US5599346A
Expired / Lapsed
US
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RF treatment system
Assignee: Angiodynamics Inc
•
Filing: 1994-08-24
•
Granted: 1997-02-04
•
Expires: 2014-08-24
Abstract
Abstract An RF treatment system includes first and second catheters with first and second needle electrodes positioned at least partially in lumens of the first and second catheters. Each electrode is surround by a insulator sleeve which is slideable along the electrode and defines an ablation surface. An RF power source is coupled to the first and second needle electrodes. The electrodes provide bipolar RF ablation between the two, defining an ablation volume. A deflectable introducer has a laterally deflectable distal end and an ablation volume temperature sensor positioned at the distal end. The deflectable introducer is advanced in and out of the electrodes distal ends to measure a temperature of tissue in the ablation volume. The treatment system can include more than two electrodes, such as two pairs of electrodes. Further, the system can include a needle electrode extension with a laterally deflectable distal end. The needle electrode extension is positioned in at least one of the distal ends of one of the needle electrodes. It is advanced in and out of the needle electrode distal end to provide monopolar ablation. Additionally, the RF treatment system provides for the introduction of an infusion media, including but not limited to a chemotherapeutic agent, through distribution ports in the needle electrodes, or through one or more infusion devices that can house the needle electrodes and their respective catheters.
Inventors
- 👤 Stuart D. Edwards
- 👤 James Baker
- 👤 Bruno Strul
- 👤 Ronald G. Lax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:49
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1482; A61B18/1477; A61B18/18; A61B18/1815; A61N; A61N5/00; A61N5/02; A61N5/04; A61N5/045; A61B18/1206; A61B18/1402; A61B18/1492; A61B17/00; A61B2017/00017; A61B2017/00022; A61B2017/00026; A61B2017/00084; A61B2018/00005; A61B2018/00011; A61B2018/00053; A61B2018/00184; A61B2018/00196; A61B2018/00315; A61B2018/00452; A61B2018/00476; A61B2018/00571; A61B2018/00577; A61B2018/00636; A61B2018/00642; A61B2018/00666; A61B2018/00678; A61B2018/00696; A61B2018/00702; A61B2018/00708; A61B2018/00726; A61B2018/00761; A61B2018/00773; A61B2018/00779; A61B2018/00791; A61B2018/00821; A61B2018/00827; A61B2018/00875; A61B2018/00892; A61B2018/124; A61B2018/1246; A61B2018/1253; A61B2018/126; A61B2018/1405; A61B2018/1425; A61B2018/1435; A61B18/16; A61B2018/162; A61B2018/1861; A61B2218/00; A61B2218/001; A61B2218/002; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
250 words
An RF treatment system, comprising: a first catheter including a first catheter lumen and a first catheter distal end; a first needle electrode including a first needle electrode lumen and a first needle electrode distal end, the first needle electrode being at least partially positioned in the first catheter lumen; a first insulator sleeve positioned in a slideable surrounding relationship to the first needle electrode to define a first needle ablation surface; a second catheter including a second catheter lumen and a second catheter distal end; a second needle electrode including a second needle electrode lumen and a second needle electrode distal end, the second needle electrode being at least partially positioned in the second catheter lumen; a second insulator sleeve positioned in a slideable surrounding relationship to the second electrode to define a second needle ablation surface; an RF power source connected to the first and second needle electrodes, the first and second needle electrodes providing bipolar RF ablation between the two needles in an ablation volume; a deflectable introducer with a laterally deflectable distal end and an ablation volume temperature sensor positioned at the deflectable introducer distal end, the deflectable introducer distal end being advanced in and out of one of the distal end of the first or second needle electrodes to measure a temperature of tissue in the ablation volume; and an apparatus connected to the introducer for advancing the introducer in and out of one of the distal end of the first or second needle electrodes.
