US3229813A - Sterile package - Google Patents

Sterile package Download PDF

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US3229813A
US3229813A US81194759A US3229813A US 3229813 A US3229813 A US 3229813A US 81194759 A US81194759 A US 81194759A US 3229813 A US3229813 A US 3229813A
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paper
package
sheet
container
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Jr George A Crowe
Jr Lawrence Jerzewski
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Johnson and Johnson
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Johnson and Johnson
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L2/00Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26Accessories or devices or components used for biocidal treatment

Description

18, 1966 G. A. CROWE, JR., ETAL 3,229,313-

STERILE PACKAGE Filed May 8, 1959 kl/ xw.

( JNVENT 94 41-114 ,a

ATTORNEY United States Patent Ofiice 3,229,813 Patented Jan. 18, 1966 3,229,813 STERILE PACKAGE George A. Crowe, .3 12, Plainfield, and Lawrence Jerzewski,

In, East Millstone, N .J., assignors to Johnson & Johnson, a corporation of New Jersey Filed May 8, 1959, Ser. No. 811,947 3 Claims. (Cl. 206-531) The present invention is drawn to bags and similar packages formed of plastic sheet material and more particularly to sealed plastic packages the contents of which have been sterilized after being packaged.

Because of the advantages in merchandising derived from displaying the contents of a package, it has become common practice to place many articles in transparent plastic bags or containers. Besides readily displaying the merchandise, the transparent plastic bag or other container has the further advantage that the plastic sheet material from which the container is made is relatively inexpensive, is tough, giving a strong flexible package, and is readily sealed, particularly where formed of a thermoplastic sheet material. Plastic bags formed of thermoplastic films or sheets are easily prepared and. articles packaged and sealed therein since thermoplastic sheet material can be purchased in the form of tubes, which may then be cut into the desired length, heat sealed at one end to form a bag, filled with the article to be packaged and the remaining open end then heat sealed to complete the sealed package. Such a package would seem to be ideally suited for the sterile packaging of surgical sponges, cotton balls, bandages and similar items which must be maintained in a sterile condition up to the time of their removal from the package and use. However, despite the many advantages offered by the use of thermoplastic and other resin sheets or films for packaging, considerable difficulty is encountered, because of the relatively impermeable nature of such materials, when attempts are made to sterilize bags and similar packages made therefrom after the contents have been scaled therein.

When sterilizing a packaged item, it is customary to first draw a vacuum on the package to an absolute pressure of between about and ,4 of an atmosphere. The package is then subjected to steam, if steam sterilization is being employed, at a pressure of about 2 atmospheres and a temperature of about 240 F. to 250 F. After being subjected to the steam for about to minutes, the package is brought back to atmospheric pressure. Where chemical sterilization is employed, after the initial evacuation, the package is subjected to steam at about 160 F. at a pressure of about /3 atmosphere, after which a sterilizing gas is added and the pressure increased to about 2 atmospheres. The pressure on the package is then reduced to somewhat less than atmospheric pressure to draw off the sterilizing gas and the package then permitted to come to atmospheric pressure. Since thermoplastic and other resin films or sheets offer substantial resistance to the passage of air, when bags are made of these materials not only does the sterilizing steam or sterilizing gas not adequately penetrate the package to sterilize its contents, but the radical change in pressure, particularly at elevated temperatures, make it extremely diflicult to keep the package from rupturing at some point. This exposes the contents to contamination after the sterilizing cycle is completed.

It is an object of the present invention to make plastic bags and similar packages the sealed contents of which are readily sterilized by conventional sterilizing processes without exerting undue strain on the package. Other objects and advantages of this invention will become apparent from the following description taken in connection with the accompanying drawings, wherein are set forth by way of illustration and example certain embodiments of this invention.

It has now been discovered that bags and similar packages made from thermoplastic and other resin sheet or film materials can be readily sterilized and the contents thereof maintained sterile if openings are formed in the side of the bag and these openings sealed with a sheet of porous paper in the manner hereinafter described. The openings may be either in the form of a single window, which is covered by the porous paper, or may be in the form of a plurality of relatively small openings covered by the paper sheet.

The practice of the present invention is further described by reference to the drawings, in which:

FIG. 1 illustrates one modification of the invention in which a single window is used; and

FIG. 2 illustrates the preferred form of the invention in which a plurality of openings are provided backed by a sheet of porous paper.

