Loeffel Mario, Heini Paul F, Bouduban Nicolas, Burger Juergen, Nolte Lutze-Peter, Kowal Jens
MEM Research Center for Orthopedic Surgery, Institute for Surgical Technology and Biomechanics, University of Bern. 3014 Bern, Switzerland.
IEEE Trans Biomed Eng. 2007 Nov;54(11):2051-6. doi: 10.1109/TBME.2007.894964.
A novel computer-assisted injection device for the delivery of highly viscous bone cements in vertebroplasty is presented. It addresses the shortcomings of manual injection systems ranging from low-pressure and poor level of control to device failure. The presented instrument is capable of generating a maximum pressure of 5000 kPa in traditional 6-ml syringes and provides an advanced control interface for precise cement delivery from outside radiation fields emitted by intraoperative imaging systems. The integrated real-time monitoring of injection parameters, such as flow-rate, volume, pressure, and viscosity, simplifies consistent documentation of interventions and establishes a basis for the identification of safe injection protocols on the longer term. Control algorithms prevent device failure due to overloading and provide means to immediately stop cement flow to avoid leakage into adjacent tissues.
