CA1209546A - Orthopedic support package and method - Google Patents
Orthopedic support package and methodInfo
- Publication number
- CA1209546A CA1209546A CA000429723A CA429723A CA1209546A CA 1209546 A CA1209546 A CA 1209546A CA 000429723 A CA000429723 A CA 000429723A CA 429723 A CA429723 A CA 429723A CA 1209546 A CA1209546 A CA 1209546A
- Authority
- CA
- Canada
- Prior art keywords
- bag
- orthopedic support
- orthopedic
- package
- press
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/10—Pillows
-
- 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
- A61F15/00—Auxiliary appliances for wound dressings; Dispensing containers for dressings or bandages
-
- 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
- A61F15/00—Auxiliary appliances for wound dressings; Dispensing containers for dressings or bandages
- A61F15/001—Packages or dispensers for bandages, cotton balls, drapes, dressings, gauze, gowns, sheets, sponges, swabsticks or towels
-
- 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
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/07—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Mechanical Engineering (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Nursing (AREA)
- Otolaryngology (AREA)
- Pulmonology (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Vacuum Packaging (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
Abstract
ORTHOPEDIC SUPPORT PACKAGE AND METHOD A package for containing an orthopedic support constructed of open cell foam material may comprise a bag constructed of heat sealable thermoplastic multilayered film which is sealed along a single open edge after insertion of the orthopedic support therethrough into the bag. The orthopedic support is differentially compressed to such an extent as to reduce an irregular height dimension by a major amount with evacuation of a corresponding amount of air from the hag through the open edge prior to application of the heat seal along the open edge. An evacuated marginal portion of the bag extends outwardly about the orthopedic support by an amount corresponding to the reduction in height of the orthopedic support and results from the partial vacuum in the bag and the tendency of the open cell foam to rebound. The differential compression is obtained by using a press in compressing relationship with a press bed, applying compression to an extent which may be predetermined by utilizing a suitable stop means for limiting relative movement of the press members toward each other.
Description
~Z~95~
ORTHOP~DIC SUPPORT PACKAGE AND METHOD
Background of the Invention Storage is a major problem in connection with supplyiny foam orthopedic supports for patients of hospitals and other healthcare facilities due to the hul~y nature of such supports~ It is difficult to carry the foam supports, for example, upon the already crowded carts which are utilized by nurses and other attendants to supply patients with medication and other needs. It has even been found that patients who would be best treated with foam orthopedic supports are denied their use becaùse of the difficulties in supplying them to thP patients.
The most oommonly used method of packaging the foam orthopedic s~pports which have been in use here-tofore is through the use o heat shrinkable thermoplastic material. While such material affords an attractive sanitary package, there is little or no reduction in bulk.
~The prior art relating to the packaging of foam cushion~
includes United States Letters Patent No. 3,246D443, but this patent contemplates the use of individual sheets be~ween which the xegular shaped oam cushion is sandwiched.
The regular shape~ oam cushion with the thermoplastic sheets above and below on either side is compressed between press members acting a~ a bed ana a platen. The difficulty is that a seal is required on all sides of the package, and -~ while a uniformly aligned smoothly sealed package is ~ 9~6 ~ illustrated in the patent, it has been found that fxom a practical standpoi~t in commer~ial packaging involving sub-stantial numbers, such a package is difficult to achieve~
Further efforts include those exemplified by ~nited States Letters Patent No. 3,968,620 wherein an air suction apparatus is used to evacuate the air from a package contai~ing regularly shaped compressible material. This suction system is perhaps the most apparent solution to the problem, but the degree of compression or reduction in size of the foam article is not sufficient to achieve the desired results when supplying orthopedic foam supports.
Accordingly, the prese~t invention seeks to supply an orthopedic support package wherein the foam orthopedic support may be reduced in volume to such an extent as to make its storage and presence for use by a patient readily available.
Also the present invention seeks to provide a sanitary means of packaging an orthopedic support which will provide a longer storage shelf lie together with convenience in dispensing for supplying in health-care ~acil;ties to orthopedic patients.
Still further tlle in~ention seeks to provide a method of forming a package for reduc;ng the size of the orthopedic supports which may be relatively inexpensive and practical from the standpoint of providing reduced storage and space requirements to facilitate the supply;ng of orthopedic supports of the foam type to orthopedic patients.
ORTHOP~DIC SUPPORT PACKAGE AND METHOD
Background of the Invention Storage is a major problem in connection with supplyiny foam orthopedic supports for patients of hospitals and other healthcare facilities due to the hul~y nature of such supports~ It is difficult to carry the foam supports, for example, upon the already crowded carts which are utilized by nurses and other attendants to supply patients with medication and other needs. It has even been found that patients who would be best treated with foam orthopedic supports are denied their use becaùse of the difficulties in supplying them to thP patients.
The most oommonly used method of packaging the foam orthopedic s~pports which have been in use here-tofore is through the use o heat shrinkable thermoplastic material. While such material affords an attractive sanitary package, there is little or no reduction in bulk.
~The prior art relating to the packaging of foam cushion~
includes United States Letters Patent No. 3,246D443, but this patent contemplates the use of individual sheets be~ween which the xegular shaped oam cushion is sandwiched.
The regular shape~ oam cushion with the thermoplastic sheets above and below on either side is compressed between press members acting a~ a bed ana a platen. The difficulty is that a seal is required on all sides of the package, and -~ while a uniformly aligned smoothly sealed package is ~ 9~6 ~ illustrated in the patent, it has been found that fxom a practical standpoi~t in commer~ial packaging involving sub-stantial numbers, such a package is difficult to achieve~
Further efforts include those exemplified by ~nited States Letters Patent No. 3,968,620 wherein an air suction apparatus is used to evacuate the air from a package contai~ing regularly shaped compressible material. This suction system is perhaps the most apparent solution to the problem, but the degree of compression or reduction in size of the foam article is not sufficient to achieve the desired results when supplying orthopedic foam supports.
Accordingly, the prese~t invention seeks to supply an orthopedic support package wherein the foam orthopedic support may be reduced in volume to such an extent as to make its storage and presence for use by a patient readily available.
Also the present invention seeks to provide a sanitary means of packaging an orthopedic support which will provide a longer storage shelf lie together with convenience in dispensing for supplying in health-care ~acil;ties to orthopedic patients.
Still further tlle in~ention seeks to provide a method of forming a package for reduc;ng the size of the orthopedic supports which may be relatively inexpensive and practical from the standpoint of providing reduced storage and space requirements to facilitate the supply;ng of orthopedic supports of the foam type to orthopedic patients.
-2-~.
Summary of the Invention It has been found that satisfactory orthopedic packages of reduced size may be obtained by utilizing a multi-layered thermoplastic bag which is sealed except for a single opening to accommodate reception of the orthopedic support within the bag. The orthopedic support is placed within the bag which is then pressed within a suitable compression applying means such as a press having members acting as a platen and as a bed. After compression has been applied so as to differentially compress the height dimensions of the irregularly shaped orthopedic support, and evacuating air from the bag, the sealing along the single open edge may be accomplished conveniently, and the marginal portions in that area trimmed away as by cutting. When the compressive action of the press is removed, an evacuated flat marginal portion of the bag extends outwardly entirely about the orthopedic support by an amount resulting from the reduction in height of the support due to the vacuum in the sealed bag and the tendency of the foam article to expand.
The invention in one aspect pertains to the met~od of packaging an orthopedic support comprising providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular height profile and a highly bulky configuration and providing a thermoplastic bag constructed of heat sealable thermoplastic film having a sufficient shelf life to prevent leaking and seeping of air affording storage of the package in a healthcare facility for extended periods of time, the bag having presealed edges but ~20!9~i~6 providing an open edge portion thereof for insertion of the orthopedic support therethrough, compressing the orthopedic support minimizing the bag size required, placing the orthopedic support thus compresed within the bag, differentially compressing the orthopedic support within the bag to such an extent as to reduce the substantial profile and bulk configuration by a major amount to a generally uniform flat configuration with e~acuation of a corresponding amount of air from the bag by urging a platen of a press into compressing relation with a bed of the press by a predetermined amount, placing a heat seal along the open edge portion after the compression and evacuation, and releasing the compressing action of the press after heat sealing the edge portionO
It is desirable but not necessary, that some mechanical means be employed for precompressing the foam article so that relatively small bags may be utilized thus conserving on the thermoplastic bag material and pexmitting a less costly process. This precompression may be obtained, for example, by forcing the foam article between constricting members which hold the bag on the outside thereof to facilitate reception through the open end of the bag of the precompressed orthopedic support.
"`'~'1 .
srief Description of the Drawings The construction designed to carry out the invention will be hereinafter described, together with other ~eatures thereof.
The i~vention will ~e more readily understood from a reading of the following specification ~nd by reference to the accompanying drawings forming a part thereof, wherein an example oÆ the invention is shown and wherein:
Figure 1 i~ a sectional side elevation illustrating a suitable press and orthopedic support pac~age in process of ~eing formed therein in accordance with the invention, Figure 2 is an enlarged perspective view ~roadly illustraæing the press and orthopedic support package of Figure 1~
Figure 3 is a still further enlarged sec~ional elevation through an edge por~ion of ~he press and support package u~ili2ed in Figure 1, Figure 4 is a perspective v;ew of an orthopedic support package in the form o a cradle boot within a thermoplastic bag prior to compression, .
Figure 5 is a plan view of a support package ~ormed from the article illustrated in Figure 4, Figure 6 is a perspective view o~ an orthopedic support in the form of a cast elevator and the like con-tained withîn a thermoplastic bag prior to compression, -" ~L~9~6 Figure 7 is a pla~ view illustrating the support packase formed after compression of the article illustrated in Figure 6, Figure 7A is an end view of the package illustrated ' in Figure.7, Figure 8 is a perspective view illustrating a - body aligner carried within a thermoplastic bay prior to compression, ~igure 9 is an enlarge~l perspective view illustrating the package comprising the body aligner illustrated in Figure 8, ~ igure 10 is a~perspective view illustrating a foot drop support and the like contained within a thermo-plastic heat sealable bag prior to co~pression and sealing~ and Figure 11 is an enl~rged pla~ view illustrating a package containing ~he article.
5~16 Description of a Preerred Embodiment The drawinys illustrate an orthopedic support A constructed of resilient synthetic open cell foam material having a substantlal, albeit irregular height dimension with air entrained therein. A bag B is constructed of heat seal-able thermoplastic multi~layered film sealed along its edges except or a single open edge portion thereof for insertion of said orthopedic support. The orthopedic support is differentially compressed to such an extent as to reduce a dimension thereof by a major amount with eYacuation of a corresponaing amount of air from the bag. A heat seal C
is placed along the single open edge portion placed th rein ater the compression and evacuationO An evacuated marginal portio~ D of the bag extends outwar~ly about the orthopedic support by an amount resulting fxom the reduction in height of the orthopedic support. Thus 9 the package may be con-veniently stored and the orthopedic support dispensed therefrom by a healthcare acility by releasing same from said bag permitting return of the orthopedic support sub-2q stan~ially to its original full unrestrained size when neededfor use by an orthopedic patlentO The dif~erential com--pression described above is obtained by uxging a cushioned platen ~ of a press into compressing relationship with a smooth bed of the press to an extent which may be determined a ~y a suitable mechanical stop. The package is temporarily stored to test for leaXs and is then shipped to the customex.
~Z~9~
' Figure 1 illustrate~ a press which includes a lower frame member broadly designated at 10 for carrying a bed which includes a lower portion 11 which may carry built up wooden member 12 for accommodating-a smo~th planer plastic surface. .The platen is illustrated as including a rigi~
member 14 having compressible portions 15 which may be constructed as from foam.
The press includes an upper fram~, broadly designa~ed at 16 which supports a fluid operated cylinder 17 which~ thxough the rod 18 operates the platen E. Suitable mechanical stop means are employed for limiting the down-ward movement of ~he press platen member, but t~ese stops are convèntional and are not shown except insofar as they may include portions of the seali~g means which come together and ~hich are d~scribe~ belo~.
A second hydraulic Qr air operate~ oylinder 19 has a piston rod 20 for owering a front gripping member 21 which bears against a first portion 22 ~f a U-~haped member which defines an opening 23 therein. The U-shaped member 22 at its back leg carries a wire or other suita~le heating element 24 which e~gages a back member 25 opposite the ~ember 21 for effecting a heat seal~C. The heat sealing operation occurs immediately following compression ~y the lowering of the platen E by actuation of the cylinder 17 by lowering of the memb~rs 21 and ~5 by operatio~ of the cylinaer 19 which follows evaauationO Together with ~9~
the sealing operation A, a transversely movable knife 26 is provided for trimming of an edge 27 of the bag, primarily for eslthe~ic reasorls, but also to provide a uniform pacXage edge. Xnives of the type illustrated at 26 are common expedients in various sealing operationsO
By reference to Figure 2, it will be noted that, after the sealing operation forming the seal C, the k~ife 26 moves transversely in the direction of the arrow to trim off the edge 27. It will be fuxther noted that auring and prior to compression, the edges of the bag are expanded or substantially V-shaped, but by xeference to Figur~ 3, it will be noted that after re val of the com-pression by raising the platen E, that the edge portions of the bag are sucked together because of the vacuum obtained within the package and because of ~xpansion of the foam member A after remov~l of ~he compres~ionO The edges B thus form~d are significant in that ~hey may be-punctured by an attendant which permits full expa~sion . o~ ~he orthopedic suppoxt within ~he bag prior to tearing awa~ the bag for u~e. Thu~, a limited sanitary storage in.expanaed condition is possible and if ~his is not desired, the bag may be easily removed at once without damage to the orthopedic supportO
It has been ound that it is possible to reduce the height dimension of the open cell type polyurethane foam materials which ar~ often usea in orthopedic supports by an amount ~n excess of about 80%~ or to approximately a 6 to 1 reduction of the unxestricted he~ght of the ~2~9S4~;
.,. . ;
orthopedic 'support~ Such foa~ material has a densi~y on the order of about l.Ç3 pound~ per cubic foot, and an indentation load defle~tion of about 34 to 38. It is important that the material of the thermpolastic bag be capable of being heat sealed and that it h~ve sufficient shelf life to prevent leaking and seepaye of air or affording a suitable shelf life.
Such material has been found to be of a multi~layered thermoplastic film material such as designated as B-620 bag supplied by Cryovac. This multi-layer sealing bag is designed ~pecifically for vacuum packaging of fresh meat, bu~ it has been found ~hat this bag may serve the purpose of containing the orthopedic support as des~ribed herei~. It is not believed at present that the heat shrin~able material often employed in wrapping meat would be suitable for the purposes d~scussed hexein.
By way of exampleO variou6-specific foam ortho-pedi~ support articles and th~ir pacXages constructed in accordance with the invention æ e illustrated. The craale boo~ illustratea in Figures 4 and 5 is more fully describea in United Sta~es Letters Patent No. 4,135,S04.
~t will be observed that the presealed e~ges as illustrated at 30 are somewhat irregular after packagi~g ana sealing, while ~he seal C is fairly regular in its alig~ment. The article contai~ed wi~hin the marginal portions which extend thereabout ana which contain collapsible portions of the bag ~erYe to retain the orthopedic support in compressed relation. The height aimension ~s reduced while the general outline remains fairly unifoxm except that the thic~-: ened portions of thè article extend outwardly as illustrated at 31. ~he vert;cal opening is somewhat elongated as illustrated at 32. The article i5 inserted as through an ~pen end of the bag illuskratea at 33. The height reduction ; of the cradle boot, for example, is approximatsly 83%. In other words, the maximum nine inch dimension is reduced to appxoximately 1 and 1/2 inches.
Figures 6 ana 7 illustrate the packaging of a cast elevator which is of khe type more fully illustrated in United States Letters Patent No. 3,946,451. The open end of the bag is illustrated ait 33 and $he thickened portions of the article may be observed as at 3-1 in Figures 7 and 7A.. These raised portions 34 w~ic:h are barely perseptible after the height dimension has been dif~erentially reduced, correspond to the rais~a side portions 34a in Figure 6.
~ igure~ 8 and 9 iilustrate the packaging o~E a body aligner o~ the type more fully il~ustrated in United States Letters Paterit No. 3,938,205. The l:~ody aligner has its 20 major height ~imension culmi~ating in the apex portion ~
illustrate~ at 35 . The apex pc>rtior~ is barely perceptibl e being illustrated at 35a in Figure 9., The irregular edge portions as illustr~ted at 36 ~ do not reveal themselves ~o any perceptible extent in 'che firlal package illustrated in Figure 9. The packa~ing o~E a iEoot arop support is illustrated in Figures 10 and 11 wherein the cuff portion 37- i~
- ~2Q~5~6 illu~trated in compressed form as at. 37a in Figure 11, ~arrying thereabout~ a ~ap 38 illustrated in compressed foxm as at 33a ill Figure 11. ~he :~oot drop support i~
more fully illustrated in United States Letters Pate~t No.
