Design and Feasibility of PASSIST, a Passive Instrument Positioner

• DOI: 10.1089/lap.2000.10.331
• Publication Date: 2009-01-30T10:22:15Z
• Authors: J.E.N. JASPERS; K.T. DEN BOER; W. SJOERDSMA; M. BRUIJN; C.A. GRIMBERGEN
• Keywords: Invasive surgery; Surgical instrument

During minimally invasive procedures, an assistant controls the camera and often a laparoscopic grasper. Ideally, surgeon should be able to manipulate instruments because indirect way of control complicates surgeon's observation actions disturbs eye-hand coordination. Reported replacements for are active positioners, "robots," such as Aesop EndoAssist. Because positioning is static task, Academic Medical Center has developed passive instrument (PASSIST) allow solo surgery.The PASSIST was designed simple, fully autoclavable, slender, stiff. The joints have adjustable friction spring compensation stabilizing in fixed position, enabling intuitive single-hand repositioning.The been tested three procedures: cholecystectomy, laparoscopically assisted vaginal hysterectomy, spondylodesis. In all these could replaced satisfactorily, on his own.Solo surgery using feasible. positioner enables viewpoint, stable image, therefore improve manipulating actions.