US5672174A
Expired / Lapsed
US
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Multiple antenna ablation apparatus and method
Assignee: Angiodynamics Inc
•
Filing: 1996-01-16
•
Granted: 1997-09-30
•
Expires: 2016-01-16
Abstract
Abstract An ablation treatment apparatus has a multiple antenna device. The multiple antenna device includes a primary antenna with a lumen, a longitudinal axis and an ablative surface area of length L 1 . The multiple antenna device also includes a secondary antenna that is positioned in the primary antenna as the primary antenna is introduced through tissue. A secondary antenna distal end is deployed at a selected tissue site from the primary antenna lumen in a lateral direction relative to the longitudinal axis. A sensor is at least partially positioned at an exterior of the secondary antenna distal end at a distance L 2 from the primary antenna along the secondary antenna distal end. L 2 is at least equal to 1/3 L 1 . An energy source is coupled to the primary antenna.
Inventors
- 👤 Edward J. Gough
- 👤 Alan A. Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:49
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1477; A61B18/1482; A61B18/18; A61B18/1815; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/06; A61N1/40; A61N1/403; A61B18/1206; A61B18/1402; A61B18/1485; A61B18/1492; A61B17/00; A61B2017/00017; A61B2017/00022; A61B2017/00084; A61B2017/00101; A61B2018/00005; A61B2018/00011; A61B2018/00023; A61B2018/00053; A61B2018/00184; A61B2018/00196; A61B2018/00273; A61B2018/00315; A61B2018/00452; A61B2018/00476; A61B2018/00571; A61B2018/00577; A61B2018/00636; A61B2018/00666; A61B2018/00678; A61B2018/00696; A61B2018/00702; A61B2018/00708; A61B2018/00726; A61B2018/00744; A61B2018/00761; A61B2018/00773; A61B2018/00779; A61B2018/00791; A61B2018/00797; A61B2018/00827; A61B2018/00875; A61B2018/00892; A61B2018/124; A61B2018/1246; A61B2018/1253; A61B2018/126; A61B2018/1405; A61B2018/1425; A61B2018/143; A61B2018/1432; A61B2018/1435; A61B2018/1472; A61B18/16; A61B2018/162; A61B2218/00; A61B2218/001; A61B2218/002; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007; A61N5/00; A61N5/02; A61N5/04
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
120 words
An ablation treatment apparatus, comprising: a multiple antenna device including a primary antenna with a lumen, a longitudinal axis, a distal end sufficiently sharp to pierce tissue and an energy delivery surface with a length L 1 , and a secondary antenna at least partially positioned in the primary antenna as the primary antenna is introduced through tissue and a secondary antenna distal portion deployable at a selected tissue site with an energy delivery surface of length L 2 that is at least equal to 1/3 L 1 , wherein at least a portion of the secondary antenna has at least one radius of curvature when introduced from the primary antenna; and a cable coupled to the multiple antenna device.
Claim 2
Dependent Claim
120 words
An ablation treatment apparatus, comprising: a multiple antenna device including a primary antenna with a lumen, a longitudinal axis, a distal end sufficiently sharp to pierce tissue and an energy delivery surface with a length L 1 , and a secondary antenna at least partially positioned in the primary antenna as the primary antenna is introduced through tissue and a secondary antenna distal portion deployable at a selected tissue site with an energy delivery surface of length L 2 that is at least equal to 1/3 L 1 , wherein at least a portion of the secondary antenna has at least one radius of curvature when introduced from the primary antenna; and a cable coupled to the multiple antenna device.
Claim 3
Dependent Claim
17 words
The apparatus of claim 1, wherein L 2 is at least equal to 1/2 L 1 .
Claim 4
Dependent Claim
16 words
The apparatus of claim 1, wherein L 2 is at least equal to L 1 .
Claim 5
Dependent Claim
23 words
The apparatus of claim 1, wherein the primary antenna and the secondary antenna are each RF electrodes coupled to an RF energy source.
Claim 6
Dependent Claim
17 words
The apparatus of claim 4, wherein the multiple antenna device is configured to operate a monopolar mode.
Claim 7
Dependent Claim
18 words
The apparatus of claim 4, wherein the multiple antenna device is configured to operate in a bipolar mode.
Claim 8
Dependent Claim
24 words
The apparatus of claim 4, further comprising: a second secondary antenna and two secondary electrodes are provided and laterally deployed from the primary antenna.
Claim 9
Dependent Claim
146 words
An ablation treatment apparatus, comprising: a multiple antenna device including a primary antenna with a lumen, a longitudinal axis, a distal end sufficiently Sharp to pierce tissue and an energy delivery surface with a length L 1 , and a secondary antenna at least partially positioned in the primary antenna as the primary antenna is introduced through tissue and a secondary antenna distal portion deployable at a selected tissue site from the primary antenna lumen in a lateral direction relative to the longitudinal axis, the secondary antenna including an energy delivery surface of length L 2 , wherein at least a portion of the energy delivery surface of length L 2 has at least one radius of curvature when introduced from the primary antenna and L 2 is at least equal to 1/3 L 1 ; and a sensor positioned at the secondary antenna distal portion.
Claim 10
Dependent Claim
146 words
An ablation treatment apparatus, comprising: a multiple antenna device including a primary antenna with a lumen, a longitudinal axis, a distal end sufficiently Sharp to pierce tissue and an energy delivery surface with a length L 1 , and a secondary antenna at least partially positioned in the primary antenna as the primary antenna is introduced through tissue and a secondary antenna distal portion deployable at a selected tissue site from the primary antenna lumen in a lateral direction relative to the longitudinal axis, the secondary antenna including an energy delivery surface of length L 2 , wherein at least a portion of the energy delivery surface of length L 2 has at least one radius of curvature when introduced from the primary antenna and L 2 is at least equal to 1/3 L 1 ; and a sensor positioned at the secondary antenna distal portion.
Claim 11
Dependent Claim
17 words
The apparatus of claim 8, wherein L 2 is at least equal to 1/2 L 1 .
Claim 12
Dependent Claim
16 words
The apparatus of claim 8, wherein L 2 is at least equal to L 1 .
Claim 13
Dependent Claim
15 words
The apparatus of claim 8, further comprising: a sensor monitoring device coupled to the sensor.
Claim 14
Dependent Claim
15 words
The apparatus of claim 11, wherein the sensor monitoring device is a temperature monitoring device.
Claim 15
Dependent Claim
49 words
The apparatus of claim 8, further comprising: a feedback control device coupled to an energy source and the sensor, wherein the feedback control device is responsive to a detected characteristic from the sensor and provides a delivery of electromagnetic energy output from the energy source to the primary antenna.
Claim 16
Dependent Claim
21 words
The apparatus of claim 8, wherein the secondary antenna is an inactive electrode and the primary antenna is an active electrode.
Claim 17
Dependent Claim
19 words
The apparatus of claim 8, wherein the secondary antenna distal portion is structurally less rigid than the primary antenna.
Claim 18
Dependent Claim
15 words
The apparatus of claim 8, wherein the apparatus is switchable between bipolar and monopolar operation.
Claim 19
Dependent Claim
32 words
The apparatus of claim 8, wherein the primary antenna has an ablation surface with a length that is at least one-half of a length of an ablation surface of the secondary antenna.
Claim 20
Dependent Claim
38 words
The apparatus of claim 8, wherein two secondary antennas are provided and laterally deployed from the primary antenna, each of the primary and secondary antennas having an ablation surface to create an ablation volume between the ablation surfaces.
Claim 21
Dependent Claim
38 words
The apparatus of claim 8 wherein three secondary antennas are provided and laterally deployed from the primary antenna, each of the primary and secondary antennas having an ablation surface to create an ablation volume between the ablation surfaces.
Claim 22
Dependent Claim
27 words
The apparatus of claim 8, further comprising: an insulation sleeve positioned in a surrounding relationship around at least a portion of an exterior of the primary antenna.
Claim 23
Dependent Claim
19 words
The apparatus of claim 20, wherein the insulation sleeve is adjustably moveable along an exterior of the primary antenna.
Claim 24
Dependent Claim
27 words
The apparatus of claim 8, further comprising: an insulation sleeve positioned in a surrounding relationship around at least a portion of an exterior of the secondary antenna.
Claim 25
Dependent Claim
19 words
The apparatus of claim 22, wherein the insulation sleeve is adjustably moveable along an exterior of the secondary antenna.
Claim 26
Dependent Claim
20 words
The apparatus of claim 8, further including a ground pad electrode with the primary antenna operating in a monopolar mode.
Claim 27
Dependent Claim
13 words
The apparatus of claim 8, wherein the primary antenna is an RF antenna.
Claim 28
Dependent Claim
13 words
The apparatus of claim 8, wherein the primary antenna is a microwave antenna.
Claim 29
Dependent Claim
13 words
The apparatus of claim 8, wherein the secondary antenna is an inactive antenna.
Claim 30
Dependent Claim
23 words
The apparatus of claim 8, wherein the primary antenna is hollow and coupled to an infusion medium source to receive an infusion medium.
Claim 31
Dependent Claim
19 words
The apparatus of claim 8, wherein the secondary antenna distal end is less structurally rigid than the primary antenna.
Claim 32
Dependent Claim
15 words
The apparatus of claim 8, further comprising: a cooling element coupled to the primary antenna.
Claim 33
Dependent Claim
31 words
The apparatus of claim 30, wherein the cooling element comprises: a structure positioned in an interior of the primary antenna including at least one channel configured to receive a cooling medium.
Claim 34
Dependent Claim
14 words
The apparatus of claim 30, wherein the cooling medium is recirculated through the channel.
Claim 35
Dependent Claim
15 words
The apparatus of claim 30, wherein the distal end of the primary antenna is open.
Claim 36
Dependent Claim
30 words
The apparatus of claim 13, wherein the distal end of the primary antenna is closed and the secondary antenna is deployed from a side port formed in the primary antenna.
Claim 37
Dependent Claim
18 words
The apparatus of claim 30, wherein the cooling element is positioned in an interior of the primary antenna.
Claim 38
Independent Claim
146 words
A method for creating an ablation volume in a selected tissue mass, comprising: providing an ablation device with a primary antenna and an energy delivery surface and a primary distal end sufficiently sharp to pierce tissue, and a secondary antenna with a distal portion configured to be deployed from the primary antenna, wherein the distal portion at least partially includes one radius of curvature; inserting the primary antenna into the selected tissue mass with at least a portion of the secondary antenna distal portion positioned in the primary antenna lumen; advancing the secondary antenna distal portion out of the primary antenna lumen and into the selected tissue mass in a lateral direction relative to a longitudinal axis of the primary antenna; delivering electromagnetic energy from the primary antenna energy delivery. surface to the selected tissue mass; and creating an ablation volume in the selected tissue mass.
Claim 39
Independent Claim
146 words
A method for creating an ablation volume in a selected tissue mass, comprising: providing an ablation device with a primary antenna and an energy delivery surface and a primary distal end sufficiently sharp to pierce tissue, and a secondary antenna with a distal portion configured to be deployed from the primary antenna, wherein the distal portion at least partially includes one radius of curvature; inserting the primary antenna into the selected tissue mass with at least a portion of the secondary antenna distal portion positioned in the primary antenna lumen; advancing the secondary antenna distal portion out of the primary antenna lumen and into the selected tissue mass in a lateral direction relative to a longitudinal axis of the primary antenna; delivering electromagnetic energy from the primary antenna energy delivery. surface to the selected tissue mass; and creating an ablation volume in the selected tissue mass.
Claim 40
Dependent Claim
13 words
The method of claim 36, wherein the secondary antenna is a inactive antenna.
Claim 41
Dependent Claim
13 words
The method of claim 36, further comprising: a sensor configured to measure temperature.
Claim 42
Dependent Claim
21 words
The method of claim 38, wherein secondary antenna distal end is advanced out of a distal end of the primary antenna.
Claim 43
Dependent Claim
15 words
The method of claim 36, wherein the ablation device is operated in a monopolar mode.
Claim 44
Dependent Claim
15 words
The method of claim 36, wherein the ablation device is operated in a bipolar mode.
Claim 45
Dependent Claim
16 words
The method of claim 36, wherein the ablation device is switchable between monopolar and bipolar operation.
Claim 46
Dependent Claim
10 words
The method of claim 36, wherein the sensor measures temperature.
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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) | 2000-09-29 | 2001-03-31 | 2001-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-29 | 2005-03-31 | 2005-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-29 | 2009-03-31 | 2009-09-30 | $7700.00 | Window Closed / Lapsed |