Summary of the Invention It has been found that satisfactory orthopedic packages of reduced size may be obtained by utilizing a multi-layered thermoplastic bag which is sealed except for a single opening to accommodate reception of the orthopedic support within the bag. The orthopedic support is placed within the bag which is then pressed within a suitable compression applying means such as a press having members acting as a platen and as a bed. After compression has been applied so as to differentially compress the height dimensions of the irregularly shaped orthopedic support, and evacuating air from the bag, the sealing along the single open edge may be accomplished conveniently, and the marginal portions in that area trimmed away as by cutting. When the compressive action of the press is removed, an evacuated flat marginal portion of the bag extends outwardly entirely about the orthopedic support by an amount resulting from the reduction in height of the support due to the vacuum in the sealed bag and the tendency of the foam article to expand.
The invention in one aspect pertains to the met~od of packaging an orthopedic support comprising providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular height profile and a highly bulky configuration and providing a thermoplastic bag constructed of heat sealable thermoplastic film having a sufficient shelf life to prevent leaking and seeping of air affording storage of the package in a healthcare facility for extended periods of time, the bag having presealed edges but ~20!9~i~6 providing an open edge portion thereof for insertion of the orthopedic support therethrough, compressing the orthopedic support minimizing the bag size required, placing the orthopedic support thus compresed within the bag, differentially compressing the orthopedic support within the bag to such an extent as to reduce the substantial profile and bulk configuration by a major amount to a generally uniform flat configuration with e~acuation of a corresponding amount of air from the bag by urging a platen of a press into compressing relation with a bed of the press by a predetermined amount, placing a heat seal along the open edge portion after the compression and evacuation, and releasing the compressing action of the press after heat sealing the edge portionO
It is desirable but not necessary, that some mechanical means be employed for precompressing the foam article so that relatively small bags may be utilized thus conserving on the thermoplastic bag material and pexmitting a less costly process. This precompression may be obtained, for example, by forcing the foam article between constricting members which hold the bag on the outside thereof to facilitate reception through the open end of the bag of the precompressed orthopedic support.
"`'~'1 .
srief Description of the Drawings The construction designed to carry out the invention will be hereinafter described, together with other ~eatures thereof.
The i~vention will ~e more readily understood from a reading of the following specification ~nd by reference to the accompanying drawings forming a part thereof, wherein an example oÆ the invention is shown and wherein:
Figure 1 i~ a sectional side elevation illustrating a suitable press and orthopedic support pac~age in process of ~eing formed therein in accordance with the invention, Figure 2 is an enlarged perspective view ~roadly illustraæing the press and orthopedic support package of Figure 1~
Figure 3 is a still further enlarged sec~ional elevation through an edge por~ion of ~he press and support package u~ili2ed in Figure 1, Figure 4 is a perspective v;ew of an orthopedic support package in the form o a cradle boot within a thermoplastic bag prior to compression, .
Figure 5 is a plan view of a support package ~ormed from the article illustrated in Figure 4, Figure 6 is a perspective view o~ an orthopedic support in the form of a cast elevator and the like con-tained withîn a thermoplastic bag prior to compression, -" ~L~9~6 Figure 7 is a pla~ view illustrating the support packase formed after compression of the article illustrated in Figure 6, Figure 7A is an end view of the package illustrated ' in Figure.7, Figure 8 is a perspective view illustrating a - body aligner carried within a thermoplastic bay prior to compression, ~igure 9 is an enlarge~l perspective view illustrating the package comprising the body aligner illustrated in Figure 8, ~ igure 10 is a~perspective view illustrating a foot drop support and the like contained within a thermo-plastic heat sealable bag prior to co~pression and sealing~ and Figure 11 is an enl~rged pla~ view illustrating a package containing ~he article.
5~16 Description of a Preerred Embodiment The drawinys illustrate an orthopedic support A constructed of resilient synthetic open cell foam material having a substantlal, albeit irregular height dimension with air entrained therein. A bag B is constructed of heat seal-able thermoplastic multi~layered film sealed along its edges except or a single open edge portion thereof for insertion of said orthopedic support. The orthopedic support is differentially compressed to such an extent as to reduce a dimension thereof by a major amount with eYacuation of a corresponaing amount of air from the bag. A heat seal C
is placed along the single open edge portion placed th rein ater the compression and evacuationO An evacuated marginal portio~ D of the bag extends outwar~ly about the orthopedic support by an amount resulting fxom the reduction in height of the orthopedic support. Thus 9 the package may be con-veniently stored and the orthopedic support dispensed therefrom by a healthcare acility by releasing same from said bag permitting return of the orthopedic support sub-2q stan~ially to its original full unrestrained size when neededfor use by an orthopedic patlentO The dif~erential com--pression described above is obtained by uxging a cushioned platen ~ of a press into compressing relationship with a smooth bed of the press to an extent which may be determined a ~y a suitable mechanical stop. The package is temporarily stored to test for leaXs and is then shipped to the customex.
~Z~9~
' Figure 1 illustrate~ a press which includes a lower frame member broadly designated at 10 for carrying a bed which includes a lower portion 11 which may carry built up wooden member 12 for accommodating-a smo~th planer plastic surface. .The platen is illustrated as including a rigi~
member 14 having compressible portions 15 which may be constructed as from foam.
