Enema bag

• US 4,636,412 A
• Filed: 12/12/1984
• Issued: 01/13/1987
• Est. Priority Date: 04/13/1983
• Status: Expired due to Term

• Current Assignee: Field Group Chemicals Pty Limited
• Original Assignee: Field Group Research Pty Limited
• Inventors: Field, Peter W.
• Primary Examiner(s): Kittle, John E.
• Assistant Examiner(s): Seidleck, James J.
• Application Number:
  US06/680,808
• Time in Patent Office: 762 Days
• Field of Search: 604/262, 383/9, 383/109, 383/113, 383/119, 222/570, 428/35, 428/475.8, 428/476.1, 428/516, 428/518
• US Class Current: 604/408
• CPC Class Codes: A61J 1/10 Bag-type containers
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2307/54 Yield strength; Tensile strength
• CPC Class Codes: B32B 2307/558 Impact strength, toughness
• CPC Class Codes: B32B 2307/7242 Non-permeable
• CPC Class Codes: B32B 2323/046 LDPE, i.e. low density polyethylene
• CPC Class Codes: B32B 2377/00 Polyamides
• CPC Class Codes: B32B 2439/80 Medical packaging
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/34 comprising polyamides
• CPC Class Codes: Y10S 383/906 Dispensing feature
• CPC Class Codes: Y10S 383/908 Material having specified grain direction or molecular orientation
• CPC Class Codes: Y10T 428/1334 Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
• CPC Class Codes: Y10T 428/1341 Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
• CPC Class Codes: Y10T 428/31746 Polymer of monoethylenically unsaturated hydrocarbon
• CPC Class Codes: Y10T 428/31913 Monoolefin polymer
• CPC Class Codes: Y10T 428/3192 Next to vinyl or vinylidene chloride polymer

Abstract

There is provided a container useful for both storage and administration of a liquid medical composition for example as a barium enema the container comprising a flexible wall (1) and having a port (10) adapted for connection to a tube and having a composite wall including an innermost layer (11) which is inert to the content and is heat sealed with the port and a non innermost layer (12) which is resistant to water vapor transmission, the composite having a resistance to tear propogation in excess of 50 g/mil.

Claims

1. A container suitable for handling and storage of a liquid and adapted to facilitate transfer to or from a patient of the liquid during a medical procedure said container comprising:

a transparent or translucent composite flexible wall or walls;

port means for communication with the interior of the container;

the composite wall including an innermost layer which is substantially inert towards the liquid and which is heat sealed with the port means;

a first non-innermost layer selected from the group consisting of polyvinylidene chloride, high density polyethylene, polyvinyl chloride and polypropylene;

and a second non-innermost layer differing from the first, and selected from the group consisting of nylon, high density polyethylene, and polypropylene, said layers being selected so that the composite has an impact resistance (as measured by ASTM D 1909-75 method A) in excess of 1.2 kg. and has a moisture transpiration rate of less than 7.7 g./m² /24 hours when measured at 37.8°

C. and 90% RH.

2. A container according to claim 1 wherein the second non-innermost layer is biaxially oriented.

3. A container according to claim 1 in the form of a transparent hollow flat pouch.

4. A container according to claim 3 wherein the moisture loss through the wall is less than 1.4 g./sq. M/24 hours when measured at 25°

C. and 90% RH.

5. A container according to claim 4 wherein the tensile strength of the wall is greater than 7000 psi when measured by ASTM D-882.

6. A container according to claim 5 wherein the tear strength of the wall is greater than 100 g./mil when measured according to ASTM 1922.

7. A container according to claim 1 wherein the inner layer is a polyolefin selected from the group consisting of low density polyethylene, linear low density polyethylene, modified polyethylene, ethylene vinyl acetate and copolymers thereof, and the second non-innermost layer is selected from the group consisting of nylon, high density polyethylene and polypropylene.

8. A container according to claim 1 having a first non-innermost layer of high density polyethylene and a second non-innermost layer of nylon.

9. A container according to claim 1 when adapted for use as an enema bag.

10. A container according to claim 9 containing a radiopaque medium and having a tamperproof closure.