Intra-vitreal Injection

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Presentation transcript:

Intra-vitreal Injection Client: Barbra Blodi, M.D. Advisor: Paul Thompson Group Members: Mike Swift, Rajit Chakravarty, Mike Hallam, Anthony Nelson

Overview Background Description of product specification Design Alternatives Current idea Future Plans Conclusion

Background • Macular Degeneration Current Treatment Degradation of cone cells Current Treatment Two Clinicians needed Problems

Product Specifications Slow injection rate One handed grip and actuation Work with existing 1 cc syringes Reusability Injection control Stoppable Accuracy

Design Alternatives Hydraulic Spring operated Reusable case

Previous Work Reusable case/ spring model

Previous Work Locking Mechanism

Current Idea

Force & Displacement Diagrams/ Analyses

Equation Analyses Computer program incorporating these equations -- EES

CAD Drawings

Free Space Model of Releasing Mechanism

Future Plans Send designs and dimensions of the locking and reusable case mechanism to the ME shop After completion of prototype, perform flow rate and efficacy tests of the system on cow eye ball Further modifications on design after testing

Conclusions Problem: Modify syringe to allow single clinician to perform injections Proposed Solution: Modified Reusable Case Mechanism Future work: Build workable prototype of new design Begin prototype testing