Patent US1555759A successfully refreshed from Google Patents.
Patent US4668224A successfully refreshed from Google Patents.
US4668224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidized cellulose as a medical lubricant
Assignee: Deseret Medical Inc
•
Filing: 1983-10-24
•
Granted: 1987-05-26
•
Expires: 2003-10-24
Abstract
Abstract The use of oxidized cellulose as a medical lubricant is disclosed wherein oxidized cellulose is employed as a mold release agent or a donning powder in the manufacture of surgical gloves as well as in other applications; medical devices and, particularly, a surgical glove, are provided having finely divided oxidized cellulose powder on the surface in a lubricity imparting coverage.
Inventors
- 👤 David J. Lentz
- 👤 Mohammad A. Khan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:36
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/04; A61L31/042; A61L31/08; A61L31/10; A41; A41D; A41D19/00; A41D19/0055; A41D19/0058; A41D19/0062; A61L2400/00; A61L2400/10
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
20 words
A surgical glove having on at least one surface thereof a lubricity imparting amount of finely divided oxidized cellulose powder.
Claim 2
Dependent Claim
20 words
A surgical glove having on at least one surface thereof a lubricity imparting amount of finely divided oxidized cellulose powder.
Claim 3
Dependent Claim
20 words
The surgical glove of claim 1 wherein said oxidized cellulose has a particle size of about 4 to 60 microns.
Claim 4
Dependent Claim
19 words
The surgical glove of claim 2 wherein said oxidized cellulose has a carboxyl content of about 8-18% by weight.
Claim 5
Dependent Claim
23 words
The surgical glove of claim 3 wherein said oxidized cellulose provides a pH of about 1.0 to 3.5 in a 1% aqueous solution.
Claim 6
Dependent Claim
19 words
The surgical glove of claim 4 wherein said oxidized cellulose is obtained by reacting cellulose with a nitrogen oxide.
Claim 7
Dependent Claim
18 words
The surgical glove of claim 4 wherein said oxidized cellulose is obtained by reacting cellulose with a periodate.
Claim 8
Dependent Claim
26 words
A medical device such as condom, catheter, drain, tube, or the like having on the surface thereof a lubricity imparting amount of finely divided oxidized cellulose.
Claim 9
Dependent Claim
26 words
A medical device such as condom, catheter, drain, tube, or the like having on the surface thereof a lubricity imparting amount of finely divided oxidized cellulose.
Claim 10
Dependent Claim
20 words
The medical device of claim 7 wherein said oxidized cellulose has a particle size of about 4 to 60 microns.
Claim 11
Dependent Claim
19 words
The medical device of claim 8 wherein said oxidized cellulose has a carboxyl content of approximately 8-18% by weight.
Claim 12
Dependent Claim
23 words
The medical device of claim 9 wherein said oxidized cellulose provides a pH of about 1.0 to 3.5 in a 1% aqueous solution.
Claim 13
Dependent Claim
21 words
The medical device of claim 10 wherein said oxidized cellulose is the product of reacting cellulose with an oxide of nitrogen.
Claim 14
Dependent Claim
19 words
The medical device of claim 10 wherein said oxidized cellulose is the product of reacting cellulose with a periodate.
Claim 15
Dependent Claim
34 words
A process for lubricating the surfaces of surgical devices such as catheters, condoms, tubes, drains, and the like, which comprises applying to a surface of said device a lubricity imparting amount of oxidized cellulose.
Claim 16
Dependent Claim
34 words
A process for lubricating the surfaces of surgical devices such as catheters, condoms, tubes, drains, and the like, which comprises applying to a surface of said device a lubricity imparting amount of oxidized cellulose.
Claim 17
Dependent Claim
19 words
The process of claim 13 wherein said oxidized cellulose has a particle size of about 4 to 60 microns.
Claim 18
Dependent Claim
18 words
The process of claim 14 wherein said oxidized cellulose has a carboxyl content of approximately 8-18% by weight.
Claim 19
Dependent Claim
22 words
The process of claim 15 wherein said oxidized cellulose provides a pH of about 1.0 to 3.5 in a 1% aqueous solution.
Claim 20
Dependent Claim
19 words
The process of claim 16 wherein said oxidized cellulose is prepared by reacting cellulose with an oxide of nitrogen.
Claim 21
Dependent Claim
17 words
The process of claim 16 wherein said oxidized cellulose is prepared by reacting cellulose with a periodate.
Claim 22
Dependent Claim
16 words
A cellulose lubricated surgical glove formed by the process of any of claims 13 to 24.
References Cited (Backward Citations)
US2507244A
Cited
US3861396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |