Nested Tube Operative Field Device for Endoscopic Surgery
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Solution Overview
Problem
Existing devices for creating operative space during endoscopic and robotic surgeries, such as insufflation and balloon devices, fail to provide a secure and stable operative field, risking instrument puncture and inadequate visualization.
Innovation Solution
A pair of selectively lockable, slidingly engaged nested tubes with a basket-shaped distal end, which can be expanded to create a secure and variable operative field within the alimentary canal, preventing instrument puncture and enhancing visualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If insufflation (introduction of air) is used to increase operative space, then visualization is improved, but the operative field is not secure and risks instrument puncture
Solution Approach 1:
The patent introduces a mesh barrier as an intermediary element between the insufflated air and the surgical instruments. The mesh acts as a protective mediator that maintains the insufflated operative space while preventing direct contact between instruments and the air-filled space, thereby eliminating puncture risk while preserving visualization benefits
Solution Approach 2:
The patent employs a flexible mesh structure that can conform to the operative site while providing protective containment. This thin film-like mesh maintains the insufflated space boundaries without rigidly constraining instruments, allowing safe passage through the protected operative field
2Volume of moving object
If a balloon device is used to create operative space, then space is increased, but the balloon may be punctured by surgical instruments
Solution Approach 1:
The patent places the mesh structure as an outer protective layer surrounding the balloon device. This nested configuration allows the balloon to maintain its space-creating function while being protected by the outer mesh barrier against instrument puncture
Solution Approach 2:
The mesh acts as an intermediary protective layer between surgical instruments and the balloon. It allows instruments to pass through or work near the balloon-created space without directly contacting the balloon, preventing puncture while maintaining operative accessibility
3Ease of operation
If no protective barrier is used, then instruments can access the operative field freely, but the field is not secure against puncture
Solution Approach 1:
The patent uses a flexible mesh structure that provides protective containment while maintaining instrument accessibility. The mesh's flexible nature allows surgical instruments to pass through or work near the protected field without rigid obstruction, balancing security with ease of operation
Data Source
AI summary
An adjunct non-pneumatic operative field device having a pair of selectively lockable, slidingly engaged nested tubes. The pair of tubes consist of an inner tube and an over tube. Each tube has a proximal end and a distal end. The distal ends could be tapered. In addition, this adjunct non-pneumatic operative field device has a lock. The adjunct non-pneumatic operative field device has two interchangeable configurations: a home position and an active position. In the home position the two distal ends are either coterminous or adjacent to each other. Alternatively, in the active position, the two distal ends are spaced apart by a user. And the active position engages the lock, which suppresses relative movement between the selectively lockable, slidingly engaged nested tubes. The active position also consists of expansion of the over tube to create an operative secure field.