Abstract:
Die Erfindung betrifft einen elektrochirurgischen Applikator für ein elektrochirurgisches Instrument zur Behandlung von menschlichem oder tierischem Gewebe, ein System sowie ein Verfahren zum Betrieb eines elektrochirurgischen Instruments. Der elektrochirurgische Applikator umfasst einen länglichen Schaft (5), wenigstens eine Einheit zur Abgabe therapeutischer Energie, welchemit einem Ausgang eines Hochfrequenz- Generators verbindbar ist, und wenigstens einen Befeuchtungsmedium-Austritt (30; 32; 34; 82; 87; 130; 132) der ausgebildet ist für den Austritt eines im Applikator geführten Befeuchtungsmediums (40),wobei der Befeuchtungsmedium-Austritt (30; 32; 34; 82; 87; 130; 132) ausgebildet ist, das Befeuchtungsmedium per Kapillarfluss austreten zu lassen.
Abstract:
Systems and methods for determining one or more temperatures within a phototherapy blanket use or include one or more temperature sensors and a set of light sources to determine a temperature of a subject undergoing phototherapy within the phototherapy blanket and estimate a core temperature of the subject based on, at least, the temperature. The phototherapy blanket may include a thicker region having a higher thermal insulation than one or more other regions of the phototherapy blanket. By virtue of measuring the temperature at or near the thicker region, the uncertainty in the relation between a temperature and the subject's core temperature may be reduced, for more accurate temperature determination within the phototherapy blanket.
Abstract:
A cryogenic ablation catheter 12 includes a catheter shaft 16, a balloon 24 and a connector 30 respectively at the catheter shaft proximal and distal ends 18, 20, a refrigerant delivery tube assembly including a refrigerant delivery tube 34 rotatable within the catheter shaft lumen 22, and a refrigerant delivery element 40 with an outlet 42 located inside the balloon which directs refrigerant 44 outwardly against the balloon at different rotary positions as it rotates. A cryogenic balloon ablation system 10 includes the cryogenic ablation catheter, a catheter coupler 119 mating with the connector, a motor 104 including a rotatable hollow motor shaft 102, and a delivery line 100 fluidly coupled to a cryogenic gas source 84 for supplying cryogenic gas to the refrigerant delivery tube. At least one of the refrigerant delivery tube and the delivery line passes at least partway through the hollow motor shaft. The coupling tip 60 of the connector and the refrigerant delivery tube 34 rotate with the motor shaft 102.
Abstract:
Systems and methods for delivering a drug or other therapy over an extended period of time (e.g., several hours, days, weeks, months, years, and so forth) are disclosed herein, as are systems and methods for monitoring various parameters associated with the treatment of a patient. Systems and methods are also disclosed herein that generally involve CED devices with various features for reducing or preventing backflow.
Abstract:
An electrosurgical device is disclosed. The electrosurgical device includes a handle, a shaft extending distally from the handle, and an end effector coupled to a distal end of the shaft. The end effector comprises a first electrode and a second electrode. The second electrode includes a first position and a second position. The second electrode is configured to move from the first position to the second position when a force is applied to the end effector by a tissue section. The first electrode and the second electrode define a treatment area when the second electrode is in the second position.
Abstract:
A device for insertion into a mammalian patient comprises a shaft and a light delivery element. The shaft comprises a proximal end, a distal end, and a lumen therebetween. The light delivery element is constructed and arranged to deliver light to prevent infection, reduce infection and/or cause a therapeutic benefit or physiologic effect.
Abstract:
Devices and methods for tissue ablation include injecting a conductive medium into a target tissue and then delivering an ablative agent to the conductive medium to ablate the target tissue. Ablation catheters also include multiple inline chambers for the containing and heating of an ablative agent. The heating chambers include multiple channels to increase the contact surface area of the ablative agent with the walls of the heating chamber to provide more efficient heating. Induction heating is used to heat a chamber and vaporize a fluid within by wrapping a coil about a ferromagnetic chamber and providing an alternating current to the coil. A magnetic field is created in the area surrounding the chamber which induces electric current flow in the chamber, heating the chamber and vaporizing the fluid inside.
Abstract:
The present disclosure relates to devices, systems and methods providing evaluation and feedback to an operator of a device providing neuromodulation treatment, such as modulation of renal nerves of a human patient. In one embodiment, for example, a system monitors parameters or values generated before, during, and/or after the course of a treatment. Feedback provided to an operator is based on the monitored values and relates to an assessment of various physiological parameters of the patient that are relevant to efficacious neuromodulation. In other embodiments, parameters or values generated during the course of an incomplete treatment (such as due to high temperature or high impedance conditions) may be evaluated to provide additional instructions or feedback to an operator.
Abstract:
A control unit controls delivery of RF energy generated by an RF generator to a medical device configured to perform a medical procedure. The control unit may be separate from the RF generator, and may have an input that may be attached to an output of the RF generator. The control unit includes switching circuitry that is closed while an amount of RF energy is transmitted through the control unit to the medical device. The switching circuitry opens when the amount of RF energy reaches a threshold level.