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Effect of laparoscopic grasper force transmission ratio on grasp control

Identifieur interne : 000776 ( PascalFrancis/Corpus ); précédent : 000775; suivant : 000777

Effect of laparoscopic grasper force transmission ratio on grasp control

Auteurs : Eleonora P. Westebring-Van Der Putten ; John J. Van Den Dobbelsteen ; Richard H. M. Goossens ; Jack J. Jakimowicz ; Jenny Dankelman

Source :

RBID : Pascal:09-0238424

Descripteurs français

English descriptors

Abstract

Background Surgeons may cause tissue damage by incorrect laparoscopic pinch force control. Unpredictable tissue and grasper properties may cause slips or ruptures. This study investigated how different forms of haptic feedback influence the surgeon's ability to generate a safe laparoscopic grasp while pulling tissues of variable stiffness using graspers with different force transmission ratios. The results will help define design requirements for training facilities and instruments. Methods For this study, 10 participants lifted an object barehanded, with tweezers, or with one of two laparoscopic graspers until they where able to complete five consecutive safe lifts under different tissue stiffness conditions. The participants were presented with indirect visual feedback of pinch force, object location, and target location. Results Lifting with instruments (tweezers or graspers) required 4.5 to 14.5 times as many practice trials as barehanded lifting, where no slips were recorded. Additionally, slips occurred more often with a decreasing force transmission ratio of the graspers and with increasing tissue stiffness. The maximal pinch force was higher in lifting with instruments than in barehanded lifting (26-60%) irrespective of the stiffness conditions. Using a grasper, the slip margin often was not high enough in the stiffest con- dition, resulting in slippage of up to 84%. Conclusions Without the direct tactile feedback that occurs with normal skin-tissue contact, subjects using graspers have trouble anticipating slippage when lifting tissue with variable stiffness. Performance drops with a decreased force transmision ratio of the instrument and increased tissue stiffness. Furthermore, the pinch forces are not adapted to the variable stiffness conditions. The same pinch force is applied irrespective of tissue stiffness. It takes participants longer to learn a safe laparoscopic grasp than to learn barehanded lifts. Additionally, to perform safe laparoscopic surgery, care should be taken when graspers with a low force transmission ratio are used.

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A02 01      @0 SUREEX
A03   1    @0 Surg. endosc.
A05       @2 23
A06       @2 4
A08 01  1  ENG  @1 Effect of laparoscopic grasper force transmission ratio on grasp control
A11 01  1    @1 WESTEBRING-VAN DER PUTTEN (Eleonora P.)
A11 02  1    @1 VAN DEN DOBBELSTEEN (John J.)
A11 03  1    @1 GOOSSENS (Richard H. M.)
A11 04  1    @1 JAKIMOWICZ (Jack J.)
A11 05  1    @1 DANKELMAN (Jenny)
A14 01      @1 Department of Applied Ergonomics and Design, Faculty of Industrial Design Engineering, Delft University of Technology, Landbergstraat 15 @2 2628 CE Delft @3 NLD @Z 3 aut. @Z 4 aut.
A14 02      @1 Department of Biomedical Engineering, Faculty of Mechanical, Maritime and Materials Sciences, Delft University of Technology @2 Delft @3 NLD @Z 1 aut. @Z 2 aut. @Z 5 aut.
A14 03      @1 Department of Surgery, Catharina-Hospital @2 Eindhoven @3 NLD @Z 4 aut.
A20       @1 818-824
A21       @1 2009
A23 01      @0 ENG
A43 01      @1 INIST @2 21220 @5 354000184953910230
A44       @0 0000 @1 © 2009 INIST-CNRS. All rights reserved.
A45       @0 21 ref.
A47 01  1    @0 09-0238424
A60       @1 P
A61       @0 A
A64 01  1    @0 Surgical endoscopy
A66 01      @0 USA
C01 01    ENG  @0 Background Surgeons may cause tissue damage by incorrect laparoscopic pinch force control. Unpredictable tissue and grasper properties may cause slips or ruptures. This study investigated how different forms of haptic feedback influence the surgeon's ability to generate a safe laparoscopic grasp while pulling tissues of variable stiffness using graspers with different force transmission ratios. The results will help define design requirements for training facilities and instruments. Methods For this study, 10 participants lifted an object barehanded, with tweezers, or with one of two laparoscopic graspers until they where able to complete five consecutive safe lifts under different tissue stiffness conditions. The participants were presented with indirect visual feedback of pinch force, object location, and target location. Results Lifting with instruments (tweezers or graspers) required 4.5 to 14.5 times as many practice trials as barehanded lifting, where no slips were recorded. Additionally, slips occurred more often with a decreasing force transmission ratio of the graspers and with increasing tissue stiffness. The maximal pinch force was higher in lifting with instruments than in barehanded lifting (26-60%) irrespective of the stiffness conditions. Using a grasper, the slip margin often was not high enough in the stiffest con- dition, resulting in slippage of up to 84%. Conclusions Without the direct tactile feedback that occurs with normal skin-tissue contact, subjects using graspers have trouble anticipating slippage when lifting tissue with variable stiffness. Performance drops with a decreased force transmision ratio of the instrument and increased tissue stiffness. Furthermore, the pinch forces are not adapted to the variable stiffness conditions. The same pinch force is applied irrespective of tissue stiffness. It takes participants longer to learn a safe laparoscopic grasp than to learn barehanded lifts. Additionally, to perform safe laparoscopic surgery, care should be taken when graspers with a low force transmission ratio are used.
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C03 06  X  SPA  @0 Cirugía endoscópica @5 30
C03 07  X  FRE  @0 Traitement @5 31
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C07 01  X  SPA  @0 Prevención @5 37
N21       @1 173
N44 01      @1 OTO
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Format Inist (serveur)

NO : PASCAL 09-0238424 INIST
ET : Effect of laparoscopic grasper force transmission ratio on grasp control
AU : WESTEBRING-VAN DER PUTTEN (Eleonora P.); VAN DEN DOBBELSTEEN (John J.); GOOSSENS (Richard H. M.); JAKIMOWICZ (Jack J.); DANKELMAN (Jenny)
AF : Department of Applied Ergonomics and Design, Faculty of Industrial Design Engineering, Delft University of Technology, Landbergstraat 15/2628 CE Delft/Pays-Bas (3 aut., 4 aut.); Department of Biomedical Engineering, Faculty of Mechanical, Maritime and Materials Sciences, Delft University of Technology/Delft/Pays-Bas (1 aut., 2 aut., 5 aut.); Department of Surgery, Catharina-Hospital/Eindhoven/Pays-Bas (4 aut.)
DT : Publication en série; Niveau analytique
SO : Surgical endoscopy; ISSN 0930-2794; Coden SUREEX; Etats-Unis; Da. 2009; Vol. 23; No. 4; Pp. 818-824; Bibl. 21 ref.
LA : Anglais
EA : Background Surgeons may cause tissue damage by incorrect laparoscopic pinch force control. Unpredictable tissue and grasper properties may cause slips or ruptures. This study investigated how different forms of haptic feedback influence the surgeon's ability to generate a safe laparoscopic grasp while pulling tissues of variable stiffness using graspers with different force transmission ratios. The results will help define design requirements for training facilities and instruments. Methods For this study, 10 participants lifted an object barehanded, with tweezers, or with one of two laparoscopic graspers until they where able to complete five consecutive safe lifts under different tissue stiffness conditions. The participants were presented with indirect visual feedback of pinch force, object location, and target location. Results Lifting with instruments (tweezers or graspers) required 4.5 to 14.5 times as many practice trials as barehanded lifting, where no slips were recorded. Additionally, slips occurred more often with a decreasing force transmission ratio of the graspers and with increasing tissue stiffness. The maximal pinch force was higher in lifting with instruments than in barehanded lifting (26-60%) irrespective of the stiffness conditions. Using a grasper, the slip margin often was not high enough in the stiffest con- dition, resulting in slippage of up to 84%. Conclusions Without the direct tactile feedback that occurs with normal skin-tissue contact, subjects using graspers have trouble anticipating slippage when lifting tissue with variable stiffness. Performance drops with a decreased force transmision ratio of the instrument and increased tissue stiffness. Furthermore, the pinch forces are not adapted to the variable stiffness conditions. The same pinch force is applied irrespective of tissue stiffness. It takes participants longer to learn a safe laparoscopic grasp than to learn barehanded lifts. Additionally, to perform safe laparoscopic surgery, care should be taken when graspers with a low force transmission ratio are used.
CC : 002B01; 002B24E06
FD : Endoscopie; Laparoscopie; Transmission; Contrôle; Médecine; Chirurgie endoscopique; Traitement
FG : Prévention
ED : Endoscopy; Laparoscopy; Transmission; Check; Medicine; Endoscopic surgery; Treatment
EG : Prevention
SD : Endoscopía; Laparoscopia; Transmisión; Control; Medicina; Cirugía endoscópica; Tratamiento
LO : INIST-21220.354000184953910230
ID : 09-0238424

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Pascal:09-0238424

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<div type="abstract" xml:lang="en">Background Surgeons may cause tissue damage by incorrect laparoscopic pinch force control. Unpredictable tissue and grasper properties may cause slips or ruptures. This study investigated how different forms of haptic feedback influence the surgeon's ability to generate a safe laparoscopic grasp while pulling tissues of variable stiffness using graspers with different force transmission ratios. The results will help define design requirements for training facilities and instruments. Methods For this study, 10 participants lifted an object barehanded, with tweezers, or with one of two laparoscopic graspers until they where able to complete five consecutive safe lifts under different tissue stiffness conditions. The participants were presented with indirect visual feedback of pinch force, object location, and target location. Results Lifting with instruments (tweezers or graspers) required 4.5 to 14.5 times as many practice trials as barehanded lifting, where no slips were recorded. Additionally, slips occurred more often with a decreasing force transmission ratio of the graspers and with increasing tissue stiffness. The maximal pinch force was higher in lifting with instruments than in barehanded lifting (26-60%) irrespective of the stiffness conditions. Using a grasper, the slip margin often was not high enough in the stiffest con- dition, resulting in slippage of up to 84%. Conclusions Without the direct tactile feedback that occurs with normal skin-tissue contact, subjects using graspers have trouble anticipating slippage when lifting tissue with variable stiffness. Performance drops with a decreased force transmision ratio of the instrument and increased tissue stiffness. Furthermore, the pinch forces are not adapted to the variable stiffness conditions. The same pinch force is applied irrespective of tissue stiffness. It takes participants longer to learn a safe laparoscopic grasp than to learn barehanded lifts. Additionally, to perform safe laparoscopic surgery, care should be taken when graspers with a low force transmission ratio are used.</div>
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<NO>PASCAL 09-0238424 INIST</NO>
<ET>Effect of laparoscopic grasper force transmission ratio on grasp control</ET>
<AU>WESTEBRING-VAN DER PUTTEN (Eleonora P.); VAN DEN DOBBELSTEEN (John J.); GOOSSENS (Richard H. M.); JAKIMOWICZ (Jack J.); DANKELMAN (Jenny)</AU>
<AF>Department of Applied Ergonomics and Design, Faculty of Industrial Design Engineering, Delft University of Technology, Landbergstraat 15/2628 CE Delft/Pays-Bas (3 aut., 4 aut.); Department of Biomedical Engineering, Faculty of Mechanical, Maritime and Materials Sciences, Delft University of Technology/Delft/Pays-Bas (1 aut., 2 aut., 5 aut.); Department of Surgery, Catharina-Hospital/Eindhoven/Pays-Bas (4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Surgical endoscopy; ISSN 0930-2794; Coden SUREEX; Etats-Unis; Da. 2009; Vol. 23; No. 4; Pp. 818-824; Bibl. 21 ref.</SO>
<LA>Anglais</LA>
<EA>Background Surgeons may cause tissue damage by incorrect laparoscopic pinch force control. Unpredictable tissue and grasper properties may cause slips or ruptures. This study investigated how different forms of haptic feedback influence the surgeon's ability to generate a safe laparoscopic grasp while pulling tissues of variable stiffness using graspers with different force transmission ratios. The results will help define design requirements for training facilities and instruments. Methods For this study, 10 participants lifted an object barehanded, with tweezers, or with one of two laparoscopic graspers until they where able to complete five consecutive safe lifts under different tissue stiffness conditions. The participants were presented with indirect visual feedback of pinch force, object location, and target location. Results Lifting with instruments (tweezers or graspers) required 4.5 to 14.5 times as many practice trials as barehanded lifting, where no slips were recorded. Additionally, slips occurred more often with a decreasing force transmission ratio of the graspers and with increasing tissue stiffness. The maximal pinch force was higher in lifting with instruments than in barehanded lifting (26-60%) irrespective of the stiffness conditions. Using a grasper, the slip margin often was not high enough in the stiffest con- dition, resulting in slippage of up to 84%. Conclusions Without the direct tactile feedback that occurs with normal skin-tissue contact, subjects using graspers have trouble anticipating slippage when lifting tissue with variable stiffness. Performance drops with a decreased force transmision ratio of the instrument and increased tissue stiffness. Furthermore, the pinch forces are not adapted to the variable stiffness conditions. The same pinch force is applied irrespective of tissue stiffness. It takes participants longer to learn a safe laparoscopic grasp than to learn barehanded lifts. Additionally, to perform safe laparoscopic surgery, care should be taken when graspers with a low force transmission ratio are used.</EA>
<CC>002B01; 002B24E06</CC>
<FD>Endoscopie; Laparoscopie; Transmission; Contrôle; Médecine; Chirurgie endoscopique; Traitement</FD>
<FG>Prévention</FG>
<ED>Endoscopy; Laparoscopy; Transmission; Check; Medicine; Endoscopic surgery; Treatment</ED>
<EG>Prevention</EG>
<SD>Endoscopía; Laparoscopia; Transmisión; Control; Medicina; Cirugía endoscópica; Tratamiento</SD>
<LO>INIST-21220.354000184953910230</LO>
<ID>09-0238424</ID>
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