Tissue Removal Device With Boundary Member
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Solution Overview
Problem
Minimally invasive surgical procedures for removing polyps and other suspect tissues face challenges in ensuring complete removal without damaging the base tissue, leading to potential trauma and complications, especially in hard-to-reach anatomical regions.
Innovation Solution
A surgical device with a shaft and jaw assembly that includes a cutting track and fastening track, allowing for secure grasping, cutting, and fastening of tissues, featuring a boundary member that prevents tissue extension and facilitates complete removal and closure, using a combination of mechanical and possibly electrosurgical cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional electrosurgical wire loop or electrical forceps are used to remove polyps, then the polyp can be severed and removed, but there is a risk of inadvertently removing base tissue and creating an opening in the organ
Solution Approach 1:
The device separates the cutting function from the grasping function, with the cutting element positioned to cut only the secured tissue between the jaws. This segmentation ensures that the base tissue beyond the jaw boundary is not inadvertently cut, resolving the contradiction between complete polyp removal and base tissue protection.
Solution Approach 2:
The boundary member acts as an intermediary that defines the operational boundary of the device. It prevents the cutting element from extending beyond the tissue secured between the jaws, thereby mediating between the need for complete excision and the need to protect base tissue from damage.
2Manufacturing precision
If the physician removes the polyp with a wide margin to ensure complete removal, then the suspect tissue can be fully removed, but this increases the risk of creating an opening in the organ wall
Solution Approach 1:
The device applies different functions to different regions: the jaws secure and cut the polyp with margin control, while the boundary member protects the base tissue region from cutting. This local differentiation allows precise margin control without increasing the risk of organ opening.
Solution Approach 2:
The boundary member is positioned in advance to define the cutting boundary before the cutting action occurs. This preliminary positioning ensures that the cut is confined to the intended area and prevents inadvertent cutting of base tissue, resolving the contradiction between margin control and organ integrity.
3Object-affected harmful factors
If minimally invasive procedures are used to remove polyps, then patient trauma is reduced and recovery is faster, but the physician has limited control and visibility in hard-to-reach anatomical regions
Solution Approach 1:
The device combines multiple functions (grasping, cutting, and boundary definition) into a single instrument that can be introduced through minimally invasive access. This multi-functionality maintains the benefits of reduced patient trauma while providing the physician with adequate control through integrated mechanisms.
Solution Approach 2:
The cutting element, jaws, and boundary member are merged into a single integrated device. This combination allows the physician to perform grasping, cutting, and boundary control with one instrument, improving ease of operation in hard-to-reach areas while maintaining minimally invasive benefits.
4Object-affected harmful factors
If the physician is hesitant to remove suspect tissue due to difficulty in maintaining clean margins, then base tissue protection is prioritized, but the suspect tissue may remain and require further surgical intervention
Solution Approach 1:
The boundary member provides visual and physical feedback to the physician about the cutting boundary, allowing real-time monitoring of the excision process. This feedback enables the physician to maintain clean margins with confidence, completing the procedure in one stage without requiring additional interventions.
Solution Approach 2:
The boundary member is positioned in advance to pre-defin the cutting boundary, allowing the physician to plan and execute the excision with precise margin control from the start. This preliminary action eliminates the need for hesitant conservative approaches and reduces the likelihood of requiring further surgery.
Data Source
AI summary
Methods and devices described herein facilitate improved treatment of body organs and relates to surgical instruments, useful in endoscopic, laparoscopic and/or open surgical procedures to effectively remove a suspect region of tissue such as a polyp, abnormal growth, cyst, tumor, lesion, or other abnormality from a base tissue structure.