| abstract |
The invention relates to a portable device (2) for providing vacuum for medical applications, in particular for the vacuum treatment of wounds on a human or animal body, comprising a suction pump (90), which produces vacuum, in a first housing part (4) of the device, a container (10) for accommodating bodily fluids, in particular wound secretions extracted from a wound, wherein the container (10) can be detachably fastened to the first housing part (4) of the device and can be subjected, in the fastened state, to vacuum by the suction pump (90), and wherein a connection (12) is provided on the container (10) for a suction line (82) leading to the body so that vacuum can be communicated between the suction pump (90), the container (10) and the suction line (82) leading to the body, a pressure sensor (94) which is arranged between the container (10) and the suction pump (90) for measuring the pressure in a line section (88), a programmable electronic control device (100) which can control the suction pump (90) by at least taking into account the predefined and/or predefinable parameters and the pressure values measured by the pressure sensor (94). The device is characterized in that the electronic control device (100) is designed in such a manner that it deactivates the suction pump (90) when, during a continuous operation under vacuum, a pressure change rate (Δρ/Δt), which is determined on the basis of the signals of the pressure sensor (94), falls below a predefined threshold value in the direction of decreasing vacuum. |