Patent US5718703A successfully refreshed from Google Patents.
US5718703A
Expired / Lapsed
US
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Method and apparatus for small needle electrocautery
Assignee: Covidien AG
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Filing: 1995-03-14
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Granted: 1998-02-17
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Expires: 2015-03-14
Abstract
Abstract An apparatus and method for cauterizing small vessels through small incisions or puncture openings is described. The apparatus is comprised of a pair of elongate electrodes capable of being inserted into a hollow needle. In a preferred embodiment, the elongate electrodes are disposed within a tube that is slidable in a longitudinal direction between a proximal position, in which the tube releases the electrodes into an outwardly biased position, and a distal position in which the electrodes are enclosed by the tube. The device is introduced into a body cavity with the tube in the distal position. The tube is then moved to its proximal position to release the electrodes, and a vessel is grasped using hooks at the electrode tips. A different electrical polarity is applied to each electrode, causing current to pass through the vessel from one electrode to the other to cauterize the vessel.
Inventors
- 👤 Albert K. Chin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:17
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1442; A61B2018/00053; A61B2018/00184; A61B2018/00196; A61B2018/00315; A61B2018/00345; A61B2018/00404; A61B2018/00571; A61B2018/00601; A61B18/1206; A61B2018/1246; A61B2018/1253; A61B2018/126
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
An electrocautery apparatus comprising: a handle; a first elongate electrode having a first section extending from the handle, and a second section folded back over the first section so as to dispose the first and second section in spaced laterial relationship, the second section having a free end spaced and detached from the handle and the first section of the electrode; and an actuator containing the first elongate electrode, at least one of the actuator and the elongate electrode being slidable relative to the other for moving at least one of the first and second sections towards the other of the first and second sections to selectively adjust the relative laterial separation of the first and second sections of the elongate electrode to engage opposite sides of a vessel to be cauterized therebetween the actuator containing the first and second sections in a lateral relationship.
Claim 2
Dependent Claim
145 words
An electrocautery apparatus comprising: a handle; a first elongate electrode having a first section extending from the handle, and a second section folded back over the first section so as to dispose the first and second section in spaced laterial relationship, the second section having a free end spaced and detached from the handle and the first section of the electrode; and an actuator containing the first elongate electrode, at least one of the actuator and the elongate electrode being slidable relative to the other for moving at least one of the first and second sections towards the other of the first and second sections to selectively adjust the relative laterial separation of the first and second sections of the elongate electrode to engage opposite sides of a vessel to be cauterized therebetween the actuator containing the first and second sections in a lateral relationship.
Claim 3
Dependent Claim
40 words
The apparatus of claim 1 further comprising: a second elongate electrode extending from the handle and positioned adjacent to the first section of the first elongate electrode; and insulating means insulating the first elongate electrode from the second elongate electrode.
Claim 4
Dependent Claim
78 words
The apparatus of claim 1 wherein the actuating means includes a tube disposed around first and second sections of the electrode and slidable between a distal position, wherein the first and second sections are spaced by a first distance, and a proximal position, wherein the second section is urged towards the first section by the tube such that the first and second sections are spaced by a second distance, the second distance being shorter than the first distance.
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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) | 2001-02-16 | 2001-08-18 | 2002-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-16 | 2005-08-18 | 2006-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-16 | 2009-08-18 | 2010-02-17 | $7700.00 | Window Closed / Lapsed |