Ultrasonic bone dissection with the Misonix BoneScalpel represents a technological breakthrough with unique advantages for spinal surgery. The BoneScalpel allows the surgeon to perform an osteotomy with the efficiency of a sharp chisel, the control of a Kerrison wire cutter, the convenience of a high-speed drill and the thinness of a microsaw, but in the new dimension that ultrasound provides: a highly precise thin cut with reduced bleeding and exceptional tissue selectivity between bone and soft tissue.

The BoneScalpel is unique because it offers a tissue-specific and more precise osteotomy. Its blunted blade makes an effective compression incision in hard bone while remaining atraumatic for soft tissue, which is displaced by the dissipating energy of the blade.

The Misonix BoneScalpel is currently the only ultrasound device that uses blunted blades to frontally plunge into bone, similar to an osteotome. This allows you to perform osteotomies requiring high instrument power with high accuracy and soft tissue safety. The bone can be excised in a single block, including even the dense cortical layer. Ultrasonic blades are widely used for various complex osteotomies to correct various bone deformities in spinal and maxillofacial surgery.

The BoneScalpel shavers allow for layer-by-layer removal of bone, similar to a boron. This allows a gentle removal of bone tissue near delicate structures for decompression, such as in the spinal or radicular canal or near the optic nerve.

Ultrasonic handpieces – shavers perform micromovements in longitudinal direction, which eliminates gyroscopic effect. In contrast to power tools with moving parts, there is no winding or tearing of soft tissues.

Ultrasonic osteotomy significantly reduces bleeding. The BoneScalpel reduces blood loss and therefore the amount of necessary blood transfusions.

ADVANTAGES OF USING ULTRASOUND
The Misonix BoneScalpel is an innovative ultrasound surgical device for fast, safe and precise osteotomies. It is designed specifically to make thin and clean cuts in bone structures with minimal bone loss and preservation of underlying and adjacent soft tissue.

The BoneScalpel receives an electrical signal with a nominal frequency of 22.5 kHz from an ultrasonic generator. Using a piezoelectric transducer, this signal is converted into mechanical vibrations, which in turn are amplified to effective parameters. The blunted BoneScalpel blade makes reciprocating micro-movements in the longitudinal direction, which enables effortless dissection of the hard cortical bone layer.

Ultrasound osteosurgery is tissue-specific, because it makes it possible to precisely cut or remove dense bone tissue without damaging the elastic soft tissue. The loss of bone viability is minimized, and bleeding during surgery is significantly reduced, so that the operating field will remain free of blood. All of this leads to a significant reduction in surgical time.

The BoneScalpel makes the bone cut without damaging the soft tissue, because the bone is more dense, and because of the unique design of the ultrasound instruments.

When the BoneScalpel blade comes into contact with the bone, the bone is not bent, deformed or displaced.

As a result, the bone absorbs a large amount of energy from the blade and is destroyed at the point of contact.

By contrast, soft tissue, due to its elasticity, comes into contact with the BoneScalpel blade and shifts, deforms and vibrates.
As a result, a significant portion of the energy is dissipated and damped in the tissue.

Usually the amount of energy absorbed by the soft tissue at the point of contact with the blade is not enough to cause any damage to the soft tissue. The exception to this is when contact with the blade causes tissue tension and this contact occurs over a long period of time.

INDICATIONS FOR USE AND CLINICAL EXPERIENCE
The BoneScalpel system is indicated for cutting and fragmenting bone tissue as well as for treating wounds (such as burns, trophic and diabetic ulcers, bedsores, etc.) and soft tissue in the operating field where the doctor believes a powerful ultrasound disintegrator is required.