Apparatus for tissue treatment includes a central blunt urethra fixator, which may serve as a return electrode. An array of electrodes is positioned circumferentially about the central blunt urethra fixator and distanced radially from the central blunt urethra fixator. At least one of the electrodes is an active electrode. The central blunt urethra fixator and electrodes protrude from a housing. A main unit includes an RF generator, a controller unit, a power supply and a user interface. The main unit delivers RF energy between the return electrode and a conductive tip of the active electrode to create collagen contraction in a vicinity of the active electrode.

Methods and systems utilizing inferred maximum temperature monitoring for irrigated ablation therapy are described herein. In one embodiment, a method for ablating tissue includes positioning an elongate body proximate to tissue, where the elongate body includes an ablation element and at least one temperature sensor coupled thereto. The method can include simultaneously delivering ablative energy to the tissue through the ablation element and liquid through the elongate body. The method can further include pausing delivery of ablative energy and liquid, as well as sensing a temperature of the ablation element while delivery of ablative energy and liquid is paused. The method can further include any of terminating delivery of ablative energy and liquid and resuming delivery of ablative energy and liquid based on a comparison of the sensed temperature to a reference temperature.

Methods for stabilizing pressure within a cryogenic device include receiving a flow rate value corresponding to an expected average mass flow rate of a cryogen through a needle probe of the cryogenic device during a cryotherapy treatment cycle; determining, based on the flow rate value, a target heater power to be applied to a heater associated with the cryogenic device for a treatment cycle, wherein the heater is configured to heat the cryogen; receiving an input for the treatment cycle; causing the cryogen to flow for a period of time toward the needle probe in response to the input; and apply the target heater power to the heater during the treatment cycle so as to heat the cryogen and stabilize pressure within the cryogenic device.

A probe for performing a cryoablation treatment that includes a handle with a heater configured to heat a fluid and a needle connected to the handle and extending therefrom to a distal end. The needle includes a pathway configured to move the fluid from the handle toward the distal end to heat the needle.

The present application relates to computer-based preoperative planning technology, and discloses a preoperative planning method for multimodal ablation treatment and apparatus thereof, which can automatically provide objective, scientific, and quantitative multimodal ablation planning information. In this method, acquiring parameters of an volume to be ablated; calculating property changes of the tissue caused by performing freezing on the volume according to the parameters of the volume to be ablated, and acquiring a first planning data required for the property changes of the tissue to satisfy a first predetermined condition; further calculating property changes of the tissue caused by performing heating on the volume to acquire a second planning data required for the property changes of the tissue to satisfy a second predetermined condition based on the properties satisfying the first predetermined condition; outputting the first planning data and the second planning data.

A system may comprise a first catheter having a first steerable segment and a second catheter disposed within the first catheter. The second catheter may have a second steerable segment. The system may also comprise an imaging element supported at a distal end of the second catheter, a coil reference sensor supported at a distal portion of the second catheter, and a processor in electrical communication with the coil reference sensor. The processor may be configured to determine a position of a distal portion of the first catheter with reference to the coil reference sensor.

A device for treatment of acne includes: a case having a contact surface portion to contact a skin of an acne region, the contact surface portion being provided with at least one through hole; at least one needle inserted into the skin of the acne region through the through hole with the contact surface portion arranged in contact with the skin; a driving unit arranged inside the case; a needle fixing part arranged inside the case so as to fix the at least one needle and configured to be linearly moved by the driving unit; and a needle cooling unit configured to cooling the at least one needle to transfer coldness into the skin of the acne region through the at least one needle to suppress a function of a sebaceous gland in the skin of the acne region such that proliferation of propionibacterium acnes is limited.

A method and system for automated and semi-automated predictable, consistent, safe, effective, and lumen-specific and patient-specific cryospray treatment of airway tissue in which treatment duration is automatically set by the system following entry of patient information and treatment location information into the system by the user, and treatment spray is automatically stopped by the system when the automatically selected treatment duration has been achieved as determined by the system.

A cryoneedle comprises an outer tube having a distal section with a generally central gas supply line placed within the outer tube. The gas supply line supplies a cryogas for forming an iceball on an outer surface of the outer tube over the distal section. The gas supply line terminates in an expansion chamber placed within the distal section. The cryoneedle comprises a heat exchange helix contacting the inner surface of the outer tube. The heat exchange helix has an increasing surface area per unit distance of the distal section such that the iceball has a generally symmetric shape.

The present disclosure relates to a surgical tool for cutting and hemostasis of biological tissues. The surgical tool includes a hollow blade comprising a cutting implement residing within a hollow cavity configured to provide high-pressure steam through an apical surface. The cutting implement can operate independently or in cooperation with the provided high-pressure steam. The surgical tool of the present disclosure applies a directionally-controlled, high-pressure steam flow to a tissue region of interest. A control unit provides temperature-controlled steam at a flow-rate determined in accordance with tissue type and intended procedure.