Radial probe endobronchial ultrasound using a guide sheath ...
Ergonomic Ultrasound Probe
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Transcript of Ergonomic Ultrasound Probe
Ergonomic Ultrasound ProbeErgonomic Ultrasound Probe
Yao LuYao LuMeghan OlsonMeghan OlsonEmily PutzerEmily PutzerHeather WaldeckHeather Waldeck
Team Members:Team Members:
University of Wisconsin - MadisonBiomedical Engineering Design Courses
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Advisor:Advisor: Client:Client:
Mark Kliewer, M.D.Mark Kliewer, M.D.Department ofDepartment of
RadiologyRadiologyUW HospitalUW Hospital
ProfessorProfessorNaomi CheslerNaomi Chesler
Department of Department of Biomedical Biomedical EngineeringEngineering
University of University of WisconsinWisconsin
Problem StatementProblem Statement
During ultrasound procedures, sonographers During ultrasound procedures, sonographers must must apply high levels of force while apply high levels of force while performing detailed movementsperforming detailed movements,, the the combination of which increases the number of combination of which increases the number of work-related injuries. Our goal is to work-related injuries. Our goal is to develop develop an ergonomic design to minimize the an ergonomic design to minimize the forces appliedforces applied and improve the current and improve the current ultrasound procedure.ultrasound procedure.
Background InformationBackground Information
Current Ultrasound Current Ultrasound ProceduresProcedures– Console andConsole and TransducerTransducer– ProceduresProcedures
EchocardiogramEchocardiogramBiopsyBiopsy
Background InformationBackground Information
Musculoskeletal Musculoskeletal disordersdisorders– Occur in 80% of sonographersOccur in 80% of sonographers
Carpal TunnelCarpal Tunnel TendonitisTendonitis Shoulder BursitisShoulder Bursitis
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Problem SpecificationsProblem Specifications No interference with the collection of dataNo interference with the collection of data
Reduce force appliedReduce force applied
Reduce strain on jointsReduce strain on joints
Still allow for precise movements and adjustmentsStill allow for precise movements and adjustments
Adaptable Adaptable
Able to maintain a stable positionAble to maintain a stable position
Design Proposal 1: Handle RedesignDesign Proposal 1: Handle Redesign
Decouple the ‘push’ Decouple the ‘push’ and ‘pinch’ and ‘pinch’ – Force applied by palmForce applied by palm– Fingers supply precise Fingers supply precise
movementsmovements
Use splint to support Use splint to support wristwrist
Design Proposal 1: Handle RedesignDesign Proposal 1: Handle Redesign
AdvantagesAdvantages– Allows mobilityAllows mobility– Prevents wrist strain by reducing pinch forcePrevents wrist strain by reducing pinch force– Can be used for many proceduresCan be used for many procedures
DisadvantagesDisadvantages– Does not prevent strain on shoulder and upper armDoes not prevent strain on shoulder and upper arm– Still must apply a large force for a long timeStill must apply a large force for a long time– Sanitation concernSanitation concern– May be uncomfortableMay be uncomfortable
Design Proposal 2: Transducer Design Proposal 2: Transducer RedesignRedesign
Force is applied using Force is applied using entire hand in ‘handle entire hand in ‘handle bar’ grip positionbar’ grip position
Transducer movement Transducer movement separate from main separate from main handle using elastic handle using elastic material material – Allows for small Allows for small
movementsmovements
Design Proposal 2: Transducer Design Proposal 2: Transducer RedesignRedesign
AdvantagesAdvantages– Applies force with more natural position of handApplies force with more natural position of hand
No pinchNo pinch– Can be used for many proceduresCan be used for many procedures
DisadvantagesDisadvantages– May reduce amount of precisionMay reduce amount of precision– Apply a large force for a long timeApply a large force for a long time– Does not prevent strain on shoulder Does not prevent strain on shoulder
Design Proposal 3: Mechanical ArmDesign Proposal 3: Mechanical Arm
Arm is locked into place to Arm is locked into place to apply forceapply force
Arc design Arc design
3 segments attached with 3 segments attached with ball & socket and hinge ball & socket and hinge jointsjoints
Design Proposal 3: Mechanical ArmDesign Proposal 3: Mechanical Arm
AdvantagesAdvantages– Manual force not needed for long durationsManual force not needed for long durations– Allows for many positions without ‘twisting’ armAllows for many positions without ‘twisting’ arm
DisadvantagesDisadvantages– Not applicable to all ultrasound proceduresNot applicable to all ultrasound procedures– Does not allow for fast position adjustmentsDoes not allow for fast position adjustments– Possible stability issue?Possible stability issue?
Additional Client RequirementsAdditional Client Requirements
Prefer eliminating applied force Prefer eliminating applied force
Currently many ideas for handle redesignCurrently many ideas for handle redesign
Focus on echocardiogram and biopsy Focus on echocardiogram and biopsy proceduresprocedures– Transducer held stable for long periodTransducer held stable for long period
Evaluation of DesignsEvaluation of DesignsHandle Handle
redesignredesignTransducer Transducer
redesignredesignMechanical Mechanical
armarmAbility to reduce forceAbility to reduce force 11 11 33Ability to make Ability to make precise movementsprecise movements
22 11 33
ComfortComfort 11 22 33FeasibilityFeasibility 33 11 22Ease of useEase of use 33 22 22Adaptability to Adaptability to different peopledifferent people
11 33 33
Lack of interference Lack of interference with procedureswith procedures
33 22 22
TotalTotal 1414 1212 *18**18*
Final DesignFinal Design
Mechanical arm with adjustmentsMechanical arm with adjustments
– Allow arc to move underneath the bedAllow arc to move underneath the bed
– Size-adjustable arcSize-adjustable arc
– Allow movement back and forthAllow movement back and forth
– Allow storage on the side of bedAllow storage on the side of bed
Future WorkFuture Work
Determine maximum force needed to be Determine maximum force needed to be applied by armapplied by arm
Determine type of materialDetermine type of material
Method to securely lock all arm segments Method to securely lock all arm segments and hingesand hinges
Allow transducer to be removableAllow transducer to be removable
Questions?Questions?