Referring to the drawings, FIG. 1 illustrates a transparent bag 10 formed of polyethylene or other suitable transparent thremoplastic sheet material. The bag may be formed from a tube of polyethylene, a portion of which has been removed to form a window 11 which is covered by a sheet of paper 12 sufficiently wide that its marginal edges 13 extend over the edge of the polyethylene sheet surrounding the window 11. The paper cover is bonded to the polyethylene sheet along this marginal edge 13 by the application of heat and pressure. The polyethylene tube is formed into bag 10 by bringing its bottom edges together and heat sealing as at 14. The tag so formed is filled with cotton balls 15 or other article to be packaged and sealed closed by clamping the top edge 16 together at a sutficiently high temperature to obtain a good heat seal.

The window 11 may vary in size, although it is generally undesirable to make the window too large since this has a tendency to weaken the package, the paper of the window generally being more readily torn than the polyethylene or other thermoplastic sheet material from which the bag is formed. The window should be large enough, however, to permit suflicient breathing to prevent rupture of the package during the sterilization cycle and allow the entry of sterilizing gases where chemical sterilization is employed. It has been found that the paper, covering the open area provided in the bag, should not be substantially less than about 6 square inches for each 1 /2 liter of cubic contents of the package.

In order to prevent the possible tearing of the paper window, it may be desirable to use the modification illustrated in FIG. 2, in which a substantially stronger package is illustrated. In the package of FIG. 2, the openings 17 in the thermoplastic sheet material are made in the form of a plurality of small holes grouped together and then covered with a sheet of paper 18. By this structure, the thermoplastic sheet material 19 between the openings 17 protects the paper 18, giving a stronger package. Where small openings are used in this manner rather than a single large opening, as illustrated in FIG. 1, the unsealed paper area should not be substantially less than about 6 square inches for every 1 /2 liters of volume inside the bag. The open area in the film, however, can be substantially smaller, satisfactory results being obtained with a single /s-inch diameter hole in the film over the paper with a package volume of about 1200 cc.

The porous paper used should be sufficiently strong to resist tearing both during sterilization and during shipping and handling. Otherwise, the same may be torn with the result that the contents of the package will become contaminated. Papers having a wet strength of not appreciably less than about 1.4 lbs. per inch width and a dry strength of not less than about 8.5 lbs. per inch are found to be sufficiently strong for use in the present invention.

The paper used should be impervious to airborne bacteria, and for this reason papers more porous than those having a porosity rating of 45 seconds are generally unsatisfactory. The preferred papers preferably have a porosity, as shown by the Gurley-Hill S-P-S Tester, of about 65 seconds to 180 seconds. This method of porosity testing is the T.A.P.P.I. standard T. 460-m49 and is the time for passage of 100 ml. of air through 1 square inch of paper. The porosity rating of any paper in the above units can be obtained from most paper manufacturers for the papers they sell.

With appreciably lower porosities, i.e., with time factors greater than 180 seconds, it is found difficult to completely sterilize the package contents with conventional steam or chemical sterilization methods, the paper offering too much resistance to flow of the sterilizing gas. Also, there is some tendency for the package to rupture during the sterilizing cycle. Where the paper has an appreciably greater porosity, as shown by a test time reading of appreciably less than 45 seconds, there is too much danger of air-borne bacteria passing through the paper window and contaminating the contents of the package.

Although papers having a pore size suffiicently large to give a reading of 45 seconds have been found to satisfactorily filter out air-borne bacteria, there is always the possibility that the paper is not of good stock and uniform quality. Accordingly, it is the safest practice to check any new stock. Also, papers used should beof a high grade and uniform quality so as to avoid the possible inclusion of inferior sheets of unsatisfactory pore size. The ability of a paper to act as a bacterial filter is tested in the following manner. The sample paper is fabricated into rectangular envelopes, and a gauze pad is placed into each envelope. The edges of each envelope are securely sealed with adhesive or cellophane tape and the packages are then steam sterilized according to U.S.P. procedures, Sterilization Process C. Upon removal, the packages are exposed to air-borne bacterial penetration normally encountered in various storage conditions. After exposure for several weeks, the contents of each envelope are tested for sterility as outlined in U.S.P., Sterility Tests for Liquids and Solids, Sterility Test for Purified Cotton, Gauze, and Surgical Dressings. Papers allowing no contamination are acceptable bacterial filters.

