Patent EP0722696A1 successfully refreshed from Google Patents.
EP0722696A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electrosurgical hemostatic device with revised and/or offset electrodes
Assignee: Ethicon Endo Surgery Inc
•
Filing: 1996-01-17
•
Granted: —
•
Expires: 2016-01-17
Abstract
Abstract An electrosurgical instrument (10) is provided for cauterization and/or welding of tissue of varying impedances, thicknesses and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue between an electrode associated with a first pole of a bipolar energy source located on one interfacing surface off a first element, and a second interfacing surface of a second element. The first and second elements are used to engage and compress tissue between the first and second interfacing surfaces. A second electrode associated with a second pole is located one of the two interfacing surfaces. The first electrode is either recessed into the first tissue contacting surface and/or offset from the second electrode on the same or opposing surfaces. A preferred application of the invention is in a cutting instrument wherein a hemostatic line is formed along a cut line using RF energy.
Inventors
- 👤 David C. Yates
- 👤 James W. Voegle
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 10:17
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/115; A61B17/068; A61B17/072; A61B17/07207; A61B18/00; A61B18/04; A61B18/12; A61B18/1206; A61B18/14; A61B18/1442; A61B18/1445; A61B18/1447; A61B17/32; A61B18/1402; A61B17/00491; A61B2017/00504; A61B2018/00315; A61B2018/00345; A61B2018/00404; A61B2018/00571; A61B2018/00601; A61B2018/00636; A61B2018/00642; A61B2018/00666; A61B2018/00672; A61B2018/00678; A61B2018/00684; A61B2018/00696; A61B2018/00702; A61B2018/00708; A61B2018/00773; A61B2018/00875; A61B2018/1273; A61B2018/1452; A61B2018/1455; A61B90/00; A61B90/03; A61B2090/032
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
An electrosurgical device having an end effector capable of receiving electrosurgical energy therein, said end effector comprising: first and second opposing interfacing surfaces, said interfacing surfaces being capable of engaging tissue therebetween, at least one of said first and second interfacing surfaces including a recessed portion; and electrically isolated first and second poles comprising electrically different electrodes capable of conducting electrosurgical energy therethrough, said first pole comprising a first electrode of a first electrical potential and a second pole comprising a second electrode of a second electrical potential different from said first potential; wherein: said first electrode is located on at least one of said interfacing surfaces; said second electrode is located on at least one of said interfacing surfaces; a portion of at least one of said electrode is located on a said recessed portion; and said electrodes are arranged so that electrosurgical energy may be communicated between said poles through the tissue.
Claim 2
Dependent Claim
38 words
The electrosurgical device of claim 1 wherein a portion of said second interfacing surface comprises a ridge extending from said second interfacing surface to form a tissue compression zone between interfacing surfaces, said ridge including said recessed portion.
Claim 3
Dependent Claim
74 words
The electrosurgical device of claim 1 wherein a portion of said second interfacing surface comprises a ridge extending from said second interfacing surface to form a tissue compression zone between interfacing surfaces, wherein said interfacing surface includes said recessed portion and wherein said ridge is adapted to compress tissue into said recessed portion to cause the tissue to make electrical contact with said portion of at least one electrode located at said recessed portion.
Claim 4
Dependent Claim
36 words
The electrosurgical device of any one of claims 1 to 3 wherein said end effector further comprises: at least one staple and at least one driver adapted to drive said at least one staple through tissue.
Claim 5
Dependent Claim
119 words
The electrosurgical device of claim 4, wherein: said device includes a cutting element adapted to divide tissue engaged by said interfacing surfaces; and said end effector further comprises: a cartridge containing at least one row of staples, having a slot extending longitudinally therethrough for receiving the cutting element, said slot being arranged to permit said cutting element to travel laterally to said at least one row of staples, said cartridge forming the second interfacing surface; said at least one drive is adapted to apply said at least one row of staples to tissue engaged by said effector; and said device includes an anvil for receiving and forming said staples, said anvil forming a portion of the first interfacing surface.
Claim 6
Dependent Claim
146 words
An electrosurgical device having an end effector capable of receiving electrosurgical energy therein, said end effector comprising: first and second opposing interfacing surfaces, said interfacing surfaces being capable of engaging tissue therebetween, at least one of said first and second interfacing surfaces including a recessed portion; electrically isolated first and second poles comprising electrically opposite electrodes capable of conducting bipolar energy therethrough, said first pole comprising a first electrode of a first electrical potential and said second pole comprising a second electrode of a second electrical potential; wherein said first electrode is located on at least one of said interfacing surfaces and said second electrode is located on at least one of said interfacing surfaces, and wherein at least one of said electrodes is located either: A) on a said recessed portion, or B) offset from the electrically opposite electrode with respect to said interfacing surfaces.
Claim 7
Dependent Claim
35 words
The electrosurgical device of claim 6 wherein said at least one of said electrodes is located on a said recessed portion, and is offset from the electrically opposite electrode with respect to said interfacing surfaces.
Claim 8
Dependent Claim
51 words
The electrosurgical device of claim 6 wherein a first portion of said at least one of said electrodes is located on a said recessed portion and wherein a second portion of said at least one of said electrodes is offset from the electrically opposite electrode with respect to said interfacing surfaces.
Claim 9
Dependent Claim
52 words
The electrosurgical device of claim 8, said electrodes including a length at which said electrodes are not offset from each other with respect to said interfacing surfaces, wherein at least one of said electrodes is recessed in said end effector where said first and second electrodes are not offset from each other.
Claim 10
Dependent Claim
72 words
An electrosurgical device having an end effector capable of receiving electrosurgical energy therein, said end effector comprising: first and second opposing interfacing surfaces, said interfacing surfaces being capable of engaging tissue therebetween, at least one of said first and second interfacing surfaces comprising a recessed portion, said recessed portion comprising a first electrode of a first electrical potential of an electrosurgical system, said first electrode being capable of conducting electrosurgical energy therethrough.
References Cited (Backward Citations)
US4671274A
Cited
EP0210125A1
Cited
US5151102A
Cited
US5290287A
Cited
EP0589453A2
Cited
EP0596436A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.