US5409453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steerable medical probe with stylets
Assignee: Medtronic Vidamed Inc
•
Filing: 1993-08-19
•
Granted: 1995-04-25
•
Expires: 2013-08-19
Abstract
Abstract A medical probe device for reducing tissue mass in a selected portion of the body comprises a torquable catheter having a control end and a probe end. The probe end includes a stylet guide means with a flexible tip and a tip directing means extending from the control end to the flexible tip for changing the orientation of the central axis of the stylet guide means for directing a flexible stylet outward through the stylet port and through intervening tissue to targeted tissues. A stylet is positioned in the said stylet guide means. The stylet can be an RF electrode, microwave antenna, biopsy means, fluid supply means or combination thereof. Preferably, the stylet is 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. The medical probe device is particularly useful for removing tissue mass from the prostate and can be used for treating BPH or benign or cancerous tumors of the prostate. The device of this invention can be used in combination with a viewing scope such as a cystoscope, endoscope, laproscope and the like, being sized to extend therethrough or it can include a viewing scope. In one construction, the flexible tip comprises a metal tube with parallel spaced-apart slots extending through the tube to a continuous longitudinal section and enclosed within a flexible sleeve, whereby the tip will preferentially bend in a plane through the axis of the tube and the continuous longitudinal section.
Inventors
- 👤 Ingemar H. Lundquist
- 👤 Stuart D. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:26
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/0275; A61B10/06; A61B17/00; A61B17/34; A61B17/3403; A61B17/3417; A61B17/3478; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1477; A61B18/1485; A61B18/18; A61B18/1815; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0133; A61M25/0136; A61M25/0138; A61M25/0147; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/06; A61N1/40; A61N1/403; A61N5/00; A61N5/02; A61N5/04; A61N5/045; A61B10/0241; A61B18/1442; A61B18/148; A61B18/1492; A61B18/20; A61B18/22; A61B18/24; A61B2017/00017; A61B2017/00022; A61B2017/00084; A61B2017/00092; A61B2017/00101; A61B2017/00106; A61B2017/00115; A61B2017/00119; A61B2017/00123; A61B2017/00137; A61B2017/00154; A61B2017/00181; A61B2017/00194; A61B17/00234; A61B2017/00238; A61B2017/00274; A61B2017/00292; A61B2017/003; A61B2017/0046; A61B2017/00469; 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; A61B2017/348; A61B2017/3482; A61B2017/3484; A61B2017/3488; A61B2018/00005; A61B2018/00011; A61B2018/00053; A61B2018/00059; A61B2018/00071; A61B2018/00083; A61B2018/00089; A61B2018/00095; A61B2018/00101; 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; A61B2018/00761; A61B2018/00773; A61B2018/00791; A61B2018/00797; A61B2018/00821; 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; A61B2090/3786; A61B90/39; A61B2090/3925; A61B2217/00; A61B2217/002; A61B2217/005; A61M25/0067; A61M25/0082; A61M25/0084; A61M2025/0085; A61M2025/0086; A61M2025/0087; A61M2025/0089; A61M2025/0096; A61M2025/018; A61M25/0068; A61M25/008; A61M3/00; A61M3/02; A61M3/0279
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
239 words
A medical probe for the treatment by radio frequency ablation of a target volume in tissue of a prostate of a human male having a bladder with a base and a penis with a urethra therein formed by a urethral wall extending into the base of the bladder along a longitudinal axis with the tissue of the prostate surrounding the urethra near the base of the bladder comprising an elongate probe member having proximal and distal extremities and being sized so that it can be introduced into the urethra, said elongate probe member having a passage extending from the proximal extremity to the distal extremities, first and second guide cannulas mounted side by side in the passage of the elongate probe member and having proximal and distal extremities with the distal extremity of the guide cannulas being in the vicinity of the distal extremity of the elongate probe member, each of said guide cannulas having a lumen extending therethrough from the proximal extremity to the distal extremity, a radio frequency conductive electrode disposed in each lumen, an insulating sleeve coaxially disposed on each of said radio frequency electrodes, a control handle secured to the proximal extremity of the elongate probe member and means carried by the control handle and secured to the radio frequency electrode and the insulating sleeve in each lumen whereby the radio frequency electrode and the insulating sleeve in each lumen can be advanced and retracted.
