US4336881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous acid concentrate for hemodialysis dialysate
Assignee: Diachem Inc
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Filing: 1980-03-24
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Granted: 1982-06-29
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Expires: 2000-03-24
Abstract
Abstract An aqueous acid concentrate in unit dosage form, suitable for use in compounding a hemodialysis dialysate, is disclosed. The concentrate contains water, chloride ion in a concentration of about 3.5 Molar to about 4.7 Molar, sodium ion in a concentration of about 1.9 Molar to about 2.7 Molar, and dextrose in a concentration of about 0 Molar to about 0.4 Molar. Additionally, the concentrate may contain acetate group in a concentration of up to about 0.525 Molar, calcium ion in a concentration of up to about 0.125 Molar, potassium ion in a concentration of up to about 0.14 Molar, and magnesium ion in a concentration of up to about 0.09 Molar.
Inventors
- 👤 Albert L. Babb
- 👤 Belding H. Scribner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:11
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/16; A61M1/1654
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
A sealed unit dose container containing therein an aqueous acid concentrate composition for compounding a hemodialysis dialysate which composition comprises water, dissolved solid salts and hydrochloric acid in an amount of about 93.9 milliliters/liter to about 127.7 milliliters/liter (expressed as aqueous 11.6 N HCl); the composition containing chloride ion in a concentration of about 3.5 Molar to about 4.7 Molar, sodium ion in a concentration of about 1.9 Molar to about 2.7 Molar, acetate group in a concentration of 0 Molar to about 0.525 Molar, potassium ion in a concentration of 0 Molar to about 0.14 Molar, calcium ion in a concentration of 0 Molar to about 0.125 Molar, magnesium ion in a concentration of 0 Molar to about 0.09 Molar, and dextrose in a concentration of 0 Molar to about 0.4 Molar; said composition having a pH value of about 1 to about 2.5.
Claim 2
Dependent Claim
145 words
A sealed unit dose container containing therein an aqueous acid concentrate composition for compounding a hemodialysis dialysate which composition comprises water, dissolved solid salts and hydrochloric acid in an amount of about 93.9 milliliters/liter to about 127.7 milliliters/liter (expressed as aqueous 11.6 N HCl); the composition containing chloride ion in a concentration of about 3.5 Molar to about 4.7 Molar, sodium ion in a concentration of about 1.9 Molar to about 2.7 Molar, acetate group in a concentration of 0 Molar to about 0.525 Molar, potassium ion in a concentration of 0 Molar to about 0.14 Molar, calcium ion in a concentration of 0 Molar to about 0.125 Molar, magnesium ion in a concentration of 0 Molar to about 0.09 Molar, and dextrose in a concentration of 0 Molar to about 0.4 Molar; said composition having a pH value of about 1 to about 2.5.
Claim 3
Dependent Claim
22 words
The sealed unit dose container in accordance with claim 1 containing about 4 to about 20 liters of said aqueous acid concentrate.
Claim 4
Dependent Claim
15 words
The sealed unit dose container in accordance with claim 1 wherein the container is collapsible.
Claim 5
Dependent Claim
27 words
The sealed unit dose container in accordance with claim 1 wherein the composition contains acetate group in a concentration of about 0.15 Molar to about 0.35 Molar.
Claim 6
Dependent Claim
26 words
The sealed unit dose container in accordance with claim 1 wherein the composition contains dextrose in a concentration of about 0.2 Molar to about 0.35 Molar.
Claim 7
Dependent Claim
137 words
An aqueous acid concentrate suitable for compounding a hemodialysis dialysate which comprises water, dissolved solid salts and hydrochloric acid in an amount of about 93.9 milliliters/liter to about 127.7 milliliters/liter (expressed as aqueous 11.6 N HCl); the composition containing chloride ion in a concentration of about 3.5 Molar to about 4.7 Molar, sodium ion in a concentration of about 1.9 Molar to about 2.7 Molar, acetate group in a concentration of 0 Molar to about 0.525 Molar, potassium ion in a concentration of 0 Molar to about 0.14 Molar, calcium ion in a concentration of 0 Molar to about 1.25 Molar, magnesium ion in a concentration of 0 Molar to about 0.09 Molar, and dextrose in a concentration of 0 Molar to about 0.4 Molar; said concentrate having a pH value of about 1 to about 2.5.
Claim 8
Dependent Claim
137 words
An aqueous acid concentrate suitable for compounding a hemodialysis dialysate which comprises water, dissolved solid salts and hydrochloric acid in an amount of about 93.9 milliliters/liter to about 127.7 milliliters/liter (expressed as aqueous 11.6 N HCl); the composition containing chloride ion in a concentration of about 3.5 Molar to about 4.7 Molar, sodium ion in a concentration of about 1.9 Molar to about 2.7 Molar, acetate group in a concentration of 0 Molar to about 0.525 Molar, potassium ion in a concentration of 0 Molar to about 0.14 Molar, calcium ion in a concentration of 0 Molar to about 1.25 Molar, magnesium ion in a concentration of 0 Molar to about 0.09 Molar, and dextrose in a concentration of 0 Molar to about 0.4 Molar; said concentrate having a pH value of about 1 to about 2.5.
Claim 9
Dependent Claim
21 words
The concentrate in accordance with claim 6 wherein the concentration of acetate group is about 0.15 Molar to about 0.35 Molar.
Claim 10
Dependent Claim
20 words
The concentrate in accordance with claim 6 wherein the concentration of dextrose is about 0.2 Molar to about 0.35 Molar.
References Cited (Backward Citations)
US4202760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |