, such as blood, is disclosed. The device can be used in conjunction with a medical device, such as a membrane oxygenator, for separating air from blood while minimizing blood contact with the antifoam agent used in the device. The devi

A defoaming device for separating foam and bubbles from a liquid, such as blood, is disclosed. The device can be used in conjunction with a medical device, such as a membrane oxygenator, for separating air from blood while minimizing blood contact with the antifoam agent used in the device. The device includes a reservoir and a filtering material that does not contain any antifoaming agent. This filtering material is positioned in a lower portion of the reservoir to separate foam and bubbles from the liquid. An element containing an antifoaming agent is positioned in the reservoir above the maximum surface fluid level therein and receives the foam and bubbles that rise from the filtering material. Contact of the liquid with the antifoaming agent is substantially avoided.

대표청구항 ▼

A defoaming device for separating foam, macroscopic and microscopic air bubbles from blood and allowing selective exposure of only the foam and bubbles to an antifoaming agent comprising: a reservoir means for containing blood; blood inflow and outflow means communicating with the reservoir means; a

A defoaming device for separating foam, macroscopic and microscopic air bubbles from blood and allowing selective exposure of only the foam and bubbles to an antifoaming agent comprising: a reservoir means for containing blood; blood inflow and outflow means communicating with the reservoir means; a first filtering means in the reservoir means including a lower portion absent an antifoaming agent, the lower portion positioned to contact blood which is introduced through said blood inflow means and to separate foam, macroscopic and microscopic air bubbles therefrom, and an upper portion containing antifoaming agent being positioned at a predetermined height in the reservoir means, which height is above an anticipated maximum surface blood level in the reservoir means, to substantially avoid direct contact with blood at or below said predetermined height; a screening means situated in said reservoir means through which passes blood exiting from the first filtering means for separating microscopic bubbles therefrom; a second filtering means for receiving blood exiting from the screening means; and wherein the upper portion of the first filtering means receives the foam, macroscopic and microscopic bubbles separated from blood as it flows through the first filtering means and screening means.