Develop endoscopic instruments — a grasper, monopolar electrosurgical knife, and monopolar electrosurgical scissors — that could be steered and manipulated in the colon with flexibility and precise control by a physician using ergonomically designed hand-operated control handles.
Designing for load variability and friction
- Long, tortuous path in the colon to reach the cecum, a length of about one meter
- Need for precise motion control of end effectors — reliable, consistent, smooth, no whipping during rotation
Ergonomic handle design for controls operated by physician using only their hands
Safely integrating monopolar power delivery into electrosurgical knife and scissors
Sage completed designs for the three articulating instruments:
- DiLumen Endolumenal Interventional Grasper (DiLumen Ig) A sterile, single use, disposable endoscope accessory intended to be used for grasping and manipulating tissue within the digestive tract under direct endoscopic visualization.
- DiLumen Endolumenal Interventional Scissors (DiLumen Is) and DiLumen Endolumenal Interventional Knife (DiLumen Ik) Disposable monopolar electrosurgical devices intended to be used for cutting, dissecting, and cauterizing tissue within the digestive tract during endoscopic procedures.
Lumendi obtained FDA 510(k) clearance for the DiLumen Is in 2018 and the DiLumen Ik in 2019.
- Extensive experience designing complex endoscopic instruments
- Deep understanding of how to apply loads and manipulate tissues over long distances
- Acuity in power integration
- Creative engineering approaches to quickly prototype, identify issues, and redesign iteratively
- Ability to design solutions that meet critical safety requirements despite unique constraints
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