US5421819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical probe device
Assignee: Medtronic Vidamed Inc
•
Filing: 1993-05-13
•
Granted: 1995-06-06
•
Expires: 2013-05-13
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
- 👤 Hugh R. Sharkey
- 👤 Ingemar H. Lundquist
- 👤 Ronald G. Lax
- 👤 James A. Baker, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:04
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
309 words
A medical probe device for medical treatment of tissue of a prostate through a urethra defined by a urethral wall comprising a guide housing having proximal and distal extremities, means carried by the guide housing providing a first lumen and a second lumen extending therethrough, a stylet slidably mounted in the first lumen and including a flexible radio frequency electrode with a sharpened tip and an insulating sleeve coaxially mounted on the radio frequency electrode and movable relative to the radio frequency electrode, means carried by the distal extremity of the guide housing and in communication with the first lumen for directing the radio frequency and the insulating sleeve sideways of the guide housing, handle means mounted on the proximal extremity of the guide housing for introducing the distal extremity of the guide housing into the urethra so that the distal extremity of the guide housing is in the vicinity of the prostate, means mounted on the proximal extremity of the guide housing for advancing the radio frequency electrode from the first lumen to cause the sharpened tip of the radio frequency electrode to penetrate the urethral wall and to extend into the tissue with the insulating sleeve extending through the urethal wall, means connected to the handle means for causing relative movement between the insulating sleeve and the radio frequency electrode to expose a predetermined length of radio frequency electrode in the tissue of the prostate with the insulating sleeve extending through the urethral wall, means for supplying radio frequency energy to the radio frequency electrode to cause the temperature of the tissue of the prostate adjacent the predetermined length of radio frequency electrode to be raised to cause destruction of cells in the tissue of the prostate and means coupled to the guide housing for supplying a liquid to the second lumen for delivery into the uretha.
Claim 2
Dependent Claim
309 words
A medical probe device for medical treatment of tissue of a prostate through a urethra defined by a urethral wall comprising a guide housing having proximal and distal extremities, means carried by the guide housing providing a first lumen and a second lumen extending therethrough, a stylet slidably mounted in the first lumen and including a flexible radio frequency electrode with a sharpened tip and an insulating sleeve coaxially mounted on the radio frequency electrode and movable relative to the radio frequency electrode, means carried by the distal extremity of the guide housing and in communication with the first lumen for directing the radio frequency and the insulating sleeve sideways of the guide housing, handle means mounted on the proximal extremity of the guide housing for introducing the distal extremity of the guide housing into the urethra so that the distal extremity of the guide housing is in the vicinity of the prostate, means mounted on the proximal extremity of the guide housing for advancing the radio frequency electrode from the first lumen to cause the sharpened tip of the radio frequency electrode to penetrate the urethral wall and to extend into the tissue with the insulating sleeve extending through the urethal wall, means connected to the handle means for causing relative movement between the insulating sleeve and the radio frequency electrode to expose a predetermined length of radio frequency electrode in the tissue of the prostate with the insulating sleeve extending through the urethral wall, means for supplying radio frequency energy to the radio frequency electrode to cause the temperature of the tissue of the prostate adjacent the predetermined length of radio frequency electrode to be raised to cause destruction of cells in the tissue of the prostate and means coupled to the guide housing for supplying a liquid to the second lumen for delivery into the uretha.
Claim 3
Dependent Claim
30 words
A medical probe device as in claim 1, wherein the insulating sleeve has a distal extremity together with a temperature sensor positioned on the distal extremity of the insulating sleeve.
Claim 4
Dependent Claim
15 words
A medical probe device as in claim 2 wherein the temperature sensor is a thermocouple.
Claim 5
Dependent Claim
53 words
A medical probe device as in claim 2, together with an additional temperature sensor positioned on the insulating sleeve and spaced from the first named temperature sensor whereby when the insulating sleeve extends through the urethral wall the first named and additional temperature sensors are located on opposite sides of the urethral wall.
Claim 6
Dependent Claim
37 words
A device as in claim 1 wherein the first lumen is sized so that when the insulating sleeve is disposed therein there remains an annular space together with means for supplying a medicament to the annular space.
Claim 7
Dependent Claim
348 words
A medical probe device for medical treatment of tissue of a prostate through a urethra defined by a urethral wall comprising a guide housing having proximal and distal extremities, a styler carried by the guide housing including an insulating sleeve slidably mounted in the guide housing and having a lumen extending therethrough, a flexible radio frequency conductive electrode with a sharpened tip disposed within the lumen of the insulating sleeve and removable relative to the insulating sleeve, the radio frequency electrode and the insulating sleeve being slidably mounted in the lumen, said lumen having a size so that with the insulating sleeve disposed therein there remains an annular space extending longitudinally of the lumen, means carried by the distal extremity of the guide housing and in communication with the lumen for directing the radio frequency electrode and the insulating sleeve sidewise of the guide housing, handle means mounted on the proximal extremity of the guide housing for introducing the distal extremity of the styler through urethra so that the distal extremity of the guide housing is in the vicinity of the prostate, means mounted on the proximal extremity of the guide housing for advancing the radio frequency electrode from the lumen to cause the sharpened tip of the radio frequency electrode to penetrate the urethral wall and to extend into the tissue of the prostate with the insulating sleeve extending through the urethral wall, means connected to the handle means for causing relative movement between the insulating sleeve and the radio frequency electrode to expose a predetermined length of radio frequency electrode in the tissue of the prostate with the insulating sleeve extending; through the urethral wall, means for supplying radio frequency energy to the radio frequency electrode to cause the temperature of the tissue of the prostate adjacent the predetermined length of radio frequency electrode to be raised to cause destruction of cells in the tissue of the prostate and means coupled to the insulating sleeve for supplying a medicament liquid to the lumen for delivery alongside the electrode into engagement with the tissue of the prostate.
Claim 8
Dependent Claim
348 words
A medical probe device for medical treatment of tissue of a prostate through a urethra defined by a urethral wall comprising a guide housing having proximal and distal extremities, a styler carried by the guide housing including an insulating sleeve slidably mounted in the guide housing and having a lumen extending therethrough, a flexible radio frequency conductive electrode with a sharpened tip disposed within the lumen of the insulating sleeve and removable relative to the insulating sleeve, the radio frequency electrode and the insulating sleeve being slidably mounted in the lumen, said lumen having a size so that with the insulating sleeve disposed therein there remains an annular space extending longitudinally of the lumen, means carried by the distal extremity of the guide housing and in communication with the lumen for directing the radio frequency electrode and the insulating sleeve sidewise of the guide housing, handle means mounted on the proximal extremity of the guide housing for introducing the distal extremity of the styler through urethra so that the distal extremity of the guide housing is in the vicinity of the prostate, means mounted on the proximal extremity of the guide housing for advancing the radio frequency electrode from the lumen to cause the sharpened tip of the radio frequency electrode to penetrate the urethral wall and to extend into the tissue of the prostate with the insulating sleeve extending through the urethral wall, means connected to the handle means for causing relative movement between the insulating sleeve and the radio frequency electrode to expose a predetermined length of radio frequency electrode in the tissue of the prostate with the insulating sleeve extending; through the urethral wall, means for supplying radio frequency energy to the radio frequency electrode to cause the temperature of the tissue of the prostate adjacent the predetermined length of radio frequency electrode to be raised to cause destruction of cells in the tissue of the prostate and means coupled to the insulating sleeve for supplying a medicament liquid to the lumen for delivery alongside the electrode into engagement with the tissue of the prostate.
Claim 9
Dependent Claim
30 words
A medical probe device as in claim 6 wherein the insulating sleeve has a distal extremity together with temperature sensing means positioned on the distal extremity of the insulating sleeve
Claim 10
Dependent Claim
16 words
A medical probe device as in claim 7 wherein the temperature sensing means includes a thermocouple.
Claim 11
Dependent Claim
58 words
A medical probe device as in claim 7 together with an additional temperature sensing means positioned on the insulating sleeve and spaced proximal from the first named temperature sensing means whereby when the insulating sleeve is disposed in the urethral wall the first named and additional temperature sensing means are located on opposite sides of the urethral wall.
Claim 12
Dependent Claim
303 words
A medical probe device for medical treatment of tissue of a prostate through a urethra defined by a urethral wall comprising a guide housing having proximal and distal extremities, a styler slidably mounted in said passageway including a flexible radio frequency electrode with a sharpened tip and an insulating sleeve coaxially mounted on the radio frequency electrode, means carried by the distal extremity of the guide housing and in communication with the passageway for directing the radio frequency electrode and the insulating sleeve sidewise of the guide housing, handle means mounted on the proximal extremity of the guide housing for introducing the distal extremity of the guide housing into the urethra so that the distal extremity of the guide housing is in the vicinity of the prostate, means mounted on the proximal extremity of the guide housing for advancing the radio frequency electrode to cause the sharpened tip of the radio frequency electrode to penetrate the urethral wall and to extend into the tissue of the prostate with the insulating sleeve extending through the urethral wall, means connected to the handle means for causing relative movement between the insulating sleeve and the radio frequency electrode to expose a predetermined length of radio frequency electrode in the tissue of the prostate with the insulating sleeve extending through the urethral wall, means for supplying radio frequency energy to the radio frequency electrode to cause the temperature of the tissue of the prostate adjacent the predetermined length of radio frequency electrode to. be raised to cause destruction of cells in the tissue of the prostate and temperature sensing means earned by the insulating sleeve and disposed in close proximity to the urethral wall for sensing temperatures adjacent the urethral wall when the insulating sleeve extends through the urethral wall to monitor temperatures adjacent the urethral wall.
Claim 13
Dependent Claim
303 words
A medical probe device for medical treatment of tissue of a prostate through a urethra defined by a urethral wall comprising a guide housing having proximal and distal extremities, a styler slidably mounted in said passageway including a flexible radio frequency electrode with a sharpened tip and an insulating sleeve coaxially mounted on the radio frequency electrode, means carried by the distal extremity of the guide housing and in communication with the passageway for directing the radio frequency electrode and the insulating sleeve sidewise of the guide housing, handle means mounted on the proximal extremity of the guide housing for introducing the distal extremity of the guide housing into the urethra so that the distal extremity of the guide housing is in the vicinity of the prostate, means mounted on the proximal extremity of the guide housing for advancing the radio frequency electrode to cause the sharpened tip of the radio frequency electrode to penetrate the urethral wall and to extend into the tissue of the prostate with the insulating sleeve extending through the urethral wall, means connected to the handle means for causing relative movement between the insulating sleeve and the radio frequency electrode to expose a predetermined length of radio frequency electrode in the tissue of the prostate with the insulating sleeve extending through the urethral wall, means for supplying radio frequency energy to the radio frequency electrode to cause the temperature of the tissue of the prostate adjacent the predetermined length of radio frequency electrode to. be raised to cause destruction of cells in the tissue of the prostate and temperature sensing means earned by the insulating sleeve and disposed in close proximity to the urethral wall for sensing temperatures adjacent the urethral wall when the insulating sleeve extends through the urethral wall to monitor temperatures adjacent the urethral wall.
Claim 14
Dependent Claim
32 words
A medical probe device as in claim 10 wherein the insulating sleeve has a distal extremity and wherein the temperature sensing means is positioned on the distal extremity of the insulating sleeve.
Claim 15
Dependent Claim
52 words
A medical probe device as in claim 11 together with an additional temperature sensing means spaced proximal from the first named temperature sensing means whereby when the insulating sleeve is disposed in the urethral wall the first named and additional temperature sensing means are located on opposite sides of the urethral wall.
Claim 16
Dependent Claim
209 words
A medical probe device for medical treatment of tissue at a treatment site through a natural body opening defined by a wall comprising a guide housing having proximal and distal extremities and having a passageway extending from the proximal extremity to the and distal extremity, a styler slidably mounted in said passageway including a flexible conductive electrode with a sharpened tip and an insulating sleeve coaxially mounted on the electrode but exposing the sharpened tip, means carried by the distal extremity of the guide housing and in communication with the passageway for directing the electrode and the insulating sleeve sidewise of the guide housing, handle means mounted on the proximal extremity of the guide housing for introducing the distal extremity of the guide housing into the natural body opening to a position adjacent the treatment site, means mounted on the proximal extremity of the guide housing for advancing the stylet to cause the sharpened tip of the electrode to penetrate the wall and extend into the tissue at the treatment site with the insulating sleeve extending though the wall and means for supplying electrical energy to the electrode to cause a thermal effect in the tissue at the treatment site and temperature sensing means carried by the insulating sleeve.
