Patent US5658281A successfully refreshed from Google Patents.
US5658281A
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Bipolar electrosurgical scissors and method of manufacture
Assignee: Covidien AG
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Filing: 1995-12-04
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Granted: 1997-08-19
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Expires: 2015-12-04
Abstract
Abstract A bipolar electrosurgical scissors has an improved coagulation capability. Both poles of electrosurgical energy are exposed on the exterior surfaces of each shearing member so that the scissors can be used to coagulate tissue using only one shearing member. There may be two or more electrically conductive regions on the exterior surface of each shearing member. The conductive regions may be formed by laminating, depositing, or inlaying electrically conductive material on the exterior surfaces. The conductive regions are electrically insulated from each other. In one embodiment, the shearing surfaces are also electrically conductive and are each connected to the same electrical pole. In another embodiment, the conductive material that forms one of the conductive regions on each exterior surface also extends through the shearing member to also form a conductive shearing surface.
Inventors
- 👤 David Nichols Heard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:56
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1442; A61B18/1445; A61B18/1206; A61B2018/1246; A61B2018/126; A61B2018/1405; A61B2018/1412; A61B2018/1467
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
121 words
A bipolar electrosurgical scissors comprising: first and second shearing members, each shearing member having a distal end for treatment of tissue; a pivoting joint connecting the first and second shearing members; a shearing surface on each shearing member located along the shearing member between the pivoting joint and the respective distal end; electrical connections on the scissors for receiving two poles of bipolar electrosurgical energy, and an exterior surface on each of the first and second shearing members, each exterior surface located generally opposite its respective shearing surface, each exterior surface having at least two exposed electrically conductive regions which are insulated from each other, wherein each pole is electrically connected to at least one conductive region on each exterior surface.
Claim 2
Dependent Claim
121 words
A bipolar electrosurgical scissors comprising: first and second shearing members, each shearing member having a distal end for treatment of tissue; a pivoting joint connecting the first and second shearing members; a shearing surface on each shearing member located along the shearing member between the pivoting joint and the respective distal end; electrical connections on the scissors for receiving two poles of bipolar electrosurgical energy, and an exterior surface on each of the first and second shearing members, each exterior surface located generally opposite its respective shearing surface, each exterior surface having at least two exposed electrically conductive regions which are insulated from each other, wherein each pole is electrically connected to at least one conductive region on each exterior surface.
Claim 3
Dependent Claim
33 words
The bipolar scissors of claim 1 wherein the shearing surfaces are electrically conductive and are electrically connected to the same pole such that there is no substantial electrical potential between the shearing surfaces.
Claim 4
Dependent Claim
16 words
The bipolar scissors of claim 1 wherein there are three conductive regions on each exterior surface.
Claim 5
Dependent Claim
27 words
The bipolar scissors of claim 3 wherein one of the conductive regions on each exterior surface is electrically connected to the same pole as the shearing surfaces.
Claim 6
Dependent Claim
28 words
The bipolar scissors of claim 1 wherein one of the conductive regions on each exterior surface extends through its respective shearing member to also form the shearing surface.
Claim 7
Dependent Claim
20 words
The bipolar scissors of claim 1 wherein the conductive regions comprise a laminated electrically conductive material on an insulative substrate.
Claim 8
Dependent Claim
20 words
The bipolar scissors of claim 1 wherein the conductive regions comprise an inlayed electrically conductive material in an insulative substrate.
Claim 9
Dependent Claim
19 words
The bipolar scissors of claim 1 wherein the conductive regions comprise an electrically conductive deposit on an insulative substrate.
Claim 10
Dependent Claim
21 words
The bipolar scissors of claim 1 wherein the shearing members are connected to an elongate shaft for insertion through a cannula.
Claim 11
Independent Claim
91 words
A method for constructing bipolar scissors having two shearing members, each shearing member having a shearing surface and an exterior surface located generally on the opposite side thereof, each exterior surface having at least first and second electrically conductive regions which are electrically insulated from each other, the method comprising the steps of: connecting each shearing surface to a first electrical pole; connecting the first conductive region on each exterior surface to the first electrical pole, and connecting the second conductive region on each exterior surface to a second electrical pole.
Claim 12
Independent Claim
91 words
A method for constructing bipolar scissors having two shearing members, each shearing member having a shearing surface and an exterior surface located generally on the opposite side thereof, each exterior surface having at least first and second electrically conductive regions which are electrically insulated from each other, the method comprising the steps of: connecting each shearing surface to a first electrical pole; connecting the first conductive region on each exterior surface to the first electrical pole, and connecting the second conductive region on each exterior surface to a second electrical pole.
Claim 13
Dependent Claim
23 words
The method of claim 10 further comprising the step of forming the conductive regions by laminated electrically conductive material on an insulative substrate.
Claim 14
Dependent Claim
23 words
The method of claim 10 further comprising the step of forming the conductive regions by inlaying electrically conductive material in an insulative substrate.
Claim 15
Dependent Claim
23 words
The method of claim 10 further comprising the step of forming the conductive regions by depositing electrically conductive material on an insulative substrate.
Claim 16
Dependent Claim
23 words
The method of claim 10 further comprising the step of pivoting the shearing members with respect to each other on a conductive pin.
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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) | 2000-08-18 | 2001-02-17 | 2001-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-18 | 2005-02-17 | 2005-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-18 | 2009-02-17 | 2009-08-19 | $7700.00 | Window Closed / Lapsed |