Abstract: A precursor vessel comprises a hafnium halide precursor. The hafnium halide precursor comprises less than 1 ppm of at least one impurity. The at least one impurity comprises at least one of a titanium contaminant, a chromium contaminant, an aluminum contaminant, an iron contaminant, or any combination thereof. Related systems and related methods are also provided, including, for example and without limitation, systems for delivery of vapor precursors, methods for purifying a precursor, and the like.

Abstract: An eye depressor with a light for directing through a sclera. The depressor may removably accommodate a light instrument that might be used to illuminate an area in an eye during an eye surgery. The coupling of the light instrument to the depressor during the procedure may reduce the number of hands required in carrying out the surgery. This may be of particular benefit for eye surgery where limited surgical space is available.

Abstract: The devices and methods of the present invention provide a means to depress the sclera in such a fashion as to provide single point, multiple point, semicircular or 360° circumferential scleral tissue depression without the need for manual manipulation of the scleral depressor. The device comprises a shaped depressor for insertion between the sclera and the orbit of the eye and a holding means for positioning the depressor. In some embodiments the device can be integrated with a speculum. Use of the device eliminates the need to have a second person manipulate the depressor during the procedure and directly enables bimanual surgery.

Abstract: The present invention comprises an implant for placing inside the eye such that the implant comes into contact with the interior tissue of the eye such that it conforms to the inner globe geometry of the eye. Implants of the present invention may also be used to alter the focal length of the eye thereby providing a treatment method for the correction of myopia and hyperopia. The device may consist of several possible configurations, an open mesh structure, a solid metal ring, a solid polymer shape, a mesh polymer shape or combination of these.

Abstract: The devices and methods of the present invention provide a means to depress the sclera in such a fashion as to provide single point, multiple point, semicircular or 360° circumferential scleral tissue depression without the need for manual manipulation of the scleral depressor. The device comprises a shaped depressor for insertion between the sclera and the orbit of the eye and a holding means for positioning the depressor. In some embodiments the device can be integrated with a speculum. Use of the device eliminates the need to have a second person manipulate the depressor during the procedure and directly enables bimanual surgery.

Abstract: An electro-surgical device for performing tissue resection and cauterization includes an elongated body, a pair of arms extending from a distal end of the elongated body, and an electrode in communication with the pair of arms. The elongated body is adapted to be coupled to a source of energy at a proximal end. The electrode has a first region coated with an insulative coating and a second region for focusing energy emission. The coating can be a diamond-like carbon coating or other coating exhibiting resistance to cracking at high temperatures and high voltages. The coating can be deposited on a base section of a loop electrode while the end sections remain free of the coating. Alternatively, the coating can be unevenly deposited on the electrode. In other embodiments, the electrode can comprise a rollerball and the insulative coating can be deposited on selected or random portions of the rollerball.

Abstract: A magnetic device for use with a medical catheter and a guidewire incorporates a magnet adapted to attract a portion of the guidewire and thereby impose a magnetic force tending to inhibit longitudinal motion of the guidewire.

Abstract: A catheter exchange tool for use in vascular dilitation procedures comprising a tool couplable between a balloon catheter and a balloon guidewire. The tool is operated by a physician to exert a longitudinal force on the balloon catheter and, in response to the exertion of the force on the catheter, simultaneously exert an equal and opposite force on the balloon guidewire.