Device for providing a vacuum for medical vacuum wound treatment

• US 20120289913A1
• Filed: 05/09/2012
• Published: 11/15/2012
• Est. Priority Date: 05/13/2011
• Status: Abandoned Application

• Current Assignee: Paul Hartmann AG (Schwenk Zement KG)
• Original Assignee: Paul Hartmann AG (Schwenk Zement KG)
• Inventors: Eckstein, Axel, Hofstetter, Juergen
• Application Number:
  US13/467,088
• Publication Number:
  US 20120289913A1
• Time in Patent Office: Days
• US Class Current: 604/305
• CPC Class Codes: A61M 1/60 Containers for suction drainage, adapted to be used with an external suction source containers not adapted for subjection to vacuum A61M1/69
• CPC Class Codes: A61M 1/73 comprising sensors or indicators for physical values
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/92 with liquid supply means
• CPC Class Codes: A61M 1/96 Suction control thereof
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 1/984 portable on the body
• CPC Class Codes: A61M 2205/14 Detection of the presence or absence of a tube, a connector or a container in an apparatus
• CPC Class Codes: A61M 2205/16 with back-up system in case of failure
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/35 Communication
• CPC Class Codes: A61M 2205/8206 battery-operated

Abstract

A portable device (2) for providing a vacuum for medical vacuum treatment of wounds has a suction pump (90), which generates a vacuum and is located in a housing part (4) of the device as well as a container (10) for receiving body fluids. A programmable electronic control device (100) can drive the suction pump (90), taking into consideration predetermined parameters. A sensor device (120) is provided by means of which the electronic control device (100) can detect when the container (10) is removed from the housing part (4) during vacuum regulation operation, wherein the sensor device (120) emits a signal, on the basis of which the electronic control device (100) detects removal of the container (10) and the electronic control device (100) is designed in such a fashion that it deactivates the suction pump (90) in this case.

Claims

1-18. -18. (canceled)

19. A portable device providing a vacuum for medical vacuum treatment of wounds on a body of a person or animal, the device comprising:

a first housing part;

a suction pump disposed in said first housing part, said suction pump generating a vacuum;

a container for receiving body fluids and wound exudate extracted from a wound by suction, said container structured for detachable mounting to said first housing part and for evacuation by said suction pump in a mounted state thereof;

a suction line leading to the body;

a connection cooperating with said container and said suction line for establishing vacuum communication among said suction pump, said container and said suction line;

a pressure sensor;

a programmable electronic control device communicating with said suction pump and said pressure sensor to drive said suction pump, thereby at least taking into consideration predetermined and/or predeterminable parameters as well as pressure values measured by said pressure sensor; and

a sensor device communicating with said electronic control device, said sensor device facilitating detection, by said electronic control device, of removal of said container from said first housing part during vacuum regulation operation,

wherein said sensor device emits a signal, on a basis of which said electronic control device detects removal of said container and initiates deactivation of said suction pump.

20. The device of claim 19, wherein said sensor device has an actuator that is pretensioned towards said container and is mechanically actuated by said container, wherein said actuator is displaced against a pretensioning force when said container is arranged.

21. The device of claim 20, wherein said actuator mechanically operates a switch.

22. The device of claim 19, wherein said sensor device comprises an electric contact sensor.

23. The device of claim 19, wherein said sensor device is magnetically or electromagnetically activated.

24. The device of claim 19, wherein said sensor device is optoelectronically activated.

25. The device of claim 19, wherein said sensor device is designed to be capacitively activated in that a change of a capacitively influenced variable is measured, said variable changing when said container is removed from said first housing part during vacuum regulation operation.

26. The device of claim 19, wherein said sensor device comprises a pressure sensor disposed between said container and said suction pump and structured for measuring a pressure in a line section, said electronic control device being structured to deactivate said suction pump when, starting from ongoing vacuum regulation operation, a pressure change rate (Δ

p/Δ

t) towards decreasing vacuum determined by signals of said pressure sensor exceeds a predetermined threshold value.

27. The device of claim 26, wherein said threshold value is 40 mmHg/s or more.

28. The device of claim 19, further comprising an output or display device structured for generating a signal which visually or acoustically communicates removal of said container.

29. The device of claim 19, further comprising an output or display device structured for wireless transmission of a signal to an external receiver, said signal communicating removal of said container to an external receiver.

30. The device of claim 19, wherein said sensor device and said electronic control device are designed in such a fashion that arrangement of said container in an intended position thereof on said first housing part is determined and, starting from a previous deactivation of said suction pump, a previously adjusted pressure regulation operation is restarted.

31. The device of claim 19, further comprising a venting valve controlled by said electronic control device and a venting line connecting said venting valve to a wound area to vent the wound area with external air.

32. The device of claim 19, further comprising an element, controlled by said electronic control device, for supplying a rinsing liquid or another fluid to a wound area via a rinsing line.

33. The device of claim 32, wherein said electronic control device is designed in such a fashion that, upon deactivation of said suction pump, said electronic control device also deactivates said element for supplying a rinsing liquid or another fluid.

34. The device of claim 19, wherein said electronic control device is structured in such a fashion that it does not deactivate said suction pump upon correct or incorrect detection of a full state of said container, rather continues predetermined vacuum regulation operation.

35. The device of claim 19, wherein said electronic control device is designed in such a fashion that, in case of a vacuum increase or reduction of absolute pressure in a line section between said container and said suction pump, said control device does not deactivate said suction pump, rather continues predetermined vacuum regulation operation.

37. A method for operating the device of claim 19, wherein removal of said container from said first housing part during ongoing vacuum regulation operation is detected using the sensor device and the electronic control device, in which case the electronic control device deactivates the suction pump.

38. The device of claim 35, wherein the vacuum increase or the reduction in absolute pressure is in response to a rising fill level of the container.