Where the plastic sheet material used in preparing packages of the present invention is thermoplastic, it should have a softening temperature in excess of 80 C. The preferred materials are both transparent and thermoplastic. Polyethylene films have been found to be highly suitable where the polyethylene has a softening temperature in excess of 80 C. Among other suitable film or sheet materials are films or thin sheets of polyethylene terephthalate, cellulose, cellulose acetate, polystyrene, polyvinyl chloride and polyvinylidene chloride.

The invention has been illustrated in connection with one embodiment thereof, although many modifications are within its spirit. It is to be limited, therefore, only by the scope of the appended claims.

Having thus described our invention, we claim:

1. A bacteria impervious air permeable sealed package comprising a flexible container formed of a substantially air impervious material, a sterile article in said container,

a plurality of small holes through said impervious material in the side of said container, a paper sheet on the inside of said container over said holes having an area substantially greater than said holes, said paper sheet being sealed to said impervious material by a seal extending around said holes and around an unsealed area of said paper sheet of not less than about 6 square inches for each 1 /2 liters of maximum volume of said container, said paper cover having a porosity of 45 seconds to 180 seconds, a wet strength of not less than about 1.4 lbs. per inch width and a dry strength of not less than about 8.5 lbs. per inch Width.

2. A bacteria impervious air permeable sterile package comprising a container formed of flexible, transparent, thermoplastic sheet material, a sterile article in said container, an open area in the side of said container through said thermoplastic sheet material of not less than that of a circular opening of about /s-inch diameter, said open area being made up of a plurality of small openings, a paper cover inside said container over said open area and of a size substantially larger than said open area so as to extend beyond the edges thereof, said paper cover being sealed to said thermoplastic sheet around said open area, the seal extending around an area of paper not less than 6 square inches for each 1 /2 liters maximum volume of said container, said paper cover having a porosity of 45 seconds to 180 seconds, a wet strength of not less than about 1.4 lbs. per inch width and a dry strength of not less than about 8.5 lbs. per inch width.

3. A bacteria impervious air permeable sterile package comprising a flexible container formed of a tube of flexible, transparent, thermoplastic sheet material, said tube being sealed shut at both ends, a sterile article in said container, an open area through said thermoplastic sheet material in the side of said container of not less than that of a circle having a diameter of about M a-inch, said open area being made up of a plurality of small openings, a paper cover inside said container over said open area and of a size substantially larger than said open area so as to extend beyond the edges thereof, said paper cover being sealed to said thermoplastic sheet material around said open area, the seal extending around an area of paper not less than 6 square inches for each 1% liters maximum volume of said container, said paper cover having a porosity of 45 seconds to 180 seconds, a Wet strength of not less than about 1.4 lbs. per inch Width and a dry strength of not less than about 8.5 lbs. per inch Width.

References Cited by the Examiner UNITED STATES PATENTS 829,923 8/1906 Lee 206-63.2 2,433,056 12/1947 Masci 206-632 2,835,377 5/1958 May et al 206- 2,997,224 8/1961 Stannard 2293.1

FOREIGN PATENTS 580,196 8/1946 Great Britain.

THERON E. CONDON, Primary Examiner.

FRANKLIN T. GARRETT, EARLE J. DRUMMOND,

Examiners,

Claims (1)

