AU626827B2 - Primary packaging for surface-stabilized surgical dressings - Google Patents

Abstract

A primary packaging for a surface-stabilized surgical dressing (3) comprises a carrier layer (4), a contact surface with adhesive regions on the side nearer the skin which is protected, before the surgical dressing is used, by a detachable covering layer (6), and a supporting film (7) which comprises at least one layer detachably applied to the surface of the carrier layer (4) farther from the skin and which can be removed from the surgical dressing (3) after application. The supporting film (7) forms part of the protective packaging of the surgical dressing (3).

Description

f~4 I OPI DATE 22/09/89 A0JP DATE 1.9/10/89 APPLN. I D 29281 89 PCT NUMBER PCT/DE89/00030 INTERNATIONALE ANMELLDUNI VbKXk'MN IL1UH Y NACH LhEM VERTRAG UI3ER DIE INTERNATIONALE ZUSAMMENARBEIT AUF DEM GEBIET DES PATENTWESENS (PCT) (51) Internationale Patentklassifikation 4 (11) a'oae en fp ich~ uy WO 89/ 07922 A61F 13/02 Al n: l o-Z um Veroffentlichungsdatum: 8. Seteber 1989 (08.09.89) (21) Internatiounales Aktenzeicben: PCT/DE89/00030 (74) Anwalt: NEIDL-STIPPLER, Cornelia, Rauchstrage 2, D-8000 Mflnchen 80 (DE).

(22) Internatlonales Arnneldedatun: 989(2001.9)(81) Bestimmungsstanten: AU, DK, Fl, HU, JP, KR, NO, us.

(31) Priorltitsaktezeches: P 38 06 444.8 (32) Priorltaitsdatum: 29. Februar 1988 (29.02.88) Veroffentlicht Mil inteerationalem Recherchenbericht.

(33) Priorititslatid: DE (71) Aninelder (fir alle Bestimmungwsaalen ausser US): LTS LOHMANN THERAPIE-SYSTEME GMBH CO.

KG [DE/DE]; Irlicher Strake 55, D-5450 Neuwied 12

(DE).

(72) Erfinder;und Erfinder/Anmelder (nur fi'r US) BARTH, Peter [DE/ DE]; Johann-Gottfried-Herder-Str. 6, D-5450 Neuwied 12 HOFFMANN, Hans-Rainer [DE/DE]; Burghofstra~e 123, D-5450 Neuwied 22 MCJL- LER, Walter [DE/DE]; Engerser Strafle 56, D-5450 Neuwied 1 KINDEL, Heinrich [DE/DE]; Westerwaldstrafle 7, D-5455 Rengsdorf (DE).

(54) Title: PRIMARY PACKAGING FOR SURFACE-STABILIZED SURGICAL DRESSINGS (54) Bezeichnung: PRIMARVERPACKUNG FOR FLXCHENSTABILISIERTE VERBANDSTQFFE 8 7 (57) Abstract A primary packaging for a surface-stabilized surgical dressing comprises a carrier layer a contact surface with adhesive regions on the side ne-arI.- he skin which is protected, before the surgical dressing is used, by a detachable covering layer and a supporting it. which comprises at least one layer detachably applied to the surface of the carrier layer farther from the skin and which can be removed from the surgical dressing after application. The supporting film forms part of the protective packaging of the 5urgical dressing (57) Zusammenfassung Die Erfindung betrifft eine Primarverpackung ffir flachenstabilisierte Verbandstoffe die eine Trigerschicht (4) und eine Haftklebebereiche aufweisende hautseitige KontaktflAche, die vor Gebrauch des Verbancistoffes durch eine abziehbare Abdeckschicht geschfitzt ist, und eine an der der Haut abgewandten Oberfl~che der Tragerschicht abl~sbar angebrachte mindestens einschichtige Stfitzfolie enth~it, die vom applizierten Verbandstoff entfernbar ist, wobei die Stiitzfolie ein Teil einer den Verbandstoff schiltzenden Verpackung ist.

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The invention relates to a primary packaging for a surface-stabilized bandaging materials, which materials have a carrier layer and a skin-side contact surface having contact adhesive areas, which is protected prior to the use of the bandaging material by a removable covering layer and containing an at least one-lay supporting or backing film detachably applied to the carrier layer surface remote from the skin and which is removable from the applied bandaging material after fulfilling its function of surface stabilizing the carrier layer.

