US5733283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat loop bipolar electrode tips for electrosurgical instrument
Assignee: VFSC DELAWARE Inc
•
Filing: 1996-06-05
•
Granted: 1998-03-31
•
Expires: 2016-06-05
Abstract
Abstract An electrode tip is provided for use in a bi polar electrosurgical instrument. The electrode tip has a generally loop shaped working portion, including a first and second electrode, The first electrode is generally loop shaped. The second electrode generally surrounds the first electrode and is generally spaced from and coplanar with the first electrode. The electrodes have sharp edges in cross-section which emit concentrated energy in the radial direction.
Inventors
- 👤 Jerry L. Malis
- 👤 Martin T. Mortimer
- 👤 Leonard Malis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1206; A61B2018/1246; A61B2018/1253; A61B2018/126; A61B2018/1405; A61B2018/1407; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
61 words
An electrode tip for an electrosurgical instrument, the electrode tip comprising an electrode, the electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the working portion being generally rectangular in cross-section and circumferentially unattached to any surrounding structure, wherein the working portion has a cross-sectional width of about 0.15 mm or about 0.23 mm.
Claim 2
Dependent Claim
61 words
An electrode tip for an electrosurgical instrument, the electrode tip comprising an electrode, the electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the working portion being generally rectangular in cross-section and circumferentially unattached to any surrounding structure, wherein the working portion has a cross-sectional width of about 0.15 mm or about 0.23 mm.
Claim 3
Dependent Claim
26 words
An electrode tip according to claim 1 wherein the generally loop shaped working portion of the electrode is generally circular, semicircular, parabolic or rectangular in shape.
Claim 4
Dependent Claim
29 words
An electrode tip according to claim 1 wherein the electrode is formed from the group of materials consisting of stainless steel, tungsten, a nickel and chromium alloy and titanium.
Claim 5
Dependent Claim
21 words
An electrode tip according to claim 1 wherein the electrode has cross-sectional thickness of about 0.13 mm to about 0.38 mm.
Claim 6
Dependent Claim
21 words
An electrode tip according to claim 1 wherein the area of the rectangular cross-section is generally uniform throughout the working portion.
Claim 7
Dependent Claim
17 words
An electrode tip according to claim 1 wherein the electrode material is continuous through the working portion.
Claim 8
Dependent Claim
77 words
An electrode tip for an electrosurgical instrument comprising: (a) a first electrode having a working portion that is generally loop shaped and has sharp edges in cross-section; and (b) a second electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the second electrode generally surrounding at least a part of the working portion of the first electrode, the second electrode being generally spaced from and coplanar with the first electrode.
Claim 9
Dependent Claim
77 words
An electrode tip for an electrosurgical instrument comprising: (a) a first electrode having a working portion that is generally loop shaped and has sharp edges in cross-section; and (b) a second electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the second electrode generally surrounding at least a part of the working portion of the first electrode, the second electrode being generally spaced from and coplanar with the first electrode.
Claim 10
Dependent Claim
18 words
An electrode tip according to claim 7 wherein the first and second electrodes are generally rectangular in cross-section.
Claim 11
Dependent Claim
31 words
An electrosurgical instrument according to claim 7 wherein the spacing between the working portions of the first and second electrodes is generally equal along the entire length of the working portions.
Claim 12
Dependent Claim
15 words
An electrode tip according to claim 7 wherein the first electrode is a closed loop.
Claim 13
Dependent Claim
16 words
An electrode tip according to claim 7 wherein the second electrode is an almost closed loop.
Claim 14
Dependent Claim
24 words
An electrode tip according to claim 7 wherein the first electrode is a closed loop and the second electrode is an almost closed loop.
Claim 15
Dependent Claim
29 words
An electrode tip according to claim 7 wherein the generally loop shaped working portion of the first and second electrodes are generally circular, semicircular, parabolic or rectangular in shape.
Claim 16
Dependent Claim
32 words
An electrode tip according to claim 7 wherein the first and second electrodes are formed from the group of materials consisting of stainless steel, tungsten, a nickel and chromium alloy, and titanium.
Claim 17
Dependent Claim
137 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip, the tip including (i) a first electrode extending from the distal end, the first electrode having a working portion that is generally loop shaped and is generally rectangular in cross-section, the first electrode adapted to be connected to one pole of a bipolar generator, and (ii) a second electrode extending from the distal end, the second electrode having a working portion that is generally loop shaped and is generally rectangular in cross-section, the second electrode adapted to be connected to the other pole of the bipolar generator, the second electrode generally surrounding at least a part of the working portion of the first electrode, the second electrode being generally spaced from and coplanar with the first electrode.
