DE202015007868U1 - Ventilation drainage for wounds - Google Patents

Abstract

Ventilation drain (1) for ventilating wounds (12) which are filled with a wound filling (10) and closed with a wound film (9) and in which wound secretion (21) is drawn off by means of a vacuum pad (7) through a vacuum opening (8), characterized in that a ventilation drain (1) equipped with a covered labyrinth (2), with throttle filters (3a, b, c) through a throttle opening (19) to the labyrinth (2) by means of ventilation hole (6) in one, the wound (12) Closing wound film (9), connected to an adhesive layer (15), at a defined vacuum (20) of the throttle filter (3) is closed, while opening the throttle filter (3) opens and through a ventilation hole (6) in the wound film (9) and throttle opening (19) air (11) for ventilation of the wound (12) passes.

Description

The invention relates to a ventilation drain, which is placed with one or more throttle filters in the filling material of a wound and with the adhesive wound covering, contacted at a defined vacuum in the wound area, the necessary air supply in the wound area for suction of wound secretion allows.

Wound dressings have been used for decades for the treatment of wounds. These are usually flexible patches, bandages, wound dressings made of textiles or foams, which rest sterile on the wound site to be treated on the body of the patient.

Out DE 692 29 940 a foam pad suitable for bonding a wound is used. This pad is adapted to the wound dimensionally stable.

in the DD 297 914 The invention relates to a plaster as a quick bandage for wound treatment by targeted delivery of drugs.

In order to enable the immediate delivery of active ingredients in liquid or pasty form in the actual amount required and regardless of the whereabouts of the person to be treated, according to the invention a reservoir is introduced in a sticking plaster, between the covering layer and the upper layer of the compress.

The reservoir can thus be either in the compress or between the compress and the cover layer. The reservoir contains an active ingredient dissolved in a liquid or pasty substance. The material of the reservoir is impermeable to the passage of the active ingredient and the substance in which it is dissolved. By finger pressure, the reservoir is destroyed and the active ingredient soaks the compress.

In the DD 268 397 The invention relates to a process for the preparation of local administration forms for the treatment of skin damage, for example second or third degree burns.

Application forms are preferably patches, gauze bandages or gauze pieces coated or impregnated with a curative composition.

The method is characterized in that 12 to 25% wax, 60 to 88% pharmacologically acceptable oil, 1 to 15% of a cooling ethereal substance and optionally a maximum of 5% with the other components compatible active ingredients mixed together and homogenized, whereupon with the homogeneous mass textile carrier or plastic carrier soaks or sweeps and packaged the so impregnated carrier sterile.

For example, beeswax or wool wax is used as the wax, paraffin, sunflower or castor oil or mygliol or mixtures thereof as oil, camphor or menthol as cooling ethereal substance, and antiseptic or chemotherapeutic agent, preferably antibiotic, as active ingredient.

Furthermore, in the DE 10 2004 022 645 discloses a bioresorbable collagen-based material having a content of a linear polymeric biguanide and / or a water-soluble salt thereof. Preferably, the biguanide is polyhexamethylene biguanide. The bioresorbable material can be used in the form of a wound dressing or as a wound or bone implant. It is extremely compatible and leads to a quick and uncomplicated wound healing with a significantly reduced risk of infection.

In the main claim of DE 20 2004 007 971 U1 a triangular absorbent pad is characterized in that square blanks of gauze with different side lengths, preferably between 9 cm and 15 cm, one or two superposed, are folded over the diagonal, so that an isosceles triangle is formed, from which the lower tip after is turned upside down and turned over at an angle of about 75 degrees to the left so that a pointed bag is formed below, in which the gauze is triangular in parallel planes or "layers", and which is suitable for the tips projecting above, which are to be turned down to accommodate, so that more parallel planes are added or the "Lagigkeit" is increased.

Object of the invention DD 252 950 is to develop a medical wound dressing with resilient compliance, defined gas permeability, protection against bacteria and good lyophil properties.

The medical wound dressing should consist of a front and back of flexible polyurethane foam.

The object is achieved in that an open-cell polyurethane flexible foam film, having a thickness of 1.2 to 3 mm, is melted on a surface without thermal decomposition and with a 10 to 30 times irreversibly compressed flexible polyurethane foam film, having a thickness of 0.1 to 0.4 mm, gas and water vapor permeable is connected.

The invention DD 145 062 relates to a transparent fluid dressing material, in particular for the treatment of wounds and for use in cosmetics, dentistry and for cell cures.

According to the invention, the liquid dressing material is present as a dried, swellable, clear film of a hydrophilic, organic, transparent gel in sheet or ribbon form, which may contain buffer substances, conventional wound care agents, nutrients and / or growth substances, and optionally a line or netlike containing arranged reinforcing agent.