Claim 2
Dependent Claim
239 words
A medical probe for the treatment by radio frequency ablation of a target volume in tissue of a prostate of a human male having a bladder with a base and a penis with a urethra therein formed by a urethral wall extending into the base of the bladder along a longitudinal axis with the tissue of the prostate surrounding the urethra near the base of the bladder comprising an elongate probe member having proximal and distal extremities and being sized so that it can be introduced into the urethra, said elongate probe member having a passage extending from the proximal extremity to the distal extremities, first and second guide cannulas mounted side by side in the passage of the elongate probe member and having proximal and distal extremities with the distal extremity of the guide cannulas being in the vicinity of the distal extremity of the elongate probe member, each of said guide cannulas having a lumen extending therethrough from the proximal extremity to the distal extremity, a radio frequency conductive electrode disposed in each lumen, an insulating sleeve coaxially disposed on each of said radio frequency electrodes, a control handle secured to the proximal extremity of the elongate probe member and means carried by the control handle and secured to the radio frequency electrode and the insulating sleeve in each lumen whereby the radio frequency electrode and the insulating sleeve in each lumen can be advanced and retracted.
Claim 3
Dependent Claim
52 words
A probe as in claim 1 together with means carried by the handle for causing bending of the distal extremity of each of the first and second guide cannulas to thereby control the direction of penetration of the radio frequency electrode through the urethral wall and into the tissue of the prostate.
Claim 4
Dependent Claim
68 words
A probe as in claim 1 wherein the distal extremity of each of the guide cannula is provided with a cylindrical wall, said cylindrical wall having at least a portion thereof containing a plurality of longitudinally spaced apart circumferentially extending slots subtending less than 360 degrees formed therein, said slots facilitating bending of the guide cannula in said flexibe portion of the distal extremity of the guide cannula.
Claim 5
Dependent Claim
32 words
A probe as in claim 3 wherein said slots are circumferentially aligned to provide a backbone extending longitudinally of the flexible portion so as to permit bending in only a single direction.
Claim 6
Dependent Claim
21 words
A probe as in claim 3 wherein said flexible portion can be bent through an angle at least approximating 90 degrees.
Claim 7
Dependent Claim
36 words
A probe as in claim 1 together with means carded by the control handle for pre-adjusting on the control handle the maximum distance the radio frequency electrode in each of the lumens can be extended distally.
Claim 8
Dependent Claim
28 words
A probe as in claim 6 together with means carried by the control handle for pre-adjusting on the control handle the amount of extension of the insulating sleeve.
Claim 9
Dependent Claim
68 words
A probe as in claim 7 wherein said means carried by the handle for adjusting the position of the radio frequency electrode and the position of the insulating sleeve includes means for causing relative movement between the insulating sleeve and the radio frequency electrode in each lumen so that a preselected length of the radio frequency electrode in each lumen can be exposed in tissue of the prostate.
Claim 10
Dependent Claim
32 words
A probe as in claim 1 together with a cystoscope carried by the control handle and having a distal extremity in the vicinity of the distal extremity of the elongate probe member.
Claim 11
Dependent Claim
319 words
A medical probe for the treatment by radio frequency ablation of a target volume in tissue of a prostate of a human male having a bladder with a base and a penis with a urethra therein formed by a urethral wall extending into the base of the bladder along a longitudinal axis with the tissue of the prostate surrounding the urethra near the base of the bladder comprising an elongate probe member having proximal and distal extremities and being sized so that it can be introduced into the urethra, said elongate probe member having a passage extending from the proximal extremity to the distal extremity, a guide cannula mounted in the passage of the elongate probe member and having proximal and distal extremities with the distal extremity of the guide cannula being in the vicinity of the distal extremity of the elongate probe member, said guide cannula having a lumen extending therethrough from the proximal extremity to the distal extremity, a radio frequency conductive electrode disposed in said lumen, an insulating tube coaxially disposed on said radio frequency electrode, a control handle secured to the proximal extremity of the elongate probe member, means carried by the control handle and secured to the radio frequency electrode and the insulating sleeve in the lumen whereby the radio frequency electrode and the insulating sleeve thereon can be advanced and retracted, means for causing bending of the distal extremity of the guide cannula to thereby control the direction of penetration of the radio frequency electrode through the urethral wall and into tissue of the prostate, the distal extremity of the guide cannula being provided with a cylindrical wall, said cylindrical wall having at least a portion thereof containing a plurality of longitudinally spaced apart circumferentially extending slots subtending less than 360 degrees formed therein, said slots facilitating bending of the guide cannula in said portion of the distal extremity of the guide cannula.
Claim 12
Dependent Claim
319 words
A medical probe for the treatment by radio frequency ablation of a target volume in tissue of a prostate of a human male having a bladder with a base and a penis with a urethra therein formed by a urethral wall extending into the base of the bladder along a longitudinal axis with the tissue of the prostate surrounding the urethra near the base of the bladder comprising an elongate probe member having proximal and distal extremities and being sized so that it can be introduced into the urethra, said elongate probe member having a passage extending from the proximal extremity to the distal extremity, a guide cannula mounted in the passage of the elongate probe member and having proximal and distal extremities with the distal extremity of the guide cannula being in the vicinity of the distal extremity of the elongate probe member, said guide cannula having a lumen extending therethrough from the proximal extremity to the distal extremity, a radio frequency conductive electrode disposed in said lumen, an insulating tube coaxially disposed on said radio frequency electrode, a control handle secured to the proximal extremity of the elongate probe member, means carried by the control handle and secured to the radio frequency electrode and the insulating sleeve in the lumen whereby the radio frequency electrode and the insulating sleeve thereon can be advanced and retracted, means for causing bending of the distal extremity of the guide cannula to thereby control the direction of penetration of the radio frequency electrode through the urethral wall and into tissue of the prostate, the distal extremity of the guide cannula being provided with a cylindrical wall, said cylindrical wall having at least a portion thereof containing a plurality of longitudinally spaced apart circumferentially extending slots subtending less than 360 degrees formed therein, said slots facilitating bending of the guide cannula in said portion of the distal extremity of the guide cannula.
Claim 13
Dependent Claim
32 words
A probe as in claim 10 wherein said slots are circumferentially aligned to provide a backbone extending longitudinally of the flexible portion so as to permit bending in only a single direction.
Claim 14
Dependent Claim
247 words
A medical device for the treatment by radio frequency ablation of a target volume in tissue of a prostate of a human male having a bladder with a base and a penis with a urethra therein formed by a urethral wall extending into the base of the bladder along a longitudinal axis with the tissue of the prostate surrounding the urethra near the base of the bladder comprising an elongate probe member having proximal and distal extremities and having a passage therein extending from the proximal extremity to the distal extremity, said elongate probe member being sized so that it can be introduced into the urethra, first and second guide cannulas mounted side by side in the passage of the elongate probe member and having proximal and distal extremities with portions between the proximal and distal extremities, means for fastening together said portions so that they are disposed side by side, each of said guide cannulas having a lumen extending therethrough from the proximal extremity to the distal extremity, a radio frequency conductive electrode disposed in each lumen, an insulating sleeve coaxially disposed on each of said radio frequency electrodes, a handle secured to the proximal extremities of the first and second guide cannulas and means carried by the handle and secured to the radio frequency electrode and the insulating sleeve in each lumen whereby the radio frequency electrode and the insulating sleeve in each lumen can be advanced and retracted with respect to the guide cannula.
Claim 15
Dependent Claim
247 words
A medical device for the treatment by radio frequency ablation of a target volume in tissue of a prostate of a human male having a bladder with a base and a penis with a urethra therein formed by a urethral wall extending into the base of the bladder along a longitudinal axis with the tissue of the prostate surrounding the urethra near the base of the bladder comprising an elongate probe member having proximal and distal extremities and having a passage therein extending from the proximal extremity to the distal extremity, said elongate probe member being sized so that it can be introduced into the urethra, first and second guide cannulas mounted side by side in the passage of the elongate probe member and having proximal and distal extremities with portions between the proximal and distal extremities, means for fastening together said portions so that they are disposed side by side, each of said guide cannulas having a lumen extending therethrough from the proximal extremity to the distal extremity, a radio frequency conductive electrode disposed in each lumen, an insulating sleeve coaxially disposed on each of said radio frequency electrodes, a handle secured to the proximal extremities of the first and second guide cannulas and means carried by the handle and secured to the radio frequency electrode and the insulating sleeve in each lumen whereby the radio frequency electrode and the insulating sleeve in each lumen can be advanced and retracted with respect to the guide cannula.
Claim 16
Dependent Claim
52 words
A device as in claim 12 together with means carried by the handle for causing bending of the distal extremity of each of the first and second guide cannulas to thereby control the direction of penetration of the radio frequency electrode through the urethral wall and into the tissue of the prostate.
Claim 17
Dependent Claim
73 words
A device as in claim 13 wherein the distal extremity of each of the guide cannulas is provided with a cylindrical wall, said cylindrical wall having at least a portion thereof containing a plurality of longitudinally spaced apart circumferentially extending slots subtending less than 360 degrees formed therein to provide a flexible portion, said slots facilitating bending of the guide cannula in said flexible portion of the distal extremity of the guide cannula.
Claim 18
Dependent Claim
32 words
A device as in claim 14 wherein said slots are circumferentially aligned to provide a backbone extending longitudinally of the flexible portion so as to permit bending in only a single direction.
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
US4137920A
Cited
US4312364A
Cited
US4136566A
Cited
US4154246A
Cited
US4228809A
Cited
US4204549A
Cited
US4311154A
Cited
US4402311A
Cited
US4295467A
Cited
US4448198A
Cited
US4267828A
Cited
US4311145A
Cited
US4307720A
Cited
US4375220A
Cited
US4411266A
Cited
US4565200A
Cited
US4805616A
Cited
US4562838A
Cited
US4452236A
Cited
US4397314A
Cited
US4568329A
Cited
US4470407A
Cited
US4494539A
Cited
US4405314A
Cited
US4676258A
Cited
US4774949A
Cited
US4672962A
Cited
US4601296A
Cited
US4798215A
Cited
US4612940A
Cited
US4682596A
Cited
US4552554A
Cited
US4697595A
Cited
US4706681A
Cited
US4800899A
Cited
US4580551A
Cited
US4817601A
Cited
US4594074A
Cited
US4669475A
Cited
US4681122A
Cited
US4785829A
Cited
US4818954A
Cited
US4700716A
Cited
US5057106A
Cited
US4776086A
Cited
US4822333A
Cited
US4813429A
Cited
US4823812A
Cited
US4709698A
Cited
US4949706A
Cited
US4872458A
Cited
US4753223A
Cited
US4893623A
Cited
US4946449A
Cited
US4719914A
Cited
US4765331A
Cited
US4823791A
Cited
US4905667A
Cited
US4943290A
Cited
US4906230A
Cited
US4769005A
Cited
US4784638A
Cited
US4961435A
Cited
US4860744A
Cited
US4911173A
Cited
US4950267A
Cited
US5035695A
Cited
US4919129A
Cited
US4907589A
Cited
US4932958A
Cited
US5030227A
Cited
US5178620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-24 | 1998-10-24 | 1999-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-24 | 2002-10-24 | 2003-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-24 | 2006-10-24 | 2007-04-25 | $7700.00 | Window Closed / Lapsed |