Patent US3683926A successfully refreshed from Google Patents.
US3683926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube for connecting blood vessels
Assignee: Sumitomo Pharma Co Ltd
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Filing: 1970-07-09
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Granted: 1972-08-15
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Expires: 1990-07-09
Abstract
Abstract A tube readily soluble into blood and useful as the support for connecting blood vessels, which is made of a composition comprising 70 to 90 percent by weight of sucrose, 6 to 25 percent by weight of a crystallization inhibitor therefor and 2 to 10 percent by weight of an elasticizer, shaped in a cylinder, Tletter or Y-letter form, tapered at both ends and provided grooves or protuberances circumferentially on the outer surface.
Inventors
- 👤 Jiro Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:45
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B2017/1107; A61B2017/1135; A61B2017/1139
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
13 words
The tube according to claim 1, wherein the composition comprises an antimicrobial agent.
Claim 2
Dependent Claim
14 words
The tube according to claim 1, wherein the composition comprises a blood coagulation inhibitor.
Claim 3
Dependent Claim
15 words
The tube according to claim 1, wherein the blood coagulation inhibitor is mucopolysaccharide or heparin.
Claim 4
Dependent Claim
15 words
The tube according to claim 1, wherein the tube is shaped in a cylinder form.
Claim 5
Dependent Claim
15 words
The tube according to claim 1, wherein the tube is shaped in a T-letter form.
Claim 6
Dependent Claim
15 words
The tube according to claim 1, wherein the tube is shaped in a Y-letter form.
Claim 7
Dependent Claim
14 words
The tube according to claim 1, wherein the tube is tapered to the ends.
Claim 8
Dependent Claim
18 words
The tube according to claim 1, wherein grooves are provided circumferentially on the outer surface of the tube.
Claim 9
Dependent Claim
18 words
The tube according to claim 1, wherein protuberances are provided circumferentially on the outer surface of the tube.
References Cited (Backward Citations)
US2127903A
Cited
GB591509A
Cited
US2953497A
Cited
US2903365A
Cited
US3155095A
Cited
US3496939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |