Needle-Guided Implant Deployment for Stable Minimally Invasive Repair
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Solution Overview
Problem
Existing implant deployment devices for knee cartilage tears require incisional surgery, which is invasive and may cause additional trauma.
Innovation Solution
An implant deployment device with a body part, needle, pushrod, slider, camrod, and push handle that allows for stable implant deployment without incision, using a push handle and rotary lever to control the deployment of implants through a minimally invasive procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If incisional surgery is performed to deploy implant, then implant deployment is achieved, but surgical trauma and invasiveness increase
Solution Approach 1:
The implant is nested within the needle hollow space and the deployment device body part. The implant can be inserted through the needle without requiring separate incisions, as the needle itself serves as the delivery pathway. This nesting approach eliminates the need for additional incisional surgery while ensuring reliable implant deployment at the target site.
Solution Approach 2:
The needle acts as an intermediary tool that bridges the external deployment device and the internal target site. Instead of requiring direct incisional access, the needle serves as a minimally invasive conduit to deliver and deploy the implant precisely at the tear location, thereby reducing surgical trauma while maintaining deployment reliability.
2Object-affected harmful factors
If minimally invasive procedure is used to deploy implant, then surgical trauma is reduced, but implant deployment stability may be compromised
Solution Approach 1:
The deployment device incorporates dynamic control mechanisms including the pushrod for forward deployment motion and the camrod with rotary lever for controlled release and stabilization. These dynamic elements allow precise control of the implant deployment process through minimally invasive access, ensuring stability is achieved during and after deployment without requiring incisional surgery.
Solution Approach 2:
The device is segmented into functional components: the needle for access, the pushrod for deployment force, the slider for motion control, and the camrod with rotary lever for stabilization. This segmentation allows each component to perform its specific function efficiently, ensuring stable implant deployment through a coordinated minimally invasive procedure.
3Manufacturing precision
If complex deployment mechanism is used to achieve precise implant placement, then placement precision is improved, but device complexity increases
Solution Approach 1:
Multiple functions are merged into integrated components. The needle serves both as the access tool and the protective sheath for the implant. The pushrod combines deployment force application with position control. The camrod and rotary lever are combined to provide both release mechanism and stabilization function. This merging reduces the number of separate components while maintaining precise implant placement capability.
Solution Approach 2:
The deployment device is designed with multi-functional components that perform multiple operations. The needle provides both access and protection functions. The pushrod enables both forward deployment and controlled release. The camrod system serves both as a release mechanism and a stabilization device. This multi-functionality achieves precise implant placement without requiring a complex array of separate specialized tools.
Data Source
AI summary
An implant deployment device comprising, a body part comprising a space formed internally in an elongated shape in one direction, a needle having a hollow shape in which a first end engages with a first end of the body part and a second end is formed with a longitudinal slit of a predetermined length, a pushrod movably accommodated in the internal space of the body part in a forward direction, a slider engaging the push rod and comprising a snagging jaw and a receiving groove; and a camrod pivoting between a first position in which the snagging jaw restricts rearward movement of the slider, and a second position in which the snagging jaw is unjammed and inserted into the receiving groove to permit rearward movement of the slider a predetermined distance.