Claim 2
Dependent Claim
250 words
An RF treatment system, comprising: a first catheter including a first catheter lumen and a first catheter distal end; a first needle electrode including a first needle electrode lumen and a first needle electrode distal end, the first needle electrode being at least partially positioned in the first catheter lumen; a first insulator sleeve positioned in a slideable surrounding relationship to the first needle electrode to define a first needle ablation surface; a second catheter including a second catheter lumen and a second catheter distal end; a second needle electrode including a second needle electrode lumen and a second needle electrode distal end, the second needle electrode being at least partially positioned in the second catheter lumen; a second insulator sleeve positioned in a slideable surrounding relationship to the second electrode to define a second needle ablation surface; an RF power source connected to the first and second needle electrodes, the first and second needle electrodes providing bipolar RF ablation between the two needles in an ablation volume; a deflectable introducer with a laterally deflectable distal end and an ablation volume temperature sensor positioned at the deflectable introducer distal end, the deflectable introducer distal end being advanced in and out of one of the distal end of the first or second needle electrodes to measure a temperature of tissue in the ablation volume; and an apparatus connected to the introducer for advancing the introducer in and out of one of the distal end of the first or second needle electrodes.
Claim 3
Dependent Claim
74 words
The RF ablation system of claim 1, further comprising: a removeable first introducer positioned in the lumen of the first needle electrode including a first introducer distal end and a first introducer sensor positioned on a surface of the first introducer; and a removeable second introducer positioned in the lumen of the second needle electrode including a second introducer distal end and a second introducer sensor positioned on a surface of the second introducer.
Claim 4
Dependent Claim
18 words
The RF treatment system of claim 2, further comprising: a return electrode coupled to the RF power source.
Claim 5
Dependent Claim
38 words
The RF treatment system of claim 3, further comprising: a first insulator sleeve sensor positioned on a surface of the first insulator sleeve; and a second insulator sleeve sensor positioned on a surface of the second insulator sleeve.
Claim 6
Dependent Claim
57 words
The RF treatment system of claim 4, further comprising: resources connected with the first introducer sensor, the second introducer sensor, the first insulator sleeve sensor, the second insulator sleeve sensor, the return electrode and the RF power source to maintain a selected power at the first and second needle electrodes independent of changes in current of voltage.
Claim 7
Dependent Claim
47 words
The RF treatment system of claim 3, further comprising: resources connected with the first introducer sensor, the second introducer sensor, the return electrode and the RF power source to maintain a selected power at the first and second needle electrodes independent of changes in current or voltage.
Claim 8
Dependent Claim
36 words
The RF treatment system of claim 1, further comprising: a first infusion device with a first infusion device lumen and distal end, the first catheter being partially disposed in the first infusion device and removeable therefrom.
Claim 9
Dependent Claim
36 words
The RF treatment system of claim 7, further comprising: a second infusion device with a second infusion device lumen and distal end, the second catheter being partially disposed in the second infusion device and removeable therefrom.
Claim 10
Dependent Claim
18 words
The RF treatment system of claim 1, wherein the first and second needle electrode distal ends are sharpened.
Claim 11
Dependent Claim
21 words
The RF treatment system of claim 1, wherein the first and second needle electrodes are hollow and include fluid distribution ports.
Claim 12
Dependent Claim
257 words
An RF treatment system, comprising: a first catheter including a first catheter lumen and a first catheter distal end; a first needle electrode including a first needle electrode lumen and a first needle electrode distal end, the first needle electrode being at least partially positioned in the first catheter lumen; a first insulator sleeve positioned in a slideable surrounding relationship to the first needle electrode to define a first needle ablation surface; a second catheter including a second catheter lumen and a second catheter distal end; a second needle electrode including a second needle electrode lumen and a second needle electrode distal end, the second needle electrode being at least partially positioned in the second catheter lumen; a second insulator sleeve positioned in a slideable surrounding relationship to the second electrode to define a second needle ablation surface; an RF power source coupled to the first and second needle electrodes and a return electrode, the first and second needle electrodes providing bipolar RF ablation between the two needles in an ablation volume; a first needle electrode extension with a laterally deflectable distal end, the first needle electrode extension being positioned at the distal end of the first needle electrode, the first needle electrode extension being coupled to the RF power source and advanced in and out of the distal end of the first needle electrode to provide monopolar ablation; and an apparatus connected to the first needle electrode for advancing the first needle electrode extension in and out of the distal end of the first needle electrode.
