Abstract: A medical device is provided that encloses a wound and promotes wound drainage by suction. The device includes an enclosure to be placed over a wound, adhesively connected to the skin around the wound by a flange. Gauze type packing cylinders can be placed in the wound, and suction is provided either by a bulb type pump, or by a pair of regulators. When regulators are used, one alternates the suction that it provides, and the other is continuous, such that the level of suction is periodically varied. The suction facilitates the transfer of liquid from the wound to the packing cylinders and from the packing out of the enclosure. A leak detector is optionally provided.

Abstract: A container is provided that is disposable, for first collecting blood delivered from a patient, preferably by a vacuum draw of blood into a container, and then the blood in the container is treated. The treatment is provided by an at least partial a back-and-forth or reciprocating motion of blood along membranes, such that filtrate components of the blood pass through the membrane walls and are collected, whereby retentate components of the blood are retained, with the back-and-forth motion being provided by a substantially constant vacuum draw, that provides a pumping action by a diaphragm pump. A replenishment liquid is automatically added, substantially proportional to the amount of filtrate components of the blood that are withdrawn. The membranes are protected by a device which removes body fat or other potentially harmful materials.

Abstract: A container is provided that is disposable, for first collecting blood delivered from a patient, preferably by means of a vacuum draw of blood into a container, and then the blood in the container is treated. The treatment is provided by an at least partial a back-and-forth or reciprocating motion of blood along membranes, such that filtrate components of the blood pass through the membrane walls and are collected, whereby retentate components of the blood are retained, with the back-and-forth motion being provided by means of a substantially constant vacuum draw, that provides a pumping action by means of a diaphragm pump. A replenishment liquid is automatically added, substantially proportional to the amount of filtrate components of the blood that are withdrawn. The membranes are protected by a means for removing body fats or other potentially harmful materials.