Surgical Sheath Adapter With Planet Gear Continuous Rotation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sheath systems for mitral valve repair require manual operations with high technical skill, leading to a long learning curve and exposure to radiative environments, and have limited angular rotation due to a rigid telescopic mechanism, restricting clinical applications.
Innovation Solution
An adapter system with a sun gear and planet gear mechanism allows for continuous rotation of the sheath, enabling precise positioning and expanding the clinical application range by synchronizing the rotation of the handle and knob through a planet carrier and sun gear transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a telescopic mechanism is used in the sheath adapter, then the button can rotate synchronously with the rotating frame, but the handle is restricted to rotate within a limited angular range due to limited telescopic stroke and rigidity
Solution Approach 1:
The patent replaces the rigid telescopic mechanism with a dynamic flexible transmission member (such as a flexible shaft or bellows) that can accommodate large angular rotations while maintaining the transmission connection between the rotating frame and the second transmission shaft. This dynamic structure allows the handle to rotate through a wide angular range without being constrained by telescopic stroke limitations.
Solution Approach 2:
The patent employs a flexible transmission member (flexible shaft or bellows) that acts as a flexible coupling between the rotating frame and the second transmission shaft. This flexible element can bend and rotate through large angles while transmitting torque, thereby enabling the handle to achieve a wide rotation angular range while maintaining synchronous rotation capability.
2Ease of operation
If manual operations are performed by doctors, then the sheath system can be operated, but the learning curve is long and technical skill requirements are high
Solution Approach 1:
The patent replaces complex manual mechanical operations with an automated power-driven system. The power device automatically drives the first and second transmission shafts according to pre-programmed sequences, eliminating the need for doctors to perform complex manual coordination of multiple transmission mechanisms. This substitution significantly reduces the learning curve while maintaining full operational capability.
Solution Approach 2:
The adapter system performs self-service by automatically coordinating the rotation of the rotating frame and the second transmission shaft through the planet gear mechanism. The system self-regulates the transmission relationships without requiring manual intervention, thereby reducing the technical skill requirements for operators while maintaining precise operational control.
3Reliability
If CT equipment is used for surgical guidance, then the surgery can be performed, but medical staff are exposed to harmful radiation for prolonged periods
Solution Approach 1:
The patent replaces the need for continuous CT guidance with an automated power-driven system that pre-programs the transmission sequences. The power device executes predetermined motion patterns to deliver the valve repair device to the mitral valve, reducing reliance on real-time CT imaging and thereby minimizing radiation exposure to medical staff while maintaining surgical guidance accuracy.
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
The adapter system facilitates remote operation, reduces the learning curve for doctors, and enhances safety by minimizing exposure to radiation, while allowing for more versatile surgical procedures.
Implementation Method 1
a second drive assembly provided on the planet carrier and in transmission connection with the sun gear via the planet gear, where when the second drive assembly rotates with the planet carrier, the planet gear moves along a peripheral surface of the sun gear under the drive of the planet carrier
Data Source
AI summary
The present disclosure relates to an adapter and a surgical assistance system. The adapter includes a base, a first drive assembly and a second drive assembly; the base includes a bracket and a sun gear rotatably provided on the bracket, where the bracket is provided with a first input shaft and a second input shaft, and the second input shaft is in transmission connection with the sun gear; the first drive assembly is rotatably provided on the bracket and in transmission connection with the first input shaft, where the first drive assembly includes a planet carrier on which a planet gear is provided; and the second drive assembly is provided on the planet carrier and in transmission connection with the sun gear via the planet gear, where when the second drive assembly rotates with the planet carrier, the planet gear moves along a peripheral surface of the sun gear under the drive of the planet carrier. As the first drive assembly rotates, the second drive assembly can continuously rotate together with the planet gear on the first drive assembly, thereby expanding the clinical application range of the adapter.