modular retractor for hip replacement surgery
DESCRIPTION
Modular Retractor for Hip Replacement Surgery Department of Biomedical Engineering , Department of Electrical Engineering, Department of Mechanical Engineering, Vanderbilt University Sponsor : Dave Martinez , Dr. Michael Christie. - PowerPoint PPT PresentationTRANSCRIPT
Modular Retractor for Hip Replacement SurgeryDepartment of Biomedical Engineering, Department of Electrical Engineering, Department of Mechanical Engineering, Vanderbilt University
Sponsor: Dave Martinez, Dr. Michael Christie
Hassan Atassi (BME), Azni Nabela Wahid (ME), Mohamed Osman (BME), Noor Naziha Mohd Lazim (BME/EE), Mohammad Zulfadhli Zolkaffly (EE)
Problem Statement
Background
Purpose
Modular Retractor
Device Design
Safety & Costs
Acknowledgement
Design a Modular Retractor to remove inefficiencies in the current retractor instrument in order to decrease the number of instruments needed in in hip replacement surgery as well as to make hip surgery more efficient and safer.
HIP REPLACEMENT SURGERYEvery year approximately 300,000 hip replacement surgeries occur in the United States. This number is expected to grow to 600,000 by 2015.
SURGICAL RETRACTOR• Used to Actively separates the edges of a surgical incision or
wound to create a larger working area for the surgeon and limit incision size.
• Available in variety of sizes and shapes: Choice depends surgeons training/ patient
PROBLEMS• Multiple versions of the same retractor needed to do the same
job because of varying patient size.
• Limited Size Permutations: never exact fit to patient size.• Decreased surgeon field of view (too large)• Ineffective & causes injury (too small)
• Adipose tissue wraps around retractor making it inefficient.
• Handle is uncomfortable to grasp during long surgery.• Average user changes hand position every 71 seconds
Create a proof of concept modular retractor (Hibbs) that incorporates:• Alterable handle length & blade depth• Interchangeable handle types and tips• Ergonomic handle• Adipose tissue accessory
Safety Concerns• Protruding plunger could damage tissue • Small potential for components to unintentionally dislodge
CostLabor: Prototype = $860 (Quick Parts)Plunger= $29.76 (JW Winco)Total Cost: 11,689.76
We would like to thank Dave Martinez, Dr. Michael Christie, Dr. Paul King, Dr. Joel Barnett, & St. Thomas Hospital for their support in the completion of this project.
Plunger Locking Mechanism (JW Winco) Adipose Accessory Attachment Mechanism
Detachable Adipose Accessory TOP: Longest , BOTTOM: Shortest
STANDARD HIBBSModel Handle Length Blade Depth Blade Width
Standard 8” 3” 1.5”
Medium 9.75” 4.5” 1.5”
Extra Large 13” 6.5” 1.5”
MODULAR RETRACTORHandle Length Blade Depth Blade Width
7.68” 4.67” 1.53”
8.49” 5.26”
9.3” 5.85”
10.11” 6.44”
10.92”
11.73”