An ultrasonic transmission circulation system of an ultrasound treatment head and method therefor are provided. In the system and the method therefor according to an embodiment, the supply, discharge, and circulation of the ultrasonic transmission medium with respect to the ultrasound treatment head are all possible by means of a single pump. Further, in the system and the method therefor according to an embodiment, a single system is driven by changing a passage through selective opening and closing of the valves in the system according to the material of a membrane, so that there is no need to drive a separate system for each membrane material.

A catheter assembly is provided having a working lumen and a guide. The guide is configured to position a fragmentizing device within the working lumen. The guide is configured to prevent or minimize any unintended movement of a distal section of the fragmentizing device within the working lumen when the distal section of the fragmentizing device is positioned at a distal end of the working lumen.

A bipolar medical device for extracting tissue including a handle, and an outer tube projecting from the handle, the outer tube extending along a longitudinal axis and including a proximal end connected with the housing and a distal end spaced from the proximal end. The medical device includes a split tube disposed within the outer tube, the split tube having a distal end including a first cutting element and an opposing second cutting element, a motor coupled with the split tube for selectively rotating the split tube and the first and second cutting elements about the longitudinal axis, and an electrosurgical generator coupled with the split tube, whereby the first cutting element is connectable with a first pole of the electrosurgical generator and the second element is connectable with a second pole of the electrosurgical generator for passing electrical current between the first and second cutting elements.

Fluid cooled optical fibers are disclosed. An exemplary fiber comprises a fiber body including a distal end, an inner cap surrounding said distal end, an outer cap surrounding said inner cap, and a tube attached to said outer cap. The tube and outer cap may define a first flow channel, the outer and inner caps may define a second flow channel, and the outer cap may including one or openings for placing the first flow channel in communication with the second flow channel. Associated systems also are disclosed.

A desiccation device for operation on a target tissue includes a handle, a shaft extending distally from the handle, and a head. The shaft defines a lumen therethrough, and the head has a loop configuration supported on a distal end of the shaft. The head is hollow and defines a lumen therethrough. The lumen of the head is in fluid communication with the lumen of the shaft. At least a portion of the head is electrically connected to a source of electrosurgical energy. A fluid is circulatable through the lumens of the shaft and the head.

A vitrectomy apparatus comprises a containment body (3), at least one supply device (4), (5) which can be fixed to an eyeball (6) and/or moved by an operator, feeding means (7) for the controlled feeding of at least one operating fluid, at least partly mounted in the containment body (3) and in turn comprising at least one main pipe (8) which is or can be connected to the supply device (4), (5), and at least one control unit (21) operatively connected at least to the feeding means (7) for controlling their operation. The vitrectomy apparatus (1) also comprises means for varying the temperature (11) of the operating fluid, being coupled with the feeding means (7) and/or with the supply device (4), (5), for varying the temperature of the operating fluid, the control unit (21) also being connected to the means for varying the temperature (11) in order to control their operation. In particular, the means for varying the temperature (11) can act as heating means (12), and comprise one or more Peltier cells (15).

A phototherapy device includes a laser light source 8 for emitting laser light toward a target portion, a body part 5, an intake port 12 provided at a side surface of the body part 5, a discharge port 13 provided at the side surface of the body part 5 at an opposite side from the intake port 12, and an air supply device 14 for supplying air to be ejected from the intake port 12 to the inside of the body part 5, the intake port 12 configured so that an ejection direction F0 of the air is toward the near side from a center of an emission area A of the laser light at the target portion T.

A laser ablation surgery system (10) with safety control of temperature and pressure at a surgical site. The system includes a laser source (20) that produces through a laser fiber a laser beam at a wavelength absorbable by an ablation target. An endoscope (40) has at least one lumen configured to feed an irrigation fluid (4) therethrough to the surgical site. At least one temperature sensor (80) and at least one pressure sensor (140) are disposed at a distal end of the endoscope. The sensors are configured to monitor temperature of the irrigation fluid, and fluid pressure, at the surgical site. A system control (100) includes a patient injury risk calculator (102) configured to perform a preoperative injury risk assessment, and in real time a an intraoperative thermal injury assessment and fluid pressure injury assessment based on the fluid temperature and pressure detected by the sensors at the surgical site.

A method may include providing an ablation system with (i) an ablation catheter having a plurality of antenna/sensor electrodes at a distal end; (ii) a plurality of ablation generators; (iii) a plurality of vector network analyzers (VNAs); (iv) a filtering system; and (v) a transmission system that individually couples each of the plurality of antenna/sensor electrodes to one discrete ablation generator and one discrete VNA. Each VNA may calculate high-frequency electrical parameters (HFEPs) for each antenna/sensor electrode. The method may further include navigating the ablation catheter to a target treatment region within a patient; capturing baseline HFEPs for each antenna/sensor electrode; positioning the ablation catheter; capturing updated HFEPs for each antenna/sensor electrode; identifying a first subset of antenna/sensor electrodes that are in contact with the target tissue and a second subset that is not; and selectively providing ablation signals to the first subset but not to the second subset.

A surgical device is disclosed that comprises a shaft member and a pair of electrodes. The shaft member has a pair of electrode channels that open at the distal end of the shaft member, wherein the electrode channels are positioned adjacent to one another. The pair of electrodes are configured to deliver energy, and one of the pair of electrodes are configured to be disposed in each electrode channel such that distal ends of each of the electrodes are arranged to protrude from the distal end of the shaft member. The shaft member further includes at least one lumen opening at the distal end of the shaft member.