In this specification and the appended claims, the term 'primary packaging' is defined as the first, that is the closest packaging around the materials, as opposed to a secondary packaging, which may for example be a cardboard box into which the primary packaging is placed.

Bandaging materials can be subdivided into two major groups. The first group consists of those which are fixed at the point of their application by additional devices or measures, whereas the other group involves the fixing by contact adhesive areas of the actual bandaging material.

In the case of the latter group, the requirement for thin and flexible carrier layers ensuring a usable moisture penetration and good close adaptability to the contours of the application point led to difficulties during application. Thus, after removing the covering layer, there can e.g. be rolling in of the marginal regions, the sticking together of contact adhesive areas and creasing, jcspe.024/lts 91 11 .1 K j 0.

N AV' i j i! I~ j i a 91 -2 which makes the bandaging material unusable.

An improvement is attainable by using a so-called supporting or backing film for surface stabilization purposes, a more rigid layer than the carrier layer being so connected thereto that it can be detached following application (DE-OS 19 35 916). This principle has proved satisfactory in practice (cf. German patent 33 44 334).

However, it must be looked upon as disadvantageous that the supporting film is thrown away after removal from the applied bandaging material and consequently its function is limited to surface stabilization. The expenditure involved in providing the material and the manufacturing measures for this additional element of such bandaging materials is not inconsiderable.

The object of the invention is therefore to so extend "the function of the supporting film that the cost/use ratio becomes more favourable.

The invention provides primary packaging (as i hereinbefore defined) for surface-stabilized bandaging materials having a carrier layer and a skin-side contact surface with contact adhesive areas and which prior to the use of the bandaging material is protected by a removable covering layer attached to the skin-side contact surface and an at least one-layer supporting film detachably S. 25 applied to the carrier layer surface remote from, in use, the skin of a person upon which the bandaging materials are intended to be used, and which aforesaid supporting film is r jcspe.024/lts 92 5 22 i 0A f -2a removable from the applied bandaging material, characterized in that the supporting film is part of the pack protecting the bandaging material.

The invention is usable in all bandaging materials surface-stabilized by supporting films. These bandaging materials are known and are e.g. used as wound bandages, fixing bandages, active substance-delivering plaster and incision films or foils. The carrier layer of the bandaging material can e.g. be a textile material, a polymer material or a metal-containing layer. The supporting film is constituted by an at least one-layer flat structure of materials containing polymers, paper or metal. Its surface has at least the same extension as the carrier layer, but according to a preferred embodiment of the invention can project on one or more sides over the "carrier layer edge. The detachable connection between the supporting film and the carrier layer can be produced by known methods, such as e.g. producing the carrier layer directly on the supporting film, heat sealing, welding, adhesion, bonding, embossing or forming electrostatic attraction forces.

The materials for producing the contact adhesive areas ensuring contact with the skin are chosen from the i jcspe.024/lts 92 5 22 i- 3vast number of possibilities under the standpoint of physiological non-objectionability. A removable covering layer protects the skin contact surface of the bandaging material prior to use.

The sense and purpose of a primary pack for such a bandaging material are known to the Expert. The hitherto known solution of introducing the bandaging material as a whole into an envelope surrounding same on. all sides, followed by the e.g. bonding, sealing, welding or embossing of all the edges did not prove satisfactory due to the material which had to be used.

According to the invention one surface of the primary pack is formed by the supporting film and to whose top or bottom surface is fixed in the marginal area the surface structure forming the remainder of the pack. Fixing can e.g. take place by heat sealing, welding, embossing or bonding. If the supporting film has the same surface area as the carrier layer, the remaining pack components are fixed to the top surface of the supporting film. If the supporting film projects over the carrier layer, it may be preferaule to provide the fixing to the bottom of the projecting parts of the supporting film.

After tearing open the bag-like primary pack the supporting film remains on the back of the carrier layer, which ensures the desired stabilization of the bandaging material during application.

The fixing of the remaining flat packing material to the supporting film and the, productio-n of-the detachable connection between the supporting film and carrier layer can take place in onestep according to the invention.

The choice of the remain-ing flat packing material is determined by the particular requirements made on the bandaging material.to be packed, so. that, no generally valid information can be given. Generally, apart from materials containing' impermeable paper, polymers or metals, consideration can e.g. be given to those materials which, on the basis of their structure, can be lqoked upon as textile 4 Vc~

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Bl 6C -rp '9 U 4 fabrics. The material choice for the supporting film and the remaining pack need not be the same, but must be matched to the particular requirements. In conventional manner, the pack can be provided with a tear-open aid, such as e.g. tearing threads, desired breaking lines or the like.

In a particularly preferred embodiment of the invention, the bandaging material contains at least one active substance. It can be a transdermal therapeutic system, in which an individual pack is unavoidable.

The invention is described -in greater detail hereinafter relative to the drawings, wherein show: Fi2. 1 The diagrammatic cross-section through an embodiment of a bandaging material packed according to the invention.

Fig. 2 The diagrammatic cross-section through another embodiment of an inventively packed bandaging material.

As shown in Fig. I, a carrier layer 4 formed from textile material is coated with a contact adhesive layer which can contain a pharmacologically active substance and on the skin-facing side has a covering layer 6, which is here made from paper adhesively finished by siliconization. The supporting fil"m 7 projects over the carrier layer 4 on all sides and is made from a multilayer film material more rigid than the carrier layer. It is connected by heat sealing to.th.ecar.rier layer 4' at points 8 distributed in accordance with a predetermined pattern. i During heat sealing a sealing edge 11 is formed with the packing film 10 located below it.

Fig. 2 shows another preferred embodiment of the invention in which the supporting film 7 is of the same size as the carrier layer. The packing film 10 surrounds the bandaging material and is bonded-at the edges to the top of the supporting film 7. In this case the contact adhesive layer 5 has no separate covering layer and instead Xi, i '0 I' 1 A'i the packing film 10 assumes the protective layer function.

The bandaging material can be applied directly after opening the pack.

A preferred embodiment of the inventive bandaging material is described hereinafter relative to an example.

Example 1 Production of a packed bandaging material, in which part of the pack functions as a supporting film.

A 15 x 20 cm 2 bandaging material consisting of a textile carrier layer and an active substance-containing contact adhesive layer applied thereto is placed centrally between two heat sealable packing material portions projecting by approximately 1.5 cm on each side.

The packing material is chosen in such a way that the portion coming into contact with the carrier layer can assume the function of the supporting film. Edge sealing and the detachable connection of the supporting film to the carrier layer is performed in one or two successive steps. The finished sealing edge bag is then assembled in the usual way.

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Claims (6)

1. Primary packaging (as hereinbefore defined) for surface-stabilized bandaging materials having a carrier layer and a skin-side contact surface with contact adhesive areas and which prior to the use of the bandaging material is protected by a removable covering layer attached to the skin-side contact surface and an at leaat one-layer supporting film detachably applied to the carrier layer surface remote from, in use, the skin of a person upon which the bandaging materials are intended to be used, and which aforesaid supporting film is removable from the applied bandaging material, characterized in that the supporting film is part of the primary packaging protecting the bandaging material.

2. Primary packaging according to claim 1, characterized in that the carrier layer of the bandaging material is made from a layer containing textile material or a polymer material or a metal.

3. Primary packaging according to claim 1 or claim 2, |j characterized in that the supporting film is an at least *one-layer surface structure of materials containing polymer i or paper or metal.

4. Primary packaging according to claim 3, characterized in that the supporting film is fixed by at least pointwise 25 heat sealing to the carrier layer. Primary packaging according to any one of claims 1 to 3, characterized in that the detachable connection between i

