EP0628288A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Medical probe
Assignee: Medtronic Vidamed Inc
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Filing: 1994-05-12
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Granted: —
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Expires: 2014-05-12
Abstract
Abstract A medical probe device of this invention comprising a catheter having a control end and a probe end. The probe end includes a stylet guide housing having at least one stylet port and stylet guide means for directing a flexible stylet outward through at least one stylet port and through intervening tissue to targeted tissues. A stylet is positioned in at least one of said stylet guide means, the stylet comprising a non-conductive sleeve having a RF electrode lumen and an optional a fluid supply lumen and a temperature sensor lumen therein. At least one portion of an opposed surface of the electrode lumen and the electrode can be spaced apart to define a liquid supply passageway for delivery of medicament liquid. The RF electrode enclosed within the non-conductive sleeve has a distal length optionally having at least one current focusing groove means thereon and a distal tip shaped to focus current crowding on its terminal end, whereby Rf current passing therefrom into surrounding tissue forms a lesion extending outward from the groove and tip. The focusing groove means can be a plurality of annular focusing grooves or a spiral focusing groove thereon.
Inventors
- 👤 Stuart D. Edwards
- 👤 Ingemar H. Lindquist
- 👤 James Allen Baker, Jr.
- 👤 Hugh R. Sharkey
- 👤 Ronald G. Lax
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/0275; A61B10/06; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1477; A61B18/1485; A61B18/18; A61B18/1815; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/435; A61K31/465; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/06; A61N1/40; A61N1/403; A61N5/00; A61N5/02; A61N5/04; A61N5/045; A61B1/00; A61B1/00163; A61B1/00188; A61B10/0241; A61B18/148; A61B18/20; A61B18/22; A61B18/24; A61B17/00; A61B2017/00017; A61B2017/00022; A61B2017/00084; A61B2017/00092; A61B2017/00106; A61B17/00234; A61B2017/00238; A61B2017/00274; A61B2017/00292; A61B2017/003; A61B2017/00831; A61B2017/00867; A61B17/22; A61B2017/22072; A61B2017/22074; A61B2017/22077; A61B2017/22082; A61B17/24; A61B2017/248; A61B17/28; A61B17/29; A61B2017/2926; A61B2017/2932; A61B2017/2939; A61B17/34; A61B2017/348; A61B2017/3482; A61B2017/3484; A61B2017/3488; A61B2018/00005; A61B2018/00011; A61B2018/00053; A61B2018/00059; A61B2018/00071; A61B2018/00083; A61B2018/00089; A61B2018/00095; A61B2018/00184; A61B2018/00196; A61B2018/00214; A61B2018/0022; A61B2018/00315; A61B2018/00547; A61B2018/00571; A61B2018/00577; A61B2018/00636; A61B2018/00666; A61B2018/00678; A61B2018/00696; A61B2018/00702; A61B2018/00726; A61B2018/00744; A61B2018/0075; A61B2018/00761; A61B2018/00773; A61B2018/00791; A61B2018/00797; A61B2018/00821; A61B2018/00869; A61B2018/00886; A61B2018/0091; A61B2018/00916; A61B2018/0094; A61B2018/00946; A61B2018/00982; A61B18/1206; A61B2018/1246; A61B2018/1253; A61B2018/126; A61B2018/1273; A61B2018/128; A61B2018/1405; A61B2018/1425; A61B2018/2238; A61B90/00; A61B90/08; A61B2090/0814; A61B90/36; A61B90/361; A61B2090/3614; A61B90/37; A61B2090/378; A61B2090/3782; A61B90/39; A61B2090/3925; A61B2217/00; A61B2217/002; A61B2217/005; A61B2217/007; A61M; A61M25/00; A61M25/0067; A61M25/0082; A61M25/0084; A61M2025/0085; A61M2025/0086; A61M2025/0087; A61M2025/0089; A61M2025/009; A61M2025/0096; A61M25/01; A61M2025/018; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/0032; A61M25/0043; A61M25/0045; A61M25/008
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
110 words
A medical probe device comprising a catheter having a control end and a probe end, the probe end including a stylet guide housing having at least one stylet port and stylet guide means for directing a flexible stylet outward through each stylet port and through intervening tissue to targeted tissues, a stylet positioned in at least one of said stylet guide means, the stylet comprising a non-conductive sleeve having an electrode lumen and a second lumen therein, the electrode lumen terminating at a distal port in the distal end of the non-conductive sleeve, a radiofrequency electrode being positioned in said electrode lumen for longitudinal movement therein through the distal port.
Claim 2
Dependent Claim
42 words
A medical probe device of Claim 1 wherein the radiofrequency electrode and at least one portion of an opposed surface of the electrode lumen and the electrode surface are spaced apart to define a liquid supply passageway for delivery of medicament liquid.
Claim 3
Dependent Claim
32 words
A medical probe device of Claim 1 or Claim 2 wherein the second lumen is a fluid supply lumen terminating at a distal port in the distal end of the non-conductive sleeve.
