| 摘要 |
A dental fiberoptic handpiece hose assembly comprises a flexible aspetic outer tubing that contains internally a plurality of conduits and wires for the drive air, exhaust air, coolant water and "chip" air, as well as a fiberoptic bundle and a sensing cable. The outer surface of the tubing is quite smooth and regular without any crevices that would trap bacteria. The outer surface tubing is made from an oil resistant material to discourage cracking and to improve the useful life of the hose assembly. The fiberoptic bundle comprises an acrylic material that is lightweight and flexible. The connection between the handpiece and the hose assembly is a swivelable construction that is quite simple to fabricate. A specially designed adapter is mounted inside the swivel connection and is utilized to connect the conduits of the drive air, exhaust air, chip and and coolant water as well as the fiberoptic bundle and the sensing cable to the handpiece. The fiberoptic bundle connects in an easily releasable manner to the adapter and the sensing cable is also securely attached to the adapter. This construction of the adapter allows access to the interior conduits and the fiberoptic bundle to allow repairability of the hose assembly in the field. In an alternate embodiment, a double swivel is provided to increase the swivelability of the handpiece. A quick disconnect construction is used to allow rapid and simple removal of the handpiece from the hose assembly.
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