1. A BACTERIA IMPERVIOUS AIR PERMEABLE SEALED PACKAGE COMPRISING A FLEXIBLE CONTAINER FORMED OF A SUBSTANTIALLY AIR IMPERVIOUS MATERIAL, A STERILE ARTICLE IN SAID CONTAINER, A PLURALITY OF SMALL HOLES THROUGH SIAD IMPERVIOUS MATERIAL IN THE SIDE OF SAID CONTAINER, A PAPER SHEET ON THE INSIDE OF SAID CONTAINER OVER SAID HOLES HAVING AN AREA SUBSTANTIALLY GREATER THEN SAID HOLES, SAID PAPER SHEET BEING SEALED TO SAID IMPERVIOUS MATERIAL BY A SEAL EXTENDING AROUND SAID HOLES AND AROUND AN UNSEALED AREA OF SAID PAPER SHEET OF NOT LESS THAN ABOUT 6 SQUARE INCHES FOR EACH 1 1/2 LITERS OF MAXIMUM VOLUME OF SAID CONTAINER, SAID PAPER COVER HAVING A POROSITY OF 45 SECONDS TO 180 SECONDS, A WET STRENGTH OF NOT LESS THAN ABOUT 1.4 LBS. PER INCH WIDTH AND A DRY STRENGTH OF NOT LESS THAN ABOUT 8.5 LBS. PER INCH WIDTH.
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Cited By (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247957A (en) * 1964-08-17 1966-04-26 Hospital Supply And Dev Compan Sterile packaging and the like
US3323640A (en) * 1966-06-14 1967-06-06 Kugler Emanuel Flexible package with interconnected compartments
US3384083A (en) * 1966-02-15 1968-05-21 Cellu Craft Inc Treatment device
US3422985A (en) * 1965-04-13 1969-01-21 North American Rockwell Waste collection assembly
US3435948A (en) * 1966-08-08 1969-04-01 Ethicon Inc Gas sterilizable package
US3468471A (en) * 1965-06-24 1969-09-23 Fritz Linder Bacteriaproof plastic bag for articles to be sterilized
US3490580A (en) * 1968-07-29 1970-01-20 Robert C Brumfield Containers and process for asepsis
US3503497A (en) * 1968-07-25 1970-03-31 Pall Corp Breather container
US3507386A (en) * 1968-09-10 1970-04-21 Jintan Terumo Co Package for sterilized articles
US3507667A (en) * 1967-12-29 1970-04-21 Rhone Poulenc Sa Container for the preservation of fruit and vegetables
US3520401A (en) * 1968-08-05 1970-07-14 American Cyanamid Co Disposable surgical scrub sponge dispenser
US3625353A (en) * 1969-02-19 1971-12-07 Jintan Terumo Co Package for sterilized articles
JPS5020964Y1 (en) * 1970-05-25 1975-06-25
US3923154A (en) * 1973-04-05 1975-12-02 Litton Business Systems Inc Sterilant package
JPS515580U (en) * 1974-06-27 1976-01-16
US4042170A (en) * 1975-05-06 1977-08-16 Ab Svenska Dental Instrument Sterile package
US4101031A (en) * 1975-10-06 1978-07-18 Medical Engineering Corp. Package for prosthetic heart valve or the like
US4154342A (en) * 1976-07-30 1979-05-15 Boehringer Ingelheim Gmbh Sterilizable package
US4270658A (en) * 1978-10-27 1981-06-02 Schuster Samuel J Breathable, sterilizable receptacles for storing articles in sterile condition
US4311477A (en) * 1979-12-26 1982-01-19 Polyplastics Company, Ltd. Bag for cultivating mushrooms
US4482053A (en) * 1983-11-16 1984-11-13 Ethicon, Inc. Sealable container for packaging medical articles in sterile condition
US4553669A (en) * 1983-09-15 1985-11-19 American Hospital Supply Corporation Sterilization container formed of nonwoven material
US4583643A (en) * 1983-04-08 1986-04-22 Sanderson Roger S Sterile bag
US4624366A (en) * 1979-11-14 1986-11-25 Church & Dwight Co., Inc. Container
EP0266688A2 (en) * 1986-11-05 1988-05-11 BASF Aktiengesellschaft Container for medical matter
US4754595A (en) * 1983-04-08 1988-07-05 Sanderson Roger S Method of sterilizing and storing articles
US4779736A (en) * 1985-09-27 1988-10-25 Gordon Geasland Tubular plastic shipping, storage and dispensing container
EP0307173A1 (en) * 1987-09-11 1989-03-15 A. Ahlstrom Corporation Disposable sterilization package
WO1989007555A1 (en) * 1988-02-16 1989-08-24 Gordon Geasland Tubular plastic shipping, storage and dispensing container and parts usable therewith
US5059036A (en) * 1990-04-27 1991-10-22 Kapak Corporation Vented pouch arrangement and method
US5066597A (en) * 1989-04-10 1991-11-19 Massachusetts Institute Of Technology Apparatus for infectious radioactive waste
US5226735A (en) * 1991-08-28 1993-07-13 Daniel Beliveau Perforated plastic bag for packaging fruits or vegetables
US5254073A (en) * 1990-04-27 1993-10-19 Kapak Corporation Method of making a vented pouch
US5459978A (en) * 1993-03-01 1995-10-24 Ongard Systems Inc Sterilizable flexible peel-seal pouch package
