US5735847A
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US
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Multiple antenna ablation apparatus and method with cooling element
Assignee: Angiodynamics Inc
•
Filing: 1995-12-19
•
Granted: 1998-04-07
•
Expires: 2015-12-19
Abstract
Abstract An ablation apparatus includes a multiple antenna device coupled to an electromagnetic energy source that produces an electromagnetic energy ablation output. The multiple antenna device includes a primary antenna with a lumen and a longitudinal axis, and a secondary antenna deployable from the lumen in a lateral direction relative to the longitudinal axis. At least a distal end of each secondary antenna is structurally less rigid than the primary antenna, and the primary antenna is sufficiently rigid to be introduced through tissue. At least one cable coupling the multiple antenna device to the energy source. A cooling element is coupled to the primary antenna. A variety of energy sources can be used including RF, microwave and laser.
Inventors
- 👤 Edward J. Gough
- 👤 Alan A. Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:47
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; A61M3/00; A61M3/02; A61M3/0279; A61N5/00; A61N5/02; A61N5/04
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
113 words
An ablation apparatus, comprising: a multiple antenna device configured to be coupled to an energy source, the multiple antenna device including a primary antenna with a lumen and a longitudinal axis and a distal end sufficiently sharp to pierce tissue, and a secondary antenna at least partially positioned in the secondary antenna including a distal portion configured to be deployed from the lumen in a lateral direction relative to the longitudinal axis, wherein at least a part of a deployed secondary antenna distal portion has at least one radius of curvature; at least one cable configured to be coupled to the multiple antenna device; and a cooling element coupled to the primary antenna.
Claim 2
Dependent Claim
113 words
An ablation apparatus, comprising: a multiple antenna device configured to be coupled to an energy source, the multiple antenna device including a primary antenna with a lumen and a longitudinal axis and a distal end sufficiently sharp to pierce tissue, and a secondary antenna at least partially positioned in the secondary antenna including a distal portion configured to be deployed from the lumen in a lateral direction relative to the longitudinal axis, wherein at least a part of a deployed secondary antenna distal portion has at least one radius of curvature; at least one cable configured to be coupled to the multiple antenna device; and a cooling element coupled to the primary antenna.
Claim 3
Dependent Claim
34 words
The apparatus of claim 1, wherein the primary antenna has an energy delivery surface with a length that is at least 20% of a length of an energy delivery surface of the secondary antenna.
Claim 4
Dependent Claim
34 words
The apparatus of claim 1, wherein the primary antenna has an energy delivery surface with a length that is at least one-third of a length of an energy delivery surface of the secondary antenna.
Claim 5
Dependent Claim
34 words
The apparatus of claim 1, wherein the primary antenna has an energy delivery surface with a length that is at least one-half of a length of an energy delivery surface of the secondary antenna.
Claim 6
Dependent Claim
40 words
The apparatus of claim 1, wherein two secondary antennas are provided and laterally deployed from the primary antenna, each of the primary and secondary antennas having an energy delivery surface to create an ablation volume between the energy delivery surfaces.
Claim 7
Dependent Claim
40 words
The apparatus of claim 1, wherein three secondary antennas are provided and laterally deployed from the primary antenna, each of the primary and secondary antennas having an energy delivery surface to create an ablation volume between the energy delivery surfaces.
Claim 8
Dependent Claim
27 words
The apparatus of claim 1, further comprising: an insulation sleeve positioned in a surrounding relationship around at least a portion of an exterior of the primary antenna.
Claim 9
Dependent Claim
19 words
The apparatus of claim 7, wherein the insulation sleeve is adjustably moveable along an exterior of the primary antenna.
Claim 10
Dependent Claim
27 words
The apparatus of claim 1, further comprising: an insulation sleeve positioned in a surrounding relationship around at least a portion of an exterior of the secondary antenna.
Claim 11
Dependent Claim
19 words
The apparatus of claim 9, wherein the insulation sleeve is adjustably moveable along an exterior of the secondary antenna.
Claim 12
Dependent Claim
22 words
The apparatus of claim 1, further including a ground pad electrode and the primary and secondary antennas operate in a monopolar mode.
Claim 13
Dependent Claim
14 words
The apparatus of claim 1, wherein the primary and secondary antennas are RF antennas.
Claim 14
Dependent Claim
25 words
The apparatus of claim 1, wherein the cooling element cools the primary antenna substantially only where the primary antenna has an ablation energy delivery surface.
Claim 15
Dependent Claim
31 words
The apparatus of claim 1, 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 16
Dependent Claim
14 words
The apparatus of claim 14, wherein the cooling medium is recirculated through the channel.
Claim 17
Dependent Claim
15 words
The apparatus of claim 1, wherein the distal end of the primary antenna is open.
Claim 18
Dependent Claim
15 words
The apparatus of claim 1, wherein the distal end of the primary antenna is closed.
Claim 19
Dependent Claim
18 words
The apparatus of claim 1, wherein the cooling element is positioned in an interior of the primary antenna.
Claim 20
Dependent Claim
19 words
The apparatus of claim 1, wherein the cooling element is positioned at an exterior surface of the primary antenna.
Claim 21
Dependent Claim
18 words
The apparatus of claim 1, wherein the cooling element is positioned within a wall defining the primary antenna.
Claim 22
Independent Claim
179 words
A method for creating an ablation volume in a selected tissue mass, comprising: providing an ablation device with a primary antenna, one or more deployable secondary antennas at least partially housed in a primary antenna lumen formed in the primary antenna, a cooling element coupled to the primary antenna and an energy source coupled to the antennas to deliver electromagnetic energy, the primary antenna including a distal end sufficiently sharp to pierce tissue and at least a portion of a deployed distal portion of the secondary antennas is configured to have at least one radius of curvature; inserting the primary antenna into the selected tissue mass; advancing at least one secondary antenna into the selected tissue mass from the primary antenna lumen in a lateral direction relative to a longitudinal axis of the primary antenna; cooling an energy delivery service of the primary antenna; delivering electromagnetic energy from one of the primary antenna energy delivery surface, a secondary antenna energy delivery surface or both to the selected tissue mass; and creating an ablation volume in the selected tissue mass.
Claim 23
Independent Claim
179 words
A method for creating an ablation volume in a selected tissue mass, comprising: providing an ablation device with a primary antenna, one or more deployable secondary antennas at least partially housed in a primary antenna lumen formed in the primary antenna, a cooling element coupled to the primary antenna and an energy source coupled to the antennas to deliver electromagnetic energy, the primary antenna including a distal end sufficiently sharp to pierce tissue and at least a portion of a deployed distal portion of the secondary antennas is configured to have at least one radius of curvature; inserting the primary antenna into the selected tissue mass; advancing at least one secondary antenna into the selected tissue mass from the primary antenna lumen in a lateral direction relative to a longitudinal axis of the primary antenna; cooling an energy delivery service of the primary antenna; delivering electromagnetic energy from one of the primary antenna energy delivery surface, a secondary antenna energy delivery surface or both to the selected tissue mass; and creating an ablation volume in the selected tissue mass.
Claim 24
Dependent Claim
42 words
The method of claim 21, wherein two secondary antennas, each having an energy delivery surface, are advanced from the primary antenna, and an ablation volume is created between the two secondary antennas energy delivery surfaces and the primary electrode energy delivery surface.
Claim 25
Dependent Claim
21 words
The method of claim 22, wherein the two secondary antennas are advanced out of a distal end of the primary antenna.
Claim 26
Dependent Claim
21 words
The method of claim 22, wherein the two secondary antennas are advanced out of separate ports formed in the primary antenna.
Claim 27
Dependent Claim
20 words
The method of claim 22, wherein the two secondary antennas are advanced from the primary antenna and define a plane.
Claim 28
Dependent Claim
15 words
The method of claim 21, wherein three secondary antennas are advanced from the primary antenna.
Claim 29
Dependent Claim
35 words
The method of claim 26, wherein each of the three secondary antennas and the primary antenna has an energy delivery surface, and an ablation volume is formed between the energy delivery surfaces of the antennas.
Claim 30
Dependent Claim
32 words
The method of claim 21, wherein the primary electrode has an energy delivery surface that is at least equal to 20% or more of an energy delivery surface of the secondary antenna.
Claim 31
Dependent Claim
32 words
The method of claim 21, wherein the primary electrode has an energy delivery surface that is at least equal to one-third or more of an energy delivery surface of the secondary antenna.
Claim 32
Dependent Claim
32 words
The method of claim 21, wherein the primary electrode has an energy delivery surface that is at least equal to one-half or more of an energy delivery surface of the secondary antenna.
Claim 33
Dependent Claim
17 words
The method of claim 21, wherein the primary and secondary antennas are operated in a mono-polar mode.
Claim 34
Dependent Claim
15 words
The method of claim 21, wherein the ablation device is operated in a bipolar mode.
Claim 35
Dependent Claim
15 words
The method of claim 21, wherein the ablation device is operated in a bipolar mode.
Claim 36
Dependent Claim
36 words
The method of claim 21, wherein an energy delivery surface of the primary antenna is cooled sufficiently to prevent the energy delivery surface from impeding out while electromagnetic energy is delivered to the selected tissue mass.
Claim 37
Dependent Claim
48 words
The method of claim 21, wherein an energy delivery surface of the primary antenna is cooled sufficiently and the selected tissue mass between the energy delivery surface of the primary antenna and an energy delivery surface of the secondary antenna is ablated without the primary antenna impeding out.
Claim 38
Dependent Claim
118 words
An ablation apparatus, comprising: an introducer including a lumen, a distal portion and a distal end sufficiently sharp to penetrate tissue, the introducer having a distal portion and an energy delivery device coupled to an energy source; a temperature monitoring device at least partially positioned in the introducer as the introducer is advanced through the tissue, the temperature monitoring device including the distal portion at least partially deployable from the introducer at a selected tissue site, wherein at least part of the temperature monitoring device distal portion has at least one radius of curvature when deployed from the introducer; a cooling element coupled to the introducer; and a cable coupling the energy source to the energy delivery device.
Claim 39
Dependent Claim
118 words
An ablation apparatus, comprising: an introducer including a lumen, a distal portion and a distal end sufficiently sharp to penetrate tissue, the introducer having a distal portion and an energy delivery device coupled to an energy source; a temperature monitoring device at least partially positioned in the introducer as the introducer is advanced through the tissue, the temperature monitoring device including the distal portion at least partially deployable from the introducer at a selected tissue site, wherein at least part of the temperature monitoring device distal portion has at least one radius of curvature when deployed from the introducer; a cooling element coupled to the introducer; and a cable coupling the energy source to the energy delivery device.
Claim 40
Dependent Claim
58 words
The apparatus of claim 36, further comprising: a sensor coupled to the temperature monitoring device; and a feedback control system coupled to the energy source and the sensor, wherein the feedback control system is responsive to a detected characteristic from the sensor and provides a delivery of energy output from the energy source to the energy delivery device.
Claim 41
Dependent Claim
19 words
The apparatus of claim 37, wherein the sensor is positioned at the distal portion of the temperature monitoring device.
Claim 42
Dependent Claim
23 words
The apparatus of claim 36, wherein the energy delivery device is an RF electrode and the energy source is an RF energy source.
Claim 43
Dependent Claim
58 words
The apparatus of claim 39, further comprising: a sensor coupled to the RF electrode; and a feedback control system coupled to the RF energy source and the sensor, wherein the feedback control system is responsive to a detected characteristic from the sensor and provides a delivery of energy output from the RF energy source to the RF electrode.
Claim 44
Dependent Claim
12 words
The apparatus of claim 40, wherein the sensor is a thermal sensor.
Claim 45
Dependent Claim
12 words
The apparatus of claim 40, wherein the sensor is an impedance sensor.
Claim 46
Dependent Claim
76 words
The apparatus of claim 39, further including a second RF electrode at least partially positioned in the introducer as the introducer is advanced through tissue, the second RF electrode including a distal portion configured to be coupled to the RF energy source and deployable from the introducer at a selected tissue site, wherein at least a part of the second RF electrode distal portion has at least one radius of curvature when deployed from the introducer.
Claim 47
Dependent Claim
23 words
The apparatus of claim 36, wherein the energy delivery device is a laser energy delivery device and the energy source is a laser.
Claim 48
Dependent Claim
58 words
The apparatus of claim 44, further comprising: a sensor coupled to the laser energy delivery device; and a feedback control system coupled to the laser and the sensor, wherein the feedback control system is responsive to a detected characteristic from the sensor and provides a delivery of energy output from the laser to the laser energy delivery device.
Claim 49
Dependent Claim
12 words
The apparatus of claim 45, wherein the sensor is a thermal sensor.
Claim 50
Dependent Claim
80 words
The apparatus of claim 44, further including a second laser energy delivery device at least partially positioned in the introducer as the introducer is advanced through tissue, the second laser energy delivery device including a distal portion configured to be coupled to the laser and deployable from the introducer at a selected tissue site, wherein at least a part of the second laser energy delivery device distal portion has at least one radius of curvature when deployed from the introducer.
Claim 51
Dependent Claim
22 words
The apparatus of claim 36, wherein the energy delivery device is a microwave antenna and the energy source is a microwave source.
Claim 52
Dependent Claim
56 words
The apparatus of claim 48, further comprising: a sensor coupled to the microwave antenna; and a feedback control system coupled to the microwave source and the sensor, wherein the feedback control system is responsive to a detected characteristic from the sensor and provides a delivery of energy output from the microwave source to the microwave antenna.
Claim 53
Dependent Claim
12 words
The apparatus of claim 49, wherein the sensor is a thermal sensor.
Claim 54
Dependent Claim
75 words
The apparatus of claim 48, further including a second microwave antenna at least partially positioned in the introducer as the introducer is advanced through tissue, the second microwave antenna including a distal portion configured to be coupled to the microwave source and deployable from the introducer at a selected tissue site, wherein at least a part of the second microwave antenna distal portion has at least one radius of curvature when deployed from the introducer.
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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) | 2001-04-06 | 2001-10-06 | 2002-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-06 | 2005-10-06 | 2006-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-06 | 2009-10-06 | 2010-04-07 | $7700.00 | Window Closed / Lapsed |