DE102010014010A1 - Wound care article adapted to different flow rates of the wound exudate - Google Patents

Abstract

The present invention relates to a wound care article adapted to different flow rates of the wound exudate.

Description

The present application relates to a wound care article adapted to different flow rates of the wound exudate.

The goal is to design a new wound care article that adjusts the flow rate of the exudate to the needs of each wound. The wound care article should preferably be equipped with SORBION PLUS (wound distance mesh). Also, two flat sides forming the shell, as with SANA, may consist of SORBION PLUS.

The wound care article has at least one layer (or block) of rubber, silicone rubber or other hydrophobic perforated material. The material may be porous or non-porous. There may be at least one layer of a porous and at least one further layer of a non-porous material. Furthermore, the use of hyaluronic acid, e.g. B. in powder form, provided.

The inner material may consist of at least one layer of air foil (with air bubbles), wherein perforations are provided between the air bubbles, which also have warming properties. The air foil may also be at least partially thermally bonded to the wall facing away from the wound wall. Also, a loose arrangement of the air foil with or without perforations comes into question.

As non-porous materials can, for. B. metal foils, also perforated. The metal foils may be laminated to another material (eg foam rubber).

The thermal insulating properties of the wound care article can also be achieved by at least one layer of staple fiber cotton nonwoven fabric. The cotton staple fibers have a length of 2 to 30 mm, are "twisted", d. H. not straight and are provided with axial holes (hollow fiber). Therefore, are suitable for a very fluffy arrangement, eg. For example, between two PP nonwoven sheets (such as the sleeve of the SORBION SACHET). This cotton fleece can also be sprayed onto a wall and glued there.

Furthermore, the inner life may have different stiffness. For example: inhomogeneous material, material of different thicknesses, different layers, imprints in the selected area etc. A tamponade with a wound spacer grid (eg: SORBION PLUS) can have a microfiber core, a catheter or suction valve.

If a layer of Polyurtehan (PUR) foam (layer) is placed on the SORBION PLUS (without sticking) and the negative pressure is generated, the smooth upper side of the SORBION PLUS lays tight against the wound, with the PUR foam sticking out; H. an air cushion is created between these materials. This may be because the adhesive force of the smooth upper surface of the SORBION PLUS with the wound surface is greater than the force generated by the negative pressure.

The inner life can be different "channeled" or branched. A hole (channel) may have a cascade or cup-shaped wall. The channel can also be branched off, as it is z. B. is shown on the sketch.

characters

Show it:

1 a pivoting flap introduced into the perforated PUR foam, in a section through two inner layers of the wound care article which are connected to one another in a planar manner;

2 a section AA according to 1 ;

3 Detail of an inner layer of the wound care article in the area of a cup-shaped hole, in a section;

4 two solid inner layers of solid plastic, with visible hole and channels, in one cut;

5 the channels diverted from the hole according to 4 in plan view of the interconnected inner layers;

6 an arrangement of the channels after removing an upper inner layer;

7 a section of a primary dressing with rectangular pivoting flaps, in plan view of its flat side;

8th an enlarged detail of a slot with swivel flaps, in plan view of its flat side;

9 a section BB according to 8th ;

10 a wound care article with an inner layer of foam and with primary dressing, before the onset of negative pressure;

11 the wound care article according to 10 after the onset of negative pressure;

12 another embodiment of the branched channels, in the silicone foam;

13 a wound care article with a shell and with an inner layer of perforated air foil, in a section;

14 another wound care article, with an inner layer of an airlaid mat, in a cut;

15 another wound care article, with covered inner layer of perforated plastic, in a section;

16 Detail of a perforated bubble wrap, in plan view on its flat side.

In 1 is a covered inner layer 1 a wound care article shown, consisting of two interconnected layers 1.1 . 1.2 consists of which the location 1.1 as "upper", ie sore-away and the other position 1.2 may be termed "lower," sore-faced. The cover made of liquid-permeable polypropylene fleece is with dashed line (reference number 2 ) indicated. A through hole 3 includes a round, elastic swing flap 4 whose position is opposite the hole 3 depends on the amount, consistency and flow rate of the wound exudate. The inner layer has a plurality of holes 3 and hinged flaps 4 on.

As the 2 shows, takes the swing flap 4 only a part, in terms of area about half of the hole cross-section away. The swing flap 4 goes into an annular, foil-like insert 5 over, which in turn turns into a round, flat seat 6 is placed. The seat 6 is at the bottom location 1.2 , concentric with the hole 3 incorporated. Such an arrangement of the insert 5 ensures a secure hold for those inside the hole 3 located pivoting flap 4 ,

In a further embodiment, not shown, the pivoting flap has an area which is only slightly smaller than the hole cross section, such as the throttle valve of an internal combustion engine.

The layers 1.1 . 1.2 are made of solid, suitable for medical purposes latex. Optionally, within the enclosure 2 at least one flat absorption body (not shown) may be used, which is optionally mixed with superabsorbent substance and with powdered hyaluronic acid (hyaluronate). The hyaluronate can also be added to the latex. The hyaluronate promotes the healing process, accelerates cell proliferation and binds significant amounts of fluid.

The 3 shows a massive inner layer 7 of silicone rubber, having a plurality of cup-shaped holes 8th (In figure is just a hole 8th shown). For the inner layer, a hot crosslinked (HTV) silicone rubber was selected, containing - advantageously - organic peroxides for crosslinking. The material has a density of 0.45 g / cm ³ .

The 4 shows an inner layer 9 , consisting of an upper, wound-away position 9.1 and a lower layer 9.2 into which a channel system 10 is installed. As material for the layers 9.1 . 9.2 a finely structured, cross-linked polyethylene foam of hypoallergenic properties has been chosen. The PE foam is closed-cell and non-absorbent, therefore, an additional, superabsorbent absorbent body is provided, which is arranged within a common shell (not shown).

The channel system 10 consists of a through hole 11 and four from the hole 11 branched off, crosswise (cf. 5 ) opposite the hole running channels 12.1 . 12.2 . 12.3 . 12.4 Starting from the hole, first along a surface 14 the lower layer 9.2 and then perpendicular to the surface. The 6 represents the arrangement of the channels after removing the upper layer 9.1 There are four in the material of the lower layer 9.2 shaped, elongated grooves 13.1 . 13.2 . 13.3 and 13.4 to see that to the channel system 10 belong.

Another channel system (reference number 15 ) show the 12 , Here is the material of an inner layer 18 an equally continuous, but branched hole 16 incorporated. To the hole 16 close lateral, obliquely arranged channels 17.1 . 17.2 at. As material for the inner layer 18 is provided with fine-pored nylon foam.

Another way of controlling the flow results 7 who have a foil-like primary dressing 19 shows. The primary association 19 ("Wunddistanzgitter") consists of a pliable, thin film section 20 made of polyethylene, in the present case with a large number of peripheral, round perforations 21 and centrally arranged, mutually parallel notches pairs 22 is provided. Every nick-pair 22 consisting of two mutually parallel incisions forms two rectangular pivoting flaps 23.1 . 23.2 (see. 8th ) and an intervening, equally rectangular hole 24 which may increase as a result of the flow of wound exudate (cf. 9 ). All perforations 21 and hinged flaps 23.1 . 23.2 are punched out and therefore even.

The 10 and 11 show a foil-like, peripheral with a wound 26 bonded wound cover 25 , one between the wound cover 25 and the wound 26 lying inner layer 27 and a primary association 28 who in WO 2007/118652 the applicant has been described.

The primary association 28 is with its smooth surface 29 placed on the wound, leaving its crater-shaped perforations 30 towards wound cover 25 demonstrate. The primary association 28 lies on the wound in such a way that between its smooth surface and the wound at least a small, free space 33 (see. 10 ) has remained.

The wound cover 25 is with a suction head, not shown, and with a suction hose 31 with valve 32 Mistake.

If the negative pressure is used (cf. 11 ), the wound spacer grid settles on the surface of the wound 26 supple and full surface and sticks there. This is achieved by the adhesion of the smooth surface 29 of the wound distance grid is slightly larger than the force generated by the negative pressure. Between the inner layer 27 and the wound spacer grid creates an air cushion 34 (see. 11 ).

The full-surface coverage of the wound through the wound distance grid allows its hemostatic properties to fully exploit. Wound healing accelerates.

The primary association 28 respectively. 19 may be enriched with preferably pure titanium dioxide and other hemostatic and wound healing promoting substances known per se.

The 13 . 14 . 15 and 16 show, inter alia, a bubble wrap 35 , which is used in the wound care articles shown there. In order to ensure the breathability or permeability of such a bubble wrap for the wound exudate, are between the air bubbles 36 lying perforations 37 (see. 16 ) intended.

In 13 is a prefabricated, planar, simple wound care article 50 shown a wrapped section 38 , the bubble wrap 35 having. The serving 2 consists of an upper wound cover 39 made of PP fleece and the lower, wound-facing, already described primary dressing 28 (Wound spacer grids). The task of bubble wrap 35 is to keep the wound area warm for a long time.

In 14 is a wound care article 60 shown. According to 14 is the bubble wrap 35 with the upper PP fleece (wound cover 39 ) glued all over in such a way that the air bubbles 36 pointing down (towards the wound). A lower shell wall 40 consists of a PP fleece film 41 and with the PP nonwoven foil 41 thermally bonded primary dressing 28 (see detail Z, 14 ). Between the upper wound cover 39 and the lower shell wall 40 is still a middle shell wall 42 made of PP fleece. The two shell walls 40 . 42 include an inner layer 43 in the form of an airlaid mat with superabsorbent substances. The wound care article 60 can be glued to the wound. For this purpose is a circumferential adhesive strip 44 with a removable protective strip 45 intended.

In 15 is a wound care article 70 shown on the wound over the tape 44 is stickable. The wound care article 70 has an inner wrapper 46 made of PP fleece and an outer shell 47 on. The outer shell 47 is made up of an upper shell wall 48 and the lower primary bandage 28 together. The upper shell wall 48 again consists of an outer PP nonwoven foil 49 and the one with the PP nonwoven foil 49 flat, thermally bonded bubble wrap 35 ,

The inner cladding 46 includes a perforated inner layer 51 made of PUR foam. Optional is a with 52 indicated vacuum system (dashed lines, 15 ) intended.

Should the outer PP nonwoven foil 49 replaced by an airtight wound cover (not shown), would result in an upper sheath wall 48 with double air cushioning.

LIST OF REFERENCE NUMBERS

1

inner layer

1.1

upper layer

1.2

lower position

2

wrapping

3

hole

4

swiveling flap

5

inlay

6

Seat

7

inner layer

8th

hole

9

inner layer

9.1, 9.2

location

10

channel system

11

hole

12.1 ... 12.4

channel

13.1 ... 13.4

groove

14

surface

15

channel system

16

hole

17.1, 17.2

channel

18

inner layer

19

primary dressing

20

section

21

perforation

22

Incisions pair

23.1, 23.2

swiveling flap

24

hole

25

wound dressing

26

wound

27

inner layer

28

primary dressing

29

surface

30

perforation

31

suction

32

Valve

33

room

34

bubble

35

Bubble Wrap

36

bubble

37

perforation

38

section

39

upper shell wall

40

lower shell wall

41

PP non-woven fabric

42

middle shell wall

43

inner layer

44

tape

45

protective strip

46

inner cladding

47

outer shell

48

upper shell wall

49

PP non-woven fabric

50

Wound care

51

inner layer

60

Wound care

70

Wound care

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

• WO 2007/118652 [0036]

Claims (1)

Wound care article adapted to different flow rates of wound exudate.

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