US4588407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial organ and method for manufacture thereof
Assignee: Asahi Kasei Medical Co Ltd
•
Filing: 1983-09-07
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Granted: 1986-05-13
•
Expires: 2003-09-07
Abstract
Abstract An artificial organ is disclosed which has a film of either fat-soluble vitamin or a mixture of fat-soluble vitamin with glycerin deposited on the surfaces of parts of the artificial organ adapted to contact body fluid under treatment in a zone for flow of the body fluid within the artificial organ. Also disclosed is a sterilized artificial organ which has the aforementioned coat further subjected to contact with a physiologically harmless liquid and a treatment for sterilization.
Inventors
- 👤 Keinosuke Isono
- 👤 Keiji Naoi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:51
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0081; B01D67/0088; B01D63/00; B01D63/02; B01D63/021; B01D63/0233; B01D65/00; B01D65/02; B01D65/022; B01D2321/00; B01D2321/32
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
44 words
An artificial organ having a zone for flow of a body fluid within said artificial organ; and a film of a fat-soluble vitamin deposited on surfaces of parts of said artificial organ adapted to contact with said body fluid in motion through said zone.
Claim 2
Dependent Claim
44 words
An artificial organ having a zone for flow of a body fluid within said artificial organ; and a film of a fat-soluble vitamin deposited on surfaces of parts of said artificial organ adapted to contact with said body fluid in motion through said zone.
Claim 3
Dependent Claim
24 words
The artificial organ according to claim 1, wherein at least part of said zone for flow of said body fluid comprises body fluid-permeating membranes.
Claim 4
Dependent Claim
17 words
The artificial organ according to claim 2, wherein said body fluid-permeating membranes are membranes of regenerated cellulose.
Claim 5
Dependent Claim
17 words
The artificial organ according to claim 3, wherein said regenerated cellulose membranes are hollow fiber type membranes.
Claim 6
Dependent Claim
32 words
The artificial organ according to claim 2, wherein said fat-soluble vitamin is at least one member selected from the group consisting of vitamin A, vitamin D, vitamin E, vitamin K and ubiquinone.
Claim 7
Dependent Claim
14 words
The artificial organ according to claim 5, wherein said fat-soluble vitamin is vitamin E.
Claim 8
Dependent Claim
25 words
The artificial organ according to claim 2, wherein said artificial organ is an artificial kidney, an artificial liver, an artificial lung or a plasma separator.
Claim 9
Dependent Claim
15 words
The artificial organ according to claim 7, wherein said artificial organ is an artificial kidney.
Claim 10
Dependent Claim
25 words
The artificial organ according to claim 1, wherein said film of a fat-soluble vitamin has been contacted with a physiologically harmless liquid and then sterilized.
Claim 11
Dependent Claim
17 words
The artificial organ according to claim 1, wherein said film of a fat-soluble vitamin additionally contains glycerin.
Claim 12
Dependent Claim
22 words
The artificial organ according to claim 10, wherein the weight ratio of said fat-soluble vitamin and glycerin is from 1:100 to 1:1.
Claim 13
Dependent Claim
21 words
The artificial organ according to claim 11, wherein the weight ratio of said fat-soluble vitamin and glycerin from 1:50 to 1:2.7.
Claim 14
Dependent Claim
19 words
The artificial organ according to claim 2, wherein said film has a thickness of from 0.0001 to 0.1 μm.
Claim 15
Dependent Claim
19 words
The artificial organ according to claim 13, wherein said film has a thickness of from 0.002 to 0.05 μm.
Claim 16
Dependent Claim
27 words
The artificial organ according to claim 6, wherein said regenerated cellulose membranes are hollow fiber type members, and said film of a fat-soluble vitamin additionally contains glycerin.
Claim 17
Dependent Claim
34 words
The artificial organ according to claim 15, wherein the weight ratio of said fat-soluble vitamin and glycerin is from 1:50 to 1:2.7 and said film has a thickness of from 0.002 to 0.05 μm.
References Cited (Backward Citations)
US4211602A
Cited
US4354933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |