Many surgery techniques require that tissue is cut with great care and little bleeding. As ultrasound technology fully meets these demands, it is widely spread in all surgical disciplines.

Surgical interventions at the skull and spinal column are especially challenging. Access via the bony shell of the skull requires a precise and selective approach. The impairment of important neuronal and vascular structures in the brain and at the spinal column due to surgery can also lead to severe functional loss for the patient. For these reasons, the development of minimally invasive and microsurgical operative methods has received a highly positive response, especially in the area of neurosurgery.

Sonoca 300, an ultrasonic dissector by Söring GmbH, is the only unit worldwide offering three working frequencies in one (25 kHz, 35 kHz and 55 kHz), making it suitable for multi-discinpline application.

You can connect ultrasonic handpieces as well as ultrasonic scissors and hooks for cutting and coagulating to the unit.


  • 3 working frequencies in one compact device
  • Controlled tissue dissection (25/35 kHz) preserving nerves, vessels and collagen structures
  • Cutting and coagulation effects (55 kHz) on tissue with special ultrasound instruments
  • Application in ultrasonic lavage
  • The device works simultaneously with integrated aspiration and irrigation functions
  • The Sonoca is processor-controlled and features automatic instrument detection with automatic preselection of the performance parameters

[indications for interventions at the skull]

Tumours are one of the main indications for surgical interventions at the skull. Metastases occur more often than primary brain tumours. This means that more than 20 per cent of cancer patients develop brain metastases during the course of their disease. The most common cerebral metastases occur in the case of lung cancer (30-60 per cent), breast cancer (15-40 per cent) and skin cancer (melanoma, 10 per cent).

Surgical intervention at the skull aims at removing the tumour and metastasis respectively as completely as possible. If this is not possible, surgeons try to reduce the tumour mass as far as possible. The use of neuronavigation as well as intra-operative image data helps determine the exact location of the tumours and thereby reduce the risk of damaging intact tissue and bone structures.

[tumour dissection and fast coagulation with ultrasonic instruments]

Risk is minimised even further with the use of ultrasonic instruments for the fine dissection of brain tumours.

Ultrasonic dissectors can resolve tumour mass effectively ,while preserving the surrounding vessels and nerves in the process. Ultrasound or cold plasma coagulation (CPC) enables the fast spot or surface coagulation of blood vessels.

[advantages of the Söring ultrasonic instruments]

  • Precise and efficient reduction of tumour tissue
  • Prevent damage to the surrounding tissue
  • Applicable to different tissue structures such as hard, medium-hard and soft brain tumours
  • Safe handling
  • Large repertoire for different anatomical locations

[spinal interventions]

One possible spinal intervention is the surgical decompression of the spinal canal associated with spinal stenosis. In the case of a lumbar spinal stenosis, decompression laminectomy is performed to relieve pressure on the spinal cord during which excess or disturbing bone is removed. Other spinal interventions include the removal of sequestered intervertebral disc fragments and the partial removal of vertebral bodies.

In the surgical treatment of traumatic or degenerative spinal diseases, minimally invasive techniques offer a number of advantages. These include:

  • Minimum loss of blood
  • Less postoperative pain
  • Fast mobilisation
  • Fewer wound-healing disorders and secondary complications

[ultrasonic dissection in spinal surgery]

Ultrasonic dissectors in the sensitive area of the spine enable the exceptionally precise removal of bone. The great advantage of ultrasonic dissection lies in selective bone dissection, whereby only hard structures are removed without damage to the surrounding soft tissue. Bone material is removed gently and the dura mater and other nerve structures are not damaged in the process.

[advantages of the Söring ultrasonic dissectors for bone removal]

  • Selective dissection of bone and hard structures and conservation of the surrounding soft tissue
  • The surrounding nerves and vessels are preserved
  • Greatly reduced risk of damaging the dura mater


How to Use

Contact Medigroup Australia for more information.


Sizes and Codes

Contact Medigroup Australia for more information.


This site is intended for healthcare professionals and those working in the healthcare industry, and is for information purposes only.

By entering this site you agree you are:

  1. a healthcare professional; or
  2. a medical reseller