Reamer - Irrigator - Aspirator (RIA)
The reamer-irrigator-aspirator (RIA) is indicated for the treatment of acute fractures in preparation for acceptance of a nail or prosthesis and for harvesting intramedullary reamings for bone grafting. It should not be used in patients with severe osteopenia. The RIA provides irrigation and aspiration during reaming, which allows for single-pass reaming and has been shown to reduce intramedullary pressure. Normal saline irrigation flows through the drive shaft and reamer head into the medullary canal. When coupled with adequate suction, the irrigation mixes with the morselized medullary content which is then evacuated through the aspiration tube. RIA mandates a suction device. The procedure has to be abandoned if suction does not work.
RIA also harvests finely morselized autogenous bone and bone marrow for any surgical procedure which requires bone graft to facilitate fusion and/or fill bone defects.
Experience with RIA show a low morbidity, reduced postoperative pain, and a larger volume of obtained graft material compared to traditional iliac crest method.
Expanding the range of options for intramedullary sizing, the RIA system reamer heads are now available in additional diameters of 11.0, 17.5, 18.0, 18.5, and 19.0?mm. This will offer an overall range from 11.019.0?mm in 0.5?mm increments. They are sterile packaged and intended for single-patient use.
A locking clip to prevent the RIA tube assembly from detaching from the RIA drive shaft during reaming has been added. The locking clip is attached to the RIA system after the drive shaft has been connected to the tube assembly and is designed to clip and remain in place during reaming. The locking clip is sterile packed and intended as a disposable, single-patient use item.
Specially sized irrigation-aspiration tubing has been designed to further facilitate adequate aspiration. A small plastic clip can be used to close off the irrigation until reaming begins.
The tubes come together in one sterile package but can easily be separated from each other so that they can be attached to the two locations in the operating room.
RIA Bone Graft Filter
A bone graft filter is used with a capacity of 100 cc's. An inner mesh with 0.5 mm pore size captures morselized bone and bone marrow. A plunger can be used to compress and expel the captured graft material. The graft filter is a disposable, single use item which comes sterile packed.
Frequently Asked Questions about the RIA System
Annotated RIA Abstracts
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