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BEGIN:VEVENT
DTSTAMP:20241014T203103Z
LOCATION:FLW Salon B
DTSTART;TZID=America/Phoenix:20240913T101500
DTEND;TZID=America/Phoenix:20240913T102500
UID:HFESAM_ASPIRE - Presented by HFES_sess279_LBR120@linklings.com
SUMMARY:Use Forces by Interventional Cardiologists: Filling Gaps in Force 
 Data for Catheter-Based Cardiovascular Device Design
DESCRIPTION:Late Breaking Results\n\nGrainne Tyrrell (Health Research Inst
 itute, University of Limerick; Medtronic); Eoin White and Leonard O'Sulliv
 an (University of Limerick); and Donna Curley (Medtronic)\n\nIntroduction\
 nCatheter-based cardiovascular devices have unique user interfaces and req
 uire users to execute complex hand actions. There are insufficient data in
  the literature on user grip-types, strengths, and application to the desi
 gn of these medical devices. This research aimed to gather data on maximum
  strength from cardiologists which can be applied to the design of devices
 .\nMethods\nNine cardiologists performed three grip-types for each conditi
 on with their right hand: power, tripod, and tip pinch. These were priorit
 ised by research on grip-types performed intraoperatively.  A test rig was
  developed to mount different sized handles (6, 20, 40 and 60mm diameter) 
 at multiple angles between horizontal to the benchtop to 45°. Maximal user
  grip forces applied by each finger were measured using sensorised gloves.
  Corresponding distal (output) forces were gathered using an in-line load 
 cell.  \nResults\nThe middle finger contributed  the most for power grip a
 cross all conditions (mean = 16.8% ), followed by the ring finger (mean = 
 13.8%). There was no significant variation in force contribution for tripo
 d pinch, with thumb, index, and ring contributing 23.2%, 22.2% and 21.5% r
 espectively. The thumb contributed on average 41.1% of the output force fo
 r tip pinch, with the difference in contribution between the thumb and ind
 ex increasing for 20mm handles.\nA 45° angle was the optimal for 20mm and 
 40mm handles across all grip-types, when optimal efficiency is considered 
 as the least input force resulting in the highest output force. \nThese da
 ta address gaps for the design of devices that optimise user experience.\n
 \nSession Chairs: Krystyna Gielo-Perczak (University of Connecticut) and V
 ickie Nguyen (UX Consultant)
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