Medical probe device
First Claim
1. 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.
6 Assignments
0 Petitions
Accused Products
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.
586 Citations
13 Claims
- 1. 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.
-
6. 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.
- View Dependent Claims (7, 8, 9)
- 10. 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.
-
13. 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.
Specification