DE202013007576U1 - Device for wound treatment - Google Patents

Abstract

Device for wound treatment, in particular vacuum wound treatment, characterized in that a part of a wound cover plaster (12) which hides the wound surface completely airtight to the outside is provided with at least one suction opening (15) located above the wound surface, on which a port (1) is provided, which has at least one inner ventilation hose (5), which from the suction hose (10) through an opening (19) and a seal (9) out, with a filter housing (4) and filter (3) is connected, and the filter housing (4) by means of flap (2) can be closed.

Description

The above-outlined treatment of such wounds under negative pressure is a method practiced for many years, which positively influences the healing of deep and large-area wounds by permanent wound stimulation.

This type of vacuum wound treatment is, for example, in DE 694 25 881 T3 . DE 692 29 940 T2 and DE 692 24 847 T3 described in detail, which is why reference should be made here only.

In addition, there are a variety of other solutions, which should be listed here only as an example, because they concern more distant technical solutions. That's how it is US 6,695,824 B2 a wound dressing cover for outer flat wounds consisting of two layers, the first layer being applied directly to the wound and the second layer having an outward-acting moisture barrier. Between the layers mentioned several hose-like supply lines are provided which ensure a moisture supply to the wound.

For use in the context of wound treatment of deep, poorly healing wounds with the aid of the technique of vacuum wound treatment, however, the abovementioned wound dressing cover is not designed and also unsuitable, because a vacuum-tight lead-out of the sometimes multiple hoses from the wound area is practically impossible.

The same applies to a variety of devices for the extraction of wound secretions from body cavities, such. In EP 1 764 127 A1 described.

Furthermore, in the WO 2008/131895 A1 Described a surface drainage, the aforementioned Abdichtproblem by a laterally removed under the wound covering the wound plasters led out flat Ableitungsschwanz.

From the DE 698 25 767 T2 and DE 698 33 579 T2 Suction heads for wound treatment and a combination with a surgical drape are known in that a port with adhesive tape and suction tube is glued to a wound over the wound film. The disadvantage here is the hard port, which presses upon application of a vacuum on the wound and causes pain.

Other applications also use such ports, which differ only by other shapes and materials as well as different suction channels. Again, the hard port is a disadvantage to the patient.

Furthermore, the use of the hard ports for small wounds with respect to air circulation in the wound area is unsuitable because a small adhesive surface is not adequately ventilated beyond the wound area. This obstructs the aspiration of the wound secretion.

Only through a special pump, which allows ventilation of the wound through the suction tube, the suction process of wound secretion can be maintained. Such special pumps with special additional ventilation of the wound area are, for example, in WO 2008/039314 A1 . US 2007/0219532 A1 and US Pat. No. 7,857,806 B2 described. Although these solve the problem of a continuous or discontinuous wound ventilation, while maintaining a required negative pressure in the vacuum wound treatment, but require their costly acquisition.

Also, for example, the need for a second additional ventilation connection in the wound area is complex and inconvenient.

Furthermore, in the invention PCT / EN 2011/0018 66 a patch provided with a throttling effect on a Wundabdeckpflaster.

The present invention has for its object to provide a multivalent usable device for vacuum wound treatment, which allows sufficient ventilation of the wound even when using commercially customary vacuum pumps when required in the wound area required negative pressure, without the need for complex control means for the vacuum pump and a manufactured thereafter Wundabdeckpflaster.

The object is solved by the characterizing features of the first and eleventh claim. Advantageous embodiments are the subject of the dependent claims.

The essence of the invention consists in that a port is equipped with a thin ventilation hose which is placed in the suction hose, sealingly provided from the suction hose wall with a filter which consists of at least one filter disk, in particular bacterial filter disk.

By selecting the porosity of the filter disk, for which a wide variety are available on the market, and defined eligibility of the diameter of the corresponding passage openings in the ventilation hose can be adjusted to the vacuum treatment method used and adjusted to the vacuum pumps used adjustable throttling effects of the proposed device.

If the proposed device is integrated into a single port, there are no additional steps for the surgeon to attach it.

The main advantage of the proposed device is that no changes have to be made to the vacuum pump technology already in use and the already proven vacuum pumping method. Here, however, a targeted and time-staggered throttle effect in a wide vacuum range is specifiable adjustable.

Due to the fact that ventilation of the wound via the pump itself is eliminated, the risk of germ infections by the pumping paths is no longer present.

The invention will be explained in more detail below with reference to specific embodiments.

They show schematically:

1 An embodiment using a port in which the invention is incorporated in the port

2 an embodiment in application of the invention with port and wound dressing.

In the 1 the invention is in use with a port ( 1 ).

Through the suction hose wall of the suction hose ( 10 ), the ventilation hose ( 5 ) with perforation ( 21 ) through the labyrinth ( 6 ) and with the labyrinth ( 6 ) by a fastening ( 7 ) arrested.