Claim 4
Dependent Claim
41 words
A medical probe device of Claim 1 or Claim 2 wherein the second lumen is a temperature sensor lumen terminating adjacent the distal end of the non-conductive sleeve, at least one temperature sensing device being positioned in the temperature sensor lumen.
Claim 5
Dependent Claim
35 words
A medical probe device of Claim 4 wherein the temperature sensing device is a thermocouple positioned near the distal end of the non-conductive sleeve, the electrical leads of which extend through the temperature sensor lumen.
Claim 6
Dependent Claim
57 words
A medical probe device of Claim 4 including two temperature sensing devices positioned in the temperature sensor lumen, one temperature sensing device being positioned within about 1 mm of the distal end of the non-conductive sleeve, and the second temperature sensing device being positioned at least about 3 mm from the distal end of the non-conductive sleeve.
Claim 7
Dependent Claim
24 words
A medical probe device of Claim 6 wherein the temperature sensing devices are thermocouples, the electrical leads of which extend through the second lumen.
Claim 8
Dependent Claim
101 words
A medical probe device of Claim 1 wherein the non-conductive sleeve includes at least an electrode lumen, a temperature sensor lumen,and a fluid delivery lumen, the electrode lumen terminating at a distal port in the distal end of the non-conductive sleeve, a radiofrequency electrode being positioned in said electrode lumen for longitudinal movement therein through the distal port, the fluid delivery lumen terminating at a distal port in the distal end of the non-conductive sleeve, and the temperature sensor lumen terminating adjacent the distal end of the non-conductive sleeve, at least one temperature sensing device positioned in the temperature sensor lumen.
Claim 9
Dependent Claim
102 words
A multi-luminarstylet for use in a medical probe device comprising a non-conductive sleeve including an electrode lumen, a fluid delivery lumen and a temperature sensor lumen, the electrode lumen terminating at a distal port in the distal end of the non-conductive sleeve, a radiofrequency electrode being positioned in said electrode lumen for longitudinal movement therein through the distal port, the fluid delivery lumen terminating at a distal port in the distal end of the non-conductive sleeve, and the temperature sensor lumen terminating adjacent the distal end of the non-conductive sleeve, at least one temperature sensing device positioned in the temperature sensor lumen.
Claim 10
Dependent Claim
37 words
A multi-luminarstylet of Claim 9 wherein the radiofrequency electrode surface and at least one portion of an opposed surface of the electrode lumen are spaced apart to define a liquid supply passageway for delivery of medicament liquid.
Claim 11
Dependent Claim
33 words
A multi-luminarstylet of Claim 9 wherein the temperature sensing device is a thermocouple positioned near the distal end of the non-conductive sleeve, the electrical leads of which extend through the temperature sensor lumen.
Claim 12
Dependent Claim
54 words
A multi-luminarstylet of Claim 11 including two temperature sensing devices positioned in the second lumen, one temperature sensing device being positioned within about 1 mm of the distal end of the non-conductive sleeve, and the second temperature sensing device being positioned at least about 3 mm from the distal end of the non-conductive sleeve.
Claim 13
Dependent Claim
22 words
A multi-luminarstylet of Claim 12 wherein the temperature sensing devices are thermocouples, the electrical leads of which extend through the second lumen.
Claim 14
Dependent Claim
116 words
A medical probe device comprising a catheter having a control end and a probe end, the probe end including a stylet guide housing having at a stylet port and stylet guide means for directing a flexible stylet outward through the stylet port and through intervening tissue to targeted tissues, a stylet positioned in at least one of said stylet guide means, the stylet comprising an electrical conductor enclosed within a non-conductive sleeve, the electrode having a distal length with at least one current focusing groove thereon and a distal tip shaped to focus current on its terminal end, whereby Rf current passing therefrom into surrounding tissue forms a lesion extending outward from the groove and tip.
Claim 15
Dependent Claim
19 words
A medical probe device of Claim 14 wherein the distal length has a plurality of annular focusing grooves thereon.
Claim 16
Dependent Claim
17 words
A medical probe device of Claim 14 wherein the distal length has a spiral focusing groove thereon.
Claim 17
Dependent Claim
137 words
A medical probe device comprising a catheter having a control end and a probe end, the probe end including a stylet guide housing having at least one stylet port and stylet guide means for directing a flexible stylet outward through each stylet port and through intervening tissue to targeted tissues, a stylet positioned in at least one of said stylet guide means, the stylet comprising a non-conductive sleeve having an electrode lumen, the electrode lumen terminating at a distal port in the distal end of the non-conductive sleeve, a highly flexible radiofrequency electrode being positioned in said electrode lumen for longitudinal movement therein through the distal port, at least a part of the electrode being enclosed within a support tube having sufficient strength to maintain electrode linearity when the electrode is directed outward through the stylet port.
References Cited (Backward Citations)
No citation records indexed.
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