title: Development of a computer-assisted high-pressure Injection device for vertebroplasty.
abstract: 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.
authors.affiliation: MEM Research Center for Orthopedic Surgery, Institute for Surgical Technology and Biomechanics, University of Bern. 3014 Bern, Switzerland. mario.loeffel@memcenter.unibe.ch
authors.forename: Mario
authors.initials: M
authors.lastname: Loeffel
authors.forename: Paul F
authors.initials: PF
authors.lastname: Heini
authors.forename: Nicolas
authors.initials: N
authors.lastname: Bouduban
authors.forename: Juergen
authors.initials: J
authors.lastname: Burger
authors.forename: Lutze-Peter
authors.initials: LP
authors.lastname: Nolte
authors.forename: Jens
authors.initials: J
authors.lastname: Kowal
mesh_terms: D001843:Bone Cements / Q000627:therapeutic use*; D004360:Drug Therapy, Computer-Assisted / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007270:Injections, Intra-Articular / Q000295:instrumentation* / Q000379:methods; D007278:Injections, Spinal / Q000295:instrumentation*; D011312:Pressure; D013594:Syringes; D054854:Vertebroplasty / Q000295:instrumentation* / Q000379:methods
chemical_list: D001843:Bone Cements