Bipolar Split Tube Tissue Extraction Device
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Solution Overview
Problem
Current medical devices for treating Benign Prostatic Hyperplasia (BPH) are invasive, leading to side effects like retrograde ejaculation, impotence, bleeding, and require hospitalization, with limited minimally invasive options that do not necessitate a transurethral approach or catheter use.
Innovation Solution
A bipolar medical device with a split tube and rotating cutting elements connected to an electrosurgical generator for precise tissue extraction and cauterization, allowing for a transperineal approach that reduces trauma and eliminates the need for a catheter, enabling procedures in office or ambulatory settings without extensive capital equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transurethral resection or microwave thermotherapy is used to treat BPH, then tissue removal or necrosis is achieved, but side effects such as retrograde ejaculation, impotence, and bleeding occur
Solution Approach 1:
The prostate tissue is removed in segmented cores rather than en bloc resection. The device extracts multiple discrete tissue cores through the prostate, achieving complete tissue removal while minimizing trauma to surrounding structures and avoiding the side effects associated with traditional transurethral resection
Solution Approach 2:
The invention replaces thermal energy-based methods (microwave thermotherapy, electrocautery) with a mechanical core extraction system. By using mechanical cutting and extraction without extensive thermal destruction, the device achieves tissue removal while minimizing collateral thermal damage that causes bleeding and tissue necrosis
2Reliability
If traditional surgical treatments are used, then complete tissue removal is achieved, but hospitalization and catheter use are required
Solution Approach 1:
The device approaches the prostate from a transperineal route (through the perineum) rather than the traditional transurethral route (through the urethra). This dimensional change in access pathway allows for complete tissue extraction without requiring catheter placement or hospitalization, as the procedure can be performed through the skin rather than through the urinary tract
3Object-affected harmful factors
If minimally invasive treatments are used, then side effects are reduced, but tissue extraction precision and effectiveness are limited
Solution Approach 1:
The device uses image-guided navigation (ultrasound or MRI) to create a virtual map of the prostate and plans the extraction paths beforehand. This copying of anatomical information allows for precise targeting of tissue cores to be extracted, ensuring complete and accurate tissue removal while maintaining minimally invasive benefits
Solution Approach 2:
The device allows control over extraction parameters such as core size, number of cores, and extraction depth. By adjusting these parameters, the system achieves precise tissue extraction tailored to the specific patient's anatomy and pathology, maintaining both precision and minimal invasiveness
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 device minimizes side effects by reducing tissue trauma and inflammation, allowing for effective tissue extraction and cauterization without a catheter, facilitating procedures in less invasive settings with reduced recovery time and capital expenditures.
Implementation Method 1
The electrosurgical generator is adapted to generate an electric current that flows between the first and second cutting elements for heating tissue located adjacent the first and second cutting elements
Data Source
AI summary
A bipolar medical device for extracting tissue including a handle, and an outer tube projecting from the handle, the outer tube extending along a longitudinal axis and including a proximal end connected with the housing and a distal end spaced from the proximal end. The medical device includes a split tube disposed within the outer tube, the split tube having a distal end including a first cutting element and an opposing second cutting element, a motor coupled with the split tube for selectively rotating the split tube and the first and second cutting elements about the longitudinal axis, and an electrosurgical generator coupled with the split tube, whereby the first cutting element is connectable with a first pole of the electrosurgical generator and the second element is connectable with a second pole of the electrosurgical generator for passing electrical current between the first and second cutting elements.