The press includes an upper fram~, broadly designa~ed at 16 which supports a fluid operated cylinder 17 which~ thxough the rod 18 operates the platen E. Suitable mechanical stop means are employed for limiting the down-ward movement of ~he press platen member, but t~ese stops are convèntional and are not shown except insofar as they may include portions of the seali~g means which come together and ~hich are d~scribe~ belo~.
A second hydraulic Qr air operate~ oylinder 19 has a piston rod 20 for owering a front gripping member 21 which bears against a first portion 22 ~f a U-~haped member which defines an opening 23 therein. The U-shaped member 22 at its back leg carries a wire or other suita~le heating element 24 which e~gages a back member 25 opposite the ~ember 21 for effecting a heat seal~C. The heat sealing operation occurs immediately following compression ~y the lowering of the platen E by actuation of the cylinder 17 by lowering of the memb~rs 21 and ~5 by operatio~ of the cylinaer 19 which follows evaauationO Together with ~9~
the sealing operation A, a transversely movable knife 26 is provided for trimming of an edge 27 of the bag, primarily for eslthe~ic reasorls, but also to provide a uniform pacXage edge. Xnives of the type illustrated at 26 are common expedients in various sealing operationsO
By reference to Figure 2, it will be noted that, after the sealing operation forming the seal C, the k~ife 26 moves transversely in the direction of the arrow to trim off the edge 27. It will be fuxther noted that auring and prior to compression, the edges of the bag are expanded or substantially V-shaped, but by xeference to Figur~ 3, it will be noted that after re val of the com-pression by raising the platen E, that the edge portions of the bag are sucked together because of the vacuum obtained within the package and because of ~xpansion of the foam member A after remov~l of ~he compres~ionO The edges B thus form~d are significant in that ~hey may be-punctured by an attendant which permits full expa~sion . o~ ~he orthopedic suppoxt within ~he bag prior to tearing awa~ the bag for u~e. Thu~, a limited sanitary storage in.expanaed condition is possible and if ~his is not desired, the bag may be easily removed at once without damage to the orthopedic supportO
It has been ound that it is possible to reduce the height dimension of the open cell type polyurethane foam materials which ar~ often usea in orthopedic supports by an amount ~n excess of about 80%~ or to approximately a 6 to 1 reduction of the unxestricted he~ght of the ~2~9S4~;
.,. . ;
orthopedic 'support~ Such foa~ material has a densi~y on the order of about l.Ç3 pound~ per cubic foot, and an indentation load defle~tion of about 34 to 38. It is important that the material of the thermpolastic bag be capable of being heat sealed and that it h~ve sufficient shelf life to prevent leaking and seepaye of air or affording a suitable shelf life.
Such material has been found to be of a multi~layered thermoplastic film material such as designated as B-620 bag supplied by Cryovac. This multi-layer sealing bag is designed ~pecifically for vacuum packaging of fresh meat, bu~ it has been found ~hat this bag may serve the purpose of containing the orthopedic support as des~ribed herei~. It is not believed at present that the heat shrin~able material often employed in wrapping meat would be suitable for the purposes d~scussed hexein.
By way of exampleO variou6-specific foam ortho-pedi~ support articles and th~ir pacXages constructed in accordance with the invention æ e illustrated. The craale boo~ illustratea in Figures 4 and 5 is more fully describea in United Sta~es Letters Patent No. 4,135,S04.
~t will be observed that the presealed e~ges as illustrated at 30 are somewhat irregular after packagi~g ana sealing, while ~he seal C is fairly regular in its alig~ment. The article contai~ed wi~hin the marginal portions which extend thereabout ana which contain collapsible portions of the bag ~erYe to retain the orthopedic support in compressed relation. The height aimension ~s reduced while the general outline remains fairly unifoxm except that the thic~-: ened portions of thè article extend outwardly as illustrated at 31. ~he vert;cal opening is somewhat elongated as illustrated at 32. The article i5 inserted as through an ~pen end of the bag illuskratea at 33. The height reduction ; of the cradle boot, for example, is approximatsly 83%. In other words, the maximum nine inch dimension is reduced to appxoximately 1 and 1/2 inches.
Figures 6 ana 7 illustrate the packaging of a cast elevator which is of khe type more fully illustrated in United States Letters Patent No. 3,946,451. The open end of the bag is illustrated ait 33 and $he thickened portions of the article may be observed as at 3-1 in Figures 7 and 7A.. These raised portions 34 w~ic:h are barely perseptible after the height dimension has been dif~erentially reduced, correspond to the rais~a side portions 34a in Figure 6.
~ igure~ 8 and 9 iilustrate the packaging o~E a body aligner o~ the type more fully il~ustrated in United States Letters Paterit No. 3,938,205. The l:~ody aligner has its 20 major height ~imension culmi~ating in the apex portion ~
illustrate~ at 35 . The apex pc>rtior~ is barely perceptibl e being illustrated at 35a in Figure 9., The irregular edge portions as illustr~ted at 36 ~ do not reveal themselves ~o any perceptible extent in 'che firlal package illustrated in Figure 9. The packa~ing o~E a iEoot arop support is illustrated in Figures 10 and 11 wherein the cuff portion 37- i~
- ~2Q~5~6 illu~trated in compressed form as at. 37a in Figure 11, ~arrying thereabout~ a ~ap 38 illustrated in compressed foxm as at 33a ill Figure 11. ~he :~oot drop support i~
more fully illustrated in United States Letters Pate~t No.
3,903,873~ While specific or~hopedic supports are illustratea for illus~rakive purposes, any open cell foam orthopedic support may be thus packaged.
It is important that, af ter packaging, the foam orthopedic supports be stored fox about a day or two .
10 to determine whether or not there is any leakage. If there is arly sllbstantial expansion of the package during this period, ~he supports are returned for repackaging prior to shipme~t and use by the customer. It is also significant that while the step of differentially compressing ~he or~hopedic supports iq taking place, that a yieldable substantially uni~orm ~orce is applied on one side of .
the orthopedic support by the planer foam bed illustrated upon ~he platen against the smooth surfa~e on the other side o the orthopedic support which is furnished by the sub~tantially rigid wooden planar surface bensath the smooth plastic ~hee~. Such an application of force a~roi~s lea~cage through partial or complete plmcturing oi~
the plas~ic bag~. The yieldable member may be carried by the bed and the smooth ~heet by the platen if preferred.
While a pxeferred embodiment of the invention has ~een describe~ using specifi~ terms, such aescription i~
-~or illustr~tive purposes only and it is to b~ understood that change~ and variations may be made without departing from the spixit or scope of the following! claims.
It is important that, af ter packaging, the foam orthopedic supports be stored fox about a day or two .
10 to determine whether or not there is any leakage. If there is arly sllbstantial expansion of the package during this period, ~he supports are returned for repackaging prior to shipme~t and use by the customer. It is also significant that while the step of differentially compressing ~he or~hopedic supports iq taking place, that a yieldable substantially uni~orm ~orce is applied on one side of .
the orthopedic support by the planer foam bed illustrated upon ~he platen against the smooth surfa~e on the other side o the orthopedic support which is furnished by the sub~tantially rigid wooden planar surface bensath the smooth plastic ~hee~. Such an application of force a~roi~s lea~cage through partial or complete plmcturing oi~
the plas~ic bag~. The yieldable member may be carried by the bed and the smooth ~heet by the platen if preferred.
While a pxeferred embodiment of the invention has ~een describe~ using specifi~ terms, such aescription i~
-~or illustr~tive purposes only and it is to b~ understood that change~ and variations may be made without departing from the spixit or scope of the following! claims.
Claims (9)
1. The method of packaging an orthopedic support comprising:
providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular height profile and a highly bulky configuration;
providing a thermoplastic bag constructed of heat sealable thermoplastic film having a sufficient shelf life to prevent leaking and seeping of air affording storage of said package in a healthcare facility for extended periods of time, said bag having presealed edges but providing an open edge portion thereof for insertion of said orthopedic support therethrough;
compressing said orthopedic support minimizing the bag size required;
placing said orthopedic support thus compressed within said bag, differentially compressing said orthopedic support within said bag to such an extent as to reduce said substantial profile and bulk configuration by a major amount to a generally uniform flat configuration with evacuation of a corresponding amount of air from said bag by urging a platen of a press into compressing relation with a bed of the press by a predetermined amount;
placing a heat seal along said open edge portion after said compression and evacuation; and releasing the compressing action of said press after heat sealing said edge portion.
providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular height profile and a highly bulky configuration;
providing a thermoplastic bag constructed of heat sealable thermoplastic film having a sufficient shelf life to prevent leaking and seeping of air affording storage of said package in a healthcare facility for extended periods of time, said bag having presealed edges but providing an open edge portion thereof for insertion of said orthopedic support therethrough;
compressing said orthopedic support minimizing the bag size required;
placing said orthopedic support thus compressed within said bag, differentially compressing said orthopedic support within said bag to such an extent as to reduce said substantial profile and bulk configuration by a major amount to a generally uniform flat configuration with evacuation of a corresponding amount of air from said bag by urging a platen of a press into compressing relation with a bed of the press by a predetermined amount;
placing a heat seal along said open edge portion after said compression and evacuation; and releasing the compressing action of said press after heat sealing said edge portion.
2. The method of packaging and dispensing an orthopedic support comprising:
providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular height profile and a highly bulky configuration;
providing a thermoplastic bag constructed of heat sealable thermoplastic multi-layered film having a sufficient shelf life to prevent leaking and seeping of air affording storage of said package in a healthcare facility for extended periods of time, said bag having presealed edges but providing an open edge portion thereof for insertion of said orthopedic support therethrough;
placing said orthopedic support within said bag;
differentially compressing said orthopedic support within said bag to such an extent as to reduce said substantial profile and bulk configuration by a major amount to a generally uniform flat configuration with evacuation of a corresponding amount of air from said bag by urging a platen of a press into compressing relation with a bed of the press by a predetermined amount;
placing a heat seal along said single open edge portion after said compression and evacuation and releasing the compressing action of said press after heat sealing said edge portion resulting in the formation Of an evacuated marginal portion of said bag extending outwardly about said orthopedic support by an amount corresponding generally to the reduction in height of said orthopedic support forming a package;
whereby said package may be stored by a healthcare facility in said compressed generally uniform flat configuration until such time as utilized by an orthopedic patient at said facility and dispensed at said time of utilization by releasing compression in said bag and said orthopedic support compressed therein permitting return of said orthopedic support sub-stantially to its original full unrestrained profile and configuration when needed for use by an orthopedic patient.
providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular height profile and a highly bulky configuration;
providing a thermoplastic bag constructed of heat sealable thermoplastic multi-layered film having a sufficient shelf life to prevent leaking and seeping of air affording storage of said package in a healthcare facility for extended periods of time, said bag having presealed edges but providing an open edge portion thereof for insertion of said orthopedic support therethrough;
placing said orthopedic support within said bag;
differentially compressing said orthopedic support within said bag to such an extent as to reduce said substantial profile and bulk configuration by a major amount to a generally uniform flat configuration with evacuation of a corresponding amount of air from said bag by urging a platen of a press into compressing relation with a bed of the press by a predetermined amount;
placing a heat seal along said single open edge portion after said compression and evacuation and releasing the compressing action of said press after heat sealing said edge portion resulting in the formation Of an evacuated marginal portion of said bag extending outwardly about said orthopedic support by an amount corresponding generally to the reduction in height of said orthopedic support forming a package;
whereby said package may be stored by a healthcare facility in said compressed generally uniform flat configuration until such time as utilized by an orthopedic patient at said facility and dispensed at said time of utilization by releasing compression in said bag and said orthopedic support compressed therein permitting return of said orthopedic support sub-stantially to its original full unrestrained profile and configuration when needed for use by an orthopedic patient.
