US5810863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trocar including an obturator with a removable knife
Assignee: CooperSurgical Inc
•
Filing: 1996-06-06
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Granted: 1998-09-22
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Expires: 2016-06-06
Abstract
Abstract An obturator for a trocar having a shaft, pin, and removable knife. The pin mounts to the shaft and secures the knife thereto.
Inventors
- 👤 Philip L. Wolf
- 👤 Mark S. Hickman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:51
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3494; A61B17/3496; A61B17/3417; A61B2017/0046; A61B2017/00473
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
52 words
An obturator for a trocar, comprising: a shaft; a pin mounted to said shaft; a removable knife secured to said shaft by said pin, wherein said pin is pivotable relative to said shaft between a first position that engages said knife and a second position that disengages said pin from said knife.
Claim 2
Dependent Claim
52 words
An obturator for a trocar, comprising: a shaft; a pin mounted to said shaft; a removable knife secured to said shaft by said pin, wherein said pin is pivotable relative to said shaft between a first position that engages said knife and a second position that disengages said pin from said knife.
Claim 3
Dependent Claim
15 words
The obturator of claim 1, wherein said knife is rotatable with respect to said shaft.
Claim 4
Dependent Claim
15 words
The obturator of claim 1, wherein said knife is fixed with respect to said shaft.
Claim 5
Dependent Claim
28 words
The obturator of claim 1, wherein said knife further comprises: a head; and a neck integrally formed with said head and said neck having a substantially circular groove.
Claim 6
Dependent Claim
27 words
The obturator of claim 1, wherein said knife further comprises: a head; and a neck integrally formed with said head and said neck having an aperture therethrough.
Claim 7
Dependent Claim
83 words
A trocar, comprising: a cannula; an obturator substantially housed within said cannula, said obturator further comprises: a shaft; a removable knife mountable to said shaft; and a pin mounted to said shaft wherein said pin is pivotable relative to said shaft between a first position to engage said knife and a second position to disengage said knife and said pin further comprises: an elongated member; a tip extending from said member; and a bulge extending from said member and having an aperture therethrough.
Claim 8
Dependent Claim
83 words
A trocar, comprising: a cannula; an obturator substantially housed within said cannula, said obturator further comprises: a shaft; a removable knife mountable to said shaft; and a pin mounted to said shaft wherein said pin is pivotable relative to said shaft between a first position to engage said knife and a second position to disengage said knife and said pin further comprises: an elongated member; a tip extending from said member; and a bulge extending from said member and having an aperture therethrough.
Claim 9
Dependent Claim
70 words
An obturator comprising: a shaft; a removable knife mountable to said shaft; and a pin mounted to said shaft wherein said pin is pivotable relative to said shaft between a first position to engage said knife and a second position to disengage said knife and said pin further comprises: an elongated member; a tip extending from said member; and a bulge extending from said member and having an aperture therethrough.
Claim 10
Dependent Claim
70 words
An obturator comprising: a shaft; a removable knife mountable to said shaft; and a pin mounted to said shaft wherein said pin is pivotable relative to said shaft between a first position to engage said knife and a second position to disengage said knife and said pin further comprises: an elongated member; a tip extending from said member; and a bulge extending from said member and having an aperture therethrough.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-21 | 2002-03-23 | 2002-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-21 | 2006-03-23 | 2006-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-21 | 2010-03-23 | 2010-09-22 | $7700.00 | Window Closed / Lapsed |