CA1320888C - Fixing system for fastening catheters, cannules or the like to the skin surface and process for the sterile fastening thereof - Google Patents
Fixing system for fastening catheters, cannules or the like to the skin surface and process for the sterile fastening thereofInfo
- Publication number
- CA1320888C CA1320888C CA000538089A CA538089A CA1320888C CA 1320888 C CA1320888 C CA 1320888C CA 000538089 A CA000538089 A CA 000538089A CA 538089 A CA538089 A CA 538089A CA 1320888 C CA1320888 C CA 1320888C
- Authority
- CA
- Canada
- Prior art keywords
- skin
- film
- fixing system
- cannula
- overplaster
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/02—Holding devices, e.g. on the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F2013/00361—Plasters
- A61F2013/00365—Plasters use
- A61F2013/00412—Plasters use for use with needles, tubes or catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/02—Holding devices, e.g. on the body
- A61M2025/0266—Holding devices, e.g. on the body using pads, patches, tapes or the like
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- External Artificial Organs (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A fixing system is disclosed for fixing catheters, cannulas and the like. The system includes a skin film coated with a skin adhesion layer and having a cover film and an overplaster finished with a contact adhesive layer adhering to the skin film and having an overplaster cover layer. A process for the sterile fastening of a cannula to the skin is also disclosed which includes the steps of application of a bacteria-tight skin film with skin adhesion layer to the skin in the insertion region of the cannula, passing the cannula through the skin film, applying to the underplaster region surrounding the insertion point an adhesive forming an elastic, bacteria-tight film adhering to the underplaster with the cannula portion projecting out of the skin, and sticking the overplaster over the cannula.
A fixing system is disclosed for fixing catheters, cannulas and the like. The system includes a skin film coated with a skin adhesion layer and having a cover film and an overplaster finished with a contact adhesive layer adhering to the skin film and having an overplaster cover layer. A process for the sterile fastening of a cannula to the skin is also disclosed which includes the steps of application of a bacteria-tight skin film with skin adhesion layer to the skin in the insertion region of the cannula, passing the cannula through the skin film, applying to the underplaster region surrounding the insertion point an adhesive forming an elastic, bacteria-tight film adhering to the underplaster with the cannula portion projecting out of the skin, and sticking the overplaster over the cannula.
Description
132~8~
This invention relates to a fixing system for fastening cannulas, catheters and the like to the skin, as well as to a process for the sterile fastening of a cannula to the skin.
The terms "cannula" and "catheter" are intended herein to mean "probes" of the type used e.g. for introducing body fluids into vessels and removing body fluids from vessels, and can be in the form of needles, cannulas, catheters, measurement probes (e.g. for measuring lO certain body parameters, such as the oxygen partial pressure), as well as infusion means. Cannulas must be secured to the body, e.g. during the dialysis of patients or during longer infusions. Means for fixing cannulas and catheters are known.
EP-B1-76 896 and EP-Al-121 679 disclose a medical dressing for fixing a probe, having a dressing portion which can be fastened to the skin and to the part of the probe projecting from the skin by means of plasters. This dressing portion is provided with a tubular extension, 20 which serves as a support or reception means for the probe part projecting from the skin.
German Utility Model 82 04 827.4 describes a holding or retaining device comprising two clamping plates, which receive a cannula which is then secured by plaster to 25 the skin.
DE-OS 32 12 458 discloses a bandage system for catheters to be externally applied to males and more particularly ~relates to the geometrical configuration of plaster strips.
German Patent DE-PS 29 47 427 relates to a vein catheter bandage which, by means of a plaster with a watertight, air-permeable, contact adhesively finished film, which can optionally have a moisture-absorbent layer on the skin-remote side, and fixes a cannula with a stop 35 valve to the skin. Dimensions of 95 x 60 mm are given as the preferred dimensions for the plaster.
~ DE-OS 31 05 187 describes a cannula fixing ;~ plaster with a punched out plaster segmant which, upon : ' ' .
.
- ~ , : :
., . . r .
' 132~88 insertion of the cannula, is fixed to the latter and in this way prevents the removal of the cannula, whilst the remaining plaster adheres to the skin.
EP-Al~116 526 relates to another principle for 5 fastening cannulas to the skin, in which a catheter retaining device is fixed by means of a needle passed through the skin of the patient to be treated. In special cases the catheter is even sewn to the skin for securing it in position.
For example, under the trade mark POROFIX, plaster strips are commercially available for fixing such cannulas. They are adhesive plasters with a slit, which is in particular used for fixing ~trauss cannulas during infusions.
These known cannula fixing plasters have the advantage that the underlying skin portions can breath, the film being water vapour and oxygen permeable, so that there will be no maceration of the skin surface.
However, it is a disadvantage of the known 20 cannula fixing means, that the insertion or puncture point and the underlying skin portions in the puncture or insertion channel are not adequately protected against infections from bacteria which can enter from the skin surface. Attempts have been made to at least partially 25 obviate this problem by disinfecting the skin prior to puncturing. However, disinfection only treats the upper skin layers and is unable to prevent the penetration of bacteria into the insertion channel from lower lying skin layers or from the exterior.
It is important to ensure a good fixing of the cannula, so as to prevent slipping thereof over long periods of time.
The prior art arrangements only partly solve this problem. it is necessary to use either very complicated 35 means for fixing the cannula, which is stuck to the skin with the adhesive plaster, or simple plasters with -`~ incisions or slits, which do not lead to a satisfactory, long-term cannula fixing.
':
:. :
.
:~32g~8 An object of the present invention is thus to pro~ride an improved cannula fixing system, which protects the insertion or puncture point against infection, even in the case of cannulas which are left in for long durations, 5 such as shunts in the case of dialysis patients, and is accompanied by good fixing, and simultaneously preventing damage to the skin layers.
Accordingly, one aspect of the invention provides a fixing system for fastening catheters and cannulas, which 10 comprises a skin film coated with a skin adhesion layer and having a cover film and an overplaster finished with a contact adhesive layer adhering to the skin film and having an overplaster cover layer.
Another aspect of the invention provides a 15 process for the sterile fastening of a cannula to the skin, which comprises applying a bacteria-tight skin film with skin adhesion layer to the skin in the cannula insertion or puncture region, passing the cannula through the skin film, applying to the area of the underplaster surrounding the 20 insertion point an adhesive forminq an elastic, bacteria-tight film adhering to the underplaster with at least part of the cannula portion projecting from the skin, so that the puncture region is sealed, and then sticking the overplaster over the cannula.
In a preferred embodiment of the invention, the layers are superimposed in sandwich-like manner and on one side are interconnected in a partial region without an intermediate film or an intermediate separating film, the overplaster cover layer becoming an intermediate separating 30 film between the skin film and the contact adhesive coating of the overplaster.
It is also advantageous if the skin film is a flexible, water vapour-permeable and bacteria tight film, e.g. a natural or synthetic polymer, such as cross-linked 35 collagen or polyurethane, such as is commercially available in incision film form. The skin film and/or overplaster, as well as optionally also the contact adhesive layers can .. . .. . . . . - : .
132~
be transparent, so as to permit observation of the insertion or puncture point.
If both the overplaster and skin film are transparent, it is possible, even in the case of a longer-5 term fixing of a cannula or catheter, to constantly checkthe position thereof by inspecting the outside of the cannula fixing system, without it being necessary to remove or open the latter, which would give rise to infection or injury risks for the patient. As a result of this 10 advantageous construction, it is possible in many cases to obviate cannula changes.
If the surface of the skin film is larger than the overplaster, a very good adhesion of the skin film to the skin is ensured as a result of the larger adhesive 15 surface and it is now possible to adhere to the skin film an overplaster with a very strong adhesive in the contact adhesive coating, which might even lead to skin layer injuries if it were to be used on the skin. It is appropriate for the ovarplaster to have a much smaller area 20 than the underplaster, so as to prevent any maceration of the skin by air and moisture exclusion when using an overplaster with poor air and moisture conduction.
It is advantageous in this case if the contact adhesive layer of the overplaster more strongly adheres to 25 the skin film than the skin adhesion layer adheres to the skin. Preferably the overplaster cover film has a separating line and optionally two removal aids for each intermediate separating film portion.
According to a preferred embodiment of the 30 invention, the skin film can be coated with an active substance on one or both sides and preferably with a bactericidal substance or the like. To prevent detachment of the edges of the skin film from the skin, in addition to the skin adhesion layer, the s~in film can have an all-35 round, more strongly contact adhering adhesive rim orborder.
The overplaster can be perforated, so as to ensure that, in the case of any necessary application of a .
51~2~8~
solvent to the overplaster, it is possible to ensure an easy removal thereof by neutralizing the adhesive layer by the solvent. Following such solvent treatment, it is possible to remove the upper plaster and then the cannula.
5 The skin film can then be removed. The perforations also prevent maceration of underlying skin surfaces.
A particularly preferred embodiment of the inventive fixing system also includes an adhesive forming elastic polymer or its starting material, which adheres to 10 the skin surface and the cannula surface and, following application to the skin film and insertion point, forms a bacteria-tight sealing of the insertion point together with the skin film.
According to another embodiment of the invention, 15 the inventiva fixing system can also include a cannula support body and a reception opening adapted to the outside shape of a cannula, in such a way that, when the cannula support body is applied to the skin film, the cannula is fixed at a predetermined angular position in the reception 20 opening. The cannula support body can optionally also have a contact adhesively finished support surface, with which it is engaged on the skin ~ilm and can, for example, be ~ixed during the insertion o~ the cannula. This embodiment is particularly advantageous if it: is intended to avoid 25 firm adhesion of the overplaster to the cannula, which could in certain circumstances be painful for the patient on removing the cannula. In this case the cannula is fastened by frictional engagement in the reception opening of the cannula support body.
The cannula support body is advantageously moulded from elastic material, preferably a polymer, which is optionally transparent. Silicon rubber or other polymers are suitable for this purpose.
As mentioned above, the invention also relates to 35 a process for the sterile fastening of a cannula to the skin, characterised by the application to the skin in the puncture or insertion region of the cannula of a bacteria-tight skin film with skin adhesion layer, passing the . : : ,: , ' '' ~ ' ' ~' . . ' -, ~ :
, ' 1 3 ~
cannula through the skin film, applying to the skin an adhesive forming an elastic, bacteria-tight film adhering to the underplaster in the cannula insertion region, passing the cannula through the skin film, applying to the 5 area of the underplaster surrounding the insertion point an adhesive forming an elastic, bacteria-tight film adhering to the underplaster and to at least part of the cannula portion projecting from the skin and sticking the overplaster over the cannula.
In a preferred embodiment of the inventive process a cannula support body is engaged and fixed on the skin film or skin, with subsequent or prior embedding of the cannula in the reception opening of the cannula support body.
The cannula support body can be fixed in position both by means of a contact adhesive layer, by means of an adhesive or by sticking over with the overplaster.
In a preferred embodiment of the inventive fixing system with two separate plasters comprising cover film, 20 skin adhesion layer and skin film, together with an overplaster cover film, contact adhesive layer and overplaster, the skin film, which is preferably an incision film, is detached from its surface cover layer and adhered to the skin surface to be provided with a cannula. The 25 incision film is then perforated by the cannula. The punching out of an incision film portion by the hypodermic needle and the feeding of the same into the insertion or puncture channel can be obviated either by choosing a suitable semi-blunt cannula form, so that only a horseshoe-30 shaped tab is punched out and continues to be connected ~othe ~ilm on one side, or by using an incision film (e.g.
cross~linked collagen~. Another advantageous alternative involves the use of a cannula with a retractable central pin. Basy cleaning is made possible in that, prior to the 35 introduction of liquids into the body, the inside of the cannula is cleaned, e.g. by producing a vasuum on the body-remote side, for sucking up of residues of punched out portions and also any detached tissue parts.
1 3 '~
A particularly preferred embodiment with active ingredient-filled incision film is particularly advantageous if the inventive cannula fixing plast~r is in-tended to be left on the skin for a long time. The same 5 also applies in the case of patients for which an infection would have a particularly negative effect, because a cannula is frequently introduced into their vessell e.g. in the case of dialysis patients. In such cases a so-called shunt is produced, i.e. a connection between an artery and 10 a vein, and then a new cannula can be inserted there for each dialysis. ~n incision film coated with bactericidally active substances on the top of th~ skin film, in addition or alternatively thereto, would substantially prevent a migration of bacteria towards the body-remote puncture 15 point.
According to a particularly preferred embodiment of the inventive fixing plaster, the overplaster portion and skin film portion, separated by an intermediate separating film which is optionally adhesive on both sides, 20 are superimposed. It is preferable for the intermediate separating film to have a separating line, which defines a larger and a smaller surface portion. It is appropriate for the removable intermediate separating film parts and cover films to have removal aids.
Firstly the cover film covering the skin film on the skin side is removed (optionally using a removal aid) and the remaining sandwich-like plaster system is adhered as an entity to the skin. Subsequently, part or all the overplaster is drawn off from the skin film together with 30 the intermediate separating film. A portion of the intermediate separating film is detached from the separating intermediate film residue along a prepared separating line and then detached from the overplaster.
The now exposed contact adhesive layer is adhered to the 35 skin film. The remainder of the intermediate separating film is now flapped away from the skin film, together with the overplaster part covered but not adhered by it, so that the skin film, preferably an incision film is located , .
' 132~8 freely over the puncture point. This step is then followed by puncturing. The intermediate separating film is now completely removed, optionally with a second removal aid and the overplaster is placed over the cannula, so that it 5 rests in roughly horseshoe-shaped manner on the lower plaster and the cannula projects from the open side of the horseshoe. (Obviously the sequence of steps can be modified, e.g. the cannula can be engaged ~irst followed by the overplaster being stuck down).
To avoid maceration phenomena and in order to facilitate removal of the overplaster by solvents, it may be appropriate to perforate the overplaster.
With the aid of the inventive cannula fixing plaster, the cannula can be supported in a pocket formed by 15 the skin film and overplaster and consequently contact between cannula and skin is substantially avoided.
To avoid punching out a skin film portion on inserting the cannula, the latter can be engaged on one edge, or even outside the fixing system, so that improved 20 fixing of the cannula is made possible by the inventive fixing system. There is no complete coverir.g of the insertion region by the skin film and use is made solely of the fixing action of the fixing plaster system.
The individual parts of the fixing system, such 25 as the underplaster, overplaster, and adhesive matched thereto and the cannula support body are essential to the invention.
Emhodiments of the invention will now be described in greater detail with reference to the 30 accompanying drawings, in which:
Figure 1 shows an embodiment of fixing plaster with separate overplaster and skin film;
Figure 2 is a longitudinal section through a sandwich-like overplaster - skin film combination;
Figure 3 is a plan view of the plaster o~ Figure 2 in the fitted state;
Figure 4 shows the plaster of Figures 2 and 3 , - ` .
~2~3~8~
prior to the application of the overplaster and with adhesive applied;
Figure 5 is a plan view of an overplaster - cover layer combination with removal aid and separating line;
Figure 6 is a view of an embodiment of the inventive fixing system with cannula support body; and Figure 7 shows a cross-section of the fixing system of Figure 6 taken along line VIl-VII' of Figure 6.
Referring now to the drawings, as ~hown in Figure 10 l, a preferred embodiment of the inventive "underplaster"
comprises a cover film 1, a skin adhesion layer 2 and a skin film 3, which is preferably finished in an air and water vapour-permeable and optionally also bactericidal manner. The "upper part" of the fixing system comprises an 15 overplaster 6, a contact adhesive layer 5 and an overplaster cover film 4, optionally with a removal aid.
The fixing system shown in Figure 1 is able to fix a cannula 8 (Figure 3) which, follow:ing the adhesion of the skin film to the skin, is optionally sealed with a 20 bacteria-tight adhesive 7 and is subsequently fastened by the overplaster 6 stuck to the skin film 3.
Figure 2 shows a sandwich-like variant of the inventive fixing system, in which the same layers as described in Figure l are superimposed, but in this case 25 the overplaster cover layer 4 constitutes an intermediate separating film.
Figure 3 shows the plaster shown in Figure 2 applied to the skin. A smaller overplaster 6 is stuck to a large surface skin film 3 and fixes the cannula 8 in 30 position.
In Figure 4 the cannula 8 has already perforated the secured skin film and the overplaster with a portion freed from the intermediate separating film stuck to the skin film 3. The bacteria-tight adhesive 7 has been 35 applied around the insertion point on the skin film 3 and the free cannula end, whilst forming a foil-like seal. The overplaster portion 3 still provided with the intermediate separating film 4 is flapped back and has on its end a ~' ' , ' .
1 320~
removal aid, which facilitates the removal of the remaining intermediats film portion. The next operation is to remove the intermediate separating film 4 from the remainder of overplaster 6 by means o~ the removal aid, to place the 5 overplaster 6 over the cannula 8 and to secure same by adhesion.
Figure S shows the surface portion of Figure 4 from the side of the intermediate separating film 3. It is possible to see two removal aids and a separating line, 10 along which initially a part of the intermediate separating film is removed and then the overplaster 6 is stuck to the skin film 3.
Figure 6 shows a further development of the inventive fixing system, in which a cannula support body 9 15 formed from an elastic polymer is adhered to the skin film 3 with a support surface 10, which in this embodiment has a contact adhesive finish. The cannula support body 9 has a reception opening 11, in which the cannula 8 can be frictionally engaged. In the embodiment shown, the cannula 20 8 can be pressed through a slit in an elastic boundary wall of the reception opening 11 and is secured by the cannula support body walls which elastically return to their inoperative position.
Figure 7 shows sectionally the fixing system of 25 Figure 6 taken along line VII-VII'. For a better fastening of the cannula 8, an overplaster 6 is adhered over the cannula support body 9. In this embodiment there is no need for a contact adhesive coating of the skin support surface 10.
This invention relates to a fixing system for fastening cannulas, catheters and the like to the skin, as well as to a process for the sterile fastening of a cannula to the skin.
The terms "cannula" and "catheter" are intended herein to mean "probes" of the type used e.g. for introducing body fluids into vessels and removing body fluids from vessels, and can be in the form of needles, cannulas, catheters, measurement probes (e.g. for measuring lO certain body parameters, such as the oxygen partial pressure), as well as infusion means. Cannulas must be secured to the body, e.g. during the dialysis of patients or during longer infusions. Means for fixing cannulas and catheters are known.
EP-B1-76 896 and EP-Al-121 679 disclose a medical dressing for fixing a probe, having a dressing portion which can be fastened to the skin and to the part of the probe projecting from the skin by means of plasters. This dressing portion is provided with a tubular extension, 20 which serves as a support or reception means for the probe part projecting from the skin.
German Utility Model 82 04 827.4 describes a holding or retaining device comprising two clamping plates, which receive a cannula which is then secured by plaster to 25 the skin.
DE-OS 32 12 458 discloses a bandage system for catheters to be externally applied to males and more particularly ~relates to the geometrical configuration of plaster strips.
German Patent DE-PS 29 47 427 relates to a vein catheter bandage which, by means of a plaster with a watertight, air-permeable, contact adhesively finished film, which can optionally have a moisture-absorbent layer on the skin-remote side, and fixes a cannula with a stop 35 valve to the skin. Dimensions of 95 x 60 mm are given as the preferred dimensions for the plaster.
~ DE-OS 31 05 187 describes a cannula fixing ;~ plaster with a punched out plaster segmant which, upon : ' ' .
.
- ~ , : :
., . . r .
' 132~88 insertion of the cannula, is fixed to the latter and in this way prevents the removal of the cannula, whilst the remaining plaster adheres to the skin.
EP-Al~116 526 relates to another principle for 5 fastening cannulas to the skin, in which a catheter retaining device is fixed by means of a needle passed through the skin of the patient to be treated. In special cases the catheter is even sewn to the skin for securing it in position.
For example, under the trade mark POROFIX, plaster strips are commercially available for fixing such cannulas. They are adhesive plasters with a slit, which is in particular used for fixing ~trauss cannulas during infusions.
These known cannula fixing plasters have the advantage that the underlying skin portions can breath, the film being water vapour and oxygen permeable, so that there will be no maceration of the skin surface.
However, it is a disadvantage of the known 20 cannula fixing means, that the insertion or puncture point and the underlying skin portions in the puncture or insertion channel are not adequately protected against infections from bacteria which can enter from the skin surface. Attempts have been made to at least partially 25 obviate this problem by disinfecting the skin prior to puncturing. However, disinfection only treats the upper skin layers and is unable to prevent the penetration of bacteria into the insertion channel from lower lying skin layers or from the exterior.
It is important to ensure a good fixing of the cannula, so as to prevent slipping thereof over long periods of time.
The prior art arrangements only partly solve this problem. it is necessary to use either very complicated 35 means for fixing the cannula, which is stuck to the skin with the adhesive plaster, or simple plasters with -`~ incisions or slits, which do not lead to a satisfactory, long-term cannula fixing.
':
:. :
.
:~32g~8 An object of the present invention is thus to pro~ride an improved cannula fixing system, which protects the insertion or puncture point against infection, even in the case of cannulas which are left in for long durations, 5 such as shunts in the case of dialysis patients, and is accompanied by good fixing, and simultaneously preventing damage to the skin layers.
Accordingly, one aspect of the invention provides a fixing system for fastening catheters and cannulas, which 10 comprises a skin film coated with a skin adhesion layer and having a cover film and an overplaster finished with a contact adhesive layer adhering to the skin film and having an overplaster cover layer.
Another aspect of the invention provides a 15 process for the sterile fastening of a cannula to the skin, which comprises applying a bacteria-tight skin film with skin adhesion layer to the skin in the cannula insertion or puncture region, passing the cannula through the skin film, applying to the area of the underplaster surrounding the 20 insertion point an adhesive forminq an elastic, bacteria-tight film adhering to the underplaster with at least part of the cannula portion projecting from the skin, so that the puncture region is sealed, and then sticking the overplaster over the cannula.
In a preferred embodiment of the invention, the layers are superimposed in sandwich-like manner and on one side are interconnected in a partial region without an intermediate film or an intermediate separating film, the overplaster cover layer becoming an intermediate separating 30 film between the skin film and the contact adhesive coating of the overplaster.
It is also advantageous if the skin film is a flexible, water vapour-permeable and bacteria tight film, e.g. a natural or synthetic polymer, such as cross-linked 35 collagen or polyurethane, such as is commercially available in incision film form. The skin film and/or overplaster, as well as optionally also the contact adhesive layers can .. . .. . . . . - : .
132~
be transparent, so as to permit observation of the insertion or puncture point.
If both the overplaster and skin film are transparent, it is possible, even in the case of a longer-5 term fixing of a cannula or catheter, to constantly checkthe position thereof by inspecting the outside of the cannula fixing system, without it being necessary to remove or open the latter, which would give rise to infection or injury risks for the patient. As a result of this 10 advantageous construction, it is possible in many cases to obviate cannula changes.
If the surface of the skin film is larger than the overplaster, a very good adhesion of the skin film to the skin is ensured as a result of the larger adhesive 15 surface and it is now possible to adhere to the skin film an overplaster with a very strong adhesive in the contact adhesive coating, which might even lead to skin layer injuries if it were to be used on the skin. It is appropriate for the ovarplaster to have a much smaller area 20 than the underplaster, so as to prevent any maceration of the skin by air and moisture exclusion when using an overplaster with poor air and moisture conduction.
It is advantageous in this case if the contact adhesive layer of the overplaster more strongly adheres to 25 the skin film than the skin adhesion layer adheres to the skin. Preferably the overplaster cover film has a separating line and optionally two removal aids for each intermediate separating film portion.
According to a preferred embodiment of the 30 invention, the skin film can be coated with an active substance on one or both sides and preferably with a bactericidal substance or the like. To prevent detachment of the edges of the skin film from the skin, in addition to the skin adhesion layer, the s~in film can have an all-35 round, more strongly contact adhering adhesive rim orborder.
The overplaster can be perforated, so as to ensure that, in the case of any necessary application of a .
51~2~8~
solvent to the overplaster, it is possible to ensure an easy removal thereof by neutralizing the adhesive layer by the solvent. Following such solvent treatment, it is possible to remove the upper plaster and then the cannula.
5 The skin film can then be removed. The perforations also prevent maceration of underlying skin surfaces.
A particularly preferred embodiment of the inventive fixing system also includes an adhesive forming elastic polymer or its starting material, which adheres to 10 the skin surface and the cannula surface and, following application to the skin film and insertion point, forms a bacteria-tight sealing of the insertion point together with the skin film.
According to another embodiment of the invention, 15 the inventiva fixing system can also include a cannula support body and a reception opening adapted to the outside shape of a cannula, in such a way that, when the cannula support body is applied to the skin film, the cannula is fixed at a predetermined angular position in the reception 20 opening. The cannula support body can optionally also have a contact adhesively finished support surface, with which it is engaged on the skin ~ilm and can, for example, be ~ixed during the insertion o~ the cannula. This embodiment is particularly advantageous if it: is intended to avoid 25 firm adhesion of the overplaster to the cannula, which could in certain circumstances be painful for the patient on removing the cannula. In this case the cannula is fastened by frictional engagement in the reception opening of the cannula support body.
The cannula support body is advantageously moulded from elastic material, preferably a polymer, which is optionally transparent. Silicon rubber or other polymers are suitable for this purpose.
As mentioned above, the invention also relates to 35 a process for the sterile fastening of a cannula to the skin, characterised by the application to the skin in the puncture or insertion region of the cannula of a bacteria-tight skin film with skin adhesion layer, passing the . : : ,: , ' '' ~ ' ' ~' . . ' -, ~ :
, ' 1 3 ~
cannula through the skin film, applying to the skin an adhesive forming an elastic, bacteria-tight film adhering to the underplaster in the cannula insertion region, passing the cannula through the skin film, applying to the 5 area of the underplaster surrounding the insertion point an adhesive forming an elastic, bacteria-tight film adhering to the underplaster and to at least part of the cannula portion projecting from the skin and sticking the overplaster over the cannula.
In a preferred embodiment of the inventive process a cannula support body is engaged and fixed on the skin film or skin, with subsequent or prior embedding of the cannula in the reception opening of the cannula support body.
The cannula support body can be fixed in position both by means of a contact adhesive layer, by means of an adhesive or by sticking over with the overplaster.
In a preferred embodiment of the inventive fixing system with two separate plasters comprising cover film, 20 skin adhesion layer and skin film, together with an overplaster cover film, contact adhesive layer and overplaster, the skin film, which is preferably an incision film, is detached from its surface cover layer and adhered to the skin surface to be provided with a cannula. The 25 incision film is then perforated by the cannula. The punching out of an incision film portion by the hypodermic needle and the feeding of the same into the insertion or puncture channel can be obviated either by choosing a suitable semi-blunt cannula form, so that only a horseshoe-30 shaped tab is punched out and continues to be connected ~othe ~ilm on one side, or by using an incision film (e.g.
cross~linked collagen~. Another advantageous alternative involves the use of a cannula with a retractable central pin. Basy cleaning is made possible in that, prior to the 35 introduction of liquids into the body, the inside of the cannula is cleaned, e.g. by producing a vasuum on the body-remote side, for sucking up of residues of punched out portions and also any detached tissue parts.
1 3 '~
A particularly preferred embodiment with active ingredient-filled incision film is particularly advantageous if the inventive cannula fixing plast~r is in-tended to be left on the skin for a long time. The same 5 also applies in the case of patients for which an infection would have a particularly negative effect, because a cannula is frequently introduced into their vessell e.g. in the case of dialysis patients. In such cases a so-called shunt is produced, i.e. a connection between an artery and 10 a vein, and then a new cannula can be inserted there for each dialysis. ~n incision film coated with bactericidally active substances on the top of th~ skin film, in addition or alternatively thereto, would substantially prevent a migration of bacteria towards the body-remote puncture 15 point.
According to a particularly preferred embodiment of the inventive fixing plaster, the overplaster portion and skin film portion, separated by an intermediate separating film which is optionally adhesive on both sides, 20 are superimposed. It is preferable for the intermediate separating film to have a separating line, which defines a larger and a smaller surface portion. It is appropriate for the removable intermediate separating film parts and cover films to have removal aids.
Firstly the cover film covering the skin film on the skin side is removed (optionally using a removal aid) and the remaining sandwich-like plaster system is adhered as an entity to the skin. Subsequently, part or all the overplaster is drawn off from the skin film together with 30 the intermediate separating film. A portion of the intermediate separating film is detached from the separating intermediate film residue along a prepared separating line and then detached from the overplaster.
The now exposed contact adhesive layer is adhered to the 35 skin film. The remainder of the intermediate separating film is now flapped away from the skin film, together with the overplaster part covered but not adhered by it, so that the skin film, preferably an incision film is located , .
' 132~8 freely over the puncture point. This step is then followed by puncturing. The intermediate separating film is now completely removed, optionally with a second removal aid and the overplaster is placed over the cannula, so that it 5 rests in roughly horseshoe-shaped manner on the lower plaster and the cannula projects from the open side of the horseshoe. (Obviously the sequence of steps can be modified, e.g. the cannula can be engaged ~irst followed by the overplaster being stuck down).
To avoid maceration phenomena and in order to facilitate removal of the overplaster by solvents, it may be appropriate to perforate the overplaster.
With the aid of the inventive cannula fixing plaster, the cannula can be supported in a pocket formed by 15 the skin film and overplaster and consequently contact between cannula and skin is substantially avoided.
To avoid punching out a skin film portion on inserting the cannula, the latter can be engaged on one edge, or even outside the fixing system, so that improved 20 fixing of the cannula is made possible by the inventive fixing system. There is no complete coverir.g of the insertion region by the skin film and use is made solely of the fixing action of the fixing plaster system.
The individual parts of the fixing system, such 25 as the underplaster, overplaster, and adhesive matched thereto and the cannula support body are essential to the invention.
Emhodiments of the invention will now be described in greater detail with reference to the 30 accompanying drawings, in which:
Figure 1 shows an embodiment of fixing plaster with separate overplaster and skin film;
Figure 2 is a longitudinal section through a sandwich-like overplaster - skin film combination;
Figure 3 is a plan view of the plaster o~ Figure 2 in the fitted state;
Figure 4 shows the plaster of Figures 2 and 3 , - ` .
~2~3~8~
prior to the application of the overplaster and with adhesive applied;
Figure 5 is a plan view of an overplaster - cover layer combination with removal aid and separating line;
Figure 6 is a view of an embodiment of the inventive fixing system with cannula support body; and Figure 7 shows a cross-section of the fixing system of Figure 6 taken along line VIl-VII' of Figure 6.
Referring now to the drawings, as ~hown in Figure 10 l, a preferred embodiment of the inventive "underplaster"
comprises a cover film 1, a skin adhesion layer 2 and a skin film 3, which is preferably finished in an air and water vapour-permeable and optionally also bactericidal manner. The "upper part" of the fixing system comprises an 15 overplaster 6, a contact adhesive layer 5 and an overplaster cover film 4, optionally with a removal aid.
The fixing system shown in Figure 1 is able to fix a cannula 8 (Figure 3) which, follow:ing the adhesion of the skin film to the skin, is optionally sealed with a 20 bacteria-tight adhesive 7 and is subsequently fastened by the overplaster 6 stuck to the skin film 3.
Figure 2 shows a sandwich-like variant of the inventive fixing system, in which the same layers as described in Figure l are superimposed, but in this case 25 the overplaster cover layer 4 constitutes an intermediate separating film.
Figure 3 shows the plaster shown in Figure 2 applied to the skin. A smaller overplaster 6 is stuck to a large surface skin film 3 and fixes the cannula 8 in 30 position.
In Figure 4 the cannula 8 has already perforated the secured skin film and the overplaster with a portion freed from the intermediate separating film stuck to the skin film 3. The bacteria-tight adhesive 7 has been 35 applied around the insertion point on the skin film 3 and the free cannula end, whilst forming a foil-like seal. The overplaster portion 3 still provided with the intermediate separating film 4 is flapped back and has on its end a ~' ' , ' .
1 320~
removal aid, which facilitates the removal of the remaining intermediats film portion. The next operation is to remove the intermediate separating film 4 from the remainder of overplaster 6 by means o~ the removal aid, to place the 5 overplaster 6 over the cannula 8 and to secure same by adhesion.
Figure S shows the surface portion of Figure 4 from the side of the intermediate separating film 3. It is possible to see two removal aids and a separating line, 10 along which initially a part of the intermediate separating film is removed and then the overplaster 6 is stuck to the skin film 3.
Figure 6 shows a further development of the inventive fixing system, in which a cannula support body 9 15 formed from an elastic polymer is adhered to the skin film 3 with a support surface 10, which in this embodiment has a contact adhesive finish. The cannula support body 9 has a reception opening 11, in which the cannula 8 can be frictionally engaged. In the embodiment shown, the cannula 20 8 can be pressed through a slit in an elastic boundary wall of the reception opening 11 and is secured by the cannula support body walls which elastically return to their inoperative position.
Figure 7 shows sectionally the fixing system of 25 Figure 6 taken along line VII-VII'. For a better fastening of the cannula 8, an overplaster 6 is adhered over the cannula support body 9. In this embodiment there is no need for a contact adhesive coating of the skin support surface 10.
Claims (17)
1. A fixing system for fastening catheters and cannulas, which comprises a skin film coated with a skin adhesion layer and having a cover film and an overplaster finished with a contact adhesive layer adhering to the skin film and having an overplaster cover layer.
2. A fixing system according to claim 1, wherein the layers are superimposed in sandwich-like manner and on one side are interconnected in a partial region, the overplaster cover layer becoming an intermediate separating film between the skin film and the contact adhesive layer of the overplaster.
3. A fixing system according to claim 1, wherein the skin film is a flexible, water vapour-permeable and bacteria-tight film material.
4. A fixing system according to claim 3, wherein the film material of the skin film is a natural or synthetic polymer.
5. A fixing system according to claim 4, wherein the polymer is cross-linked collagen or polyurethane.
6. A fixing system according to claim 2, wherein one or more of the skin film, the overplaster, the contact adhesive layer and the skin adhesion layer are transparent.
7. A fixing system according to claim 1, 2 or 3, wherein the surface of skin film is larger than that of overplaster.
8. A fixing system according to claim 1, 2 or 3, wherein the contact adhesive layer of overplaster adheres more strongly to the skin film than the skin adhesion layer.
9. A fixing system according to claim 2, wherein the overplaster cover layer has a separating line and optionally two removal aids, one for each portion.
10. A fixing system according to claim 1, wherein the skin film is coated with an active ingredient on one or both sides.
11. A fixing system according to claim 10, wherein the active ingredient is a bactericidal agent or the like.
12. A fixing system according to claim 1, 2 or 3, wherein the skin film additionally has an all-round, strongly contact adhering adhesive border.
13. A fixing system according to claim 1, 2 or 3, wherein the overplaster is perforated.
14. A fixing system according to claim 1, 2 or 3, wherein an elastic polymer is provided which adheres to the skin film and the cannula surface and forms a bacteria-tight seal for the insertion point.
15. A fixing system according to claim 1, wherein a cannula support body is provided such that a cannula being applied to the skin film or skin is fixed in a predetermined angular position in a reception opening.
16. A fixing system according to claim 15, wherein the cannula support body includes a contact adhesively finished support surface and a reception opening adapted to the external shape of a cannula.
17. A fixing system according to claim 15 or 16, wherein the cannula support body is a moulded article made from an elastic material which is optionally transparent.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3617882.9 | 1986-05-28 | ||
| DE3617882 | 1986-05-28 | ||
| DE19863643985 DE3643985A1 (en) | 1986-05-28 | 1986-12-22 | System for fixing catheters, cannulas or the like on the skin surface, and sterile fixing method therefor |
| DEP3643985.1 | 1986-12-22 | ||
| DEP3713114.1 | 1987-04-16 | ||
| DE3713114 | 1987-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1320888C true CA1320888C (en) | 1993-08-03 |
Family
ID=27194427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000538089A Expired - Fee Related CA1320888C (en) | 1986-05-28 | 1987-05-27 | Fixing system for fastening catheters, cannules or the like to the skin surface and process for the sterile fastening thereof |
Country Status (21)
| Country | Link |
|---|---|
| EP (1) | EP0247571B1 (en) |
| JP (1) | JPH01500326A (en) |
| AT (1) | ATE66623T1 (en) |
| AU (1) | AU612111B2 (en) |
| CA (1) | CA1320888C (en) |
| CZ (1) | CZ281517B6 (en) |
| DE (1) | DE3772453D1 (en) |
| DK (1) | DK169642B1 (en) |
| FI (1) | FI93313C (en) |
| GR (1) | GR3002617T3 (en) |
| HU (1) | HU206051B (en) |
| IE (1) | IE60248B1 (en) |
| IL (1) | IL82692A (en) |
| NO (1) | NO880300D0 (en) |
| NZ (1) | NZ220465A (en) |
| PH (1) | PH25195A (en) |
| PL (1) | PL160666B1 (en) |
| PT (1) | PT84957B (en) |
| SK (1) | SK382287A3 (en) |
| WO (1) | WO1987007164A1 (en) |
| YU (1) | YU44946B (en) |
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| US8784393B2 (en) | 2006-07-26 | 2014-07-22 | Bluesky Medical Group, Inc. | Dressing |
| US9198801B2 (en) | 2004-04-05 | 2015-12-01 | Bluesky Medical Group, Inc. | Flexible reduced pressure treatment appliance |
| US10058642B2 (en) | 2004-04-05 | 2018-08-28 | Bluesky Medical Group Incorporated | Reduced pressure treatment system |
| US10207035B2 (en) | 2004-05-21 | 2019-02-19 | Smith & Nephew, Inc. | Flexible reduced pressure treatment appliance |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8802756U1 (en) * | 1988-03-02 | 1988-04-14 | B. Braun Melsungen Ag, 3508 Melsungen, De | |
| DE3829896A1 (en) * | 1988-09-02 | 1990-03-15 | Aconvest Ag | BRACKET FOR MEDICAL INSTRUMENTS, IN PARTICULAR CATHETERS |
| US5326856A (en) * | 1992-04-09 | 1994-07-05 | Cytogen Corporation | Bifunctional isothiocyanate derived thiocarbonyls as ligands for metal binding |
| JP3696922B2 (en) * | 1995-05-12 | 2005-09-21 | 日東電工株式会社 | Catheter installation aid |
| US5637098A (en) * | 1995-08-07 | 1997-06-10 | Venetec International, Inc. | Catheter securement device |
| TW406018B (en) | 1998-05-21 | 2000-09-21 | Elan Corp Plc | Improved adhesive system for medical devices |
| GB2455962A (en) | 2007-12-24 | 2009-07-01 | Ethicon Inc | Reinforced adhesive backing sheet, for plaster |
| US8372049B2 (en) | 2008-03-05 | 2013-02-12 | Kci Licensing, Inc. | Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site |
| GB2464932B (en) * | 2008-10-28 | 2013-07-03 | Braidlock Ltd | Methods and apparatus for securing a line |
| US8814842B2 (en) | 2010-03-16 | 2014-08-26 | Kci Licensing, Inc. | Delivery-and-fluid-storage bridges for use with reduced-pressure systems |
| GB2488749A (en) | 2011-01-31 | 2012-09-12 | Systagenix Wound Man Ip Co Bv | Laminated silicone coated wound dressing |
| GB201106491D0 (en) | 2011-04-15 | 2011-06-01 | Systagenix Wound Man Ip Co Bv | Patterened silicone coating |
| CN103974679B (en) | 2011-12-16 | 2017-05-03 | 凯希特许有限公司 | Sealing systems and methods employing a switchable drape |
| US10940047B2 (en) | 2011-12-16 | 2021-03-09 | Kci Licensing, Inc. | Sealing systems and methods employing a hybrid switchable drape |
| JP6320930B2 (en) | 2011-12-16 | 2018-05-09 | ケーシーアイ ライセンシング インコーポレイテッド | Peelable medical drape |
| EP4279094A3 (en) | 2012-11-16 | 2024-02-28 | 3M Innovative Properties Company | Medical drape with pattern adhesive layers |
| GB201222770D0 (en) | 2012-12-18 | 2013-01-30 | Systagenix Wound Man Ip Co Bv | Wound dressing with adhesive margin |
| EP3038667B1 (en) | 2013-08-26 | 2019-10-09 | KCI Licensing, Inc. | Dressing interface with moisture controlling feature and sealing function |
| US10946124B2 (en) | 2013-10-28 | 2021-03-16 | Kci Licensing, Inc. | Hybrid sealing tape |
| WO2015065616A1 (en) | 2013-10-30 | 2015-05-07 | Kci Licensing, Inc. | Dressing with sealing and retention intereface |
| US10016544B2 (en) | 2013-10-30 | 2018-07-10 | Kci Licensing, Inc. | Dressing with differentially sized perforations |
| EP3062833B1 (en) | 2013-10-30 | 2019-04-17 | KCI Licensing, Inc. | Absorbent conduit and system |
| EP3513773A1 (en) | 2013-10-30 | 2019-07-24 | KCI Licensing, Inc. | Condensate absorbing and dissipating system |
| WO2015130471A1 (en) | 2014-02-28 | 2015-09-03 | Kci Licensing, Inc. | Hybrid drape having a gel-coated perforated mesh |
| US11026844B2 (en) | 2014-03-03 | 2021-06-08 | Kci Licensing, Inc. | Low profile flexible pressure transmission conduit |
| EP2921184A1 (en) | 2014-03-19 | 2015-09-23 | LTS LOHMANN Therapie-Systeme AG | Finishing plaster having improved tolerability and a long adhesive period and method for producing the same |
| WO2015168681A1 (en) | 2014-05-02 | 2015-11-05 | Kci Licensing, Inc. | Fluid storage devices, systems, and methods |