3. The method set forth in claim 2, including storing said package temporarily to check for leakage of the bag, and then supplying said package for storage by said healthcare facility.
4. The method of packaging and dispensing an orthopedic support comprising:
providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular (claim 4 cont'd) height profile and a highly bulky configuration;
providing a thermoplastic bag constructed of heat sealable thermoplastic multi-layered film having a sufficient shelf life to prevent leaking and seeping of air affording storage of said package in a healthcare facility for extended periods of time, said bag being presealed along its edges but providing an open edge portion thereof for insertion of said orthopedic support therethrough;
placing said orthopedic support within said bag;
differentially compressing said orthopedic support within said bag to such an extent as to reduce said substantial profile and bulk configuration by a major amount to a generally uniform flat configuration with evacuation of a corresponding amount of air from said bag by utilizing fluid pressure to urge a platen of a press into compressing relation with a bed of the press by a predetermined amount;
placing a heat seal along said single open edge portion after said compression and evacuation;
releasing the compressing action of said press after heat sealing said edge portion resulting in the formation of an evacuated marginal portion of said bag extending outwardly about said orthopedic support by an amount corresponding to the reduction in height of said orthopedic support forming a package;
storing said package by a healthcare facility in said compressed generally uniform flat configuration until such time as utilized by an orthopedic patient at said facility;
and dispensing said product at said time of utilization by releasing compression in said bag and said orthopedic support compressed therein permitting return of said orthopedic support substantially to its original full unrestrained profile and configuration when needed for use by an orthopedic patient.
providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular (claim 4 cont'd) height profile and a highly bulky configuration;
providing a thermoplastic bag constructed of heat sealable thermoplastic multi-layered film having a sufficient shelf life to prevent leaking and seeping of air affording storage of said package in a healthcare facility for extended periods of time, said bag being presealed along its edges but providing an open edge portion thereof for insertion of said orthopedic support therethrough;
placing said orthopedic support within said bag;
differentially compressing said orthopedic support within said bag to such an extent as to reduce said substantial profile and bulk configuration by a major amount to a generally uniform flat configuration with evacuation of a corresponding amount of air from said bag by utilizing fluid pressure to urge a platen of a press into compressing relation with a bed of the press by a predetermined amount;
placing a heat seal along said single open edge portion after said compression and evacuation;
releasing the compressing action of said press after heat sealing said edge portion resulting in the formation of an evacuated marginal portion of said bag extending outwardly about said orthopedic support by an amount corresponding to the reduction in height of said orthopedic support forming a package;
storing said package by a healthcare facility in said compressed generally uniform flat configuration until such time as utilized by an orthopedic patient at said facility;
and dispensing said product at said time of utilization by releasing compression in said bag and said orthopedic support compressed therein permitting return of said orthopedic support substantially to its original full unrestrained profile and configuration when needed for use by an orthopedic patient.
5. The method set forth in claim 4, wherein the step of differentially compressing is continued until the height is reduced by an amount in excess of about 80%.
6. The method set forth in claim 4, wherein said step of differentially compressing said orthopedic support includes applying a yieldable substantially uniform force on one side of said orthopedic support against a smooth surface on the other side of said orthopedic support.
7. The method set forth in claim 4, including storing said package temporarily to check for leakage of the bag, and then supplying said package for storage by said healthcare facility.
8. The method of claim 4 including compressing said orthopedic support prior to placing said support within said bag further minimizing the bag size required and final package size.
9. The method of packaging an orthopedic support facilitating storage and dispensing of the orthopedic support comprising:
providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular height profile and a highly bulky configuration;
(claim 9 cont'd) providing a thermoplastic bag constructed of heat sealable thermoplastic multi-layered film having a sufficient shelf life to prevent leaking and seeping of air affording storage of said package in a healthcare facility for extended periods of time, said bag having presealed edges but providing an open edge portion thereof for insertion of said orthopedic support therethrough;
placing said orthopedic support within said bag;
differentially compressing said orthopedic support within said bag to such an extent as to reduce said substantial profile and bulk configuration of a major amount to a generally uniform flat configuration of irregular outline with evacuation of a corresponding amount of air from said bag by urging a platen of a press into compressing relation with a bed of the press by a predetermined amount;
placing a heat seal along said open edge portion after said compression and evacuation but while maintaining said platen in said compressing relation;
forming an evacuated marginal portion of said bag extending outwardly entirely about said orthopedic support by an amount corresponding to the reduction in height of said orthopedic support by partial expansion of the foam material caused by releasing the compressing action of said press after heat sealing said edge portion forming a package;
whereby said package may be stored by a healthcare facility in said compressed generally uniform flat configuration until such time as utilized by an orthopedic patient at said facility; and whereby said product may be dispensed at said (claim 9 cont'd) time of utilization by releasing compression in said bag and said orthopedic support compressed therein permitting return of said orthopedic support substantially to its original full unrestrained profile and configuration when needed for use by an orthopedic patient.
