Patent US5352222A successfully refreshed from Google Patents.
US5352222A
Expired / Lapsed
US
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Surgical scissors with bipolar coagulation feature
Assignee: Everest Medical Corp
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Filing: 1994-03-15
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Granted: 1994-10-04
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Expires: 2014-03-15
Abstract
Abstract A bipolar electrosurgical scissors for use in open or endoscopic surgery has a pair of opposed blade members pivotally joined to one another and to the distal end of the scissors itself by a rivet which extends through a insulated bushing member. Each of the blade members comprises a blade support and a blade itself, each fabricated from metal, such as stainless steel. The blades are affixed to their associated supports by means of a suitable adhesive or adhesive composite material such as a fiberglass reinforced epoxy exhibiting dielectric properties. Cutting is performed, steel-on-steel, without causing a short circuit between the two blade supports which themselves function as the bipolar electrodes.
Inventors
- 👤 Mark A. Rydell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:17
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1442; A61B18/1445; A61B18/1402; A61B17/00; A61B2017/00831; A61B2017/0088; A61B17/28; A61B17/29; A61B2017/2926; A61B2017/2945; A61B2018/00053; A61B2018/00059; A61B2018/00071; A61B2018/00083; A61B2018/00107; A61B18/1206; A61B2018/1246; A61B2018/126; A61B2018/1405; A61B2018/1412; A61B2018/1425; A61B2018/1432
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
117 words
A bipolar electrosurgical instrument for cutting and coagulating tissue comprising: (a) first and second blade members each comprising a laminated assembly of a metal blade defining a shearing surface, a metal blade support and an intermediate electrically insulative bonding/spacing layer for joining said blade to said blade support; (b) means for pivotally joining said first and second blade members together with their respective shearing surfaces facing one another; (c) means coupled to at least one of said first and second blade members for imparting a scissors-like movement relative to the other of said first and second blade members; and (d) means for applying a voltage between the metal blade supports of said first and second blade members.
Claim 2
Dependent Claim
117 words
A bipolar electrosurgical instrument for cutting and coagulating tissue comprising: (a) first and second blade members each comprising a laminated assembly of a metal blade defining a shearing surface, a metal blade support and an intermediate electrically insulative bonding/spacing layer for joining said blade to said blade support; (b) means for pivotally joining said first and second blade members together with their respective shearing surfaces facing one another; (c) means coupled to at least one of said first and second blade members for imparting a scissors-like movement relative to the other of said first and second blade members; and (d) means for applying a voltage between the metal blade supports of said first and second blade members.
Claim 3
Dependent Claim
25 words
The bipolar electrosurgical instrument as in claim 1 wherein said shearing surfaces of said first and second blade members and said blade support are curved.
Claim 4
Dependent Claim
19 words
The bipolar electrosurgical instrument as in claim 2 wherein said intermediate, electrically insulating bonding/spacing layer is an epoxy material.
Claim 5
Dependent Claim
20 words
The bipolar electrosurgical instrument as in claim 3 wherein said epoxy material includes a fiberglass-mat of a predetermined thickness therein.
Claim 6
Dependent Claim
21 words
The bipolar electrosurgical instrument as in claim 3 wherein said epoxy material includes glass microspheres of a predetermined maximum diameter therein.
Claim 7
Dependent Claim
14 words
The bipolar electrosurgical instrument as in claim 3 wherein said metal is stainless steel.
Claim 8
Dependent Claim
160 words
A bipolar electrosurgical instrument for cutting and coagulating tissue comprising, in combination: (a) an elongated tubular member having a proximal end, a distal end and a lumen extending therebetween; (b) first and second blade members, each comprising a laminated assembly of a metal blade defining a shearing surface, a metal blade support and an intermediate electrically insulating spacing/bonding layer for joining said blade to said blade support; (c) means for pivotally joining said first and second blade members to the distal end of said elongated tubular member with their respective shearing surfaces facing one another; (d) a handle affixed to said proximal end of said tubular member; (e) means coupled to said handle and extending through said lumen for imparting a scissors-like movement to at least one of said first and second blade members relative to the other; and (f) means extending through said lumen for applying a voltage between said blade supports of said first and second blade members.
Claim 9
Dependent Claim
160 words
A bipolar electrosurgical instrument for cutting and coagulating tissue comprising, in combination: (a) an elongated tubular member having a proximal end, a distal end and a lumen extending therebetween; (b) first and second blade members, each comprising a laminated assembly of a metal blade defining a shearing surface, a metal blade support and an intermediate electrically insulating spacing/bonding layer for joining said blade to said blade support; (c) means for pivotally joining said first and second blade members to the distal end of said elongated tubular member with their respective shearing surfaces facing one another; (d) a handle affixed to said proximal end of said tubular member; (e) means coupled to said handle and extending through said lumen for imparting a scissors-like movement to at least one of said first and second blade members relative to the other; and (f) means extending through said lumen for applying a voltage between said blade supports of said first and second blade members.
Claim 10
Dependent Claim
19 words
The bipolar electrosurgical instrument as in claim 7 wherein said intermediate electronically insulating bonding layer is an epoxy material.
Claim 11
Dependent Claim
20 words
The bipolar electrosurgical instrument as in claim 8 wherein said epoxy material includes a fiberglass-mat of a predetermined thickness therein.
Claim 12
Dependent Claim
21 words
The bipolar electrosurgical instrument as in claim 8 wherein said epoxy material includes glass microspheres of a predetermined maximum diameter therein.
Claim 13
Dependent Claim
17 words
The bipolar electrosurgical instrument as in claim 7 wherein said first and second blade members are curved.
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) | 1997-10-03 | 1998-04-04 | 1998-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-03 | 2002-04-04 | 2002-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-03 | 2006-04-04 | 2006-10-04 | $7700.00 | Window Closed / Lapsed |