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Modular Retractor for Hip Surgery

Introducing a revolutionary Modular Retractor for hip surgery, providing adjustable blade depth and handle length for precise tissue retraction. This innovative design offers ergonomic handles, interchangeable components, and an adipose accessory for enhanced surgical performance and patient safety.

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Modular Retractor for Hip Surgery

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  1. Modular Retractor for Hip Surgery Group 10:Azni WahidNazihaLazimZulZolkaflyMohamed OsmanHassan Atassi

  2. Advisors Dave Martinez • VP Sales Zimmer • Mechanical Engineer Dr. Michael Christie • Orthopedic Surgeon-Southern Joint Replacement Institute • Holds Design Patents

  3. What is a Retractor? • Surgical instrument by which a surgeon can: • actively separate the edges of a surgical incision or wound • hold back underlying organs and tissues • Allows for: • Smaller incision • Greater working area • Available in many shapes/sizes

  4. Retractors-Hip Surgery • Wide Variety of retractors available for hip surgery • Choice depends surgeons training/ patient • Size of Patient • Point in time in surgery

  5. Materials & Forces • Retractors are made of surgical stainless steel • Average Duration of Hold: 15.5 Minutes • Forces: • Maximum: 48.8N • Average: 9N

  6. Retractor Prices To service 10 hip surgeries per day a minimum of 8 sets needed. Total cost: $38,560

  7. Example: Hibbs Retractor

  8. Issues with current retractor system • Multiple versions of same retractor needed to do the same job because of varying patient size • Increase cost • Increase Storage space • Limited Size Permutations: never exact fit to patient size • Decreased surgeon field of view (too large) • Ineffective & causes injury (too small) • Obese Patients • Adipose tissue wraps around retractor  inefficiencies • Hip retractors being used in knee surgery • Uncomfortable Handle • Average user changes hand positions every 71 seconds • Results in abrupt movement of retractor blade increases chance for injury & length of recovery

  9. Solution: Modular Retractor • Characteristics • Alterable Handle length & Blade Depth • Interchangeable handle types and blades • Ergonomic Handle • Adipose blade accessory

  10. Alterable Handle length & Blade Depth • We propose a mechanism in order to alter the handle length and blade depth to any potential need • Current Standards averages three version of a given retractor of various dimension • Our solution allows for much more • Customizable to exact patient dimension • Optimized surgical view • Ideal length to retract exact amount of tissue • 3 retractors 1 • Less number of tools • Potential Cost decrease

  11. Ergonomic Handle • New handle design to optimize comfort • Potential for multiple handles to be designed in future based on user preferences

  12. Interchangeable Handle types and tips • Various types of tips are used based on need of surgery & surgeon preference • Various tips can be manufactured • Surgical Staff (retractor user) have different perceptions of comfort • Various Handles Can be Manufactured • Example: • 5 tips + 5 handles= 25 retractors • Separating the two components allows for 10 components instead of 25

  13. Adipose Accesory • 31% of Americans are classified as ‘obese’ • Obesity rising by 2% per year • 3-4 fold increase of obese patients requiring Hip replacement • Proposed Solution: • An additional accessory to be added to retractor when operating on obese tissue to handle the increase of adipose tissue

  14. Putting it all together… • Proof of concept designed modeled with: • Interchangeable & adjustable tip • Interchangeable & adjustable handle • Adipose Accessory • Additional tips and handles can be designed in future

  15. Modular Retractor – Hibbs retractor ADIPOSE BLADE Detachable adipose blade HANDLE • Alterable Handle length & Blade Depth BLADE

  16. Alterable handle length & blade depth :The mechanism 1) Unlock Slot/groove 3) 4) BODY Body Blade 2) Lock HANDLE BLADE

  17. Detachable adipose blade: The mechanism

  18. Future Work • Minor tweaks to locking mechanism • Determine Dimensions • Stress-Strain Analyss • Protoype

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