Through the breakthrough opening ( 19 ) of the suction hose ( 10 ), the ventilation hose ( 5 ) with a seal ( 9 ) sealed.

A filter housing ( 4 ) with an inserted filter ( 3 ) is connected to the ventilation hose ( 5 ) connected.

By opening the flap ( 2 ) can individually after a suction ventilation of the wound ( 11 ) and secretion ( 13 ) are sucked off.

Through the filter ( 3 ) and through the ventilation throttle ( 8th ), the possible suction is controlled in time.

In the 2 FIG. 1 shows a first possible embodiment, in which, over a schematically represented wound (FIG. 11 ), as is conventional in the prior art, a wound cover plaster ( 12 ) is attached. This wound cover plaster ( 12 ) seals the wound ( 11 ) hermetically.

Vacuum hoses, fillings of the wound ( 11 ) with gauze, wound filling ( 14 ) etc. are not shown here and in the further for reasons of clarity.

According to the present invention, the wound cover plaster ( 12 ) in this example a suction opening ( 15 ), on which by means of Portbefestigung ( 18 ) a port ( 1 ) is attached. In the port ( 1 ) are the ventilation hose ( 5 ) and the suction hose ( 10 ), so that at vacuum ( 20 ) the secretion ( 13 ) from the wound ( 11 ) can be sucked off.

By means of adhesive layer ( 16 ) is the wound cover plaster ( 12 ) on the skin ( 17 ) attached.

Finally, the effect of the proposed device in operation will be discussed briefly.

Upon application of vacuum, the wound filling, not shown here, is compressed in the wound, secretion flows out of the wound via the suction tubes shown as long as there is air circulation in the wound.

According to the state of the art, in particular for small wounds, air circulation is only possible if the wound is ventilated via the pump. If a pump is used without wound ventilation, after a short time, an inadmissible and painful negative pressure is created so that the pump is switched off automatically. This already applies to wound diameters in the order of 50-70 mm.

It would now be necessary, without being able to continue pumping out wound secretion, to wait until the wound is ventilated by the wound dressing plaster itself.

Even more damaging would be the ventilation via the suction hoses or pump hoses, as these are germ-laden.

If, on the other hand, the device according to the invention is used, venting of the wound takes place after 15 to 30 seconds, depending on the filter and ventilation throttle. This ensures that, depending on the method of the vacuum wound treatment used, a negative pressure of 200 mbar is never exceeded even for a short time.

The device according to the invention is inexpensive to produce and in all known Vacuum wound treatment (also for pumps in intervals) can be used.

LIST OF REFERENCE NUMBERS

1

port

2

flap

3

filter

4

filter housing

5

ventilation tube

6

labyrinth

7

attachment

8th

aeration reactor

9

poetry

10

suction

11

wound

12

Wound covering paving

13

secretion

14

wound fill

15

suction opening

16

adhesive layer

17

skin

18

port fixing

19

Through opening

20

vacuum

21

perforation

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 69425881 T3 [0002]
• DE 69229940 T2 [0002]
• DE 69224847 T3 [0002]
• US 6695824 B2 [0003]
• EP 1764127 A1 [0005]
• WO 2008/131895 A1 [0006]
• DE 69825767 T2 [0007]
• DE 69833579 T2 [0007]
• WO 2008/039314 A1 [0010]
• US 2007/0219532 A1 [0010]
• US 7857806 B2 [0010]
• DE 2011/001866 [0012]

Claims (7)

Device for wound treatment, in particular vacuum wound treatment, characterized in that a part of a wound cover plaster ( 12 ), which hides the wound surface completely airtight to the outside, with at least one suction opening lying above the wound surface ( 15 ), on which a port ( 1 ) is provided, the at least one inner ventilation hose ( 5 ), which from the suction hose ( 10 ) through a breakthrough opening ( 19 ) and a seal ( 9 ), with a filter housing ( 4 ) and filters ( 3 ), and the filter housing ( 4 ) by means of flap ( 2 ) is closable. Apparatus according to claim 1, characterized in that the ventilation hose ( 5 ) Part of a port ( 1 ). Apparatus according to claim 1, characterized in that the ventilation hose ( 5 ) a ventilation throttle ( 8th ) in diameter. Device according to claim 1, characterized in that the filter ( 3 ) in the filter housing ( 4 ) is interchangeable. Device according to one of the preceding claims, characterized in that the porosity of the filter ( 3 ), their number and thickness and the variable design of the ventilation throttle ( 8th ) are set variably adjustable according to the coming to use vacuum treatment process. Apparatus according to claim 1, characterized in that a plurality of ventilation hoses ( 5 ) in the port ( 1 ) are inserted and through the suction hose ( 10 ) or directly through the port ( 1 ) go outside. Apparatus according to claim 1, characterized in that the ventilation hose ( 5 ) with perforations ( 21 ) is provided.

Images