Motor-Driven Biopsy Drive System Rotating Translating Helical Screw
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Solution Overview
Problem
Manual rotation of helical screw biopsy members is time-consuming, costly, and psychologically distressing for patients due to visible physician movements, and can be slower compared to spring-loaded systems, increasing procedure duration and anxiety.
Innovation Solution
A drive system comprising a housing with threads, a device gear, and a pinion with gear teeth that allows for rotational and translational movement of the biopsy member, powered by a motor to drive the helical screw blade into the target tissue, reducing manual effort and movement visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual rotation of helical screw biopsy member is used, then the biopsy member can be driven into target tissue, but the procedure time increases and patient anxiety increases due to visible physician movements
Solution Approach 1:
The patent replaces the manual mechanical rotation system with an automated motor-driven system. The motor rotates the drive shaft which connects to the helical screw blade, eliminating the need for physician manual rotation. This substitution reduces procedure time while maintaining the ability to drive the biopsy member into target tissue, directly resolving the contradiction between ease of operation and procedure time.
2Ease of operation
If manual rotation of helical screw biopsy member is used, then the biopsy member can be driven into target tissue, but patient psychological comfort decreases due to visible physician hand and wrist movements
Solution Approach 1:
The patent replaces manual mechanical rotation with an automated motor system. The motor is housed within the device housing and drives the biopsy member through a drive shaft and gear mechanism. This eliminates visible physician hand and wrist movements that cause patient anxiety, while still enabling effective driving of the biopsy member into target tissue.
3Productivity
If spring-loaded biopsy systems are used, then procedure time is reduced, but they are faster and more efficient compared to manual helical screw members
Solution Approach 1:
The patent employs a dynamic drive system where the motor can be activated to rotate the drive shaft and advance the biopsy member into target tissue. This dynamic capability allows the system to adapt to different tissue types and depths, providing both speed and efficiency while maintaining controlled operation. The system transitions from static manual rotation to dynamic automated rotation, improving productivity without excessive complexity.
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 drive system enables faster, more precise, and less distressing tissue sampling by simultaneously rotating and translating the biopsy member, reducing procedure time and anxiety for patients while minimizing physician movement.
Implementation Method 1
A device gear within the opening has device gear threads that mate with the housing threads
Implementation Method 2
The device gear threads have gear teeth that mate with pinion teeth that are disposed circumferentially on a pinion
Data Source
AI summary
A drive system is provided for rotating and translating a biopsy member. The drive system includes housing having an opening having housing threads. A device gear within the opening has device gear threads that mate with the housing threads. A biopsy member is fixed to the device gear. The device gear threads have gear teeth that mate with pinion teeth that are disposed circumferentially on a pinion. A drive is configured to rotate the pinion thereby rotating and translating the biopsy member relative to the housing.