92- i" jcspe.024/lts 92 5 22 i1 i i~ 7 carrier layer and supporting film is produced by an at least partial bonding, by other mechanical or electrostatic forces, or by welding processes. 6. Primary packaging according to claim 5, characterized in that the detachable connection between carrier layer and supporting film is produced by depositing the carrier layer directly on the supporting film. 7. Primary packaging according to any one of the preceding claims, characterized in that the surface of the supporting film is at least as large as the carrier layer. 8. Primary packaging according to any one of the preceding claims, characterized in that the surface structure constituting the remainder of the pack is marginally fixed to the supporting film. 9. Primary packaging according to any one of the preceding claims, characterized in that the packed bandaging material contains at least one active substance. 10. Primary packaging according to any one of the preceding claims, characterized in that the packed bandaging material is a transdermal therapeutic system. 11. Primary packaging (as hereinbefore defined) for 0 surface-stabilized bandaging materials, substantially as herein described with reference to the accompanying :0 drawings. 25 DATED this May 22, 1992 CARTER SMITH BEADLE Fellows Institute of Patent Attorneys of Australia Patent Attorneys for the Applicant: LTS LOHMANN THERAPIE-SYSTEME GMBH CO Q jcspe.024/lts 92 5 22 i ic \K B:_ ~iQ1 -8- ABSTRACT PRIMARY PACK FOR SURFACE-STABILIZED BANDAGING MATERIALS The invention relates to a primary pack for surface- stabilized bandaging materials having a carrier layer and a skin-side contact surface having contact adhesive areas and which prior to the use of the bandaging material is protected by a removable covering layer, and an at least one-layer supporting film .detachably applied to the skin- remote surface of the carrier layer and which can be removed from the applied bandaging material, the supporting film forming part of the pack protecting the bandaging material. j Vg f_ V- 44i. 4: 4 1 N1,r Ir _e INTERNATIONAL SEARCH REPORT International Applicationi No PCT/DE 89/00030 1. CLASSIFICATION OF SUBJECT MATTER (If Several classification Symbols apply, Indicate all) According to international Patent ClassificatIon (IPC) of to both National Clasaification anid IPC Int.Cl. 4 A 61 F 13/02 II. FIELDS5 SEARCHED Minimum Documentation Searched Cleasficaton System Classification Symbols n.C.41 A 61 F Doeumentation Searched other than Minimum Docuimentation to the=Etn that such Documents ame IncludeA In the Fields Searched 0

111. DOCUMENTS CONSIDERED TO Off RELEVANTO Category" Citation of Document,"1 with Indication, where appropriate, of the relevant Passages Is Relevant to Claim No. Is Y EP, A, 0144891 (LOHMN) 19 June 1985, see page 8, 1-10 lines 1-12,25,26; page 9, lines 2-7,19,20; figure Y US, A, 4450844 (QUIsNO) 29 May 1984, 1-10 see column 3, lines 42-50; column 5, lines 15-27; figures 2,6.-4bes1 7 A EP, A,0l7l800'IALLPACK) 19 February 1986, see page 12, lines 31-41; figure 2 A US, A, 3277891 (HOEY) 11 October 1966, 2,3 see column 2, lines 55-63 Specia categories of cited documents: '5 laes document published atear the Intwetnall filing date document defining the genral state of the art which Is not or priority date and not In conflict with the application but considered to be of pafticulat relevance cited to understand the principle or theory underlying the invention earlier document but published on or after the lnternaione document of particular relevance; the claimed Inveintion filing date cannot be conaidered novel or cannot be considered to IL" document which may throw doubts on priority claim(s) or Involve on~ Inventive step which Is cited to establish the Publication date of another -douet0prtulrelan;thclidivntn citaionor oherspeial easn (s apcifeo)cannot be considered to Involve an inventive aSoe wheni the document raerning to an oral disclosare, use, exhibitlon or document is coinblned with one or mome other such docu- other means m"flt, such co~mbination being obvious to a person Skilled document published prior to the international filing date but In the art. later than the Priority date clmed WA document memiber of the "ame patent family IV. CERTIFICATION Date of the Actual Completion of the International Search Data of Mailing of this International Search Aepoy 19 April 1989 (19.04.89) 17 May 1989 (17.W~.89) International Searching Authority Signature of Aut% rized Ofilcer European Patent Office Form PCT/1SAIIIO (second sheet) (Januay IOU) r ANNEX TO THE INTERNATIONAL SEARCH REPORT ON INTERNATIONAL PATENT APPLICATION NO. DE 8900030 SA 26337 This annex lists the patent family members relating to the patent documents cited in the above-mentioned international search report. The members are as contained in the European Patent Office EDP file on 28/04/89 The European Patent Office is in no way liable for these particulars which are merely given for the purpose of information. Patent document Publication Patent family Publication cited in search report date member(s) date EP-A- 0144891 19-06-85 AU-A- 3640984 13-06-85 DE-A,C 3344334 20-06-85 US-A- 4619253 28-10-86 JP-A- 60168450 31-08-85 CA-A- 1223166 23-06-87 DE-A- 3470839 09-06-88 AU-B- 578639 03-11-88 'US-A- 4450844 29-05-84 EP-A- 0171800 19-02-86 DE-C- 3430250 24-04-86 DE-A,C 3511963 27-02-86 <US- C-546952-7 22-09-87 DE-A- 3560934 17-12-87 US-A- 3277891 aI ao E For more detils about this annex see O~icial Journal of the European Iatet Office, No. 12/82 a