Rotating Wire Loop Probe for Brain Tumor Resection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current neurosurgical techniques face challenges in accessing deeply seated brain tumors while minimizing brain damage and soft tissue dissection, as they often require large incisions and significant postoperative pain, and existing devices are inadequate for precise cutting, cauterizing, and aspirating through small openings.
Innovation Solution
The development of surgical devices featuring a tubular central stem with suction and cutting openings, a probe sleeve, and a wire loop that can expand and rotate, along with a loop expander and rotation motor mechanism, allowing for precise cutting and aspiration through small openings in the skull and brain tissue, while minimizing tissue manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If large incisions are made to access deeply seated brain tumors, then surgical access is improved, but brain damage and postoperative pain increase
Solution Approach 1:
The surgical device is divided into multiple functional components: a cannula for creating a small opening, a cutting member with multiple blades for precise tissue sectioning, a cauterizing member for sealing vessels, and an aspiration member for removing debris. This segmentation allows each component to perform its specific function through a minimal incision, resolving the contradiction between surgical access and tissue damage.
Solution Approach 2:
The cutting member, cauterizing member, and aspiration member are nested within the cannula in a telescoping configuration. These components can be sequentially deployed and retracted through the same small opening, enabling multiple surgical functions without requiring separate large incisions, thus minimizing brain damage while maintaining operational ease.
2Object-affected harmful factors
If small openings are used to access brain tumors, then brain damage is reduced, but existing devices are inadequate for precise cutting, cauterizing, and aspirating
Solution Approach 1:
The surgical system integrates multiple functions into a single device platform. The cannula serves as both the access pathway and the mounting structure for cutting, cauterizing, and aspiration components. This multi-functionality allows precise tissue manipulation through small openings without requiring separate devices for each function, resolving the contradiction between minimal invasion and operational capability.
Solution Approach 2:
The cutting member includes rotatable blades that can be dynamically deployed and retracted. The aspiration member features adjustable suction ports that can be opened or closed based on surgical needs. This dynamic configuration allows the device to adapt its functionality during the procedure, maintaining precise control through small openings while providing full surgical capability when needed.
3Object-affected harmful factors
If traditional surgical devices are used through small openings, then brain damage is minimized, but cutting precision and tissue manipulation are insufficient
Solution Approach 1:
The cutting member is designed with multiple blades arranged in a circular pattern around the cannula axis, creating a rotating cutting head that precisely sections tissue. This geometric arrangement allows controlled, precise cutting through the small opening without requiring manual manipulation, thereby maintaining cutting precision while minimizing neurological damage.
Solution Approach 2:
The device replaces manual mechanical cutting with a motorized rotating blade system. The rotation is controlled through the cannula, providing consistent, precise cutting action without the variability of manual tool handling. This substitution maintains high cutting precision while reducing the need for extensive tissue manipulation, thereby minimizing neurological damage.
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
These devices enable safe and effective access to deeply seated brain tumors, reducing neurological damage and postoperative pain by allowing for precise cutting, cauterizing, and aspiration through small openings, thereby improving surgical outcomes for brain tumor treatment.
Implementation Method 1
a plurality of suction and cutting openings are formed in the distal portion of the tubular central stem, wherein the tubular central stem is configured to allow cutting of tissue with the plurality of cutting openings, and allow aspiration of the tissue through the plurality of suction openings
Implementation Method 2
at least one wire loop, wherein the at least one wire loop is operably attached to the distal end of the tubular central stem and extends beyond the distal portion of the probe sleeve, and wherein the at least one wire loop is: i) configured for cutting tissue, ii) configured for rotating around the distal portion of the tubular central stem
Implementation Method 3
a loop expander and rotation motor mechanism which is operably linked to the at least one wire loop and configured to cause rotation and outward expansion of the at least one wire loop
Data Source
AI summary
The present invention relates to methods of removing a lesion from a patient. A method of removing a lesion from a patient includes positioning wire loops of a probe device relative to the lesion. The wire loops are simultaneously rotated and expanded to cut material from the lesion. Irrigation fluid is supplied, via the probe device, to irrigate the material cut from the lesion. The supplied irrigation fluid is aspirated, via the probe device, to facilitate removal of the material cut from the lesion.