Deformable Spinal Prosthesis Percutaneous Delivery System
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Solution Overview
Problem
Current prosthetic implantation techniques are invasive, lengthy, and require significant recovery time, necessitating less invasive methods for faster surgical procedures and improved outcomes.
Innovation Solution
A deformable prosthetic device is implanted using a percutaneous instrument with a threaded conveying rod and tube system, allowing for minimally invasive spinal implantation by rotating the rod to advance and retract the prosthesis through the tube, with optional tools for maintaining position and controlling movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional prosthetic implantation techniques are used, then the prosthesis can be implanted, but the surgery is invasive, lengthy, and requires significant recovery time
Solution Approach 1:
The deformable prosthesis is nested within a delivery catheter system, allowing it to be transported through a minimally invasive percutaneous approach to the implantation site. The prosthesis is contained within the catheter lumen during insertion, enabling access to deep spinal structures through small incisions rather than large open surgical wounds.
Solution Approach 2:
The prosthesis transitions from a compressed, deformable state during delivery to an expanded, stable state at the implantation site. This dynamic transformation allows the device to pass through narrow catheter lumens in a compact form and then expand to its functional configuration once deployed, reducing both invasiveness and implantation time.
2Productivity
If traditional prosthetic implantation techniques are used, then the prosthesis can be implanted, but the surgery is lengthy
Solution Approach 1:
The prosthesis is pre-compressed to a reduced profile before insertion, allowing it to be loaded into the catheter system in advance. This preliminary preparation eliminates the need for complex intraoperative compression maneuvers, streamlining the implantation process and reducing surgical duration.
Solution Approach 2:
The delivery system replaces complex mechanical implantation instruments with a streamlined catheter-based approach. The self-expanding mechanism of the prosthesis eliminates the need for complex deployment mechanisms, reducing the number of steps and instruments required during surgery.
3Manufacturing precision
If a deformable prosthesis is used, then precise placement is facilitated, but the device requires a complex delivery system
Solution Approach 1:
The prosthesis undergoes a parameter change in its physical state, transitioning from a compressed, low-profile configuration during delivery to an expanded, high-strength configuration at the implantation site. This parameter transformation enables precise placement through narrow catheters while maintaining structural integrity once deployed.
Solution Approach 2:
The catheter system serves as an intermediary device that temporarily contains and transports the deformable prosthesis to the implantation site. The catheter provides a controlled environment for device delivery and facilitates precise positioning, after which the prosthesis is deployed and the catheter is removed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables faster, less invasive spinal prosthetic implantation, reducing recovery time and improving surgical efficiency by using a deformable prosthesis that conforms to the spinal structure, facilitating precise placement and retrieval.
Implementation Method 1
a threaded conveying rod extending inside the tube... moved through the tube by rotating the rod
Data Source
AI summary
One embodiment is directed to instrumentation for performance of a spinal implantation procedure. In one form, this instrumentation includes: a tube device with an inner surface defining a passage from a proximal end portion to a distal end portion, a conveyor including a threaded conveying rod to be received in the passage of the tube device that can be rotated in the tube or moved in translation along the passage, and a deformable prosthesis structured to move through the passage of the tube by rotating the threaded conveying rod while at least a portion of the deformable prosthesis is positioned between the inner surface and the rod. Optionally, a tool to maintain position of the tube device can be included that has a jaw mechanism, among other things.