The gel according to the invention consists of a mixture of hydrophilic polymer and at least one gellable high molecular weight substance. It consists for example of a gellable polysaccharide and / or protein or polypeptide and a polymer of a hydrophilic acrylic or methacrylic acid derivative, which was prepared by polymerization in the presence of the polysaccharide and / or protein or polypeptide. In particular, the gel consists of 50 to 90% by weight of polymerized acrylic or methacrylic acid derivative and 50 to 10% by weight of polysaccharide and / or protein.

In addition, a stiff wound cap in the DD 222 497 described.

The wound covers should preferably be used in operating clinics. The range of application is extended by applications in internal diseases, skin diseases, thermal injuries and in experimental surgery. The transparent, lightweight and preferably made of thermoplastics such as polymethyl methacrylate, polyethylene, polystyrene, polyacrylonitrile, polyamides or polyvinyl chloride wounds allow a wound care, the wounds come into contact only with the medium air. Free air access to the wound eliminates a number of technical and economic disadvantages inherent in traditional wound dressings.

The method also has the goal to reduce reservations, which were repeatedly brought to the open wound treatment.

In the DE 199 25 519 describes a wound dressing, which is constructed in layers with absorbent material for the purpose of recording liquid, in which the active ingredient has been incorporated.

The DE 10 2004 001 594 describes a wound dressing with an interior that is filled with liquid and allows a liquid wound care.

A bioresorbable collagen-based wound dressing having a content of a linear, polymeric biguanide and / or a water-soluble salt is disclosed in U.S. Pat DE 10 2004 022 645 described.

in the GB 20 2006 004 622.4 An injection possibility is described by means of perforated hollow profiles in conjunction with an overlying absorbent layer.

This absorbent layer is not only coated with active ingredient.

By using a laminated textile layer and a suction layer, the connection of both layers is very expensive.

The cutting options for the respective wound shape are not given.

PCT application no. GB 95/01983 ( WO 96/05873 ) describes a porous pad which is permeable to wound-in fluids, a comprehensive device for promoting healing of wounds, a dressing for covering the wound and for providing an airtight seal around the wound, a pad a drainage hose connecting with a suction pump so that a negative pressure can be applied to the wound to draw fluids therefrom and a canister to collect the fluids sucked from the wound.

In the DE 694 25 881 is described a wound treatment under reduced pressure.

The DE 692 24 847 T2 describes a device for treating tissue damage.

For ventilation of wound dressings, double-lumen drains are used, which control the air supply to the wound in a time interval by means of a mechanical control, so that the vacuum process for the suction of wound exudate is reactivated.

The DE 20 2009 013 208 U1 describes a vacuum valve with a vertical flow direction for opening the air supply in adhesive casings, especially in medical adhesive pads for wound sealing. Here, at a defined vacuum, the air passage opening for venting the wound in the adhesive film is closed by the valve, while the vacuum opens the valve opens and passes through an air passage opening, ventilation hole and filter air for ventilation of the wound.

The disadvantage of the wound dressings described is that from a wound surface size 6-7 cm the necessary air supply to activate the vacuum process is insufficient. An additional mechanical air supply with complex construction is required.

Furthermore, a disadvantage of adhering the vacuum valve to the adhesive wound film is that the ventilation between wound filling and wound film takes place and a direct wound base ventilation, the u. a. does not take place to relax the compressed wound filling.

The present invention has for its object to provide a wound dressing for the treatment of surface wounds with the help of vacuum, which allows using a valve mechanism without equipment the necessary air supply at a defined vacuum at the wound base and does not hinder the vacuum process for the suction of wound secretions.

This object is solved by the features of the claim. Advantageous embodiments are covered by the subordinate claims.

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

Show it:

1 A first embodiment of a ventilation drainage

2 A second embodiment of an adhesive wound dressing with a ventilation drain

3 a third embodiment of a ventilation drainage.

LIST OF REFERENCE NUMBERS

1

ventilation drain

2

labyrinth

3

a), b), c) throttle filter

4

Color ring: a) blue, b) green, c) yellow

5

perforation

6

vent hole

7

vacuum pad

8th

vacuum port

9

wound film

10

wound fill

11

air

12

wound

13

protector

14

anfasser

15

adhesive layer

16

cut

17

perforation

18

adhesive area

19

throttle opening

20

vacuum

21

wound secretion

22

short ventilation drain

The aeration drain ( 1 ) is gem. 1 in the wound ( 12 ) with a wound filling ( 10 ), mainly open-celled foam.

It consists of a shell with labyrinth ( 2 ).

The cover is in the perforation area ( 17 ) with perforations ( 5 ) Mistake.

In the gluing area ( 18 ) are both shell surfaces with an adhesive layer ( 15 ) and a protective film ( 13 ) with handles ( 14 ) equipped.

The upper side is always the wound film ( 9 ).

The lower side is filled with the wound filling ( 10 ) after removing the protective film ( 13 ) with the adhesive layer ( 15 ) attached.

The peculiarity of the upper side lies in the introduction of throttle openings ( 19 ).