FR2729932A1 (en) * 1995-01-30 1996-08-02 Steril Packing System Lab Sachet for packaging or sterilising products
WO1996029264A1 (en) * 1995-03-23 1996-09-26 The Procter & Gamble Company Draining means for venting systems
US5590777A (en) * 1993-03-01 1997-01-07 Ongard Systems, Inc. Sterilizable flexible pouch package
US5590778A (en) * 1995-06-06 1997-01-07 Baxter International Inc. Double-sterile package for medical apparatus and method of making
US5653090A (en) * 1993-03-01 1997-08-05 Ongard Systems, Inc. Sterilizable flexible pouch package
US5662576A (en) * 1993-09-29 1997-09-02 Compac International, Inc. Method of manufacturing an improved bag for the cultivation of mushroom spawn and apparatus therefor
US5709479A (en) * 1996-09-06 1998-01-20 Kapak Corp. Bag construction for distributing material
US5785428A (en) * 1996-12-13 1998-07-28 Reynolds Consumer Products, Inc. Bag for storing and washing produce
US5928516A (en) * 1995-01-20 1999-07-27 Pall Corporation Filter package
US5947287A (en) * 1994-12-21 1999-09-07 Whitesell Of North Carolina, Inc. Sterilizable flexible pouch package
US5971613A (en) * 1997-04-11 1999-10-26 Kapak Corp. Bag constructions having inwardly directed side seal portions
US5976299A (en) * 1997-06-30 1999-11-02 Fisher Container Corporation Method for making a non-peelable, sterilizable bag
US6251489B1 (en) * 1994-12-21 2001-06-26 Mark E. Weiss Sterilizable flexible pouch package
US6375037B1 (en) 2000-10-10 2002-04-23 Kapak Corporation Bag construction for distributing material
US20020094942A1 (en) * 2000-09-06 2002-07-18 The Procter & Gamble Company Fabric additive articles and package therefor
US20060030472A1 (en) * 2003-05-30 2006-02-09 Hartman William G Food bag release valve
US20060037884A1 (en) * 2004-08-23 2006-02-23 United States Gypsum Company Plastic bag for fine powders
US20060056744A1 (en) * 2004-09-10 2006-03-16 Berman Ronald H Sealed beverage container
FR2875795A1 (en) * 2004-09-30 2006-03-31 Vygon Sa Sterilized medical product e.g. care drape, package for hospital, has sheet presenting rectangular sector that includes upper horizontal side which constitutes hinge to fold sector as flap on top of package for removing sachet
US20070054076A1 (en) * 2003-09-09 2007-03-08 Advanced Technology Materials, Inc. Sterile, pyrogen-free, polymeric film-based heating bag
US20070107381A1 (en) * 2003-08-18 2007-05-17 Steven Vanhamel Packaging article comprising porous material, and method of integrity testing of same
US20080240623A1 (en) * 2007-03-30 2008-10-02 Kapak Corporation Bag construction with side gussets
US20080240622A1 (en) * 2007-03-30 2008-10-02 Gary Michael Bell Bag construction with flat bottom having removable layer
US20080240626A1 (en) * 2007-03-30 2008-10-02 Gary Michael Bell Bag construction with side gussets
US20080253696A1 (en) * 2007-04-10 2008-10-16 Haas Tobin J Pouch arrangement for distributing material and methods
US20090266720A1 (en) * 2008-04-23 2009-10-29 Richards Mark L System for Protecting Objects from Reactive Atmospheric Gases
US20100051495A1 (en) * 2008-02-07 2010-03-04 Amcor Flexibles, Inc. Dual Compartment Pouch
US20100084425A1 (en) * 2007-03-30 2010-04-08 Gary Michael Bell Bag construction with flat bottom having removable layer
US20110139650A1 (en) * 2009-12-15 2011-06-16 Amcor Flexibles, Inc. Sterilizable Package Having Breathable Membrane for the Packaging of Medical Devices
EP2450076A1 (en) * 2010-11-04 2012-05-09 Curan B.V. Package with catheter
WO2012060699A1 (en) * 2010-11-04 2012-05-10 Curan B.V. Package with catheter
US20130299380A1 (en) * 2010-07-30 2013-11-14 Atmi Bvba Disposable packaging item
US20140231283A1 (en) * 2011-07-18 2014-08-21 Board Of Trustees Of Michigan State University Product packaging system with antimicrobial agent
US20150122841A1 (en) * 2013-11-06 2015-05-07 The Procter & Gamble Company Easy to empty flexible containers
US20150122846A1 (en) * 2013-11-06 2015-05-07 The Procter & Gamble Company Flexible containers with vent systems
US9221584B2 (en) * 2014-06-02 2015-12-29 Smartland Cereal bag with crumb collector
US9694965B2 (en) 2013-11-06 2017-07-04 The Procter & Gamble Company Flexible containers having flexible valves
US9988190B2 (en) 2015-04-10 2018-06-05 The Procter & Gamble Company Flexible containers with biased dispensing