Claim 17
Dependent Claim
209 words
A medical probe device for medical treatment of tissue at a treatment site through a natural body opening defined by a wall comprising a guide housing having proximal and distal extremities and having a passageway extending from the proximal extremity to the and distal extremity, a styler slidably mounted in said passageway including a flexible conductive electrode with a sharpened tip and an insulating sleeve coaxially mounted on the electrode but exposing the sharpened tip, means carried by the distal extremity of the guide housing and in communication with the passageway for directing the electrode and the insulating sleeve sidewise of the guide housing, handle means mounted on the proximal extremity of the guide housing for introducing the distal extremity of the guide housing into the natural body opening to a position adjacent the treatment site, means mounted on the proximal extremity of the guide housing for advancing the stylet to cause the sharpened tip of the electrode to penetrate the wall and extend into the tissue at the treatment site with the insulating sleeve extending though the wall and means for supplying electrical energy to the electrode to cause a thermal effect in the tissue at the treatment site and temperature sensing means carried by the insulating sleeve.
References Cited (Backward Citations)
US1950788A
Cited
US1879249A
Cited
US1968997A
Cited
US2022065A
Cited
US2047535A
Cited
US2008526A
Cited
US2118631A
Cited
US2710000A
Cited
US3230957A
Cited
US3339542A
Cited
US3556079A
Cited
US3682162A
Cited
US3598108A
Cited
US3595239A
Cited
US3840016A
Cited
US3884237A
Cited
US3835842A
Cited
US3850175A
Cited
US3924628A
Cited
US3828780A
Cited
US3939840A
Cited
US3942530A
Cited
US3991770A
Cited
US4011872A
Cited
US3858577A
Cited
US3948270A
Cited
US4119102A
Cited
USRE32066E
Cited
US4121592A
Cited
US4137920A
Cited
US4312364A
Cited
US4136566A
Cited
US4154246A
Cited
US4228809A
Cited
US4224929A
Cited
DE2848484C2
Cited
US4204549A
Cited
US4237898A
Cited
US4311154A
Cited
US4402311A
Cited
US4295467A
Cited
US4448198A
Cited
US4267828A
Cited
US4311145A
Cited
US4307720A
Cited
US4336809A
Cited
US4375220A
Cited
US4411266A
Cited
US4565200A
Cited
US4805616A
Cited
US4562838A
Cited
US4452236A
Cited
US4397314A
Cited
US4568329A
Cited
US4470407A
Cited
US4494539A
Cited
DE3218314C2
Cited
US4405314A
Cited
US4676258A
Cited
US4774949A
Cited
US4672962A
Cited
US4601296A
Cited
US4798215A
Cited
US4612940A
Cited
US4682596A
Cited
US4781186A
Cited
US4552554A
Cited
US4697595A
Cited
US4706681A
Cited
US4800899A
Cited
US4580551A
Cited
US4817601A
Cited
US4594074A
Cited
US4660560A
Cited
US4658836A
Cited
US4669475A
Cited
US4681122A
Cited
US4785829A
Cited
US4818954A
Cited
US4776086A
Cited
US5057106A
Cited
US4700716A
Cited
US4822333A
Cited
US4823812A
Cited
US4813429A
Cited
US4709698A
Cited
US4949706A
Cited
US4872458A
Cited
US4753223A
Cited
US4940064A
Cited
US4893623A
Cited
US4946449A
Cited
US4719914A
Cited
US4765331A
Cited
US5003991A
Cited
US4823791A
Cited
US4905667A
Cited
US4943290A
Cited
US4906230A
Cited
US4769005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-06-05 | 1998-12-05 | 1999-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-05 | 2002-12-05 | 2003-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-05 | 2006-12-05 | 2007-06-06 | $7700.00 | Window Closed / Lapsed |