Claim 13
Dependent Claim
257 words
An RF treatment system, comprising: a first catheter including a first catheter lumen and a first catheter distal end; a first needle electrode including a first needle electrode lumen and a first needle electrode distal end, the first needle electrode being at least partially positioned in the first catheter lumen; a first insulator sleeve positioned in a slideable surrounding relationship to the first needle electrode to define a first needle ablation surface; a second catheter including a second catheter lumen and a second catheter distal end; a second needle electrode including a second needle electrode lumen and a second needle electrode distal end, the second needle electrode being at least partially positioned in the second catheter lumen; a second insulator sleeve positioned in a slideable surrounding relationship to the second electrode to define a second needle ablation surface; an RF power source coupled to the first and second needle electrodes and a return electrode, the first and second needle electrodes providing bipolar RF ablation between the two needles in an ablation volume; a first needle electrode extension with a laterally deflectable distal end, the first needle electrode extension being positioned at the distal end of the first needle electrode, the first needle electrode extension being coupled to the RF power source and advanced in and out of the distal end of the first needle electrode to provide monopolar ablation; and an apparatus connected to the first needle electrode for advancing the first needle electrode extension in and out of the distal end of the first needle electrode.
Claim 14
Dependent Claim
102 words
The RF treatment system of claim 11, further comprising: a second needle electrode extension with a laterally deflectable distal end, the second needle electrode extension being positioned at the distal end of the second needle electrode, the second needle electrode extension being coupled to the RF power source and advanced in and out of the distal end of the second needle electrode to provide monopolar ablation, wherein the apparatus for advancing the first needle electrode extension in and out of the distal end of the first needle electrode also advances the second needle electrode in and out of the second needle electrode.
Claim 15
Dependent Claim
19 words
The RF treatment system of claim 12, wherein the second needle electrode extension is made of a memory metal.
Claim 16
Dependent Claim
17 words
The RF treatment system of claim 13, wherein the second needle electrode extension is made of nitinol.
Claim 17
Dependent Claim
22 words
The RF treatment system of claim 12, wherein the second needle electrode extension includes a thermal sensor positioned at its distal end.
Claim 18
Dependent Claim
25 words
The RF treatment system of claim 12, further comprising: a return electrode coupled to the RF power source and the first and second needle electrodes.
Claim 19
Dependent Claim
57 words
The RF treatment system of claim 16, further comprising: resources connected with the first introducer sensor, the second introducer sensor, the first insulator sleeve sensor, the second insulator sleeve sensor, the return electrode and the RF power source to maintain a selected power at the first and second needle electrodes independent of changes in current of voltage.
Claim 20
Dependent Claim
36 words
The RF treatment system of claim 17, further comprising: a second infusion device with a second infusion device lumen and distal end, the second catheter being partially disposed in the second infusion device and removeable therefrom.
Claim 21
Dependent Claim
74 words
The RF ablation system of claim 11, further comprising: a removeable first introducer positioned in the lumen of the first needle electrode including a first introducer distal end and a first introducer sensor positioned on a surface of the first introducer; and a removeable second introducer positioned in the lumen of the second needle electrode including a second introducer distal end and a second introducer sensor positioned on a surface of the second introducer.
Claim 22
Dependent Claim
38 words
The RF treatment system of claim 19, further comprising: a first insulator sleeve sensor positioned on a surface of the first insulator sleeve; and a second insulator sleeve sensor positioned on a surface of the second insulator sleeve.
Claim 23
Dependent Claim
47 words
The RF treatment system of claim 19, further comprising: resources connected with the first introducer sensor, the second introducer sensor, the return electrode and the RF power source to maintain a selected power at the first and second needle electrodes independent of changes in current or voltage.
Claim 24
Dependent Claim
36 words
The RF treatment system of claim 11, further comprising: a first infusion device with a first infusion device lumen and distal end, the first catheter being partially disposed in the first infusion device and removeable therefrom.
Claim 25
Dependent Claim
18 words
The RF treatment system of claim 11, wherein the first and second needle electrode distal ends are sharpened.
Claim 26
Dependent Claim
19 words
The RF treatment system of claim 11, wherein the first needle electrode extension is made of a memory metal.
Claim 27
Dependent Claim
17 words
The RF treatment system of claim 24, wherein the first needle electrode extension is made of nitinol.
Claim 28
Dependent Claim
22 words
The RF treatment system of claim 11, wherein the first needle electrode extension includes a thermal sensor positioned at its distal end.
Claim 29
Dependent Claim
304 words
An RF treatment system, comprising: a first catheter including a first catheter lumen and a first catheter distal end; a first needle electrode including a first needle electrode lumen and a first needle electrode distal end, the first needle electrode being at least partially positioned in the first catheter lumen; a first insulator sleeve positioned in a slideable surrounding relationship to the first needle electrode to define a first needle ablation surface; a second catheter including a second catheter lumen and a second catheter distal end; a second needle electrode including a second needle electrode lumen and a second needle electrode distal end, the second needle electrode being at least partially positioned in the second catheter lumen; a second insulator sleeve positioned in a slideable surrounding relationship to the second electrode to define a second needle ablation surface; an RF power source coupled to the first and second needle electrodes, the first and second needle electrodes providing bipolar RF ablation between the two needles in an ablation volume; a first needle electrode extension with a laterally deflectable distal end, the first needle electrode extension being positioned at the distal end of the first needle electrode, the first needle electrode extension being coupled to the RF power source and advanced out of the distal end of the first needle electrode to provide monopolar ablation; a deflectable introducer with a laterally deflectable distal end and an ablation volume temperature sensor positioned at the deflectable introducer distal end, the deflectable introducer distal end being advanced out of one of the distal end of the first or second needle electrodes to measure a temperature of tissue in the ablation volume; and an apparatus connected to the introducer for advancing the deflectable introducer distal end out of one of the distal end of the first or second needle electrodes.
Claim 30
Dependent Claim
304 words
An RF treatment system, comprising: a first catheter including a first catheter lumen and a first catheter distal end; a first needle electrode including a first needle electrode lumen and a first needle electrode distal end, the first needle electrode being at least partially positioned in the first catheter lumen; a first insulator sleeve positioned in a slideable surrounding relationship to the first needle electrode to define a first needle ablation surface; a second catheter including a second catheter lumen and a second catheter distal end; a second needle electrode including a second needle electrode lumen and a second needle electrode distal end, the second needle electrode being at least partially positioned in the second catheter lumen; a second insulator sleeve positioned in a slideable surrounding relationship to the second electrode to define a second needle ablation surface; an RF power source coupled to the first and second needle electrodes, the first and second needle electrodes providing bipolar RF ablation between the two needles in an ablation volume; a first needle electrode extension with a laterally deflectable distal end, the first needle electrode extension being positioned at the distal end of the first needle electrode, the first needle electrode extension being coupled to the RF power source and advanced out of the distal end of the first needle electrode to provide monopolar ablation; a deflectable introducer with a laterally deflectable distal end and an ablation volume temperature sensor positioned at the deflectable introducer distal end, the deflectable introducer distal end being advanced out of one of the distal end of the first or second needle electrodes to measure a temperature of tissue in the ablation volume; and an apparatus connected to the introducer for advancing the deflectable introducer distal end out of one of the distal end of the first or second needle electrodes.
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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) | 2000-02-04 | 2000-08-05 | 2001-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-04 | 2004-08-05 | 2005-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-04 | 2008-08-05 | 2009-02-04 | $7700.00 | Window Closed / Lapsed |