US4551136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure infusor
Assignee: Smiths Medical ASD Inc
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Filing: 1983-04-11
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Granted: 1985-11-05
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Expires: 2003-04-11
Abstract
Abstract A pressure infusor for introduction of fluids into the human body. Two sheets of polyurethane overlie each other and are continuously sealed to form an air-inflatable bladder. A strip of polyurethane projects from one vertical margin of the bladder to wrap completely around the liquid-filled bag. A narrow elongated strap is centrally attached to one margin of the infusor and is long enough to wrap completely about the infusor with a bag enclosed. Velcro strips are secured to the strap so that it can be fastened upon itself.
Inventors
- 👤 Joseph P. Mandl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:36
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/145; A61M5/148; A61M5/1483
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
62 words
A pressure infusor comprising, a transparent polyurethane outer sheet approximately 0.035 inch thick, a transparent polyurethane inner sheet approximately 0.035 inch thick and overlying said outer sheet with approximately a 2.5 inch margin of said outer sheet projecting beyond said inner sheet at opposed edges thereof, a continuous seal around the coextensive portions of said sheets to form a closed pressure bladder,
Claim 2
Dependent Claim
62 words
A pressure infusor comprising, a transparent polyurethane outer sheet approximately 0.035 inch thick, a transparent polyurethane inner sheet approximately 0.035 inch thick and overlying said outer sheet with approximately a 2.5 inch margin of said outer sheet projecting beyond said inner sheet at opposed edges thereof, a continuous seal around the coextensive portions of said sheets to form a closed pressure bladder,
Claim 3
Dependent Claim
123 words
said 2.5 inch margins extending along said entire edges of said bladder, one of said margins at least partially overlying the other margin when said outer sheet is wrapped around a fluid-containing plastic bag, said polyurethane margins having a high coefficient of friction when in said overlying relation, thereby resisting opening said outer sheet, an elongated narrow strap projecting approximately 17 inches from one of the margins, said strap totally surrounding said pressure bladder and fluid-containing bag and overlying said margins when said outer sheet is wrapped around a plastic fluid-containing bag, said strap having cooperating Velcro fastening strips secured thereto to fasten said strap around said bag, means for applying fluid under pressure to said bladder and means for measuring said pressure.
Claim 4
Dependent Claim
123 words
said 2.5 inch margins extending along said entire edges of said bladder, one of said margins at least partially overlying the other margin when said outer sheet is wrapped around a fluid-containing plastic bag, said polyurethane margins having a high coefficient of friction when in said overlying relation, thereby resisting opening said outer sheet, an elongated narrow strap projecting approximately 17 inches from one of the margins, said strap totally surrounding said pressure bladder and fluid-containing bag and overlying said margins when said outer sheet is wrapped around a plastic fluid-containing bag, said strap having cooperating Velcro fastening strips secured thereto to fasten said strap around said bag, means for applying fluid under pressure to said bladder and means for measuring said pressure.
Claim 5
Dependent Claim
171 words
A pressure infusor comprising, a transparent polyurethane outer sheet, a transparent polyurethane inner sheet overlying said outer sheet with approximately a 2.5 inch margin of said outer sheet projecting beyond said inner sheet at opposed edges thereof, a continuous seal around the coextensive portions of said sheets to form a closed pressure bladder, said margins extending along said entire edges of said bladder, one of said margins at least partially overlying the other margin when said outer sheet is wrapped around a fluid-containing plastic bag, said polyurethane margins having a high coefficient of friction when in said overlying relation, thereby resisting opening said outer sheet, an elongated narrow strap projecting from one of the margins, said strap totally surrounding said pressure bladder and fluid-containing bag and overlying said margins when said outer sheet is wrapped around a plastic fluid-containing bag, said strap having cooperating Velcro fastening strips secured thereto to fasten said strap around said bag, means for applying fluid under pressure to said bladder and means for measuring said pressure.
Claim 6
Dependent Claim
171 words
A pressure infusor comprising, a transparent polyurethane outer sheet, a transparent polyurethane inner sheet overlying said outer sheet with approximately a 2.5 inch margin of said outer sheet projecting beyond said inner sheet at opposed edges thereof, a continuous seal around the coextensive portions of said sheets to form a closed pressure bladder, said margins extending along said entire edges of said bladder, one of said margins at least partially overlying the other margin when said outer sheet is wrapped around a fluid-containing plastic bag, said polyurethane margins having a high coefficient of friction when in said overlying relation, thereby resisting opening said outer sheet, an elongated narrow strap projecting from one of the margins, said strap totally surrounding said pressure bladder and fluid-containing bag and overlying said margins when said outer sheet is wrapped around a plastic fluid-containing bag, said strap having cooperating Velcro fastening strips secured thereto to fasten said strap around said bag, means for applying fluid under pressure to said bladder and means for measuring said pressure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |