Patent US4863423A successfully refreshed from Google Patents.
US4863423A
Expired / Lapsed
US
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Catheter and cannula assembly
Assignee: SMITHS INDUSTRIES PLC A UNITED KINGDOM CORP
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Filing: 1988-03-23
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Granted: 1989-09-05
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Expires: 2008-03-23
Abstract
Abstract The invention provides an assembly of a catheter and a cannula for cooperation therewith, wherein the catheter is provided with visible gradations disposed on the surface of the catheter adjacent its hub. The catheter cooperates with the cannula which is provided with gradations adjacent its distal tip. The arrangement in accordance with this invention allows for the accurate placement of small biological particles such as human embryos to appropriate body cavities.
Inventors
- 👤 Henry G. Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:40
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61B; A61B90/00; A61B90/39; A61B2090/3937
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
63 words
An assembly of a catheter and a cannula therefor, said catheter and said cannula each having a first end and a second end, wherein visible gradations are disposed on the surface of the catheter adjacent a hub at its first end; characterized in that the cannula is substantially rigid and is provided with visible gradations adjacent its tip at the second end thereof.
Claim 2
Dependent Claim
63 words
An assembly of a catheter and a cannula therefor, said catheter and said cannula each having a first end and a second end, wherein visible gradations are disposed on the surface of the catheter adjacent a hub at its first end; characterized in that the cannula is substantially rigid and is provided with visible gradations adjacent its tip at the second end thereof.
Claim 3
Dependent Claim
42 words
An assembly according to claim 1, characterized in that each of the catheter and cannula are provided adjacent their first ends with hubs, said hubs being interlockable in a closed position so that the catheter is in its position of maximum extension.
Claim 4
Dependent Claim
25 words
An assembly according to claim 1, characterized in that the catheter is soft, flexible and is provided with a chamfered outlet at its second end.
Claim 5
Dependent Claim
21 words
An assembly according to claim 1, characterized in that the catheter is provided with a side outlet adjacent its second end.
References Cited (Backward Citations)
US1995051A
Cited
US3094124A
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US3399668A
Cited
US4194513A
Cited
US4500313A
Cited
US4738658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |