Oil-less Vacuum Pumps features cool operation, inlet filters, discharge silencers, direct drive and vacuum regulators. Its application includes monitoring of gases, chemical analyzers, enviornmental & pollution monitory equipment, air condition & refrigeration and gold refining & jewellery making machines.

Oncology Radiation Systems is branch of radiology that deals with the use of ionizing radiation to treat cancers. The radiation therapy tumors are made up of cells that are reproducing at abnormally high rates. Radiation therapy specifically acts against cells that are reproducing rapidly. Normal cells are programmed to stop reproducing (or dividing) when they come into contact with other cells. In the case of a tumor, this stop mechanism is missing, causing cells to continue to divide over and over. It is the DNA of the cell that makes it capable of reproducing. Radiation therapy uses high energy x-rays to damage the DNA of cells, thereby killing the cancer cells, or at least stopping them from reproducing. Radiation also damages normal cells, but because normal cells are growing more slowly, they are better able to repair this radiation damage than are cancer cells. In order to give normal cells time to heal and to reduce a patient's side effects, radiation treatments are typically given in small daily doses, five days a week, over a six-or seven-week period. It is estimated that more than 50% of cancer patients will receive radiation at some point during their treatment.

Identification. A surgical lamp (including a fixture) is a device intended to be used to provide visible illumination of the surgical field or the patient.

Classification. Class II.

An Ophthalmology Instrument is provided for removing vitreous and fibrous bands from the retina of an eye. The instrument consists of two tubes mounted coaxially within one another, and with an opening adjacent the end of the outer tube. Cutting of the vitreous and fibrous bands is performed by a chopping action set up by the sharp end of the inner tube against the inner surface of the end of the outer tube. The vitreous and fibrous bands which are trapped in the mouth of the instrument are chopped and removed by suction by way of the inner tube. In the instrument to be described, the vitreous is replaced continuously by a saline solution, for example, which is introduced into the instrument by way of a small infusion tube.

Oral dam is a very thin, rectangular, satin-like piece of latex. It is placed over the entire vulva during oral sex to prevent the possible transmission of the HIV virus from the vagina to the mouth or the mouth to the vagina. It can also be used to prevent the spread of genital herpes.

An Orthopedic instrument serves as an adjustable guide for drills, reamers, fasteners, and other orthopedic devices which lie on a target line which extends from the lateral cortex of the femur, through an opening in the proximal end of an inserted intramedullary femoral nail, through the femoral neck, and into the femoral head. The instrument can be secured to and aligned with the inserted nail. A handle of the instrument extends downwardly from the top of the nail along a line which is substantially parallel to the target line. A guide arm is preferably slidably mounted on the handle and extends outwardly from the handle through the target line. At least one opening is formed through the guide arm coaxially with, or parallel to, the target line, for receiving a drill bit, guide tube, fastener, or similar device. When the instrument is used, for example, as a drill guide, the guide arm can be slidably adjusted along the handle to allow optimal positioning of the drill along.

Oscilloscope is a box with a display screen, numerous input connectors, and control knobs and buttons on the front panel. To aid measurement, a grid called the graticule is drawn on the face of the screen. Each square in the graticule is known as a division.Some oscilloscopes have cursors, which are lines that can be moved about the screen to measure the time interval between two points, or the difference between two voltages. Oscilloscopes may have two or more input channels, allowing them to display more than one input signal on the screen. Usually the oscilloscope has a separate set of vertical controls for each channel, but only one triggering system and timebase. In medical field oscilloscope is used to monitor the heart beart pulses and other digital datas periodically.Oscilloscopes are many types, in which cathode ray tube oscilloscope is widely used for many purposes.