| EP3854361B8 (en) | 2014-06-05 | 2024-03-27 | Solventum Intellectual Properties Company | Dressing with fluid acquisition and distribution characteristics |
| EP3233001B1 (en) | 2014-12-17 | 2020-06-17 | KCI Licensing, Inc. | Dressing with offloading capability |
| EP3294245B1 (en) | 2015-05-08 | 2019-09-04 | KCI Licensing, Inc. | Low acuity dressing with integral pump |
| US11096830B2 (en) | 2015-09-01 | 2021-08-24 | Kci Licensing, Inc. | Dressing with increased apposition force |
| WO2017048866A1 (en) | 2015-09-17 | 2017-03-23 | Kci Licensing, Inc. | Hybrid silicone and acrylic adhesive cover for use with wound treatment |
| US10576250B2 (en) * | 2016-12-13 | 2020-03-03 | Becton, Dickinson And Company | Securement dressing for vascular access device with skin adhesive application window |
| US10987486B2 (en) | 2017-04-07 | 2021-04-27 | Becton, Dickinson And Company | Catheter securement device with window |
| EP4007660A1 (en) * | 2019-08-02 | 2022-06-08 | Nordson Corporation | Dispense tips and methods of manufacturing the same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3612265A (en) * | 1969-03-10 | 1971-10-12 | Minnesota Mining & Mfg | Adhesive bandage and envelope |
| US3718446A (en) * | 1970-02-18 | 1973-02-27 | Univ California | Pollutant-free process for producing a clean burning fuel gas from organic-containing waste materials |
| US3918446A (en) * | 1974-05-03 | 1975-11-11 | E Med Corp | Securement device for intravenous catheter and its tubing |
| US4122857A (en) * | 1977-01-25 | 1978-10-31 | Xomed Inc. | Pad for anchoring an article to the skin of a patient |
| US4333468A (en) * | 1980-08-18 | 1982-06-08 | Geist Robert W | Mesentery tube holder apparatus |
-
1987
- 1987-05-25 DE DE8787107619T patent/DE3772453D1/en not_active Expired - Lifetime
- 1987-05-25 EP EP87107619A patent/EP0247571B1/en not_active Expired - Lifetime
- 1987-05-25 AT AT87107619T patent/ATE66623T1/en not_active IP Right Cessation
- 1987-05-26 WO PCT/DE1987/000240 patent/WO1987007164A1/en active IP Right Grant
- 1987-05-26 AU AU74377/87A patent/AU612111B2/en not_active Ceased
- 1987-05-26 JP JP62503248A patent/JPH01500326A/en active Pending
- 1987-05-26 HU HU873111A patent/HU206051B/en not_active IP Right Cessation
- 1987-05-27 SK SK3822-87A patent/SK382287A3/en unknown
- 1987-05-27 PT PT84957A patent/PT84957B/en not_active IP Right Cessation
- 1987-05-27 CZ CS873822A patent/CZ281517B6/en not_active IP Right Cessation
- 1987-05-27 CA CA000538089A patent/CA1320888C/en not_active Expired - Fee Related
- 1987-05-27 NZ NZ220465A patent/NZ220465A/en unknown
- 1987-05-27 IE IE137887A patent/IE60248B1/en not_active IP Right Cessation
- 1987-05-28 YU YU970/87A patent/YU44946B/en unknown
- 1987-05-28 PH PH35315A patent/PH25195A/en unknown
- 1987-05-28 IL IL8782692A patent/IL82692A/en not_active IP Right Cessation
- 1987-05-28 PL PL1987265938A patent/PL160666B1/en unknown
-
1988
- 1988-01-25 DK DK032888A patent/DK169642B1/en not_active IP Right Cessation
- 1988-01-25 NO NO880300A patent/NO880300D0/en unknown
- 1988-01-26 FI FI880349A patent/FI93313C/en not_active IP Right Cessation
-
1991
- 1991-08-29 GR GR91401132T patent/GR3002617T3/en unknown
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9198801B2 (en) | 2004-04-05 | 2015-12-01 | Bluesky Medical Group, Inc. | Flexible reduced pressure treatment appliance |
| US10058642B2 (en) | 2004-04-05 | 2018-08-28 | Bluesky Medical Group Incorporated | Reduced pressure treatment system |
| US10105471B2 (en) | 2004-04-05 | 2018-10-23 | Smith & Nephew, Inc. | Reduced pressure treatment system |
| US10350339B2 (en) | 2004-04-05 | 2019-07-16 | Smith & Nephew, Inc. | Flexible reduced pressure treatment appliance |
| US10363346B2 (en) | 2004-04-05 | 2019-07-30 | Smith & Nephew, Inc. | Flexible reduced pressure treatment appliance |
| US10842919B2 (en) | 2004-04-05 | 2020-11-24 | Smith & Nephew, Inc. | Reduced pressure treatment system |
| US11730874B2 (en) | 2004-04-05 | 2023-08-22 | Smith & Nephew, Inc. | Reduced pressure treatment appliance |
| US10207035B2 (en) | 2004-05-21 | 2019-02-19 | Smith & Nephew, Inc. | Flexible reduced pressure treatment appliance |
| US8784393B2 (en) | 2006-07-26 | 2014-07-22 | Bluesky Medical Group, Inc. | Dressing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01500326A (en) | 1989-02-09 |
| DK32888A (en) | 1988-01-25 |
| IL82692A (en) | 1993-08-18 |
| FI880349A (en) | 1988-01-26 |
| NZ220465A (en) | 1990-11-27 |
| ATE66623T1 (en) | 1991-09-15 |
| PT84957A (en) | 1987-06-01 |
| WO1987007164A1 (en) | 1987-12-03 |
| HUT47040A (en) | 1989-01-30 |
| IL82692A0 (en) | 1987-11-30 |
| PL265938A1 (en) | 1988-05-12 |
| DE3772453D1 (en) | 1991-10-02 |
| EP0247571B1 (en) | 1991-08-28 |
| PT84957B (en) | 1990-02-08 |
| CZ281517B6 (en) | 1996-10-16 |
| FI880349A0 (en) | 1988-01-26 |
| PH25195A (en) | 1991-03-27 |
| FI93313B (en) | 1994-12-15 |
| PL160666B1 (en) | 1993-04-30 |
| SK278943B6 (en) | 1998-05-06 |
| CZ382287A3 (en) | 1996-07-17 |
| NO880300L (en) | 1988-01-25 |
| EP0247571A1 (en) | 1987-12-02 |
| SK382287A3 (en) | 1998-05-06 |
| HU206051B (en) | 1992-08-28 |
| NO880300D0 (en) | 1988-01-25 |
| DK169642B1 (en) | 1995-01-02 |
| YU97087A (en) | 1989-10-31 |
| GR3002617T3 (en) | 1993-01-25 |
| IE60248B1 (en) | 1994-06-15 |
| AU7437787A (en) | 1987-12-22 |
| YU44946B (en) | 1991-04-30 |
| AU612111B2 (en) | 1991-07-04 |
| IE871378L (en) | 1987-11-28 |
| FI93313C (en) | 1995-03-27 |
| DK32888D0 (en) | 1988-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |