Patent US3322508A successfully refreshed from Google Patents.
Patent US4626253A successfully refreshed from Google Patents.
US4626253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical hemostat comprising oxidized cellulose
Assignee: Ethicon Inc
•
Filing: 1984-10-05
•
Granted: 1986-12-02
•
Expires: 2004-10-05
Abstract
Abstract A surgical hemostat comprising oxidized cellulose having a warp knit tricot construction which provides a fabric density of at least 0.03 g/cm2, air porosity of less than 150 cm3/sec/cm2, and liquid absorption of at least 3 times the dry weight of the fabric.
Inventors
- 👤 Cecil H. Broadnax, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:58
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/01; A61F13/01034; A61F13/36; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/28; D; D04; D04B; D04B21/00; A61F13/84; A61F13/8405; A61F2013/00089; A61F2013/00106; A61F2013/00238; A61F2013/00361; A61F2013/00365; A61F2013/00463; A61F2013/00472; A61L2400/00; A61L2400/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
A surgical hemostat comprising a warp knit tricot fabric constructed of yarns of oxidized cellulose, said yarns being derived from bright rayon yarns of about 40 to 80 total denier, said fabric having a density of at least 0.03 g/cm 2 , air porosity of less than 150 cm 3 /sec/cm 2 , and liquid absorption of at least 3 times the dry weight of the fabric and at least 0.1 g water per cm 2 of fabric.
Claim 2
Dependent Claim
78 words
A surgical hemostat comprising a warp knit tricot fabric constructed of yarns of oxidized cellulose, said yarns being derived from bright rayon yarns of about 40 to 80 total denier, said fabric having a density of at least 0.03 g/cm 2 , air porosity of less than 150 cm 3 /sec/cm 2 , and liquid absorption of at least 3 times the dry weight of the fabric and at least 0.1 g water per cm 2 of fabric.
Claim 3
Dependent Claim
16 words
The hemostat of claim 1 wherein said bright rayon yarn contains from 10 to 25 filaments.
Claim 4
Dependent Claim
18 words
The hemostat of claim 2 wherein said yarn contains 18 filaments and has a total denier of 60.
Claim 5
Dependent Claim
40 words
The hemostat of claim 3 wherein said tricot fabric has a density of about 0.05 g/cm 2 , air porosity of about 60 cm 3 /sec/cm 2 and liquid absorption of about 3.8 times the dry weight of the fabric.
Claim 6
Dependent Claim
68 words
A surgical hemostat comprising a warp knit tricot fabric constructed of oxidized cellulose yarn of about 40 to 80 denier, said fabric having a density of at least 0.03 g/cm 2 , air porosity of less than 150 cm 3 /sec/cm 2 , and liquid absorption of at least 3 times the dry weight of the fabric and at least 0.1 g water per cm 2 of fabric.
Claim 7
Dependent Claim
68 words
A surgical hemostat comprising a warp knit tricot fabric constructed of oxidized cellulose yarn of about 40 to 80 denier, said fabric having a density of at least 0.03 g/cm 2 , air porosity of less than 150 cm 3 /sec/cm 2 , and liquid absorption of at least 3 times the dry weight of the fabric and at least 0.1 g water per cm 2 of fabric.
Claim 8
Dependent Claim
33 words
The hemostat of claim 5 wherein the knit construction is as follows: front bar 1-0, 10-11 back bar 2-3, 1-0 and the ratio of back bar to front bar runners is about 2.7.
Claim 9
Dependent Claim
23 words
The hemostat of claim 6 wherein the front bar runner is about 190 inches and the back bar runner is about 70 inches.
Claim 10
Dependent Claim
37 words
The hemostat of claim 6 having a density of about 0.05 g/cm 2 , air porosity of about 60 cm 3 /sec/cm 2 , and liquid absorption of about 3.8 times the dry weight of the fabric.
Claim 11
Dependent Claim
17 words
The hemostat of claim 6 wherein said tricot fabric is a 32 gauge, 12 inch quality fabric.
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) | 1989-12-01 | 1990-06-02 | 1990-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-01 | 1994-06-02 | 1994-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-01 | 1998-06-02 | 1998-12-02 | $7700.00 | Window Closed / Lapsed |