HOW IT WORKS
The Misonix BoneScalpel®
is a novel and unique surgical device in that it offers a gentler osteotomy as compared to standard bone cutting tools. It efficiently slices crystalline bone while leaving elastic soft tissues largely unaffected during incidental contact. This can be particularly important during spinal surgery where bone segments are frequently removed in close vicinity to the spinal cord, nerve roots and major arteries. Ultrasonic cutting of bone is made possible by amplifying an electrical signal and converting it into a high back-and-forth motion of a blunt blade at the extremely high frequency of 22,500 times per second.
HOW IT CUTS
The ultrasonically vibrating blade compresses the bone through repetitive impacts at 22,500 times per second cleaving its way into the bone and creating the cut. Tactile feedback allows the surgeon to sense differences in bone density as he or she is cutting through cortical and cancellous layers. Due to its elasticity, soft tissue is minimally affected during incidental contact with the blade. This is beneficial, for example in spinal decompression surgery when bone is being removed to relieve pressure on a spinal nerve to treat spinal stenosis.
CUTTING SELECTIVELY AND WITH FEEL
BoneScalpel is unique in that it offers a gentler osteotomy as compared to standard bone cutting tools. It efficiently slices crystalline bone while leaving elastic soft tissues largely unaffected during incidental contact.* Imagine being able to cut a tiny window into the calcified shell of a raw egg without puncturing the underlying membrane… For a spine surgeon this translates into being able to dissect the vertebral arch all the way down to the ligamentum, which covers the spinal cord. This is a routine yet delicate procedure used for nerve decompressions or spinal fusions that is normally done by subsequently switching to less aggressive cutting tools.
*Contact to soft tissues should be brief and under moderate pressure
MAKING SPINE SURGERY SAFER
BoneScalpel offers a number of benefits to surgeons, anesthesiologists and patients. Of highest significance is a substantial reduction of blood loss and use of blood products during the most complex spinal procedures involving the fusion of vertebrae over multiple levels. A reduction in blood loss can make it easier for surgeons and anesthesiologists to manage the patient’s shifting fluid balance during long surgeries. Blood transfusions, while generally safe and routine, are still an extra burden to the patient extending the recovery and come at remaining risks for transmitting diseases. In addition, BoneScalpel’s precision and ability to differentiate between rigid bone and elastic nerve structures become very important when relieving spinal nerves from pain causing compressions, as being caused by abnormal bone growth or degeneration of the spinal column after decades of use.