System for aspirating fluids from a body using negative pressure
Inventors
Assignees
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Publication Number
US-10076592-B2
Publication Date
2018-09-18
Expiration Date
Abstract
A system for aspirating fluids from a body by means of negative pressure has: a drainage line for removing the fluid from the body, a fluid collection container connected to the drainage line and used to collect the aspirated fluid, a pump by which the negative pressure used to aspirate the fluid is generated in the drainage line, and an auxiliary line whose end near the body is in fluidic communication with an end, near the body, of the drainage line. In the system, an approximately closed circuit is present or can be generated which interconnects this pump, the auxiliary line, the drainage line and the fluid collection container and through which air or a liquid can be pumped, wherein the auxiliary line is usable for flushing the drainage line. This system prevents and removes obstructions in the drainage line and also permits a relatively accurate measurement of the negative pressure in the body cavity.
Core Innovation
The invention relates to a system for aspirating fluids from a human or animal body by means of negative pressure, including a drainage line for removing the fluid from the body, a fluid collection container connected to the drainage line for collecting the aspirated fluid, and a pump for generating the negative pressure in the drainage line to aspirate the fluid. An auxiliary line is provided with an end near the body that is in fluidic communication with an end near the body of the drainage line.
An approximately closed circuit is present or can be generated, interconnecting the pump, auxiliary line, drainage line and fluid collection container, such that air or a liquid can be pumped from the pump through the auxiliary line and the drainage line into the fluid collection container in order to clean the drainage line. The auxiliary line is usable for flushing the drainage hose, and the drainage line and auxiliary line end in a common catheter or in a common connector piece.
A pressure sensor is arranged between pump and fluid collection container, measuring the pressure in the drainage line. By measuring the pressure in the drainage line during flushing, obstruction detection is enabled via pressure rise, and the system provides pressure measurement in the body cavity after flushing.
Claims Coverage
Independent claim clm-00001 defines a negative-pressure aspiration system with three inventive features: an auxiliary-line flushing circuit, a common catheter or common connector piece arrangement, and a pressure sensor arranged between the pump and the fluid collection container.
Auxiliary line for flushing via approximately closed circuit
An auxiliary line whose end near the body is in fluidic communication with an end, near the body, of the drainage line, wherein an approximately closed circuit is present or can be generated that interconnects the pump, the auxiliary line, the drainage line and the fluid collection container and through which air or a liquid can be pumped from the pump through the auxiliary line and the drainage line into the fluid collection container to clean the drainage line, with the auxiliary line usable for flushing the drainage hose.
Common catheter or common connector piece ends
The drainage line and the auxiliary line end in a common catheter or in a common connector piece.
Pressure sensor between pump and fluid collection container
A pressure sensor arranged between pump and fluid collection container, measuring the pressure in the drainage line.
The claim coverage centers on a negative-pressure aspiration system that includes an auxiliary flushing line configured to form or generate an approximately closed circuit with the pump, drainage line, and collection container to pump air or liquid for cleaning the drainage line, with the drainage and auxiliary lines terminating in a common catheter or connector piece and with pressure sensing arranged between the pump and the fluid collection container.
Stated Advantages
Cleans the drainage line by flushing using the auxiliary line.
Enables obstruction detection via pressure rise during flushing.
Documented Applications
Wound drainage.
Chest drainage.
Heart drainage.
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