Duodenum Jejunum Cannula Releasing System

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Solution Overview

Problem

Existing diabetes treatment methods, including gastric bypass surgery and implantable gastric diverters, face challenges such as high surgical trauma, costly procedures, and complications like food backflow and line disengagement issues.

Innovation Solution

A jejunum cannula releasing system built in duodenum, comprising an implanting device with a storage tube shell, releaser, membrane tube, and stent, along with a pushing assembly and lines for controlled release and fixation, addresses the challenges by providing a simpler, more convenient, and safer method for diabetes treatment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If gastric bypass surgery is performed for diabetes treatment, then therapeutic effect on T2DM is achieved, but surgical trauma is serious and wound healing is difficult

Engineering Contradiction:

Improvetherapeutic effectVSAvoidsurgical trauma

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical surgical intervention (gastric bypass surgery) with a minimally invasive endoscopic procedure. The jejunum cannula is delivered through the gastrointestinal tract using endoscopic techniques, avoiding external incisions and reducing surgical trauma while achieving the same therapeutic effect of bypassing the stomach to improve diabetes control.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an endoscope as an intermediary tool to deliver the jejunum cannula. The endoscope serves as a mediator that transports the cannula through the gastrointestinal tract without requiring open surgery, thereby reducing direct mechanical trauma to the patient's body while maintaining the therapeutic benefit.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If gastric bypass surgery is performed, then diabetes treatment effect is achieved, but surgery expense is high causing economic burden

Engineering Contradiction:

Improvediabetes treatment effectVSAvoidsurgery expense

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The jejunum cannula is designed as a disposable, single-use device that can be delivered via endoscope. This eliminates the need for expensive surgical facilities, operating rooms, and extended hospital stays associated with gastric bypass surgery, significantly reducing the overall treatment cost while maintaining therapeutic effectiveness.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Device complexity

If ball releasing line is used to fix membrane tube and pushing tube, then structure is simple, but line may enter gap between intestinal tract and membrane tube causing disengagement difficulty

Engineering Contradiction:

Improvestructure simplicityVSAvoidline disengagement reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent extracts the releasing mechanism from the traditional line-based system. Instead of using a ball releasing line that must be manually pulled through the intestinal tract, the invention incorporates a self-contained releasing mechanism within the jejunum cannula assembly that can be actuated remotely or automatically, eliminating the risk of line entanglement and disengagement difficulties.

Inventive Principle:

Principle #2Taking out (Extraction)

4Device complexity

If line-binding structure is used for membrane tube and pushing tube, then structure is simple, but ball releasing line may be mistakenly pulled causing untimely disengagement

Engineering Contradiction:

Improvestructure simplicityVSAvoiddisengagement timing control

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent replaces the manual line-pulling mechanism with a controlled releasing system. The releasing mechanism is integrated into the jejunum cannula and can be actuated through a controlled mechanism (such as a pull-string mechanism with a release knot or an automated system), preventing mistaken pulling and ensuring disengagement occurs only at the appropriate time.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12303466B2Duodenum built-in jejunum cannula releasing system and a use method therefor

Publication Date: 2025.05.20 HANGZHOU TANGJI MEDICAL TECH CO LTD

AI summary

A duodenum built-in jejunum cannula releasing system and a use method therefor, the system including: implanting device, pushing assembly, fixing line and releasing line. The implanting device includes storage pipe shell, releaser, membrane pipe and stent; the storage pipe shell is tubular and provided with near-end opening and far-end opening; the membrane pipe and the stent which are to be released are arranged in the storage pipe shell in folded state; the pushing assembly includes push-pull guiding wire, inner pipe, middle pipe and outer pipe which are sleeved with one another from the inside out in sequence and may move relative to one another.