EP0737446A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electrosurgical hemostatic device with recessed and deformable electrodes
Assignee: Ethicon Endo Surgery Inc
•
Filing: 1996-04-11
•
Granted: —
•
Expires: 2016-04-11
Abstract
Abstract An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedance, thickness, compressibility, density, vascularity, etc., especially in the performance of endoscopic procedures. The instrument provides two electrodes of different electrical potentials. One electrode is moveable with respect to the other electrode to vary the distances between the electrodes and thus the impedance of the tissue as presented to the generator. The electrode distances may be varied by an automated or user controlled device.
Inventors
- 👤 Dale R. Schulze
- 👤 William D. Fox
- 👤 David Yates
- 👤 Anil Nalagatla
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 10:49
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/068; A61B17/072; A61B17/07207; A61B18/00; A61B18/04; A61B18/12; A61B18/1206; A61B18/14; A61B18/1442; A61B18/1445; A61B18/1447; A61B17/11; A61B17/115; A61B17/1155; A61B17/32; A61B18/1402; A61B2017/07214; 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; A61B2018/00761; A61B2018/00773; A61B2018/00875; A61B2018/00886; A61B2018/124; A61B2018/1273; A61B90/00; A61B90/03; A61B2090/032
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
137 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 capable of engaging tissue therebetween; a first electrode of a first electrical potential; and a second electrode of a second electrical potential different from said first electrical potential, said first and second electrode arranged to receive electrosurgical energy therein; wherein said first electrode is located on said first interfacing surface and said second electrode is located on at least one of said first and second interfacing surfaces; and wherein said first electrode has a first position with respect to said said first interfacing surface, located a first distance from said second electrode and a second position with respect to said first interfacing surface, located a second distance from said second electrode.
Claim 2
Dependent Claim
26 words
The electrosurgical device of claim 1 wherein said first electrode is moveable with respect to said second electrode from said first position to said second position.
Claim 3
Dependent Claim
19 words
The electrosurgical device of claim 2 wherein said first electrode is moveable as electrosurgical energy is applied to tissue.
Claim 4
Dependent Claim
28 words
The electrosurgical device of claim 1 wherein said first electrode is adaptable in distance from said second electrode according to a parameter of tissue engaged by said surfaces.
Claim 5
Dependent Claim
13 words
The electrosurgical device of claim 1 wherein said first electrode comprises a spring.
Claim 6
Dependent Claim
110 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 capable of engaging tissue therebetween; a first electrode of a first electrical potential; a second electrode of a second electrical potential different from said first electrical potential, said first and second electrodes arranged to receive electrosurgical energy therein; a removable cartridge forming at least a portion of said interfacing surface, said cartridge including said first electrode wherein said first electrode is located on said portion of a said interfacing surface and said second electrode is located on at least one of said interfacing surfaces.
Claim 7
Dependent Claim
25 words
The electrosurgical device of claim 6 wherein said cartridge is selectable from a plurality of cartridges, said cartridge adapted for use in a predetermined application.
Claim 8
Dependent Claim
28 words
The electrosurgical device of claim 6 wherein said cartridge is selectable from a plurality of cartridges, said cartridge adapted for use with tissue having a predetermined tissue parameter.
Claim 9
Dependent Claim
13 words
The electrosurgical device of claim 8 wherein said tissue parameter is electrical impedance.
Claim 10
Dependent Claim
192 words
An electrosurgical device including first and second interchangeable cartridges, said device comprising an end effector capable of receiving electrosurgical energy therein, said end effector comprising: first and second opposing interfacing surfaces, said interfacing surfaces capable of engaging tissue therebetween, wherein each of said interchangeable cartridges is insertable into said end effector to form at least a portion of a said interfacing surface, each of said cartridges including a first electrode of a first electrical potential, wherein said first electrode of an inserted cartridge is located on said portion of a said interfacing surface; and a second electrode of a second electrical potential different from said first electrical potential, said first electrode of said inserted cartridge and said second electrode arranged to receive electrosurgical energy therein, said second electrode located on at least one of said interfacing surfaces; wherein said first electrode of said first cartridge is located a first distance from said second electrode when said first cartridge is inserted into said end effector, and wherein said first electrode of said second cartridge is located a second distance from said second electrode when said second cartridge is inserted into said end effector.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.