Claim 18
Dependent Claim
137 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip, the tip including (i) a first electrode extending from the distal end, the first electrode having a working portion that is generally loop shaped and is generally rectangular in cross-section, the first electrode adapted to be connected to one pole of a bipolar generator, and (ii) a second electrode extending from the distal end, the second electrode having a working portion that is generally loop shaped and is generally rectangular in cross-section, the second electrode adapted to be connected to the other pole of the bipolar generator, the second electrode generally surrounding at least a part of the working portion of the first electrode, the second electrode being generally spaced from and coplanar with the first electrode.
Claim 19
Dependent Claim
60 words
An electrosurgical instrument according to claim 15 further comprising: (c) first and second conductors each connected at one end to the respective first and second electrodes and adapted for being connected at the other end to the respective poles of the bipolar generator, the first and second conductors extending through the handle from the proximal end to the distal end.
Claim 20
Dependent Claim
31 words
An electrosurgical instrument according to claim 15 wherein the spacing between the working portions of the first and second electrodes is generally equal along the entire length of the working portions.
Claim 21
Dependent Claim
15 words
An electrosurgical instrument according to claim 15 wherein the first electrode is a closed loop.
Claim 22
Dependent Claim
16 words
An electrosurgical instrument according to claim 15 wherein the second electrode is an almost closed loop.
Claim 23
Dependent Claim
24 words
An electrosurgical instrument according to claim 15 wherein the first electrode is a closed loop and the second electrode is an almost closed loop.
Claim 24
Dependent Claim
29 words
An electrosurgical instrument according to claim 15 wherein the generally loop shaped working portion of the first and second electrodes are generally circular, semicircular, parabolic or rectangular in shape.
Claim 25
Dependent Claim
32 words
An electrosurgical instrument according to claim 15 wherein the first and second electrodes are formed from the group of materials consisting of stainless steel, tungsten, a nickel and chromium alloy, and titanium.
Claim 26
Dependent Claim
33 words
An electrosurgical instrument according to claim 15 further comprising: (c) an irrigation conduit extending through the handle from the proximal end to the distal end for delivering irrigation fluid to the distal end.
Claim 27
Dependent Claim
98 words
An electrosurgical instrument according to claim 15 wherein the first and second electrodes include non-working portions, the instrument further comprising: (c) a tip mounting for maintaining the first and second electrodes in the spaced relationship and for attaching the electrode tip to the handle, the tip mounting formed from first and second generally T-shaped pieces of material attached to each other, at least a part of the non-working portions of the first and second electrodes being sandwiched between the first and second T-shaped pieces of material, a vertical portion of the tip mounting being attached to the handle.
Claim 28
Dependent Claim
129 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip, the tip including (i) a first electrode extending from the distal end, the first electrode having a working portion that is generally loop shaped and is generally rectangular in cross-section, the first electrode adapted to be connected to one pole of a bipolar generator, and (ii) a second electrode extending from the distal end, the second electrode being generally hook shaped and having a working portion that is generally rectangular in cross-section, the second electrode adapted to be connected to the other pole of the bipolar generator, the second electrode generally hooking around the first electrode, the second electrode being generally spaced from and coplanar with the first electrode.
Claim 29
Dependent Claim
129 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip, the tip including (i) a first electrode extending from the distal end, the first electrode having a working portion that is generally loop shaped and is generally rectangular in cross-section, the first electrode adapted to be connected to one pole of a bipolar generator, and (ii) a second electrode extending from the distal end, the second electrode being generally hook shaped and having a working portion that is generally rectangular in cross-section, the second electrode adapted to be connected to the other pole of the bipolar generator, the second electrode generally hooking around the first electrode, the second electrode being generally spaced from and coplanar with the first electrode.
Claim 30
Dependent Claim
18 words
An electrosurgical instrument according to claim 25 wherein the second electrode hooks almost completely around the first electrode.
Claim 31
Dependent Claim
54 words
An electrode tip for an electrosurgical instrument, the electrode tip comprising an electrode, the electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the electrode having only one end adapted to be connected to a conductor, and the working portion being circumferentially unattached to any surrounding structure.
Claim 32
Dependent Claim
54 words
An electrode tip for an electrosurgical instrument, the electrode tip comprising an electrode, the electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the electrode having only one end adapted to be connected to a conductor, and the working portion being circumferentially unattached to any surrounding structure.
Claim 33
Dependent Claim
15 words
An electrode tip according to claim 27 wherein the electrode is generally rectangular in cross-section.
Claim 34
Dependent Claim
17 words
An electrode tip according to claim 27 wherein the electrode material is continuous through the working portion.
Claim 35
Dependent Claim
75 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip including an electrode extending from the distal end, the electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the electrode including a single lead section for attachment of the electrode to one pole of a bipolar generator, and the working portion being circumferentially unattached to any surrounding structure.
Claim 36
Dependent Claim
75 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip including an electrode extending from the distal end, the electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the electrode including a single lead section for attachment of the electrode to one pole of a bipolar generator, and the working portion being circumferentially unattached to any surrounding structure.
Claim 37
Dependent Claim
15 words
An electrosurgical instrument according to claim 30 wherein the electrode is generally rectangular in cross-section.
Claim 38
Dependent Claim
17 words
An electrosurgical instrument according to claim 30 wherein the electrode material is continuous through the working portion.
Claim 39
Dependent Claim
75 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip directly connected to, and supported by, the handle, the electrode tip including an electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the working portion being circumferentially unattached to any surrounding structure, wherein the working portion has a cross-sectional width of about 0.15 mm or about 0.23 mm.
Claim 40
Dependent Claim
75 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip directly connected to, and supported by, the handle, the electrode tip including an electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the working portion being circumferentially unattached to any surrounding structure, wherein the working portion has a cross-sectional width of about 0.15 mm or about 0.23 mm.
Claim 41
Dependent Claim
15 words
An electrosurgical instrument according to claim 33 wherein the electrode is generally rectangular in cross-section.
Claim 42
Dependent Claim
17 words
An electrosurgical instrument according to claim 33 wherein the electrode material is continuous through the working portion.
Claim 43
Dependent Claim
61 words
An electrode tip for an electrosurgical instrument, the electrode tip comprising an electrode, the electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the working portion being generally rectangular in cross-section and circumferentially unattached to any surrounding structure, wherein the working portion has a cross-sectional thickness of about 0.13 mm to about 0.38 mm.
Claim 44
Dependent Claim
61 words
An electrode tip for an electrosurgical instrument, the electrode tip comprising an electrode, the electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the working portion being generally rectangular in cross-section and circumferentially unattached to any surrounding structure, wherein the working portion has a cross-sectional thickness of about 0.13 mm to about 0.38 mm.
Claim 45
Dependent Claim
23 words
An electrode tip according to claim 36 wherein the working portion has a cross-sectional width of about 0.15 mm or about 0.23 mm.
Claim 46
Dependent Claim
26 words
An electrode tip according to claim 36 wherein the generally loop shaped working portion of the electrode is generally circular, semicircular, parabolic or rectangular in shape.
Claim 47
Dependent Claim
29 words
An electrode tip according to claim 36 wherein the electrode is formed from the group of materials consisting of stainless steel, tungsten, a nickel and chromium alloy and titanium.
Claim 48
Dependent Claim
21 words
An electrode tip according to claim 36 wherein the area of the rectangular cross-section is generally uniform throughout the working portion.
Claim 49
Dependent Claim
17 words
An electrode tip according to claim 36 wherein the electrode material is continuous through the working portion.
Claim 50
Dependent Claim
74 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip directly connected to, and supported by, the handle, the electrode tip including an electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the working portion being circumferentially unattached to any surrounding structure, wherein the electrode has a cross-sectional thickness of about 0.13 mm to about 0.38 mm.
Claim 51
Dependent Claim
74 words
An electrosurgical instrument comprising: (a) a handle having a proximal end and a distal end; and (b) an electrode tip directly connected to, and supported by, the handle, the electrode tip including an electrode having a working portion that is generally loop shaped and has sharp edges in cross-section, the working portion being circumferentially unattached to any surrounding structure, wherein the electrode has a cross-sectional thickness of about 0.13 mm to about 0.38 mm.
Claim 52
Dependent Claim
15 words
An electrosurgical instrument according to claim 42 wherein the electrode is generally rectangular in cross-section.
Claim 53
Dependent Claim
17 words
An electrosurgical instrument according to claim 42 wherein the electrode material is continuous through the working portion.
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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) | 2001-03-30 | 2001-09-29 | 2002-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-30 | 2005-09-29 | 2006-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-30 | 2009-09-29 | 2010-03-31 | $7700.00 | Window Closed / Lapsed |