Vidamed, Inc.

Other

Ep Technologies, Inc.

Retroperfusion Systems, Inc.

Medtronic Vidamed, Inc.

Ingemar H Lundquist

Stuart D Edwards

Hugh R Sharkey

Ronald G Lax

James Allen Baker, Jr

Russell B Thompson

Phillip R Sommer

Bruno Strul

James A Baker, Jr

Arye Rosen

Zoltan Tarczy-Hornoch

Thomas J Kardos

Kee S Lee

Paul Walinsky

Christopher Scott Jones

Michael R Franz

Roger Alan Stern

Jerome D Jackson

Thomas F Kordis

Alan L Kaganov

Kurt O Will

A medical probe device comprises a catheter having a stylet guide housing with one or more stylet ports in a side wall thereof and a stylet guide for directing a flexible stylet outward through the stylet port and through intervening tissue at a preselected, adjustable angle to a target tissue. The total catheter assembly includes a stylet guide lumen communicating with the stylet port and a stylet positioned in said stylet guide lumen for longitudinal movement from the port through intervening tissue to a target tissue. The stylet can be an electrical conductor enclosed within a non-conductive layer, the electrical conductor being a radiofrequency electrode. Preferably, the non-conductive layer is a sleeve which is axially moveable on the electrical conductor to expose a selected portion of the electrical conductor surface in the target tissue. The stylet can also be a microwave antenna. The stylet can also be a hollow tube for delivering treatment fluid to the target tissue. It can also include a fiber optic cable for laser treatment. The catheter can include one or more inflatable balloons located adjacent to the stylet port for anchoring the catheter or dilation. Ultrasound transponders and temperature sensors can be attached to the probe end and/or stylet. The stylet guide can define a stylet path from an axial orientation in the catheter through a curved portion to a lateral orientation at the stylet port.

Medical probe device and method

A medical treatment device comprising an elongate probe member having proximal and distal extremities. The elongate probe member has a longitudinal axis and at least one passageway extending from the proximal extremity to the distal extremity. A guide is mounted in the at least one passage of the elongate probe member and has proximal and distal extremities with the distal extremity of the guide being in the vicinity of the distal extremity of the elongate probe member. The guide has an opening in the distal extremity and a lumen extending from the proximal extremity to the opening in the distal extremity. A needle is slidably disposed in the lumen of the guide. The needle is in the form of a tube having an axial lumen extending therethrough. A control mechanism is coupled to the proximal extremity of the elongate probe member and is secured to the needle for advancing and retracting the needle relative to the guide.

Treatment device with guidable needle

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.

Medical probe with stylets

A medical probe device comprises a catheter having a stylet guide housing with one or more stylet ports in a side wall thereof and a stylet guide for directing a flexible stylet outward through the stylet port and through intervening tissue at a preselected, adjustable angle to a target tissue. The total catheter assembly includes a stylet guide lumen communicating with the stylet port and a stylet positioned in said stylet guide lumen for longitudinal movement from the port through intervening tissue to a target tissue. The stylet can be an electrical conductor enclosed within a non-conductive layer, the electrical conductor being a radiofrequency electrode. Preferably, the non-conductive layer is a sleeve which is axially movable on the electrical conductor to expose a selected portion of the electrical conductor surface in the target tissue. The stylet can also be a microwave antenna. The stylet can also be a hollow tube for delivering treatment fluid to the target tissue. It can also include a fiber optic cable for laser treatment. The catheter can include one or more inflatable balloons located adjacent to the stylet port for anchoring the catheter or dilation. Ultrasound transponders and temperature sensors can be attached to the probe end and/or stylet. The stylet guide can define a stylet path from an axial orientation in the catheter through a curved portion to a lateral orientation at the stylet port.

A medical device for the treatment by radio frequency ablation of a target volume in tissue of a prostate comprising an elongate probe member having proximal and distal extremities and having a passage therein extending from the proximal extremity to the distal extremity. The elongate probe member is sized so that it can be introduced into the urethra. At least one guide tube having proximal and distal extremities is mounted in the passage of the elongate probe member for nonlongitudinal movement therein. The at least one guide tube has a lumen extending therethrough from the proximal extremity to the distal extremity. A radio frequency conductive electrode is disposed in the lumen. A handle is coupled to the proximal extremity of the elongate probe member and includes a finger actuatable mechanism secured to the radio frequency electrode for advancing and retracting the radio frequency electrode with respect to the at least one guide tube. The distal extremity of the at least one guide tube has a curved surface for directing the radio frequency electrode sidewise of the longitudinal axis into the tissue of the prostate.

Radio frequency ablation device for treatment of the prostate

Medical probe device

A medical probe for the treatment by radio frequency ablation of tissue in a human comprising an elongate probe member having proximal and distal extremities. The elongate probe member has a longitudinal axis and at least one passage extending from the proximal extremity to the distal extremity. A guide cannula is mounted in the at least one passage of the elongate probe member and has 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. The guide cannula has an opening in the distal extremity and a lumen extending from the proximal extremity to the opening in the distal extremity. A stylet is slidably disposed in the lumen of the guide cannula and includes a radio frequency electrode having a distal portion and a layer of insulating material disposed around the radio frequency so that at least the distal portion is exposed. A handle is coupled to the proximal extremity of the elongate probe member. The distal extremity of he guide cannula has a bendable distal portion. The handle includes a first actuator for causing the distal portion of the guide cannula to bend at an angle to the longitudinal axis so that the opening faces the tissue and a second actuator secured to the stylet for advancing the radio frequency electrode and the layer of insulating material from the opening in the guide cannula into the tissue.

Steerable medical probe with stylets

A steering mechanism including a steering shaft coupled to a controller which includes a handle and apparatus for manipulating the distal end of the steering shaft. The steering shaft includes a flexible coiled spring having a lead spring fixed in position with respect to a distal end thereof in the distal end of the steering shaft. One or more steering wires is affixed at the distal ends thereof to the lead spring. The steering wires extend through the steering shaft to the controller, and the steering apparatus of the controller is used to place tension on one or both of the steering wires. The attachment of the distal ends of the steering wires to the lead spring may be opposite one another or may be offset for providing greater maneuverability. Tension may be placed on the steering wires by wedges mounted transversely to the controller housing, or by rotation of a shaft mounted transversely to the controller housing, the steering wires being attached to the shaft such that rotation in one direction tenses one steering wire, and rotation in the other direction tenses the other steering wire. Two independently rotatable shafts may be used to separately control the two steering wires.

Catheter steering mechanism

A medical probe device comprising a catheter having a stylet guide housing with at least one stylet port in a side thereof and stylet guide means for directing a flexible stylet outward through at least one stylet port and through intervening tissue to targeted tissues. The stylet guide housing has an optical viewing means positioned for viewing the stylet and adjacent structure which includes a fiber optic channel means for receiving a fiber optic viewing device. The fiber optic channel means can include a guide port means for directing longitudinal movement of a fiber optic device with respect to the stylet guide means in a viewing zone and a flushing liquid channel in the stylet guide housing having an exit port positioned to direct flushing liquid issuing therefrom across the end of a fiber optic device when positioned in the viewing zone. The optical viewing means can comprise a viewing window positioned in the stylet guide housing for viewing the stylet when it is directed outward from its respective stylet port. The optical viewing means can include a fiber optic channel in the stylet guide housing for receiving the a fiber optic viewing device and aligning the viewing end thereof with the viewing window. Windowed devices can include a flushing liquid channel in the stylet guide housing having an exit port positioned to direct flushing liquid issuing therefrom across a surface of the viewing window.

Medical probe device with optic viewing capability

Medical probe (with stylets) device

Growing community of inventors

Pebble Beach, CA, United States of America

Ingemar H Lundquist