providing an orthopedic support constructed essentially of resilient synthetic open cell foam material with air entrained therein having a substantial and irregular height profile and a highly bulky configuration;
(claim 9 cont'd) providing a thermoplastic bag constructed of heat sealable thermoplastic multi-layered film having a sufficient shelf life to prevent leaking and seeping of air affording storage of said package in a healthcare facility for extended periods of time, said bag having presealed edges but providing an open edge portion thereof for insertion of said orthopedic support therethrough;
placing said orthopedic support within said bag;
differentially compressing said orthopedic support within said bag to such an extent as to reduce said substantial profile and bulk configuration of a major amount to a generally uniform flat configuration of irregular outline with evacuation of a corresponding amount of air from said bag by urging a platen of a press into compressing relation with a bed of the press by a predetermined amount;
placing a heat seal along said open edge portion after said compression and evacuation but while maintaining said platen in said compressing relation;
forming an evacuated marginal portion of said bag extending outwardly entirely about said orthopedic support by an amount corresponding to the reduction in height of said orthopedic support by partial expansion of the foam material caused by releasing the compressing action of said press after heat sealing said edge portion forming a package;
whereby said package may be stored by a healthcare facility in said compressed generally uniform flat configuration until such time as utilized by an orthopedic patient at said facility; and whereby said product may be dispensed at said (claim 9 cont'd) time of utilization by releasing compression in said bag and said orthopedic support compressed therein permitting return of said orthopedic support substantially to its original full unrestrained profile and configuration when needed for use by an orthopedic patient.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE0/211100A BE897186A (en) | 1983-06-30 | 1983-06-30 | PACKAGE FOR ORTHOPEDIC SUPPORT AND METHOD FOR PACKAGING SUCH SUPPORT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1209546A true CA1209546A (en) | 1986-08-12 |
Family
ID=3843660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000429723A Expired CA1209546A (en) | 1983-06-30 | 1983-06-06 | Orthopedic support package and method |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE897186A (en) |
| CA (1) | CA1209546A (en) |
| DE (1) | DE3323061A1 (en) |
| FR (1) | FR2548146A1 (en) |
| GB (1) | GB2142303B (en) |
| NL (1) | NL8302336A (en) |
| SE (1) | SE449692B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0354172A1 (en) * | 1988-07-26 | 1990-02-07 | Demetrio Leone | Packaging of absorbent objects, in particular of napkins |
| GB2245242A (en) * | 1990-01-02 | 1992-01-02 | Highion Dev Limited | A method of packaging a sponge |
| FR2689858A1 (en) * | 1992-04-14 | 1993-10-15 | Cellulaires Tech Sa | Cushion, e.g. for padding article packed inside rigid or semi-rigid container - is made from air-permeable envelope filled with layer of compressed elastic foam which expands when envelope is pierced |
| DE102005017945A1 (en) * | 2005-04-18 | 2006-10-19 | Paul Hartmann Ag | First aid kit to be stored in vehicle, comprising plastic cover with vacuum created inside for size reduction |
| CN104083044A (en) * | 2014-07-17 | 2014-10-08 | 南京科技广场科技发展有限公司 | Cervical vertebra health care product, health care medicine pillow of cervical vertebra health care product and health care collar of cervical vertebra health care product |
| CN108177809A (en) * | 2017-12-29 | 2018-06-19 | 山东鲁阳节能材料股份有限公司 | A kind of ceramic fiber cotton sizing packaging facilities |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7024284U (en) * | 1971-01-07 | Sauermilch H | Packaging for elastic goods | |
| DE1873555U (en) * | 1963-03-18 | 1963-06-06 | Hans Loenne Automaten Geraeteb | BAG SEALING PRESS FOR PACKING VARIOUS GOODS IN BAGS. |
| GB1064422A (en) * | 1964-03-06 | 1967-04-05 | William Rhodes Ltd | Improvements in packing of mattresses |
| US3516217A (en) * | 1968-03-07 | 1970-06-23 | Bemis Co Inc | Compression packaging |
| US3977155A (en) * | 1975-11-12 | 1976-08-31 | Certain-Teed Corporation | Batt stacker/loader |
| CH636312A5 (en) * | 1979-09-21 | 1983-05-31 | Fiorella Cavicchia | Method for producing minimum-bulk pillows or mattresses packaged under vacuum |
-
1983
- 1983-06-06 CA CA000429723A patent/CA1209546A/en not_active Expired
- 1983-06-21 SE SE8303561A patent/SE449692B/en not_active IP Right Cessation
- 1983-06-27 DE DE3323061A patent/DE3323061A1/en not_active Ceased
- 1983-06-30 BE BE0/211100A patent/BE897186A/en not_active IP Right Cessation
- 1983-06-30 GB GB08317849A patent/GB2142303B/en not_active Expired
- 1983-06-30 NL NL8302336A patent/NL8302336A/en not_active Application Discontinuation
- 1983-06-30 FR FR8310925A patent/FR2548146A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| SE8303561D0 (en) | 1983-06-21 |
| SE449692B (en) | 1987-05-18 |
| FR2548146A1 (en) | 1985-01-04 |
| DE3323061A1 (en) | 1985-01-10 |
| GB8317849D0 (en) | 1983-08-03 |
| NL8302336A (en) | 1985-01-16 |
| SE8303561L (en) | 1985-01-23 |
| BE897186A (en) | 1983-10-17 |
| GB2142303A (en) | 1985-01-16 |
| GB2142303B (en) | 1986-10-01 |
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