TY - JOUR
T1 - In vivo kinematic measurement during laparoscopic cholecystectomy
AU - Rasmus, M.
AU - Riener, R.
AU - Reiter, S.
AU - Schneider, A.
AU - Feussner, H.
PY - 2004/11
Y1 - 2004/11
N2 - Background: Despite the rapid development of computer-assisted surgery, studies on kinematic measurement for surgical innovation are rare. This study describes a system for kinematic measurement in real operating theater environments. Six laparoscopic cholecystectomies were recorded and analyzed. In addition to a demonstration of the feasibility of the method, basis data for the development of an actuated laparoscopic camera holder are evaluated. Methods: The positions of four receivers were recorded by an electromagnetic motion acquisition system. Analysis of the data was performed postoperatively with matlab. Parameters such as coordinates, velocities, angles, angular velocities, workspaces in typical phases of an operation, and subareas of the coordinate ranges were computed. Results: The workspace during the operation in situ before (II) and after (V) removal of the gallbladder at the upper camera end was as follows: (X, Y, Z; given in cm): II: 65.5·42.7·27.3 (subarea 90% = 8.3·14.0·6.3); V: 57.4·33.3·26.2, (90% = 10.3·16.5·7.9). Workspaces at the lower camera end were smaller: II: 14.8·9.7·15.4; (90% = 3.5·3.1·4.3). During these operation phases, velocities up to 82.9 cm/s were documented. Most of the measured velocities were much smaller. The camera -tilt-angles in left/right (αx) and head/ feet (αy) direction were as follows: αx: -69° to +69° and αy: -74° to +48°. Conclusion: This study demonstrates the feasibility of real-time kinematic measurement in the operation environment. The information might be of future value not only as basis data for the development of camera holders, but also for further investigations on robotics, ergonomics, and simulation.
AB - Background: Despite the rapid development of computer-assisted surgery, studies on kinematic measurement for surgical innovation are rare. This study describes a system for kinematic measurement in real operating theater environments. Six laparoscopic cholecystectomies were recorded and analyzed. In addition to a demonstration of the feasibility of the method, basis data for the development of an actuated laparoscopic camera holder are evaluated. Methods: The positions of four receivers were recorded by an electromagnetic motion acquisition system. Analysis of the data was performed postoperatively with matlab. Parameters such as coordinates, velocities, angles, angular velocities, workspaces in typical phases of an operation, and subareas of the coordinate ranges were computed. Results: The workspace during the operation in situ before (II) and after (V) removal of the gallbladder at the upper camera end was as follows: (X, Y, Z; given in cm): II: 65.5·42.7·27.3 (subarea 90% = 8.3·14.0·6.3); V: 57.4·33.3·26.2, (90% = 10.3·16.5·7.9). Workspaces at the lower camera end were smaller: II: 14.8·9.7·15.4; (90% = 3.5·3.1·4.3). During these operation phases, velocities up to 82.9 cm/s were documented. Most of the measured velocities were much smaller. The camera -tilt-angles in left/right (αx) and head/ feet (αy) direction were as follows: αx: -69° to +69° and αy: -74° to +48°. Conclusion: This study demonstrates the feasibility of real-time kinematic measurement in the operation environment. The information might be of future value not only as basis data for the development of camera holders, but also for further investigations on robotics, ergonomics, and simulation.
KW - Computer-assisted surgery
KW - In vivo measurements
KW - Kinematic measurement
KW - Laparoscopic surgery
KW - Motion analysis
KW - Robotics
UR - http://www.scopus.com/inward/record.url?scp=27144470793&partnerID=8YFLogxK
U2 - 10.1007/s00464-003-9196-4
DO - 10.1007/s00464-003-9196-4
M3 - Article
C2 - 15931490
AN - SCOPUS:27144470793
SN - 0930-2794
VL - 18
SP - 1649
EP - 1656
JO - Surgical Endoscopy
JF - Surgical Endoscopy
IS - 11
ER -