Over each throttle opening ( 19 ) is a throttle filter ( 3a , b, c) fastened with different throttle strength. Each throttle filter ( 3a , b, c) is with a color ring ( 4 ) marked blue, green, yellow. The user therefore has three differently sized throttle valves to choose from.

By means of cut ( 16 ), the length can be tailored according to the wound indication.

In the 2 the application of the aeration system ( 1 ) in one with wound filling ( 10 ) filled wound ( 12 ).

The aeration drain ( 1 ) was gem. Cut ( 16 ) per wound size and in the wound filling ( 10 ) in the wound ( 12 ).

After removing the protective film ( 13 ) from the adhesive layer ( 15 ), the lower side without colored ring on the wound filling ( 10 ) glued. The protective foil ( 13 ) is removed from the upper side. The wound film ( 9 ) gets over the wound ( 12 ) and via the aeration drain ( 1 ) glued.

Depending on the choke request, in the wound film over the selected throttle filter ( 3a , b, c) a ventilation hole ( 6 ).

The wound film ( 9 ) is filled with a vacuum ( 8th ) Mistake. Above this, a vacuum bath ( 7 ) with vacuum ( 20 ) glued.

The wound ( 12 ) is filtered with filtered, germ-free air ( 11 ) and thus in the rhythm of the wound ventilation by means of vacuum ( 20 ) Wound secretions ( 21 ) sucked off.

Only one ventilation drain ( 1 ) as a short aeration drain ( 22 ) show the 3 ,

The application offers three possible applications with regard to throttle filter ( 3a , b, c), depending on the location of the ventilation hole ( 6 ) above the respective throttle filter ( 3 ) in the wound film ( 9 ).

This short aeration drain ( 22 ) works in principle like a well-known throttle valve.

He can only with a throttle filter ( 3 ) be equipped.

Special features are the placement on the wound filling ( 10 ) and the fixation with the wound film ( 9 ). Then the ventilation hole ( 6 ) in the wound film ( 9 ) incorporated.

When using three throttle filters ( 3 ) offers the respective color ring ( 4a , b, c) the orientation. Each color ring documents the ventilation performance desired by the user.

For three butterfly valves, glue the first ventilation hole ( 6 ) and the opening of a second or third ventilation hole ( 6 ) variable adaptation of the wound ventilation by the choice of another throttle valve possible.

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 69229940 [0003]
• DD 297914 [0004]
• DD 268397 [0007]
• DE 102004022645 [0011, 0024]
• DE 202004007971 U1 [0012]
• DD 252950 [0013]
• DD 145062 [0016]
• DD 222497 [0019]
• DE 19925519 [0022]
• DE 102004001594 [0023]
• GB 202006004622 [0025]
• GB 95/01983 [0029]
• WO 96/05873 [0029]
• DE 69425881 [0030]
• DE 69224847 T2 [0031]
• DE 202009013208 U1 [0033]

Claims (11)

Ventilation drain ( 1 ) for the ventilation of wounds ( 12 ) filled with a wound filling ( 10 ) and with a wound film ( 9 ) are closed and where by means of vacuum pad ( 7 ) through a vacuum opening ( 8th ) Wound secretions ( 21 ) is sucked off, characterized in that a ventilation drain ( 1 ), with a wrapped labyrinth ( 2 ), with throttle filters ( 3a , b, c,) through a throttle opening ( 19 ) to the labyrinth ( 2 ) by means of ventilation hole ( 6 ) in one, the wound ( 12 ) Closing wound film ( 9 ), combined with an adhesive layer ( 15 ), at a defined vacuum ( 20 ) the throttle filter ( 3 ) is closed, while in vacuum increase the throttle filter ( 3 ) and through a ventilation hole ( 6 ) in the wound film ( 9 ) and throttle opening ( 19 ) Air ( 11 ) for ventilation of the wound ( 12 ). Ventilation drain according to claim 1, characterized in that the throttle filter ( 3a , b, c) with color rings ( 4a , b, c) are marked. Ventilation drain according to claim 1, characterized in that by two adhesive layers ( 15 ) the connection with the wound filling ( 10 ) and the wound film ( 9 ). Ventilation drain according to claim 1, characterized in that the throttle filter ( 3a , b, c) have different throttle qualities. Ventilation drain according to claim 1, characterized in that by means of cut ( 16 ) the drain length is cut. Ventilation drain according to claim 1, characterized in that only a short ventilation drain ( 22 ) without perforation area ( 17 ) is applied. Ventilation drain according to claim 1, characterized in that the throttle filter ( 3a , b, c) are bacterial and viral filters. Ventilation drain according to claim 1, characterized in that the sheath around the labyrinth ( 2 ) with perforation ( 5 ) is provided. Ventilation drain according to claim 1, characterized in that the labyrinth ( 2 ) consists of double microperforated film. Ventilation drain according to claim 1, characterized in that the labyrinth ( 2 ) is a flow mat. Ventilation drain according to claim 1, characterized in that the adhesive layer ( 15 ) with a protective film ( 13 ) is equipped.

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