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Cited By (98)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247957A (en) * 1964-08-17 1966-04-26 Hospital Supply And Dev Compan Sterile packaging and the like
US3422985A (en) * 1965-04-13 1969-01-21 North American Rockwell Waste collection assembly
US3468471A (en) * 1965-06-24 1969-09-23 Fritz Linder Bacteriaproof plastic bag for articles to be sterilized
US3384083A (en) * 1966-02-15 1968-05-21 Cellu Craft Inc Treatment device
US3323640A (en) * 1966-06-14 1967-06-06 Kugler Emanuel Flexible package with interconnected compartments
US3435948A (en) * 1966-08-08 1969-04-01 Ethicon Inc Gas sterilizable package
US3507667A (en) * 1967-12-29 1970-04-21 Rhone Poulenc Sa Container for the preservation of fruit and vegetables
US3503497A (en) * 1968-07-25 1970-03-31 Pall Corp Breather container
US3490580A (en) * 1968-07-29 1970-01-20 Robert C Brumfield Containers and process for asepsis
US3520401A (en) * 1968-08-05 1970-07-14 American Cyanamid Co Disposable surgical scrub sponge dispenser
US3507386A (en) * 1968-09-10 1970-04-21 Jintan Terumo Co Package for sterilized articles
US3625353A (en) * 1969-02-19 1971-12-07 Jintan Terumo Co Package for sterilized articles
JPS5020964Y1 (en) * 1970-05-25 1975-06-25
US3923154A (en) * 1973-04-05 1975-12-02 Litton Business Systems Inc Sterilant package
JPS515580U (en) * 1974-06-27 1976-01-16
US4042170A (en) * 1975-05-06 1977-08-16 Ab Svenska Dental Instrument Sterile package
US4101031A (en) * 1975-10-06 1978-07-18 Medical Engineering Corp. Package for prosthetic heart valve or the like
US4154342A (en) * 1976-07-30 1979-05-15 Boehringer Ingelheim Gmbh Sterilizable package
US4270658A (en) * 1978-10-27 1981-06-02 Schuster Samuel J Breathable, sterilizable receptacles for storing articles in sterile condition
US4624366A (en) * 1979-11-14 1986-11-25 Church & Dwight Co., Inc. Container
US4311477A (en) * 1979-12-26 1982-01-19 Polyplastics Company, Ltd. Bag for cultivating mushrooms
US4583643A (en) * 1983-04-08 1986-04-22 Sanderson Roger S Sterile bag
US4754595A (en) * 1983-04-08 1988-07-05 Sanderson Roger S Method of sterilizing and storing articles
US4553669A (en) * 1983-09-15 1985-11-19 American Hospital Supply Corporation Sterilization container formed of nonwoven material
US4482053A (en) * 1983-11-16 1984-11-13 Ethicon, Inc. Sealable container for packaging medical articles in sterile condition
US4779736A (en) * 1985-09-27 1988-10-25 Gordon Geasland Tubular plastic shipping, storage and dispensing container
EP0266688A2 (en) * 1986-11-05 1988-05-11 BASF Aktiengesellschaft Container for medical matter
EP0266688A3 (en) * 1986-11-05 1988-09-14 BASF Aktiengesellschaft Container for medical matter
EP0307173A1 (en) * 1987-09-11 1989-03-15 A. Ahlstrom Corporation Disposable sterilization package
WO1989007555A1 (en) * 1988-02-16 1989-08-24 Gordon Geasland Tubular plastic shipping, storage and dispensing container and parts usable therewith
US5066597A (en) * 1989-04-10 1991-11-19 Massachusetts Institute Of Technology Apparatus for infectious radioactive waste
US5059036A (en) * 1990-04-27 1991-10-22 Kapak Corporation Vented pouch arrangement and method
US6023914A (en) * 1990-04-27 2000-02-15 Kapak Corporation Vented pouch arrangement and method
US5254073A (en) * 1990-04-27 1993-10-19 Kapak Corporation Method of making a vented pouch
US6274181B1 (en) 1990-04-27 2001-08-14 Kapak Corporation Vented pouch arrangement and method
US6423356B2 (en) 1990-04-27 2002-07-23 Kapak Corporation Vented pouch arrangement and method
US5542902A (en) * 1990-04-27 1996-08-06 Kapak Corporation Vented pouch arrangement and method
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US5226735A (en) * 1991-08-28 1993-07-13 Daniel Beliveau Perforated plastic bag for packaging fruits or vegetables
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