Document Detail

Endoclamp balloon visualization and automatic placement system.
MedLine Citation:
PMID:  20719720     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: Aortic occlusion is one of the most important open discussions in minimally invasive cardiac surgery. Different techniques can be employed, and all have benefits and drawbacks. The objective of our work is to improve the safety of internal aortic occlusion with the Port Access technique, which employs an endoclamp balloon catheter. We propose a combined information and positioning system based on augmented reality technology and robotics in which the position of the balloon can be seen at all times and can be automatically controlled by a robotic actuator.
METHODS: The system was designed by a multidisciplinary team of engineers, medical doctors, and human factor specialists in a human-centered design approach. We measure the balloon position in real time with a magnetic tracking system. This position is superimposed on a 3-dimensional scan of the patient's thorax, with the balloon in the artery shown at all times. The position measurement is also used to control the robotic catheter inserter that places and maintains the balloon position at a specified target. The system was evaluated in 2 user studies that compared it with other visual aids.
RESULTS: The user tests have shown that the system effectively supports the surgeon in the placement task, with an increase in placement accuracy and a reduction in time compared with the current visualization technique. The users also rated the system as supporting them well.
CONCLUSIONS: The clinical feasibility of the system was proved. The system provides better visualization and position control and can effectively increase the safety of the procedure. This system has the potential of making Port Access a more attractive technique.
Hugo Furtado; Thomas Stüdeli; Mauro Sette; Terumasa Morita; Primoz Trunk; Adinda Freudenthal; Eigil Samset; Jacob Bergsland; Borut Gersak
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The heart surgery forum     Volume:  13     ISSN:  1522-6662     ISO Abbreviation:  Heart Surg Forum     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-19     Completed Date:  2011-01-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100891112     Medline TA:  Heart Surg Forum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  E205-11     Citation Subset:  IM    
Department of Cardiovascular Surgery, University Medical Centre, Ljubljana, Slovenia.
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MeSH Terms
Aortic Diseases / surgery*
Arterial Occlusive Diseases / surgery*
Balloon Dilation / instrumentation*
Cardiac Surgical Procedures / methods*
Catheters, Indwelling
Computer Systems
Equipment Design
Mitral Valve / surgery
Surgical Procedures, Minimally Invasive / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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