Patent US4819640A successfully refreshed from Google Patents.
US4819640A
Expired / Lapsed
US
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Microsurgery anastomosis tool
Assignee: Montefiore Medical Center
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Filing: 1986-10-01
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Granted: 1989-04-11
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Expires: 2006-10-01
Abstract
Abstract A microsurgery tool for use in anastomosis of small vessels has a thin shaft with a pair of forwardly projecting tines defining a throat for receiving the pointed end of a suture needle. The microsurgery tool is inserted between confronting ends of vessels into engagement with the inner wall of one vessel for receiving a suture needle point passing through the outer wall of the vessel and thereafter is withdrawn from the space between the vessels to engage the outer surface of the other vessel where it receives the pointed end of the same suture needle passing through the inner wall of the other vessel.
Inventors
- 👤 Krishna Narayanan
- 👤 Marc D. Liang
- 👤 Frank R. Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:58
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/04; A61B17/0482
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
85 words
A microsurgery tool for use in combination with a microsurgery suture needle to anastomosize small vessels, comprising: a thin shaft secured at one end to a holding member and having, at its distal end a pair of projecting tines defining a sloping throat therebetween, said shaft being adapted to enter into a small vessel through a cut in said vessel and being further adapted to receive in said sloping throat the pointed end of a microsurgery suture needle penetrating said vessel adjacent to said cut.
Claim 2
Dependent Claim
85 words
A microsurgery tool for use in combination with a microsurgery suture needle to anastomosize small vessels, comprising: a thin shaft secured at one end to a holding member and having, at its distal end a pair of projecting tines defining a sloping throat therebetween, said shaft being adapted to enter into a small vessel through a cut in said vessel and being further adapted to receive in said sloping throat the pointed end of a microsurgery suture needle penetrating said vessel adjacent to said cut.
Claim 3
Dependent Claim
30 words
The microsurgery tool of claim 1 in which the said sloping throat has a scoop-like shape to direct the path of a suture needle point advancing in the said throat.
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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |