Use of an addition-cured, metal-catalyzed silicone to compress and / or soften a scar.

Abstract

The invention relates to the use of an addition-crosslinked, metal-catalyzed silicone for compressing and softening a scar, wherein the addition-crosslinked, metal-catalyzed silicone is applied directly to the scar and / or a skin surface.

Description

[0001] The invention relates to a use of an addition-crosslinked, metal-catalyzed silicone for compressing and / or softening a scar.

[0002] After surgeries, injuries, and / or burns, scars often remain as fibrous replacement tissue at the end of wound healing. In addition to aesthetic impairments, especially with scars on visible skin, scars also cause other adverse effects such as pain, itching, restricted mobility, and / or joint misalignment. Excessive scars are also often perceived as disturbing.

[0003] Scar treatment options include special scar creams that are applied several times a day, or compression bandages that are worn for months on large injuries. Self-adhesive scar plasters are also available to loosen and flatten hardened scars. These scar plasters are designed for short-term use. Due to their high adhesive strength, scar plasters quickly become dirty and stick to themselves.

[0004] In addition to the harder heat-curing (HTV) silicone rubbers, room-temperature-curing (RTV) silicone rubbers are also known. In the first group (RTV-1), room-temperature-curing silicones, the acetate systems of the crosslinker release acetic acid during curing, which is irritating to the skin.

[0005] Scar plasters or sheets made of hot-cured silicone are of limited use for scar treatment due to their higher Shore hardness. These can lead to undesirable pressure sores not only at the edges of the scar plaster, but also across the entire surface. Furthermore, such HTV scar plasters are too rigid and inflexible due to their hardness for cross-joint application and / or curved skin surfaces. RTV putty silicones have a high Shore hardness, and these putty compounds continue to harden over time. Because putty silicone becomes porous and cracks, it cannot be adequately disinfected during use.

[0006] The use of silicone sheets without textile fabric is also known. This has the disadvantage that the high-temperature cured silicone adheres to the compression garment, which can lead to unwanted friction and even wound formation on the scar. Another disadvantage of hard, high-temperature cured silicone is the formation of air pockets, which leads to increased perspiration on the treated skin and thus frequently to unwanted maceration of the skin and fungal growth.

[0007] It is also known to sew silicone, for example in the form of silicone film, into compression garments. The disadvantage of this is that the silicone acts as a brake when putting on the compression garment, meaning the wearer often cannot put it on alone. Even with help from a second person, putting on the compression garment with the sewn-in silicone can be very painful and can lead, for example, to damage or even loss of a fresh skin graft. Due to the stickiness of the sewn-in silicone and the braking effect when putting on the compression garment, precise positioning of the silicone on the scar is very difficult and time-consuming. In addition, the seams of the sewn-in silicone can rub against the scar and / or the surrounding skin.

[0008] The object of the invention is to improve the state of the art.

[0009] The object is achieved by using an addition-crosslinked, metal-catalyzed silicone for compressing and / or softening a scar with the features according to claim 1. Further advantageous forms of use are described in the subclaims.

[0010] The use of addition-cured, metal-catalyzed silicone ensures long-term stability in scar treatment, as the addition-cured, metal-catalyzed silicone remains permanently flexible and / or dimensionally stable and, unlike conventional RTV putty silicones, does not cure over time. A particularly advantageous feature is that the addition-cured, metal-catalyzed silicone, while slightly adhesive, is not self-adhesive and / or does not require a special adhesive. Because the addition-cured, metal-catalyzed silicone exhibits slightly adhesive properties, the scar is loosened and softened. Consequently, the scar's mobility is improved, which, among other things, prevents restricted movement.Due to the use of addition-cured, metal-catalyzed silicone, sufficient perspiration occurs on and / or at the scar and / or surrounding skin surface in contact with the silicone, softening the scar area. However, perspiration is not excessive compared to conventional scar patches with HTV silicone, thus preventing maceration and fungal growth.

[0011] Furthermore, the use of addition-cured, metal-catalyzed silicone ensures effective disinfection with chemical disinfectants and temperature resistance up to 100°C, thus meeting the high hygiene requirements during use. The addition-cured, metal-catalyzed silicone is advantageously waterproof, allowing daily showering and / or washing during use. Furthermore, addition-cured, metal-catalyzed silicone has been tested for skin irritation according to ISO 10993-10 and is classified as safe. The advantage of using addition-cured, metal-catalyzed silicone is that acetic acid is not released as occurs with state-of-the-art scar plasters, thus preventing skin irritation.Thus, the addition-cured, metal-catalyzed silicone applied to the scar can be worn permanently for several months and / or for several hours daily without causing any damage to the skin.

[0012] A key concept of the invention is based on the targeted use of an addition-crosslinked, metal-catalyzed silicone for scar treatment. The adhesive properties of the addition-crosslinked, metal-catalyzed silicone loosen and soften the scar, and this silicone, in conjunction with compression, flattens the scar. Due to its adhesive but non-sticky properties, this permanently flexible and dimensionally stable addition-crosslinked, metal-catalyzed silicone is specifically placed on the scar and thus optimally positioned. Due to its material properties, optimal skin conditions in the area of ​​the scar are present for scar treatment. It is particularly advantageous that the addition-crosslinked, metal-catalyzed silicone is used without any additional adhesive.

[0013] The addition-crosslinked, metal-catalyzed silicone is, in particular, a so-called RTV-2 silicone rubber and thus a two-component silicone rubber. The addition-crosslinked, metal-catalyzed silicone is, in particular, produced using a silicone base as the first component and silicone with a metal catalyst as the second component. The first and / or second component can also contain a crosslinker and / or hardener. For example, a mixture of silicic acid esters, such as ethyl silicate, and / or an organotin compound can be used as the crosslinker.

[0014] For production, the two components of the addition-crosslinked, metal-catalyzed silicone are mixed in a ratio of 1:1 by weight or volume and cure completely at room temperature with negligible shrinkage within a few hours. The shrinkage is in particular < 0.1%. The addition-crosslinked, metal-catalyzed silicone has in particular a Shore hardness in a range of 00-10 to 00-50, preferably in a range of 00-20 to 00-30. The elongation at break of the addition-crosslinked, metal-catalyzed silicone is in particular in a range of 800 to 1,000%, preferably in a range of 845 to 900%. The tear strength of the addition-crosslinked, metal-catalyzed silicone is in particular in a range of 3.92 N / mm to 13.38 N / mm, preferably in a range of 5.35 N / mm to 6.78 N / mm.

[0015] By bonding the addition-crosslinked, metal-catalyzed silicone to a carrier material, in particular by permanently bonding the addition-crosslinked, metal-catalyzed silicone to the carrier material without an adhesive, the silicone is stabilized during use and its tearing and adhesion to compression garments or compression bandages are prevented. The carrier material is in particular a textile fabric, such as polyamide and / or elastane. The textile carrier material can in particular comprise natural fibers, chemical fibers, and / or fiber blends. The addition-crosslinked, metal-catalyzed silicone is in particular directly bonded to the carrier material, but without any additional bonding agent (such as an adhesive).Because the carrier material prevents the silicone from adhering to the compression garment and / or a compression bandage, unwanted friction is prevented, which could otherwise lead to wound formation on the scar.

[0016] The fact that a scar treatment pad can contain the addition-crosslinked, metal-catalyzed silicone provides, on the one hand, a prepared, easy-to-use support material for applying the addition-crosslinked, metal-catalyzed silicone directly to the scar and / or the skin surface. On the other hand, the scar treatment pad itself, due to its material thickness, increases compression and thus improves scar treatment. The scar treatment pad can be, for example, a compress, a silicone pad, or a silicone pelotte. Before use, the adhesive outer side of the addition-crosslinked, metal-catalyzed silicone on the underside of the scar treatment pad, where the addition-crosslinked, metal-catalyzed silicone is arranged, can be covered with a film, which is then removed before use.

[0017] It is particularly advantageous that the addition-cured, metal-catalyzed silicone and / or scar treatment pad can be customized to the specific properties and / or shape of the scar and / or skin surface through individual customization. Advantageously, a scar treatment pad can be used by a user over a long period of time, such as one to two years.

[0018] Because the carrier material is preferably arranged on a side of the scar treatment pad facing away from the skin, the scar treatment pad prevents it from sticking to compression garments and / or compression bandages during use. This allows the wearer of the scar treatment pad to easily put on a compression garment without painful braking of the compression garment by the scar treatment pad. This eliminates the need for increased force when putting on the compression garment.

[0019] It is particularly advantageous that the compression garment is also specifically tailored to the body part and / or the scar, for example, knitted and / or woven, and that the addition-cured, metal-catalyzed silicone and / or the scar treatment pad can be freely placed under the compression garment.

[0020] A compression bandage can be applied and used over the addition-cured, metal-catalyzed silicone and / or the scar treatment pad instead of or in addition to a compression garment.

[0021] The invention will be explained in more detail below using an exemplary embodiment. Fig. 1 a highly schematic three-dimensional representation of a scar treatment pad in a state when applied to a scar of an arm.

[0022] A scar treatment pad 101 has a textile carrier material 109 on its upper side 105. On its underside 105, the scar treatment pad 101 has an addition-cured, platinum-catalyzed silicone 107 with a layer thickness of 3 mm. Fig. 1, the scar treatment pad 101 has already been placed on a scar 113 on the arm 111 in the upper area, so that the upper side 105 with the carrier material 109 is visible. In the lower area, the underside 103 with the addition-cured, platinum-catalyzed silicone 107 of the scar treatment pad 101 is still folded up by a hand (not shown) and is then prepared for use by placing it on the Fig. 1 still visible area of ​​the scar 113. After the scar treatment pad 101 has been completely applied, a specifically adapted, manufactured compression sleeve is pulled over the arm 111 and the scar treatment pad 101 and positioned so that by means of the Fig.1 and the scar treatment pad 101. This flattens the scar 113 with long-term use of the scar treatment pad 101. Due to the addition-cured, platinum-catalyzed silicone 107 applied to the scar 113, a desired slight perspiration formation and accumulation occurs in the skin area of ​​the scar 113 between the skin and the underside 103 with the addition-cured, platinum-catalyzed silicone 107, thereby making the scar 113 softer and more movable.

[0023] Thus, a use of addition-cured, platinum-catalyzed silicone 107 in a scar treatment pad 101 is provided, which ensures free placement of the scar treatment pad 101 under the compression sleeve, optimal effect for scar treatment, a permanently flexible and dimensionally stable layer of the addition-cured, platinum-catalyzed silicone 107 and thus a long shelf life as well as optimal hygienic conditions. List of reference symbols 101 Scar Treatment Pad 103 subpage 105 Top 107 platinum-catalyzed silicone 109 Carrier material 111 Arm 113 Scar

Claims

[1] Use of an addition-crosslinked, metal-catalyzed silicone (107) for compressing and / or softening a scar (113), wherein the addition-crosslinked, metal-catalyzed silicone (107) is applied directly to the scar (113) and / or a skin surface. [2] Use according to claim 1, characterized by that the addition-crosslinked, metal-catalyzed silicone (107) is used in combination with a carrier material (109). [3] Use according to claim 1 or 2, characterized by that the addition-crosslinked, metal-catalyzed silicone (107) is used in a scar treatment pad (101). [4] Use according to one of the preceding claims, characterized by that the addition-crosslinked, metal-catalyzed silicone (107) and / or the scar treatment pad (101) is used with its shape adapted to a shape of the scar (113). [5] Use according to claim 3 or 4, characterized bythat the scar treatment pad (101) is used with one side facing the scar (113) having the addition-crosslinked, metal-catalyzed silicone (107) and on an opposite side having the carrier material (109). [6] Use according to one of the preceding claims, characterized by that a compression garment is used over the addition-cured, metal-catalyzed silicone (107), the scar treatment pad (101) and / or the carrier material (109). [7] Use according to one of the preceding claims, characterized by that the compression garment used is a compression stocking, compression pants, compression top, glove, headgear and / or cuff. [8] Use according to one of the preceding claims, characterized bythat a compression bandage is used over the addition-cured, metal-catalyzed silicone (107), the scar treatment pad (101) and / or the carrier material (109). [9] Use according to one of the preceding claims, characterized by that an addition-crosslinked, metal-catalyzed silicone comprising two components, in particular a silicone base and a catalyst, is used as the addition-crosslinked, metal-catalyzed silicone (107). [10] Use according to one of the preceding claims, characterized by that an addition-crosslinked, platinum-catalyzed silicone (107) and / or an addition-crosslinked, tin-catalyzed silicone is used as the addition-crosslinked, metal-catalyzed silicone.

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