US5088994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drip-feed bag and method for manufacturing same
Assignee: Individual
•
Filing: 1989-11-15
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Granted: 1992-02-18
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Expires: 2009-11-15
Abstract
Abstract A medical drip-feed bag for dispensing fluids made of polyolefin polymer having flexible walls defining therein a collapsible space for storing said fluids, said bag comprising a sealable inlet for introducing fluids into the bag and an outlet for dispensing said fluid, said outlet comprising hermetically sealed connector means sandwiched between said walls, the connector means comprising a substantially lenticularly shaped body with integral nipple, said connector means further comprising a bore going through the body and nipple and forming a channel for fluid to flow out of the bag.
Inventors
- 👤 Michael Porat
- 👤 Amir Porat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:43
CPC Classifications
A; A61; A61J; A61J1/00; A61J1/05; A61J1/10; B; B29; B29C; B29C65/00; B29C65/02; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/133; B29C66/20; B29C66/24; B29C66/242; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/5326; B29C66/53261; B29C66/53262; B29C66/53263; B29C66/70; B29C66/71; B29C65/04; B29C65/48; B29C65/4895; B29C65/52; B29C65/523; B29C66/72; B29C66/723; B29C66/7234; B29L; B29L2031/00; B29L2031/712; B29L2031/7148
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
113 words
A medical drip-feed bag for dispensing fluids made of polyolefin polymer having flexible walls defining therein a collapsible space for storing said fluids, said bag comprising a sealable inlet for introducing fluids into the bag and an outlet for dispensing said fluids, said outlet comprising hermetically sealed connector means sandwiched between said walls, said connector means comprising a substantially lenticularly shaped body with integral nipple, said connector means further comprising a bore going through the body and nipple and forming a channel for fluid to flow out of the bag, said connector means consisting essentially of a polyolefin polymer and being heat sealed directly to said walls without an intermediate adhesive layer therebetween.
Claim 2
Dependent Claim
113 words
A medical drip-feed bag for dispensing fluids made of polyolefin polymer having flexible walls defining therein a collapsible space for storing said fluids, said bag comprising a sealable inlet for introducing fluids into the bag and an outlet for dispensing said fluids, said outlet comprising hermetically sealed connector means sandwiched between said walls, said connector means comprising a substantially lenticularly shaped body with integral nipple, said connector means further comprising a bore going through the body and nipple and forming a channel for fluid to flow out of the bag, said connector means consisting essentially of a polyolefin polymer and being heat sealed directly to said walls without an intermediate adhesive layer therebetween.
Claim 3
Dependent Claim
16 words
A medical drip-feed bag as in claim 1 wherein the nipple has a serrated outer surface.
Claim 4
Dependent Claim
20 words
A medical drip-feed bag as in claim 1 further comprising PVC tubing permanently attached to the outlet of the bag.
Claim 5
Dependent Claim
15 words
A medical drip-feed bag as in claim 1 made from polyethylene, polypropylene or copolymers thereof.
Claim 6
Dependent Claim
18 words
A medical drip-feed bag as in claim 1 made from a laminate of a polyolefin and another polymer.
Claim 7
Dependent Claim
18 words
A medical drip-feed bag as in claim 5 wherein the other polymer is selected from nylon and polyester.
Claim 8
Dependent Claim
18 words
A medical drip-feed bag as in claim 1 wherein the substantially lenticularly shaped body defines a smooth curve.
Claim 9
Dependent Claim
18 words
A medical drip-feed bag as in claim 1 wherein the substantially lenticularly shaped body defines a prismatic cross-section.
Claim 10
Dependent Claim
32 words
A medical drip-feed bag as in claim 1 wherein said inlet comprises hermetically sealed closure means sandwiched between said walls, said closure means comprising a substantially lenticularly shaped neck and a cover.
Claim 11
Dependent Claim
18 words
A medical drip-feed bag as in claim 9 wherein the substantially lenticularly shaped body defines a smooth curve.
Claim 12
Dependent Claim
18 words
A medical drip-feed bag as in claim 9 wherein the substantially lenticularly shaped body defines a prismatic cross-section.
Claim 13
Dependent Claim
36 words
A medical drip-feed bag as in claim 3 wherein said PVC tubing is attached to said outlet by said adhesive means comprising a solvent for PVC which softens the tubing but does not affect the outlet.
Claim 14
Independent Claim
85 words
A method for manufacturing drip-feed bags from polyolefin comprising the steps of: preparing a bag from polyolefin polymer, said bag having an inlet and an outlet for fluids; and directly heat sealing a connector means consisting essentially of polyolefin having a substantially lenticularly shaped body with integral nipple and a central throughgoing bore through the body and nipple in said outlet, while the connector means is sandwiched in between the walls of the bag, without an intermediate adhesive layer between the walls and the connector.
Claim 15
Independent Claim
85 words
A method for manufacturing drip-feed bags from polyolefin comprising the steps of: preparing a bag from polyolefin polymer, said bag having an inlet and an outlet for fluids; and directly heat sealing a connector means consisting essentially of polyolefin having a substantially lenticularly shaped body with integral nipple and a central throughgoing bore through the body and nipple in said outlet, while the connector means is sandwiched in between the walls of the bag, without an intermediate adhesive layer between the walls and the connector.
Claim 16
Dependent Claim
48 words
A method for manufacturing drip-feed bags according to claim 13 and further comprising the steps of: heat sealing a closure means having a substantially lenticularly shaped body with a central throughgoing bore in said inlet, while the closure means is sandwiched in between the walls of the bag.
Claim 17
Dependent Claim
29 words
A method as in claim 13 wherein said nipple is formed with a serrated outer surface and further comprising permanently affixing a length of PVC tubing to said nipple.
Claim 18
Dependent Claim
49 words
A method according to claim 15 and wherein said step of permanently affixing comprises dipping the nipple into a PVC solvent, then forcing the PVC tubing onto the nipple and allowing the solvent to dry, thereby conforming the inner surface of the tubing to the shape of the nipple.
Claim 19
Dependent Claim
30 words
A method in accordance with claim 15 wherein said step of permanently affixing comprises forcing a length of PVC tubing onto the nipple and retaining it thereon by pressure rings.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |