Single-Use Hysteroscopic Resection Devices with Integrated Peristaltic Pumps
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Solution Overview
Problem
Existing hysteroscopic and endoscopic procedures face challenges with reusable devices that require complex and costly sterilization, posing infection risks and increasing healthcare costs.
Innovation Solution
Development of single-use devices equipped with a motor-driven cutter and integrated peristaltic pumps for tissue resection and fluid management, featuring a handle with a motor drive, elongated sleeve assembly, and detachable tissue trap, capable of providing controlled fluid inflow and outflow rates, and equipped with a gear mechanism for oscillating rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If reusable devices are used for hysteroscopic procedures, then device durability and cost-effectiveness are improved, but sterilization complexity and infection risks increase
Solution Approach 1:
The patent implements a single-use disposable hysteroscopic resection device that is used once and then discarded, eliminating the need for complex sterilization processes. The device includes all necessary components (cutter, peristaltic pumps, tissue trap) integrated into a disposable unit that can be disposed of after one use, thereby removing infection risks associated with sterilization while maintaining device functionality.
2Reliability
If single-use devices are used, then infection risks and sterilization costs are reduced, but device complexity and initial cost increase
Solution Approach 1:
The patent combines multiple functional components (motor-driven cutter, peristaltic pumps for fluid management, tissue trap) into a single integrated disposable device. This merging of components into one unit simplifies the overall system by eliminating the need for separate sterilization of multiple components and reduces the complexity of assembling and disassembling multiple parts, while maintaining all necessary functions for tissue resection and fluid management.
3Measurement precision
If peristaltic pumps are integrated into the handle, then fluid flow control precision is improved, but device size and manufacturing complexity increase
Solution Approach 1:
The patent replaces complex mechanical fluid control mechanisms with peristaltic pumps that use controlled compression of flexible tubing to regulate fluid flow. This substitution provides precise control over fluid inflow and outflow rates through motorized actuation, enabling accurate flow rate adjustment while integrating the pump system into the device handle in a space-efficient manner.
4Productivity
If motor-driven cutter with oscillating rotation is used, then tissue resection efficiency is improved, but device complexity and power requirements increase
Solution Approach 1:
The patent employs oscillating rotation of the motor-driven cutter, where the cutter rotates back and forth in a periodic motion pattern rather than continuous rotation. This periodic action is achieved through a gear mechanism that converts continuous motor rotation into oscillating motion, enabling efficient tissue resection by repeatedly engaging the cutting edge with the tissue while reducing the complexity of controlling continuous high-speed rotation.
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 solution provides efficient and cost-effective tissue resection and fluid management, reducing infection risks and operational costs while ensuring precise control over fluid flow rates and tissue resection, thus enhancing procedural safety and efficiency.
Implementation Method 1
The first peristaltic pump can be engaged flexible tubing that extends from a fluid source. The second peristaltic pump can engage flexible tubing that extends to a tissue catch.
Implementation Method 2
The motor drive can also be adapted to provide negative pressure in a passageway in the inner sleeve to thereby aspirate fluid and resected tissue through the passageway and into the tissue trap.
Data Source
AI summary
Single-use devices that carry at least one peristaltic pump for providing fluid flows in hysteroscopic or similar procedures. single-use handheld device with a motor-driven cutter and an integrated peristaltic pump used for resecting and removing tissue in an endoscopic procedure.